"uuid","repository link","title","author","contributor","publication year","abstract","subject topic","language","publication type","publisher","isbn","issn","patent","patent status","bibliographic note","access restriction","embargo date","faculty","department","research group","programme","project","coordinates"
"uuid:54c1b176-cafc-4678-a4ec-699418b278d0","http://resolver.tudelft.nl/uuid:54c1b176-cafc-4678-a4ec-699418b278d0","Agent-Based Modelling of EU Energy and Climate Policy: Investment, Uncertainty and Policy Imperfections","Chappin, E.J.L. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie)","","2020","We simulate climate and energy policy for the EU using a flexible and modular agent-based modelling approach, we named Energy Modelling Laboratory (EMLab). The agent-based model focuses on investment in power generation and studies long run effects of various interacting European energy policies, and incorporates differences between countries. On the basis of investment theory, and with the inclusion of key uncertainties, this allows us to step away from lowest cost investment paths and study more realistic investment conditions. We see this as an important complementary approach to studying scenarios for the energy transition in Europe by simulating the effects of EU’s energy policy reality. We have developed modules with rich analyses of carbon and renewables policies, capacity mechanisms, investment behaviour and representation of intermittent renewables. On the basis of recent work, we present an overview of modelling results, and we show their relevance in the EU context.","Agent-based modelling; Energy transition; Energy and climate policy; Energy modelling laboratory; Investment","en","abstract","","","","","","https://www.youtube.com/watch?v=HWXevxb5DK8","","","","","Energie and Industrie","","",""
"uuid:fc0857b8-879e-4478-b10b-edff8205df14","http://resolver.tudelft.nl/uuid:fc0857b8-879e-4478-b10b-edff8205df14","Sleutelen aan de Bijlmer: Interpretaties","Ter Horst, J.; Meyer, H.; De Vries, A.","","1991","In het voorjaar van 1991 richtte de Stuurgroep Vernieuwing Bijlmermeer zich tot de vakgroep ""Ontwerpen van Stedelijke Gebieden en Woningbouw"" van de TU-Delft met het verzoek een integrale plananalyse van alle plannen uit de periode 1965-1991 te produceren. De Bijlmermeer: gedurende haar korte bestaan zonder twijfel het meest bestudeerde, beschreven en bekritiseerde stadsdeel van Nederland. Waarom dan nog een studie? Alles wat er te zeggen valt over de Bijlmermeer lijkt immers al wel gezegd en geschreven. Echter de veelheid aan artikelen, boeken, rapporten, studies, plannen en tegen- plannen heeft ook een vertroebelend effekt. Het is moeilijk geworden om door de bomen het bos nog te zien. Of anders gezegd, om in de grote hoeveelheid materiaal nog een ""rode draad"" en duidelijke accenten te ontwaren. Deze studie heeft vooral tot doel de grote hoeveelheid plannen en voorstellen die ooit voor de Bijlmer gemaakt zijn, overzichtelijk te ordenen en aan te geven welke lijn en welke accenten er zijn te zien.","Bijlmer; woningbouw; stedelijke gebieden","nl","book","Publikatieburo Bouwkunde","","","","","","","","Architecture","Urbanism","","","",""
"uuid:c22a723a-2e74-42bf-aa53-72fd2cd05226","http://resolver.tudelft.nl/uuid:c22a723a-2e74-42bf-aa53-72fd2cd05226","Woningbehoefte- en migratieonderzoek Woerden en regio West-Utrecht","Boelhouwer, P.J.; Ter Bogt, R.; De Vries, P.","","1997","","Nederland; Utrecht (provincie); migratie; woningbehoefte-onderzoek; woningonderzoek","en","book","Delft University Press","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:408938eb-f9eb-4c3a-811c-6cb6fdb356c5","http://resolver.tudelft.nl/uuid:408938eb-f9eb-4c3a-811c-6cb6fdb356c5","Stralingsbescherming; inleiding tot de stralingshygiene","Weber, J.; Rasmussen, C.E.; Passchier, W.F.; De Vries, W.","","1985","","stralingsgezondheidskunde","nl","book","Delftse Uitgevers Maatschappij","","","","","","","","","","","","",""
"uuid:a027fe9f-cfd9-4aa0-b75b-43b42817f21c","http://resolver.tudelft.nl/uuid:a027fe9f-cfd9-4aa0-b75b-43b42817f21c","De prijsontwikkeling van koopwoningen","Boelhouwer, P.J.; Conijn, J.B.S.; De Vries, P.","","1995","Deze rapportage doet verslag van een korte studie naar de prijsontwikkeling op de markt van koopwoningen. Aanleiding hiervoor vormt een onderzoeksvraag van MAB bv. Omdat deze organisatie in toenemende mate betrokken is bij de ontwikkeling van koopwoningen, wenst zij inzicht te hebben in de prijsontwikkeling van koopwoningen. Centraal in de analyses staat de periode vanaf 1975 tot aan de tweede helft van 1995. Deze periode wordt gekenmerkt door een aantal duidelijke groei- en stagnatiefasen. In het onderhavige onderzoek worden verklaringen aangedragen voor de prijsontwikkeling van koopwoningen in de onderscheiden fasen. Deze kennis kan worden ingezet om ook mogelijke toekomstige ontwikkelingen te kunnen inschatten.","koopwoningen; prijsontwikkeling","nl","book","Delftse Universitaire Pers","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:fdb53ec1-7575-4c78-ae4c-4b4a0669a71a","http://resolver.tudelft.nl/uuid:fdb53ec1-7575-4c78-ae4c-4b4a0669a71a","Measuring and explaining house price developments","De Vries, P.","","2010","This study discusses ways of measuring and explaining the development of house prices. The goal of the research underpinning this dissertation was to develop a methodological framework for studying these developments. This framework relates, first, to correcting for changes in the composition of swellings and, second, to the fundamentals of the price development. Using the weighted repeat sales method and sale price apparaisal ratio (SPAR) method house price indexes wer developed for the Netherlands. Both the Dutch land registry office and Statistics Netherlands publish the SPAR based house price index monthly. To explain and predict changes in prices a house price model is presented. As suggested in literature on western housingmarkets, the Dutch house price developments can be explained by demand-oriented short-run term variables and a long-run term variable. Using the house price model, this work identifies the fundamental factors in the developmentof house prices, a long-run equilibrium between interest payments and income, and the weak relationship on an aggregated level between house prices and newly built dwellings.","house price","en","book","IOS Press","","","","","","","","OTB Research Institute","Housing Studies","","","",""
"uuid:b647cda8-5e28-4547-9488-26b925f3c0d4","http://resolver.tudelft.nl/uuid:b647cda8-5e28-4547-9488-26b925f3c0d4","The theory of Chris van Leeuwen: Some important elements","De Jong, T.; De Vries, G.; Tjallingii, S.; Duijvestein, K.; Sijmons, D.F.","","2015","Chris van Leeuwen (1920-2005) was a lecturer and later Professor of Ecology at the Faculty of Architecture of the Delft University of Technology from 1970 until his retirement in 1987. His work not only formed the basis for thinking on sustainable built environments at the Faculty of Architecture, but also formed the basis for national policies on sustainable spatial planning. In particular, the principle of ecological main structure, still in use in current policies is based on his work. This book is a tribute to his pioneering work.","ecology; Theory of Van Leeuwen; Relation theory","en","book","","","","","","","","2015-07-09","Architecture and The Built Environment","","","","",""
"uuid:8b53ad8b-8539-4377-bc11-79ff2dd8e7ff","http://resolver.tudelft.nl/uuid:8b53ad8b-8539-4377-bc11-79ff2dd8e7ff","Wonen in groeikernen: Segregatie of stille armoede? De woonuitgavenontwikkeling in de periode 1992-2000","Boelhouwer, P.J.; Mariën, A.A.A.; De Vries, P.","","1994","Medio oktober 1993 bracht het Onderzoeksinstituut OTB het rapport De woonuitgaven van huurders in vijf groeikernen uit. In het rapport werd verslag gedaan van een onderzoek naar de woonuitgaven van de huurders in vijf groeikernen: Alkmaar, Almere, Lelystad, Spijkenisse en Zoetemeer. De studie werd uitgevoerd als voorbereiding op een mogelijk SEV -experiment. In de korte tijd dat het vooronderzoek werd uitgevoerd, kon alleen de situatie in 1991 worden bestudeerd. Op basis van de forse huurverhogingen van de afgelopen jaren, de specifieke huuropbouw in een aantal groeikernen en de naderende IHS-discussie heeft het Onderzoeksinstituut OTB mede op verzoek van de betrokken groeikernen een vervolgonderzoek uitgevoerd om de resultaten uit de SEV -studie te actualiseren en meer specifiek de positie van de minima in de groeikernen nu en in de toekomst te kunnen vaststellen. Naast de vijf eerder genoemde groeigemeenten, heeft ook Capelle aan den IJssel interesse getoond voor een nadere uitwerking van het project.","Nederland; gegevens; woonkosten","nl","book","Delftse Universitaire Pers","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:15e01b6c-57b7-4229-8dda-9eefaf979443","http://resolver.tudelft.nl/uuid:15e01b6c-57b7-4229-8dda-9eefaf979443","Principles of river engineering: The non-tidal alluvial river","Jansen, P.Ph.; Van Bendegom, L.; Van den Berg, J.; De Vries, M.; Zanen, A.","","1994","","applied hydraulics","en","book","Delftse Uitgevers Maatschappij","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:68ef68b6-aee0-4683-9f35-0b9cf1b384a1","http://resolver.tudelft.nl/uuid:68ef68b6-aee0-4683-9f35-0b9cf1b384a1","Benchmarking Universiteitsvastgoed: Managementinformatie bij vastgoedbeslissingen","Den Heijer, A.C.; De Vries, J.C.","","2004","Voor u ligt het eindrapport van het onderzoek ""Benchmarking universiteitsvastgoed"". Dit rapport is de samenvoeging van twee deel producten: het theorierapport (verschenen in december 2003) en het praktijkrapport (verschenen in januari 2004). Onderwerpen in het theoriedeel zijn de analyse van andere benchmarkinitiatieven en de universitaire informatiebehoefte. Onderwerpen in het praktijkdeel zijn de feitelijk geregistreerde gegevens binnen de universiteiten en de haalbaarheid van benchmarking, ook volgens de universiteiten zelf. In het laatste hoofdstuk worden de bevindingen uit het theorie- en praktijkdeel gecombineerd tot conclusies en een stappenplan. Dit rapport bevat tevens een managementsamenvatting.","real estate & housing; benchmarking; universiteitsvastgoed","nl","book","Publikatieburo Bouwkunde","","","","","","","","Architecture","Real Estate & Housing","","","",""
"uuid:f92bed59-83dd-43ba-aaa2-0f1d50f0c425","http://resolver.tudelft.nl/uuid:f92bed59-83dd-43ba-aaa2-0f1d50f0c425","Morphological computations","De Vries, M.","","1987","Lecture notes on morphological computations","sediment transport; morhpodynamics","en","book","TU Delft","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:c12d598f-18ef-4201-b793-eace0f04a589","http://resolver.tudelft.nl/uuid:c12d598f-18ef-4201-b793-eace0f04a589","Woningmarktonderzoek Venlo en Tegelen: Naar een woningbouwprogrammering: Een samenvatting","Boelhouwer, P.J.; De Vries, P.","","1997","","Woningmarktonderzoek; Venlo; Tegelen","nl","book","Delftse Universitaire Pers","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:58f4379a-1666-4b1e-ab4b-55e747e0dc2f","http://resolver.tudelft.nl/uuid:58f4379a-1666-4b1e-ab4b-55e747e0dc2f","Delftselect","Graafland, A.; Leupen, B.; De Vries, N.","","1996","Dit boek presenteert het afstudeerwerk van een vijftiental Bouwkunde-studenten en studentes in de periode 1992-1994. Bij deze selectie is gezocht naar plannen die 'de' Delftse traditie van het 'vorm volgt functie' en 'eerlijk bouwen' verlaten hebben en op zoek zijn naar andere en onbekende wegen in het architectonisch en stedebouwkundig ontwerpen.","afstudeerontwerpen","nl","book","Publikatieburo Bouwkunde","","","","","","","","Architecture","Architecture","","","",""
"uuid:ec644213-2189-42a8-8722-fdc00e26d67e","http://resolver.tudelft.nl/uuid:ec644213-2189-42a8-8722-fdc00e26d67e","Prijsvorming nieuwbouw en bestaande koopwoningen","Conijn, J.B.S.; De Vries, P.; Stauttener, T.J.","","1998","","koopwoningen; koopprijs; nieuwbouw; bestaande bouw","nl","book","Delft University Press","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:8b2a1801-3cd0-42e6-abc7-3af4dac4dd3e","http://resolver.tudelft.nl/uuid:8b2a1801-3cd0-42e6-abc7-3af4dac4dd3e","Carbon policies: Do they deliver in the long run?","Chappin, E.J.L.; Dijkema, G.P.J.; De Vries, L.J.","","2010","Carbon taxation and emission trading are policy instruments for achieving significant CO2 emission reduction by inducing a shift in technology and fuel choice. Simulations with a quantitative agent-based model of a competitive electricity generation sector show that under both policies CO2 emissions increase for 10-15 years due to the long life cycle of power plants. Dramatic reductions materialize after 20-40 years when a tight cap or sufficient tax level is maintained. When taxes are set equivalent to trading prices, taxation induces earlier investment in CO2 abatement, a better balance between capital and operating costs and lower long-run electricity prices.","","en","book chapter","Elsevier","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:b1f221a0-96cf-4e52-b1ba-84d4f18b6d57","http://resolver.tudelft.nl/uuid:b1f221a0-96cf-4e52-b1ba-84d4f18b6d57","On the Problems, challenges and prospects for the european higher engineering education arising from the global economic crisis","De Vries, P.; Moropoulou, A.","","2013","The “global” economic crisis has affected multiple aspects of the daily life in all member states of the European Union and beyond. In this article we would like to take a closer look at the consequences of this crisis on European Higher Engineering Education (HEE). In this analysis, the focus is on the financial, structural and institutional consequences while the concerns are at the educational level. Our purpose is to clarify the actual situation and to inform the discussion as there is no doubt that the current crisis will continue to challenge the educational structures and institutions.","","en","book chapter","Société Européenne pour la Formation des Ingénieurs","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:e38c9495-7978-48d6-8bd4-5e5129d92c2e","http://resolver.tudelft.nl/uuid:e38c9495-7978-48d6-8bd4-5e5129d92c2e","The new learning environment is personal","De Vries, P.","","2013","In a traditional sense the learning environment is qualified as the institutional setting for the teaching and learning to take place. This comprises the students, the teachers, management, the services and all the buildings, the classrooms, the equipment, the tools and laboratories that constitute the social and physical environment. This ignores the fact that learning is not confined to the institution, but is taking place all the time and everywhere also in connection to the institutional curriculum and even more so in an interconnected world. The factory model of mass instruction that worked fine for ages cannot cope with the rapidly changing landscape of higher education (HE) due to the increasing demand for HE, the changing technology, the changing expectations of the students, the demands of the global workplace and the Europe 2020 ambition to become a smart, sustainable and inclusive economy (EU, 2013). Although most institutions are trying to preserve their legacy model, a good number feel forced to review their educational policy and to date most schools are involved in what can be labeled as ‘reengineering the learning environment’. This chapter wants to augment the discussion on the characteristics of the ‘new learning environment’ and the consequences for higher education (HE).","","en","book chapter","SEFI","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:17f73a20-0c87-4826-b9f3-d98396266a49","http://resolver.tudelft.nl/uuid:17f73a20-0c87-4826-b9f3-d98396266a49","Urban Transformation in the Northern Randstad: How Institutions Structure Planning Practice","De Vries, Jochem (Universiteit van Amsterdam); Zonneveld, W.A.M. (TU Delft Spatial Planning and Strategy)","Salet, Willem (editor)","2018","This chapter discusses the empirical value of looking at planning practice through institution/pragmatism lenses. The notion of institutions that provide actors with a logic of appropriateness and ideas about planning as a communicative practice set the stage for an analysis of the use of environmental norms in Dutch planning practice. On the basis of three cases it appears that several ways exist of bridging the tensions between the institutional and pragmatist perspective.","spatial planning; institutions; institutionalism; pragmatism","en","book chapter","Routledge - Taylor & Francis Group","","","","","Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2019-01-05","","","Spatial Planning and Strategy","","",""
"uuid:665a9d05-8dab-4a18-a15b-64f477bdfd4d","http://resolver.tudelft.nl/uuid:665a9d05-8dab-4a18-a15b-64f477bdfd4d","Aggregators today and tomorrow: From intermediaries to local orchestrators?","Poplavskaya, K. (TU Delft Energie and Industrie; AIT Austrian Institute of Technology); De Vries, Laurens (TU Delft Energie and Industrie)","","2020","At the forefront of energy transition, aggregators unlock value in front of and behind the energy meter. The business models of aggregators are changing rapidly, influenced by changes in technology, the market design, and regulatory framework. This chapter provides an overview of the leading aggregators in Europe and their underlying business models. Based on an assessment of changes in technology and regulation, the authors proceed to identify new opportunities for aggregators in the increasingly distributed energy system that deliver value to customers and the energy system as a whole.","Aggregators; Business model innovation; Electricity market; European electricity sector regulation","en","book chapter","Elsevier","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2020-08-20","","","Energie and Industrie","","",""
"uuid:b7618e36-0dcb-406c-842d-13744839d2c6","http://resolver.tudelft.nl/uuid:b7618e36-0dcb-406c-842d-13744839d2c6","Ontology-based query of two Dutch topographic data sets: An emergency response case","Zlatanova, S.; De Vries, M.E.; Van Oosterom, P.J.M.","","2010","","databases; integration query; reasoning; content-based vector","en","conference paper","International Society of Photogrammetry and Remote Sensing (ISPRS)","","","","","","","","OTB Research Institute","Department of GIS Technology","","","",""
"uuid:625a9319-0bc2-43a4-881f-a68fb2f89f6d","http://resolver.tudelft.nl/uuid:625a9319-0bc2-43a4-881f-a68fb2f89f6d","Reengineering the learming process in a transport company","De Vries, P.; Lukosch, H.K.","","2010","Swift changes in the regulations and the organization of the transport sector make innovation an absolute necessity. A company’s ability to cope with these changes depends largely on the learning capacity of the organization. Therefore in the transport case described in this paper the company decided that reengineering of the learning strategy was needed to handle the needs of their mobile workforce also in the long term. The strategy is based on a multi dimensional design using sound educational concepts and recent insights in the changing knowledge landscape in combination with Learning 2.0 elements to handle the ever changing learning demands. The multi faceted solution is an integrated cross functional business portal with information, learning and performance improvement as the essential processes in the design. The portal is online and acceptance is clearly growing. Process monitoring and evaluation supply data on the usage and success of this integrated approach.","reengineering; learning strategy; transport; learning 2.0; business portal","en","conference paper","","","","","","","","","Technology, Policy and Management","Multi-Actor Systems","","","",""
"uuid:f597504e-17c2-4d62-a809-7909f5295f2d","http://resolver.tudelft.nl/uuid:f597504e-17c2-4d62-a809-7909f5295f2d","Sediment exchange between the subaqueous and subaerial coastal zones","De Vries, S.; De Schipper, M.A.; Ranasinghe, R.W.M.R.J.B.; Stive, M.J.F.","","2010","The coastal system consists of a sub-aqueous and a sub-aerial zone which can be separated by a border. At this border sediment exchange takes place from one zone to the other. This paper hypothesizes that conditions and therefore sediment exchange at this border are dependent on active profile characteristics. To analyze morphological developments due to combined marine and aeolian processes data acquired at a measurement site located along the southwest Holland coast is exploited. Based on the monthly morphological profile measurements the border between the marine and aeolian zone is determined. It is found that during accretive conditions the vertical location of this border, and with that the conditions near the border, is dependent not on the foreshore slope of the surf/swash zone as expected but on the slope of the entire active profile.","Aeolian transport, Morphological measurements, active profile, coastline change","en","conference paper","","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:bef3ae8a-5e63-44c7-b73c-bf46bf8b3052","http://resolver.tudelft.nl/uuid:bef3ae8a-5e63-44c7-b73c-bf46bf8b3052","SPEX: An in-orbit spectropolarimeter for planetary exploration","Snik, F.; Karalidi, T.; Keller, C.; Laan, E.; Ter Horst, R.; Navarro, R.; Stam, D.; Aas, C.; De Vries, J.","","2008","SPEX (Spectropolarimeter for Planetary EXploration) is an innovative, compact remote-sensing instrument for detecting and characterizing aerosols. With its 1-liter volume it is capable of full linear spectropolarimetry, without moving parts. High precision polarimetry is performed through encoding the degree and angle of linear polarization of the incoming light in a sinusoidal modulation of the intensity spectrum. This is achieved by using an achromatic quarter-wave retarder, an athermal multiple-order retarder and a polarizing beamsplitter behind each entrance pupil. Measuring a single intensity spectrum thus provides the spectral dependence of the degree and angle of linear polarization. Polarimetry has proven to be an excellent tool to study microphysical properties (size, shape, composition) of atmospheric particles. Such information is essential to better understand the weather and climate of a planet. Although SPEX can be used to study any planetary atmosphere, including the Earth’s, the current design of SPEX is tailored to study Martian dust and ice clouds from an orbiting platform: a compact module with 9 entrance pupils to simultaneously measure intensity spectra from 350 to 800 nm, in different directions along the flight direction (including two limb viewing directions). This way, both the intensity and polarization scattering phase functions of dust and cloud particles within a ground pixel are sampled while flying over it. In the absence of significant amounts of dust and clouds, the surface properties can be studied. SPEX provides synergy with instruments on rovers and landers, as it provides a global view of spatial and temporal variations of the planet.","aerosols; dust; Mars; spectropolarimetry","en","conference paper","SPIE","","","","","","","","Aerospace Engineering","DEOS","","","",""
"uuid:4660148f-c0d1-43d1-9d2b-d5aa40b2d284","http://resolver.tudelft.nl/uuid:4660148f-c0d1-43d1-9d2b-d5aa40b2d284","The House Price Index and its development: From mean price thru Repeat Sales to SPAR","De Vries, P.; Van der Wal, E.","","2009","","","en","conference paper","","","","","","","","","OTB Research Institute","Housing Systems","","","",""
"uuid:f8f0576e-32de-4cab-b7f8-c24e16ae969a","http://resolver.tudelft.nl/uuid:f8f0576e-32de-4cab-b7f8-c24e16ae969a","Modellen voor de woningbouwmarkt","De Vries, P.","","2009","","","nl","conference paper","Technische Universiteit Delft, Onderzoeksinstituut OTB","","","","","","","","OTB Research Institute","","","","",""
"uuid:f98e42ea-06fd-4d4f-b8c5-7ea6b167f6b3","http://resolver.tudelft.nl/uuid:f98e42ea-06fd-4d4f-b8c5-7ea6b167f6b3","Semantic 3D city model to raster generalisation for water run-off modelling","Verbree, E.; De Vries, M.E.; Gorte, B.G.H.; Oude Elberink, S.; Karimiou, G.","","2013","Water run-off modelling applied within urban areas requires an appropriate detailed surface model represented by a raster height grid. Accurate simulations at this scale level have to take into account small but important water barriers and flow channels given by the large-scale map definitions of buildings, street infrastructure, and other terrain objects. Thus, these 3D features have to be rasterised such that each cell represents the height of the object class as good as possible given the cell size limitations. Small grid cells will result in realistic run-off modelling but with unacceptable computation times; larger grid cells with averaged height values will result in less realistic run-off modelling but fast computation times. This paper introduces a height grid generalisation approach in which the surface characteristics that most influence the water run-off flow are preserved. The first step is to create a detailed surface model (1:1.000), combining high-density laser data with a detailed topographic base map. The topographic map objects are triangulated to a set of TIN-objects by taking into account the semantics of the different map object classes. These TIN objects are then rasterised to two grids with a 0.5m cell-spacing: one grid for the object class labels and the other for the TIN interpolated height values. The next step is to generalise both raster grids to a lower resolution using a procedure that considers the class label of each cell and that of its neighbours. The results of this approach are tested and validated by water run-off model runs for different cellspaced height grids at a pilot area in Amersfoort (the Netherlands). Two national datasets were used in this study: the large scale Topographic Base map (BGT, map scale 1:1.000), and the National height model of the Netherlands AHN2 (10 points per square meter on average). Comparison between the original AHN2 height grid and the semantically enriched and then generalised height grids shows that water barriers are better preserved with the new method. This research confirms the idea that topographical information, mainly the boundary locations and object classes, can enrich the height grid for this hydrological application.","multi-scale modelling; water run-off modelling; 3D city models; semantic generalisation","en","conference paper","ISPRS","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:f68acfbe-a919-4d0f-9993-4bf2f8adf3f5","http://resolver.tudelft.nl/uuid:f68acfbe-a919-4d0f-9993-4bf2f8adf3f5","Encoding continuous spatial phenomena in GML","De Vries, M.E.; Ledoux, H.","","2009","","","en","conference paper","European Geoscience Union General Assembly, EGU","","","","","","","","OTB Research Institute","GIS Technology","","","",""
"uuid:9fb481b4-6361-4d06-822c-419c330ed740","http://resolver.tudelft.nl/uuid:9fb481b4-6361-4d06-822c-419c330ed740","Using Stereo Photo Measurements to Analyze the Surfability of Ship Induced Waves","De Vries, S.; De Schipper, M.A.; Van Thiel de Vries, J.S.M.; Uijttewaal, W.S.L.; Stive, M.J.F.","","2008","The objective of this paper is to demonstrate the use of Stereo Photogrammetry (SP) measuring ship-generated waves and to determine under which conditions they are suitable for surfing. A physical experiment is conducted to gain insight in ship wave behavior under specific conditions. Waves are generated by a hull and are measured using SP. It is concluded that the SP technique holds great potential in laboratory use and ship waves can potentially be used for surfing purposes.","stereo photogrammetry; wave field measurements; surfing; ship waves","en","conference paper","IAHR","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:ba318e77-4bf2-40b5-94e4-e23f3dc4f6ed","http://resolver.tudelft.nl/uuid:ba318e77-4bf2-40b5-94e4-e23f3dc4f6ed","What, Where, and Which? A Nested Logit Model for Dutch Housing Choice","Blijie, B.; De Vries, J.J.","","2006","In the Netherlands, changes on the housing market and overloading of the transport system require a policy that pays attention to both sides of the coin. To make projections of possible scenarios, under different policies, models are developed to study the transport system, the housing market and their interaction. To investigate residential choice behavior of households and specifically the influence of accessibility, we developed a nested logit (NL) model with nests for dwelling and neighborhood characteristics. This paper presents the outcomes of a Nested logit model for residential choice behavior of low-educated households consisting of two or more persons with a head under 60 years, which is estimated on revealed preference data. We test the performance of different nesting structures, by creating nests for tenure, unit type, and dwelling and neighborhood characteristics. We compare the coefficients of a standard multinomial logit (MNL) Model and the best performing NL-model to determine whether we measure a different sensitivity for accessibility (and other variables). Unlike similar studies on data from other countries, we find that the best performing nesting structure is: unit type – tenure – (remaining) dwelling types. The estimated coefficients indicate a more significant influence of accessibility. The dwelling type and travel time to the previous dwelling and to the workplaces of head and partner remain the most influential variables. With an eye to communication to policy makers and incorporation into integrated models, the MNL model is still a good option for modeling residential choice in a larger urban modeling context.","housing; location choice; discrete choice modelling","en","conference paper","Transportation Research Board","","","","","","Campus only","","Civil Engineering and Geosciences","Transport & Planning","","","",""
"uuid:01d073e8-9981-4aba-839d-9d06f0e0240a","http://resolver.tudelft.nl/uuid:01d073e8-9981-4aba-839d-9d06f0e0240a","Designing the market design for the electricity system of the future","Knops, H.P.A.; De Vries, L.J.; Huygen, A.","","2014","In many countries, the characteristics of the electricity supply system are changing. Important developments that are unfolding in the electricity sector are (i) the growth of generation from renewable sources (PV, wind) that are less controllable than traditional power plants and that for a large part feed in into the distribution grids, and (ii) the increase in the use of ‘controllable loads’ such as heat pumps and the batteries of electric vehicles (of which the use can be shifted in time), that are also mostly connected to distribution grids (IEA 2013). Other developments may lie ahead, such as the feasibility of decentralised controllable generation, e.g. from the fuel cells of future fuel cell cars, or low cost options of electricity storage.","","en","conference paper","","","","","","","","","Technology, Policy and Management","Engineering, Systems and Services","","","",""
"uuid:addb5f6f-b76c-44d9-bc57-6e69e747014b","http://resolver.tudelft.nl/uuid:addb5f6f-b76c-44d9-bc57-6e69e747014b","Gender and Diversity in Engineering MOOCs, a first Appraisal","Ihsen, S.; Jeanrenaud, Y.; De Vries, P.; Hennis, T.A.","","2015","","online learning; MOOCs; gender and diversity; engineering education","en","conference paper","","","","","","","","","Technology, Policy and Management","Multi Actor Systems","","","",""
"uuid:b5b1dd1e-ed4e-4bf6-8780-cc15d8a81304","http://resolver.tudelft.nl/uuid:b5b1dd1e-ed4e-4bf6-8780-cc15d8a81304","Sales performance of packaging for consumer electronics products","Wever, R.; De Vries, B.; Boezeman, G.; Roskam, R.; Uythoven, Ch.","","2007","The retail landscape for consumer electronics (CE) products has changed dramatically in the last two decades. Small independent retailers have made way for large retailers, selling CE goods in a supermarket way. Products are in their packaging on the shelf, to be grabbed by consumers in a self-service environment with a minimum of sales assistants available to provide advice. In such an environment the packaging has to make the product competitive. Taking the analogy with supermarkets further, the packaging may even try to trigger impulse purchases. To achieve this goal packaging for CE goods is increasingly becoming bigger, more colorful, and shinier. This is both costly and environmentally unfriendly. Therefore it is relevant to study impulse buying of CE goods in order to allow for design optimization, so that packages do not become bigger and shinier than necessary. To study the extent to which impulse buying really plays a role for CE products a survey was held (N=295) first asking people about planned purchases and a month later asking about actual purchases and the reasons for these purchases. The results from this survey show that impulse buying has become a significant factor in selling CE goods. Furthermore it gives some clue for which products impulse buying is most relevant. Hence, packaging can play a role in convincing people of a need to have a product. Besides this, there is of course the communication of product features in the battle against competing products, where people recognize a need, but have not chosen a specific product. To manage the design of sales packaging one needs to be able to measure it. Otherwise it is impossible to balance it with the logistical and environmental performance. The sales performance of packaging consists of several aspects; 'attracting attention', communicating and appealing. For each of these aspects tests exist, but these may not all be usable in a business setting where limited budgets, and especially limited time, is available. This paper will present a first version of an internet-based sales performance measurement tool, aiming at providing product managers with sales performance data.","","en","conference paper","International Association of Packaging Research Institutes","","","","","","","","Industrial Design Engineering","","","","",""
"uuid:6814b01f-08ab-4486-81b8-12cf6c1b8733","http://resolver.tudelft.nl/uuid:6814b01f-08ab-4486-81b8-12cf6c1b8733","The Stability Reserve in EU Carbon Emission Trading: Does it Deliver What it Promises?","Richstein, J.C.; Chappin, E.J.L.; De Vries, L.J.","","2014","In recent years the Europe Unions emission trading system (EU ETS) has experienced very low prices. This has triggered a political discussion about stabilising the EU ETS and improving incentives for investing in CO2 abatement. As a result of this discussion, the EU parliament accepted a proposal of the EU commission on the backloading of EU emission allowances (EUA), where the auctioning of EUAs is postponed to future time periods. Secondly the EU commission proposed a market stability reserve (MSR), which is a quantity based stabilisation policy, triggered by the amount of EUAs in circulation. Both policy measures together mark a significant change of the EU ETS policy framework. Using an agent-based electricity market simulation with endogenous investment and a CO2 market (including banking), we analyse the backloading reform and the proposed market stability reserve. We find backloading to have a short-term impact of CO2 prices; however, with and without backloading the EU ETS shows a risk of high CO2 prices and volatility. The market stability might act counter to its objectives: we found it to create a scarcity of credits and following this a high risk of CO2 price shocks and CO2 price volatility. This is because the target corridor for banking of the MSR is set below the hedging need of power producers.","","en","conference paper","","","","","","","","","Technology, Policy and Management","Engineering, Systems and Services","","","",""
"uuid:6aab8d63-494c-4ae3-9b34-59a207e51144","http://resolver.tudelft.nl/uuid:6aab8d63-494c-4ae3-9b34-59a207e51144","Deep dry etching process development for photonic crystals in InPbased planar waveguides","Van der Heijden, R.; Andriesse, M.S.P.; Carlström, C.F.; Van der Drift, E.; Geluk, E.J.; Van der Heijden, R.W.; Karouta, F.; Nouwens, P.; Siang Oei, Y.; De Vries, T.","","2004","Chlorine-based inductively coupled plasma etching processes are investigated for the purpose of etching twodimensional photonic crystals in InP-based materials. Etch rates up to 3.7 µm/min and selectivity’s to the SiN mask up to 19 are reported. For the removal of indiumchloride etch products both the application of elevated temperatures and high ion energy’s are investigated. The reactor pressure is an important parameter, as it determines the supply of reactive chlorine. It is shown, that N2 passivates feature sidewalls during etching, improving the anisotropy. Ions that impact onto the sidewalls, either directly or after scattering with the SiN-mask or hole interior, cause sidewall etching. Highly directional ion bombardment and vertical sidewalls in the SiN-mask are therefore crucial for successful etching of fine high aspect ratio structures.","photonic crystal; InP; ICP etching","en","conference paper","SPIE","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Delft Institute for Microelectronics and Submicron Technology","","","",""
"uuid:ae3898cb-134a-4189-9659-79228e237a9c","http://resolver.tudelft.nl/uuid:ae3898cb-134a-4189-9659-79228e237a9c","Towards an index for the rental sector: A model for the Flanders housing market","Vastmans, F.; De Vries, P.","","2011","","","en","conference paper","European Real Estate Society","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:92623d32-cef6-4ce6-81cc-6573782b6ced","http://resolver.tudelft.nl/uuid:92623d32-cef6-4ce6-81cc-6573782b6ced","Using a personal watercraft for monitoring bathymetric changes at storm scale","Van Son, S.T.J.; Lindenbergh, R.C.; De Schipper, M.A.; De Vries, S.; Duijnmayer, K.","","2009","Monitoring and understanding coastal processes is important for the Netherlands since the most densely populated areas are situated directly behind the coastal defense. Traditionally, bathymetric changes are monitored at annual intervals, although nowadays it is understood that most dramatic changes are related to high-energy events like storms. To monitor their impact it is important to have access to a flexible surveying platform that is directly operational after the storm. For this reason, Delft University of Technology has developed a PWC (Personal Watercraft) based surveying system. The objective of the present study is to monitor bathymetric changes on the shoreface of the straight sandy Holland coast on the temporal and spatial scale of storm impact. In this paper the PWC as a surveying platform is evaluated and it is demonstrated that both the theoretical and practical error assessment indicate a depth accuracy in the order of 1 decimeter, depending on wave conditions. Moreover, the depth maps resulting from the surveys show that observed morphological changes are in agreement with the expected behaviour considering literature of Van Rijn [1997]. The results on measurement accuracy and on observed coastal changes at storm scale demonstrate the potential of a flexible surveying platform such as a PWC.","","en","conference paper","","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:92fb037f-6e77-4bf1-b538-fcb88377c6c4","http://resolver.tudelft.nl/uuid:92fb037f-6e77-4bf1-b538-fcb88377c6c4","Morphological Development of a Mega-Nourishment: First Observations at the Sand Engine","De Schipper, M.A.; De Vries, S.; Stive, M.J.F.; De Zeeuw, R.C.; Rutten, J.; Ruessink, B.G.; Aarninkhof, S.G.J.; Van Gelder-Maas, C.","","2014","Large (mega-scale) nourishments have been proposed as a promising alternative for traditional beach and shoreface nourishments, especially for locations with large structural erosion and sufficient sediment to dredge. This paper examines the initial bathymetric evolution of the Sand Engine, a mega-nourishment of 17 million m3 protruding almost 1 km seaward from its surrounding coast. Topographic surveys show that, despite the blunt initial shape of the nourishment, the sediment is reworked into a nearly symmetrical (bell curve like) shape in less than 1.5 years. The cross-shore extent decreased by 150 m in this period which is a reduction of 15 % of its original extent. Simultaneously, the alongshore size of the nourishment increased by 60 % as the sediment is redistributed to the adjacent coasts. This is also reflected in the large 1.6 million m3 loss of sediment on the peninsula. Almost 70 % of this volume is found to accrete in adjacent coastal sections. Although not all sediment loss from the peninsula could be relocated, the findings reveal that the Sand Engine mega nourishment is feeding its surrounding coast substantially.","feeder nourishment; mega nourishment; coastal safety; sediment transport; sand engine; Sand Motor; ICCE 2014","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:a56405b2-66ce-496e-bffa-4f9d794408fe","http://resolver.tudelft.nl/uuid:a56405b2-66ce-496e-bffa-4f9d794408fe","Dune development and aeolian transport along the Holland coast","De Vries, S.; Southgate, H.N.; Kanning, W.; Ranasinghe, R.W.M.R.J.B.","","2012","","","en","conference paper","University of Twente","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:210d4da5-c224-4217-8545-7f3f0d7418bb","http://resolver.tudelft.nl/uuid:210d4da5-c224-4217-8545-7f3f0d7418bb","Process-based modeling of coastal dune development","Muller, M.C.; Roelvink, D.; Luijendijk, A.P.; De Vries, S.; Van Thiel de Vries, J.S.M.","","2012","In this paper, the aeolian transport model DUNE (Sauermann et al., 2001, Kroy et al., 2002) that describes important features and dynamics of typical desert dunes, is extended such that it can be applied in sandy coastal areas. Initial tests explore the limitations of the model in coastal areas after which adaptations are proposed and implemented. The final model version is applied to a coastal profile near Vlugtenburg (Dutch Holland coast).","aeolian transport; dunes; nourishments; coastal morphology; process-based modeling","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:e2b0bd6a-db79-4c98-86e9-0881f804cf2f","http://resolver.tudelft.nl/uuid:e2b0bd6a-db79-4c98-86e9-0881f804cf2f","A review of agent-based models for forecasting the deployment of distributed generation in energy systems","Veneman, J.F.; Oey, M.A.; Kortmann, L.J.; Brazier, F.M.; De Vries, L.J.","","2011","Agent-based models are seeing increasing use in the study of distributed generation (DG) deployment. Researchers and decision makers involved in the implementation of DG have been lacking a concise overview of why they should consider using agent-based modeling (ABM) for forecasting purposes. Since this particular field of inquiry has only developed over the past few years there has yet to be a review of ABMs of DG deployment. In light of these developments the reasons to consider using ABM to develop a deeper understanding of the transition issues relevant to the increasing use of DG are presented. The current state of ABMs of DG deployment is reviewed followed by areas for improving these models and directions for further research","distributed generation, energy forecasting, agentbased modeling, consumer behavior, product deployment","en","conference paper","","","","","","","","","Technology, Policy and Management","Multi Actor Systems","","","",""
"uuid:664c1cb4-9619-45cc-ad5b-7302849dae48","http://resolver.tudelft.nl/uuid:664c1cb4-9619-45cc-ad5b-7302849dae48","Sediment exchange between the subaqueous and subaerial coastal zones","De Vries, S.; De Schipper, M.A.; Ranasinghe, R.W.M.R.J.B.; Stive, M.J.F.","","2011","The coastal system consists of a sub-aqueous and a sub-aerial zone which can be separated by a border. At this border sediment exchange takes place from one zone to the other. This paper hypothesizes that conditions and therefore sediment exchange at this border are dependent on active profile characteristics. To analyze morphological developments due to combined marine and aeolian processes data acquired at a measurement site located along the southwest Holland coast is exploited. Based on the monthly morphological profile measurements the border between the marine and aeolian zone is determined. It is found that during accretive conditions the vertical location of this border, and with that the conditions near the border, is dependent not on the foreshore slope of the surf/swash zone as expected but on the slope of the entire active profile.","aeolian transport, morphological measurements, active profile, coastline change","en","conference paper","","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:3dbc82f7-c06b-42d5-be0c-eac62f2e3c05","http://resolver.tudelft.nl/uuid:3dbc82f7-c06b-42d5-be0c-eac62f2e3c05","Understanding power plant investment decision processes","Groot, J.; Richstein, J.C.; De Vries, L.J.","","2013","In order to understand how companies make investment decisions under conditions of deep uncertainty, we interviewed a number of actors in the Dutch electricity sector. Most of the economic literature that is devoted to this question is prescriptive in nature, describing rational methods to the investment decision process (such as real options and portfolio analyses). While these analysis tools play a role in the investment decision, the actual process is much more complicated. The reason is that the investor never has all the information that he would need to make a rational decision. Our research shows that the investment process is guided by a set of satisficing goals, rather than profit maximization; a multi-stage project management approach is used to cope with the lack of information; and the resources for information processing limit the scope of the analysis. We find several differences between companies in their decision making process and goals. These are a consequence of company characteristics such as the company size, ownership, vertical integration and geographic focus. The chosen electricity generation technology and inter-organizational dynamics also affect the investment process.","","en","conference paper","","","","","","","","","Technology, Policy and Management","Engineering, Systems and Services","","","",""
"uuid:8ca0ffc7-c317-4c80-aadb-d35323f51824","http://resolver.tudelft.nl/uuid:8ca0ffc7-c317-4c80-aadb-d35323f51824","Storm Surge Barrier: Overview and Design Considerations","Mooyaart, L.F.; Jonkman, S.N.; De Vries, P.A.L.; Van der Toorn, A.; Van Ledden, M.","","2014","In this study an overview of existing and planned storm surge barriers in the world is provided. A systematic analysis relates functional requirements (e.g. navigation and tidal exchange) to the main barrier characteristics (e.g. gate type, dimensions). Furthermore, as the costs of barriers are an important issue in the planning, available cost information is analyzed and related to main barrier characteristics. An approach to provide a preliminary cost estimate of new barriers is presented. Finally, some critical technical challenges are discussed and related to functional requirements and boundary conditions. Overall, the results of this study can assist in the initial design and planning phase of storm surge barriers for new locations.","storm surge barrier; coastal structures; flood risk; coastal protection; design consideration; ICCE 2014","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:57eaed59-a5fb-452f-8913-27fa35b70323","http://resolver.tudelft.nl/uuid:57eaed59-a5fb-452f-8913-27fa35b70323","Reconnaissance Level Studies on a Storm Surge Barrier for Flood Risk Reduction in the Houston-Galveston Bay","Jonkman, S.N.; Mooyaart, L.F.; Van Ledden, M.; Stoeten, K.J.; De Vries, P.A.L.; Lendering, K.T.; Van der Toorn, A.; Willems, A.","","2014","The Houston - Galveston area is at significant risk from hurricane induced storm surges. This paper summarizes ongoing studies on flood risk reduction for the region. Firstly, based on a simplified probabilistic hurricane surge model , the return periods of surges within the bay have been estimated. This model framework can be used to assess the effectiveness of several risk reduction interventions. Sketch- and conceptual designs have been made of a storm surge barrier in the Bolivar Roads, that would be part of the Ike Dike coastal protection concept. Such a storm surge barrier would consist of two parts, an environmental section for flow requirements (consisting of caissons with vertical gates) and a navigation section of the barrier (consisting of a barge gate), which would allow unhindered passage of navigation during normal conditions. Future questions and challenges for flood risk reduction in the Bay are identified.","storm surge barrier; hurricanes; probabilistic analysis; flood risk; coastal protection; flood defences; Houston-Galveston Bay; ICCE 2014","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:abc418de-8ad3-410c-9f20-813cc8033985","http://resolver.tudelft.nl/uuid:abc418de-8ad3-410c-9f20-813cc8033985","Dune erosion near sea walls: Model-data comparison","Van Geer, P.; De Vries, S.; Van Dongeren, A.; Van Thiel de Vries, J.S.M.","","2012","This paper describes the validation of the dune erosion model XBeach with laboratory measurement data of dune erosion in the presence of sea walls and revetments. Simulation results show that the essential dune set back processes are captured by the model and that the measurements at most locations are approximated quite well. Some aspects however need more attention in further research. The alongshore distance from a fixed structure over which the dune erosion is influenced was not well captured by the model. Also the absence of short wave run-up on the revetment still causes an underestimation of the amount of dune erosion above the revetment. Furthermore the influence of the angle of incidence was investigated with a conceptual model approach. This revealed a relatively high influence of the angle of incidence on the governing flow pattern in front of a transition between a dune and a fixed structure.","dune erosion; dike; sea wall; XBeach; validation; laboratory experiments","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:07a8eef4-3a42-4cfc-8de8-527cab661f04","http://resolver.tudelft.nl/uuid:07a8eef4-3a42-4cfc-8de8-527cab661f04","Analysis of embayed beach planform stability in Danang, Vietnam","Do, T.K.A.; Stive, M.J.F.; Brouwer, R.L.; De Vries, S.","","2015","This study presents an analysis of the planform stability of the complex embayed beach system of Da Nang Bay, central Vietnam. As a result of the intensification of extreme weather conditions and human activities in this area (e.g. land reclamation, river damming, and coastal structures), coastal safety as well as economic and ecological values are under pressure. In order to anticipate future changes in the system, it is important to understand the morphological stability of the beaches in Da Nang Bay. To obtain more insight into the hydrodynamics and morphodynamics of embayed beaches, we first employed the simple parabolic bay shape equation (PBSE) to determine the empirical morphological stability of the beaches: stable, dynamic equilibrium, natural reshaping or unstable. It was found that the predicted planform stability of the beaches in Da Nang Bay does not correspond to the observed behavior. It is hypothesized that the discrepancies between predicted and observed behavior of the embayed beaches in Da Nang Bay could possibly be attributed to a) the seasonal availability of sediment from the two rivers discharging in Da Nang Bay and b) the seasonality of the dominant wave direction that mainly determines the planform stability resulting from the PBSE. The aim of this study focuses on point b) and is twofold: 1) to obtain more insight into the planform stability of the beaches in Da Nang Bay by applying a more advanced model to predict, the wave climate and 2) to investigate seasonal variations in dominant wave direction affect the planform stability.","headland; wave direction; wave climate; diffraction; parabolic bay shape","en","conference paper","IAHR","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:1b9b84a8-148e-4250-82cb-306435dea7ad","http://resolver.tudelft.nl/uuid:1b9b84a8-148e-4250-82cb-306435dea7ad","Estimation of the vibration decrement of an offshore wind turbine support structure caused by its interaction with soil","Versteijlen, W.G.; Metrikine, A.; Hoving, J.S.; Smidt, E.H.; De Vries, W.E.","","2011","","","en","conference paper","European Wind Energy Association","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:f2fbb88c-dde8-479e-a595-6288a77019c1","http://resolver.tudelft.nl/uuid:f2fbb88c-dde8-479e-a595-6288a77019c1","Monitoring of beach surface properties with remote sensing","Hoonhout, B.M.; De Vries, S.; Baart, F.; Van Thiel De Vries, J.S.M.; Van der Weerd, L.; Wijnberg, K.","","2013","Existing aeolian transport formulae tend to overestimate the sediment transport volumes in coastal environments. Supply limiting factors like moisture content, shell patches, sediment sorting, vegetation and morphological features are believed to explain these overestimations. These supply limitations act on a variety of spatio-temporal scales that hinder relating supply and transport. Probabilistic graphical models (PGM) can be used to cope with the variety and complexity of these relations. A long term measurement campaign is started to feed such probabilistic models with data on the complex interaction between supply limitations and their influence on coastal aeolian transport and subsequently dune growth. The variety of spatio-temporal scales involved in supply limited coastal aeolian transport generally is not fully captured by traditional measurement techniques. This campaign uses, apart from traditional in-situ techniques, remote sensing and image analysis techniques to cover a variety of spatio-temporal scales that are related to coastal aeolian transport and supply limitations in particular. We aim to construct a dataset that contains long term and high resolution grid data as well as binary time series and a variety of in-situ measurements on (local) wind forcing, beach surface properties and aeolian transport. The probabilistic graphical models will be used to consolidate the dataset towards practical instruments to model the large scale and long term (LSLT) behavior we are finally interested in.","aeolian transport; supply limitations; remote sensing; moisture; sediment sorting","en","conference paper","Bordeaux University","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:ccfb0f0a-268b-4cea-b8ec-f47a78be7ae8","http://resolver.tudelft.nl/uuid:ccfb0f0a-268b-4cea-b8ec-f47a78be7ae8","Morphological developments after a beach and shoreface nourishment at Vlugtenburg beach","De Schipper, M.A.; De Vries, S.; Ranasinghe, R.W.M.R.J.B.; Reniers, A.J.H.M.; Stive, M.J.F.","","2012","Typically a beach is out of equilibrium after a nourishment is installed. To observe how a nourished beach behaves on the timescale of storms a monitoring campaign was set up at Vlugtenburg beach after a nourishment in the spring of 2009. Here we show a sediment budget analysis of the first 2.5 years for a coastal domain spanning 1750 m alongshore from -9 to +5 m NAP. To investigate the redistribution of nourished sand different sections of the profile are examined. Observations show that the initial response (first 6 to 12 months after construction) is large where the sediment eroded from the beach is transported offshore to form a subtidal bar. In the following period (until present) the losses in the domain are on the order of 40 m3 per m alongshore per year. These losses are concentrated in the profile around the waterline.","","en","conference paper","University of Twente","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:2b8a1bdb-0434-45e9-900d-9c55cfdffb6a","http://resolver.tudelft.nl/uuid:2b8a1bdb-0434-45e9-900d-9c55cfdffb6a","Modelling aeolian sediment accumulations on a beach","De Vries, S.; Van Thiel de Vries, J.S.M.; Ruessink, G.","","2013","This paper aims to conceptually simulate observed spatial and temporal variability in aeolian sediment transport rates, erosion and deposition on a beach. Traditional strategies of modeling aeolian sediment transport rates do not account for supply limitations that are common on natural beaches. A recently developed 1D linear advection model is used in which supply limitations are taken into account in a highly aggregated manner. It is shown that the model is able to simulate the appearance and disappearance of sediment accumulations. However, sediment accumulations alike observed in the field using ARGUS cameras behave on a different time and spatial scales.","aeolian transport; beach; numerical model","en","conference paper","Bordeaux University","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:62db827c-abd9-428a-8fd6-293a6da43c4d","http://resolver.tudelft.nl/uuid:62db827c-abd9-428a-8fd6-293a6da43c4d","Eolian sand transport monitored by terrestrial laser scanning","Lindenbergh, R.C.; Soudarissanane, S.S.; De Vries, S.; Coquet, M.; De Schipper, M.; Hejbudzka, K.; Duijnmayer, K.; Van Goor, B.; Cohen, A.","","2010","Morphodynamic changes at sandy coasts, as are dominant in The Netherlands, are typically monitored at yearly intervals by means of LIDAR. Meanwhile it is recognized that beach morphodynamics is not a regular process but is strongly correlated to meteorological conditions. A time series of 14 terrestrial laser scans of a beach experiment is analyzed, obtained during a time period of 88 hours characterized by changing weather conditions including strong wind and rain. It is shown that after a conversion to a suited spherical grid, different deformation regimes can be identified and that elevation changes rates below a millimeter an hour can be detected.","terrestrial laser scanning; change detection; eolian transport; coastal monitoring","en","conference paper","International Society of Photogrammetry and Remote Sensing (ISPRS)","","","","","","","","Aerospace Engineering","Remote Sensing","","","",""
"uuid:77eb34b6-f28a-47b8-81d8-19f9d6fad05d","http://resolver.tudelft.nl/uuid:77eb34b6-f28a-47b8-81d8-19f9d6fad05d","GML for exchanging topographic data","Quak, W.; De Vries, M.; Tijssen, T.; Stoter, J.; Van Oosterom, P.","","2002","","","en","conference paper","","","","","","","","","","","","","",""
"uuid:19c351bc-95c1-4daf-a421-adb4dba94b34","http://resolver.tudelft.nl/uuid:19c351bc-95c1-4daf-a421-adb4dba94b34","Determinants of the house prices in Romania: How to measure house prices in a new EU state","De Vries, P.; Faber, R.","","2009","This paper examines the construction of real estate databases and the valuation of properties in Buz?u, Romania. One of the criteria for candidate states for EU membership is an effective monitoring system for the land and real estate markets. The objective of this paper is twofold. First, the development of a set of databases, procedures and guidelines that enables a valuation process on the Romanian real estate market and secondly, using those databases, to gain insight into the real market value of recently sold properties. We use the observations of estate agents and banks starting in May 2007. Using hedonic regression, with house and neighbourhood characteristics, we estimate the house prices.","","en","conference paper","European Real Estate Society","","","","","","","","OTB Research Institute","Sectie VWM","","","",""
"uuid:79dc1a74-5cac-4cae-ac79-c7d8c73cc948","http://resolver.tudelft.nl/uuid:79dc1a74-5cac-4cae-ac79-c7d8c73cc948","Impact of Variable Renewable Energy on European Cross-Border Electricity Transmission","Brancucci Martinez-Anido, C.; De Vries, L.J.; Fulli, G.","","2012","The estimated growth of Europe’s electricity demand and the policy goals of mitigating climate change result in an expected increase in variable renewable energy. A high penetration of wind and solar energy will bring several new challenges to the European electricity transmission network. The objective of this paper is to understand the effects of a high penetration of variable renewable energy sources (RES) on the demand for cross-border electricity transmission in Europe. EUPowerDispatch, a minimum cost dispatch model is used to compare the impacts of different electricity generation and transmission portfolios on crossborder electricity transmission in 2025. The analysis makes use of the best-estimate scenario developed by the European Network of Transmission System Operators for Electricity (ENTSOE). Wind and solar energy curtailment needs and variations in load duration curves are analyzed for different scenarios. In addition, the role of hydro energy storage and pumping is analyzed as a complementary technology to transmission in the context of a high penetration of variable RES. The study shows that the planned expansion of the European transmission network is adequate for meeting the expected RES increase and it is needed to maintain the current level of security of supply in the face of the expected demand growth. If RES growth is faster than expected, cross-border transmission capacity will have to increase accordingly if significant RES curtailment is to be avoided.","renewable energy; electricity transmission; hydro storage","en","conference paper","","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:b4784827-633c-4ad3-8c85-518cafeff6e7","http://resolver.tudelft.nl/uuid:b4784827-633c-4ad3-8c85-518cafeff6e7","Eye Movements Disclose Decisions in Set","Broekens, D.J.; Kosters, W.A.; De Vries, T.","","2009","During the past several decades, much research has been done in the field of visual attention and cognitive processing, i.e., how does the human brain process visual stimuli. We show that the card game SET is a good candidate for investigating the relation between top-down versus bottom-up visual information processing. Further, we show that Machine Learning techniques can be effectively used to study this relation. We use these techniques to predict if (a) the player thinks he/she found a set (a particular threecard pattern), and (b) he/she correctly identifies a set, both based on eye movements of the player. Our results indicate the following. First, pop-out plays a role in SET-playing performance. Second, the more we move towards predicting correctness (the player found a correct set), the less important eye movements are and the more important player experience is. Third, the more we move towards predicting the claiming of a set (the behavior), the more important eye movements are and the less important player experience is. This indicates that eye movements disclose whether a player thinks he/she found a set or not, but not whether that player correctly identified a set.","","en","conference paper","","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Intelligent Systems","","","",""
"uuid:715d1cda-31d4-4987-87be-247cbb2d5529","http://resolver.tudelft.nl/uuid:715d1cda-31d4-4987-87be-247cbb2d5529","Surfing waves generated by a hull","De Schipper, M.A.; De Vries, S.; Henriquez, M.; Reniers, A.J.H.M.; De Koning Gans, H.J.; Labeur, R.J.; Stive, M.J.F.","","2009","In this paper a new wave pool concept is presented using ship hulls as wave generators. To evaluate the potential of such a concept a towing tank experiment is conducted to investigate ship wave generation in a confined space. In the towing tank experiment various hull sizes and velocities are examined to maximize the generated wave height. The laboratory data shows that when blocking of the cross section of the pool by the hull is large, the large return flow significantly influences the wave height. This is in contrast to the open water case where the return flow is much smaller and therefore is not incorporated in wave height predictions. Based on the results of the physical model tests an optimum hull size and velocity are derived to maximize the potential use for surfing and a preliminary design of the wave pool is proposed.","Wave generation; Wave current interaction; Ship waves; Surfing","en","conference paper","World Scientific Publishing","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:ba2ef164-f7ed-4248-b199-b1a1e55935dd","http://resolver.tudelft.nl/uuid:ba2ef164-f7ed-4248-b199-b1a1e55935dd","Load carrying capacity of large mortise and tenon joints in wooden mitre gates","Van de Kuilen, J.W.G.; Otterloo, J.; Ravenshorst, G.J.P.; De Vries, P.","","2014","Wooden mitre gates are used for centuries in waterways and canals. For newly built as well as the renewal of such gates, a number of wood species is used, ranging from oak to dense tropical hardwoods. As mitre gates have high loads to withstand, their strength verification has become more and more important. As strength verification rules for the complex mortise and tenon joints are lacking in most design codes, a research project has been performed to understand better the stress flow in these connections. A literature survey, an analytical analysis and a FEM analysis have been performed within this research project. The results allow for a much better understanding of the stress flow and of the resistance of these joint types.","mortise and tenon joints; mitre gates; FEM modelling; notches; Eurocode 5","en","conference paper","","","","","","","","","Civil Engineering and Geosciences","Structural Engineering","","","",""
"uuid:8f713adb-a5d5-429a-aa19-5c5847e57799","http://resolver.tudelft.nl/uuid:8f713adb-a5d5-429a-aa19-5c5847e57799","Models of dynamic data for emergency response: A comparative study","Zlatanova, S.; Dilo, A.; De Vries, M.E.; Fichtinger, A.","","2010","The first hours after a disaster happens are very chaotic and difficult but perhaps the most important for successfully fighting the consequences, saving human lives and reducing damages in private and public properties. Despite some advances, complete inventory of the information needed during the emergency response remains challenging. In the last years several nationally and internationally funded projects have concentrated on inventory of emergency response processes, structures for storing dynamic information and standards and services for accessing needed data sets. A good inventory would clarify many aspects of the information exchange such as data sets, models, representations; a good structuring would facilitate the fast access to a desired piece of information, as well as the automation of analysis of the information. Consequently the information can be used better in the decision-making process. This paper presents our work on models for dynamic data for different disasters and incidents in Europe. The Dutch data models are derived from a thorough study on emergency response procedure in the Netherlands. Two more models developed within the project HUMBOLDT reflect several cross border disaster management scenarios in Europe. These models are compared with the Geospatial Data Model of the Department of Homeland Security in USA. The paper draws conclusions about the type of geographical information needed to perform emergency response operations and the possibility to have a generic model to be used world-wide.","UML model; 3D; DBMS; spatial data infrastructure; hazard; disaster management","en","conference paper","","","","","","","","","OTB Research Institute for the Built Environment","OTB Onderzoek","","","",""
"uuid:78b4c204-0b59-4bf4-a5b6-1be4536d329c","http://resolver.tudelft.nl/uuid:78b4c204-0b59-4bf4-a5b6-1be4536d329c","Cooperative Control of Swarms of Unmanned Aerial Vehicles","De Vries, E.; Subbarao, K.","","2011","Potential function based swarm control is a technique using artificial potential functions to generate steering commands resulting in swarming behavior. This means that the vehicles in the swarm autonomously take care of flying in formation, resulting in steering the swarm, instead of all the individual vehicles being tasked separately. This form of cooperative control is very effective for large groups of unmanned aerial vehicles (UAVs). To test this technique, a simulation tool (in SIMULINK) has been developed using a swarm of quadrotors with nonlinear dynamics. Quadrotors are suitable testbeds due to their mechanical simplicity and can be described by reasonably simple dynamical equations of motion. The inner loop control laws for the quadrotor are based on a backstepping like technique with a nested multi-loop structure. After verification of the individual vehicle model, a multi-UAV controller was designed using potential functions to generate the swarming behavior. The results show that the potential function based method is effective in swarm aggregation. The swarm controller is able to cope with inflight changes of the number of agents if, due to communication limits, one or more agents drift in or out of range. The ability to avoid obstacles by adding obstacle avoidance terms to the steering commands is also shown. These terms are sensitive to the velocities of the swarm members and the gains. However, much better results are expected when a path shaping module is added. This will not only add the ability to fly along a path, but it will also solve the problem of saturated velocity commands due to large differences between the quadrotor position and the goal position.","","en","conference paper","American Institute of Aeronautics and Astronautics (AIAA)","","","","","","","","Aerospace Engineering","","","","",""
"uuid:829e941a-cae5-49ec-978b-a3bac07d0123","http://resolver.tudelft.nl/uuid:829e941a-cae5-49ec-978b-a3bac07d0123","The evaluation process of short training sessions in organizations","Overschie, M.G.F.; Lukosch, H.K.; De Vries, P.","","","This paper presents a critical reflection of the evaluation of learning processes in organizations. Based on learning and evaluation theories and concepts we discuss qualitative and quantitative evaluation processes, and its relationship to short training sessions to foster sustainable development. Short training sessions solve barriers for learning, and support informal learning. Reasons for paying more attention to informal learning are given. Historical cases, like the Dutch cleaner production case, show the role of learning and communication in the process of first and second change towards sustainable development. The NIDO Corporate Social Responsibility case, focusing on system innovation, show that traditional ways of quantitative performance measures, often required by stakeholder, don’t support the lengthy internal qualitative learning process. Cases on different forms of appearance of Microtraining, short training sessions, show improved communication, which might contribute to both first order, and second order change in organizations. These Microtraining sessions appear in formal and informal way, and ask for different evaluation processes. Different ways of evaluating both formal and informal learning are summarized. The traditional ways of evaluation will be valid for planned series of sessions with defined Microtrainer, topic and target group. This matches the traditional way of reporting for internal environmental management systems and certification, like EMAS and ISO. More informal, ad hoc and spontaneously ways of applying short session will need different evaluation methods. We can learn from new approaches in self-assessment and reflection and instruments to asses learning on the job, such as workplace diaries, and guided reflection.","","en","conference paper","","","","","","","","","Technology, Policy and Management","","","","",""
"uuid:f8696c68-d65c-47a4-832a-a05de0bf9081","http://resolver.tudelft.nl/uuid:f8696c68-d65c-47a4-832a-a05de0bf9081","Effects of vegetation on sediment transport, experience from laboratory measurements (abstract)","Vargas Luna, A.; Uijttewaal, W.S.J.; Crosato, A.; Tanczos, I.C.; De Vries, M.","","2013","","","en","conference paper","IAHR","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:13b20c8c-0f60-4bcd-b08a-e079d7f39d7d","http://resolver.tudelft.nl/uuid:13b20c8c-0f60-4bcd-b08a-e079d7f39d7d","Bewonerservaringen in seriematige passiefwoningen","Mlecnik, E.; Jansen, S.J.T.; Schuetze, T.; De Vries, G.","","2012","Deze studie onderzocht de bewonerservaringen van 21 sociale huurders in seriematig gebouwde passiefwoningen in Nederland. Gegevens werden verzameld over de bewoners, hun motivatie om te kiezen voor hun woning, hun algemene tevredenheid met de woning en hun tevredenheid met het comfort, de klimaatregeling, het ventilatie-onderhoud en de informatieverstrekking. Deze gegevens werden geanalyseerd rekening houdend met het door de bewoners genoteerde gedrag in winter- en zomersituaties. De bewoners bleken over het algemeen tevreden te zijn, maar klaagden wel met name over koude slaapkamers. Tevens was er relatief lage tevredenheid over het ventilatiesysteem en de informatieverstrekking. De studie vond dat geluid en tocht ontwerpmatig meer aandacht verdienen en dat de verstrekking van informatie kan worden verbeterd, bijvoorbeeld over het gebruik van het ventilatiesysteem, het openen van luiken en de werking van PV panelen. Betere bewaking van prestatiecriteria werd aanbevolen voor toekomstige projecten.","","nl","conference paper","","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:fcdff150-9c31-4ec5-b2a2-c8326ed3f67d","http://resolver.tudelft.nl/uuid:fcdff150-9c31-4ec5-b2a2-c8326ed3f67d","Developing a rent index for Flanders","Vastmans, F.; De Vries, P.","","2011","This paper describes the development of a rent index for Flanders, Belgium. This annual index, referred to as the huurprijsindex (rent index), is designed to detect changes in the rent of the overall stock of rental homes. We use the matched model methodology based upon repeat tenancy agreements, analogous to Case and Shiller’s geometric repeat sales model, to estimate the rent index. We use recorded data on the tenancy agreements of nearly five hundred thousand rental homes; more than 30,000 representing repeat agreements between 1990 and 2010. The accuracy of the index is determined using the 95% confidence interval. Given our target (a geometric mean index value) and the characteristics of the dataset (large but without property characteristics) our repeat tenancy agreements method seems to be adequate for calculating a rent index for Flanders.","","en","conference paper","Ecole Polytechnique Federale Lausanne","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:f07e6b80-8eea-4455-9c2e-4c1f7cd1ffff","http://resolver.tudelft.nl/uuid:f07e6b80-8eea-4455-9c2e-4c1f7cd1ffff","An Authentic Learning Strategy for Engineering Students to acquire Integrated Management Competencies","De Vries, P.; Kortmann, L.J.; Van den Bogaard, M.E.D.","","2012","Students and staff of the minor ‘Management in a High-tech Context’ at Delft University of Technology reported a lack of integrated learning opportunities in the programme. The minor offered separate courses on financial management, human resource management, innovation, etc., but was not successful in integrating the different courses into a meaningful whole. As a result students lacked the opportunity to coherently understand and apply the competencies taught in the programme. For that reason an integrative course was developed. The design and experiences from three editions of the course are presented in this paper.","authentic learning; management competencies; learning environment; technology-based tools (case study & management game)","en","conference paper","Societe Europeenne pour la Formation des Ingenieurs (SEFI)","","","","","","","","Technology, Policy and Management","Multi Actor Systems","","","",""
"uuid:72bd50c9-326d-44a1-bfac-1b611966f430","http://resolver.tudelft.nl/uuid:72bd50c9-326d-44a1-bfac-1b611966f430","A comparative evaluation of low-energy, passive and zero-energy houses in The Netherlands and Belgium","Mlecnik, E.; Jansen, S.; Schuetze, T.; De Vries, G.","","2011","The presented research aims to evaluate highly energy-efficient dwellings, in particular Passive Houses (PH), in Flanders and in The Netherlands, based on end-user experiences. In the introduction the definition of PH in the Benelux countries Belgium and The Netherlands is compared with the Nordic countries and certification and comfort issues are discussed. The research is based on the results of questionnaires directed to owner-occupants and inhabitants of so-called Low-Energy, Passive and Zero-Energy Houses including different types of dwellings, such as single-family houses and apartments. The satisfaction levels of inhabitants have been investigated and evaluated regarding different comfort criteria. The research results for both countries have been compared with each other. They indicate that PHs in Belgium and in The Netherlands are generally well accepted by the inhabitants and perceived as comfortable. However, the perceived comfort can vary and some deficiencies need to be addressed to achieve high levels of comfort and user satisfaction in future PH projects. Particularly, summer comfort as well as the installation quality and user friendliness of current indoor climate systems can be improved. Additionally, the development of quality assurance schemes for PHs is discussed in this paper. Based on a comparison between the Dutch and the Flemish criteria, recommendations are given on items that are currently missing in PH certification and can lead to further improvement of building processes and national policy.","passive house; low-energy house; indoor climate; energy performance; end-user experiences","en","conference paper","Finnish Association of Civil Engineers RIL, VTT Technical Research Centre of Finland","","","","","","","","OTB Research Institute for the Built Environment","OTB Reseach","","","",""
"uuid:03ab8ef6-121e-4173-8345-321da8ab20f9","http://resolver.tudelft.nl/uuid:03ab8ef6-121e-4173-8345-321da8ab20f9","Insulation Diagnosis of High Voltage Power Cables","Gulski, E.; Meijer, S.; Cichecki, P.; Smit, J.J.; Seitz, P.P.; Petzold, F.; De Vries, F.","","2007","","","en","conference paper","IEEE","","","","","","","","Electrical Engineering, Mathematics and Computer Science","","","","",""
"uuid:5313b734-80ce-477d-958a-10b59a925f86","http://resolver.tudelft.nl/uuid:5313b734-80ce-477d-958a-10b59a925f86","Alongshore topographic variability at a nourished beach","De Schipper, M.A.; De Vries, S.; Ranasinghe, R.W.M.R.J.B.; Reniers, A.; Stive, M.J.F.","","2013","The present paper examines the generation and inter-annual evolution of alongshore variability in topography measured after the implementation of a sand nourishment. The magnitude of the topographic variability is quantified using 3.5 years of monthly survey data. The emergence and temporal change in alongshore morphological variability is compared with environmental and topographic controls previously suggested as governing processes in published literature. Results show that the variability at this site is slowly evolving on a monthly timescale. Magnitude of the variability in the first period after implementation of the nourishment was similar to the values found after 3.5 years. Temporal variation in the magnitude of the alongshore topographic variability was found to be related the incoming wave power offshore. Energetic storm events during winter resulted in a rapid increase in variability, followed by a gradual decrease in alongshore variability during spring and summer.","alongshore topographic variability; sand nourishments; subtidal bar dynamics","en","conference paper","Bordeaux University","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:7efe54d7-f0b4-4664-b148-ed63e1ccab4f","http://resolver.tudelft.nl/uuid:7efe54d7-f0b4-4664-b148-ed63e1ccab4f","Russian-Dutch project ""3D cadastre modelling in Russia""","Elizarova, G.; Sapelnikoiv, S.; Vandysheva, N.; Van Oosterom, P.J.M.; De Vries, M.E.; Stoter, J.E.; Ploeger, H.D.; Spiering, B.; Outers, R.; Hoogeveen, A.; Penkov, V.","","2012","","","en","conference paper","International Federation of Surveyors (FIG)/Urban Planning, Land and Resources Commission of Shenzhen Municipality Shenzhen Urban Planning & Land Resources Research Center Wuhan University","","","","","","","","OTB Research Institute for the Built Environment","GIS Technology","","","",""
"uuid:8457edd4-3a61-4ad4-95da-6e4f998ca420","http://resolver.tudelft.nl/uuid:8457edd4-3a61-4ad4-95da-6e4f998ca420","The 3D cadastre prototype and pilot in the Russian Federation","Vandysheva, N.; Sapelnikov, S.; Van Oosterom, P.J.M.; De Vries, M.E.; Spiering, B.; Wouters, R.; Hoogeveen, A.; Penkov, V.","","2012","This paper presents the developed prototype and the planned pilot of the on-going project on 3D cadastre modelling in the Russian Federation. The aim of this project is to provide guidance in the development of 3D Cadastral registration and to create favourable legal and institutional conditions for the introduction of a 3D cadastre. The Russian Federation has a strong drive towards a 3D cadastre for better registration of complex buildings, or other types of constructions, and subsurface networks (e.g., cables and pipelines). After the recent completion of the design of a 3D Cadastral model, the project is currently in the phase of testing this design via a pilot based on the developed prototype system. The test data, including selected 3D cases, is from Nizhny Novgorod (about 400 km east of Moscow), which has been selected as pilot region in this project. The selected 3D cases are representative 3D cadastral objects related to buildings (units) and pipelines. The initial prototype focuses on the presentation of 3D information of cadastral objects. Therefore a web browser based solution has been developed, in which the 3D visualization and interaction is implemented with the BS Contact plug-in from Bitmanagement (www.bitmanagement.com). This includes functionality to: display and interact with the various pilot objects in 3D (rotate, zoom, select, etc.), connection of 3D actions to existing 2D cadastral portal (maps.rosreestr.ru/Portal), display administrative data (show id, cadastral number), alphanumerical selection on multiple attributes (owner name, id of cadastral object, address, etc.), ability to configure ‘hide / show’ privacy data (depending on user), show / hide layers (including reference data such as 2D cadastral map, topographic map, or areal photograph), offer link to photograph of selected 3D building, interface in Russian language, etc. The pilot will further be used to evaluate the possible future workflow around 3D parcels in Russia: accepting newly registered 3D parcels, and correctly storing them into the database for possible future access. The experiences from the pilot will be used to prepare the guidelines for the future 3D registration: both the legal aspects and the technical workflow.","3D cadastre; standards; cadastral modelling; prototype; pilot","en","conference paper","International Federation of Surveyors (FIG)","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:d4984156-667e-433b-b5f1-00fe3b3ced8e","http://resolver.tudelft.nl/uuid:d4984156-667e-433b-b5f1-00fe3b3ced8e","'INSPIRE compliant web services': An assessment of the quality and feasibility of the INSPIRE guidelines","Sudra, P.W.; De Vries, M.E.; Van Oosterom, P.J.M.","","2010","The INSPIRE infrastructure and its implementation could be considered as mainly a legal and practical implementation issue. However it also tends to be a topic dealt with on a scientific research and educational level, because of its highly innovative character. This paper presents the findings of a research project on ‘INSPIRE compliant web services’. Main objective of the project is to assess the quality and feasibility (in the sense of completeness, consistency and ease-of-implementation) of the guidelines for INSPIRE Network Services. Part of this assessment is also the question: how can INSPIRE compliance be tested and measured?","","en","conference paper","European Commission","","","","","","","","OTB Research Institute for the Built Environment","OTB Onderzoek","","","",""
"uuid:b0f7839b-5e55-444b-b758-826f609f05b2","http://resolver.tudelft.nl/uuid:b0f7839b-5e55-444b-b758-826f609f05b2","House Price, House Quality and Economic Growth","De Vries, P.; Boelhouwer, P.J.","","2010","The literature on housing markets suggest that periods of economic growth are characterised by a demand for better housing quality and increasing prices. The basic principles of the theory are that the short-run price fluctuations occur due to market imperfection, while over the long term, causality with such fundamentals as income will recover. Affordability of the higher quality then becomes a problem in the subsequent period of economic stagnation. This article seeks to identify the mechanism in which quality and affordability are weighed against each other, showing that the price-quality relationship changes with the economic growth. We do this against the background of the Dutch housing market. Our analysis shows that in a high-growth economy households search for better quality of property and are prepared to pay for it. In a stagnant economy the demand for quality takes second place to the demand for affordable homes. It also appears that appreciation of quality varies in particular between the low-growth phase and the medium-growth phase. The price-quality relationship barely varies between the medium-growth and high-growth phases.","house prices; house quality; housing market; economic growth; The Netherlands","en","conference paper","Università Bocconi","","","","","","","","OTB Research Institute","OTB onderzoek","","","",""
"uuid:9bcad333-c921-4518-a2e7-19ffe6175621","http://resolver.tudelft.nl/uuid:9bcad333-c921-4518-a2e7-19ffe6175621","Impacts of the introduction of CO2 price floors in a two-country electricity maket model","Richstein, J.C.; Chappin, E.J.L.; De Vries, L.J.","","2012","The recent low of CO2 prices in the European Union Emission Trading Scheme have triggered a renewed discussion, whether the introduction of a CO2 price oor would lower investor uncertainty and thus trigger more investment in low-carbon electricity generation. We compare the effects of a CO2 price floor on the dynamic investment pathway of an interlinked two country electricity system with a common CO2 emissiontrading scheme using a long-term focused agent-based model. Four cases are distinguished: No CO2 price floor, a CO2 price floor unilaterally levied as a complimentary variable tax on production in only one country and a common CO2 price floor in two countries. Preliminary results indicate that while a national price floor reduces price variance in the introducing country, the overall CO2 price variance increases. A common CO2 price oor was found to decrease overall price variance.","CO2 Policy, EU-ETS, CO2 price floor, ABM","en","conference paper","IAEE","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:3a4631e0-4ae2-4001-9cd5-8225c8316ed1","http://resolver.tudelft.nl/uuid:3a4631e0-4ae2-4001-9cd5-8225c8316ed1","European security of electricity supply policy in the context of increasing volumes of intermittent generation","De Vries, L.J.; Ramirez Ospina, J.R.","","2012","In response to plans in France and the UK to implement a capacity mechanism and the recent implementation of a small strategic reserve in Germany, we address the question of the cross-border effects of national implementation of a capacity mechanism in Europe’s interconnected markets. We model some of the effects that may arise when different countries implement different types of capacity mechanisms. We draw conclusions with respect to generation adequacy policy in Europe. Capacity markets appear to be more effective than strategic reserve in attracting investment and securing supply in the long run, but may discourage investment in neighboring countries. A strategic reserve is easier to implement and does not have this negative externality, but its dynamic effectiveness is less certain and its effect may leak away across the border. The negative externality of a capacity mechanism may put pressure on neighboring countries to also implement a capacity mechanism. However, the proliferation of different types of capacity mechanisms – every category of capacity mechanism can be implemented in a myriad of different ways – creates a significant risk trade between countries will be increasingly distorted. Considering also the regulatory uncertainty that is brought about by this process and the risk of regulatory failure with implementing the more sophisticated capacity mechanisms such as capacity markets and reliability options, the positive effect on investment is not a given.","electricity, generation, capacity mechanism, security of supply","en","conference paper","IAEE","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:3d2037f0-001b-4426-8c0e-463df9dd78ed","http://resolver.tudelft.nl/uuid:3d2037f0-001b-4426-8c0e-463df9dd78ed","The sand engine: A solution for vulnerable deltas in the 21st century?","Stive, M.J.F.; De Schipper, M.A.; Luijendijk, A.P.; Ranasinghe, R.W.M.R.J.B.; Van Thiel De Vries, J.S.M.; Aarninkhof, S.; Van Gelder-Maas, C.; De Vries, S.; Henriquez, M.; Marx, S.","","2013","The Netherlands’ strategy to combat coastal erosion since 1990 has been through nourishment, initially as beach nourishments but more and more as shoreface nourishments. In the light of sea level rise projections the yearly nourishment magnitudes continue to increase. In view of this an innovative soft engineering intervention, comprising an unprecedented 21 Mm3 sand nourishment known as the Sand Engine, has recently been implemented in the Netherlands. The Sand Engine nourishment is a pilot project to test the effectiveness and efficiency of a local meganourishment as a measure to account for the anticipated increased coastal recession in this century. The proposed concept, a single mega-nourishment, once every 20 years, is expected to be more efficient and effective in the long term than traditional beach and shoreface nourishments, presently being used at the Dutch coast with typically a three to five year interval. While the judgement is still out on this globally unique intervention, if proven successful, it may well become a generic solution for combating sea level rise driven coastal recession on open and vulnerable coasts.","nourishment; coastal erosion; sea level rise; storm erosion; shoreface processes; flooding; sand engine","en","conference paper","Bordeaux University","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:e49d8911-72c2-4f6c-a8b4-7009954134c0","http://resolver.tudelft.nl/uuid:e49d8911-72c2-4f6c-a8b4-7009954134c0","Tidal dynamics in the sand motor lagoon","De Vries, S.; Radermacher, M.; De Schipper, M.A.; Stive, M.J.F.","","2015","The Sand Motor is a mega-nourishment characterized by a very large sand volume of around 20 million m3 placed along the Dutch coast. The Sand Motor is a pilot project to evaluate the performance of an alternative nourishment strategy with respect to different functions of the coastal system. Within the scope of the coastal functions, the hook-shaped design of the initial morphology of the Sand Motor involves a sheltered (man-made) lagoon. The morphology of the Sand Motor and particularly the area around the lagoon entrance has changed over time since the construction in 2011. As a result of the changing inlet and lagoon morphology, the tidal conditions inside the basin have changed. We have set up a detailed numerical model to simulate the hydrodynamic conditions inside the Sand Motor’s tidal lagoon as a function of the water level at sea and the measured local morphology of the Sand Motor. It is found that the tidal response inside the lagoon changes significantly as a function of the changing morphology. The analysis reveals a prediction of the temporal development of the tidal range and mean water level inside the lagoon, which can be used to predict the closure of the Sand Motor lagoon.","sand motor; Delft3D; lagoon; tide","en","conference paper","IAHR","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:3c60fa7c-8e42-4896-a6f2-416d8e3eab1c","http://resolver.tudelft.nl/uuid:3c60fa7c-8e42-4896-a6f2-416d8e3eab1c","Financiering en toegankelijkheid van de koopsector: Verslag (Sessie 3)","De Vries, P.; Boelhouwer, P.J.","","2015","","","nl","conference paper","OTB-Congresbureau","","","","","","","","OTB Research Institute for the Built Environment","OTB","","","",""
"uuid:d3990bc7-1d6c-4dd1-8989-a47f1e8443f1","http://resolver.tudelft.nl/uuid:d3990bc7-1d6c-4dd1-8989-a47f1e8443f1","Development of an intuitive 3D sketching tool","De Vries, B.; Jessurun, J.; Engeli, M.","","2000","","","en","conference paper","","","","","","","","","Architecture","","","","",""
"uuid:cdf83719-5f36-42c8-afbe-6a4be4e3f19e","http://resolver.tudelft.nl/uuid:cdf83719-5f36-42c8-afbe-6a4be4e3f19e","A new conceptual model for aeolian transport rates on beaches","De Vries, S.; Stive, M.J.F.; Van Rijn, L.; Ranasinghe, R.","","2012","In this paper a new conceptual model for aeolian sediment transport rates is presented. Traditional sediment transport formulations have known limitations when applied to coastal beach situations. A linear model for sediment transport rates with respect to wind speed is proposed and supported by both data and numerical model simulations. The presented model does not solve complex wind fields and is therefore very easily applicable. Physical principles such as the presence of a threshold velocity and interaction with the bed surface are yet to be implemented before the model can be used for predictive purposes.","aeolian transport; field measurements; model concept","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:4a76eb17-2733-4075-8098-0c502ff1ec12","http://resolver.tudelft.nl/uuid:4a76eb17-2733-4075-8098-0c502ff1ec12","Measured Gradients in Alongshore Sediment Transport Along the Dutch Coast","De Vries, S.; De Schipper, M.A.; Stive, M.J.F.","","2014","In this paper it is aimed to quantify bulk (surf-zone integrated) alongshore sediment transport using morphological data collected along the Dutch coast. The collected morphological data covers a domain of 18 km alongshore including the beach, the foreshore and the intertidal zone in the cross shore. The measurement domain contains the 20 million m 3 Sand Engine mega-nourishment. Detailed volume changes in cross shore profiles are calculated using the collected data. Based on the calculated volume changes in the cross shore profiles, gradients in alongshore transport can be derived. In the scope of this paper we have derived alongshore transport gradients considering three periods; 1) a period of one year; 2) a period of two months with mild wave conditions; 3) a period of four months with stormy weather. Changes in the derived gradients in sediment transport for the selected periods are significant depending on alongshore location and temporally varying forcing conditions. The potential of the data-set is only explored to a limited extent so far. Additional parameters to be analyzed in the future are coastline orientation and cross shore profile gradients.","alongshore sediment transport; sand engine; topographic measurement; Dutch coast; zandmotor; ICCE 2014","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:cd4ae843-7ed1-4865-a234-3d35e1b006ba","http://resolver.tudelft.nl/uuid:cd4ae843-7ed1-4865-a234-3d35e1b006ba","Covalently, Non-Covalently and Non Functionalized Networked Graphitic Structures as robust catalyst support in PEM electrodes (abstract)","Negro, E.; De Vries, M.; Latsuzbaia, R.; Koper, G.J.M.","","2013","","","en","conference paper","The Electrochemical Society","","","","","","","","Applied Sciences","ChemE/Chemical Engineering","","","",""
"uuid:42a2755b-ff2e-422e-a4fb-55054672a883","http://resolver.tudelft.nl/uuid:42a2755b-ff2e-422e-a4fb-55054672a883","Measuring and modeling coastal dune development in the Netherlands","De Groot, A.V.; De Vries, S.; Keijsers, J.G.S.; Riksen, M.J.P.M.; Ye, Q.; Poortinga, A.; Arens, S.M.; Bochev-Van der Burgh, L.M.; Wijnberg, K.M.; Schretlen, J.L.; Van Thiel De Vries, J.S.M.","","2012","","","en","conference paper","University of Twente","","","","","","","","Civil Engineering and Geosciences","Structural Engineering","","","",""
"uuid:66fd16dd-2761-4ccd-96f0-d660ba11c852","http://resolver.tudelft.nl/uuid:66fd16dd-2761-4ccd-96f0-d660ba11c852","Sustainable transfer of coastal engineering knowledge at post graduate level","Verhagen, H.J.; De Vries, W.S.","","1999","Practical problems in the transfer of knowledge and skills to coastal engineers in training, with focus on the training of coastal engineers from developing countries and other countries in transition. The difference between the training of scientists and engineers.","Coastal Engineering; capacity building; training; education","en","conference paper","Copedec","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:48d8666d-f213-43e2-b5be-0232b474ee68","http://resolver.tudelft.nl/uuid:48d8666d-f213-43e2-b5be-0232b474ee68","Markets for Direct Current Distribution Systems: Towards Energy-based vs Flex-based Designs","Piao, L. (TU Delft Algorithmics; TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie); de Weerdt, M.M. (TU Delft Algorithmics); Yorke-Smith, N. (TU Delft Algorithmics; Olayan School of Business, American University of Beirut)","","2019","Direct Current Distribution System (DCDS), a promising alternative to existing AC systems, connect customers to DC energy sources without AC/DC conversion. The unique features of DC, including the power-voltage coupling effect, impose different requirements to DCDS operation compared to AC. Addressing a liberalized energy market, this paper investigates the significant impact of market design on DCDS operation with an empirical analysis of electric vehicle charging. With an empirical analysis on EV charging, we investigate the level of efficiency a centralized market may theoretically reach, then compare it with a market based on prosumers’ local decision.","direct current; distribution system; electric vehicle; electricity market design; flexibility","en","conference paper","IEEE","","","","","","","","","","Algorithmics","","",""
"uuid:bfcfe056-0eb5-488a-b72c-0aeb95e56fd6","http://resolver.tudelft.nl/uuid:bfcfe056-0eb5-488a-b72c-0aeb95e56fd6","The impact of weather and of batteries on the investment risk for backup gas power plants in a largely renewable energy system","Pelka, Sabine (Fraunhofer Institute for Systems and Innovation Research ISI); De Vries, Laurens (TU Delft Energie and Industrie); Deissenroth, Marc (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR))","","2019","With an increasing wind and photovoltaic share, the German generation mix becomes more weather-dependent. Backup technologies can help to bridge scarcity moments. These rare moments with high prices are the main events for their cost recovery. However, the uncertain revenue flow combined with long payback periods leads to high investment risks and possibly insufficient investment.A high level of needed backup capacity to cover the load does not necessarily go along with a high level of requested backup energy. Both indicators depend on the renewable output and the availability of alternative flexibility sources. We calculate them for two contrasting weather years and three levels of battery capacity by the agent-based-model AMIRIS. As a result, the demonstrated volatile backup energy request in combination with the same level of requested backup capacity for every scenario supports the idea of an alternative remuneration for the provision of capacity next to the energy-only-market.","backup capacity; batteries; flexibility; Security of supply; weather","en","conference paper","IEEE","","","","","","","","","","Energie and Industrie","","",""
"uuid:62232bab-6403-4990-aa22-91845bbc05d9","http://resolver.tudelft.nl/uuid:62232bab-6403-4990-aa22-91845bbc05d9","Auctions for Congestion Management in Distribution Grids","Philipsen, R.M. (TU Delft Algorithmics); de Weerdt, M.M. (TU Delft Algorithmics); De Vries, Laurens (TU Delft Energie and Industrie)","","2016","Large controllable loads, such as electric vehicles, are increasingly penetrating electricity distribution feeders. To avoid local congestion, their consumption behaviour must be steered, for which a real-time price propagated down from the transmission system does not suffice, as it does not reflect local grid conditions. To efficiently steer the charging of EVs by multiple self-interested parties, we propose an auction framework which accounts for local grid conditions, the limited flexibility of EVs, and the uncertainty inherent to small-scale networks. We formulate the EV charging problem as a job scheduling problem for self-interested aggregators, and auction network capacity
for discrete time slots using sequentially-cleared auctions, which run in parallel. We simulate this auction on a local network using realistic data for EV driving behaviour and network capacity, showing this method leads to feasible allocations which are fairer in case one party is weaker than the other due to size or information asymmetry.","Uncertainty; Cost accounting; Automobiles; Resource management; Pricing; Electric vehicles; Production","en","conference paper","IEEE Society","","","","","Accepted Author Manuscript","","","","","Algorithmics","","",""
"uuid:20a2fc4c-8cff-4834-9985-16fc98a178d3","http://resolver.tudelft.nl/uuid:20a2fc4c-8cff-4834-9985-16fc98a178d3","A Modeling Approach To Analyze The Implementation Of Capacity Markets In Germany","Bhagwat, P.C. (TU Delft Energie and Industrie); Iychettira, K.K. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie)","","2013","","","en","conference paper","","","","","","","","","","","Energie and Industrie","","",""
"uuid:e278bc9d-784c-46ec-a2cc-672f08e5f1b8","http://resolver.tudelft.nl/uuid:e278bc9d-784c-46ec-a2cc-672f08e5f1b8","Electricity market design requirements for DC distribution systems","Piao, L. (TU Delft Algorithmics); de Weerdt, M.M. (TU Delft Algorithmics); De Vries, Laurens (TU Delft Energie and Industrie)","","2017","DC distribution systems (DCDS) connect local generators and loads directly. By avoiding unnecessary losses in AC-DC conversion, DCDS offers higher energy efficiency. Since different parties in a DCDS may have conflicting goals, matching between power supply and demand should be done with carefully designed allocation rules and monetary transfers, such that no one prefers to act otherwise than the outcome of the allocation. This paper reveals DCDS' unique operational requirements and indicates the challenges and opportunities they pose to market design. A design framework is introduced into DCDS electricity market, incl. tradable services, design goals, market participants, design options and performance criteria. We review the existing market models for AC and DC distribution systems and point out the direction for future work.","electricity market; market design; DC distribution system; operational requirements; tradable services","en","conference paper","IEEE","","","","","","","","","","Algorithmics","","",""
"uuid:ac6df244-1aa1-4210-a7a6-5d23a5057387","http://resolver.tudelft.nl/uuid:ac6df244-1aa1-4210-a7a6-5d23a5057387","Electricity Market for Direct Current Distribution Systems: Exploring the Design Space","Piao, L. (TU Delft Algorithmics; TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie); de Weerdt, M.M. (TU Delft Algorithmics); Yorke-Smith, N. (TU Delft Algorithmics; Olayan School of Business, American University of Beirut)","","2018","Direct current distribution systems (DCDS), which connect local prosumers directly to community grids without AC/DC conversions, are a promising alternative to AC systems. While regulations call for market-based operation, existing markets for AC systems do not meet DC requirements and cannot be applied to a DCDS. This paper develops a design framework for local electricity markets and with it explores possible DCDS market designs. We review the technical requirements and desired properties for DCDS operation, enumerate its market design goals, then identify the design variables influencing the short-term market efficiency. This paper is our first step towards a systematic DCDS market design, and it supports our future work on quantitative analysis of the design choices.","electricity market design; direct current; distribution system; design space; flexibility","en","conference paper","IEEE","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2019-03-24","","","Algorithmics","","",""
"uuid:e2bac5cd-4563-40db-85ed-3f16d2f7b8d3","http://resolver.tudelft.nl/uuid:e2bac5cd-4563-40db-85ed-3f16d2f7b8d3","A New Market Design For Day-ahead Markets with Power-Based Scheduling","Philipsen, R.M. (TU Delft Algorithmics); Morales-Espana, G. (TU Delft Algorithmics); de Weerdt, M.M. (TU Delft Algorithmics); De Vries, Laurens (TU Delft Energie and Industrie)","Rossetto, Nicolò (editor)","2017","","","en","conference paper","European University Institute","","","","","","","","","","Algorithmics","","",""
"uuid:1753f5b9-c1a1-4a80-a927-4f10b96216b0","http://resolver.tudelft.nl/uuid:1753f5b9-c1a1-4a80-a927-4f10b96216b0","A (not so) independent aggregator in the balancing market theory, policy and reality check","Poplavskaya, Ksenia (AIT Austrian Institute of Technology); De Vries, Laurens (TU Delft Energie and Industrie)","","2018","The aggregator has been touted as the key enabler of active engagement of distributed energy resources and promises to contribute to greater economic efficiency in the European balancing markets by providing cheap sources of flexibility. This paper presents an empirical analysis of how aggregators organize themselves in relation to other market participants given the rules of the balancing market and the impact thereof on their participation. We reviewed how market design influences their choices by comparing three countries, Austria, Germany and the Netherlands, in the light of the goals set by the EU. Despite the EU policy drive to integrate aggregators, the participation of independent aggregators in the balancing market is so far limited. Relaxing the agreement requirements, allowing pool-based prequalification and standardizing compensation mechanisms unlocks more possible business models for the aggregator and may help create synergies among aggregators, suppliers and balance responsible parties.","Aggregator; Balance responsible party; Balancing market; Energy policy; Market design","en","conference paper","IEEE","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2019-03-24","","","Energie and Industrie","","",""
"uuid:28e1662e-6246-47ac-bcf9-20ab45d8d080","http://resolver.tudelft.nl/uuid:28e1662e-6246-47ac-bcf9-20ab45d8d080","Redispatch and balancing: Same but different. Links, conflicts and solutions.","Poplavskaya, K. (TU Delft Energie and Industrie; AIT Austrian Institute of Technology); Joos, Marine (Hespul, Lyon); Krakowski, Vincent (Hespul, Lyon); Knorr, Kaspar (Fraunhofer-Institut für Energiewirtschaft und Energiesystemtechnik, Kassel); De Vries, Laurens (TU Delft Energie and Industrie)","","2020","The authors provide a critical analysis of existing approaches to balancing and congestion management (specifically redispatch) and their effects on the incentives for service providers. This issue is particularly important in the view of the harmonization of ancillary service procurement in Europe, introduction of cross-border balancing markets and cooperation on congestion management. There is no universally established procurement mechanism for either of the two services. Based on case studies of Germany, France and the Netherlands and the introduction of an EU balancing energy platforms, we derive three stylized interaction models and discuss their comparative conflicts, risks and performance. We argue that market-based redispatch procurement can both increase allocative efficiency and resource availability as long as structural congestion is addressed first. Timeframe of procurement and remuneration mechanisms are other crucial factors affecting market efficiency. Combining redispatch with wholesale markets might yield a further improvement while minimizing conflicts between redispatch and balancing.","ancillary services; balancing; incentives; market design; redispatch","en","conference paper","IEEE","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2021-04-13","","","Energie and Industrie","","",""
"uuid:bcd8b744-d010-4d4d-87b2-480fdce8728e","http://resolver.tudelft.nl/uuid:bcd8b744-d010-4d4d-87b2-480fdce8728e","Metropolis II: Investigating the Future Shape of Air Traffic Control in Highly Dense Urban Airspace","Patrinopoulou, N. (University of Patras); Daramouskas, I. (University of Patras); Lappas, V. (University of Patras); Morfin Veytia, A. (TU Delft Control & Simulation); Badea, C. (TU Delft Control & Simulation); Ellerbroek, Joost (TU Delft Control & Simulation); Hoekstra, J.M. (TU Delft Control & Simulation); De Vries, V. (Royal Netherlands Aerospace Centre NLR); Van Ham, J. (Royal Netherlands Aerospace Centre NLR)","","2022","Metropolis II aims to provide insights in what is needed to enable high-density urban air operations. It does this by investigating the foundation for U-space U3/U4 services. The final goal is to provide a unified approach for strategic deconfliction, tactical deconfliction, and dynamic capacity management. Highly-dense operations in constrained urban airspace will likely require a degree of complexity that does not exist in modern-day air traffic management. The expected high traffic demand will require a shared use of the airspace instead of assigning exclusive use of blocks of the airspace to some flights. A unified approach for traffic management is needed because at high-densities, airspace design, flight planning, and separation management become increasingly interdependent. Metropolis II builds upon the results of the first Metropolis project. Three concepts with a varying degree of centralisation will be compared using simulations. (1) The centralised concept will take a global approach for separation management. (2) The decentralised concept aims to give the individual agents separation responsibility. (3) The hybrid concept tries to combine a centralised strategic planning agent with a robust tactical separation strategy.","BlueSky ATC Simulator; Degree of Centralisation; Flight planning; Separation management; U-Space; Unmanned Traffic Management (UTM); Urban Airspace","en","conference paper","Institute of Electrical and Electronics Engineers (IEEE)","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2023-07-01","","","Control & Simulation","","",""
"uuid:56a3a090-9227-478a-b15b-3d648dca8826","http://resolver.tudelft.nl/uuid:56a3a090-9227-478a-b15b-3d648dca8826","Imperfect Unit Commitment Decisions with Perfect Information: a Real-time Comparison of Energy versus Power","Philipsen, R.M. (TU Delft Algorithmics); Morales-Espana, G. (TU Delft DC systems, Energy conversion & Storage); de Weerdt, M.M. (TU Delft Algorithmics); De Vries, Laurens (TU Delft Energie and Industrie)","","2016","In order to cope with fluctuations and uncertainty, power systems rely on contracted reserves. The day-ahead Unit Commitment (UC) is the short-term planning process which is commonly used to schedule these resources at minimum cost, while operating the system and units within secure technical limits. This paper shows through the evaluation of deterministic cases that conventional energy-based UC formulations lead to inefficient use of reserves in real-time operation to deal with completely known deterministic events. These inefficient decisions are inherent to the assumptions underlying the energy-based formulation, and the misaligned incentives between markets and real-time operation. Economic efficiency and system security can be improved by adopting a UC formulation which explicitly considers the instantaneous power trajectories of generators.","","en","conference paper","IEEE","","","","","","","","","","DC systems, Energy conversion & Storage","","",""
"uuid:73bf21ae-164d-45b9-ba2f-cf46dcdb3728","http://resolver.tudelft.nl/uuid:73bf21ae-164d-45b9-ba2f-cf46dcdb3728","Capacity Subscription Tariffs for Electricity Distribution Networks: Design Choices and Congestion Management","Hennig, R.J. (TU Delft Energie and Industrie); Jonker, Martijn (Alliander N.V.); Tindemans, Simon H. (TU Delft Intelligent Electrical Power Grids); De Vries, Laurens (TU Delft Energie and Industrie)","","2020","Residential distribution networks in Europe are undergoing rapid changes. As high-power flexible loads, such as electric vehicle (EV) chargers, become more prevalent, the risk of network congestion increases. This is exacerbated by tariff structures which do not give incentives to limit simultaneous power consumption. Network charges in this case may not reflect the true costs of usage, as network costs are driven mainly by simultaneous load peaks.We present a systematic assessment of a new class of tariffs that is currently gaining attention in the Netherlands: capacity subscription models. We argue that this tariff structure is more cost-reflective and fair than the current fixed network fee and show how it helps to prevent transformer overloading in a simple simulation model of a neighborhood of 100 households constrained by a LV transformer, where a varying number of EVs are added.","Demand Side Management; Electric Vehicles; Electricity Distribution Tariffs; Power Distribution; Smart Grids","en","conference paper","","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2021-04-13","","","Energie and Industrie","","",""
"uuid:a4bf6019-7064-448e-b199-fbc109fd06da","http://resolver.tudelft.nl/uuid:a4bf6019-7064-448e-b199-fbc109fd06da","Market Failures in Local Flexibility Market Proposals for Distribution Network Congestion Management","Hennig, R.J. (TU Delft Energie and Industrie); Tindemans, Simon H. (TU Delft Intelligent Electrical Power Grids); De Vries, Laurens (TU Delft Energie and Industrie)","","2022","The steady uptake of PV cells and high-power flexible loads such as electric vehicles (EVs) and heat pumps can lead to localized network congestion, if their power consumption or feed-in is not controlled well. One potential way that has been proposed to manage this congestion, are so-called Local Flexibility Markets. It is often argued, that these proposals are theoretically efficient, as they are market-based. However, some of these proposals may suffer from design flaws that allow market participants to obtain undue profits at the expense of the network operator. In this contribution, we discuss which kinds of market failures can occur based on theoretical reasoning and demonstrate them in a toy model. Based on this, we argue for a more careful consideration of congestion management options.","","en","conference paper","IEEE","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2023-03-20","","","Energie and Industrie","","",""
"uuid:868cdc34-8803-4b46-8996-967c3b3c80c6","http://resolver.tudelft.nl/uuid:868cdc34-8803-4b46-8996-967c3b3c80c6","Self-consumption rises due to energy crises? An evaluation of prosumers' consumption behavior in 2022","Pelka, S. (Fraunhofer Institute for Systems and Innovation Research ISI); Conradie, Peter (Universiteit Gent; IMEC-Solliance); De Vries, Laurens (TU Delft Energie and Industrie); Anatolitis, Vasilios (Fraunhofer Institute for Systems and Innovation Research ISI); Martens, Emma (Universiteit Gent); Chappin, E.J.L. (TU Delft Energie and Industrie); Karaliopoulos, Merkouris (Athens University of Economics and Business); Anagnostopoulos, Filippos (Institute for European Energy and Climate Policy); Preuß, Sabine (Fraunhofer Institute for Systems and Innovation Research ISI)","","2023","Prosumers with photovoltaic systems can reduce their electricity expenses by increasing their consumption of self-generated electricity. This makes them more resilient to price shocks, like the 2022 European energy crisis. We evaluate how prosumers adapt their consumption behavior in response to such political uncertainty and increasing electricity prices. The collected survey and smart meter data allow us to evaluate the perceived self-reported and measured impact on self-consumption.Saving intentions due to the energy crisis are more clearly displayed by the survey than by the measured self-consumption. While solar radiation predominantly explains self-consumption changes, Google searches on electricity-related topics have limited explanatory power. However, considering time lags and the interaction with solar radiation leads to more nuanced insights on the effect of Google searches. Depending on the level of solar radiation, the effect of Google searches ranges from decreasing the daily self-consumption by 26.45 Wh to increasing it by 69.45 Wh.","Energy Crisis; Energy Savings; Google Trends; Prosumer; Smart Meter Data","en","conference paper","IEEE","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2024-01-03","","","Energie and Industrie","","",""
"uuid:8a29f270-dc29-490e-94df-99dc472b82cf","http://resolver.tudelft.nl/uuid:8a29f270-dc29-490e-94df-99dc472b82cf","On the asymptotic behavior of discrete event systems","De Vries, R.E.","Older, G.J. (promotor)","1992","","","en","doctoral thesis","","","","","","","","","Electrical Engineering, Mathematics and Computer Science","","","","",""
"uuid:d84bece3-f71b-49a3-9131-b37139b2e5bb","http://resolver.tudelft.nl/uuid:d84bece3-f71b-49a3-9131-b37139b2e5bb","Propagation of transient acoustic waves in porous media","De Vries, S.M.","De Hoop, A.T. (promotor)","1989","","","en","doctoral thesis","","","","","","","","","Electrical Engineering, Mathematics and Computer Science","","","","",""
"uuid:a13d22d3-e37e-4311-a4e6-f01d08e2f939","http://resolver.tudelft.nl/uuid:a13d22d3-e37e-4311-a4e6-f01d08e2f939","On the elastic and optical properties of cellulose fibres","De Vries, H.","Druyvesteyn, M.J. (promotor)","1953","","","en","doctoral thesis","","","","","","","","","Applied Sciences","","","","",""
"uuid:8a017cf5-53f8-475f-bf92-e57569484fba","http://resolver.tudelft.nl/uuid:8a017cf5-53f8-475f-bf92-e57569484fba","Reacties van aliphatische halogeniden met oplossingen van alkalimetalen in vloeibare ammoniak","De Vries, K.S.","Verkade, P.E. (promotor); Wepster, B.M. (promotor)","1961","","","nl","doctoral thesis","Waltman","","","","","","","","Applied Sciences","","","","",""
"uuid:23c60010-dabb-416e-a00e-9bba78ecb987","http://resolver.tudelft.nl/uuid:23c60010-dabb-416e-a00e-9bba78ecb987","Weldability of an aluminium matrix composite","De Vries, H.W.","Den Ouden, G. (promotor)","1998","","","en","doctoral thesis","","","","","","","","","Applied Sciences","","","","",""
"uuid:126e09db-29cb-46d8-9302-98bb85793843","http://resolver.tudelft.nl/uuid:126e09db-29cb-46d8-9302-98bb85793843","Securing the public interest in electricity generation markets. The myths of the invisible hand and the copper plate","De Vries, L.J.","Weijnen, M.P.C. (promotor)","2004","Two aspects of investment in generation capacity in liberalized electricity markets are investigated: the question of whether investment will be sufficient to meet society's goals for the reliability of electricity supply (generation adequacy) and the question of how to coordinate investment in electricity generation capacity in a competitive market while bound by the physical requirements and limitations of the electricity networks. The study focuses on the situation in European electricity markets. A number of factors discourage generating companies from investing in a level of generation capacity that is optimal for society as a whole. Due to the limited possibilities for the storage of electricity and the low price-elasticity of demand, electricity prices are highly volatile. This, in addition to the lack of historical trend data (due to the short history of liberalized electricity markets), insufficient transparency and high capital costs, causes investment risk to be high. Investment risk is increased by several sources of regulatory uncertainty. Given these circumstances, it is rational for investors to be cautious. A number of policy options for improving investment incentives and for stabilizing the volume of generation capacity, called capacity mechanisms, are described and analyzed. A policy framework is introduced for evaluating them and deciding on the best policy options for different circumstances. With respect to the issue of coordinating investment in electricity generation capacity with the networks, the consequences of the choice for fixed transmission tariffs in most European countries were investigated. While fixed transmission tariffs are intended to make the market simple and transparent, paradoxically they create the need for several additional measures to compensate for their external effects. Among these, the implementation of a congestion management method ranks among the most necessary measures. The options for congestion management, given the choice for fixed transmission tariffs, are analyzed and compared.","investment; generation; adequacy; security of supply; reliability","en","doctoral thesis","","","","","","","","","Technology, Policy and Management","","","","",""
"uuid:57c33fa8-a663-47cf-a63b-dcef16429edc","http://resolver.tudelft.nl/uuid:57c33fa8-a663-47cf-a63b-dcef16429edc","Measuring and explaining house price developments","De Vries, P.","Boelhouwer, P.J. (promotor)","2010","This study discusses ways of measuring and explaining the development of house prices. The goal of the research underpinning this dissertation was to develop a methodological framework for studying these developments. This framework relates, first, to correcting for changes in the composition of dwellings and, second, to the fundamentals of the price development. Using the weighted repeat sales method and sale price appraisal ratio (SPAR) method house price indexes were developed for the Netherlands. Both the Dutch land registry office and Statistics Netherlands publish the SPAR based house price index monthly. To explain and predict changes in prices a house price model is presented. As suggested in literature on western housing markets, the Dutch house price developments can be explained by demand-oriented short-run term variables and a long-run term variable. Using the house price model, this work identifies the fundamental factors in the development of house prices, a long-run equilibrium between interest payments and income, and the weak relationship on an aggregated level between house prices and newly built dwellings.","house price; house price index; repeat sales method; spar method; housing market; fiscal treatment; housing supply","en","doctoral thesis","IOS Press","","","","","","","2010-11-03","OTB Research Institute","Housing Studies","","","",""
"uuid:c52dc04c-073c-4cc9-bc5a-8a4595e45326","http://resolver.tudelft.nl/uuid:c52dc04c-073c-4cc9-bc5a-8a4595e45326","Estimation of the mechanical loading of the shoulder joint in daily conditions","De Vries, W.H.K.","Van der Helm, F.C.T. (promotor); Veeger, H.E.J. (promotor)","2015","The goal of this thesis is to assemble a method to estimate shoulder joint reaction forces, in daily conditions, based on long term collection of ambulatory measurable variables, to obtain the desired long term mechanical load profile of the shoulder. Chapter 2 examines, and discusses one of the general assumptions used in IMMS is: the homogeneousness of the earth magnetic field. Chapter 3 describes a method and its accuracy in obtaining anatomically interpretable coordinate systems for the segments of the upper extremity using only IMMS, under daily conditions. Chapter 4 describes an experiment in which the NN method is used to predict input for a musculoskeletal model, to obtain ambulatory joint loading in more detail. Chapter 5 explores the direct prediction of joint reaction forces at the glenohumeral head. Several factors which might influence the predictive power of neural networks are examined. In Chapter 6 the method is discussed on its strengths and weaknesses, and the feasibility for obtaining a detailed joint load profile under daily conditions. This chapter ends with future directions to improve the method or tailor it to more specific research questions.","Shoulder Joint Reaction Force; Ambulatory; Neural Networks; IMMS (Inertial Magnetic Measurement Systems)","en","doctoral thesis","","","","","","","","","Mechanical, Maritime and Materials Engineering","BioMechanical Engineering","","","",""
"uuid:f457a18f-65ac-47e0-aa28-ce8586a2f084","http://resolver.tudelft.nl/uuid:f457a18f-65ac-47e0-aa28-ce8586a2f084","Thermodynamic and economic principles and the assessment of bioenergy + Book of Surveys","De Vries, S.S.","De Swaan Arons, J. (promotor); De Graauw, J. (promotor)","1999","","","en","doctoral thesis","","","","","","","","","Applied Sciences","","","","",""
"uuid:c2641211-ecfe-491e-9ee9-5f2cbb5ba8b8","http://resolver.tudelft.nl/uuid:c2641211-ecfe-491e-9ee9-5f2cbb5ba8b8","Positron lifetime technique with applications in materials science","De Vries, J.","Wapstra, A.H. (promotor)","1987","","","en","doctoral thesis","","","","","","","","","Mechanical Maritime and Materials Engineering","","","","",""
"uuid:f3499349-d27b-4e77-877b-9e5d362e9d3b","http://resolver.tudelft.nl/uuid:f3499349-d27b-4e77-877b-9e5d362e9d3b","Study on turbulent fluctuations in diffusion flames using laser induced fluerescence","De Vries, J.E.","Hoogendoorn, C.J. (promotor)","1994","","","en","doctoral thesis","","","","","","","","","Applied Sciences","","","","",""
"uuid:e24ebff9-024b-4fa7-b2e4-9a8c5af1ca30","http://resolver.tudelft.nl/uuid:e24ebff9-024b-4fa7-b2e4-9a8c5af1ca30","Application of luminophores in sandtransport-studies","De Vries, M.","Hinze, J.O. (promotor); Van Spiegel, E. (promotor)","1966","The quantitative determination of bed-material-transport by means of tracers has been considered. For a stationary-stochastical transport-condition the dispersion of tracers has been described by a diffusion-equation of the gradienttype. The parameters of the dispersion-model are derived from the measured concentrations by a least-squares procedure. The measuring-technique has been based on the application of fluorescent tracers (luminophores). Some flume-tests show that the method proposed yields fair quantitative answers.","sediment transport; tracers; bed load transport","en","doctoral thesis","Meinema, Delft","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:8df8176f-dd33-4678-8370-78a2c2862863","http://resolver.tudelft.nl/uuid:8df8176f-dd33-4678-8370-78a2c2862863","Model-Based Brake Control including Tyre Behaviour","De Vries, E.J.H.","Rixen, D.J. (promotor); Verhaegen, M. (promotor)","2012","The objective of the thesis is to develop a method for controlled braking of a vehicle. The brake pedal depression has been considered to be proportional to the intended deceleration. The brake controller is not aimed to replace a cruise control; it will have an anti-lock braking (ABS) function. The brake control is essentially designed to be a continuous control law with a continuous brake torque output suitable for using it on real world actuators. To develop the continuous control and taking into account the friction and elastic properties of the tyre, a quarter-car model with LuGre tyre has been derived. Considering only a quarter car keeps the model compact and by having 4 brake controllers each wheel can be controlled individually...","braking; tyre model; flatness; brake control","en","doctoral thesis","","","","","","","","","Mechanical, Maritime and Materials Engineering","Precision and Microsystems Engineering","","","",""
"uuid:9a701423-8559-4a44-be5d-370d292b0df3","http://resolver.tudelft.nl/uuid:9a701423-8559-4a44-be5d-370d292b0df3","Physics of Blown Sand and Coastal Dunes","De Vries, S.","Stive, M.J.F. (promotor)","2013","","sediment transport; wind; dunes; coast","en","doctoral thesis","","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:bd3b2294-e095-407d-bb8d-1c66f6651ae8","http://resolver.tudelft.nl/uuid:bd3b2294-e095-407d-bb8d-1c66f6651ae8","Blunt and Sharp Notch Behaviour of Glare Laminates","De Vries, T.J.","Vogelesang, L.B. (promotor); De Borst, R. (promotor)","2001","Glare laminates are materials that consist of alternating aluminium and glass prepreg layers especially designed for aeroplane structures. The result is a material that combines the properties of its constituents and the properties of a bonded structure. Some of the favourable characteristics of Glare are its fatigue, impact and fire resistance properties and the possibility to create tailored design solutions. After 25 years of development and extensive investigations within the aerospace environment, Glare is now ready to be applied for industrial production. It will be applied in large parts of the new Airbus A380 fuselage, which is planned to have its first flight in 2004. This research describes the behaviour of Glare with holes that are made within production and the behaviour when the material is damaged due to an impact like for example a bird strike or an engine seperationf what creates cracks. These holes and this damage are regarded as blunt and sharp notches respectively. The failure mechanisms that were observed are investigated and function as the basis for the development of engineering calculation methods for the blunt and sharp notch behaviour of arbitrary Glare laminates. Additional research concerning the behaviour of spliced Glare laminates in the presence of notches, the presence of a crack in a row of holes and the development of Glare with crack stoppers is presented.","glare; blunt notch; residual strength; calculation methods","en","doctoral thesis","Delft University Press","","","","","","","","Aerospace Engineering","","","","",""
"uuid:c062859e-9d74-4bbf-a685-a4c47f017f78","http://resolver.tudelft.nl/uuid:c062859e-9d74-4bbf-a685-a4c47f017f78","Presteren door vastgoed: Onderzoek naar de gevolgen van vastgoedingrepen voor de prestatie van hogescholen","De Vries, J.C.","","2007","Steeds vaker wordt vastgoed gebruikt om op een of andere wijze de prestatie van de organisatie te verbeteren. Bijvoorbeeld door een verbeterde uitstraling, een kostenreductie of verhoging van de motivatie van medewerkers. Probleem is dat niet op te maken is in hoeverre de effecten het gevolg zijn van de vastgoedingreep of van een verandering in de markt of een organisatiewijziging. Hierdoor kan vastgoed onvoldoende ingezet worden om doelbewust de prestatie te verbeteren. In dit onderzoek is antwoord gezocht op de vraag op welke wijze vastgoed bij kan dragen aan de prestatie van de organisatie waarbij zowel de kosten als de baten aan de orde komen. Het empirisch onderzoek richt zich op de hbo-sector in Nederland. De ontwikkelingen met betrekking tot de educatieve processen, wet- en regelgeving (waaronder de financiering) en toenemende concurrentie hebben direct en indirect invloed op de huisvesting van hogescholen. De omvang van de totale vastgoedportefeuille in vloeroppervlak en in financiële waarde is groot. Gevolg is dat beslissingen ten aanzien van vastgoed een belangrijke rol zullen gaan spelen in het voortbestaan van de instellingen. Om de juiste beslissingen te kunnen nemen ten aanzien van het vastgoed is inzicht nodig in de wijze waarop vastgoed de prestatie van de hogescholen beïnvloedt. Het resultaat van het onderzoek is een model dat het verkregen inzicht tussen vastgoed en de organisatieprestatie op dusdanige wijze weergeeft dat het doelbewust gebruikt kan worden om de prestatie van organisaties te verbeteren.","vastgoed; prestatie indicatoren; hoger onderwijs","nl","doctoral thesis","Eburon","","","","","","","","Architecture","","","","",""
"uuid:f7a6569c-ea6b-4618-a671-efa13bbf51d0","http://resolver.tudelft.nl/uuid:f7a6569c-ea6b-4618-a671-efa13bbf51d0","On the theory of lammellar phases of charged fluid membranes","De Vries, R.J.","Odijk, T. (promotor)","1998","","","en","doctoral thesis","","","","","","","","","Applied Sciences","","","","",""
"uuid:5f96c4ea-efc0-46d6-a2ac-782935132498","http://resolver.tudelft.nl/uuid:5f96c4ea-efc0-46d6-a2ac-782935132498","Identification of model uncertainty for control design","De Vries, D.K.","Bosgra, O.H. (promotor)","1994","","system identification; model uncertainty; robust control","en","doctoral thesis","","","","","","","","","Mechanical Maritime and Materials Engineering","","","","",""
"uuid:7b1b7ad4-e4e5-4499-afdc-b18b15b495c8","http://resolver.tudelft.nl/uuid:7b1b7ad4-e4e5-4499-afdc-b18b15b495c8","The development of house prices in the Netherlands","Boelhouwer, P.J.; Conijn, J.B.S.; De Vries, P.","","1996","","","en","journal article","","","","","","","","","","","","","",""
"uuid:c7f9a197-73d6-4ed3-a703-d064db50cf9f","http://resolver.tudelft.nl/uuid:c7f9a197-73d6-4ed3-a703-d064db50cf9f","Engineering Acetyl Coenzyme A Supply: Functional Expression of a Bacterial Pyruvate Dehydrogenase Complex in the Cytosol of Saccharomyces cerevisiae","Kozak, B.U.; Van Rossum, H.M.; Luttik, M.A.H.; Akeroyd, M.; Benjamin, K.R.; Wu, L.; De Vries, S.; Daran, J.M.; Pronk, J.T.; Van Maris, A.J.A.","","2014","The energetic (ATP) cost of biochemical pathways critically determines the maximum yield of metabolites of vital or commercial relevance. Cytosolic acetyl coenzyme A (acetyl-CoA) is a key precursor for biosynthesis in eukaryotes and for many industrially relevant product pathways that have been introduced into Saccharomyces cerevisiae, such as isoprenoids or lipids. In this yeast, synthesis of cytosolic acetyl-CoA via acetyl-CoA synthetase (ACS) involves hydrolysis of ATP to AMP and pyrophosphate. Here, we demonstrate that expression and assembly in the yeast cytosol of an ATP-independent pyruvate dehydrogenase complex (PDH) from Enterococcus faecalis can fully replace the ACS-dependent pathway for cytosolic acetyl-CoA synthesis. In vivo activity of E. faecalis PDH required simultaneous expression of E. faecalis genes encoding its E1?, E1?, E2, and E3 subunits, as well as genes involved in lipoylation of E2, and addition of lipoate to growth media. A strain lacking ACS that expressed these E. faecalis genes grew at near-wild-type rates on glucose synthetic medium supplemented with lipoate, under aerobic and anaerobic conditions. A physiological comparison of the engineered strain and an isogenic Acs+ reference strain showed small differences in biomass yields and metabolic fluxes. Cellular fractionation and gel filtration studies revealed that the E. faecalis PDH subunits were assembled in the yeast cytosol, with a subunit ratio and enzyme activity similar to values reported for PDH purified from E. faecalis. This study indicates that cytosolic expression and assembly of PDH in eukaryotic industrial microorganisms is a promising option for minimizing the energy costs of precursor supply in acetyl-CoA-dependent product pathways.","","en","journal article","","","","","","","","","Applied Sciences","Biotechnology","","","",""
"uuid:be9be197-a627-4d60-980f-e50a1102318b","http://resolver.tudelft.nl/uuid:be9be197-a627-4d60-980f-e50a1102318b","Kinetic Resolution of a Tryptophan-radical Intermediate in the Reaction Cycle of Paracoccus denitrificans Cytochrome c Oxidase","Wiertz, F.G.M.; Richter, O.M.; Ludwig, B.; De Vries, S.","","2007","","","en","journal article","American Society of Biological Chemists","","","","","","","","Applied Sciences","Biotechnology","","","",""
"uuid:92497c0d-d4ed-444d-97f7-b3ef6cdbdff6","http://resolver.tudelft.nl/uuid:92497c0d-d4ed-444d-97f7-b3ef6cdbdff6","Increasing cheat robustness of crowdsourcing tasks","Eickhoff, C.; De Vries, A.P.","","2012","Crowdsourcing successfully strives to become a widely used means of collecting large-scale scientific corpora. Many research fields, including Information Retrieval, rely on this novel way of data acquisition. However, it seems to be undermined by a significant share of workers that are primarily interested in producing quick generic answers rather than correct ones in order to optimise their time-efficiency and, in turn, earn more money. Recently, we have seen numerous sophisticated schemes of identifying such workers. Those, however, often require additional resources or introduce artificial limitations to the task. In this work, we take a different approach by investigating means of a priori making crowdsourced tasks more resistant against cheaters.","crowdsourcing; user experiments; stability; human factors","en","journal article","Springer-Verlag","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Intelligent Systems","","","",""
"uuid:ea52472f-6bad-4ab0-8ca6-ebf445e41f2d","http://resolver.tudelft.nl/uuid:ea52472f-6bad-4ab0-8ca6-ebf445e41f2d","What preconceptions and attitudes about engineering are prevalent amongst upper secondary school pupils? An international study","Koycu, U.; De Vries, M.J.","","2015","n the Netherlands, as well as in many other countries, there is an increasing interest in implementing education about engineering as a part of general education at the upper secondary school level. In order to know what pupils at that level think about engineering, a study has been done to investigate their attitude towards and their concept of engineering. This study was done not only in the Netherlands but also in 39 other countries. In the preparation of the study, pupils were asked to draw concept maps of what they thought engineering was about. In the quantitative main part of the study, pupils were asked to respond to 33 Likert-type attitude items and 32 concept-items of the same type. A factor analysis was done in order to reveal the dimensions in the pupils’ attitude and concept. In contrast to studies carried out amongst students in lower secondary school levels, a fairly clear concept about engineering was found. The gender differences relating to engineering, found in lower secondary education, were not found in upper secondary education. The prevalent attitude of students towards engineering indicated a fairly positive image of engineering.","attitudes; concepts; engineering; upper secondary school","en","journal article","Springer","","","","","","","","Applied Sciences","","","","",""
"uuid:ddba68a8-66c1-4cb9-979c-da0e7e1dc991","http://resolver.tudelft.nl/uuid:ddba68a8-66c1-4cb9-979c-da0e7e1dc991","Mijn makelaar","De Vries, P.","","2010","","","nl","journal article","","","","","","","","","OTB Research Institute","OTB onderzoek","","","",""
"uuid:81413909-72e9-4b2e-b3c5-59fd9e581ec2","http://resolver.tudelft.nl/uuid:81413909-72e9-4b2e-b3c5-59fd9e581ec2","Overdrachtsbelasting echt heel laag!","De Vries, P.","","2010","","","nl","journal article","VBO","","","","","","","","OTB Research Institute","","","","",""
"uuid:0a46b457-b49a-41e0-9480-ee91e38c5a1e","http://resolver.tudelft.nl/uuid:0a46b457-b49a-41e0-9480-ee91e38c5a1e","Concept learning by direct current design challenges in secondary education","Van Breukelen, D.H.J.; De Vries, M.J.; Schure, F.A.","","2016","This paper presents a mixed methods study in which 77 students and 3 teachers took part, that investigated the practice of Learning by Design (LBD). The study is part of a series of studies, funded by the Netherlands Organisation for Scientific Research, that aims to improve student learning, teaching skills and teacher training. LBD uses the context of design challenges to learn, among other things, science. Previous research showed that this approach to subject integration is quite successful but provides little profit regarding scientific concept learning. Perhaps, when the process of concept learning is better understood, LBD is a suitable method for integration. Through pre- and post-exams we measured, like others, a medium gain in the mastery of scientific concepts. Qualitative data revealed important focus-related issues that impede concept learning. As a result, mainly implicit learning of loose facts and incomplete concepts occurs. More transparency of the learning situation and a stronger focus on underlying concepts should make concept learning more explicit and coherent.","learning by design; physics; technology; concept learning; electric circuits","en","journal article","Springer","","","","","","","","Applied Sciences","","","","",""
"uuid:d9065c5b-cbe3-4bcf-bc55-0bd9f75d9782","http://resolver.tudelft.nl/uuid:d9065c5b-cbe3-4bcf-bc55-0bd9f75d9782","LAPSI 2.0 thematic network: D2.1 Good practices collection on access to data","Van Eechoud, M.; Van Velze, S.; Caspers, M.; Eskens, S.J.; Leerssen, P.; Austere, L.; Broomfield, H.; De Terwanghe, C.; Ellis, J.; Miska, M.; Lubarda, M.; Valero-Torrijos, J.; Pardo-Lopez, M.; Grothe, M.; Van Loenen, B.; Vrecar, S.; De Vries, M.","","2014","","","en","journal article","CIP","","","","","","","","Architecture and The Built Environment","OTB Research","","","",""
"uuid:dcafa53b-6be4-44d8-9ba0-121e29e9e6ef","http://resolver.tudelft.nl/uuid:dcafa53b-6be4-44d8-9ba0-121e29e9e6ef","Electron tunneling rates in respiratory complex I are tuned for efficient energy conversion","De Vries, S.; Dörner, K.; Strampraad, M.J.F.; Friedrich, T.","","2015","Respiratory complex I converts the free energy of ubiquinone reduction by NADH into a proton motive force, a redox reaction catalyzed by flavin mononucleotide(FMN) and a chain of seven iron–sulfur centers. Electron transfer rates between the centers were determined by ultrafast freezequenching and analysis by EPR and UV/Vis spectroscopy. The complex rapidly oxidizes three NADH molecules. The electron-tunneling rate between the most distant centers in the middle of the chain depends on the redox state of center N2 at the end of the chain, and is sixfold slower when N2 is reduced. The conformational changes that accompany reduction of N2 decrease the electronic coupling of the longest electro ntunneling step. The chain of iron–sulfur centers is not just a simple electron-conducting wire; it regulates the electrontunneling rate synchronizing it with conformation-mediated proton pumping, enabling efficient energy conversion. Synchronization of rates is a principle means of enhancing the specificity of enzymatic reactions.","","","journal article","","","","","","","","","Applied Sciences","Biotechnology","","","",""
"uuid:5209e256-39f1-4edb-bb9c-a07fb2a43ed2","http://resolver.tudelft.nl/uuid:5209e256-39f1-4edb-bb9c-a07fb2a43ed2","Voorspelling: De prijzen blijven stijgen","De Vries, P.","","2010","Wetenschappelijk onderzoek toont telkens aan dat economische experts niet beter voorspellen dan apen. Gorilla Jacko versloeg bijvoorbeeld overtuigend beursspeculanten en inktvis Paul haalde de wereldpers met zijn trefzekere voorspellingen tijdens het WK voetbal. Toch durf ik te voorspellen dat de woningprijzen blijven stijgen.","woningmarktanalyse","nl","journal article","","","","","","","","","OTB Research Institute for the Built Environment","OTB Onderzoek","","","",""
"uuid:ee5b2542-64a3-4307-8b99-f61690ee523b","http://resolver.tudelft.nl/uuid:ee5b2542-64a3-4307-8b99-f61690ee523b","Novel widely tunable monolithically integrated laser source","Latkowski, S.; Hansel, A.; Bhattacharya, N.; De Vries, T.; Augustin, L.; Williams, K.; Smit, M.; Bente, E.","","2015","","semiconductor laser; tunable laser; photonic integrated circuit","en","journal article","IEEE","","","","","","","","Applied Sciences","Imaging Physics","","","",""
"uuid:7b91aebb-08ee-4fb6-a292-f139ff502638","http://resolver.tudelft.nl/uuid:7b91aebb-08ee-4fb6-a292-f139ff502638","Metabolic modeling of denitrification in Agrobacterium tumefaciens: A tool to study inhibiting and activating compounds for the denitrification pathway","Kampschreur, M.J.; Kleerebezem, R.; Picioreanu, C.; Bakken, L.; Bergaust, L.; De Vries, S.; Jetten, M.S.M.; Van Loosdrecht, M.C.M.","","2012","A metabolic network model for facultative denitrification was developed based on experimental data obtained with Agrobacterium tumefaciens. The model includes kinetic regulation at the enzyme level and transcription regulation at the enzyme synthesis level. The objective of this work was to study the key factors regulating the metabolic response of the denitrification pathway to transition from oxic to anoxic respiration and to find parameter values for the biological processes that were modeled. The metabolic model was used to test hypotheses that were formulated based on the experimental results and offers a structured look on the processes that occur in the cell during transition in respiration. The main phenomena that were modeled are the inhibition of the cytochrome c oxidase by nitric oxide (NO) and the (indirect) inhibition of oxygen on the denitrification enzymes. The activation of transcription of nitrite reductase and NO reductase by their respective substrates were hypothesized. The general assumption that nitrite and NO reduction are controlled interdependently to prevent NO accumulation does not hold for A. tumefaciens. The metabolic network model was demonstrated to be a useful tool for unraveling the different factors involved in the complex response of A. tumefaciens to highly dynamic environmental conditions.","agrobacterium tumefaciens; denitrification; metabolic model; nitric oxide; nitrite reduction; nitrous oxide; NO reduction","en","journal article","Frontiers Research Foundation","","","","","","","","Applied Sciences","BT/Biotechnology","","","",""
"uuid:72725023-1178-4f5d-9653-c7a36e7e17bb","http://resolver.tudelft.nl/uuid:72725023-1178-4f5d-9653-c7a36e7e17bb","On the formation mechanisms of the diffuse atmospheric pressure dielectric barrier discharge in CVD processes of thin silica-like films","Starostin, S.A.; Premkumar, P.A.; Creatore, M.; Van Veldhuizen, E.M.; De Vries, H.; Paffen, R.M.J.; Van de Sanden, M.C.M.","","2009","Pathways of formation and temporal evolution of the diffuse dielectric barrier discharge at atmospheric pressure were experimentally studied in this work by means of optical (fast imaging camera) and electrical diagnostics. The chosen model system is relevant for applications of plasma-enhanced chemical vapor deposition of thin silica-like film on the polymeric substrate, from cost-efficient gas mixtures of Ar/N2/O2/hexamethyldisiloxane. It was found that the discharge can gradually experience the phases of homogeneous low current Townsend-like mode, local Townsend to glow transition and expanding high current density (?0.7Acm?2) glow-like mode. While the glow-like current spot occupies momentarily only a small part of the electrode area, its expanding behavior provides uniform treatment of the whole substrate surface. Alternatively, it was observed that a visually uniform discharge can be formed by the numerous microdischarges overlapping over the large electrode area.","","en","journal article","Institute of Physics","","","","","","","","Mechanical, Maritime and Materials Engineering","","","","",""
"uuid:4514a357-ac9e-4275-a53d-f9ca9fd9296d","http://resolver.tudelft.nl/uuid:4514a357-ac9e-4275-a53d-f9ca9fd9296d","Deriving content-specific measures of room acoustic perception using a binaural, nonlinear auditory model","Van Dorp Schuitman, J.; De Vries, D.; Lindau, A.","","2013","Acousticians generally assess the acoustic qualities of a concert hall or any other room using impulse response-based measures such as the reverberation time, clarity index, and others. These parameters are used to predict perceptual attributes related to the acoustic qualities of the room. Various studies show that these physical measures are not able to predict the related perceptual attributes sufficiently well under all circumstances. In particular, it has been shown that physical measures are dependent on the state of occupation, are prone to exaggerated spatial fluctuation, and suffer from lacking discrimination regarding the kind of acoustic stimulus being presented. Accordingly, this paper proposes a method for the derivation of signal-based measures aiming at predicting aspects of room acoustic perception from content specific signal representations produced by a binaural, nonlinear model of the human auditory system. Listening tests were performed to test the proposed auditory parameters for both speech and music. The results look promising; the parameters correlate with their corresponding perceptual attributes in most cases.","acoustic variables measurement; architectural acoustics; hearing; music; nonlinear acoustics; speech recognition","en","journal article","Acoustical Society of America","","","","","","","2013-09-01","Applied Sciences","IST/Imaging Science and Technology","","","",""
"uuid:0795dd04-63b0-4fed-a04e-58929818fb23","http://resolver.tudelft.nl/uuid:0795dd04-63b0-4fed-a04e-58929818fb23","Port-city development in Rotterdam: A true love story","Aarts, M.; Daamen, T.A.; Huijs, M.; De Vries, W.","","2012","This article tells the story of how city and the port have found a joint development strategy for Rotterdam’s CityPorts during the past decade. The process has resulted in more realistic, so-called ‘organic’ development plans, which mark the emergence of a new relationship between the port and the city. In essence, Rotterdam has produced new ways of thinking and acting with regard to the areas ‘between city and port’. Inside the so-called port city interface, the port authority and the municipality are at the forefront of reinventing the relationships between port and city for the twenty-first century.","","en","journal article","","","","","","","","","Architecture","Real Estate and Housing","","","",""
"uuid:2dbf77bd-2d9b-4a40-9760-f7f0dc251ac0","http://resolver.tudelft.nl/uuid:2dbf77bd-2d9b-4a40-9760-f7f0dc251ac0","Prijsbewegingen op de woningmarkt: Een educatieve bijeenkomst","De Vries, P.","","2009","","","nl","journal article","","","","","","","","","OTB Research Institute","Housing Systems","","","",""
"uuid:f93c0b2f-fe53-4568-9b0e-fa18b61b27b3","http://resolver.tudelft.nl/uuid:f93c0b2f-fe53-4568-9b0e-fa18b61b27b3","On-site Testing and PD Diagnosis of High Voltage Power Cables","Gulski, E.; Cichecki, P.; Wester, F.; Smit, J.J.; Bodega, R.; Hermans, T.J.W.H.; Seitz, P.P.; Quak, B.; De Vries, F.","","2008","In addition to after-laying of new-installed high voltage (HV) power cables the use of on-site non-destructive on-site testing and diagnosis of service aged power cables is becoming an important issue to determine the actual condition of the cable systems and to determine the future performances. In this paper based on field experience an overview is presented on on-site testing and partial discharge diagnosis of HV power cables with regard to on-site testing methods: energizing, diagnostic aspects, possibilities and implications for new and service aged power cables.","high voltage power cables; on-site testing; ac over-voltages; partial discharges; diagnosis; condition assessment","en","journal article","IEEE","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Electrical Sustainable Energy","","","",""
"uuid:63710b7a-7753-4fbb-ab19-d23b4eaab8f3","http://resolver.tudelft.nl/uuid:63710b7a-7753-4fbb-ab19-d23b4eaab8f3","Equilibrium between interest payments and income in the housing market","De Vries, P.; Boelhouwer, P.J.","","2009","The literature on housing markets suggests that house prices in almost all western economies can be explained by short-run demand-oriented variables and a long- run term. The basic principles of the theory are that the short-run fluctuations, which are based on recent price developments (shocks), occur due to market imperfection, while over the long term, causality with such fundamentals as income will recover. Nonetheless, many of the interesting questions in housing economics concern adjustments toward equilibrium. This paper seeks to identify a long-run equilibrium between interest payments and household income (interest-to-income ratio) instead of between house prices and income (price-to-income ratio).","House prices; Interest payments; Error-correction model; Housing market equilibrium; Household income; The Netherlands","en","journal article","","","","","","","","","OTB Research Institute","","","","",""
"uuid:bd86a44d-32b7-48e0-befa-95ab6a4368fa","http://resolver.tudelft.nl/uuid:bd86a44d-32b7-48e0-befa-95ab6a4368fa","Metabolic modeling of denitrification in Agrobacterium tumefaciens: A tool to study inhibiting and activating compounds for the denitrification pathway","Kampschreur, M.J.; Kleerebezem, R.; Picioreanu, C.; Bakken, L.; Bergaust, L.; De Vries, S.; Jetten, M.S.M.; Van Loosdrecht, M.C.M.","","2012","","Agrobacterium tumefaciens; denitrification; metabolic model; nitric oxide; nitrite reduction; nitrous oxide; NO reduction","en","journal article","Frontiers","","","","","","","","Applied Sciences","Biotechnology","","","",""
"uuid:e83a171b-9218-4f1c-8f8c-abed89555831","http://resolver.tudelft.nl/uuid:e83a171b-9218-4f1c-8f8c-abed89555831","LAPSI 2.0 thematic network: D2.2 Position paper access to data","Van Eechoud, M.; Van Velze, S.; Caspers, M.; Eskens, S.J.; Leerssen, P.; Austere, L.; Broomfield, H.; De Terwanghe, C.; Ellis, J.; Hittmar, G.; Morando, F.; Lubarda, M.; Van Loenen, B.; Sappa, C.; De Vries, M.","","2014","","","en","journal article","CIP","","","","","","","","Architecture and The Built Environment","OTB Research","","","",""
"uuid:9d44aff1-76a1-471d-bf7f-ff6e8023d458","http://resolver.tudelft.nl/uuid:9d44aff1-76a1-471d-bf7f-ff6e8023d458","A property of algebraic univoque numbers","De Vries, M.","","2007","Consider the set U of real numbers q >= 1 for which only one sequence (c(i)) of integers 0 <= c(i) <= q satisfies the equality Sigma(infinity)(i= 1) ciq(-i) =1. We show that the set of algebraic numbers in U is dense in the closure (U) over bar of U.","beta-expansions; univoque numbers","en","journal article","Akadémiai Kiadó and Springer Science+Business Media","","","","","","","","Electrical Engineering, Mathematics and Computer Science","","","","",""
"uuid:f7a36fc2-b1bb-44a6-8c59-3c2ce9f58fb4","http://resolver.tudelft.nl/uuid:f7a36fc2-b1bb-44a6-8c59-3c2ce9f58fb4","The strange case of reproducibility versus representativeness in contextual suggestion test collections","Samar, T.; Bellogin, A.; De Vries, A.P.","","2015","The most common approach to measuring the effectiveness of Information Retrieval systems is by using test collections. The Contextual Suggestion (CS) TREC track provides an evaluation framework for systems that recommend items to users given their geographical context. The specific nature of this track allows the participating teams to identify candidate documents either from the Open Web or from the ClueWeb12 collection, a static version of the web. In the judging pool, the documents from the Open Web and ClueWeb12 collection are distinguished. Hence, each system submission should be based only on one resource, either Open Web (identified by URLs) or ClueWeb12 (identified by ids). To achieve reproducibility, ranking web pages from ClueWeb12 should be the preferred method for scientific evaluation of CS systems, but it has been found that the systems that build their suggestion algorithms on top of input taken from the Open Web achieve consistently a higher effectiveness. Because most of the systems take a rather similar approach to making CSs, this raises the question whether systems built by researchers on top of ClueWeb12 are still representative of those that would work directly on industry-strength web search engines. Do we need to sacrifice reproducibility for the sake of representativeness? We study the difference in effectiveness between Open Web systems and ClueWeb12 systems through analyzing the relevance assessments of documents identified from both the Open Web and ClueWeb12. Then, we identify documents that overlap between the relevance assessments of the Open Web and ClueWeb12, observing a dependency between relevance assessments and the source of the document being taken from the Open Web or from ClueWeb12. After that, we identify documents from the relevance assessments of the Open Web which exist in the ClueWeb12 collection but do not exist in the ClueWeb12 relevance assessments. We use these documents to expand the ClueWeb12 relevance assessments. Our main findings are twofold. First, our empirical analysis of the relevance assessments of 2 years of CS track shows that Open Web documents receive better ratings than ClueWeb12 documents, especially if we look at the documents in the overlap. Second, our approach for selecting candidate documents from ClueWeb12 collection based on information obtained from the Open Web makes an improvement step towards partially bridging the gap in effectiveness between Open Web and ClueWeb12 systems, while at the same time we achieve reproducible results on well-known representative sample of the web.","reproducibility; contextual suggestion; open vs archived web; test collections evaluation; filtering and recommendation; web IR and social media search","en","journal article","Springer","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Intelligent Systems","","","",""
"uuid:312143bf-ec44-4081-bc0b-f553c699c665","http://resolver.tudelft.nl/uuid:312143bf-ec44-4081-bc0b-f553c699c665","Discrete event systems with stochastic processing times","Olsder, G.J.; Resing, J.A.C.; De Vries, R.E.; Keane, M.S.; Hooghiemstra, G.","","1990","","","en","journal article","IEEE","","","","","","","","","","","","",""
"uuid:332c0549-9b7b-4266-9829-4b5834d74431","http://resolver.tudelft.nl/uuid:332c0549-9b7b-4266-9829-4b5834d74431","De woningprijsontwikkeling verklaard","De Vries, P.","","2011","De ontwikkeling van de Nederlandse woningprijs kent vele gezichten. Denk daarbij aan de verschillende woningprijsindices, de mediane woningprijs die de NVM publiceert en het gemiddelde van het Kadaster. Op de lange termijn lijken deze reeksen eenzelfde ontwikkeling door te maken, maar op de korte termijn zijn er verschillen. In het najaar van 2008 is de koopwoningmarkt getroffen door de kredietcrisis en ontwikkelde de prijsindex zich duidelijk afwijkend van het prijsgemiddelde. Aan de hand van mijn proefschrift zoek ik naar een verklaring hiervoor.","","nl","journal article","VOGON","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:1f7fd890-494f-44de-945b-1c761dd36eb7","http://resolver.tudelft.nl/uuid:1f7fd890-494f-44de-945b-1c761dd36eb7","Concepts and contexts in engineering and technology education: An international and interdisciplinary Delphi study","Rossouw, A.; Hacker, M.; De Vries, M.J.","","2010","Inspired by a similar study by Osborne et al. we have conducted a Delphi study among experts to identify key concepts to be taught in engineering and technology education and relevant and meaningful contexts through which these concepts can be taught and learnt. By submitting the outcomes of the Delphi study to a panel of experts in a twoday meeting we were able to add structure to the Delphi results. Thus we reached a concise list of concepts and contexts that can be used to develop curricula for education about engineering and technology as a contribution to technological literacy goals in education.","delphi study; engineering and technology education; concept-context; expert panel; engineering and technology education curriculum development; technological literacy; ETE; teaching concepts in contexts","en","journal article","Springer Verlag","","","","","","","","Applied Sciences","Science Education and Communication","","","",""
"uuid:0c03b8a5-c7c5-4fd1-a19d-30a73617976f","http://resolver.tudelft.nl/uuid:0c03b8a5-c7c5-4fd1-a19d-30a73617976f","Probabilistic relevance ranking for collaborative filtering","Wang, J.; Robertson, S.; De Vries, A.P.; Reinders, M.J.T.","","2008","Collaborative filtering is concerned with making recommendations about items to users. Most formulations of the problem are specifically designed for predicting user ratings, assuming past data of explicit user ratings is available. However, in practice we may only have implicit evidence of user preference; and furthermore, a better view of the task is of generating a top-N list of items that the user is most likely to like. In this regard, we argue that collaborative filtering can be directly cast as a relevance ranking problem. We begin with the classic Probability Ranking Principle of information retrieval, proposing a probabilistic item ranking framework. In the framework, we derive two different ranking models, showing that despite their common origin, different factorizations reflect two distinctive ways to approach item ranking. For the model estimations, we limit our discussions to implicit user preference data, and adopt an approximation method introduced in the classic text retrieval model (i.e. the Okapi BM25 formula) to effectively decouple frequency counts and presence/absence counts in the preference data. Furthermore, we extend the basic formula by proposing the Bayesian inference to estimate the probability of relevance (and non-relevance), which largely alleviates the data sparsity problem. Apart from a theoretical contribution, our experiments on real data sets demonstrate that the proposed methods perform significantly better than other strong baselines.","collaborative filtering; recommender systems; probability ranking principle; relevance ranking; personalization","en","journal article","Springer","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Mediamatics","","","",""
"uuid:7ae2d9b0-19f4-49ea-a1b9-973865784c63","http://resolver.tudelft.nl/uuid:7ae2d9b0-19f4-49ea-a1b9-973865784c63","Developing knowledge cities: Aligning urban, corporate and university strategies","Den Heijer, A.C.; De Vries, J.C.; De Jonge, H.","","2011","The successful development of knowledge cities increasingly depends on collaboration between urban and regional authorities, knowledge institutions and businesses. Policy makers and business strategists do acknowledge the interrelated objectives of these actors in the knowledge economy and their different roles in a common network. They also identify the physical settings as an important resource to achieve mutual goals. While a shift from awareness to active collaboration is taking place, the rapidly changing context demands a faster pace. Ultimately, alignment of urban, corporate and university strategies is required to develop knowledge cities that can compete internationally. Managing the university campus – as the basis of a knowledge city – is a task of many stakeholders within and outside universities and implies the integration of strategic, financial, functional and physical perspectives. Increasingly higher education institutions (HEI) acknowledge the role of the campus in attracting and retaining students and employees. More and more research – comparative analysis of international case studies - has shown that there is a clear relationship between the presence of a university and the appeal of a city as a location for businesses and institutions. At the same time more and more universities are showing a sense of responsibility to make a contribution to the solution of social and societal problems in their city. In this article we follow four main steps in strategy design for campus development and illustrate these steps with findings from literature, empirical data and case studies.","knowledge city; university campus; campus management; university-city collaboration; urban development","","journal article","","","","","","","","","Architecture","Real Estate and Housing","","","",""
"uuid:8da6a5e4-9616-4e86-82b8-93a749bd5590","http://resolver.tudelft.nl/uuid:8da6a5e4-9616-4e86-82b8-93a749bd5590","Developing a House Price Index for The Netherlands: A Practical Application of Weighted Repeat Sales","Jansen, S.J.T.; De Vries, P.; Coolen, H.C.C.H.; Lamain, C.J.M.; Boelhouwer, P.J.","","2007","This paper describes the development of a house price index that has been introduced in May 2005 in The Netherlands. This monthly index, called Woningwaarde Index Kadaster (House Price Index Kadaster), is designed to detect changes in the price of the overall stock of owner-occupied homes. Fifty-five indices are calculated: one overall index, four regional indices, 12 provincial indices and 38 indices based on combinations of region/province and dwelling type. We used Case and Shiller’s geometric Weighted Repeat Sales Model to calculate monthly house price indices. We used recorded data on the sales of over 500,000 owner-occupied homes in The Netherlands, all representing repeat sales between January 1993 and December 2006. The accuracy of the index was determined using the 95% confidence interval. We observed that accuracy might become a problem in smaller sub samples. Revision volatility was explored by comparing the index values computed from all available data until December 2005 with the index values computed from the data available until December 2006. Our analysis showed that revision volatility does not seem to be a major problem to the index. We also explored heteroskedasticity in the Repeat Sales method but did not find conclusive evidence for the proposed heteroskedasticity. Given our target (a geometric mean index value) and the characteristics of the dataset (very large but without property characteristics) the Repeat Sales Method seems to be adequate for calculating a house price index for The Netherlands.","Weighted repeat sales; House price index; Revision volatility; Accuracy; Heteroskedasticity","en","journal article","Springer","","","","","","","","OTB Research Institute","","","","",""
"uuid:16cc90b6-e373-4d3d-ac6d-e006d1c16288","http://resolver.tudelft.nl/uuid:16cc90b6-e373-4d3d-ac6d-e006d1c16288","The market (in-)stability reserve for EU carbon emission trading: Why it might fail and how to improve it","Richstein, J.C.; Chappin, E.J.L.; De Vries, L.J.","","2015","The EU parliament has accepted a proposal of the EU commission on the backloading of EU emission allowances (EUA), where the auctioning of EUAs is postponed to future time periods. The EU commission has also proposed a market stability reserve (MSR), which is a quantity-based stabilisation policy that is aimed at controlling the volume of EUAs in circulation. Using an agent-based electricity market simulation with endogenous investment and a CO2 market (including banking), we analyse the backloading reform and the proposed MSR. We find backloading to only have a short-term impact of CO2 prices; regardless, there is a significant risk of high CO2 prices and volatility in the EU ETS. Our simulations indicate that the triggers of the proposed MSR appear to be set too low for the hedging need of power producers, effectively leading to a stricter cap in its initial 10–15 years of operation. While the current proposal may be improved by choosing different triggers, a reserve that is based on volume triggers is likely to increase price volatility, contrary to its purpose. Additional problems are the two-year delay in the response time and the abruptness of the response function, combined with the difficulty of estimating future hedging behaviour.","EU ETS; carbon market; market stability reserve; backloading; agent-based modelling; electricity market","en","journal article","Elsevier","","","","","","","","Technology, Policy and Management","Engineering, Systems and Services","","","",""
"uuid:1ece93d3-e845-43de-b93e-a29febf264b6","http://resolver.tudelft.nl/uuid:1ece93d3-e845-43de-b93e-a29febf264b6","Teaching and learning the nature of technical artifacts","Frederik, I.; Sonneveld, W.; De Vries, M.J.","","2010","Artifacts are probably our most obvious everyday encounter with technology. Therefore, a good understanding of the nature of technical artifacts is a relevant part of technological literacy. In this article we draw from the philosophy of technology to develop a conceptualization of technical artifacts that can be used for educational purposes. Furthermore we report a small exploratory empirical study to see to what extent teachers’ intuitive ideas about artifacts match with the way philosophers write about the nature of artifacts. Finally, we suggest a teaching and learning strategy for improving (student) teachers’ concepts of technical artifacts through practical activities.","Philosophy of technology; Technical artifacts; Designing","en","journal article","Springer Verlag","","","","","","","","Applied Sciences","Science Education and Communication","","","",""
"uuid:06b9dd9c-8cde-4c72-8aa6-0fdc221e882f","http://resolver.tudelft.nl/uuid:06b9dd9c-8cde-4c72-8aa6-0fdc221e882f","Waardecreatie in Prachtwijken","De Vries, P.; Marien, A.A.A.","","2009","Woningcorporaties zijn maatschappelijke ondernemers. Zij streven naar empowerment; een term voor economische zelfstandigheid, perspectief op een passende wooncarrière, arbeidsparticipatie en zelfredzaamheid. Daarvoor zijn wel renderende investeringen noodzakelijk. Verondersteld wordt dat deze terugkomen als een waardestijging van de woningportefeuille. De vraag is of die veronderstelde waardevermeerdering ook meetbaar is. Wij kunnen vooralsnog geen overtuigend bewijs leveren dat de investeringen van de afgelopen decennia een prijseffect heeft gehad.","","en","journal article","","","","","","","","","OTB Research Institute","Housing Systems","","","",""
"uuid:7671cc38-c5d5-480c-b763-9a89884c68b6","http://resolver.tudelft.nl/uuid:7671cc38-c5d5-480c-b763-9a89884c68b6","Vakantieprijzen","De Vries, P.","","2011","","","nl","journal article","","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:bc72a982-fced-4773-a98a-7d28a1ed59f3","http://resolver.tudelft.nl/uuid:bc72a982-fced-4773-a98a-7d28a1ed59f3","The measurement of house prices: A review of the sale price appraisal ratio method","De Haan, J.; Van der Wal, E.B.; De Vries, P.","","2009","The sale price appraisal ratio (SPAR) method has been applied in a number of countries to construct house price indexes. This paper reviews the statistical and index number properties of the SPAR approach. Three types of SPAR indexes are distinguished: a weighted index, which aims at tracking the price change of the stock of owner-occupied houses, and two unweighted indexes, an arithmetic one and a geometric one. We also discuss stratified versions of these indexes and show how stratification can be used to estimate an expenditure-based Laspeyres-type price index. Empirical results for the Netherlands are given and compared with the repeat-sales index published by the Dutch land registry until January 2008.","house price index; SPAR method; appraisal value; house price","en","journal article","IOS Press","","","","","","","","OTB Research Institute","Housing Systems","","","",""
"uuid:7e0a7f2b-e6f9-42cc-8c2a-33ef2a0d9a1f","http://resolver.tudelft.nl/uuid:7e0a7f2b-e6f9-42cc-8c2a-33ef2a0d9a1f","cbb(3)-type cytochrome oxidase in the obligately chemolithoautotrophic Thiobacillus sp. W5","Visser, J.M.; De Jong, G.A.H.; De Vries, S.; Robertson, L.A.; Kuenen, J.G.","","1997","","Thiobacillus Autotrophy Chemolithotrophy Respiratory chain Cytochrome c oxidase Thiobacillus Autotrophie Chimiolithotrophie Chaine respiratoire Cytochrome c oxidase Cytochrome cbb3 Thiobacillus Autotrofia Quimiolitotrofia Cadena respiratoria Cy","en","journal article","","","","","","","","","","","","","",""
"uuid:b6d45cf7-eac9-48b8-9b12-357a888641b5","http://resolver.tudelft.nl/uuid:b6d45cf7-eac9-48b8-9b12-357a888641b5","Electron Tunneling Rates in Respiratory Complex?I Are Tuned for Efficient Energy Conversion","De Vries, S.; Dörner, K.; Strampraad, M.J.F.; Friedrich, T.","","2015","Respiratory complex I converts the free energy of ubiquinone reduction by NADH into a proton motive force, a redox reaction catalyzed by flavin mononucleotide(FMN) and a chain of seven iron–sulfur centers. Electron transfer rates between the centers were determined by ultrafast freeze-quenching and analysis by EPR and UV/Vis spectroscopy. The complex rapidly oxidizes three NADH molecules. The electron-tunneling rate between the most distant centers in the middle of the chain depends on the redox state of center N2 at the end of the chain, and is sixfold slower when N2 is reduced. The conformational changes that accompany reduction of N2 decrease the electronic coupling of the longest electron-tunneling step. The chain of iron–sulfur centers is not just a simple electron-conducting wire; it regulates the electron-tunneling rate synchronizing it with conformation-mediated proton pumping, enabling efficient energy conversion. Synchronization of rates is a principle means of enhancing the specificity of enzymatic reactions.","bioenergetics; electron tunneling; enzyme kinetics; metalloenzymes; reaction mechanisms","en","journal article","Wiley","","","","","","","","Applied Sciences","BT/Biotechnology","","","",""
"uuid:aae48e5a-65a7-4740-adb6-cafa5de7a7d9","http://resolver.tudelft.nl/uuid:aae48e5a-65a7-4740-adb6-cafa5de7a7d9","Towards a real estate monitoring information system in Romania","De Vries, P.; Faber, R.","","2009","This paper examines the construction of real estate databases and the valuation of properties in Buzau, Romania. One of the criteria for candidate states for EU membership is an effective monitoring system for the land and real estate markets. The objective of this paper is twofold. First, the development of a set of databases, procedures and guidelines that enables a valuation process on the Romanian real estate market and secondly, using those databases, to gain insight into the real market value of recently sold properties. We use the observations of estate agents and banks starting in May 2007. Using hedonic regression, with house and neighbourhood characteristics, we estimate the house prices.","","en","journal article","","","","","","","","","OTB Research Institute","Sectie VWM","","","",""
"uuid:080f3c46-2028-41b6-beb3-2c502b3d31df","http://resolver.tudelft.nl/uuid:080f3c46-2028-41b6-beb3-2c502b3d31df","Een huurprijsindex voor Vlaanderen","De Vries, P.; Vastmans, F.","","2011","Vlaanderen heeft geen betrouwbare informatie over de ontwikkeling van huurprijzen. Huurcontracten in Vlaanderen hebben veelal een looptijd van een, drie of negen jaar. Bij het aangaan van een nieuwe huurovereenkomst kan de verhuurder vrij de huurprijs bepalen. Vanaf 2007 is gestart met het registeren van deze overeenkomsten en is een inventarisatie gemaakt van lopende overeenkomsten. Dit artikel beschrijft de ontwikkeling van een huurprijsindex voor Vlaanderen en geeft een beeld hiervan over het laatste decennia .","","nl","journal article","","","","","","","","","OTB Research Institute for the Built Environment","OTB Reseach","","","",""
"uuid:8b0b8f77-6655-4bfc-aa14-62687ebb19e1","http://resolver.tudelft.nl/uuid:8b0b8f77-6655-4bfc-aa14-62687ebb19e1","Novel principles in the microbial conversion of nitrogen compounds","Jetten, M.S.M.; Logemann, S.; Muyzer, G.; Robertson, L.A.; De Vries, S.; Van Loosdrecht, M.C.M.; Kuenen, J.G.","","1997","","hydroxylamine anaerobic ammonium oxidation nitrification denitrification periplasmic nitrate reductase nitric-oxide reductase cytochrome-c-oxidase ammonium-oxidizing bacteria 16s ribosomal-rna thiosphaera-pantotropha nitrosomonas-europaea pseudomonas-stut","en","journal article","","","","","","","","","","","","","",""
"uuid:147f0aa6-3146-45a0-86c7-24d6cd8ae2e0","http://resolver.tudelft.nl/uuid:147f0aa6-3146-45a0-86c7-24d6cd8ae2e0","Statistical Approach in Power Cables Diagnostic Data Analysis","Cichecki, P.; Jongen, R.A.; Gulski, E.; Smit, J.J.; Quak, B.; Petzold, F.; De Vries, F.","","2008","","cable insulation; data analysis; partial discharges; statistical analysis","en","journal article","IEEE","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Electrical Sustainable Energy","","","",""
"uuid:22b9bb9b-3356-402f-9cad-685228b16d35","http://resolver.tudelft.nl/uuid:22b9bb9b-3356-402f-9cad-685228b16d35","Meten en verklaren van woningprijsontwikkelingen: Model houdt rekening met economische en psychologische factoren","De Vries, P.","","2011","In theorie reageren vragers en aanbieders direct op nieuwe marktontwikkelingen, met als gevolg dat marktontwikkelingen, met als gevolg dat de prijs verandert. In de praktijk is echter geen sprake van een dergelijke efficient functionerende woningmarkt. Bouwers en ontwikkelaars kunnen immers niet direct woningen op de markt brengen of terugtrekken. Hoe zijn woningprijzen dan goed te meten en te verklaren?","koopwoningen; woningmarkt","nl","journal article","Vuga","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:b15b3ad3-6b98-4b9f-bec8-21c246a0fd5d","http://resolver.tudelft.nl/uuid:b15b3ad3-6b98-4b9f-bec8-21c246a0fd5d","Modelling and Order of Acoustic Transfer Functions Due to Reflections from Augmented Objects","Kuster, M.; De Vries, D.","","2007","It is commonly accepted that the sound reflections from real physical objects are much more complicated than what usually is and can be modelled by room acoustics modelling software. The main reason for this limitation is the level of detail inherent in the physical object in terms of its geometrical and acoustic properties. In the present paper, the complexity of the sound reflections from a corridor wall is investigated by modelling the corresponding acoustic transfer functions at several receiver positions in front of the wall. The complexity for different wall configurations has been examined and the changes have been achieved by altering its acoustic image. The results show that for a homogenous flat wall, the complexity is significant and for a wall including various smaller objects, the complexity is highly dependent on the position of the receiver with respect to the objects.","","en","journal article","Hindawi Publishing Corporation","","","","","","","","Applied Sciences","","","","",""
"uuid:2465da16-bb5f-447d-9acb-64e8e23852ed","http://resolver.tudelft.nl/uuid:2465da16-bb5f-447d-9acb-64e8e23852ed","An Appraisal of Qualifying Role of Hydraulic Heritage Systems: A Case Study of Qanat in the Central Iran","Fasihi Harandi, M.; De Vries, M.J.","","2014","Hydraulic heritage systems, both underground and exposed, have been known to be sustainable for millennia. Persian and also Roman aqueducts are examples of such hydrosystems. Their value is often overlooked but they have undeniable advantages: they have functional interconnectedness with their surrounding society and ecology, which sometimes leads to revitalization plans. By using the notion ‘qualifying role’, this paper will raise questions concerning the disregarded functions and early and historical positions of hydraulic heritage systems. This article illustrates the qualifying role of Qanats in urban drainage by describing the skill in their planning and construction. This is shown by a problematic case study in Iran, where the construction of a drainage system modelled on bygone Qanat techniques resulted in a dramatic drawdown in the water level of the area soon after construction.","aqueduct; hydraulic heritage system; Qanat technology; technological development; underground water supply network","en","journal article","IWA Publishing","","","","","","","2015-07-19","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:fbe2f44d-406d-43cc-a44c-9b0b2c37c81d","http://resolver.tudelft.nl/uuid:fbe2f44d-406d-43cc-a44c-9b0b2c37c81d","The development of a strength grading system for small diameter roundwood","De Vries, P.; Gard, W.F.","","1998","Roundwood as a construction material is becoming more and more interesting to users. Using this wood in construction will increase the value of the material and may open new opportunities for construction design. In order to use round wood for this application, suitable connectors andlor joints have to be developed, but before all, the strength characteristics of roundwood must be determined and grading systems should be established. This investigation deals with the determination of the modulus of elasticity and the bending strength. The wood species concerned are Larch, grown in The Netherlands, and Douglas fir, grown in France, with diameters between 80 mm and 140 mm. The modulus of elasticity is determined by static and dynamic test methods. The data were included in a multiple regression model in order to predict the bending strength. The resulting model is compared with models for sawn timber that are nowadays used in practice.","roundwood; strength grading; testing","en","journal article","Delft University of Technology","","","","","","","","Civil Engineering and Geosciences","Structural and Building Engineering","","","",""
"uuid:b81b8fa3-9107-4931-85af-8fa54f0f8525","http://resolver.tudelft.nl/uuid:b81b8fa3-9107-4931-85af-8fa54f0f8525","Personalization on a peer-to-peer television system","Wang, J.; Pouwelse, J.; Fokker, J.; De Vries, A.P.; Reinders, M.J.T.","","2007","We introduce personalization on Tribler, a peer-to-peer (P2P) television system. Personalization allows users to browse programs much more efficiently according to their taste. It also enables to build social networks that can improve the performance of current P2P systems considerably, by increasing content availability, trust and the realization of proper incentives to exchange content. This paper presents a novel scheme, called BuddyCast, that builds such a social network for a user by exchanging user interest profiles using exploitation and exploration principles. Additionally, we show how the interest of a user in TV programs can be predicted from the zapping behavior by the introduced user-item relevance models, thereby avoiding the explicit rating of TV programs. Further, we present how the social network of a user can be used to realize a truly distributed recommendation of TV programs. Finally, we demonstrate a novel user interface for the personalized peer-to-peer television system that encompasses a personalized tag-based navigation to browse the available distributed content. The user interface also visualizes the social network of a user, thereby increasing community feeling which increases trust amongst users and within available content and creates incentives of to exchange content within the community.","Tribler; BuddyCast; Peer-to-peer (P2P) television system; Personalization; Collaborative filtering; Recommender system","en","journal article","Springer","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Telecommunications","","","",""
"uuid:2f2d917d-19e1-40cc-9cd2-d6153d2dd1c2","http://resolver.tudelft.nl/uuid:2f2d917d-19e1-40cc-9cd2-d6153d2dd1c2","Lichtkloverij: Interview met Prof. dr. L.D.A. Siebbeles","De Vries, G.","","2008","“Waarom leggen we de daken niet vol zonnecellen? Dan is het energieprobleem zo opgelost.” Een aantrekkelijke gedachte, maar nog steeds geen praktijk. Dat komt door hoge productiekosten en een relatief laag rendement. In het Joint Solar Programme van FOM wordt gewerkt aan materialen die een groter deel van het erop vallende licht omzetten in elektrische energie.","","nl","journal article","Delft University of Technology","","","","","","","","Applied Sciences","ChemE/Chemical Engineering","","","",""
"uuid:b69bc487-338e-4951-b1f7-3c73dcfd9045","http://resolver.tudelft.nl/uuid:b69bc487-338e-4951-b1f7-3c73dcfd9045","Uncertainty from Model Calibration: Applying a New Method to Transport Energy Demand Modelling","Ruijven, B.; Van der Sluijs, J.P.; Van Vuuren, D.P.; Janssen, P.; Heuberger, P.S.C.; De Vries, B.","","2009","Uncertainties in energy demand modelling originate from both limited understanding of the real-world system and a lack of data for model development, calibration and validation. These uncertainties allow for the development of different models, but also leave room for different calibrations of a single model. Here, an automated model calibration procedure was developed and tested for transport sector energy use modelling in the TIMER 2.0 global energy model. This model describes energy use on the basis of activity levels, structural change and autonomous and priceinduced energy efficiency improvements. We found that the model could reasonably reproduce historic data under different sets of parameter values, leading to different projections of future energy demand levels. Projected energy use for 2030 shows a range of 44–95% around the best-fit projection. Two different model interpretations of the past can generally be distinguished: (1) high useful energy intensity and major energy efficiency improvements or (2) low useful energy intensity and little efficiency improvement. Generally, the first lead to higher future energy demand levels than the second, but model and insights do not provide decisive arguments to attribute a higher likelihood to one of the alternatives.","Model calibration; Uncertainty; Global energy model; Transport energy use","en","journal article","Springer","","","","","","","","Mechanical, Maritime and Materials Engineering","Delft Center for Systems and Control","","","",""
"uuid:cd337eab-3330-4005-8006-b0c5d6b1d99b","http://resolver.tudelft.nl/uuid:cd337eab-3330-4005-8006-b0c5d6b1d99b","Reliability and effectiveness of clickthrough data for automatic image annotation","Tsikrika, T.; Diou, C.; De Vries, A.P.; Delopoulos, A.","","2010","Automatic image annotation using supervised learning is performed by concept classifiers trained on labelled example images. This work proposes the use of clickthrough data collected from search logs as a source for the automatic generation of concept training data, thus avoiding the expensive manual annotation effort. We investigate and evaluate this approach using a collection of 97,628 photographic images. The results indicate that the contribution of search log based training data is positive despite their inherent noise; in particular, the combination of manual and automatically generated training data outperforms the use of manual data alone. It is therefore possible to use clickthrough data to perform large-scale image annotation with little manual annotation effort or, depending on performance, using only the automatically generated training data. An extensive presentation of the experimental results and the accompanying data can be accessed at http://olympus.ee.auth.gr/~diou/civr2009/.","image annotation; concepts; supervised learning; search logs; clickthrough data; collective knowledge; implicit feedback; reliability","en","journal article","Springer","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Intelligent Systems","","","",""
"uuid:d5088f60-7336-4d44-af84-4dfa3e10fd75","http://resolver.tudelft.nl/uuid:d5088f60-7336-4d44-af84-4dfa3e10fd75","Simulating producer behavior in congested electricity systems","Van Blijswijk, M.J.; Chappin, E.J.L.; De Vries, L.J.","","2012","Congestion management in liberalized power sectors is a complex multi-actor problem, where technical, economic, social, regulatory, and political aspects all play a role. This paper presents a participatory simulation tool that can be used to evaluate congestion management mechanisms. It was developed to facilitate research related to strategic bidding under congestion and to support education on congestion management. Also, it was developed for the more fundamental purpose to explore the possibilities that social simulation provides for understanding complex behavior in congested power systems. The tool has proven its educational use for four different audiences: energy company managers, students, scientists, and employees of a network operator.","participatory simulation; electricity transmission; congestion management","en","journal article","University of Salzburg","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:6618bc31-46f4-4406-8e20-6867e9a90a4d","http://resolver.tudelft.nl/uuid:6618bc31-46f4-4406-8e20-6867e9a90a4d","A house price index based on the SPAR method","De Vries, P.; De Haan, J.; Mariën, A.A.A.; Van der Wal, E.","","2009","Within the European Union there has been a push to provide European governments and the European Central Bank with the statistics they need for monitoring the owneroccupied sector. This paper reports on the results of a project to develop a house price index for the Netherlands. From January 2008, Kadaster, the Dutch land registry office, and Statistics Netherlands began jointly publishing house price index numbers for the whole country and for some specific dwelling types and regions. A number of special institutional features of the situation in the Netherlands contributed to the choice of index construction method. The indexes are computed using the Sale Price Appraisal Ratio (SPAR) method, which utilizes the ratios of transaction prices and previous appraisal values. We describe the SPAR method, compare it with repeat sales methods and assess the reliability of the official Dutch appraisal values. Empirical results for January 1995 – March 2009 are presented. The SPAR method performs well compared to repeat sales, and the results reported will be of interest to other countries that have, or could instigate, institutional arrangements similar to those in the Netherlands.","Appraisal Value; House Price Index; Repeat Sales; SPAR method","en","journal article","","","","","","","","","OTB Research Institute","Housing Systems","","","",""
"uuid:32cfe5cb-806c-4ed6-9a21-8c154ca96f73","http://resolver.tudelft.nl/uuid:32cfe5cb-806c-4ed6-9a21-8c154ca96f73","Blij met een hogere WOZ-waarde","De Vries, P.","","2011","De woningmarkt zit in de lift. Maar hoe realistisch is een WOZ-waarde eigenlijk?","woningmarkt; WOZ-waarde","nl","journal article","VBO Makelaar","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:401c17f3-bc67-433a-ace0-7e24bfe6df89","http://resolver.tudelft.nl/uuid:401c17f3-bc67-433a-ace0-7e24bfe6df89","Experimental and molecular dynamics characterization of dense microemulsion systems: Morphology, conductivity and SAXS","Negro, E.; Latsuzbaia, R.; De Vries, A.H.; Koper, G.J.M.","","2014","Microemulsions are exciting systems that are promising as tuneable self-assembling templating reaction vessels at the nanoscale. Determination of the nano-structure of microemulsions is, however, not trivial, and there are fundamental questions regarding their design. We were able to reproduce experimental data for an important microemulsion system, sodium-AOT–n-heptane–water, using coarse-grained simulations involving relatively limited computational costs. The simulation allows visualization and deeper investigation of controversial phenomena such as bicontinuity and ion mobility. Simulations were performed using the Martini coarse-grained force field. AOT bonded parameters were fine-tuned by matching the geometry obtained from atomistic simulations. We investigated several compositions with a constant ratio of surfactant to oil while the water content was varied from 10 to 60% in weight. From mean square displacement calculation of all species, it was possible to quantify caging effects and ion mobility. Average diffusion coefficients were calculated for all charged species and trends in the diffusion coefficients were used to rationalize experimental conductivity data. Especially, the diffusion coefficient of charged species qualitatively matched the variation in conductivity as a function of water content. The scattering function was calculated for the hydrophilic species and up to 40% water content quantitatively matched the experimental data obtained from small angle X-ray scattering measurements. For higher water contents, discrepancies were observed and attributed to a nearby phase separation. In particular, bicontinuity of water and oil was computationally visualized by plotting the coordinates of hydrophilic beads. Equilibrated coarse-grained simulations were reversed to atomistic models in order both to compare ion mobility and to catch finer simulation details. Especially, it was possible to capture the intimate ion pair interaction between the sodium ion and the surfactant head group.","Gold for Gold; Open Access","en","journal article","RSC Publishing","","","","","","","","Applied Sciences","ChemE/Chemical Engineering","","","",""
"uuid:a630f41e-bdc7-44d8-aba4-393471f8a162","http://resolver.tudelft.nl/uuid:a630f41e-bdc7-44d8-aba4-393471f8a162","Extraction of 3D Information from Circular Array Measurements for Auralization with Wave Field Synthesis","De Vries, D.; Hörchens, L.; Grond, P.","","2007","The state of the art of wave field synthesis (WFS) systems is that they can reproduce sound sources and secondary (mirror image) sources with natural spaciousness in a horizontal plane, and thus perform satisfactory 2D auralization of an enclosed space, based on multitrace impulse response data measured or simulated along a 2D microphone array. However, waves propagating with a nonzero elevation angle are also reproduced in the horizontal plane, which is neither physically nor perceptually correct. In most listening environments to be auralized, the floor is highly absorptive since it is covered with upholstered seats, occupied during performances by a well-dressed audience. A first-order ceiling reflection, reaching the floor directly or via a wall, will be severely damped and will not play a significant role in the room response anymore. This means that a spatially correct WFS reproduction of first-order ceiling reflections, by means of a loudspeaker array at the ceiling of the auralization reproduction room, is necessary and probably sufficient to create the desired 3D spatial perception. To determine the driving signals for the loudspeakers in the ceiling array, it is necessary to identify the relevant ceiling reflection(s) in the multichannel impulse response data and separate those events from the data set. Two methods are examined to identify, separate, and reproduce the relevant reflections: application of the Radon transform, and decomposition of the data into cylindrical harmonics. Application to synthesized and measured data shows that both methods in principle are able to identify, separate, and reproduce the relevant events.","","en","journal article","Hindawi Publishing Corporation","","","","","","","","Applied Sciences","","","","",""
"uuid:5a543910-5910-46d7-a0f2-9b67ed496e8f","http://resolver.tudelft.nl/uuid:5a543910-5910-46d7-a0f2-9b67ed496e8f","Concurrentiepositie koopgarant","De Vries, P.","","2011","Het woord koopgarant is een combinatie van koop en garant. Koop staat voor 'koopwoning' en garant staat voor 'de zekerheid dat iets een succes wordt'. Maar is Koopgarant een succes? De laatste tijd hoor ik versclullende geluiden. Makelaars zijn kritisch en zeggen hardop dat het grote aanbod van Koopgarant de concurrentiepositie van de vrijemarktwoning negatief beïnvloedt terwijl projectontwikkelaars gunstige woningmarkteffecten verwachten van het aanbod van nieuwbouw Koopgarant.","","nl","journal article","","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:3b26dbb7-7fd0-4fb0-8b72-ff0b9911855e","http://resolver.tudelft.nl/uuid:3b26dbb7-7fd0-4fb0-8b72-ff0b9911855e","Cross-border electricity market effects due to price caps in an emission trading system: An agent-based approach","Richstein, J.C.; Chappin, E.J.L.; De Vries, L.J.","","2014","The recent low CO2 prices in the European Union Emission Trading Scheme (EU ETS) have triggered a discussion whether the EU ETS needs to be adjusted. We study the effects of CO2 price floors and a price ceiling on the dynamic investment pathway of two interlinked electricity markets (loosely based on Great Britain, which already has introduced a price floor, and on Central Western Europe). Using an agent-based electricity market simulation with endogenous investment and a CO2 market (including banking), we analyse the cross-border effects of national policies as well as system-wide policy options. A common, moderate CO2 auction reserve price results in a more continuous decarbonisation pathway. This reduces CO2 price volatility and the occurrence of carbon shortage price periods, as well as the average cost to consumers. A price ceiling can shield consumers from extreme price shocks. These price restrictions do not cause a large risk of an overall emissions overshoot in the long run. A national price floor lowers the cost to consumers in the other zone; the larger the zone with the price floor, the stronger the effect. Price floors that are too high lead to inefficiencies in investment choices and to higher consumer costs.","EU-ETS; CO2 price caps; agent-based modelling","en","journal article","Elsevier","","","","","","","","Technology, Policy and Management","Engineering, Systems and Services","","","",""
"uuid:6021769a-4f1a-4ec4-96ca-c8a88dc7d200","http://resolver.tudelft.nl/uuid:6021769a-4f1a-4ec4-96ca-c8a88dc7d200","Atlas of INSPIRE: Evaluating SDI Development through an Inventory of INSPIRE Experiences of European National Mapping Agencies","De Vries, W.T.; Crompvoets, J.; Stoter, J.; VandenBerghe, I.","","2011","The paper describes how practice of INSPIRE implementation are affecting Spatial Data Infrastructure (SDI) development. It contains the results of a EuroSDR (European Spatial Data Research) project ‘Atlas of INSPIRE implementation methods’. Aim of the project was to make an inventory of experiences when implementing INSPIRE, in order to share exemplary practices and solutions among national mapping agencies and national INSPIRE contact points. This inventory formed the basis for the generation of the prototype Atlas for all national mapping agencies, policy makers and other stakeholders who have to implement INSPIRE. For SDI research the Atlas provides empirical base material for the conceptualization of SDI implementation approaches. The analytical framework to look at INSPIRE implementation drew on two theoretical notions of how implementation actions can lead to information infrastructure development: a cultivation approach and a design approach. A qualitative data collection process, through a survey and two workshops, tested the extent to which either of the two approaches were prevalent for the INSPIRE implementation. The survey and the workshops provided primary data on INSPIRE implementation experiences of representatives from twelve European countries (Belgium, Bulgaria, Croatia, Cyprus, France, Germany, Netherlands, Poland Slovakia, Sweden, Switzerland, United Kingdom). Comparing the national experiences showed that both types of approaches of INSPIRE implementation are present the EU countries. The cultivation approach is more prevalent in countries which established SDI organizational structures outside the NMAs, and the design approach is more prevalent in countries relying solely on NMAs for INSPIRE implementation. Embedding INSPIRE implementation in national SDI activities seems furthermore to relate to cultivation approaches, consisting of a gradually flatter inter-organizational working relations, and a scaling up strategy which iteratively links the (supra)national implementation plans of INSPIRE to the local implementation plans in national and sub national organizations, and vice versa. The variety in approaches imply that a uniform, best practice, INSPIRE implementation approach for all countries does exist, but that the choices for certain practices strongly relate to the local contextual conditions and windows of opportunities. The implication of these findings for research in SDI development is that more emphasis should be placed on the mechanism of interaction between the slowly changing socio-organizational context and rapidly technologies.","INSPIRE; SDI; information infrastructure theory; cultivation; design","en","journal article","European Commission Joint Research Centre","","","","","","","","OTB Research Institute for the Built Environment","Built Environment","","","",""
"uuid:3dfa9b4c-9a8a-41c3-957d-a47cd3596645","http://resolver.tudelft.nl/uuid:3dfa9b4c-9a8a-41c3-957d-a47cd3596645","The impact of microgeneration upon the Dutch balancing market","Van der Veen, R.A.C.; De Vries, L.J.","","2009","The share of microgeneration (power generation at the level of households and small businesses) in the Dutch electricity system continues to grow. Over time, this development may pose a threat to the reliability and efficiency of the Dutch electricity balancing market. We investigated possible changes to the design of the Dutch balancing market that can maintain or even improve upon its current operational performance level. The first step of the research was an analysis of the existing Dutch balancing market. It consists of three main instruments: programme responsibility, the single buyer market for regulating and reserve power (RRP), and imbalance settlement. The balancing market currently functions satisfactorily. Subsequently, the effects of large-scale development of microgeneration in the Netherlands were evaluated with a qualitative scenario analysis. Four microgeneration scenarios and two methods for allocating the household electricity consumption and generation were considered. The four scenarios concerned large-scale penetration of PV, heat-led micro CHP, electricity-led micro CHP operated by the household consumer, and electricity-led micro CHP operated by the supply company. The last scenario was found to have the strongest positive net effect. Finally, six design options were identified for improving the Dutch balancing market design in case the share of microgeneration would increase substantially. Of these six options, adjusting the profile methodology and the regulation of smart meters are no-regret options that can be implemented immediately. The attractiveness of the other options depends upon the microgeneration portfolio that emerges, the manageability of large metering data flows, and the nature of the technical effects of large-scale microgeneration penetration.","balancing market; microgeneration; market design","en","journal article","Elsevier","","","","","","","","Technology, Policy and Management","","","","",""
"uuid:7ee45a22-ad73-4cf8-8b7a-2fefdcdbfcf2","http://resolver.tudelft.nl/uuid:7ee45a22-ad73-4cf8-8b7a-2fefdcdbfcf2","Characterization of the RnfB and RnfG Subunits of the Rnf Complex from the Archaeon Methanosarcina acetivorans","Suharti, S.; Wang, M.; De Vries, S.; Ferry, J.G.","","2014","Rnf complexes are redox-driven ion pumps identified in diverse species from the domains Bacteria and Archaea, biochemical characterizations of which are reported for two species from the domain Bacteria. Here, we present characterizations of the redox-active subunits RnfG and RnfB from the Rnf complex of Methanosarcina acetivorans, an acetate-utilizing methane-producing species from the domain Archaea. The purified RnfG subunit produced in Escherichia coli fluoresced in SDS-PAGE gels under UV illumination and showed a UV-visible spectrum typical of flavoproteins. The Thr166Gly variant of RnfG was colorless and failed to fluoresce under UV illumination confirming a role for Thr166 in binding FMN. Redox titration of holo-RnfG revealed a midpoint potential of ?129 mV for FMN with n = 2. The overproduced RnfG was primarily localized to the membrane of E. coli and the sequence contained a transmembrane helix. A topological analysis combining reporter protein fusion and computer predictions indicated that the C-terminal domain containing FMN is located on the outer aspect of the cytoplasmic membrane. The purified RnfB subunit produced in E. coli showed a UV-visible spectrum typical of iron-sulfur proteins. The EPR spectra of reduced RnfB featured a broad spectral shape with g values (2.06, 1.94, 1.90, 1.88) characteristic of magnetically coupled 3Fe-4S and 4Fe-4S clusters in close agreement with the iron and acid-labile sulfur content. The ferredoxin specific to the aceticlastic pathway served as an electron donor to RnfB suggesting this subunit is the entry point of electrons to the Rnf complex. The results advance an understanding of the organization and biochemical properties of the Rnf complex and lay a foundation for further understanding the overall mechanism in the pathway of methane formation from acetate.","","en","journal article","Public Library of Science","","","","","","","","Applied Sciences","BT/Biotechnology","","","",""
"uuid:bb7159b8-83e7-464a-9d5a-04f2ca9e4c0c","http://resolver.tudelft.nl/uuid:bb7159b8-83e7-464a-9d5a-04f2ca9e4c0c","Models as artefacts of a dual nature: A philosophical contribution to teaching about models designed and used in engineering practice","Ghaemi Nia, M.M.; De Vries, M.J.","","2016","Although ‘models’ play a significant role in engineering activities, not much has yet been developed to enhance the technological literacy of students in this regard. This contribution intends to help fill this gap and deliver a comprehensive account as to the nature and various properties of these engineering tools. It begins by inspecting two well-known cases: the long-term policy documents of technological literacy in the USA and in New Zealand. This will help to clarify the approach of these educational documents to models, provide a primary understanding of their existing drawbacks in this relation, and realize the necessity of underpinning a well-organized account that can be used in teaching about models. Next, the discussion moves toward an attempt to develop a sound description of the nature of models. This is accomplished through an extensive review of the viewpoints of philosophers (of science and technology) about the nature and properties of these tools; models will then be argued and suggested for consideration as techno-scientific artefacts with their own dual nature: the intrinsic and the intentional. Such an account paves the way to the next step, which namely attempts to provide a well-ordered framework of the models’ various properties, through taking up those two natures and their interrelation in detail. The paper concludes by showing some initial advantages of applying the suggested approach to the intended cases, which can hopefully lead to further, more detailed inspections and extended contributions.","technological literacy; artefactual nature of models; dual nature of models; intrinsic nature of models; intentional nature of models","en","journal article","Springer","","","","","","","","Applied Sciences","","","","",""
"uuid:2223f7f2-c62e-46a0-bd6b-44206ec0f4e2","http://resolver.tudelft.nl/uuid:2223f7f2-c62e-46a0-bd6b-44206ec0f4e2","Woningprijs blijft langdurig onder evenwichtsniveau","De Vries, P.","","2011","","","nl","journal article","","","","","","","","","OTB Research Institute for the Built Environment","OTB Reseach","","","",""
"uuid:6425bc13-0337-4c75-9334-efac97477aa4","http://resolver.tudelft.nl/uuid:6425bc13-0337-4c75-9334-efac97477aa4","Social Media to Foster Self-Organized Participatory Learning for Disengaged Learners","De Vries, P.; Hennis, T.A.","","2013","The reAct project described in this paper is an innovative learning approach developed and used to remotivate the disengaged from education and learning to connect to lifelong learning practices. These youngsters constitute a considerable social problem in Europe and the aim of the project is to find ways to recover the intrinsic motivation to learn and thereby improve the opportunities for participation. Key in this innovative strategy is selforganized learning, the learner in control of the learning process. The paper starts with an introduction on the challenge these dropouts pose to the society at large and the learning strategy developed to cope with this matter. The usage of media in the methodology is crucial and links to the concept of a user-configurable Personal Learning Environment (PLE). The main research issues are: can reAct change the attitude, what are the benefits and drawbacks of this self-organized learning approach and do the ICT tools support these processes. This paper covers the first half of the project and reflects on the first rather positive experiences.","disengaged learners; drop outs; social media; self-organized learning; reAct project; participatory design","en","journal article","International Association of Online Engineering (IAOE)","","","","","","","","Technology, Policy and Management","Infrastructures, Systems and Services","","","",""
"uuid:e2bce270-0965-4b71-943d-193588770c63","http://resolver.tudelft.nl/uuid:e2bce270-0965-4b71-943d-193588770c63","Die Elektronentunnelraten im Atmungskettenkomplex I sind auf eine effiziente Energiewandlung abgestimmt","De Vries, S.; Dörner, K.; Strampraad, M.J.F.; Friedrich, T.","","2015","Der Atmungskettenkomplex I wandelt die freie Energie, die bei der Reduktion von Ubichinon durch NADH frei wird, in einen Protonengradienten über die Membran um. Die biologische Redoxreaktion wird von einem Flavinmononukleotid und einer Kette von sieben Eisen-Schwefel-Zentren katalysiert. Die Elektronentransfergeschwindigkeiten zwischen den Zentren wurden über eine schnelle Freeze-Quench“-Methode und Analyse der Proben mittels EPR- und UV/Vis-Spektroskopie bestimmt. Der Komplex I oxidiert sehr schnell drei Moleküle NADH; dabei hängt die Elektronentunnelrate zwischen den beiden Zentren der Kette mit dem grçßten Abstand zueinander vom Redoxzustand des distalen Zentrums N2 ab. Diese Geschwindigkeit ist sechsmal geringer, wenn N2 im reduzierten Zustand vorliegt. Die konformativen Änderungen, die mit der Reduktion des Zentrums N2 einhergehen, verlangsamen die elektronische Kopplung des längsten Transferschritts. Die Kette der Eisen-Schwefel-Zentren ist somit nicht einfach ein Draht für den Elektronentransfer, sondern sie passt die Elektronentunnelraten der Zeitskala der konformativen Bewegungen an, die für die Protonentranslokation bençtigt werden. Die Synchronisierung von Geschwindigkeiten ist ein generelles Prinzip, um die Spezifität enzymatischer Reaktionen zu erhçhen.","Bioenergetik; Elektronentunneln; Enzymkinetik; Metalloenzyme; Reaktionsmechanismen","de","journal article","Wiley","","","","","","","","Applied Sciences","BT/Biotechnology","","","",""
"uuid:19ed7e4e-b49a-4f9d-bdac-35fa9853c088","http://resolver.tudelft.nl/uuid:19ed7e4e-b49a-4f9d-bdac-35fa9853c088","Competition between the Facultatively Chemolithotrophic Thiobacillus-A2, an Obligately Chemolithotrophic Thiobacillus and a Heterotrophic Spirillum for Inorganic and Organic Substrates","Gottschal, J.C.; De Vries, S.; Kuenen, J.G.","","1979","","","en","journal article","","","","","","","","","","","","","",""
"uuid:5f7fa7a0-326b-40b6-a87f-e3d2a0b634d6","http://resolver.tudelft.nl/uuid:5f7fa7a0-326b-40b6-a87f-e3d2a0b634d6","How the House Price Ripples over the Netherlands","De Vries, P.","","2010","","","nl","journal article","","","","","","","","","OTB Research Institute","OTB onderzoek","","","",""
"uuid:f45fe170-f5ad-4798-997f-6b26819d275f","http://resolver.tudelft.nl/uuid:f45fe170-f5ad-4798-997f-6b26819d275f","Efficient single particle detection with a superconducting nanowire","Azzouz, H.; Dorenbos, S.N.; De Vries, D.; Bermudez Urena, E.; Zwiller, V.","","2012","Detection of ?- and ?-particles is of paramount importance in a wide range of applications. Current particle detectors are all macroscopic and have limited time resolution. We demonstrate a nanoscale particle detector with a small detection volume, high detection efficiency, short dead times and low dark count levels. We measure ?- and ?-particle detection efficiencies close to unity using different sources and also demonstrate blindness towards ?-rays. Our nanoscale detector offers particle detection measurements with unprecendented spatial resolution.","alpha-particle detection; beta-ray detection; particle detectors","en","journal article","American Institute of Physics","","","","","","","","Applied Sciences","Quantum Nanoscience","","","",""
"uuid:9e21b29e-928d-4a0e-98f3-aa5c96c64baf","http://resolver.tudelft.nl/uuid:9e21b29e-928d-4a0e-98f3-aa5c96c64baf","Engineering acetyl coenzyme A supply: Functional expression of a bacterial pyruvate dehydrogenase complex in the cytosol of Saccharomyces cerevisiae","Kozak, B.U.; Van Rossum, M.H.; Luttik, M.A.; Akeroyd, M.; Benjamin, K.R.; Wu, L.; De Vries, S.; Daran, J.M.; Pronk, J.T.; Van Maris, A.J.A.","","2014","The energetic (ATP) cost of biochemical pathways critically determines the maximum yield of metabolites of vital or commercial relevance. Cytosolic acetyl coenzyme A (acetyl-CoA) is a key precursor for biosynthesis in eukaryotes and for many industrially relevant product pathways that have been introduced into Saccharomyces cerevisiae, such as isoprenoids or lipids. In this yeast, synthesis of cytosolic acetyl-CoA via acetyl-CoA synthetase (ACS) involves hydrolysis of ATP to AMP and pyrophosphate. Here, we demonstrate that expression and assembly in the yeast cytosol of an ATP-independent pyruvate dehydrogenase complex (PDH) from Enterococcus faecalis can fully replace the ACS-dependent pathway for cytosolic acetyl-CoA synthesis. In vivo activity of E. faecalis PDH required simultaneous expression of E. faecalis genes encoding its E1?, E1?, E2, and E3 subunits, as well as genes involved in lipoylation of E2, and addition of lipoate to growth media. A strain lacking ACS that expressed these E. faecalis genes grew at near-wild-type rates on glucose synthetic medium supplemented with lipoate, under aerobic and anaerobic conditions. A physiological comparison of the engineered strain and an isogenic Acs(+) reference strain showed small differences in biomass yields and metabolic fluxes. Cellular fractionation and gel filtration studies revealed that the E. faecalis PDH subunits were assembled in the yeast cytosol, with a subunit ratio and enzyme activity similar to values reported for PDH purified from E. faecalis. This study indicates that cytosolic expression and assembly of PDH in eukaryotic industrial microorganisms is a promising option for minimizing the energy costs of precursor supply in acetyl-CoA-dependent product pathways. Importance: Genetically engineered microorganisms are intensively investigated and applied for production of biofuels and chemicals from renewable sugars. To make such processes economically and environmentally sustainable, the energy (ATP) costs for product formation from sugar must be minimized. Here, we focus on an important ATP-requiring process in baker's yeast (Saccharomyces cerevisiae): synthesis of cytosolic acetyl coenzyme A, a key precursor for many industrially important products, ranging from biofuels to fragrances. We demonstrate that pyruvate dehydrogenase from the bacterium Enterococcus faecalis, a huge enzyme complex with a size similar to that of a ribosome, can be functionally expressed and assembled in the cytosol of baker's yeast. Moreover, we show that this ATP-independent mechanism for cytosolic acetyl-CoA synthesis can entirely replace the ATP-costly native yeast pathway. This work provides metabolic engineers with a new option to optimize the performance of baker's yeast as a ""cell factory"" for sustainable production of fuels and chemicals.","","en","journal article","American Society for Microbiology: mBio","","","","","","","","Applied Sciences","BT/Biotechnology","","","",""
"uuid:5c6faee0-63c4-4724-bfe9-3f114b6bfd90","http://resolver.tudelft.nl/uuid:5c6faee0-63c4-4724-bfe9-3f114b6bfd90","Adjusting the CO2 cap to subsidised RES generation: Can CO2 prices be decoupled from renewable policy?","Richstein, J.C.; Chappin, E.J.L.; De Vries, L.J.","","2015","The low prices in the European Emission Trading System (EU ETS) have triggered discussions of various possible reforms. One option is to decouple the CO 2 prices from renewable energy policy by adjusting the emission cap to renewable energy investment overshoots. We introduce two ways of reducing the CO 2 cap in response to overshoots of renewable policy investment over previously announced targets. We investigate these options with the agent-based model EMLab-generation. We find that both policy implementations are successful in restoring prices. They also ensure that making public investments that exceed policy targets contribute to carbon emission reduction, and that renewable policy does not benefit the most emission-intensive power plants. However, neither policy is suitable for achieving specifc levels of prices or price volatility.","EU-ETS; carbon market; renewable policy; dynamic cap adjustment; agent-based modelling; electricity Market","en","journal article","Elsevier","","","","","","","2017-10-16","Technology, Policy and Management","Engineering Systems and Services","","","",""
"uuid:996c569c-b2b7-4f75-9a15-7d41143fed65","http://resolver.tudelft.nl/uuid:996c569c-b2b7-4f75-9a15-7d41143fed65","Incidence, treatment, and case-fatality of non-traumatic subarachnoid haemorrhage in the Netherlands","Risselada, R.; De Vries, L.M.; Dippel, D.W.J.; Van Kooten, F.; Van der Lugt, A.; Niessen, W.J.; Firouzian, A.; Stricker, B.H.C.; Sturkenboom, M.C.J.M.","","2011","Background Non-traumatic subarachnoid haemorrhage (SAH) is a devastating disorder and in the majority of cases it is caused by rupture of an intracranial aneurysm. No actual data are available on the incidence of non-traumatic SAH and aneursymal SAH (aSAH) in the Netherlands and little is known about treatment patterns of aSAH. Our purpose was therefore to assess the incidence, treatment patterns, and case-fatality of non-traumatic (a)SAH within the Dutch general population. Methods Two population based data sources were used for this retrospective cohort study. One was the nationwide hospital discharge registry (National Medical Registration, LMR). Cases were patients hospitalized for SAH (ICD-9-code 430) in 2001–2005. The second source was the Integrated Primary Care Information (IPCI) database, a medical record database allowing for case validation. Cases were patients with validated non-traumatic (a)SAH in 1996–2006. Incidence, treatment, and case-fatality were assessed. Results The incidence rate (IR) of non-traumatic SAH was 7.12 per 100,000 PY (95%CI: 6.94–7.31) and increased with age. The IR of aSAH was 3.78 (95%CI: 2.98–4.72). Women had a twofold increased risk of non-traumatic SAH; this difference appeared after the fourth decade. Non-traumatic SAH fatality was 30% (95%CI: 29–31%). Of aSAH patients 64% (95%CI: 53–74%) were treated with a clipping procedure, and 26% (95%CI: 17–37%) with coiling. Conclusion Non-traumatic SAH is a rare disease with substantial case-fatality; rates in the Netherlands are similar to other countries. Case-fatality is also similar as well as age and sex patterns in incidence.","non-traumatic subarachnoid haemorrhage; incidence; case-fatality","en","journal article","Elsevier","","","","","","","","Applied Sciences","IST/Imaging Science and Technology","","","",""
"uuid:28fc9456-132a-464a-ad42-08054c5bce1f","http://resolver.tudelft.nl/uuid:28fc9456-132a-464a-ad42-08054c5bce1f","A coordination mechanism for reducing price spikes in distribution grids","Chakraborty, S.T. (TU Delft Energie and Industrie); Verzijlbergh, R.A. (TU Delft Energie and Industrie); Baker, Kyri (University of Colorado); Cvetkovic, M. (TU Delft Intelligent Electrical Power Grids); De Vries, Laurens (TU Delft Energie and Industrie); Lukszo, Z. (TU Delft Energie and Industrie)","","2020","Recently, given the increased integration of renewables and growing uncertainty in demand, the wholesale market price has become highly volatile. Energy communities connected to the main electricity grid may be exposed to this increasing price volatility. Additionally, they may also be exposed to local network congestions, resulting in price spikes. Motivated by this problem, in this paper, we present a coordination mechanism between entities at the distribution grid to reduce price volatility. The mechanism relies on the concept of duality theory in mathematical programming through which explicit constraints can be imposed on the local electricity price. Constraining the dual variable related to price enables the quantification of the demand-side flexibility required to guarantee a certain price limit. We illustrate our approach with a case study of a congested distribution grid and an energy storage system as the source of the required demand-side flexibility. Through detailed simulations, we determine the optimal size and operation of the storage system required to constrain prices. An economic evaluation of the case study shows that the business case for providing the contracted flexibility with the storage system depends strongly on the chosen price limit.","Demand-side flexibility; Distribution grid; Duality theory; Price volatility","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:2cb53aea-8275-42ca-a637-74af16299576","http://resolver.tudelft.nl/uuid:2cb53aea-8275-42ca-a637-74af16299576","Electrical TCAD Study of the Low-Voltage Avalanche-Mode Superjunction LED","Hueting, R. J.E. (University of Twente); De Vries, H. (University of Twente); Dutta, S. (TU Delft Dynamics of Micro and Nano Systems); Annema, A. J. (University of Twente)","","2021","The CMOS silicon avalanche-mode light-emitting diode (AMLED) has emerged as a potential light source for monolithic optical interconnects. Earlier we presented a superjunction light-emitting diode (SJLED) that offers a higher electroluminescent intensity compared to a conventional AMLED because of its more uniform field distribution. However, for reducing power consumption low-voltage ( \leq 15\text{V} ) SJLEDs are desired, not explored before. In this work we present a TCAD simulation feasibility study of the low-voltage SJLED for various doping concentrations and device dimensions. The results show that for obtaining a constant field, approximately a tenfold more aggressive charge balance condition in the SJLED is estimated than traditionally reported. This is important for establishing a guideline to realize optimized RESURF and SJLEDs in the ever-shrinking advanced CMOS nodes.","Avalanche breakdown; diode; light-emitting diode (LED); power; silicon","en","journal article","","","","","","Accepted Author Manuscript","","","","","Dynamics of Micro and Nano Systems","","",""
"uuid:87d25d1d-ccdf-478f-b664-cb539da4f1d1","http://resolver.tudelft.nl/uuid:87d25d1d-ccdf-478f-b664-cb539da4f1d1","The effectiveness of a strategic reserve in the presence of a high portfolio share of renewable energy sources","Bhagwat, P.C. (TU Delft Energie and Industrie); Richstein, J.C. (TU Delft Energie and Industrie); Chappin, E.J.L. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie)","","2016","To ensure sufficient investment in electricity generation capacity, mechanisms such as strategic reserves are being considered or already implemented. We analyze the effectiveness of a strategic reserve in the presence of a growing portfolio share of renewable energy sources (RES) with EMLab-Generation, an agent-based electricity market model. A strategic reserve can stabilize investment, but within limits. Uncertainty regarding future demand may cause the market to become instable, potentially leading to periods with very high electricity prices. In the presence of a large share of variable renewable energy sources, the reserve design should be adjusted or replaced by an alternative capacity mechanism.","Agent-based modeling; Capacity mechanisms; Strategic reserve","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:6953bba6-2b76-4d42-b4b1-e0c9c237b739","http://resolver.tudelft.nl/uuid:6953bba6-2b76-4d42-b4b1-e0c9c237b739","Standing up slowly antagonises initial blood pressure decrease in older adults with orthostatic hypotension","de Bruijne, E.S. (Amsterdam UMC; Amstelland Hospital); Reijnierse, E.M. (Amsterdam UMC); Trappenburg, M.C. (Amsterdam UMC; Amstelland Hospital); Pasma, J.H. (TU Delft Biomechatronics & Human-Machine Control); De Vries, Oscar J. (OLVG Hospital); Meskers, Carel G M (Amsterdam UMC); Maier, Andrea B. (University of Melbourne; Vrije Universiteit Amsterdam)","","2017","Background: Orthostatic hypotension (OH) is common in older adults and associated with increased morbidity and mortality, loss of independence and high health-care costs. Standing up slowly is a recommended non-pharmacological intervention. However, the effectiveness of this advice has not been well studied. Objectives: The aim of this study was to investigate whether standing up slowly antagonises posture-related blood pressure (BP) decrease in a clinically relevant population of geriatric outpatients. Methods: In this cross-sectional study, 24 community-dwelling older adults referred to a geriatric outpatient clinic and diagnosed with OH were included. BP was measured continuously during 3 consecutive transitions from supine to standing position during normal, slow and fast transition. Results: The relative BP decrease at 0-15 s after slow transition was significantly lower than after normal transition (p = 0.003 for both systolic BP and diastolic BP) and fast transition (p = 0.045 for systolic BP; diastolic BP: non-significant). The relative diastolic BP decrease at 60-180 s after normal transition was significantly lower than after fast transition (p = 0.029). Conclusion: Standing up slowly antagonises BP decrease predominantly during the first 15 s of standing up in a clinically relevant population of geriatric outpatients diagnosed with OH. Results support the non-pharmacological intervention in clinical practice to counteract OH.","Blood pressure; Continuously measured blood pressure; Older adults; Orthostatic hypotension; Stance; Standing up slowly","en","journal article","","","","","","Accepted Author Manuscript","","2017-10-19","","","Biomechatronics & Human-Machine Control","","",""
"uuid:c48cedb1-24d7-470f-9746-6e829de493f5","http://resolver.tudelft.nl/uuid:c48cedb1-24d7-470f-9746-6e829de493f5","Cross-border effects of capacity mechanisms in interconnected power systems","Bhagwat, P.C. (TU Delft Energie and Industrie; European University Institute); Richstein, J.C. (TU Delft Energie and Industrie; Deutsches Institut für Wirtschaftsforschung); Chappin, E.J.L. (TU Delft Energie and Industrie); Iychettira, K.K. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie)","","2017","The cross-border effects of a capacity market and a strategic reserve in interconnected electricity markets are modeled using an agent-based modeling methodology. Both capacity mechanisms improve the security of supply and reduce consumer costs. Our results indicate that interconnections do not affect the effectiveness of a capacity market, while a strategic reserve is affected negatively. The neighboring zone may free ride on the security of supply provided by the zone implementing a capacity mechanism. However, a capacity market causes crowding out of generators in the energy-only zone. A strategic reserve implemented by this region could aid in mitigating this risk.","Capacity market; Cross-border effect; Strategic reserve","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:63cab4ee-1630-42df-900b-6ed07b9d7b4c","http://resolver.tudelft.nl/uuid:63cab4ee-1630-42df-900b-6ed07b9d7b4c","Simulating climate and energy policy with agent-based modelling: The Energy Modelling Laboratory (EMLab)","Chappin, E.J.L. (TU Delft Energie and Industrie; Wuppertal Institute for Climate); De Vries, Laurens (TU Delft Energie and Industrie); Richstein, J.C. (TU Delft Energie and Industrie; Deutsches Institut für Wirtschaftsforschung); Bhagwat, P.C. (TU Delft Energie and Industrie; University of Florence); Iychettira, K.K. (TU Delft Energie and Industrie); Khan, A.S.M. (TU Delft Energie and Industrie)","","2017","We present an approach to simulate climate and energy policy for the EU, using a flexible and modular agent-based modelling approach and a toolbox, called the Energy Modelling Laboratory (EMLab). The paper shortly reviews core challenges and approaches for modelling climate and energy policy in light of the energy transition. Afterwards, we present an agent-based model of investment in power generation that has addressed a variety of European energy policy questions. We describe the development of a flexible model core as well as modules on carbon and renewables policies, capacity mechanisms, investment behaviour and representation of intermittent renewables. We present an overview of modelling results, ongoing projects, a case study on current reforms of the EU ETS, and we show their relevance in the EU context.","Agent-based modelling; Energy and climate policy; Energy modelling laboratory; Energy transition; Investment","en","journal article","","","","","","","","2019-08-18","","","Energie and Industrie","","",""
"uuid:ce980fec-0c06-406a-8e57-8cb34c9eb1a3","http://resolver.tudelft.nl/uuid:ce980fec-0c06-406a-8e57-8cb34c9eb1a3","The effectiveness of capacity markets in the presence of a high portfolio share of renewable energy sources","Bhagwat, P.C. (TU Delft Energie and Industrie); Iychettira, K.K. (TU Delft Energie and Industrie); Richstein, J.C. (TU Delft Energie and Industrie); Chappin, E.J.L. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie)","","2017","The effectiveness of a capacity market is analyzed by simulating three conditions that may cause suboptimal investment in the electricity generation: imperfect information and uncertainty; declining demand shocks resulting in load loss; and a growing share of renewable energy sources in the generation portfolio. Implementation of a capacity market can improve supply adequacy and reduce consumer costs. It mainly leads to more investment in low-cost peak generation units. If the administratively determined reserve margin is high enough, the security of supply is not significantly affected by uncertainties or demand shocks. A capacity market is found to be more effective than a strategic reserve for ensuring reliability.","Adequacy policy; Capacity markets; Security of supply","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:8705b586-f980-4458-b0db-c1336e7a7b19","http://resolver.tudelft.nl/uuid:8705b586-f980-4458-b0db-c1336e7a7b19","How Renewable Energy is Reshaping Europe’s Electricity Market Design","De Vries, Laurens (TU Delft Energie and Industrie); Verzijlbergh, R.A. (TU Delft Energie and Industrie)","","2018","We present a systematic review of the challenges to the regulation of electricity markets that are posed by the integration of variable renewable energy sources. System integration is the key to developing the required flexibility, because flexibility options exist at all system levels and within the competitive as well as in the regulated (network) domains. The fluctuating nature of variable renewable energy changes the dynamics of investment decisions. We develop a framework for analysing relations between aspects of the regulation of the power sector that need to be coordinated in order to achieve (or at least improve) economic efficiency. We base the framework on the technical functionalities of the electricity infrastructure, which we group along three dimensions: system level (from retail/distribution to transmission/wholesale), geographic scope (the connection between electricity systems) and time scales (from real-time operations and balancing markets to the investment time scale). The framework helps identify regulatory challenges—potential inefficiencies due to a lack of coordination—and to place them into context. The picture that emerges from this approach is that the institutional fragmentation of the European electricity sector will become increasingly burdensome as the development variable renewable energy requires ever closer coordination between countries, between the different levels of the electricity system and between markets that serve different time scales. Interactions between elements of market design and regulation such as congestion management, renewable energy policy and system adequacy policy affect each other and are an additional reason for a system integration approach to regulation.","Electricity market design; renewable energy; flexibility; system integration; OA-Fund TU Delft","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:6d35d607-6c63-489f-91c6-af795003f9f7","http://resolver.tudelft.nl/uuid:6d35d607-6c63-489f-91c6-af795003f9f7","Institutional challenges caused by the integration of renewable energy sources in the European electricity sector","Verzijlbergh, R.A. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie); Dijkema, G.P.J.; Herder, P.M. (TU Delft Energie and Industrie)","","2017","The integration of large amounts of variable renewable energy poses fundamental challenges to the operation and governance of the energy system. In this article we address the main institutional challenges that are caused by the integration of variable renewable energy sources like solar and wind energy in the European power system. We first address how the variable and unpredictable nature of wind and solar energy increases the demand for flexible resources and we discuss potential sources of flexibility. Next, we elaborate on how the need for more flexibility challenges the prevailing market design of todays liberalized power systems. Furthermore, we discuss the key areas where there is a need for a more integrated approach to research and policy making. The need for a more integrated approach is motivated by exposing a number of critical interdependencies between technical and institutional sub-systems.","System integration; Institutions; Electricity markets; Flexibility","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:ca890b98-5233-415e-99b6-fb137410901d","http://resolver.tudelft.nl/uuid:ca890b98-5233-415e-99b6-fb137410901d","Distributed energy resources and the organized balancing market: A symbiosis yet? Case of three European balancing markets","Poplavskaya, K. (TU Delft Energie and Industrie; AIT Austrian Institute of Technology); De Vries, Laurens (TU Delft Energie and Industrie)","","2019","Thanks to new technological advancements and EU policy impulse, distributed energy resources (DER) are poised to become a viable alternative to conventional electricity generation for the provision of balancing services to transmission system operators. In this paper we show that the design variables that affect DER access to and participation in the organized balancing market include different features of auction configuration as well as a number of formal, administrative and technical aspects of market design. In a comparative case study of the balancing markets in Austria, Germany and the Netherlands, we determine the extent to which a given market design effectively facilitates DER participation. To structure this analysis, we designed an assessment framework that provides a comprehensive tool for the assessment of balancing markets in Europe vis-à-vis DER participation. Our results show that flexible pooling conditions, a higher bidding frequency and product resolution, and the authorization of non-precontracted bids, among others, can significantly ease DER integration in the market. Different design variables, however, can enhance or neutralize each other's effects, so their interrelations need to be taken into account in order to achieve an improved and harmonized balancing market design.","Balancing market; Balancing service provider; Distributed energy resources; Market design; Market efficiency; Regulation","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:af667cd2-94cc-4f54-a560-f534d2c411ee","http://resolver.tudelft.nl/uuid:af667cd2-94cc-4f54-a560-f534d2c411ee","Biocatalytically induced surface modification of the tobacco mosaic virus and the bacteriophage M13","Vignali, Valentina (Rijksuniversiteit Groningen); S. Miranda, Barbara (University of Campinas; Rijksuniversiteit Groningen); Lodoso-Torrecilla, Irene (Rijksuniversiteit Groningen); Van Nisselroy, Cathelijn A.J. (Rijksuniversiteit Groningen); Hoogenberg, Bas Jan (Rijksuniversiteit Groningen); Dantuma, Sybren (Rijksuniversiteit Groningen); Hollmann, F. (TU Delft BT/Biocatalysis); De Vries, Jan Willem (Rijksuniversiteit Groningen)","","2019","Engineered viruses are finding an increasing number of applications in basic, translational research and materials science. Genetic and chemical engineering of capsids represents a key point for tailoring the properties of viral particles, but the synthetic efforts and limits accompanying these processes still hinder their usability. Here, a single-step highly selective biocatalytic functionalization approach is described, providing a general platform for virus-acrylate hybrid particles. The tobacco mosaic virus (TMV) and the bacteriophage M13 have been successfully modified via laccase induced free radical formation on the tyrosine residues through single electron oxidation as the initiating step and the free radicals subsequently react with acrylate-based monomers. This new approach can be extended to other biomolecular assemblies with surface exposed tyrosine residues, when the introduction of new functionalities is desired.","","en","journal article","","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2019-05-28","","","BT/Biocatalysis","","",""
"uuid:6fce364e-305e-4b3a-ade5-d3ab6ad0c16c","http://resolver.tudelft.nl/uuid:6fce364e-305e-4b3a-ade5-d3ab6ad0c16c","Making the most of short-term flexibility in the balancing market: Opportunities and challenges of voluntary bids in the new balancing market design","Poplavskaya, K. (TU Delft Energie and Industrie; AIT Austrian Institute of Technology); Lago, Jesus (TU Delft Team Bart De Schutter); Strömer, Stefan (AIT Austrian Institute of Technology); De Vries, Laurens (TU Delft Energie and Industrie)","","2021","Electricity balancing is one of the main demanders of short-term flexibility. To improve its integration, the recent regulation of the European Union introduces a common standalone balancing energy market. It allows actors that have not participated or not been awarded in the preceding balancing capacity market to participate as voluntary bidders or ‘second-chance’ bidders. We investigate the effect of these changes on balancing market efficiency and on strategic behavior in particular, using a combination of agent-based modelling and reinforcement learning. This paper is the first to model agents' interdependent bidding strategies in the balancing capacity and energy markets with the help of two collaborative reinforcement learning algorithms. Results reveal considerable efficiency gains in the balancing energy market from the introduction of voluntary bids even in highly concentrated markets while offering a new value stream to providers of short-term flexibility. ‘Second-chance’ bidders further drive competition, reducing balancing energy costs. However, we warn that this design change is likely to shift some of the activation costs to the balancing capacity market where agents are prompted to bid more strategically in the view of lower profits from balancing energy. As it is unlikely that the balancing capacity market can be removed altogether, we recommend integrating European balancing capacity markets on par with balancing energy markets and easing prequalification requirements to ensure sufficient competition.","Balancing market; Bidding strategy; Machine learning; Market design; Market efficiency; Regulation","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:b888a717-b041-4bba-a4ff-311ac4db2ae5","http://resolver.tudelft.nl/uuid:b888a717-b041-4bba-a4ff-311ac4db2ae5","Effect of market design on strategic bidding behavior: Model-based analysis of European electricity balancing markets","Poplavskaya, K. (TU Delft Energie and Industrie; AIT Austrian Institute of Technology); Lago, Jesus (TU Delft Team Bart De Schutter; Algorithms; Flemish Institute for Technological Research); De Vries, Laurens (TU Delft Energie and Industrie)","","2020","Market-based procurement of balancing services in Europe is prone to strategic bidding due to the relatively small market size and a limited number of providers. In the European Union, balancing markets are undergoing substantial regulatory changes driven the efforts to harmonize the market design and better align it with the goals of the energy transition. It is proposed to decouple the balancing energy (real-time) market from the (forward) balancing capacity market and the price of balancing energy will be based on the marginal bid. In this paper, the potential effects of these changes on market participants’ strategies are analyzed using an agent-based model. This model compares the effects of a standalone balancing energy market with different pricing rules on economic efficiency with agents that apply naïve, rule-based and reinforcement-learning strategies. The results indicate that the introduction of a standalone balancing energy market reduces the cost of balancing, even in a concentrated market with strategic bidders. Marginal pricing consistently leads to lower weighted average prices than pay-as-bid pricing, regardless of the level of competition. Nevertheless, in an oligopoly with actors bidding strategically, prices can deviate from the competitive benchmark by a factor of 4–5. This implies that the introduction of a standalone balancing energy market does not entirely solve the issue of strategic bidding, but helps dampen the prices, as compared to the balancing market prior to the design change.","Agent-based modeling; Balancing market; Bidding strategy; Market efficiency; Reinforcement learning","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:6dfb1606-d7ef-464b-acc0-d05fabb9aaa0","http://resolver.tudelft.nl/uuid:6dfb1606-d7ef-464b-acc0-d05fabb9aaa0","Integration of day-ahead market and redispatch to increase cross-border exchanges in the European electricity market","Poplavskaya, K. (TU Delft Energie and Industrie; AIT Austrian Institute of Technology); Totschnig, Gerhard (AIT Austrian Institute of Technology); Leimgruber, Fabian (AIT Austrian Institute of Technology); Doorman, Gerard (Statnett); Etienne, Gilles (Elia); De Vries, Laurens (TU Delft Energie and Industrie)","","2020","The zonal electricity market design in the Central Western European electricity market relies on redispatching generation units after market closure to manage congestion within bidding zones, while congestion between the zones is handled using flow-based market coupling. The combination of internal congestion in the meshed European network with a growing share of renewables increases the frequency and magnitude of congestion events and limits cross-border trade. The growing costs of redispatching and the divergence between grid physics and zonal markets lead to welfare losses. This paper is the first to propose an approach to improve the combined efficiency of flow-based market coupling and redispatching. We develop a novel methodology for congestion management in a zonal market with flow-based market coupling in order to increase cross-border exchanges by integrating preventive redispatch into the day-ahead market. In this approach, a set of integrated redispatch units is selected based on their high potential to reduce congestion and, as a result, free up grid capacity for cross-border exchange. We use three multi-step optimization models to demonstrate the benefits of the enhanced zonal market with integrated redispatch by comparing it to the nodal market model and a zonal market model with flow-based market coupling. The case study demonstrates the potential of the proposed methodology to significantly increase cross-border capacity and reduce the need for costly ex post redispatch. The approach is shown to be a feasible option for improving European market integration and thereby to achieve overall welfare gains.","Congestion management; Cross-border exchange; Energy system optimization; Flow-based market coupling; Redispatch","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:6b299e16-c357-49bf-8aed-b1fede8d39dc","http://resolver.tudelft.nl/uuid:6b299e16-c357-49bf-8aed-b1fede8d39dc","Electricity Markets for DC Distribution Systems: Locational Pricing Trumps Wholesale Pricing","Piao, L. (TU Delft Algorithmics; TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie); de Weerdt, M.M. (TU Delft Algorithmics); Yorke-Smith, N. (TU Delft Algorithmics)","","2021","DC distribution systems are a promising alternative to existing AC distribution systems. They connect customers to local energy sources without conversion, thus reducing power losses. However, the unique features of DC impose strict requirements for system operation compared to AC. Within the context of a liberalized energy market, this article demonstrates three promising market designs—an outcome of a comprehensive engineering design framework—that meet those DC requirements. They are an integrated market design, which incorporates all system costs into energy prices; a market design that passes wholesale energy prices directly to prosumers; and a locational energy market design that relieves congestion with nodal prices. An optimization model estimates the three market designs’ performance by simulating a realistic DC distribution system, featuring a high share of electric vehicles. Results indicate that the integrated market design is optimal in theory but computationally infeasible in practice. The wholesale energy price design aiming at constraint-free energy trading requires substantial investments in flexibility. The locational energy market design yields nearly optimal operation in urban networks and is considered the best feasible market design for DC distribution systems.","Direct current; Distribution system; Electricity market design; Flexibility; Optimization","en","journal article","","","","","","","","","","","Algorithmics","","",""
"uuid:33b7dae5-d7ef-4fe1-901e-491192a22630","http://resolver.tudelft.nl/uuid:33b7dae5-d7ef-4fe1-901e-491192a22630","Nucleation Mechanisms of Self-Assembled Physisorbed Monolayers on Graphite","Piskorz, T.K. (TU Delft ChemE/Advanced Soft Matter); Gobbo, Cristian (External organisation); Marrink, Siewert J. (Rijksuniversiteit Groningen); De Feyter, Steven (Katholieke Universiteit Leuven); De Vries, Alex H. (Rijksuniversiteit Groningen); van Esch, J.H. (TU Delft ChemE/Advanced Soft Matter)","","2019","Coarse-grained molecular dynamics simulations are employed to obtain a detailed view of the formation of long-range ordered lamellar structures of physisorbed self-assembling long functionalized alkanes on graphite. During the self-assembly, two processes take place: Langmuir preferential adsorption and rearrangement on the surface. The rearrangement starts with nucleation, in which molecules create an ordered domain. The nucleation mechanism is temperature dependent. At lower temperature independent, small and stable nuclei seed the emergence of long-range ordered domains. In contrast, at a higher temperature, molecules adsorb on the surface, and only when a certain level of surface coverage by the adsorbent is reached, the whole structure undergoes a transition from a liquid-like structure to an ordered structure. After this step, relatively slow corrections of the structure take place by Ostwald ripening.","","en","journal article","","","","","","","","","","","ChemE/Advanced Soft Matter","","",""
"uuid:03dea8c0-9c2d-4d21-b201-c462ba19318f","http://resolver.tudelft.nl/uuid:03dea8c0-9c2d-4d21-b201-c462ba19318f","Single Pixel Performance of a 32 x 32 Ti/Au TES Array With Broadband X-Ray Spectra","D'andrea, Matteo (SRON Netherlands Institute for Space Research); Taralli, Emanuele (SRON Netherlands Institute for Space Research); Akamatsu, Hiroki (SRON Netherlands Institute for Space Research); Gottardi, Luciano (SRON Netherlands Institute for Space Research); Nagayoshi, Kenichiro (SRON Netherlands Institute for Space Research); Ravensberg, Kevin (SRON Netherlands Institute for Space Research); Ridder, Marcel L. (SRON Netherlands Institute for Space Research); Vaccaro, Davide (SRON Netherlands Institute for Space Research); De Vries, Cor P. (SRON Netherlands Institute for Space Research); De Wit, Martin (SRON Netherlands Institute for Space Research); Hoogeveen, Ruud W.M. (SRON Netherlands Institute for Space Research); Gao, J.R. (TU Delft ImPhys/Optics; SRON Netherlands Institute for Space Research)","","2021","We are developing a kilo-pixels Ti/Au TES array as a backup option for Athena X-IFU. Here we report on single-pixel performance of a 32 × 32 array operated in a Frequency Division Multiplexing (FDM) readout system, with bias frequencies in the range 1-5 MHz. We have tested the pixels response at several photon energies, by means of a 55Fe radioactive source (emitting Mn-Kα at 5.9 keV) and a Modulated X-ray Source (MXS, providing Cr-Kα at 5.4 keV and Cu-Kα at 8.0 keV). First, we report the procedure used to perform the detector energy scale calibration, usually achieving a calibration accuracy better than ∼0.5 eV in the 5.4-8.9 keV energy range. Then, we present the measured energy resolution at the different energies (best single pixel performance: ΔEFWHM = 2.40 ± 0.09 eV @ 5.4 keV; 2.53 ± 0.10 eV @ 5.9 keV; 2.78 ± 0.16 eV @ 8.0 keV), investigating also the performance dependency from the pixel bias frequency and the count rate. Thanks to long background measurements (∼1 d), we finally detected also the Al-Kα line at 1.5 keV, generated by fluorescence inside the experimental setup. We analyzed this line to obtain a first assessment of the single-pixel performance also at low energy (ΔEFWHM = 1.91 eV ± 0.21 eV @ 1.5 keV), and to evaluate the linearity of the detector response in a large energy band (1.5-8.9 keV).","Energy calibration; energy resolution; MXS; TES; X-IFU; x-ray detectors","en","journal article","","","","","","","","","","","ImPhys/Optics","","",""
"uuid:e145db5a-5963-43e3-b91e-c1caa5ad372c","http://resolver.tudelft.nl/uuid:e145db5a-5963-43e3-b91e-c1caa5ad372c","How the Choice of Force-Field Affects the Stability and Self-Assembly Process of Supramolecular CTA Fibers","Piskorz, T.K. (TU Delft ChemE/Advanced Soft Matter); De Vries, A. H. (Rijksuniversiteit Groningen); van Esch, J.H. (TU Delft ChemE/Advanced Soft Matter)","","2021","In recent years, computational methods have become an essential element of studies focusing on the self-assembly process. Although they provide unique insights, they face challenges, from which two are the most often mentioned in the literature: the temporal and spatial scale of the self-assembly. A less often mentioned issue, but not less important, is the choice of the force-field. The repetitive nature of the supramolecular structure results in many similar interactions. Consequently, even a small deviation in these interactions can lead to significant energy differences in the whole structure. However, studies comparing different force-fields for self-assembling systems are scarce. In this article, we compare molecular dynamics simulations for trifold hydrogen-bonded fibers performed with different force-fields, namely GROMOS, CHARMM General Force Field (CGenFF), CHARMM Drude, General Amber Force-Field (GAFF), Martini, and polarized Martini. Briefly, we tested the force-fields by simulating: (i) spontaneous self-assembly (none form a fiber within 500 ns), (ii) stability of the fiber (observed for CHARMM Drude, GAFF, MartiniP), (iii) dimerization (observed for GROMOS, GAFF, and MartiniP), and (iv) oligomerization (observed for CHARMM Drude and MartiniP). This system shows that knowledge of the force-field behavior regarding interactions in oligomer and larger self-assembled structures is crucial for designing efficient simulation protocols for self-assembling systems.","","en","journal article","","","","","","","","","","","ChemE/Advanced Soft Matter","","",""
"uuid:044b683b-4e61-4e7e-9966-b9e9ec3730bb","http://resolver.tudelft.nl/uuid:044b683b-4e61-4e7e-9966-b9e9ec3730bb","Model development in practice: A comprehensive update to the boundary layer schemes in HARMONIE-AROME cycle 40","De Rooy, Wim C. (Royal Netherlands Meteorological Institute (KNMI)); Siebesma, A.P. (TU Delft Atmospheric Remote Sensing; Royal Netherlands Meteorological Institute (KNMI)); Baas, P. (TU Delft Atmospheric Remote Sensing); Lenderink, Geert (Royal Netherlands Meteorological Institute (KNMI)); de Roode, S.R. (TU Delft Atmospheric Remote Sensing); De Vries, Hylke (Royal Netherlands Meteorological Institute (KNMI)); Van Meijgaard, Erik (Royal Netherlands Meteorological Institute (KNMI)); Meirink, Jan Fokke (Royal Netherlands Meteorological Institute (KNMI)); Tijm, Sander (Royal Netherlands Meteorological Institute (KNMI)); Van't Veen, Bram (Royal Netherlands Meteorological Institute (KNMI))","","2022","The parameterised description of subgrid-scale processes in the clear and cloudy boundary layer has a strong impact on the performance skill in any numerical weather prediction (NWP) or climate model and is still a prime source of uncertainty. Yet, improvement of this parameterised description is hard because operational models are highly optimised and contain numerous compensating errors. Therefore, improvement of a single parameterised aspect of the boundary layer often results in an overall deterioration of the model as a whole. In this paper, we will describe a comprehensive integral revision of three parameterisation schemes in the High Resolution Local Area Modelling - Aire Limitée Adaptation dynamique Développement InterNational (HIRLAM-ALADIN) Research on Mesoscale Operational NWP In Europe - Applications of Research to Operations at Mesoscale (HARMONIE-AROME) model that together parameterise the boundary layer processes: the cloud scheme, the turbulence scheme, and the shallow cumulus convection scheme. One of the major motivations for this revision is the poor representation of low clouds in the current model cycle. The newly revised parametric descriptions provide an improved prediction not only of low clouds but also of precipitation. Both improvements can be related to a stronger accumulation of moisture under the atmospheric inversion. The three improved parameterisation schemes are included in a recent update of the HARMONIE-AROME configuration, but its description and the insights in the underlying physical processes are of more general interest as the schemes are based on commonly applied frameworks. Moreover, this work offers an interesting look behind the scenes of how parameterisation development requires an integral approach and a delicate balance between physical realism and pragmatism.","","en","journal article","","","","","","","","","","","Atmospheric Remote Sensing","","",""
"uuid:06b36cb6-1728-449a-bb66-422be9095e57","http://resolver.tudelft.nl/uuid:06b36cb6-1728-449a-bb66-422be9095e57","Can an energy only market enable resource adequacy in a decarbonized power system?: A co-simulation with two agent-based-models","Sanchez Jimenez, I.J. (TU Delft Energie and Industrie); Ribo-Perez, D.G. (TU Delft Energie and Industrie; Universitat Politécnica de Valencia); Cvetkovic, M. (TU Delft Intelligent Electrical Power Grids); Kochems, J. (German Aerospace Center); Schimeczek, C. (German Aerospace Center); De Vries, Laurens (TU Delft Energie and Industrie)","","2024","Future power systems, in which generation will come almost entirely from variable Renewable Energy Sources (vRES), will be characterized by weather-driven supply and flexible demand. In a simulation of the future Dutch power system, we analyze whether there are sufficient incentives for market-driven investors to provide a sufficient level of security of supply, considering the profit-seeking and myopic behavior of investors. We co-simulate two agent-based models (ABM), one for generation expansion and one for the operational time scale. The results suggest that in a system with a high share of vRES and flexibility, prices will be set predominantly by the demand’s willingness to pay, particularly by the opportunity cost of flexible hydrogen electrolyzers. The demand for electric heating could double the price of electricity in winter, compared to summer, and in years with low vRES could cause shortages. Simulations with stochastic weather profiles increase the year-to-year variability of cost recovery by more than threefold and the year-to-year price variability by more than tenfold compared to a scenario with no weather uncertainty. Dispatchable technologies have the most volatile annual returns due to high scarcity rents during years of low vRES production and diminished returns during years with high vRES production. We conclude that in a highly renewable EOM, investors would not have sufficient incentives to ensure the reliability of the system. If they invested in such a way to ensure that demand could be met in a year with the lowest vRES yield, they would not recover their fixed costs in the majority of years.","Agent-based model; High share of renewable energies; Flexibility; Co-simulation","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:f1ff9398-b7e4-4a91-ac88-d08056d6588f","http://resolver.tudelft.nl/uuid:f1ff9398-b7e4-4a91-ac88-d08056d6588f","How do demand response and electrical energy storage affect (the need for) a capacity market?","Khan, A.S.M. (TU Delft Energie and Industrie); Verzijlbergh, R.A. (TU Delft Energie and Industrie); Sakinci, Ozgur Can (External organisation); De Vries, Laurens (TU Delft Energie and Industrie)","","2018","To ensure security of supply and incentivize reliable investment in generation capacity, capacity markets (CMs) have been implemented or are being considered. However, demand response (DR) and electrical energy storage (EES) also contribute to system adequacy. In this paper, we analyse the change in the need for a CM if DR and EES are available, in the presence of a growing portfolio share of intermittent renewable energy sources electricity (RES-E). We present a novel hybrid electricity market model of the transition to a low-carbon electricity system which uses optimization for short-term market operations and agent-based simulation of long-term decisions. DR and EES may significantly reduce the risk of shortages in an energy-only market, even if investment decisions are myopic, like in our model, as compared to an energy-only market without flexibility options. We also present a novel mechanism for contribution of EES to the CM. This reduces the cost of the CM and improves the business case for EES. In our model, DR and EES achieve almost the same improvement of security of supply as a CM, but they do so at a lower cost. Therefore, the case for a centralized CM is weakened in a system with even a limited share of DR and medium-term EES, as presented in our model. These results depend on the duration of scarcity events and the cost of EES and DR. Refinement of the model representation will be required to extrapolate these conclusions to real markets with other types of DR, EES and CMs.","Agent-based modelling; Capacity market; Demand response; Electrical energy storage; Optimization; System adequacy","en","journal article","","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2020-07-22","","","Energie and Industrie","","",""
"uuid:227464b0-b54d-4397-8283-a48938d1ce1f","http://resolver.tudelft.nl/uuid:227464b0-b54d-4397-8283-a48938d1ce1f","Market Signals as Adequacy Indicators for Future Flexible Power Systems","De Vries, Laurens (TU Delft Energie and Industrie); Sanchez Jimenez, I.J. (TU Delft Energie and Industrie)","","2022","Existing indicators of electricity system adequacy need to be supplemented with economic performance indicators. As power systems are decarbonized, energy storage technologies are being developed and demand is becoming more flexible. Reliability standards need to reflect the price elasticity of these sources of flexibility. During scarcity situations, this increased demand flexibility may prevent outages, but still lead to high electricity prices. If the average electricity price is well above the average cost of power supply, this can be an indication that the system is not adequate, even if the outage rate does not exceed the current reliability standards.","electricity markets; renewable energy; adequacy assessment; system adequacy; OA-Fund TU Delft","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:80eac803-a5d5-4aad-a09b-1f01cd163c1e","http://resolver.tudelft.nl/uuid:80eac803-a5d5-4aad-a09b-1f01cd163c1e","Trading power instead of energy in day-ahead electricity markets","Philipsen, R.M. (TU Delft Algorithmics); Morales-Espana, G. (ECN, Petten); de Weerdt, M.M. (TU Delft Algorithmics); De Vries, Laurens (TU Delft Energie and Industrie)","","2019","Day-ahead electricity markets are inefficient due to their coarse discretisation of time and their representation of electricity production and consumption in energy per time interval. This leads to excessive costs and infeasible schedules in the market clearing results. Some real-world systems have increased the resolution to improve accuracy, but this comes at a high computational cost. We propose an alternative, based on using linear power trajectories in the day-ahead scheduling process, which represent the momentary electricity production. Changing from a traditional energy-based to such a power-based formulation of the scheduling method can reduce cost by several percentage points, leading to a cost reduction of millions of euros in real-world systems on a yearly basis. Attempting to do so by increasing the resolution of the schedule would be accompanied by large increases in computational demands. Furthermore, we provide market design options to implement power-based bidding and pricing in day-ahead electricity markets, showing that pricing and market rules which encompass existing markets are readily available for implementation, and illustrate these with examples.","Day-ahead market; Market design; Power-based scheduling; Unit commitment","en","journal article","","","","","","","","","","","Algorithmics","","",""
"uuid:46e9b0d3-da76-4a6e-ac5f-d1bb6d3f2842","http://resolver.tudelft.nl/uuid:46e9b0d3-da76-4a6e-ac5f-d1bb6d3f2842","Aligning prosumers with the electricity wholesale market: The impact of time-varying price signals and fixed network charges on solar self consumption","Klein, Martin (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)); Ziade, Ahmad (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)); De Vries, Laurens (TU Delft Energie and Industrie)","","2019","PV-battery systems are currently not operated in an energy system optimal way as their operation heuristic (maximization of self-consumption) is generally unaffected by competitive market signals. To evaluate potential regulatory intervention, we propose a market alignment indicator which measures the relative economic efficiency of a prosumer battery compared to a benchmark system that is completely responsive to wholesale market prices. Investigating the case of PV-battery systems in Germany, we find that scarcity signals transmitted to prosumers improve the market alignment of PV-battery systems while retaining similar levels of self-consumption and autarky rates. Both dynamic prices for generation (time-varying feed-in remuneration) and consumption (real-time electricity prices) can improve welfare, that is lowering consumer expenditures for electricity at the wholesale market. The effectiveness of the respective instrument mix depends on the relative levels of the feed-in tariff, the grid consumption to be saved and the solar generation costs. Accordingly, increasing fixed network charges can have a significant positive impact on the market alignment of prosumer batteries if combined with dynamic prices, as they change the relative composition of retail prices.","Dynamic prices; Fixed network charges; Market alignment; Photovoltaics; Prosumer; PV-battery systems","en","journal article","","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2020-05-01","","","Energie and Industrie","","",""
"uuid:64b8f701-38b3-423f-b337-a3796dcd8414","http://resolver.tudelft.nl/uuid:64b8f701-38b3-423f-b337-a3796dcd8414","An analysis of a forward capacity market with long-term contracts","Bhagwat, P.C. (TU Delft Energie and Industrie; European University Institute); Marcheselli, A. (TU Delft OLD CIO - Front Office; TU Delft Energie and Industrie; Politecnico di Milano); Richstein, J.C. (TU Delft Energie and Industrie; DIW Berlin); Chappin, E.J.L. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie)","","2017","We analyze the effectiveness of a forward capacity market (FCM) with long-term contracts in an electricity market in the presence of a growing share of renewable energy. An agent-based model is used for this analysis. Capacity markets can compensate for the deteriorating incentive to invest in controllable power plants when the share of variable renewable energy sources grows, but may create volatile prices themselves. Capacity markets with long-term contracts have been developed, e.g. in the UK, to stabilize capacity prices. In our analysis, a FCM is effective in providing the required adequacy level and leads to lower cost to consumers and more stable capacity prices, as compared to a yearly capacity market. In case of a demand shock, a FCM may develop an investment cycle, but it still maintains security of supply. Its main effect on the power plant portfolio is more investment in peak plant.","Adequacy policy; Agent-based modeling; Capacity markets; Capacity mechanisms; Electricity market; Security of supply","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:7717b72a-75cf-4692-829b-5ad7598f8e42","http://resolver.tudelft.nl/uuid:7717b72a-75cf-4692-829b-5ad7598f8e42","Spin-orbit interaction in a dual gated InAs/GaSb quantum well","Beukman, A.J.A. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft); de Vries, F.K. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft); van Veen, J. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft); Skolasinski, R.J. (TU Delft QRD/Wimmer Group; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft); Wimmer, M.T. (TU Delft QRD/Wimmer Group; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft); Qu, F. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft); De Vries, David T. (Student TU Delft; Kavli institute of nanoscience Delft); Nguyen, Binh Minh (HRL Laboratories); Kouwenhoven, Leo P. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Microsoft Quantum Lab Delft; Kavli institute of nanoscience Delft)","","2017","The spin-orbit interaction is investigated in a dual gated InAs/GaSb quantum well. Using an electric field, the quantum well can be tuned between a single-carrier regime with exclusively electrons as carriers and a two-carrier regime where electrons and holes coexist. The spin-orbit interaction in both regimes manifests itself as a beating in the Shubnikov-de Haas oscillations. In the single-carrier regime the linear Dresselhaus strength is characterized by β=28.5 meV Å and the Rashba coefficient α is tuned from 75 to 53 meV Å by changing the electric field. In the two-carrier regime a quenching of the spin splitting is observed and attributed to a crossing of spin bands.","","en","journal article","","","","","","","","","","","QRD/Kouwenhoven Lab","","",""
"uuid:05042394-0136-444c-b46a-31cfd12dc09c","http://resolver.tudelft.nl/uuid:05042394-0136-444c-b46a-31cfd12dc09c","Mechanism of Ostwald Ripening in 2D Physisorbed Assemblies at Molecular Time and Length Scale by Molecular Dynamics Simulations","Piskorz, T.K. (TU Delft ChemE/Advanced Soft Matter); De Vries, Alex H. (Rijksuniversiteit Groningen); De Feyter, Steven (Katholieke Universiteit Leuven); van Esch, J.H. (TU Delft ChemE/Advanced Soft Matter)","","2018","Ostwald ripening can improve the long-range order of self-assembled monolayers by the growth of large domains and disassembly of smaller ones. Here, coarse-grained molecular dynamics simulations are used to study the dynamics of the stable assembly and the coarsening of defects of physisorbed monolayers of long-chain functionalized alkanes. Our results show that the partial desorption from the surface of one or more adsorbent molecules is the essential process that allows other adsorbent molecules to rearrange on the surface and thereby improve alignment. We also show that the ripening process is faster at higher temperature because the rate of partial desorption is higher.","","en","journal article","","","","","","","","","","","ChemE/Advanced Soft Matter","","",""
"uuid:1baa5f8b-366d-43ec-80bf-239335c288b0","http://resolver.tudelft.nl/uuid:1baa5f8b-366d-43ec-80bf-239335c288b0","Electricity Markets for DC Distribution Systems: Design Options","Piao, L. (TU Delft Algorithmics; TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie); de Weerdt, M.M. (TU Delft Algorithmics); Yorke-Smith, N. (TU Delft Algorithmics; American University of Beirut)","","2019","DC distribution systems (DCDSs) are a promising alternative to AC systems because they remove AC-DC conversions between renewable sources and loads. Their unique features compared to AC include low system inertia, strict power limits and power–voltage coupling. In a liberalised electricity market, merely applying an AC market design to a DCDS cannot guarantee the latter’s supply security and voltage stability; new markets must be designed to meet DC challenges. This article identifies the key design options of DCDS electricity markets. To identify these options, we develop a comprehensive design framework for local electricity markets; to our knowledge, we provide the first such analysis. Whereas previous studies focus on separate aspects of DCDS markets, we widen the scope to include the role of market architecture and investigate the arrangements of sub-markets. As an illustration, we demonstrate three promising DCDS market designs that can be defined in our framework, and provide a first assessment of their performance.","Direct current; Distribution system; Electricity market design; Flexibility; Local market","en","journal article","","","","","","","","","","","Algorithmics","","",""
"uuid:55ba141d-fa70-4fc5-b0a8-e5ce528d8923","http://resolver.tudelft.nl/uuid:55ba141d-fa70-4fc5-b0a8-e5ce528d8923","African power pools and regional electricity market design: Taking stock of regional integration in energy sectors","Elabbas, Mohamed A.Eltahir (Comillas Pontifical University; Student TU Delft); De Vries, Laurens (TU Delft Energie and Industrie); Correljé, A. (TU Delft Economics of Technology and Innovation)","","2023","While the traditional perspective on regional power pools is that of regional electricity markets, regional power pools in Africa are development tools with unrepresentative and under-researched dynamics in their evolution and market design. Five African power pools are under development to bring the continent into a single electricity market. This paper analyses the evolution of African power pools by examining their design factors and dynamics. It compares the three most advanced power pools (SAPP, WAPP and EAPP) to identify barriers, forces, and development approaches. The paper devises a multilayer analytical framework to organise the various elements in the institutional context of African power pools and structure the analysis of the physical, economic, institutional and political factors. The analysis shows that the unequal distribution of natural energy endowments across the regions stimulated the historical development of interconnections and trade between countries. The characteristics of regional integration were vital in shaping the power pool's institutions and development approaches. We have identified three motors of change that have driven the development; regional economic communities, members’ strategies, and international institutions. It is crucial for progress that the pool staff can mitigate non-cooperative strategies, address members’ concerns, and incentivise a shift in national agendas to build confidence in regional trade.","African power pools; Comparative case study; Market design; Power sector reforms; Regional electricity market; Regional integration","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:46b9457b-7427-42cd-a595-0a2c7ced3c63","http://resolver.tudelft.nl/uuid:46b9457b-7427-42cd-a595-0a2c7ced3c63","To charge or not to charge? Using Prospect Theory to model the tradeoffs of electric vehicle users","Pelka, S. (TU Delft Energie and Industrie; Fraunhofer Institute for Systems and Innovation Research ISI); Bosch, A. (Fraunhofer Institute for Systems and Innovation Research ISI); Chappin, E.J.L. (TU Delft Energie and Industrie); Liesenhoff, F. (Fraunhofer Institute for Systems and Innovation Research ISI); Kühnbach, M. (Fraunhofer Institute for Solar Energy Systems ISE); De Vries, Laurens (TU Delft Energie and Industrie)","","2024","Electric vehicle (EV) users who aim to become flexibility providers face a tradeoff between staying in control of charging and minimizing their electricity costs. The common practice is to charge immediately after plugging in and use more electricity than necessary. Changing this can increase the EV’s flexibility potential and reduce electricity costs. Our extended electricity cost optimization model systematically examines how different changes to this practice influence electricity costs. Based on the Prospect Theory and substantiated by empirical data, it captures EV users’ tradeoff between relinquishing control and reducing charging costs. Lowering the need to control charging results in disproportionally large savings in electricity costs. This finding incentivizes EV-users to relinquish even more control of charging. We analyzed changes to two charging settings that express the need for control. We found that changing only one setting offsets the other and reduces its positive effect on cost savings. Behavioral aspects, such as rebound effects and inertia that are widely documented in the literature, support this finding and underline the fit of our model extension to capture different charging behaviors. Our findings suggest that service providers should convince EV-users to relinquish control of both settings.","Direct load control; Discomfort cost; Electric vehicle; Prospect Theory; Prosumer; Smart charging","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:8ca97db0-1d71-4ca6-9789-4211420e5221","http://resolver.tudelft.nl/uuid:8ca97db0-1d71-4ca6-9789-4211420e5221","Blueprints: Systematizing Behavior Change Designs-The Case of Social Comparison Theory","De Vries, Roelof A.J. (Hogeschool Utrecht); Lemke, M. (TU Delft Design Aesthetics); Ludden, Geke D.S. (University of Twente)","","2023","To improve people's lives, human-computer interaction researchers are increasingly designing technological solutions based on behavior change theory, such as social comparison theory (SCT). However, how researchers operationalize such a theory as a design remains largely unclear. One way to clarify this methodological step is to clearly state which functional elements of a design are aimed at operationalizing a specific behavior change theory construct to evaluate if such aims were successful. In this article, we investigate how the operationalization of functional elements of theories and designs can be more easily conveyed. First, we present a scoping review of the literature to determine the state of operationalizations of SCT as behavior change designs. Second, we introduce a new tool to facilitate the operationalization process. We term the tool blueprints. A blueprint explicates essential functional elements of a behavior change theory by describing it in relation to necessary and sufficient building blocks incorporated in a design. We describe the process of developing a blueprint for SCT. Last, we illustrate how the blueprint can be used during the design refinement and reflection process.","Additional Key Words and PhrasesBehavior change theory; behavior change design; intermediate-level knowledge; methods; multidisciplinary research; operationalization; scoping review; social comparison theory","en","journal article","","","","","","","","","","","Design Aesthetics","","",""
"uuid:f95ac433-3b57-420c-aae7-24bdeef36fc3","http://resolver.tudelft.nl/uuid:f95ac433-3b57-420c-aae7-24bdeef36fc3","Innovative Electricity Market Designs to Support a Transition to (Near) 100% Renewable Power System: First Results from H2020 TradeRES Project","Estanqueiro, Ana (Laboratório Nacional de Energia e Geologia); Strbac, Goran (Imperial College London); Chrysanthopoulos, Nikolaos (Imperial College London); Santos, Gabriel (Polytechnic of Porto); Johanndeiter, Silke (EnBW AG); Algarvio, Hugo (Laboratório Nacional de Energia e Geologia); Syse, Helleik (Bityoga); Sperber, Evelyn (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)); Wang, Ni (TNO); Sanchez Jimenez, I.J. (TU Delft Energie and Industrie); Qiu, Dawei (Imperial College London); Vale, Zita (Polytechnic of Porto); Nienhaus, Kristina (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)); Kochems, Johannes (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)); Schimeczek, Christoph (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)); Sijm, Jos (DIANA FEA); De Vries, Laurens (TU Delft Energie and Industrie); Lopes, Fernando (Laboratório Nacional de Energia e Geologia); Couto, António (Laboratório Nacional de Energia e Geologia)","","2023","Developing innovative electricity market designs to facilitate a sustainable transition to (near) 100% renewable power systems while meeting societal needs is a crucial and actual topic of research. This article presents preliminary key findings from the H2020 European project TradeRES, addressing this critical topic. The project uses agent-based and optimization models to effectively capture the behaviour of different market players, and to analyse the current and future power system energy mixes of selected European case studies with different physical and spatial scales from: i) local energy communities and local energy markets (LEMs); ii) national/regional - the Netherlands, Germany, and Iberia (Portugal and Spain); and iii) pan-European energy markets. The first results on LEMs indicate a substantial economic benefit for participants and enhanced revenue streams for distributed energy resources, able to i) incentivise further decentralised investments; ii) promote the growth of variable renewable energy systems (vRES) and iii) increase flexibility at the local level. The outcomes are sensitive to the tariffs’ structure, while the retail sector competitiveness was identified as a critical parameter affecting its efficiency. For the pan-European and national/regional case studies, the first set of simulations had consistent outcomes, namely, by pointing out current design of energy-only markets to be insufficient to incentivize the high levels of vRES foreseen in Europe. Different support schemes (e.g., fixed market premia, contract for differences) were tested and results suggest they may play a relevant role in effectively covering the cost of vRES in a market environment.","electricity market; vres large scale integration; near 100% res power systems","en","journal article","","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2024-06-19","","","Energie and Industrie","","",""
"uuid:6fc368af-b276-400c-84c7-7b891cec508f","http://resolver.tudelft.nl/uuid:6fc368af-b276-400c-84c7-7b891cec508f","Risk vs. restriction—An investigation of capacity-limitation based congestion management in electric distribution grids","Hennig, R.J. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie); Tindemans, Simon H. (TU Delft Intelligent Electrical Power Grids)","","2024","Electrification of energy end-uses brings an increasing load on electric distribution grids with load peaks that can cause network congestion. However, many new end-uses like electric vehicles, heat pumps, and electrified industrial processes have some flexibility to move their power consumption away from peak times. Congestion management mechanisms can harness this flexibility. This paper investigates congestion management mechanisms based on limited available network capacity for flexible loads during peak times. A case study discusses and investigates real-world examples of such mechanisms from proposals in Germany and the Netherlands. They differ concerning the lead time at which the capacity limitation is announced, with options from near real-time and day-ahead to long-term. These mechanisms are suited to remove network congestion, but there are significant trade-offs concerning the lead time. A shorter lead time leaves more room for using the network during non-congested times but creates a risk of curtailment for end-users, which may come with associated balancing and re-procurement costs. Longer lead times give more certainty on network access conditions but often restrict network usage even when there is no network congestion.","distribution network; Load control; congestion management; Capacity subscription; Flexibility; Electricity","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:f8292abe-ac83-4900-8f98-ed5d505f17f3","http://resolver.tudelft.nl/uuid:f8292abe-ac83-4900-8f98-ed5d505f17f3","What is a good distribution network tariff?—Developing indicators for performance assessment: Developing indicators for performance assessment","Hennig, R.J. (TU Delft Energie and Industrie); Ribo-Perez, D.G. (Universitat Politécnica de Valencia); De Vries, Laurens (TU Delft Energie and Industrie); Tindemans, Simon H. (TU Delft Intelligent Electrical Power Grids)","","2022","The adoption of distributed energy resources such as PV cells, electric vehicles and batteries in electric grids is increasing steadily. This brings new challenges for distribution networks. The current network tariffs were not designed for these types of usage and, in many cases, they are not adequate anymore. Thus, many new tariff frameworks have been proposed. In this paper, we focus on the question of how to assess whether a given tariff framework fulfills its objectives. We propose to use quantitative indicators for performance assessment. We give examples of indicators for common objectives and demonstrate how they can be derived from a cost-accounting methodology for distribution networks.","Electric distribution networks; Tariffs; Distributed energy resources; Performance assessment","en","journal article","","","","","","","","","","","Energie and Industrie","","",""
"uuid:1a8ad15d-48dc-4b5d-a08d-7b337bae28c8","http://resolver.tudelft.nl/uuid:1a8ad15d-48dc-4b5d-a08d-7b337bae28c8","Congestion management in electricity distribution networks: Smart tariffs, local markets and direct control","Hennig, R.J. (TU Delft Technology, Policy and Management; TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Technology, Policy and Management; TU Delft Energie and Industrie); Tindemans, Simon H. (TU Delft Electrical Sustainable Energy; TU Delft Intelligent Electrical Power Grids)","","2023","Increasing peaks from high-power loads such as EVs and heat pumps lead to congestion of electric distribution grids. The inherent flexibility of these loads could be used to resolve congestion events. Possible options for this are smart network tariffs, market-based approaches, and direct control of flexible loads by the network operator. In most instances, these approaches are looked at in isolation, without considering potential connections and trade-offs between them. In this contribution, we aim to bridge this gap by presenting an overarching design framework for congestion management mechanisms. We classify proposals based on design choices and qualitatively discuss their benefits and risks based on an extensive literature analysis. As there is no one-size-fits-all solution, we map possible risks and discuss the pros and cons of different mechanisms for various problem types. We caution against using market-based mechanisms for local congestion, as they can be susceptible to undesired strategic behavior of market actors.","Congestion management; Distribution networks; Dynamic tariffs; Flexibility markets; Load control","en","journal article","","","","","","","","","Technology, Policy and Management","Electrical Sustainable Energy","Energie and Industrie","","",""
"uuid:3979e4b4-83d9-44ae-aa0f-8106e749a9e3","http://resolver.tudelft.nl/uuid:3979e4b4-83d9-44ae-aa0f-8106e749a9e3","Aspecten van zandtransport in open waterlopen","De Vries, M.","","1971","College ""Materiaaltransport B.O."", sedimenttransport in rivieren.","sediment transport; rivieren; collegedictaat f10a","nl","lecture notes","TU Delft, Section Hydraulic Engineering","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:c694ab15-c18f-4052-8e07-54ecf9713314","http://resolver.tudelft.nl/uuid:c694ab15-c18f-4052-8e07-54ecf9713314","Prijsbewegingen op de koopwoningmarkt: OTB-cursus: De Markt van Koopwoningen","De Vries, P.","","2010","","koopwoningmarkt","nl","lecture notes","Onderzoeksinstituut OTB, TU Delft","","","","","","","","OTB Research Institute","OTB onderzoek","","","",""
"uuid:b03e1c00-585f-4d02-910d-83fdf3228692","http://resolver.tudelft.nl/uuid:b03e1c00-585f-4d02-910d-83fdf3228692","Lange golven I","Verspuy, C.; De Vries, M.","","1978","Collegediktaat b73a.","lange golven; getijgolf; ondiepwater getij; komberging","nl","lecture notes","TU Delft, Section Hydraulic Engineering","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:ed331010-c8e8-4f42-9396-9ade25ce17ae","http://resolver.tudelft.nl/uuid:ed331010-c8e8-4f42-9396-9ade25ce17ae","Morphological computations","De Vries, M.","","1976","Lecture notes sediment transport in rivers, formulas and numerical models.","sediment transport; river morphology; bedload transport; river dunes; lecture note f10a","en","lecture notes","TU Delft, Section Hydraulic Engineering","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:2621aaf5-46b0-418f-9b6f-2948dfff183f","http://resolver.tudelft.nl/uuid:2621aaf5-46b0-418f-9b6f-2948dfff183f","Measuring and explaining house price developments","De Vries, P.","","2010","","","nl","lecture notes","Onderzoeksinstituut OTB","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:4e95ddfd-6ee8-4fe6-8eed-0b3b07c0c757","http://resolver.tudelft.nl/uuid:4e95ddfd-6ee8-4fe6-8eed-0b3b07c0c757","Engineering potamology","De Vries, M.","","1985","Lecture notes on river engineering and river morphology.","river morphology; river engineering","en","lecture notes","TU Delft, Department Hydraulic Engineering and IHE Delft","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:1f3b3143-f0a6-40db-a3b5-9fddb429502d","http://resolver.tudelft.nl/uuid:1f3b3143-f0a6-40db-a3b5-9fddb429502d","Onderzoek en CBS-data","De Vries, P.","","2011","","","nl","lecture notes","Statistics Netherlands","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:080de030-f3dc-49c9-8574-023e69535b8c","http://resolver.tudelft.nl/uuid:080de030-f3dc-49c9-8574-023e69535b8c","Prijsbewegingen op de woningmarkt","Boumeester, H.; van der Heijden, H.; De Vries, P.","","2010","","","nl","lecture notes","Beroepsopleiding makelaars","","","","","","","","OTB Research Institute","Housing Systems","","","",""
"uuid:cd1bdfa0-0d41-4e4a-bd21-14bfb9ee2519","http://resolver.tudelft.nl/uuid:cd1bdfa0-0d41-4e4a-bd21-14bfb9ee2519","En de prijzen? Zullen ze verder stijgen?","De Vries, P.","","2011","","","nl","lecture notes","Vlaamse overheid. Steunpunt Ruimte en Wonen en de Vlaamse Woonraad","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:965c4e6f-ed4e-429a-bd0d-b8e4f1cfc864","http://resolver.tudelft.nl/uuid:965c4e6f-ed4e-429a-bd0d-b8e4f1cfc864","Waterloopkundig onderzoek","De Vries, M.","","1975","Collegediktaat waterloopkundig onderzoek.","waterloopkundig onderzoek; schaalregels; modelonderzoek; scale models","nl","lecture notes","TU Delft, sectie vloeistofmechanica","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:7a2a7027-d885-4f9d-8769-e3b23ebdddd6","http://resolver.tudelft.nl/uuid:7a2a7027-d885-4f9d-8769-e3b23ebdddd6","De woningprijs","De Vries, P.","","2011","","","nl","lecture notes","Brink Groep","","","","","","","","OTB Research Institute for the Built Environment","OTB Reseach","","","",""
"uuid:02dd87f6-a156-4f63-8a97-0dc6b0f6bac2","http://resolver.tudelft.nl/uuid:02dd87f6-a156-4f63-8a97-0dc6b0f6bac2","Sedimenttransport","De Vries, M.","","1974","Collegedictaat f10. In deze handleiding kan slechts een eerste kennismaking met de problemen worden gegeven, die samenhangen met het transport van sedimenten als gevolg van de waterbeweging. Door de interactie van waterbeweging en sedimentbeweging is er sprake van gecompliceerde processen, die zich slecht ten dele theoretisch laten benaderen. Er is derhalve een sterk experimentele benadering nodig. Het sterk empirische karakter van de beschikbare oplossingen voor deelproblemen maakt dat de toepassing bijzonder kritisch moet gebeuren. Steeds moet de vraag worden gesteld of een bepaalde theorie voor het beschouwde geval weI mag worden toegepast.","sediment transport; bodemtransport; spoeltransport; zwevend transport","nl","lecture notes","TU Delft, Section Hydraulic Engineering","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:ff77dce8-19bc-4612-97b1-3464de96e81a","http://resolver.tudelft.nl/uuid:ff77dce8-19bc-4612-97b1-3464de96e81a","River engineering","De Vries, M.","","1993","One dimension models - basic eauations, analytical models, numberical models. One dimensional models -suspended load, roughness and resistance of river beds. Solving river problems - tools, flood mitigation, bank protection.","river engineering; rivers","en","lecture notes","TU Delft, Department Hydraulic Engineering","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:893954f5-0a14-4296-a7ee-7ad1462ae45a","http://resolver.tudelft.nl/uuid:893954f5-0a14-4296-a7ee-7ad1462ae45a","Rivieren","De Vries, M.","","1990","inleiding rivierkunde, morfologische processen, gebruik van rivieren (sedimentonttrekking, wateronttrekking, zandvangen, drainage en hoogwaterbeveiliging, scheepvaart), ingrepen in rivieren, kanalisatie.","rivieren; scheepvaart; riviermorfologie","nl","lecture notes","TU Delft, Department Hydraulic Engineering","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:3b801454-3cac-43f7-8566-91729f6a0b7e","http://resolver.tudelft.nl/uuid:3b801454-3cac-43f7-8566-91729f6a0b7e","Wave field synthesys sound reproduction system using a distributed mode panel","Boone, M.M.; De Vries, D.; Horbach, U.","","2003","Abstract not available for EP 1336323 (A2)","","en","patent","European Patent Office","","","","","","","","Applied Sciences","","","","",""
"uuid:4460af82-7674-4700-b603-fdd0720857c1","http://resolver.tudelft.nl/uuid:4460af82-7674-4700-b603-fdd0720857c1","Radionuclide generator having first and second atoms of a first element","Bode, P.; Wolterbeek, H.T.; De Vries, D.J.; De Bruin, M.","","2013","The invention is in the field of a radionuclide generator. A radionuclide is an atom with an unstable nucleus, which is a nucleus characterized by excess energy available to be imparted either to a newly created radiation particle within the nucleus or to an atomic electron. Radionuclide generators contain a parent isotope that decays to produce a radioisotope. The parent is usually produced in a nuclear reactor.","","en","patent","European Patent Office","","","","","","","","Applied Sciences","RST/Radiation, Science and Technology","","","",""
"uuid:9def494a-10ae-49d4-9c4b-ecdb3983e101","http://resolver.tudelft.nl/uuid:9def494a-10ae-49d4-9c4b-ecdb3983e101","Werkwijze voor de bereiding van chimere polynucleotiden","De Vries, S.; Yildirim, E.","","2004","Production of chimeric polynucleotides by linking a double-stranded polynucleotide comprising a first gene or gene fragment at its 3' end to a double-stranded polynucleotide comprising a second gene or gene fragment at its 5' end comprises blunt-ending the two polynucleotides and ligating the blunt ends.","","en","patent","European Patent Office","","","","","","","","Applied Sciences","","","","",""
"uuid:7702aaba-2b82-4be6-9f5b-4519deef5d98","http://resolver.tudelft.nl/uuid:7702aaba-2b82-4be6-9f5b-4519deef5d98","Sound reproduction system","Boone, M.M.; De Vries, D.; Horbach, U.","","2002","Arrangement of a sound reproduction system (1), including at least one input (2), a sound field generator (4), a loudspeaker panel (10); the at least one input (2) connected to the sound filed generator (4), and the sound filed (4) connected to the loudspeaker panel (10); the at least one input (2) arranged for generating and audio signal; the sound filed generator (4) including a wave field synthesiser (6) arranged for generating a spatially perceptible sound field for the audio signal and for outputting the spatially perceptible sound field to the loudspeaker panel (10) consisting of a plate (12) and a plurality of transducers (16), arranged within an array (14) on the large plate (12) for reproducing the spatially perceptible sound field from the wave field synthesisser (6) by exciting bending waves in the plate (12).","","en","patent","European Patent Office","","","","","","","","Applied Sciences","","","","",""
"uuid:55865a47-a389-4e49-9433-0a9c85ae211a","http://resolver.tudelft.nl/uuid:55865a47-a389-4e49-9433-0a9c85ae211a","Circular microphone array for multi channel audio recording","Hulsebos, E.M.; De Vries, D.; Boone, M.M.; Schuurmans, T.J.G.","","2004","An audio system has a circular microphone array with a number of microphones arranged on a circle for receiving a sound field. A digital signal processor is provided for processing output signals from these microphones. To establish well controlled and sharp directivity patterns the audio system performs a weighted integration of the sound field on predetermined portions of the circle. The weighted integration can be performed in a pre-processor reducing the number of channels by creating a smaller number of virtual microphones or by selecting specially designed microphones","","en","patent","European Patent Office","","","","","","","","Applied Sciences","","","","",""
"uuid:adb658b8-1b40-42dc-a3e0-aa7893766b9a","http://resolver.tudelft.nl/uuid:adb658b8-1b40-42dc-a3e0-aa7893766b9a","Verbindingssysteem voor rondhout","De Vries, P.A.; Lanser, J.J.","","2003","The connecting system for rod-shaped construction components (1) comprises connecting (3) and coupling devices for the rods and a separate coupling block (4) to which coupling devices (7) are fixed for coupling of connecting devices. The coupling devices are located on two opposite sides of the coupling block. Coupling blocks in the system are joined together in the extension of the sides in which rods are fitted. The coupling blocks have principally a cubic shape and the coupling surfaces are formed by two opposing sides. Between the head side of the rod and the locating surface of the coupling block a head plate is fitted.","","nl","patent","European Patent Office","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:bb29f5dd-9084-47c1-9924-d266d9986b77","http://resolver.tudelft.nl/uuid:bb29f5dd-9084-47c1-9924-d266d9986b77","Filosofische kijk op technische kennis; Reformatorische-wijsgerige beschouwingen over de aard van technische kennis","De Vries, M.J.","","2004","","Intreerede","nl","public lecture","","","","","","","","","","","","","",""
"uuid:e2656a3f-7995-4dc2-a9dc-02109a5ba9b9","http://resolver.tudelft.nl/uuid:e2656a3f-7995-4dc2-a9dc-02109a5ba9b9","Bètadidactiek: Kunstje, kunst of kunde: naar een R&D cultuur voor de bètadidactiek","De Vries, M.J.","","2009","","Intreerede","nl","public lecture","","","","","","","","","Applied Sciences","","","","",""
"uuid:254a0efe-6d1b-48c8-b09e-5c6a56fb397a","http://resolver.tudelft.nl/uuid:254a0efe-6d1b-48c8-b09e-5c6a56fb397a","Over water en wind","De Vries, M.","","1975","","Intreerede","nl","public lecture","Delftse Universitaire Pers","","","","","","","","","","","","",""
"uuid:351305f0-8522-4167-9db7-18e41ba30cb1","http://resolver.tudelft.nl/uuid:351305f0-8522-4167-9db7-18e41ba30cb1","Productie van azijnzuuranhydride via keteen door pyrolyse van azijnzuur","Broens, B.H.; De Vries, F.H.","","1972","Document(en) uit de collectie Chemische Procestechnologie.","","nl","report","Delft University","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:7cb36152-3021-45bd-a84c-12bb0ffc07ed","http://resolver.tudelft.nl/uuid:7cb36152-3021-45bd-a84c-12bb0ffc07ed","Tetra-aethyl lood","Van Wezel, J.; De Vries, K.S.","","1954","Document(en) uit de collectie Chemische Procestechnologie","","nl","report","Delft University of Technology","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:2b62ccd2-cf9b-471e-bd0f-0d888d53822b","http://resolver.tudelft.nl/uuid:2b62ccd2-cf9b-471e-bd0f-0d888d53822b","Modelling of sediment transport: Link in a chain","De Vries, M.","","1977","Rather than reporting on a specific topic of current research in the broad field of sediment transport and river morphology, the writer will give a general contemplation on the state of the art. This will not be a review in the usual sense. The alloted space would then be filled easily with references. References will only be made here if it cannot be avoided. Moreover only sediment transport due to currents will be treated. To avoid confusion it is necessary to indicate that modelling of sediment transport is used at present (1977) in at least three meanings: (i) A theoretical framework for sediment transport proper. This mainly implies a relation between hydraulic parameters and the amount of sediment transport. This framework will have to be supplemented with experimental data before a useful transport predictor is attained. (ii) A mathematical framework for morphological processes in rivers, used to forecast morphological changes in rivers e.g. due to human interference (morphological computations). (iii) A scale model with mobile bed of a river in order to carry out similar predictions as under (ii) (mobile-bed scale models). In which follows the vague term ""modelling of sediment transport"" will be avoided if confusion may be introduced.","sediment transport; river morphology","en","report","TU Delft","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:a176334d-6391-4821-8c5f-9c91b6b32a27","http://resolver.tudelft.nl/uuid:a176334d-6391-4821-8c5f-9c91b6b32a27","Upwind design basis (WP4: Offshore foundations and support structures)","Fischer, T.; De Vries, W.E.; Schmidt, B.","","2010","The presented design basis gives a summarized overview of relevant design properties for a later offshore wind turbine design procedures within work package 4. The described offshore site is located in the Dutch North Sea and has a water depth of 21m. Therefore it will be chosen as shallow site within the work package for further design studies. Besides information about climate properties like wind and wave definitions, other load properties are specified according to a current design guideline. Here the guideline of the Germanischer Lloyd and IEC is chosen. Finally the relevant design load cases according to the guideline are listed, which have to be fulfilled for a suitable support structure design.","project upwind; integrated wind turbine design","en","report","Upwind","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:0950fa27-37b6-42f0-bf8d-067414064e16","http://resolver.tudelft.nl/uuid:0950fa27-37b6-42f0-bf8d-067414064e16","Een proces voor continue harding: Continue harding van monomere vetzuren","Abspoel, M.; Chin a Lien, H.; Van Doeland, D.; Dorsteen, M.; De Feber, M.; Gooijer, J.; Hoeksma, M.; Okhuijsen, B.; Raktoe, L.; Ramondt, M.; Reynders, A.; Schoneveld, W.; Schouten, T.; Smit, W.; Verheul, P.; De Vries, N.; G-groep najaar 1993 ","","1993","Document(en) uit de collectie Chemische Procestechnologie","","nl","report","Delft University","","","","","","","2003-11-01","Applied Sciences","DelftChemTech","","","",""
"uuid:b9af7ec6-bdc8-4ca0-a1f4-8968dd004e78","http://resolver.tudelft.nl/uuid:b9af7ec6-bdc8-4ca0-a1f4-8968dd004e78","Produktie van penicilline in een continu proces","Oerlemans, P.; De Vries, W.","","1973","Document uit de collectie Chemische Procestechnologie","","nl","report","Delft University of Technology","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:c0f6c1f8-be5f-455a-9d5c-b94d6acabd60","http://resolver.tudelft.nl/uuid:c0f6c1f8-be5f-455a-9d5c-b94d6acabd60","CERISE - Combineren van energie en ruimte informatie standaarden als enabler voor smart grids - TKI smart grid project: TKISG01010 - D2.1 Use case energy balancing information facility. Werkpakket 20","Verhoosel, J.; Roes, J.; Verbeek, S.; Bruinenberg, J.; van Doorn, L.; Janssen, P.; De Vries, M.E.","","2014","Versie 1.1 – English summary - Final","","en","report","CERISE CG","","","","","","","","Architecture and The Built Environment","OTB Research","","","",""
"uuid:7c2ac576-1571-49bd-8fff-3d84afe3fe72","http://resolver.tudelft.nl/uuid:7c2ac576-1571-49bd-8fff-3d84afe3fe72","The second GML prototype of the new TOP10vector object model","De Vries, M.E.; Tijssen, T.P.M.; Stoter, J.E.; Quak, C.W.; Van Oosterom, P.J.M.","","2002","","","en","report","Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Geodesy, Section GIS Technology","","","","","","","","","","","","",""
"uuid:5cdfe106-d565-4bcc-a460-9754b427b4ec","http://resolver.tudelft.nl/uuid:5cdfe106-d565-4bcc-a460-9754b427b4ec","Berekening van de maximaal toelaatbare stuwdruk in de suskamer van de 27 x 28 cm2 supersone windtunnel met het oog op de belasting van de anti-turbulentiegazen","De Vries, H.","","1970","","","nl","report","Delft University of Technology","","","","","","","","Aerospace Engineering","","","","",""
"uuid:65b45d61-3453-4c2d-9dcb-d35b83f39542","http://resolver.tudelft.nl/uuid:65b45d61-3453-4c2d-9dcb-d35b83f39542","Report Galveston Bay: Flood Risk Reduction Barrier","Jonkman, S.N.; Van Ledden, M.; Lendering, K.T.; Mooyaart, L.; Stoeten, K.J.; De Vries, P.; Willems, A.; De Kort, R.","","2013","The objective of this study is to provide suitable candidate solutions for a storm surge barrier in the Bolivar Roads as part of the Ike Dike system and provide recommendations for further research.","Galveston Bay; Flood Risk Reduction Barrier; Ike dike","en","report","TU Delft","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:7497c981-0013-46b9-951b-87fe13effc83","http://resolver.tudelft.nl/uuid:7497c981-0013-46b9-951b-87fe13effc83","Bereiding van butanol uit acetaldehyde","Jansen, A.; De Vries, A.G.","","1975","Document(en) uit de collectie Chemische Procestechnologie.","","nl","report","Delft University","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:4d009175-4cc4-4a90-881c-9ffb056b0806","http://resolver.tudelft.nl/uuid:4d009175-4cc4-4a90-881c-9ffb056b0806","Final report WP 4.2: Support Structure Concepts for Deep Water Sites: Deliverable D4.2.8 (WP4: offshore foundations and support structures)","De Vries, W.E.; Vemula, N.K.; Passon, P.; Fischer, T.; Kaufer, D.; Matha, D.; Schmidt, B.; Vorpahl, F.","","2011","With the number of offshore wind farms rapidly increasing, in a wide variety of site conditions and using different turbine sizes, the need for alternative support structures other than the conventional monopile structure is apparent and several projects have been realised using other support structure types. In this report the results of Upwind Work Package 4, task 4.2 are reported. The aim of task 4.2 is to develop support structure concepts for large offshore wind turbines and deep water, including bottom mounted very soft and floating structures.","project upwind; integrated wind turbine design","en","report","Upwind","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:7e4a0980-f766-470f-8126-542d03abe9d2","http://resolver.tudelft.nl/uuid:7e4a0980-f766-470f-8126-542d03abe9d2","Information on the Arnhem Sampler (BTMA)","De Vries, M.","","1979","The Subcommittee 6 of the Technical Committee 113 of the International Standardization Organization (ISO) is dealing with measurements of sediment transport in open channels. As a back-ground paper for TC113 this report is written on the BTMA, internationally named the Arnhem Sampler. The BTMA has been developped jointly by Rijkswaterstaat, Directorate Upper Rivers in Arnhem and the Delft Hydraulics Laboratory. The BTMA (Bedload Transport Meter Arnhem) has a relatively long history; the prototype was constructed in the thirties of this century. The BTMA is still in use although insight in the mechanism of bedload transport has been increased. Hence also the insight in the measuring problem and in the use of the BTMA has undergone changes.","BTMA; Arnhem Sampler; sediment transport; measurement; measurement device; bedload transport","en","report","TU Delft, Department of Hydraulic Engineering","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:163242b3-7b51-4f49-9472-5ba284c58b78","http://resolver.tudelft.nl/uuid:163242b3-7b51-4f49-9472-5ba284c58b78","Fabrieksvoorontwerp ter verwerking van varkensdrijfmest tot strooibare korrel","Boone, L.J.; Chiang, T.H.; Gales, V.J.M.; Van Krimpen, J.L.; Van der Poel, N.; Ramhit, H.; Sugeng, D.A.; Syafrinaldi, A.; De Vries, J.","","1991","Document(en) uit de collectie Chemische Procestechnologie.","","nl","report","Delft University","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:954f44ea-d2f7-4cbf-b331-287dcda4828f","http://resolver.tudelft.nl/uuid:954f44ea-d2f7-4cbf-b331-287dcda4828f","De afstelling van de koppelingen tussen de tunneldelen van de supersone windtunnel TVM 270","Boeker, J.; De Vries, H.","","1967","","","nl","report","Delft University of Technology","","","","","","","","Aerospace Engineering","","","","",""
"uuid:4dc1ea2f-6486-48e5-9df0-71705f27f491","http://resolver.tudelft.nl/uuid:4dc1ea2f-6486-48e5-9df0-71705f27f491","Wegwijs in de grondprijs: (on)mogelijkheden om gronduitgifteprijzen voor woningbouw te monitoren","Van der Heijden, H.M.M.; Groetelaers, D.A.; De Vries, P.","","2006","In de praktijk van de woningproductie is er regelmatig discussie over de gronduitgifteprijs: de prijs die de grondexploitant in rekening brengt bij de vastgoedexploitant. Deze discussie spitst zich toe op de prijs die de gemeente (als grondexploitant, bijvoorbeeld in een bouwclaimmodel) in rekening brengt bij projectontwikkelaars. Dit rapport inventariseert welke mogelijkheden er zijn om een beter beeld van deze prijzen te verkrijgen.","grondprijs; woningbouw; vastgoed","nl","report","TU Delft","","","","","","","","OTB Research Institute","","","","",""
"uuid:e5c09911-5b32-403c-af17-d58cd1c30fbe","http://resolver.tudelft.nl/uuid:e5c09911-5b32-403c-af17-d58cd1c30fbe","Isobuteen productie via het Shell liquid phase proces en het Oleflex proces","Van den Hurk, H.; De Vries, H.P.J.","","1991","Document(en) uit de collectie Chemische Procestechnologie","","nl","report","Delft University of Technology","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:13b8565a-9b49-4d35-8897-25b430b5a320","http://resolver.tudelft.nl/uuid:13b8565a-9b49-4d35-8897-25b430b5a320","Use of models for river problems","De Vries, M.","","1993","In Chapter 2 of this report an overview is given on fluvial processes involved in the modelling discussed. Chapter 3 is concerned with scale models, whilst Chapter 4 deals with numerical models. The main problems treated are, firstly, modelling of the water movement, followed by sediment transport and morphology. Attention is also given to the dispersion of dissolved matter and problems associated with ice. The 'tools' for scale models and numerical models are given only little attention. For scale models the tools are instruments and control systems. For numerical models numerical schemes are involved. A good introduction can be found in Vreugdenhil (1989). In Chapter 5 guidance is given on the selection of the type of model for river problems, though this has to be of a general nature.","rivers; hydraulic models; modelling; mathematical models","en","report","Unesco","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:d23c000d-f047-4d69-a56f-7b0b4cf4a654","http://resolver.tudelft.nl/uuid:d23c000d-f047-4d69-a56f-7b0b4cf4a654","Opbrengsten vastgoed Zuidasdok","Korthals Altes, W.K.; Louw, E.; Van der Heijden, H.M.H.; Groetelaers, D.A.; Boumeester, H.; De Vries, P.; Dol, C.P.","","2011","Dit onderzoek verkent wat de mogelijke opbrengsten van het vastgoed zijn bij de ontwikkeling van de Dokzone in de periode 2025-2050. Het is niet gebruikelijk om voor deze termijn opbrengsten te ramen.","Zuidas; Amsterdam; vastgoed; lange termijnramingen","nl","report","Onderzoeksinstituut OTB","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:02591ea1-fdfe-4fce-bd6e-2da367a8bc85","http://resolver.tudelft.nl/uuid:02591ea1-fdfe-4fce-bd6e-2da367a8bc85","A sensitivity analysis applied to morphological computations","De Vries, M.","","1985","In river engineering morphological predictions have to be made to study the implications of changes in a river system due to natural causes or human interference. It regards here time-depending processes. Characteristic parameters of the river have to be forecasted both in time and space. The morphological processes, however, are extremely complex and therefore a substantial degree of schematization is required before e.g. mathematical models can be applied to obtain the predictions wanted. Information about available mathematical models can e.g. be obtained from Jansen (1979) and Klaassen et al (1982). The present physical-mathematical formulation of the morphological problems involved is incomplete. For instance the variation of the width B(x,t) cannot yet be predicted. Therefore in this paper the restriction is made that (relatively) unerodible banks are present. The description of the problem in two (horizontal) space dimensions has not yet led to mathematical models that are used on a routine basis. During the last two decades or so, however, one-dimensional models have been developed gradually to useful tools for practical problems. In these models average values across the width of the river are predicted for the waterlevel h(x,t), the bedlevel z(x,t) and consequently for the water depth a(x,t). There is concern, however, regarding the accuracy of these predictions. Very few possibilities exist to calibrate and verify the mathematical models for a particular river. There are a large number of error sources of which here basicly two will be discussed. Sediment transport s(x,t) has to be predicted from the local hydraulic conditions. Alluvial roughness, for instance expressed in the Chezy coefficient C(x,t), also has to be forecast locally. The available transport predictors and roughness predictors are based on the presence of steady uniform flow. Hence there is already a potential source of errors in applying these predictions in a mathematical model with nonsteady and non-uniform flow. The two types of predictions are linked. In many transport predictors (transport formulae) the alluvial roughness has to be known. As future conditions are considered, this roughness also has to be predicted.","river dynamics; river morphology; morphological computations; bed roughness","en","report","Delft University of Technology","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:5b1f9113-2fee-4fd7-b8a5-ca22ca17cb8d","http://resolver.tudelft.nl/uuid:5b1f9113-2fee-4fd7-b8a5-ca22ca17cb8d","Consequenties van de voorgenomen aanscherping van de hypotheekverstrekking voor het functioneren van de Woningmarkt","Boelhouwer, P.J.; Lamain, C.J.M.; Marien, A.A.A.; De Vries, P.","","2011","","","nl","report","Onderzoeksinstituut OTB","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:cacb4c42-dce3-46b6-99b8-392ff351a26e","http://resolver.tudelft.nl/uuid:cacb4c42-dce3-46b6-99b8-392ff351a26e","D1.1 Inventarisatie Use Cases: Combineren van Energie en Ruimte Informatie Standaarden als Enabler voor Smart Grids","Verhoosel, J.; Roes, J.; Bruinenberg, J.; Van Doorn, L.; Janssen, P.; De Vries, M.; Van Oosterom, P.","","2013","","","nl","report","Cerise SG","","","","","","","","OTB Research Institute for the Built Environment","GIS technology","","","",""
"uuid:d92950e3-b732-4f03-ae40-d1e2cacb90d9","http://resolver.tudelft.nl/uuid:d92950e3-b732-4f03-ae40-d1e2cacb90d9","Open data and beyond: Exploring existing open data projects to prepare a successful open data strategy: Deelrapport Techniek","De Vries, M.E.; Van Oosterom, P.","","2012","Dit deelrapport beschrijft een aantal technische aspecten van open data beleid. Ingegaan wordt op: data preparatie, leveringsmodel, web techniek, open standaarden, begrijpbaarheid, vindbaarheid en gebruikersinteractie. Per aspect (kernthema) wordt een aantal keuze-mogelijkheden voor de implementatie van open data beleid gepresenteerd. Een van de conclusies is dat er niet slechts één implementatie-strategie of één technologie uitrolt als meest optimaal. Er zijn meerdere combinaties tussen de technische aspecten mogelijk, keus voor een optie leidt niet automatisch tot een bepaalde keuze binnen een ander technisch aspect. Er worden tenslotte een aantal punten genoemd en adviezen gegeven voor het vervolgtraject.","open data techniek","nl","report","Onderzoekstinstituut OTB, Technische Universiteit Delft","","","","","","","","OTB Research Institute for the Built Environment","","","","",""
"uuid:a36742d6-697a-44be-9e96-5f614f39c2cd","http://resolver.tudelft.nl/uuid:a36742d6-697a-44be-9e96-5f614f39c2cd","Privacy op zijn plaats: Tussen willen weten en wetten","Van Oortmarssen, A.; De Vries, M.; Van Loenen, B.","","2015","Witboek over de spanning tussen privacyregels en het realiseren van het locatie-informatie potentieel. Dataficatie en locatie-informatie: een wereld die open gaat Ons spectaculair toegenomen vermogen data te genereren, transporteren, analyseren en weer te distribueren luidt een nieuw tijdperk in. Geo-informatie – en locatie-informatie in het bijzonder – is daarbij het oliemannetje: het stelt ons in staat data uit verschillende bronnen aan elkaar te relateren. Dit schept ongekende mogelijkheden voor overheden, bedrijven en burgers, maar uiteraard creeërt het ook nieuwe uitdagingen. Een daarvan is dat met behulp van (het koppelen met) locatie-informatie een steeds gedetailleerder beeld valt te maken van personen. En dat breekt rechtstreeks in op een goed dat ons veel waard is: het recht op privacy. Bescherming van persoonsgegevens is een andere wereld De wereld van de bescherming van de persoonsgegevens is een andere dan die van de dataficatie. Die eerste wordt vooral bewoond door juristen en is gericht op het onder strikte voorwaarden delen van locatie-informatie zodra deze onder het bereik van een van de wettelijke regelingen valt. Deze wettelijke regimes zijn evenwel niet gemakkelijk toe te passen, onder meer doordat de semantiek, die bepalend is voor de toepasselijkheid van de regels, verwarrend is, doordat de normen zeer abstract zijn en, wellicht nog wel het belangrijkste, doordat sommige gemaakte keuzes ingehaald lijken te zijn door de ontwikkelingen in de technologie. De praktijk: voorzichtig proberen en experimenteren Niettemin, op diverse plaatsen binnen de overheid – en ook daarbuiten uiteraard – wordt druk geëxperimenteerd met locatie-informatie. Dat men daarbij de regels rond bescherming van persoonsgegevens in acht moet nemen, is goed bekend. Evenwel is de concrete toepassing van de regels op het voorgenomen gebruik van de locatie-informatie voor velen een black box: men snapt de regels niet en vindt ze veel te abstract.","open data; privacy; gegevensbescherming; geo-informatie","nl","report","Geonovum","","","","","","","2015-04-02","Architecture and The Built Environment","OTB","","","",""
"uuid:aad44d37-763f-4628-93e0-37b0288718d1","http://resolver.tudelft.nl/uuid:aad44d37-763f-4628-93e0-37b0288718d1","Planningspraktijken in Vlaanderen en Nederland:groeien ze naar elkaar toe?","De Jong, M.; De Vries, J.","","2003","De Rijksplanologische Dienst (thans het DG Ruimte) wil weten wat er gebeurt met ruimtelijke planningsstelsels onder de invloed van de EU en Europa zonder grenzen. De Delftse onderzoekers Martin de Jong en Jochem de Vries hebben zich verdiept in de Vlaamse wereld van de ruimtelijke planning. Ze onderzochten of beleidsoverdracht vanuit Nederland plaats heeft gevonden en hoe dat werkte. Door de gemeenschappelijke taal zou dat toch geen al te grote problemen moeten geven. Ze beschrijven de verschillende bestuursculturen en constateren, dat de Vlamingen voor hun Ruimtelijk Structuurplan uit 1997 van o.a. de Nederlanders geleerd hebben, maar dat de Nederlandse planners nogal op zichzelf gericht zijn. Ze bevelen aan om meer kennis uit te wisselen, met name bij grensoverschrijdende projecten.","","nl","report","Delft University of Technology, OTB","","","","","","","","OTB","","","","",""
"uuid:822c5680-33f6-4bc9-9818-639bd5842bad","http://resolver.tudelft.nl/uuid:822c5680-33f6-4bc9-9818-639bd5842bad","An R-curve approach to fracture toughness analysis of some GLARE grades","De Vries, T.J.; Holleman, E.","","1995","","","en","report","Delft University of Technology","","","","","","","","Aerospace Engineering","","","","",""
"uuid:c94193e1-e96a-47a7-8ba8-bef213d4d583","http://resolver.tudelft.nl/uuid:c94193e1-e96a-47a7-8ba8-bef213d4d583","Fabricage van T.N.T.","De Vries, H.J.","","1958","Document(en) uit de collectie Chemische Procestechnologie","","nl","report","Delft University","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:a2b627a3-e9ce-47d6-9078-d60807b48fb7","http://resolver.tudelft.nl/uuid:a2b627a3-e9ce-47d6-9078-d60807b48fb7","3D spatial infrastructure for the Port of Rotterdam","Zlatanova, S.; Beetz, J.; Goos, J.; Mulder, A.; Boersma, A.J.; Schevers, H.; De Vries, M.E.; Ghawana, T.","","2014","This report presents the investigations, developments and the result of the project 3D spatial data infrastructure, funded by Next Generation Infrastructures, Maasvlakte 2.","spatial infrastructure; Port of Rotterdam; Maasvlakte 2","nl","report","Delft University of Technology, OTB Research Institute for the Built Environment","","","","","","","","Architecture and The Built Environment","OTB","","","",""
"uuid:8e426964-4dd6-4274-a68c-9886d27b0855","http://resolver.tudelft.nl/uuid:8e426964-4dd6-4274-a68c-9886d27b0855","Synthese van aceetaldol uit aceetaldehyde","Legerstee, J.J.; De Vries, E.B.","","1976","Document(en) uit de collectie Chemische Procestechnologie.","","nl","report","Delft University","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:87b71261-305f-4c9f-acd8-b0c48a6a2dcf","http://resolver.tudelft.nl/uuid:87b71261-305f-4c9f-acd8-b0c48a6a2dcf","Technische universiteiten en duurzame ontwikkeling in Afrika: Een interfacultair studenten onderzoeksproject voor het 33e lustrumsymposium van de Technische Universiteit Delft","De Vries, G.; Wessels, R.","Duijvestein, C.A.J. (contributor); de Vries, G. (contributor); Bos, M. (contributor); Cozijnse, K. (contributor); Findlater, J.W. (contributor); Fremouw, M. (contributor); Jonkman, J. (contributor); Oijevaar, K. (contributor); Peters, S. (contributor); van Rattinghe, K. (contributor); Sack-van Straaten, K. (contributor)","2007","In 2007, Delft University of Technology celebrates its 165th birthday. This unique occasion is celebrated with several activities revolving around the subject ""Sustainable Solutions, with a focus on Africa"". For the interdisciplinary course ""Technical Universities and Sustainable development of Africa"" a group of eight students under supervision of prof. Ir. C.A.J. Duijvestein and drs. ing. G. de Vries of Delft University of Technology attempted to find an answer to the question: ""What can technical universities contribute to sustainable development, especially with regard to Africa?"" This report contains the results of this course. Its goal is to create more awareness for the students of Delft University of Technology and their employees on the sustainable development of Africa. First, global models like the Millennium goals, the Ecological Footprint, the Environmental Sustainability Index and the Environmental Performance Index were researched in order to find keystones for answering this question. In what way do these models take technology development into account? Which topics would be interesting for technical universities? Do the models just analyze or do they also give solutions for improvements? Generally, there are two classes of models: The analytic model, which looks at the past and the current situation, and the objective based model, which sets goals for the future and the way to get there. For example, the Environmental Sustainability Index (ESI) and the Environmental Performance Index (EPI) are true analytic models whereas the Millennium Development Goals model is an objective based one. The objective models give technical universities a much clearer direction on which they should focus in the future. Besides, engineers work better with goals, because they are trained in solution thinking. The analytic models are used mostly to analyze the development of the objective models and check whether they give a positive result. The target of all models is to increase understanding of a difficult theme and analyse it on a country level. These models and the data they are based on will give the policy makers of these countries greater awareness of the positive and negative developments in their country. In a way they can be considered a kind of marketing tool to ask attention for a certain subject. The original goal of the models is not to create research assignments for technical universities; they are intended to give direction to the development of a country and bring about policy changes on a national level. Even though a lot of technical solutions lie on the local level, there are several returning global topics which are relevant to technical universities. - Water management Technical universities can look into solutions to guarantee both proper water quality and quantity, therefore preventing water stress. Research should cover the access to clean drinking water, good sanitation and sustainable irrigation for the inhabitants as well as reducing the water use by industrial processes. - Energy Where energy is concerned, topics found in the models are the reduction of primary energy usage, the reduction of energy usage of products and the development of renewable energy sources. Technical universities can research these problems and help define solutions. - Food Technical universities can search for methods to increase the crop yield per unit of surface. - Health Although health does not look like a topic befitting a technical university, it is possible that technical solutions could be given for solving health problems. Examples are guaranteeing a good indoor climate, developing good health care appliances or increasing the life expectancy of people by improving sanitation measures and other means.","","en","report","Technische Universiteit Delft, Faculteit Bouwkunde, Afdeling Urbanism","","","","","","","","Architecture","","","","",""
"uuid:04b3bcf1-4093-444e-aa23-570eafee119d","http://resolver.tudelft.nl/uuid:04b3bcf1-4093-444e-aa23-570eafee119d","Reactor effluent verwerking met behulp van absorber en destillatiekolom","Van Ee, B.M.; Cornelisse, B.; Allebrandi, M.J.; Van Heurn, J.W.F.; Van der Linden, J.P.; Linssen, R.J.; Van der Ploeg, H.J.; Ris, M.; Risseeuw, I.J.; Schaart, B.; De Vries, L.; Wetzel, R.W.A.","","1981","Document uit de collectie Chemische Procestechnologie","","nl","report","Delft University of Technology","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:05dac540-af7e-4be5-9890-e2f5885ecabe","http://resolver.tudelft.nl/uuid:05dac540-af7e-4be5-9890-e2f5885ecabe","Zoetwatersituatie in de zuidwestelijke Delta","Reijs, T.; Bouman, G.; De Vries, I.; Otter, H.","","2005","In juni 2003 heeft het Kabinet definitief besloten om de Haringvlietsluizen op een kier te zetten. In de brief waarin staatssecretaris Schultz (V&W) en minister Veerman (LNV) de provincies op de hoogte stellen staat een oproep aan de drie provincies: “De Delta kent een aantal complexe vraagstukken, die vragen om een oplossing. Het Kabinet is van mening dat het streven naar een meer natuurlijke Delta, inclusief de versterking van natuurlijke processen en het op termijn terugbrengen van getij in het Haringvliet/Hollands Diep, gekoppeld moet worden aan een meer natuurlijke, duurzame zoetwatersituatie voor de landbouw. Op basis van de visie ‘Delta in Zicht’ is een fundamentele discussie hierover in de Zeeuwse, Zuid-Hollandse en Noord-Brabantse Delta noodzakelijk. Wij achten het van groot belang dat de provincies, in samenwerking met het Rijk, het initiatief nemen om dit vraagstuk samen met andere belanghebbenden nader te verkennen”.","Delft Cluster; CT07.30; zoetwatersituatie; CT07.30.00; zuidwestelijke Delta; Delta; leven met water","nl","report","Delft Cluster","","","","","","","","","","","","",""
"uuid:9e3f1483-92d6-4e7d-a952-3eccf4961164","http://resolver.tudelft.nl/uuid:9e3f1483-92d6-4e7d-a952-3eccf4961164","Verslag behorende bij het processchema: Bereiding van zwavel door partiële oxidatie van zwavelwaterstof","De Vries, P.H.","","1964","Document(en) uit de collectie Chemische Procestechnologie","","nl","report","Delft University","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:7ff42174-70ab-459d-b709-3bab9c2f9c4b","http://resolver.tudelft.nl/uuid:7ff42174-70ab-459d-b709-3bab9c2f9c4b","Executive summary (WP4: Offshore foundations and support structures)","Fischer, T.; De Vries, W.E.; Cordle, A.","","2011","","project upwind; integrated wind turbine design","en","report","Upwind","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:1078fb13-33df-42b3-9186-dd3dacdeae78","http://resolver.tudelft.nl/uuid:1078fb13-33df-42b3-9186-dd3dacdeae78","The GML prototype of the new TOP10vector object model","De Vries, M.E.; Tijssen, T.P.M.; Stoter, J.E.; Quak, C.W.; Van Oosterom, P.J.M.","","2001","","","en","report","Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Geodesy, Section GIS Technology","","","","","","","","","","","","",""
"uuid:b512da7f-e2bf-4556-a1f2-3089ea4aa99c","http://resolver.tudelft.nl/uuid:b512da7f-e2bf-4556-a1f2-3089ea4aa99c","R-curve testdata: 2024-T3, 7075-T6, GLARE 2 and GLARE 3","De Vries, T.J.; Vermeeren, C.A.J.R.","","1994","","","en","report","Delft University of Technology","","","","","","","","Aerospace Engineering","","","","",""
"uuid:6fba2844-549d-4050-b888-d20abe85fe1b","http://resolver.tudelft.nl/uuid:6fba2844-549d-4050-b888-d20abe85fe1b","Reinigen van de restgassen van de salpeterzuurbereiding","De Vries, H.J.; Booijen, J.C.","","1968","Document(en) uit de collectie Chemische Procestechnologie","","nl","report","Delft University of Technology","","","","","","","","Applied Sciences","DelftChemTech","","","",""
"uuid:72a41aeb-22e1-49b8-8cc9-977e26f5acb5","http://resolver.tudelft.nl/uuid:72a41aeb-22e1-49b8-8cc9-977e26f5acb5","Visitatierapport Woonpartners. Deel 1: Maatschappelijke prestaties","Vermunt-Bastiaansen, A.; De Vries, P.; Hoekstra, J.S.C.M.","","2011","Verantwoording op basis van de methodiek van de Stichting Visitatie Woningcorporaties Nederland.","","nl","report","Kwaliteitscentrum Woningcorporaties Huursector (KWH)","","","","","","","","OTB Research Institute for the Built Environment","OTB Research","","","",""
"uuid:de68357b-86e4-45dc-9082-823ea8590c82","http://resolver.tudelft.nl/uuid:de68357b-86e4-45dc-9082-823ea8590c82","D1.3 Inventarisatie Standaardisatieveld Energie, Geo en Overheidsdomein: Combineren van Energie en Ruimte Informatie Standaarden als Enabler voor Smart Grids","Verhoosel, J.; Janssen, P.; De Vries, M.","","2013","","","nl","report","Cerise SG","","","","","","","","OTB Research Institute for the Built Environment","GIS technology","","","",""
"uuid:d0f262d9-ab07-4ae7-839d-782727c534af","http://resolver.tudelft.nl/uuid:d0f262d9-ab07-4ae7-839d-782727c534af","Flowscapes: Infrastructure as landscape, landscape as infrastructure. Graduation Lab Landscape Architecture 2012/2013","Nijhuis, S.; Jauslin, D.; De Vries, C.","","2012","Flowscapes explores infrastructure as a type of landscape and landscape as a type of infrastructure, and is focused on landscape architectonic design of transportation-, green- and water infrastructures. These landscape infrastructures are considered armatures for urban and rural development. With movement and flows at the core, these landscape infrastructures facilitate aesthetic, functional, social and ecological relationships between natural and human systems. Through transdisciplinary design-based case studies at different scale levels Flowscapes seeks for a better understanding of the dynamic between landscape processes and typo-morphological aspects; here interpreted as flowscapes.","landscape architecture; landscape infrastructure; landscape urbanism; green infrastructure; transportation infrastructure; water infrastructure; design research; flowscapes; graduation studio; urbanism; architecture; civil engineering","en","report","Delft University of Technology","","","","","","","2012-09-18","Architecture","Urbanism","","","",""
"uuid:2ae40173-3c72-4370-90c1-ea790f012bc9","http://resolver.tudelft.nl/uuid:2ae40173-3c72-4370-90c1-ea790f012bc9","Design Charette of the Don River watershed; final report","Steegers, K.; Kalnpure, A.; De Vries, V.; Niel, L.; Margolis, L.; Roggema, R.; Van Loon, F.D.","","2015","On May the 29th the Consulate General of the Kingdom of the Netherlands in Toronto and Waterfront Toronto hosted the Canada – Netherlands Resilient Cities Summit: ‘Planning and Design in a Changing Climate’. Before and in parallel to this summit, a collaborative student design charrette, including students from Delft University of Technology and the University of Toronto took place. The results of this design charrette were presented as part of the Summit program.","","en","report","Delft University of Technology","","","","","","","","Architecture and The Built Environment","Urbanism","","","",""
"uuid:d2040e39-39e8-4f70-8bf7-11abdce585ae","http://resolver.tudelft.nl/uuid:d2040e39-39e8-4f70-8bf7-11abdce585ae","Routekaart Energieopslag 2030: Systeemintegratie en de rol van energieopslag","Verzijlbergh, R.A. (TU Delft Energie and Industrie); De Vries, Laurens (TU Delft Energie and Industrie); Herder, P.M. (TU Delft Energie and Industrie)","","2015","","","en","report","DNV-GL","","","","","","","","","","Energie and Industrie","","",""
"uuid:bd11e15d-fe7c-4ac1-a77d-a2a358daefa1","http://resolver.tudelft.nl/uuid:bd11e15d-fe7c-4ac1-a77d-a2a358daefa1","Review of wind generation within adequacy calculations and capacity markets for different power systems","Söder, Lennart (KTH Royal Institute of Technology); Tómasson, Egill (KTH Royal Institute of Technology); Estanqueiro, Ana (Laboratório Nacional de Energia e Geologia); Flynn, Damian (University College Dublin); Hodge, Bri Mathias (University of Colorado); Couto, António (Laboratório Nacional de Energia e Geologia); Pudjianto, Danny (Imperial College London); Strbac, Goran (Imperial College London); De Vries, Laurens (TU Delft Energie and Industrie)","","2019","The integration of renewable energy sources, including wind power, in the adequacy assessment of electricity generation capacity becomes increasingly important as renewable energy generation increases in volume and replaces conventional power plants. The contribution of wind power to cover the electricity demand is less certain than conventional power sources; therefore, the capacity value of wind power is smaller than that of conventional plants. This article presents an overview of the adequacy challenge, how wind power is handled in the regulation of capacity adequacy, and how wind power is treated in a selection of jurisdictions. The jurisdictions included in the overview are Sweden, Great Britain, France, Ireland, United States (PJM and ERCOT), Finland, Portugal, Spain, Norway, Denmark, Belgium, Germany, Italy and the Netherlands.","Adequacy; Capacity credit; Capacity markets; Market integration; Power system; Wind power","en","review","","","","","","","","","","","Energie and Industrie","","",""
"uuid:09dcbbf9-dd76-4f3f-9563-6f3624172897","http://resolver.tudelft.nl/uuid:09dcbbf9-dd76-4f3f-9563-6f3624172897","Participation of active consumers in the electricity system: Design choices for consumer governance","Pelka, S. (TU Delft Energie and Industrie; Fraunhofer Institute for Systems and Innovation Research ISI); Chappin, E.J.L. (TU Delft Energie and Industrie); Klobasa, M. (Fraunhofer Institute for Systems and Innovation Research ISI); De Vries, Laurens (TU Delft Energie and Industrie)","","2022","Household electricity use has an increasing impact on the overall energy system. Numerous proposals have been made to support households to consume electricity in a system-friendlier manner. By breaking these proposals down into functions and how they are performed, this paper identifies four distinctive governance designs: energy communities, variable electricity tariffs, local energy markets and virtual power plants. None covers all the functions required and each addresses different trade-offs that households face. Energy communities focus on investing in energy assets, while the others target the operation of households’ assets, including demand response. Virtual power plants attract profit-oriented consumers, while the others primarily target normative consumers.","Demand response; Distributed energy resources; Energy community; Energy market design; Local energy market; Variable tariff; Virtual power plant","en","review","","","","","","","","","","","Energie and Industrie","","",""