Searched for: subject%3A%22Statistics%22
(1 - 20 of 511)

Pages

document
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
document
Eekhout, I. (author), van Buuren, S. (author), Visser, B. (author), Bink, M.C.A.M. (author), Huisman, A. (author)
Intensive longitudinal data can be used to explore important associations and patterns between various types of inputs and outcomes. Nonlinear relations and irregular measurement occasions can pose problems to develop an accurate model for these kinds of data. This paper focuses on the development, fitting and evaluation of a prediction model...
article 2023
document
Delahaye, R. (author), Tunn, V.S.C. (author), Tukker, A. (author)
Effective monitoring of national circular economy policies requires consistent, national databases of material flows and environmental impacts. Yet, databases and indicators developed so far are scattered and inconsistent. To tackle this problem, Statistics Netherlands (CBS) developed a material flow monitor (MFM) that integrates existing...
article 2023
document
Jiang, Q. (author), Bertolo, V.M. (author), Pallaspuro, S. (author), Popovich, V. (author), Sietsma, J. (author), Walters, C.L. (author)
Multi-barrier cleavage models consider cleavage fracture which is characterized by a series of microscale events. One of the challenges for multi-barrier cleavage models is the strong variations of cleavage parameters across different types of steels. The source and magnitude of the variations have not been studied systematically. In the current...
article 2023
document
Chai, X. (author), Rozsas, A. (author), Slobbe, A. (author), Teixeira, A. (author)
This paper investigates the impact of structural health monitoring (SHM) on the failure probability of a simulated sheet pile wall system. We use Bayesian statistics to estimate non-directly observable soil parameters from measured structural responses. These estimates are used to calculate the failure probability of the structure against...
article 2022
document
Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V.A. (author), Sietsma, J. (author), Walters, C.L. (author)
Thick section S690 QT steel is modelled with a modified multibarrier model that is based on the weakest-link mechanism. Segregation bands are modelled as discrete layers which have different grain size, yield properties, and local fracture parameters from outside of the bands. The results show that embrittlement from segregation bands can only...
article 2022
document
Booij, T.M. (author), Chiscop, I. (author), Meeuwissen, E. (author), Moustafa, N. (author), Hartog, F.T.H.D. (author)
article 2022
document
von Benda-Beckmann, A.M. (author), Ketten, D.R. (author), Lam, F.P.A. (author), de Jong, C.A.F. (author), Muller, R.A.J. (author), Kastelein, R.A. (author)
Application of a kurtosis correction to frequency-weighted sound exposure level (SEL) improved predictions of risk of hearing damage in humans and terrestrial mammals for sound exposures with different degrees of impulsiveness. To assess whether kurtosis corrections may lead to improved predictions for marine mammals, corrections were applied to...
article 2022
document
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
document
Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V. (author), Sietsma, J. (author), Walters, C.L. (author)
One of the challenges in cleavage modelling is the strong sensitivity to material characteristics at the micro level. In this research, a microstructure-based method that is coupled with Finite Element Analysis is used to model the cleavage behavior of a S690 QT steel at -130°C. The method is a multi-barrier model which accounts for microcrack...
conference paper 2022
document
Snijder, H.H. (author), Ploegmakers, D. (author), Dekker, R. (author), Maljaars, J. (author)
article 2021
document
Gómez, J.F. (author), Shoeibi Omrani, P.S. (author), Belfroid, S.P.C. (author)
In gas wells, decreased/unstable production can occur due to difficult-to-predict dynamic effects resulted from late-life phenomena, such as liquid loading and flooding. To minimize the negative impact of these effects, maximize production and extend the wells’ lifetime, wells are often operated in an intermittent production regime. The goal of...
conference paper 2021
document
Butler, F. (author), Lucas Luijckx, N.B. (author), Marvin, H.J.P. (author), Bouzembrak, Y. (author), Mojtahed, V. (author)
Food fraud is of high concern to the food industry. A multitude of analytical technologies exist to detect fraud. However, this testing is often expensive. Available databases detailing fraud occurrences were systematically examined to determine how frequently analytical testing triggered fraud detection. A conceptual framework was developed for...
article 2021
document
Younis, A. (author), Trujillo, Y. (author), Benders, R. (author), Faaij, A. (author)
The Colombian agricultural sector has the capacity and ambition to reduce its land use and GHG emissions through sustainable intensification of livestock production. However, the impact of such pathway on the availability of land for bioenergy crops production has not been thoroughly investigated. Moreover, previous assessments of the role...
article 2021
document
Gozzini, S.R. (author)
An anomalous flux of neutrinos produced in hypothetical annihilations or decays of dark matter inside a source would produce a signal observable with neutrino telescopes. As suggested by observations, a conspicuous amount of dark matter is believed to accumulate in the centre of our Galaxy, which is in neat visibility for the Mediterranean...
conference paper 2021
document
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
document
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
document
Caiffi, B. (author), Garcia Soto, A. (author), Heijboer, A. (author), Kulikovskiy, V. (author), Muller, R.S. (author), Sanguineti, M. (author), on behalf of the KM3Net Collaboration, (author)
The identification of cosmic objects emitting high energy neutrinos could provide new insights about the Universe and its active sources. The existence of these cosmic neutrinos has been proven by the IceCube collaboration, but the big question of which sources these neutrinos originate from, remains unanswered. The KM3NeT detector for...
conference paper 2021
document
Willems, R. (author), Willems, F. (author), Simpson, T. (author), Albrecht, B. (author), Deen, N. (author), Somers, B. (author)
CO2 regulations on heavy-duty transport are introduced in essentially all markets within the next decade, in most cases in several phases of increasing stringency. To cope with these mandates, developers of engines and related equipment are aiming to break new ground in the fields of combustion, fuel and hardware technologies. In this work, a...
conference paper 2020
document
Franken, R. (author), Heringa, M.B. (author), Oosterwijk, T. (author), dal Maso, M. (author), Fransman, W. (author), Kanerva, T. (author), Liguori, B. (author), Poikkimäki, M. (author), Rodriguez-Llopis, I. (author), Säämänen, A. (author), Stockmann-Juvala, H. (author), Suarez-Merino, B. (author), alstrup Jensen, K. (author), Stierum, R. (author)
The current work describes the interaction with various stakeholder groups to establish consensus on stage-gate specific criteria that human risk assessment (HRA) models for manufactured nanomaterials (MN) need to comply with. During the decisive steps in the innovation process, which can be described in a simplified way as stage-gates, it is...
article 2020
Searched for: subject%3A%22Statistics%22
(1 - 20 of 511)

Pages