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Sun, J. (author), Blom, H.A.P. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
This article investigates the estimation of aircraft mass and thrust settings of departing aircraft using a recursive Bayesian method called particle filtering. The method is based on a nonlinear state-space system derived from aircraft point-mass performance models. Using only aircraft surveillance data, flight states such as position,...
journal article 2019
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Cazaux, S.M. (author), Arribard, Yann (author), Egorov, D. (author), Palotás, Julianna (author), Hoekstra, Ronnie (author), Berden, Giel (author), Oomens, Jos (author), Schlathölter, Thomas (author)
The solar magnetic field (SMF) has historically been considered as dipole in order to build models of the radially expanding corona, that is, the solar wind in the solar minimum. The simplified approach suggests the existence of only one quasi-stationary current sheet (QCS) of solar origin in the heliosphere, namely, the heliospheric current...
journal article 2019
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Picone, S. (author), Bloemendal, J.M. (author), Pellegrini, M. (author), Hoekstra, N. (author), Andreu Gallego, A. (author), Rodriguez Comins, J. (author), Murrel, A. (author)
Aquifer Thermal Energy Storage (ATES) system make use of the groundwater to exchange energy with the building: in winter, groundwater is pumped from the warm well to the buildings heat exchanger and the building extracts heat from the groundwater as energy source for the heat pumps, while the groundwater will be injected in the cold well at...
conference paper 2019
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Pellegrini, M. (author), Bloemendal, J.M. (author), Hoekstra, N. (author), Spaak, G. (author), Andreu Gallego, A. (author), Rodriguez Comins, J. (author), Grotenhuis, Tim C. (author), Picone, S. (author), Murrell, A. J. (author), More Authors (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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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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Sun, J. (author), Ellerbroek, J. (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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Sunil, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (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, J. (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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Deng, W. (author), Hoekstra, J.S.C.M. (author), Elsinga, M.G. (author)
After three decades of housing reform in China, housing assets constitute a sizable share of family wealth but are distributed unevenly, as registered homeowners are predominantly male. This is partly because males generally have higher incomes than females and can therefore contribute more to the financing, but also because males receive more...
journal article 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, J. (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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Gentili, M. (author), Hoekstra, J.S.C.M. (author)
According to basic economics, when vacancy rates rise, house prices should decrease and vice versa, responding to supply and demand mechanisms. However, previous studies have observed that, before the economic crisis, this was not the case in Spain and Malta. It has been questioned whether this paradox is a Mediterranean phenomenon or simply the...
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
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Hoekstra, J.S.C.M. (author), Elsinga, M.G. (author), Haffner, M.E.A. (author), Dol, C.P. (author)
This Annex together with the final report 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...
report 2018
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Marais, Lochner (author), Hoekstra, J.S.C.M. (author), Napier, Mark (author), Cloete, Jan (author), Lenka, Molefi (author)
Under apartheid, black African households could not own land or homes in most
major urban centres in South Africa. This limited residential mobility and locked many households into state rental accommodation in townships. Homeownership for all South Africans was restored in the mid-1980 s and the Group Areas Act was repealed in 1991.
journal article 2018
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van Driel, B.A. (author), Artesani, A. (author), van den Berg, Klaas Jan (author), Dik, J. (author), Mosca, S. (author), Rossenaar, B. (author), Hoekstra, J. (author), Davies, A. (author), Nevin, A. (author), Valentini, G. (author), Comelli, D. (author)
This work reports the analysis of the time-resolved photoluminescence behaviour on the nanosecond and microsecond time scale of fourteen historical and contemporary titanium white pigments. The pigments were produced with different production methods and post-production treatments, giving rise to a remarkable variability of titanium dioxide...
journal article 2018
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Hoekstra, M. (author), Geilvoet, Stefan P. (author), Hendrickx, Tim L.G. (author), van Erp Taalman Kip, Charlotte S. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
while at...
journal article 2018
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