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Keeping your best options open with AI-based treatment planning in prostate and cervix brachytherapyDickhoff, Leah R.M. (author), Scholman, R.J. (author), Barten, Danique L.J. (author), Kerkhof, Ellen M. (author), Roorda, Jelmen J. (author), Velema, Laura A. (author), Stalpers, Lukas J.A. (author), Pieters, Bradley R. (author), Bosman, P.A.N. (author), Alderliesten, T. (author)PURPOSE: Without a clear definition of an optimal treatment plan, no optimization model can be perfect. Therefore, instead of automatically finding a single “optimal” plan, finding multiple, yet different near-optimal plans, can be an insightful approach to support radiation oncologists in finding the plan they are looking for. METHODS AND...review 2024
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de Wit, J.J. (author), Pieters, Wolter (author), van Gelder, P.H.A.J.M. (author)Professionals working in both the physical and cybersecurity domain need to assess and evaluate security risks. As information on risks in general and security risks in particular is often imperfect and intractable, these professionals are facing a challenge in judging both likelihood and consequences, but how much do their existing...journal article 2023
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van der Maas, E.L. (author), Famprikis, Theodosios (author), Pieters, S. (author), Dijkstra, Jonas P. (author), Li, Z. (author), Parnell, S.R. (author), Smith, Ronald I. (author), van Eck, Ernst R.H. (author), Ganapathy, S. (author), Wagemaker, M. (author)Chloride-based solid electrolytes are considered interesting candidates for catholytes in all-solid-state batteries due to their high electrochemical stability, which allows the use of high-voltage cathodes without protective coatings. Aliovalent Zr(iv) substitution is a widely applicable strategy to increase the ionic conductivity of Li<sub...journal article 2023
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Chockalingam, S. (author), Pieters, W. (author), Teixeira, André M.H. (author), van Gelder, P.H.A.J.M. (author)Both intentional attacks and accidental technical failures can lead to abnormal behaviour in components of industrial control systems. In our previous work, we developed a framework for constructing Bayesian Network (BN) models to enable operators to distinguish between those two classes, including knowledge elicitation to construct the directed...journal article 2023
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Binkhorst, V.F. (author), Fiebig, T. (author), Krombholz, Katharina (author), Pieters, Wolter (author), Labunets, K. (author)With the worldwide COVID-19 pandemic in 2020 and 2021 necessitating working from home, corporate Virtual Private Networks (VPNs) have become an important item securing the continued operation of companies around the globe. However, due to their different use case, corporate VPNs and how users interact with them differ from public VPNs, which are...conference paper 2022
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Passalis, N. (author), Pedrazzi, S. (author), Babuska, R. (author), Burgard, W. (author), Ferro, F. (author), Gabbouj, M. (author), Kayacan, E. (author), Kober, J. (author), Pieters, RRGM (author), Valada, A. (author)Existing Deep Learning (DL) frameworks typically do not provide ready-to-use solutions for robotics, where very specific learning, reasoning, and embodiment problems exist. Their relatively steep learning curve and the different methodologies employed by DL compared to traditional approaches, along with the high complexity of DL models, which...conference paper 2022
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Pieters, Liam (author), Noomen, R. (author)This research investigates the performance of a space-based laser system to remove debris objects with size smaller than 10 cm. The laser system is placed in a 800 km Sun Synchronous Orbit and consists of a 20 kW laser that shoots 300 J energy pulses with a repetition frequency of 66.66 Hz. The system is able to detect and track debris...journal article 2022
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Pieters, Cedric (author), Westerveld, W.J. (author), Mahmud-Ul-Hasan, Hasan (author), Severi, Simone (author), Kjellman, Jon (author), Jansen, Roelof (author), Rochus, Veronique (author), Rottenberg, Xavier (author)Photoacoustic tomography defines new challenges for ultrasound detection compared to ultrasonography. To address these challenges, a sensitive, small, scalable, and broadband optomechanical ultrasound sensor (OMUS) has been developed. The OMUS is an on-chip optical ultrasound sensor, using optical interferometric ultrasound detection. It...conference paper 2022
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Zinßer, Mario (author), Braun, Benedikt (author), Helder, Tim (author), Magorian Friedlmeier, Theresa (author), Pieters, Bart (author), Heinlein, A. (author), Denk, Martin (author), Göddeke, Dominik (author), Powalla, Michael (author)Abstract: We show that the concept of topology optimization for metallization grid patterns of thin-film solar devices can be applied to monolithically integrated solar cells. Different irradiation intensities favor different topological grid designs as well as a different thickness of the transparent conductive oxide (TCO) layer. For...journal article 2022
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de Wit, J.J. (author), Pieters, Wolter (author), Jansen, S.J.T. (author), van Gelder, P.H.A.J.M. (author)Security professionals play a decisive role in security risk decision making, with important implications for security in organisations and society. Because of this subjective input in security understanding possible biases in this process is paramount. In this paper, well known biases as observed and described in prospect theory are studied in...journal article 2021
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Pool, D.M. (author), Zaal, P.M.T. (author), Pieters, M.A. (author), Stroosma, O. (author), Mulder, Max (author)This paper investigates the interaction effects of motion filter order and break frequency on pilots’ manual control behavior and control performance using two simulators. Eighteen pilots performed the experiment in the Vertical Motion Simulator (VMS) at NASA Ames Research Center and 20 pilots in the SIMONA Research Simulator at Delft University...journal article 2021
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Chockalingam, S. (author), Pieters, W. (author), Teixeira, André (author), van Gelder, P.H.A.J.M. (author)Water management infrastructures such as floodgates are critical and increasingly operated by Industrial Control Systems (ICS). These systems are becoming more connected to the internet, either directly or through the corporate networks. This makes them vulnerable to cyber-attacks. Abnormal behaviour in floodgates operated by ICS could be caused...journal article 2021
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Ho-Sam-Sooi, Nick (author), Pieters, W. (author), Kroesen, M. (author)Given the significant privacy and security risks of Internet-of-Things (IoT) devices, it seems desirable to nudge consumers towards buying more secure devices and taking privacy into account in the purchase decision. In order to support this goal, this study examines the effect of security and privacy on IoT device purchase behaviour and...journal article 2021
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Goyal, P. (author), Cribellier, Antoine (author), de Croon, G.C.H.E. (author), Lankheet, Martin J. (author), van Leeuwen, Johan L. (author), Pieters, Remco P.M. (author), Muijres, Florian T. (author)When approaching a landing surface, many flying animals use visual feedback to control their landing. Here, we studied how foraging bumblebees (Bombus terrestris) use radial optic expansion cues to control in-flight decelerations during landing. By analyzing the flight dynamics of 4,672 landing maneuvers, we showed that landing bumblebees...journal article 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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de Wit, J.J. (author), Pieters, W. (author), van Gelder, P.H.A.J.M. (author)Risk assessments in the (cyber) security domain are often, if not always, based on subjective expert judgement. For the first time, to the best of our knowledge, the individual preferences of professionals from the security domain are studied. In on online survey they are asked to mention, rate and rank their preferences when assessing a...conference paper 2021
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Spruit, S. (author), de Bruijne, M.L.C. (author), Pieters, W. (author)Individuals are regularly made responsible for risks they wish to take: one can consent to processing of personal data, and decide what to buy based on risk information on product labels. However, both large-scale processing of personal data and aggregated product choices may carry collective risks for society. In such situations, governance...journal article 2020
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Maathuis, E.C. (author), Pieters, W. (author), van den Berg, Jan (author)Cyber operations are relatively a new phenomenon of the last two decades. During that period, they have increased in number, complexity, and agility, while their design and development have been processes well kept under secrecy. As a consequence, limited data(sets) regarding these incidents are available. Although various academic and...journal article 2020
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Cayford, M.R. (author), Pieters, W. (author)The evaluation of the effectiveness of surveillance technology in intelligence agencies and oversight bodies is notably lacking. Assessments of surveillance technology concerning legal compliance, cost, and matters of privacy occupy a solid place, but effectiveness is rarely considered. Bureaucracy may explain this absence. Applying James Q....journal article 2020
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Tervoort, Tom (author), Tuler de Oliveira, M. (author), Pieters, W. (author), van Gelder, P.H.A.J.M. (author), Olabarriaga, Silvia Delgado (author), Marquering, Henk (author)Cyberattacks against healthcare institutions threaten patient care. The risk of being targeted by a damaging attack is increased when medical devices are used which rely on unmaintained legacy software that cannot be replaced and may have publicly known vulnerabilities. This review aims to provide insight into solutions presented in the...journal article 2020