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Paulus, D. (author), Meesters, Kenny (author), de Vries, G. (author), van de Walle, B.A. (author)Humanitarian organizations are increasingly challenged by the amount of data available to drive their decisions. Useful data can come from many sources, exists in different formats, and merging it into a basis for analysis and planning often exceeds organizations’ capacities and resources. At the same time, affected communities’ participation in...conference paper 2019
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Paulus, D. (author), de Vries, G. (author), van de Walle, B.A. (author)The effectiveness of machine learning algorithms depends on the quality and amount of data and the operationalization and interpretation by the human analyst. In humanitarian response, data is often lacking or overburdening, thus ambiguous, and the time-scarce, volatile, insecure environments of humanitarian activities are likely to inflict...conference paper 2019
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van Oosterom, P.J.M. (author), de Vries, M.E. (author), Cemellini, Barbara (author), Thompson, R.J. (author)The visualization of cadastral parcels in 3D is a challenge, since legal boundaries are, in many cases, invisible in the real world; so how can we properly represent something that is not visible to our eyes? This paper uses the results from research looking into problems of occlusion and ambiguous perception (in terms of position, size and...conference paper 2019
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van Westen, B. (author), de Vries, S. (author), Reniers, A.J.H.M. (author), den Bieman, Joost P. (author), Hoonhout, B.M. (author), Rauwoens, P. (author), van Puijenbroek, M.E.B. (author)In order to improve the current aeolian modeling, a process-based model is developed by implementing biological and physical processes adapted from different existing models. The current version of the model is capable of simulating barchan and parabolic dunes and the initial stage of coastal dune formation: Embryo dunes. Potentially the model...conference paper 2019
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Hoogreef, M.F.M. (author), Vos, Roelof (author), de Vries, R. (author), Veldhuis, L.L.M. (author)This paper presents the results of a study into the effect of distributed hybrid-electric propulsion on aircraft performance and characteristics. To size these aircraft, a new preliminary sizing method for hybrid-electric aircraft with distributed propulsion, including aero-propulsive interaction, is combined with a modified Class-II weight...conference paper 2019
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de Vries, Pieter Simke (author), van Kampen, E. (author)Established Control Allocation (CA) methods rely on knowledge of the control effectiveness for distributing control effector utilization for control of (overactuated) systems. The Innovative Control Effectors (ICE) aircraft model is highly overactuated with its 13 control effectors, CA is a preferred method to distribute control effector...conference paper 2019
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de Vries, R. (author), van Arnhem, N. (author), Avallone, F. (author), Ragni, D. (author), Vos, Roelof (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)This experimental study focuses on the aerodynamic interaction effects that occur between an over-the-wing (OTW) propeller and a wing boundary-layer. An OTW propeller is positioned above the hinge-line of a wing featuring a plain flap. The measurements are carried out with and without axial pressure gradients by deflecting the flap and by...conference paper 2019
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van Arnhem, N. (author), de Vries, R. (author), Vos, Roelof (author), Veldhuis, L.L.M. (author)This paper presents an experimental and numerical study of the aerodynamic interaction between horizontal tail-mounted propellers and the airframe. A representative aircraft model was installed in a low-speed wind-tunnel and measurements were taken with an external balance to determine the effect of propeller installation on integral forces...conference paper 2019
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de Vries, R. (author), Hoogreef, M.F.M. (author), Vos, Roelof (author)This study compares a hybrid-electric aircraft featuring a propulsive empennage and over-the- wing, distributed-propulsion to a conventional regional turboprop. The impact of multiple design parameters, mission requirements, and technology assumptions on maximum take-off mass and payload-range energy efficiency is evaluated, in order to...conference paper 2019
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de Vries, P. (author), Moropoulou, Antonia (author)Cultural heritage preservation has developed from an insular vocation into a field of innovative scientific methodologies characterized by a holistic approach combining a range of scientific fields. Unfortunately, preservation education has not been able to keep pace with all these developments. In this paper authentic learning is analyzed as...conference paper 2019
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Roël-Looijenga, A. (author), Klapwijk, R.M. (author), de Vries, M.J. (author)In this paper, pupils’ design behaviour is regarded as an expression of active knowledge acquisition. Four cases of building a task structure, which supports effective discovery learning, were investigated. We focus on simple characteristics in a model to explain the effects of the structure on task execution. It reconciles<br/>the advantages of...conference paper 2018
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Eble, Philipp (author), de Vries, H.J. (author)The paper at hand contemplatesthe effect of a centuries-old national food safety standard on innovation in aglobalizing market. To that end, the case of the German Beer Industry is analysedto explicate the relationship between a longstanding beer purity decree and brewinginnovation. Over 500 years of existence the so-called “Reinheitsgebot”,...conference paper 2018
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Cemellini, Barbara (author), Thompson, R.J. (author), van Oosterom, P.J.M. (author), de Vries, M.E. (author)Many countries are extending their cadastral visualization systems in the third dimension. The reason for this stems from the increasing complexity of contemporary cities, the growing 3D approach in other fields (including 3D spatial data acquisition, spatial data processing and visualization), which made 3D cadastre technologically feasible,...conference paper 2018
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Cemellini, Barbara (author), Thompson, R.J. (author), de Vries, M.E. (author), van Oosterom, P.J.M. (author)More and more countries in the world are developing 3D Cadastre. To make cadastral information available to the potential users, both cadastral sector professionals and normal citizens, the Web can be used as dissemination platform. However, visualization of 3D cadastral information is still a challenge.<br/>Some of the main issues are:...conference paper 2018
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Thompson, R.J. (author), van Oosterom, P.J.M. (author), Cemellini, Barbara (author), de Vries, M.E. (author)This paper describes research into the visualization of mixed 2D and 3D Cadastre. A schema has been developed to accommodate this data, with provision for a time component. This paper describes the schema, the visualization requirements, and the provision of LADMcompatible views of the data for the purpose of developing these tools, and for the...conference paper 2018
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Marcus, E. A.P. (author), de Vries, R. (author), Raju Kulkarni, A. (author), Veldhuis, L.L.M. (author)This paper addresses the aerodynamic performance and numerical modeling of over-the-wing propellers. Installing the propeller above a wing has the potential to increase wing lift-to-drag ratio, high-lift capabilities, and to reduce flyover noise. However, the prediction of its performance is difficult, since research on the aerodynamic...conference paper 2018
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Çağdaş, Volkan (author), Stubkjær, Erik (author), de Vries, Walter Timo (author), Van der Merwe, Cornelius (author), Paasch, Jesper (author), Paulsson, Jenny (author), Schwery, Nadja (author), Ploeger, H.D. (author), Isikdag, Umit (author), Kara, A. (author)Condominium is one of the prevalent forms of three- dimensional (3D) property rights (Paulsson, 2007, p. 32). The condominium concept common to a number of jurisdictions consists of three elements: (a) individual ownership of an apartment, (b) co-ownership (joint ownership) of the land and the common parts of the building, and (c) membership of...conference paper 2018
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Pouliot, Jacynthe (author), Ellul, Claire (author), Hubert, Frederic (author), Wang, Chen (author), Rajabifard, Abbas (author), Kalantari, Mohsen (author), Shojaei, Davood (author), Atazadeh, Behnam (author), van Oosterom, P.J.M. (author), de Vries, M.E. (author), Ying, Shen (author)This paper proposes a discussion on opportunities offered by 3D visualization to improve the understanding and the analysis of cadastre data. It first introduce the rationale of having 3D visualization functionalities in the context of cadastre applications. Second the publication outline some basic concepts in 3D visualization. This section...conference paper 2018
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de Vries, R. (author), Brown, M.T.H. (author), Vos, Roelof (author)The potential benefits of hybrid-electric propulsion (HEP) have led to an increased interest in this topic over the past decade. One promising advantage of HEP is the distribution of power along the airframe, which enables synergistic configurations with improved aerodynamic and propulsive efficiency. The purpose of this paper is to present a...conference paper 2018
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Mast, Danića (author), Schipper, Sylvia (author), van Doorn, F.A.P. (author), Schut, A. (author), Gielen, M.A. (author), de Vries, Sanne (author)This study is carried out within the context of a research and innovation<br/>project Co-design with Kids that aims to support teaching of broad so-called ‘21st<br/>century’ skills. In this project, design toolboxes for use within primary education<br/>are developed and studied, with real life clients and assignments. In the case<br/>described...conference paper 2018