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Lebègue, J. (author), Guitart, Andréas (author), Demouge, Céline (author), Delahaye, Daniel (author), Hoekstra, J.M. (author), Feron, Eric (author)
Weather obstacles in the airspace can interfere with an aircraft’s flight plan. Pilots, assisted by air traffic controllers (ATCs), perform avoidance maneuvers that can be optimized. This paper addresses the generation of alternative aircraft trajectories to resolve unexpected events. The authors propose a solution based on the RRG algorithm,...
conference paper 2024
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Lebègue, J. (author), Delahaye, Daniel (author), Hoekstra, J.M. (author)
Many transportation networks have complex infrastructures (road, rail, airspace, etc.). The quality of service in air transportation depends on weather conditions. Technical failures of the aircraft, bad weather conditions, strike of the company’s staff cause delays and disrupt traffic. How can the robustness of such networks be improved?...
conference paper 2024
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van Schaik, L. (author), Duives, D.C. (author), Hoogendoorn-Lanser, S. (author), Hoekstra, Jan Willem (author), Daamen, W. (author), Gavriilidou, A. (author), Krishnakumari, P.K. (author), Rinaldi, M. (author), Hoogendoorn, S.P. (author)
Physical distancing has been an important asset in limiting the SARS-CoV-2 virus spread during the COVID-19 pandemic. This study aims to assess compliance with physical distancing and to evaluate the combination of observed and self-reported data used. This research shows that it is difficult to operationalize new rules, that context affects...
journal article 2024
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Groot, D.J. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)
Conventional Air Traffic Control is still predominantly being done by human Air Traffic Controllers, however, as the traffic density increases, the workload of the controllers increases as well. Especially for the area of unmanned aviation, driven by the rise in drones, having human controllers might become unfeasible. One of the methods that...
journal article 2024
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Meulah, Brice (author), Oyibo, P.O. (author), Hoekstra, Pytsje T. (author), Mour, Paul Alvyn Nguema (author), Maloum, Moustapha Nzamba (author), Laclong Lontchi, Roméo Aimé (author), Honkpehedji, Yabo Josiane (author), Bengtson, Michel (author), Hokke, Cornelis (author), Diehl, J.C. (author)
Introduction<br/>Schistosomiasis is a significant public health concern, especially in Sub-Saharan Africa. Conventional microscopy is the standard diagnostic method in resource-limited settings, but with limitations, such as the need for expert microscopists. An automated digital microscope with artificial intelligence (Schistoscope), offers a...
journal article 2024
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Hoekstra, Mirjam E. (author), Slagter, Maarten (author), Urbanus, Jos (author), Toebes, Mireille (author), Slingerland, Nadine (author), de Rink, Iris (author), Kluin, Roelof J.C. (author), Nieuwland, Marja (author), Wessels, L.F.A. (author)
Cells in the tumor microenvironment (TME) influence each other through secretion and sensing of soluble mediators, such as cytokines and chemokines. While signaling of interferon γ (IFNγ) and tumor necrosis factor α (TNFα) is integral to anti-tumor immune responses, our understanding of the spatiotemporal behavior of these cytokines is...
journal article 2024
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Orobio de Castro, S.A. (author), Daamen, T.A. (author), Hoekstra, J.S.C.M. (author)
Van bruin naar rood: het bouwen van woningen op veehouderijlocaties vormt een uitweg uit de stikstofproblematiek die Nederland in de greep houdt. Uiteraard is deze stap complex en gevoelig, maar op bepaalde locaties is het toch heel goed mogelijk. TU Delft-afstudeerder Samuel Orobio de Castro deed onderzoek naar de kansen en randvoorwaarden, met...
report 2023
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Gentili, M. (author), Hoekstra, J.S.C.M. (author)
The current document is the result of the research activities carried out in Work Package 3 (WP3) of the UPLIFT project1 in Amsterdam, the Netherlands. It aims to understand which micro, meso and macro level factors influence vulnerable young people's decisions in education, employment and housing, and how these young people create their own...
report 2023
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Hoekstra, J.S.C.M. (author), Gentili, M. (author)
For young adults on the Amsterdam housing market the accessibility of housing has been decreasing for years, due to soaring house prices and rents, the shrinkage and residualization of the social rental sector, and the precarization of the labor market. Consequently, many young people struggle to secure an affordable and adequate dwelling and...
journal article 2023
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Hoekstra, J.S.C.M. (author), Gentili, M. (author)
This document aims to outline the process of co-creation of housing policy with young people in the city of Amsterdam. It is directed at researchers and policymakers who wish to gain more knowledge of the objectives, strategies and methods pertaining to the development of a Reflexive Policy Agenda.
report 2023
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Hoekstra, J.S.C.M. (author), Gentili, M. (author)
This Guidebook is the final deliverable of the work package 4 (WP4) of the UPLIFT project. The overall aim of this work package was to explore how young people’s voices can be put at the centre of youth policy. In order to do this, we carried out four parallel policy co-creation processes with young people in four different locations across...
report 2023
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Hoekstra, J.S.C.M. (author), Gentili, M. (author)
In this policy brief, we provide relevant guidelines and recommendations for each of these phases, based on our evaluation of the UPLIFT co-creation process<br/>in the four different cities. These guidelines and recommendations are meant to inspire and provide support to governments and/or service providers<br/>that want to start a similar co...
report 2023
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Badea, C. (author), Morfin Veytia, A. (author), Patrinopoulou, Niki (author), Daramouskas, Ioannis (author), Ellerbroek, Joost (author), Lappas, Vaios (author), Kostopoulos, Vassilios (author), Hoekstra, J.M. (author)
The use of small aircraft for a wide range of missions in urban airspace is expected to increase in the future. In Europe, efforts have been invested into developing a unified system, called U-space, to manage aircraft in dense very-low-level urban airspace. The Metropolis II project aimed to research what degree of centralisation an air traffic...
journal article 2023
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Appel-Meulenbroek, Rianne (author), Voulon, Thijs (author), Bergefurt, Lisanne (author), Arkesteijn, M.H. (author), Hoekstra, B.S. (author), der Schaaf, Pity Jongens Van (author)
BACKGROUND: During the COVID-19 pandemic, office workers were obliged to work from home (WFH). Alongside known positive aspects of home-based telework, it is associated with reduced health and productivity impacts. Its success depends on employee and environmental characteristics. OBJECTIVE: This paper fills the gap in knowledge on the...
journal article 2023
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Morfin Veytia, A. (author), Badea, C. (author), Patrinopoulou, Niki (author), Daramouskas, Ioannis (author), Ellerbroek, Joost (author), Lappas, Vaios (author), Kostopoulos, Vassilios (author), Hoekstra, J.M. (author)
The interest in urban air mobility as a potential solution for urban congestion is steadily growing. Air operations in urban areas can present added complexity as compared with traditional air traffic management. As a result, it is necessary to test and develop novel airspace designs and rules. As airspace in urban areas is a scarce resource,...
journal article 2023
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Zoutendijk, M. (author), Mitici, M.A. (author), Hoekstra, J.M. (author)
Taxiing aircraft using electric towing vehicles (ETVs) is expected to significantly contribute to the objective of climate-neutral aviation by 2050. This study reviews existing work on operational aspects of electric towing of aircraft, and discusses management solutions. We first discuss the varying electric taxi systems currently under...
journal article 2023
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Groot, D.J. (author), Ribeiro, M.J. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)
The number of unmanned aircraft operating in the airspace is expected to grow exponentially during the next decades. This will likely lead to traffic densities that are higher than those currently observed in civil and general aviation, and might require both a different airspace structure compared to conventional aviation, as well as different...
conference paper 2023
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Roosenbrand, E.J. (author), Sun, Junzi (author), Hoekstra, J.M. (author)
Contrails contribute to global warming by trapping outgoing terrestrial radiation, exerting an immediate warming influence on the climate. The climatic impact of contrails is potentially comparable to that of aviation’s carbon emissions. This underlines the importance of minimizing contrail formation to mitigate the climate effects of aviation,...
conference paper 2023
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Stefanie Horian, S.H. (author), Qian, QK (author), Hoekstra, J.S.C.M. (author), Visscher, H.J. (author)
abstract 2023
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Chamari, L. (author), van der Weijden, J.A.M. (author), Boonstra, L. (author), Hoekstra, W.S. (author), Petrova, E. (author), Pauwels, P. (author)
The integration of data from a variety of systems is critical for developing smart building applications. Design, construction, maintenance, energy management, and automation data are among few. For this integration, having a comprehensive metadata schema is crucial. Semantic web technologies and domain ontologies have been proposed as a means...
conference paper 2023
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