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Bouma, H. (author), Villani, M.L. (author), van Rooijen, A.L. (author), Räsänen, P. (author), Peltola, J. (author), Toivonen, S. (author), de Nicola, A. (author), Guarneri, M. (author), Stifini, C. (author), de Dominicis, L. (author)Counter terrorism is a huge challenge for public spaces. Therefore, it is essential to support early detection of threats, such as weapons or explosives. An integrated fusion engine was developed for the management of a plurality of sensors to detect threats without disrupting the flow of commuters. The system improves security of soft targets ...article 2023
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de Koning, M.C. (author), Ma, K. (author), van Grol, M. (author), Iordanov, I. (author), Kruijne, M.J.L. (author), Idrees, K.B. (author), Xie, H. (author), Islamoglu, T. (author), Bross, R.P.T. (author), Farha, O.K. (author)In the case of an incident with nerve agents, the timely and ready detection and identification of such a substance on suspected surfaces is essential. However, the detection of low levels of nerve agents on a surface is a considerable challenge for conventional detection equipment, especially with VX, a highly toxic nerve agent with low...article 2022
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Chiscop, I. (author), Soro, F. (author), Smith, P. (author)Threat hunting and malware prediction are critical activities to ensure network and system security. These tasks are difficult due to increasing numbers of sophisticated malware families. Automatically detecting anomalous Domain Name System (DNS) queries in operational traffic facilitates the detection of new malware infections, significantly...conference paper 2022
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Bronkhorst, A.J. (author), Moretti, D. (author), Geurts, C.P.W. (author)Wind-induced vibrations are an important aspect in high-rise building design. The structural properties that influence vibrations are the mass and stiffness of the building and the foundation. These properties are difficult to predict in the design, resulting in inaccurate predictions of the dynamic response. As a first step towards better...conference paper 2022
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Natali, A. (author), Isufi, E. (author), Coutino Minguez, M.A. (author)This work proposes an algorithmic framework to learn time-varying graphs from online data. The generality offered by the framework renders it model-independent, i.e., it can be theoretically analyzed in its abstract formulation and then instantiated under a variety of model-dependent graph learning problems. This is possible by phrasing (time...article 2022
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van Rooijen, A.L. (author), Bouma, H. (author), Baan, J. (author), van Leeuwen, M.C. (author)Person re-identification (Re-ID) can be used to find the owner of lost luggage, to find suspects after a terrorist attack, or to fuse multiple sensors. Common state-of-the-art deep-learning technology performs well on a large public dataset but it does not generalize well to other environments, which makes it less suitable for practical...conference paper 2022
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van der Burg, E. (author), Hogervorst, M.A. (author), Toet, A. (author)Natural scenes are typically highly heterogeneous, making it difficult to assess camouflage effectiveness for moving objects since their local contrast varies with their momentary position. Camouflage performance is usually assessed through visual search and detection experiments involving human observers. However, such studies are time...conference paper 2022
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Grinberg, M. (author), Stöber, R.M. (author), Edlund, K. (author), Rempel, E. (author), Godoy, P. (author), Reif, R. (author), Widera, A. (author), Madjar, K. (author), Schmidt-Heck, W. (author), Marchan, R. (author), Sachinidis, A. (author), Spitkovsky, D. (author), Hescheler, J. (author), Carmo, H. (author), Arbo, M.D. (author), van de Water, B. (author), Wink, S. (author), Vinken, M. (author), Rogiers, V. (author), Escher, S. (author), Hardy, B. (author), Mitic, D. (author), Myatt, G. (author), Waldmann, T. (author), Mardinoglu, A. (author), Damm, G. (author), Seehofer, D. (author), Nüssler, A. (author), Weiss, T.S. (author), Oberemm, A. (author), Lampen, A. (author), Schaap, M.M. (author), Luijten, M. (author), van Steeg, H. (author), Thasler, W.E. (author), Kleinjans, J.C.S. (author), Stierum, R.H. (author), Leist, M. (author), Rahnenführer, J. (author), Hengstler, J.G. (author)Correction to: Arch Toxicol (2014) 88:2261–2287 https://doi.org/10.1007/s00204-014-1400-x.article 2022
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Rozsas, A. (author), Slobbe, A. (author), Martini, G. (author), Jansen, R. (author)This paper describes a static diagnostic load testing and measurement campaign of a reinforced concrete road bridge in Amsterdam. We consider 29 vertical translation sensors and 37 strain sensors. Multiple Bayesian parameter estima tions are performed to estimate two structural and two load parameters of a three-dimensional finite element (FE)...article 2022
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van der Burg, E. (author), Hogervorst, M.A. (author), Toet, A. (author)Natural scenes are typically highly heterogeneous, making it difficult to assess camouflage effectiveness for moving objects since their local contrast varies with their momentary position. Camouflage performance is usually assessed through visual search and detection experiments involving human observers. However, such studies are time...conference paper 2022
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- de Dominicis, L. (author), Bouma, H. (author), Toivonen, S. (author), Stifini, C. (author), Villani, M.L. (author), de Nicola, A. (author), van Rooijen, A.L. (author), Baan, J. (author), Peltola, J. (author), Lämsä, A. (author), Räsänen, P. (author) conference paper 2021
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MacGillyvray, A. (author), de Jong, C.A.F. (author)Underwater sound mapping is increasingly being used as a tool for monitoring and managing noise pollution from shipping in the marine environment. Sound maps typically rely on tracking data from the Automated Information System (AIS), but information available from AIS is limited and not easily related to vessel noise emissions. Thus, robust...article 2021
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- den Boef, P. (author), Cox, P.B. (author), Tóth, R. (author) conference paper 2021
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- Dijk, J. (author), van den Broek, S.P. (author), den Hollander, R.J.M. (author), Baan, J. (author), ten Hove, J.M. (author), Oorbeek, D. (author) conference paper 2021
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- Gomez-Guillamon Buendia, V. (author), Liberto, S. (author), Goussetis, G. (author), Fonseca, N.J.G. (author) conference paper 2021
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- Kurchaba, S. (author), van Vliet, J. (author), Meulman, J.J. (author), Verbeek, F.J. (author), Veenman, C.J. (author) conference paper 2021
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Natali, A. (author), Isufi, E. (author), Coutino, M. (author), Leus, G. (author)Topology identification is an important problem across many disciplines, since it reveals pairwise interactions among entities and can be used to interpret graph data. In many scenarios, however, this (unknown) topology is time-varying, rendering the problem even harder. In this paper, we focus on a time-varying version of the structural...conference paper 2021
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van Rooijen, A.L. (author), Bouma, H. (author), Pruim, R.H.R. (author), Baan, J. (author), Uijens, W.R. (author), van Mil, J.D. (author)Person re-identification (Re-ID) is a valuable technique because it can assist in finding suspects after a terrorist attack. However, the machine learning algorithms for person Re-ID are usually trained on large datasets with images of many different people in a public space. This could pose privacy concerns for the people involved. One way to...conference paper 2020
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Katsaros, E. (author), Bouma, H. (author), van Rooijen, A.L. (author), van Dusseldorp, E. (author)Vehicle re-identification refers to the task of matching the same query vehicle across non-overlapping cameras and diverse viewpoints. Research interest on the field emerged with intelligent transportation systems and the necessity for public security maintenance. Compared to person, vehicle re-identification is more intricate, facing the...conference paper 2020
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Bezemer, K. (author), McLennan, L. (author), van Duin, L. (author), Kuijpers, C.J. (author), Koeberg, M. (author), van den Elshout, J.J.M.H. (author), van der Heijden, A.E.D.M. (author), Busby, T. (author), Yevdokimov, A. (author), Schoenmakers, P. (author), Smith, J. (author), Oxley, J. (author), van Asten, A. (author)Erythritol tetranitrate (ETN) was prepared independently by two research groups from the USA and the Netherlands. The partially nitrated impurities present in ETN were studied using liquid chromatography-mass spectrometry to address the ultimate challenge in forensic explosives investigations, i.e., providing chemical and tactical information on...article 2020