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Difrancesco, S. (author), van Baardewijk, J.U. (author), Cornelissen, A.S. (author), Varon, C. (author), Hendriks, R.C. (author), Brouwer, A.M. (author)Wearable sensors offer new opportunities for the early detection and identification of toxic chemicals in situations where medical evaluation is not immediately possible. We previously found that continuously recorded physiology in guinea pigs can be used for early detection of exposure to an opioid (fentanyl) or a nerve agent (VX), as well as...article 2023
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Peysakhovich, V. (author), Ledegang, W. (author), Houben, M. (author), Groen, E. (author)Eye movements analysis has great potential for understanding operator behaviour in many safety-critical domains, including aviation. In addition to traditional eye-tracking measures on pilots’ visual behavior, it seems promising to incorporate machine learning approaches to classify pilots’ visual scanning patterns. However, given the multitude...conference paper 2022
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Sastry, S. (author), Garg, P. (author), Silvas, E. (author), Willems, F. (author)Complexity of engine control systems is continuously growing due to an increased number of subsystems and the need for robust performance. For traditional map-based as well as state-of-the-art model-based approaches, this will lead to unacceptable development costs and time for future engines. Parametrization of the embedded models using...conference paper 2022
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Doulgerakis, E. (author), Laarhoven, T. (author), de Weger, B. (author)The main idea behind lattice sieving algorithms is to reduce a sufficiently large number of lattice vectors with each other so that a set of short enough vectors is obtained. It is therefore natural to study vectors which cannot be reduced. In this work we give a concrete definition of an irreducible vector and study the properties of the set of...article 2022
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Burger, F. (author), Neerincx, M.A. (author), Brinkman, W.P. (author)The cognitive approach to psychotherapy aims to change patients' maladaptive schemas, that is, overly negative views on themselves, the world, or the future. To obtain awareness of these views, they record their thought processes in situations that caused pathogenic emotional responses. The schemas underlying such thought records have, thus far,...article 2021
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Pasma, W. (author), Wesselink, E.M. (author), van Buuren, S. (author), de Graaff, J.C. (author), van Klei, W.A. (author)Physiologic data from anesthesia monitors are automatically captured. Yet erroneous data are stored in the process as well. While this is not interfering with clinical care, research can be affected. Researchers should find ways to remove artifacts. The aim of the present study was to compare different artifact annotation strategies, and to...article 2021
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Vo-Thanh, N. (author), Schoen, E.D. (author), Goos, P. (author)Row–column designs involve two crossed blocking factors. We propose three combinatorial criteria and a criterion based on D-efficiency to identify optimal row–column arrangements of fractional factorial two-level designs. We search for such arrangements in complete catalogs of 16-run and 24-run orthogonal arrays of strength 2 with two-level...article 2020
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Schoen, E.D. (author), Vo-Thanh, N. (author), Goos, P. (author)Much research has been done concerning 24-run orthogonal two-level designs involving 3–23 factors and 28-run orthogonal two-level designs involving 3–27 factors. The focus of this research was on completely randomized screening designs and led to lists of recommended designs for each number of factors. When using the recommended designs, there...article 2019
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- Pereira Barata, A. (author), Takes, F.W. (author), van den Herik, H.J. (author), Veenman, C.J. (author) conference paper 2019
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Soer, M.C.M. (author), Klumperink, E.A.M. (author), van den Broek, D.J. (author), Nauta, B. (author), van Vliet, F.E. (author)Spatial interference rejection in analog adaptive beamforming receivers can improve the distortion performance of the circuits following the beamforming network, but is susceptible to the nonlinearity of the beamforming network itself. This paper presents an analysis of intermodulation product cancellation in analog active phased array receivers...article 2017
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Wedley, W.C. (author), Choo, E.U. (author), Wijnmalen, D.J.D. (author)The true pairwise comparison matrix is simulated and used as a benchmark for evaluating different priority vectors derived from a decision maker's pairwise comparison matrix. The accuracy of the decision maker's comparisons are progressively improved until they emulate the true values. Using four different distance measures to evaluate five...article 2016
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Muller, C. (author), Maldonado, A.G. (author), Varnek, A. (author), Creton, B. (author)Each oil reservoir could be characterized by a set of parameters such as temperature, pressure, oil composition, and brine salinity, etc. In the context of the chemical enhanced oil recovery (EOR), the selection of high performance surfactants is a challenging and time-consuming task since this strongly depends on the reservoir's conditions. The...article 2015
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Comaschi, F. (author), Stuijk, S. (author), Basten, A.A. (author), Corporaal, H. (author)Online detection and tracking of a variable number of faces in video is a crucial component in many real-world applications ranging from video-surveillance to online gaming. In this paper we propose FAST-DT, a fully automated system capable of detecting and tracking a variable number of faces online without relying on any scene-specific cues....conference paper 2015
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Soer, M.C.M. (author), Klumperink, E.A.M. (author), Nauta, B. (author), van Vliet, F.E. (author)Beamforming phased-array receivers aim to increase receiver sensitivity and reject interferers in the spatial domain [1,2]. A receiver with programmable phase shift and high linearity is crucial to cope with interference. Switched-capacitor vector modulators can provide adequate phase shift and linearity [3,4], but so far, at the cost of a high...conference paper 2014
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Medeiros, E. (author), Magesacher, T. (author), Ödling, P. (author), Wei, D. (author), Wang, X. (author), Li, Q. (author), Eriksson, P.E. (author), Lu, C. (author), Boschma, J.J. (author), van den Heuvel, B.M. (author)Sudden changes of channel coefficients in a wideband vectored wireline system (such as G.fast) due to changes in the terminating impedance of lines outside the vectored group can seriously degrade stability and throughput. This letter presents a model that predicts the impact of termination mismatch based exclusively on crosstalk data for the...article 2014
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van den Broek, S.P. (author), Bouma, H. (author), den Hollander, R.J.M. (author), Veerman, H.E.T. (author), Benoist, K.W. (author), Schwering, P.B.W. (author)For maritime situational awareness, it is important to identify currently observed ships as earlier encounters. For example, past location and behavior analysis are useful to determine whether a ship is of interest in case of piracy and smuggling. It is beneficial to verify this with cameras at a distance, to avoid the costs of bringing an own...conference paper 2014
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Burghouts, G.J. (author), Schutte, K. (author)We investigate how human action recognition can be improved by considering spatio-temporal layout of actions. From literature, we adopt a pipeline consisting of STIP features, a random forest to quantize the features into histograms, and an SVM classifier. Our goal is to detect 48 human actions, ranging from simple actions such as walk to...article 2013
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Burghouts, G.J. (author)The bag-of-features model is a distinctive and robust approach to detect human actions in videos. The discriminative power of this model relies heavily on the quantization of the video features into visual words. The quantization determines how well the visual words describe the human action. Random forests have proven to efficiently transform...article 2013
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Burghouts, G.J. (author), Schutte, K. (author), Bouma, H. (author), den Hollander, R.J.M. (author)In this paper, a system is presented that can detect 48 human actions in realistic videos, ranging from simple actions such as ‘walk’ to complex actions such as ‘exchange’. We propose a method that gives a major contribution in performance. The reason for this major improvement is related to a different approach on three themes: sample selection...article 2013
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Sijs, J. (author), Lazar, M. (author)To reduce the amount of data transfer in networked systems, measurements are usually taken only when an event occurs rather than at each synchronous sample instant. However, this complicates estimation problems considerably, especially in the situation when no measurement is received anymore. The goal of this paper is therefore to develop a...article 2012