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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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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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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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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
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van Wees, T. (author), Hanselaar, C.A.J. (author), Jansen, E (author), Cervone, A. (author), Zandbergen, B.T.C. (author), van Zeijl, H.W. (author)In the last decade, CubeSat development has shown the potential to allow for low-risk, low-cost space missions. To further improve the capabilities of CubeSats in large scale missions, a novel micro-propulsion system is being developed at Delft University of Technology. The system is based on a Vaporizing Liquid Microthruster (VLM), which is...conference paper 2016
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Insuasty, E (author), van den Hof, P.M.J. (author), Weiland, S (author), Jansen, J.D. (author)In this work, the application of tensor methodologies for computer-assisted history matching of channelized reservoirs is explored. A tensor-based approach is used for the parameterization of petrophysical parameters to reduce the dimensionality of the parameter estimation problem. Building on the work of Afra and Gildin (2013); Afra et.al. ...conference paper 2017
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- Bodde, W.P. (author), McCall, R.T. (author), Jansen, M.H.P. (author), van den Berg, Annemijn (author), Roelvink, D. (author) conference paper 2017
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Jesus de Moraes, R. (author), Fonseca, R.M. (author), Helici, M. (author), Heemink, A.W. (author), Jansen, J.D. (author)In this work, the application of tensor methodologies for computer-assisted history matching of channelized reservoirs is explored. A tensor-based approach is used for the parameterization of petrophysical parameters to reduce the dimensionality of the parameter estimation problem. Building on the work of Afra and Gildin (2013); Afra et.al. ...conference paper 2017
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Goncalves Dias De Barros, E. (author), Leeuwenburgh, O. (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)This paper extends previous work on value of information (VOI) assessment in closed-loop reservoir management (CLRM) to estimate the added value of performing multiple measurements along the producing life of the reservoir. The new procedure is based on the workflow from our previous paper which allows to quantify the VOI of a single observation...conference paper 2015
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Jansen, A.J. (author), Dekker, M.C. (author), van der Steen, Diederik (author)Providing athletes with real-time feedback on their performance is becoming common in many sports, also in speed skating. This research-by-design project aims at finding a tool that allows the speed skater to get real-time feedback on his performance. Speed skaters often mention a so-called “good feeling” when skating behind a better skater. It...conference paper 2018
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Jansen, B. (author), Hermans, F.F.J. (author)The use of spreadsheets in industry is widespread. Companies base decisions on information coming from spreadsheets. Unfortunately, spreadsheets are error-prone and this increases the risk that companies base their decisions on inaccurate information, which can lead to incorrect decisions and loss of money. In general, spreadsheet research is...conference paper 2018
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Ewald, Vincentius (author), Goby, Xavier (author), Jansen, Hidde (author), Groves, R.M. (author), Benedictus, R. (author)The near-term artificial intelligence, commonly referred as ‘weak AI’ in the last couple years was achieved thanks to the advances in machine learning (ML), particularly deep learning, which has currently the best in-class performance outperforming other machine learning algorithms. In the deep learning framework, many natural tasks such as...conference paper 2018
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- Du, T. (author), Turrin, M. (author), Jansen, S.C. (author), van den Dobbelsteen, A.A.J.F. (author), Biloria, N.M. (author) conference paper 2018
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Jansen, S.J.T. (author)In the Netherlands, the extraction of natural gas from the ground has led to soil subsidence and the occurrence of earthquakes. These earthquakes cause physical damage to buildings and also lead to psychological problems and decreased housing satisfaction. Research on the impact of natural hazards has shown that there is a complicated...conference paper 2018
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Jansen, S.C. (author), Bokel, R.M.J. (author), Elswijk, M.J. (author), Mueller, Saskia (author)The traditional way of supplying energy to the built environment is no longer suitable: New buildings with high energy performance and decentralised renewable energy generation, together with the desire to become fossil-free, involve the need for new, more flexible and more integrated energy systems. The district of Buiksloterham was a test case...conference paper 2017