Searched for: subject%3A%22Mathematics%22
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Cai, M. (author), van Buuren, S. (author), Vink, G. (author)
Fully conditional specification (FCS) is a convenient and flexible multiple imputation approach. It specifies a sequence of simple regression models instead of a potential complex joint density for missing variables. However, FCS may not converge to a stationary distribution. Many authors have studied the convergence properties of FCS when...
article 2023
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de Gelder, E. (author), Paardekooper, J.P. (author), Saberi, A.K. (author), Elrofai, H. (author), op den Camp, O.M.G.C. (author), Kraines, S. (author), Ploeg, J. (author), de Schutter, B. (author)
The development of new assessment methods for the performance of automated vehicles is essential to enable the deployment of automated driving technologies, due to the complex operational domain of automated vehicles. One contributing method is scenario-based assessment in which test cases are derived from real-world road traffic scenarios...
conference paper 2022
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Smit, R. (author), van der Ploeg, C. (author), Teerhuis, A. (author), Silvas, E. (author)
The urban environment is amongst the most difficult domains for autonomous vehicles. The vehicle must be able to plan a safe route on challenging road layouts, in the presence of various dynamic traffic participants such as vehicles, cyclists and pedestrians and in various environmental conditions. The challenge remains to have motion planners...
conference paper 2022
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Vijn, A. (author), Peet, B.J. (author), Schaaphok, M. (author), Lepelaars, E. (author), Heemink, A. (author)
This paper presents a hybrid model to estimate the magnetic behaviour of a ferromagnetic structure. The mathematical-physical model has been developed using the Method of Moments combined with a hysteresis model. The mathematical model was derived by a linearisation of the hysteresis curve. The initial magnetic state of a ferromagnetic object is...
article 2022
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Coopmans, T. (author), Knegjens, R. (author), Dahlberg, A. (author), Maier, D. (author), Nijsten, L. (author), de Oliveira Filho, J. (author), Papendrecht, M. (author), Rabbie, J. (author), Rozp?dek, F. (author), Skrzypczyk, M. (author), Wubben, L. (author), de Jong, W. (author), Podareanu, D. (author), Torres-Knoop, A. (author), Elkouss, D. (author), Wehner, S. (author)
article 2021
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Madadi, B. (author), van Nes, R. (author), Snelder, M. (author), van Arem, B. (author)
This study focuses on network configurations to accommodate automated vehicles (AVs) on road networks during the transition period to full automation. The literature suggests that dedicated infrastructure for AVs and enhanced infrastructure for mixed traffic (i.e., AVs on the same lanes with conventional vehicles) are the main alternatives so...
article 2021
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Iniguez, B. (author), Nathan, A. (author), Kloes, A. (author), Bonnassieux, Y. (author), Romanjek, K. (author), Charbonneau, M. (author), van der Steen, J.L. (author), Gelinck, G.H. (author), Gneiting, T. (author), Mohamed, F. (author), Ghibaudo, G. (author), Cerdeira, A. (author)
We review recent compact modeling solutions for Organic and Amorphous Oxide TFTs (OTFTs and AOS TFTs, respectively), which were developed, under the framework of the EU-funded project DOMINO, to address issues specifically connected to the physics of these devices. In particular, using different approaches, analytical equations were formulated...
article 2021
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van Houte, R. (author), Mulderij, J. (author), Attema, T. (author), Chiscop, I. (author), Phillipson, F. (author)
article 2020
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Vesela, S. (author), Kingma, B.R.M. (author), Frijns, A.J.H. (author), van Marken Lichtenbelt, W.D. (author)
The quality of local skin temperature prediction by thermophysiological models depends on the local skin blood flow (SBF) control functions. These equations were derived for low activity levels (0.8-1 met ) and mostly in sitting or supine position. This study validates and discusses the prediction of foot SBF during activities of 1-3 met in male...
article 2019
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Fransman, J. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B.D. (author)
DCOP (Distributed Constraint optimization Problem) is a framework for representing distributed multi- agent problems. However, it only allows discrete values for the decision variables, which limits its application for real-world problems. In this paper, an extension of DCOP is investigated to handle variables with continuous domains....
conference paper 2018
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Stubbé, H. (author), Badri, A. (author), Telford, R. (author), Oosterbeek, S. (author), Hulst A. van der, (author)
Education for children in the developing world is in crisis, and children growing up in war are already at the sharp end of global development challenges: of the 57 million primary-age children who are out of school, almost half live in conflict zones (http://www.unicef.org/media/media_75652.html). This research is grounded in the issues of...
bookPart 2017
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Keyvani Janbahan, A. (author), Alijani, F. (author), Sadeghian Marnani, H. (author), Maturova, K. (author), Goosen, H. (author), van Keulen, F. (author)
This paper investigates the closed-loop dynamics of the Tapping Mode Atomic Force Microscopy using a new mathematical model based on the averaging method in Cartesian coordinates. Experimental and numerical observations show that the emergence of chaos in conventional tapping mode AFM strictly limits the imaging speed. We show that, if the...
article 2017
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Stubbé, H. (author), Badri, A. (author), Telford, R. (author), van der Hulst, A. (author), van Joolingen, W. (author)
E-Learning Sudan (ELS) is a custom-built computer/tablet game that provides alternative learning opportunities to Sudanese children who are excluded from education. Unique in ELS is that children can learn mathematics, in their own remote village, without a teacher. This research study assessed the effectiveness of ELS in two pilots through a...
article 2016
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Wang, X. (author), Trajanovski, S. (author), Kooij, R.E. (author), van Mieghem, P. (author)
Topological characteristics of links of complex networks influence the dynamical processes executed on networks triggered by links, such as cascading failures triggered by links in power grids and epidemic spread due to link infection. The line graph transforms links in the original graph into nodes. In this paper, we investigate how graph...
article 2016
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van den Hout, A. (author), Fox, J.P. (author)
Longitudinal data can be used to estimate the transition intensities between healthy and unhealthy states prior to death. An illness-death model for history of stroke is presented, where time-dependent transition intensities are regressed on a latent variable representing cognitive function. The change of this function over time is described by...
article 2015
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Stubbé, H. (author), Badri, A. (author), Telford, R. (author), van der Hulst, A. (author)
E-Learning Sudan (ELS) is a custom-built computer game that provides alternative learning opportunities to Sudanese children who are excluded from education. Unique in ELS is that children can learn mathematics, in their own remote village, without a teacher. This research study assessed the effectiveness of ELS through a pretest-posttest...
conference paper 2015
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van Turnhout, M. (author), van Grol, P. (author), Bociort, F. (author), Urbach, H.P. (author)
We show that in the lens design landscape saddle points exist that are closely related to local minima of simpler problems. On the basis of this new theoretical insight we develop a systematic and efficient saddlepoint method that uses a-priori knowledge for obtaining new local minima. In contrast with earlier saddle-point methods, the present...
article 2015
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Jolani, S. (author), Debray, T.P.A. (author), Koffijberg, H. (author), van Buuren, S. (author), Moons, K.G.M. (author)
Individual participant data meta-analyses (IPD-MA) are increasingly used for developing and validating multivariable (diagnostic or prognostic) risk prediction models. Unfortunately, some predictors or even outcomes may not have been measured in each study and are thus systematically missing in some individual studies of the IPD-MA. As a...
article 2015
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Kempker, P.L. (author), Ran, A.C.M. (author), van Schuppen, J.H. (author)
Coordinated linear systems are a particular class of hierarchical systems with a top-to-bottom information structure, consisting of a coordinator system and two or more subsystems. This paper deals with the construction and minimality of coordinated linear systems. Construction procedures are given to transform unstructured or interconnected...
article 2014
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Calçada, D. (author), Vianello, D. (author), Giampieri, E. (author), Sala, C. (author), Castellani, G. (author), de Graaf, A.A. (author), Kremer, S.H.A. (author), van Ommen, B. (author), Feskens, E. (author), Santoro, A. (author), Franceschi, C. (author), Bouwman, J. (author)
Aging is a biological process characterized by the progressive functional decline of many interrelated physiological systems. In particular, aging is associated with the development of a systemic state of low-grade chronic inflammation (inflammaging), and with progressive deterioration of metabolic function. Systems biology has helped in...
article 2014
Searched for: subject%3A%22Mathematics%22
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