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Mostrando ítems 481-490 de 504
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Can the Mode and Time of Commuting to Work Affect Mental Health?
(Elsevier, 2021)
Background: Commuting to work is an important part of many people's daily life, with travel times increasing steadily and becoming a growing problem. Longer commutes, increased costs, and certain forms of transport can ...
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The effect of axial spondyloarthritis on mental health: Results from the Atlas
(The Journal of Rheumatology Publishing Co. Ltd., 2019)
Objective: To assess the risk for mental disorders in patients with axSpA and to examine the associated factors with this. Method: In 2016, a sample of 680 axSpA patients was interviewed as part of the development process ...
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Optimal cluster selection probabilities to estimate the finite population distribution function under PPS cluster sampling
(Springer, 2002-06)
We study the estimation of the finite population distribution function under several sampling strategies based on a PPS cluster sampling, that is to say, with cluster selection probabilities proportional to size. For the ...
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Unitary Owen Points in Cooperative Lot-Sizing Models with Backlogging
(MDPI, 2021-04-15)
This paper analyzes cost sharing in uncapacitated lot-sizing models with backlogging and heterogeneous costs. It is assumed that several firms participate in a consortium aiming at satisfying their demand over the planning ...
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Impact of axial spondyloarthritis on mental health in Europe: results from the EMAS study
(EULAR, 2021)
Objective To determine the presence of mental disorder risk and associated factors in European patients with axial spondyloarthritis (axSpA). Methods Data from 2,166 patients with axSpA in 12 European countries were ...
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Aplicación del muestreo sistemático en el diseño de encuestas
(Universidad de Salamanca, 2001)
La obtención de muestras utilizando el muestreo sistemático es algo que se ha llevado a cabo desde principios del siglo XX, debido a la simplicidad de su manejo. Como inconveniente, los diseños sistemáticos clásicos no son ...
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On optimal regression trees to detect critical intervals for multivariate functional data
(ScienceDirect, 2023-01-13)
In this paper, we tailor optimal randomized regression trees to handle multivariate functional data. A compromise between prediction accuracy and sparsity is sought. Whilst fitting the tree model, the detection of a reduced ...
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Homogeneity of marginal distributions for a large number of populations
(Wiley, 2023-10-03)
Assume that a random vector is observed in populations and independent samples of that random vector are available at each population. Assume that and have the same dimension. Our purpose is to test the equality ...
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Testing for proportions when data are classified into a large number of groups
(Elsevier, 2024-05-11)
When dealing with categorical data, a common concern is to check if the observed relative frequencies agree with a certain fixed vector of ideal proportions. Suppose that the population is divided into subpopulations or ...
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Testing Poissonity of a large number of populations
(Springer, 2023-09-29)
This paper studies the problem of simultaneously testing that each of k samples, coming from k count variables, were all generated by Poisson laws. The means of those populations may differ. The proposed procedure is ...