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Carr, Steven (author), Jansen, Nils (author), Bharadwaj, Suda (author), Spaan, M.T.J. (author), Topcu, Ufuk (author)We study planning problems where a controllable agent operates under partial observability and interacts with an uncontrollable opponent, also referred to as the adversary. The agent has two distinct objectives: To maximize an expected<br/>value and to adhere to a safety specification. Multi-objective partially observable stochastic games (POSGs...conference paper 2021
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Castro, Saullo G.P. (author), Jansen, E. L. (author)The multi-modal formulation of Koiter's asymptotic method provides a systematic and efficient procedure to evaluate the initial post-buckling behaviour and to assess the nonlinear behavior of structures. This manuscript presents a displacement-based multi-modal formulation of Koiter's method for cylindrical shells, which are structures known for...conference paper 2022
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Suvarna, Anusha Ravish (author), Koppelaar, Arie (author), Jansen, Feike (author), Wang, J. (author), Yarovoy, Alexander (author)High angular resolution is in high demand in automotive radar. To achieve a high azimuth resolution a large aperture antenna array is required. Although MIMO technique can be used to form larger virtual apertures, a large number of transmitter-receiver channels are needed, which is still technologically challenging and costly. To circumvent this...conference paper 2022
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Jansen, B. (author), Hermans, Felienne (author)The use of spreadsheets in industry is widespread. It is known that spreadsheets have an average life span of five years, and during this life span, they are used on average by thirteen different persons. Consequently, spreadsheets need maintenance, and knowledge about the spreadsheet needs to be transferred from one user to another. To minimize...conference paper 2021
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Arkesteijn, M.H. (author), Jansen, S.J.T. (author), Kieft, B.B.T. (author), Appel-Meulenbroek, Rianne (author), Hoekstra, Bartele (author), Jongens-Vander Schaaf, Pity (author)Due to the COVID-19 crisis, Dutch employees were told to work from home as much as possible. Homeworking can have benefits both for employees and employers, as some experience a productivity increase and a better work-life balance. However, it is also harder for employers to measure and monitor employees’ performance and for the employee it can...conference paper 2021
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Bozali, B. (author), van Dam, J.J.F. (author), Plaude, L. (author), Jansen, K.M.B. (author)Smart textiles have been attracting considerable interest in imparting a wide range of functions to traditional clothing ranging from sensing, actuation, data processing, and energy storage. In the case of textile-based strain sensors, most of the studies proved that they can work in principle, however, producing strain sensors with desirable...conference paper 2021
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de Zeeuw, W. (author), Jesus de Moraes, R. (author), Heemink, A.W. (author), Jansen, J.D. (author)We propose a novel adaptive, adjoint-based, iterative multiscale finite volume (i-MSFV) method. The method aims to reduce the computational cost of the smoothing stage of the original i-MSFV method by selectively choosing fine-scale sub-domains (or sub-set of primary variables) to solve for. The selection of fine-scale primary variables is...conference paper 2019
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Jansen, B. (author), Hermans, F.F.J. (author)Spreadsheets are frequently used in industry to support critical business decisions. Unfortunately, they also suffer from error-proneness, which sometimes results in costly consequences. Experiments in the field of program education have shown that programmers tend to make fewer errors and can better focus on the logic of a program if they use a...conference paper 2019
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Jansen, K.M.B. (author)Smart textiles are textiles with integrated sensors, data processing, communication and power units and can be regarded as a new application field for microelectronic devices. It largely benefits from a series of recent developments: sensors become smaller, more reliable and require less power and, on the other hand, energy harvesting...conference paper 2019
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Overdevest, Jeroen (author), Jansen, Feike (author), Laghezza, Francesco (author), Uysal, Faruk (author), Yarovoy, Alexander (author)An extensive comparison on radar-to-radar interference in frequency-modulated continuous wave (FMCW) and binary phase-modulated continuous wave (PMCW) radars is performed. The noise-plus-interference power for FMCW-to-FMCW and PMCW-to-PMCW interference in a single victim and single interferer environment is compared for generalized waveform...conference paper 2019
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RÖggla, Thomas (author), Li, Jie (author), Fjellsten, Stefan (author), Jansen, Jack (author), Kegel, Ian (author), Pilgrim, Luke (author), Trimby, Martin (author), Williams, Doug (author), Cesar, Pablo (author)While traditional live-broadcasting is typically comprised of a handful of well-defined workflows, these become insufficient when targeting multiple screens and interactive companion devices on the viewer side. In this case study, we describe the development of an end-to-end system enabling immersive and interactive experiences using an...conference paper 2019
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Jansen, K.M.B. (author), Tarren, Bailey (author), Slingerland, M. (author)We developed disposable and stretchable on-skin sensors for simple and unobtrusive monitoring of posture and movements during daily activities. Simple sensor platforms like these are expected to become commonly accepted in the near future, not only for posture monitoring but also for e.g. motion monitoring in sports. The paper describes the...conference paper 2018
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Pieters, Cedric (author), Westerveld, W.J. (author), Mahmud-Ul-Hasan, Md. (author), Severi, Simone (author), Shnaiderman, Rami (author), Ntziachristos, Vasilis (author), Billen, Margo (author), Kjellman, Jon (author), Jansen, Roelof (author), Rochus, Veronique (author), Rottenberg, Xavier (author)We propose a new opto-mechanical ultrasound sensor (OMUS) enabled by an innovative silicon photonics waveguide. We present experimental results up to 30 MHz, a 10-sensor array proof-of-concept and our latest findings.conference paper 2021
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- Jansen, A.J. (author), van Vlaardingen, A. (author), Choppin, S.B. (author), Hart, J (author), Litzenberger, S. (author), Schwanitz, S. (author), de Zee, M. (author), Madeleine, P. (author) conference paper 2022
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Jansen, Jack (author), Subramanyam, Shishir (author), Bouqueau, Romain (author), Cernigliaro, Gianluca (author), Cabré, Marc Martos (author), Pérez, Fernando (author), Cesar, Pablo (author)The advent of affordable 3D capture and display hardware is making volumetric videoconferencing feasible. This technology increases the immersion of the participants, breaking the flat restriction of 2D screens, by allowing them to collaborate and interact in shared virtual reality spaces. In this paper we introduce the design and development...conference paper 2020
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Novikov, A. (author), Voskov, D.V. (author), Hajibeygi, H. (author), Jansen, J.D. (author)An increasing number of geo-energy applications require the quantitative prediction of hydromechanical response in subsurface. Integration of mass, momentum, and energy conservation laws becomes essential for performance and risk analysis of enhanced geothermal systems, stability assessment of CO2 sequestration and hydrogen storage, resolving...conference paper 2022
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Novikov, A. (author), Voskov, D.V. (author), Khait, M. (author), Hajibeygi, H. (author), Jansen, J.D. (author)We develop a collocated Finite Volume Method (FVM) to study induced seismicity as a result of pore pressure fluctuations. A discrete system is obtained based on a fully-implicit coupled description of flow, elastic deformation, and contact mechanics at fault surfaces on a fully unstructured mesh. The cell-centered collocated scheme leads to...conference paper 2021
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Simão, T. D. (author), Jansen, Nils (author), Spaan, M.T.J. (author)Deploying reinforcement learning (RL) involves major concerns around safety. Engineering a reward signal that allows the agent to maximize its performance while remaining safe is not trivial. Safe RL studies how to mitigate such problems. For instance, we can decouple safety from reward using constrained Markov decision processes (CMDPs), where...conference paper 2021
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Buso, A. (author), McQuillan, H.L. (author), Jansen, K.M.B. (author), Karana, E. (author)Designers of textile-based interactive systems tend to treat woven fabrics as static materials and lack deeper understandings of how the textile can be designed for responsive behaviours in artefacts. As a result, in most studies across design and HCI, textiles are employed as substrates for computational, biological, or smart materials. This...conference paper 2022
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Jansen, S.C. (author), Meggers, F. (author)The IEA Annex 64 focusing on low-ex communities aims at the improvement of energy conversion chains on a community scale, using exergy analysis as the primary evaluation mode. Within this Annex the participants discuss important aspects and available methods for energy and exergy assessment as well as the added value of aiming for low exergy ...conference paper 2016