Searched for: collection%3Air
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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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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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Hoekstra, J.S.C.M. (author), Gentili, 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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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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Sun, J. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
Aircraft mass is a crucial piece of information for studies on aircraft performance, trajectory prediction, and many other topics of aircraft traffic management. However, It is a common challenge for researchers, as well as air traffic control, to access this proprietary information. Previously, several studies have proposed methods to estimate...
journal article 2018
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Metz, I.C. (author), Muhlhausen, Thorsten (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
Bird strikes have the potential to cause severe damage to aircraft. Therefore, measures to reduce the risk of bird strikes are performed at airports. However, this risk is not limited to the airport but is increased in the arrival and departure corridors as well. Consequently, a significant amount of bird strikes occurs outside the direct...
abstract 2018
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Rudnyk, I. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
conference paper 2018
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Rudnyk, I. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
conference paper 2018
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Hoekstra, A.T.G. (author), Twisk, D. A M (author), Hagenzieker, M.P. (author)
Research in different domains has shown that people categorize oneself and others as ingroup (“us”) and outgroup (“them”) members, resulting in group-based stereotyping and attribution errors that may adversely affect social behaviour. To determine whether such patterns also exist in road traffic, we conducted an experimental web-based survey...
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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Sun, J. (author), Vû, Huy (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
Wind and temperature data are important parameters in aircraft performance studies. The lack of accurate measurements of these parameters forces researchers to rely on numerical weather prediction models, which are often filtered for a larger area with decreased local accuracy. Aircraft, however, also transmit information related to weather...
journal article 2018
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Hoekstra, M. (author)
Currently wastewater treatment plants (WWTP) consume a lot of energy and surface area. While the incoming water contains chemical energy (BOD) and reusable resources which are not effectively utilized. The ideal is to develop a treatment scheme which allows for the efficient removal of pollutants while minimizing the energy input and maximizing...
doctoral thesis 2017
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Hoekstra, M. (author), de Weerd, F.A. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
The implementation of autotrophic nitrogen removal in the mainstream of a municipal wastewater treatment plant is currently pursued. Among the crucial unknown factors are the kinetic properties of anaerobic ammonium oxidising (anammox) bacteria at low temperatures. In this study we investigated the adaptation of a fast-growing anammox culture...
journal article 2017
Searched for: collection%3Air
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