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Liu, X. (author), Achterberg, M.A. (author), Kooij, R.E. (author)pinion dynamics models study how the interaction among people influences the opinion formation process. In most opinion dynamics models, only one opinion can exist in the steady state, which is different from the real-life opinion formation process. In 2009, Shao et at. introduced a Non-Consensus Opinion (NCO) model, which allows different...conference paper 2022
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Piedvache, A. (author), van Buuren, S. (author), Barros, H. (author), Ribeiro, A.I. (author), Draper, E. (author), Zeitlin, J. (author), EPICE Research group, (author)Background: Loss to follow-up is a major challenge for very preterm (VPT) cohorts; attrition is associated with social disadvantage and parents with impaired children may participate less in research. We investigated the impact of loss to follow-up on the estimated prevalence of neurodevelopmental impairment in a VPT cohort using different...article 2021
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Phillipson, F. (author), Langenkamp, P.N. (author), Wolthuis, R. (author)Bayesian Belief Networks are used in many fields of application. Defining the conditional dependencies via conditional probability tables requires the elicitation of expert belief to fill these tables, which grow very large quickly. In this work, we propose two methods to prepare these tables based on a low number of input parameters using...article 2021
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de Gelder, E. (author), Cator, E. (author), Paardekooper, J.P. (author), op den Camp, O.M.G.C. (author), de Schutter, B. (author)The safety assessment of Automated Vehicles (AVs) is an important aspect of the development cycle of AVs. A scenario-based assessment approach is accepted by many players in the field as part of the complete safety assessment. A scenario is a representation of a situation on the road to which the AV needs to respond appropriately. One way to...conference paper 2021
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Post, R.A.J. (author), Michels, M.A.J. (author), Ampuero, J.P. (author), Candela, T. (author), Fokker, P.A. (author), van Wees, J.D. (author), van der Hofstad, R.W. (author), van den Heuvel, E.R. (author)The initial footprint of an earthquake can be extended considerably by triggering of clustered aftershocks. Such earthquake–earthquake interactions have been studied extensively for data-rich, stationary natural seismicity. Induced seismicity, however, is intrinsically inhomogeneous in time and space and may have a limited catalog of events;...article 2021
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Austin, P.C. (author), White, I.R. (author), Lee, D.S. (author), van Buuren, S. (author)Missing data is a common occurrence in clinical research. Missing data occurs when the value of the variables of interest are not measured or recorded for all subjects in the sample. Common approaches to addressing the presence of missing data include complete-case analyses, in which subjects with missing data are excluded, or mean-value...article 2021
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Steijn, W.M.P. (author), van Kampen, J.N. (author), van der Beek, D. (author), Groeneweg, J. (author), van Gelder, P.H.A.J.M. (author)Quantitative Risk Analysis (QRA) is a standard tool in some high-risk industries (such as the on- and offshore exploration and production and chemical industry). Presently, existing knowledge concerning human error likelihood and human reliability assessment is insufficiently represented in QRAs. In this paper we attempt to implement the...article 2020
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Roubos, A. (author), Allaix, D. (author), Fischer, K. (author), Steenbergen, R. (author), Jonkman, S. (author)General frameworks for reliability differentiation have evolved over time and are mainly developed for buildings. However, recommendations for the safety of existing quay walls are lacking. In this study, target reliability indices for assessing existing quay walls were derived by economic optimisation and by evaluating the requirements...article 2020
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Phillipson, F. (author)In vehicular ad-hoc networks a path has to be found to send a message from one vehicle to another vehicle. This path has to have a connectivity rate that is high enough to obtain a high probability of arrival of the message. In other approaches, this path is based of current, static information of the distribution of cars. In this paper we...conference paper 2019
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Phillipson, F. (author), Fouchal, H. (author), van Gulik, K. (author)In vehicular ad-hoc networks a path has to be found to send a message from one vehicle to another vehicle. This path has to have a connectivity rate that is high enough to obtain a high probability of arrival of the message. In other approaches, the average distance between vehicles on a link of the network is used as metric for connectivity. In...conference paper 2019
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van der Stap, N. (author), van Opbroek, A.G. (author), Huizinga, W. (author), Wilmer, M.M.G. (author), van den Broek, S.P. (author), Pruim, R.H.R. (author), den Hollander, R.J.M. (author), Schutte, K. (author), Dijk, J. (author)Detecting maritime targets with electro-optical sensors is an active area of research. One current trend is to automate target detection through image processing or computer vision. Automation of target detection will decrease the number of people required for lower-level tasks, which frees capacity for higher-level tasks. A second trend is that...conference paper 2018
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Orlic, B. (author), Chitu, A. (author), Brunner, L. (author), Koenen, M. (author), Wollenweber, J. (author), Schreppers, G.J. (author)Loading history during drilling, completion and operations of the well can affect wellbore integrity. Debonding along well cement interfaces leads to the creation of micro-annuli and potential leakage pathways. We investigate the risk of debonding by modeling the integrity of an example well throughout its life-time using a finite element...conference paper 2018
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de Vet, H.C.W. (author), Mullender, M.G. (author), Eekhout, I. (author)Objective: The concept of specific agreement (SA) has been proposed for dichotomous outcomes for two or more raters. We aim to extend this concept for variables with more than two ordinal or nominal categories and more than two raters. Study Design and Setting: We used two data sets: four plastic surgeons classifying photographs after breast...article 2018
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Amoah, B. (author), Giorgi, E. (author), Heyes, D.J. (author), van Buuren, S. (author), Diggle, P.J. (author)Background: Undernutrition among children under 5 years of age continues to be a public health challenge in many low- and middle-income countries and can lead to growth stunting. Infectious diseases may also affect child growth, however their actual impact on the latter can be difficult to quantify. In this paper, we analyse data from 20...article 2018
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Rózsás, Á. (author), Mogyorósi, Z. (author)In structural reliability the dependence structure between random variables is almost exclusively modeled by Gauss (normal or Gaussian) copula; however, this implicit assumption is typically not corroborated. This paper is focusing on time-variant reliability problems with continuous stochastic processes, which are collection of dependent random...article 2017
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Kosgodagan-Dalla Torre, A. (author), Yeung, T.G. (author), Morales-Nápoles, O. (author), Castanier, B. (author), Maljaars, J. (author), Courage, W. (author)Modeling the stochastic evolution of a large-scale fleet or network generally proves to be challenging. This difficulty may be compounded through complex relationships between various assets in the network. Although a great number of probabilistic graph-based models (e.g., Bayesian networks) have been developed recently to describe the behavior...article 2017
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Laan, C.M. (author), Barros, A.I. (author), Boucherie, R.J. (author), Monsuur, H. (author)This paper considers a special case of security games dealing with the protection of a large area divided in multiple cells for a given planning period. An intruder decides on which cell to attack and an agent selects a patrol route visiting multiple cells from a finite set of patrol routes such that some given operational conditions on the...conference paper 2017
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Calvert, S.C. (author), Rypkema, J. (author), Holleman, B. (author), Azulay, D. (author), de Jong, A. (author)This study investigates different methods to visualise uncertainty in static representations of probabilistic traffic models predictions on road-networks. Although various graphical cues may be used to represent uncertainty it is not a priori clear which of them are most suited for this purpose, since their legibility, intelligibility and the...article 2017
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Abspoel, L.M. (author), Courage, W.M.G. (author), van den Broeck, W. (author), Kruse, H. (author)Pipeline networks for gas and water are the lifelines of our society. Their presence and correct functioning translates in benefits and any disruption, malfunctioning or ruptures represent hazards for the community. Most pipelines are buried, which impedes direct monitoring of the structural reliability of the networks. The behavior of the soil...conference paper 2017
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Lourens, A. (author), van Geer, F.C. (author)In many fields of study, and certainly in hydrogeology, uncertainty propagation is a recurring subject. Usually, parametrized probability density functions (PDFs) are used to represent data uncertainty, which limits their use to particular distributions. Often, this problem is solved by Monte Carlo simulation, with the disadvantage that one...article 2016