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van Leeuwen, J.K. (author), Landman, H.M. (author), Groen, Eric L. (author), Mumaw, Randall J. (author), Stroosma, O. (author), van Paassen, M.M. (author), Mulder, Max (author)Previous research indicated a need to improve pilot training with regard to understanding of autopilot logic and behavior, especially in non-routine situations. Therefore, we tested the effect of problem-based exploratory training on pilots’ understanding of autopilot functions. Using a moving-base flight simulator, general aviation pilots (n...journal article 2024
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van Bortel, G.A. (author), Hackauf, U.D. (author), Vermaas, P.E. (author), van Gameren, D.E. (author), Hertogh, M.J.C.M. (author), Van Eekelen, Bregje F. (author), Asselbergs, M.F. (author), Ghorbani, Amineh (author), Groen, E.J. (author), Kloosterziel, A. (author), Spoor, K. (author)“De woningcrisis biedt kansen. De kans om een duurzaam en langdurig gezond woonklimaat te realiseren.”<br/><br/>Woningnood is geen nieuw verschijnsel in ons land. Al in de negentiende eeuw leidde snelle bevolkingsgroei en verstedelijking tot een huisvestingstekort; de woningwet van 1901 moest daar een eind aan maken. In de wederopbouwjaren na de...report 2024
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van Dorst, M.J. (author), Vink, J.A. (author), Groen, E.J. (author), van Delden, J.M. (author), de Haan, A.L. (author), Tijchon, L.A.J. (author), van den Boomen, V.J.M. (author), Zijlstra, R.S. (author)Visie voor de TU Delft Campus, locatie Delft.report 2023
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van Dorst, M.J. (author), Vink, J.A. (author), Groen, E.J. (author), van Delden, J.M. (author), de Haan, A.L. (author), Tijchon, L.A.J. (author), van den Boomen, V.J.M. (author), Zijlstra, R.S. (author)A vision for the TU Delft campus, location Delft, 2040report 2023
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van der Stel, Stefan D. (author), Lai, Marco (author), Groen, Harald C. (author), Witteveen, Mark (author), Kuhlmann, Koert F.D. (author), Grotenhuis, Brechtje A. (author), Kok, Niels F.M. (author), van Gastel, Mark (author), Hendriks, B.H.W. (author), Ruers, Theo J.M. (author)Introduction: Anastomotic leakage after gastrointestinal surgery has a high impact on patient's quality of life and its origin is associated with inadequate perfusion. Imaging photoplethysmography (iPPG) is a noninvasive imaging technique that measures blood-volume changes in the microvascular tissue bed and detects changes in tissue...journal article 2023
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Bouwhuis, Twan (author), Verwijmeren, Joris (author), Pijls, Ruth (author), Groen, Brenda (author)Background and aim - Police interrogations tend to be very stressful. This comes at the expense of the effectiveness of interrogations as stressed suspects and witnesses provide less extensive and accurate statements. A more comfortable environment probably leads to more effective interrogations for all persons involved. The aim of this research...conference paper 2022
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Lai, Marco (author), van der Stel, Stefan D. (author), Groen, Harald C. (author), van Gastel, Mark (author), Kuhlmann, Koert F.D. (author), Ruers, Theo J.M. (author), Hendriks, B.H.W. (author)Surgical excision is the golden standard for treatment of intestinal tumors. In this surgical procedure, inadequate perfusion of the anastomosis can lead to postoperative complications, such as anastomotic leakages. Imaging photoplethysmography (iPPG) can potentially provide objective and real-time feedback of the perfusion status of tissues....journal article 2022
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Landman, H.M. (author), Kalogeras, Dimitrios (author), Houben, Mark (author), Groen, Eric L. (author)Background: Previous research has shown that experiencing motion stimuli negatively impacts cognitive performance. Objective: In the current study, we investigate whether this impact relates to Type-II spatial disorientation (SD), to motion stimulus magnitude, or to an interaction of these factors. Method: Stimuli for participants (n = 23)...journal article 2022
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Wu, J. (author), Sigmund, Ole (author), Groen, Jeroen P. (author)Multi-scale structures, as found in nature (e.g., bone and bamboo), hold the promise of achieving superior performance while being intrinsically lightweight, robust, and multi-functional. Recent years have seen a rapid development in topology optimization approaches for designing multi-scale structures, but the field actually dates back to...review 2021
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Tuluk, A. (author), Mahon, T.R. (author), van der Zwaag, S. (author), Groen, W.A. (author)BiFeO<sub>3</sub> is an interesting multiferroic material with potential use in sensors and transducers. However, the high coercive field and low dielectric strength of this material make the poling process extremely difficult. Poling becomes a lot easier if the ceramic particles are incorporated in a non-conductive polymer with comparable...journal article 2021
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Mahon, T.R. (author), Giannopoulos, D. (author), van der Zwaag, S. (author), Groen, W.A. (author)In this work, we present the impact of using Na<sub>2</sub>CO<sub>3</sub> as a sintering aid and grain growth agent on the crystal structure, microstructure, and piezoelectric properties of (Bi<sub>0.5</sub>Na<sub>0.5</sub>)TiO<sub>3</sub> ceramics. The addition of Na<sub>2</sub>CO<sub>3</sub> leads to a substantial increase in the grain size...journal article 2021
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Giannopoulos, D. (author), Chen, Yu Chen (author), van der Zwaag, S. (author), Groen, W.A. (author)Piezoelectric transducers which rely on oscillating cantilever-type beams to harvest mechanical energy locally available in environments have been of great interest as a substitute for batteries. Most of the research efforts focus mostly on designs which aim at resonance matching to achieve maximum energy output without taking the mechanical...journal article 2021
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Landman, H.M. (author), van den Hoed, Annemarie (author), van Baelen, D. (author), Stroosma, O. (author), van Paassen, M.M. (author), Groen, Eric L. (author), Mulder, Max (author)Ground-based demonstration of spatial disorientation (SD) has been recommended for military as well as commercial pilot training. Although the leans illusion is the most common form of SD, no data exist yet of an effective ground-based leans procedure for a hexapod simulator. In this paper we describe the development of such a procedure and its...conference paper 2021
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Groen, Nathalie (author), Leenders, Floris (author), Mahfouz, A.M.E.T.A. (author), Munoz-Garcia, Amadeo (author), Muraro, Mauro J. (author), de Graaf, Natascha (author), Rabelink, Ton J. (author), Hoeben, Rob (author), Reinders, M.J.T. (author)The maintenance of pancreatic islet architecture is crucial for proper β-cell function. We previously reported that disruption of human islet integrity could result in altered β-cell identity. Here we combine β-cell lineage tracing and single-cell transcriptomics to investigate the mechanisms underlying this process in primary human islet...journal article 2021
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Tselikos, Georgios (author), Rasul, Shahid (author), Groen, W.A. (author), Li, Chunchun (author), Khaliq, Jibran (author)Three-dimensional printing-based additive manufacturing has emerged as a new frontier in materials science, with applications in the production of functionalized polymeric-based hybrid composites for various applications. In this work, a novel conceptual design was conceived in which an AC electric field was integrated into a commercial 3D...journal article 2021
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Lai, Marco (author), Dicorato, Claudio Spiridione (author), de Wild, Marco (author), Verbakel, Frank (author), Shulepov, Sergei (author), Groen, Joanneke (author), Notten, Marc (author), Lucassen, Gerald (author), Van Sambeek, Marc R.H.M. (author), Hendriks, B.H.W. (author), de With, Peter H.N. (author)Peripheral Artery Diseases (PAD) are caused by the occlusions of arteries in the peripheral locations of the circulatory system. The severity of PAD is usually assessed using the Ankle Brachial Index (ABI) and the Ultrasound Doppler. Non-contact Photoplethysmography (PPG) imaging is a recent emerging technology capable of monitoring skin...conference paper 2021
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Groen, D. (author), Arabnejad, H. (author), Jancauskas, V. (author), Edeling, W. N. (author), Jansson, F.R. (author), Richardson, R. A. (author), Lakhlili, J. (author), Veen, L. (author), Bosak, B. (author)We present the VECMA toolkit (VECMAtk), a flexible software environment for single and multiscale simulations that introduces directly applicable and reusable procedures for verification, validation (V&V), sensitivity analysis (SA) and uncertainty quantication (UQ). It enables users to verify key aspects of their applications,...journal article 2021
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Landman, H.M. (author), Groen, Eric L. (author), van Paassen, M.M. (author), Bronkhorst, Adelbert W. (author), Mulder, Max (author)Previous studies show that pilots sometimes make roll reversal errors (RREs) when responding to the aircraft bank angle shown on the attitude indicator (AI). This is suggestive of a perceptual ambiguity in the AI. In the current study, we investigated whether expectation contributes to such misperception. Twenty nonpilots performed tasks in a...journal article 2020
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Leandro Cruz, M. (author), van den Bogaard, M.E.D. (author), Saunders-Smits, Gillian (author), Groen, W.A. (author)Contribution: This study reports on a reliable and valid instrument that measures engineering students' perceptions of their competency levels. A better understanding of students' needs in engineering curricula will support the development of engineering students' transversal competencies. Background: Prior research has investigated how...journal article 2020
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van den Hoed, Annemarie (author), Landman, H.M. (author), van Baelen, D. (author), Stroosma, O. (author), van Paassen, M.M. (author), Groen, Eric L. (author), Mulder, Max (author)Objective: We tested whether a procedure in a hexapod simulator can cause incorrect assumptions of the bank angle (i.e., the “leans”) in airline pilots as well as incorrect interpretations of the attitude indicator (AI). Background: The effect of the leans on interpretation errors has previously been demonstrated in nonpilots. In-flight,...journal article 2020