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Hoekstra, J.S.C.M. (author)International comparative housing research usually takes countries as a unit of analysis. Studies in the field typically connect housing outcomes at the national level to national welfare state and housing regimes. However, as a result of both supranational developments (globalization, financialization, neoliberalization, European Union...conference paper 2019
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Groen, Brenda (author), van der Voordt, Theo (author), Hoekstra, B.S. (author), van Sprang, Hester (author)Purpose: This paper aims to explore the relationship between satisfaction with buildings, facilities and services and perceived productivity support and to test whether the findings from a similar study of Batenburg and Van der Voordt (2008) are confirmed in a repeat study after 10 years with more recent data. Design/methodology/approach:...journal article 2019
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Sun, Junzi (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)Open access to flight data from Automatic Dependent Surveillance-Broadcast (ADS-B) has provided researchers with more insights for air traffic management than aircraft tracking alone. With large quantities of trajectory data collected from a wide range of different aircraft types, it is possible to extract accurate aircraft performance...journal article 2019
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Metz, I.C. (author), Mühlhausen, Thorsten (author), Ellerbroek, Joost (author), Kügler, Dirk (author), Hoekstra, J.M. (author)This paper presents a collision avoidance algorithm to prevent bird strikes for aircraft departing from an airport. By using trajectory-information of aircraft and birds, the algorithm predicts potential collisions. Collision avoidance is performed by delaying departing aircraft until they can follow a collision-free trajectory. An...conference paper 2019
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Low carbon heating and cooling by combining various technologies with Aquifer Thermal Energy StoragePellegrini, M. (author), Bloemendal, Martin (author), Hoekstra, N. (author), Spaak, G. (author), Andreu Gallego, A. (author), Rodriguez Comins, J. (author), Grotenhuis, T. (author), Picone, S. (author), Murrell, A. J. (author)A transition to a low carbon energy system is needed to respond to global challenge of climate change mitigation. Aquifer Thermal Energy Storage (ATES) is a technology with worldwide potential to provide sustainable space heating and cooling by (seasonal) storage and recovery of heat in the subsurface. However, adoption of ATES varies strongly...journal article 2019
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Sun, Junzi (author), Vû, Huy (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)The availability of low-cost automatic dependent surveillance-broadcast (ADS-B) receivers has given researchers the ability to make use of large amounts of aircraft state data. This data is being used to support air transportation research in performance study, trajectory prediction, procedure analysis, and airspace design. However, aircraft...journal article 2019
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Sun, Junzi (author), Hoekstra, J.M. (author)A large quantity of Mode S data is being gathered by the OpenSky receiver network every day. Information regarding common flight states, such as position, ground speed, and the vertical rate is broadcast by ADS-B and has already been decoded and made available for researchers via the OpenSky historical database. However, there is still a...conference paper 2019
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Sun, Junzi (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)The Automatic Dependent Surveillance-Broadcast (ADS-B) data has become one of the most popular sources of data for trajectory-based ATM studies. It is can be received in most of the world without restrictions. Extended coverage can be achieved with a network of low-cost receivers and satellites. However, the fact that ADS-B is designed to...conference paper 2019
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Analysis of Conflict Resolution Methods for Manned and Unmanned Aviation Using Fast-Time SimulationsRibeiro, M.J. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)In the coming years, aviation will have to cope with an increase in the number of aircraft, and of drones purchased in the open market. The human intervention of Air Traffic Management (ATM) will be overburden with guaranteeing flight safety with hundreds of manned aircraft and Unmanned Aerial Vehicles (UAVs) operating simultaneously. Conflict...conference paper 2019
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Litheko, Olebogeng (author), Marais, Lochner (author), Hoekstra, J.S.C.M. (author), Cloete, Jan (author), Lenka, Molefi (author)Asset-building policies are used worldwide to reduce state welfare commitments. In the Global South, including South Africa, asset-based housing development is thought to help reduce poverty. This study investigated asset building and homeownership in a sample of South Africa’s emerging black middle class. Interviews with 244 black middle-class...journal article 2019
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Kragt, Augustinus J.J. (author), Hoekstra, Davey C. (author), Stallinga, S. (author), Broer, Dirk J. (author), Schenning, Albertus P.H.J. (author)Engineering the helical structure of chiral photonic materials in three dimensions remains a challenge. 3D helix engineered photonic materials are fabricated by local stratification in a photopolymerizable chiral nematic liquid crystal. The obtained chiral photonic materials reflect both handedness of circular polarized light and show super...journal article 2019
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Rudnyk, I. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)To facilitate the increasing amount of air traffic, current and future decision support tools for air traffic management require an efficient and accurate trajectory prediction. With uncertainty inherent to almost all inputs of a trajectory predictor, the accurate prediction is not a simple task. In this study, Monte Carlo simulations of a...journal article 2019
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Sunil, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Maas, J.B. (author)This paper presents analytical models that describe the safety of unstructured and layered en route airspace designs. Here, ‘unstructured airspace’ refers to airspace designs that offer operators complete freedom in path planning, whereas ‘layered airspace’ refers to airspace concepts that utilize heading-altitude rules to vertically separate...journal article 2018
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A. Petrovsky, A. (author), Doole, M.M. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Tomasello, F. (author)The objective of this paper is to raise awareness about the significance of collecting and ensuring the quality of the obstacle data required for the safety of air navigation for both manned and unmanned aviation. This information could be of importance to geodetic, CityGML, 3D model and Building Information Management (BIM) community. With the...conference paper 2018
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- Dodge, Eric (author), Hoekstra, Arjen (author), Stoner, Michael (author) conference paper 2018
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Hoekstra, M.J. (author)The realisation of an urban design involves many players, such as designers, critics, politicians, journalists, public relations specialists and residents. In order to consult with each other they make use of drawings, but also frequently of words, to be able to interpret the drawn objects in the plans. But are these urbanistic notions used by...doctoral thesis 2018
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- van Ginkel, D.H. (author), Hoekstra, J.S.C.M. (author), van de Kreeke, J.M. (author), Dankert, R. (author) report 2018
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Vanwelsenaere, Alexander (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Westerveld, E (author)To assess the effect of flights departing within the horizon of the extended arrival manager (so-called popup flights), fast-time simulations are performed using an arrival manager research model. This model is tailored for operations at Amsterdam Schiphol Airport and integrated in BlueSky, which is an open-source air traffic management...journal article 2018
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Vanham, D. (author), Hoekstra, A (author), Wada, Y (author), Bouraoui, F. (author), de Roo, A. (author), Mekonnen, M. M. (author), van de Bund, W. J. (author), Batelaan, O. (author), Pavelic, P. (author), Bastiaanssen, W.G.M. (author), Kummu, M (author), Rockström, J. (author), Liu, J. (author), Bisselink, B. (author), Ronco, P. (author), Pistocchi, A. (author), Bidoglio, G. (author)Target 6.4 of the recently adopted Sustainable Development Goals (SDGs) deals with the reduction of water scarcity. To monitor progress towards this target, two indicators are used: Indicator 6.4.1 measuring water use efficiency and 6.4.2 measuring the level of water stress (WS). This paper aims to identify whether the currently proposed...review 2018
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Hoekstra, J.S.C.M. (author), Elsinga, M.G. (author), Haffner, M.E.A. (author), Dol, C.P. (author)This report and its Annex present the results of the research project “Promoting the contribution of private savings to pension adequacy: Integrating residential property with private pensions in the EU” led by iff, institute for financial services, Hamburg. Financial support by the European Commission, DG Employment, Social Affairs and...report 2018