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Mostrando ítems 11-20 de 1508
A single statistic for monitoring the covariance matrix of bivariate processes
(Taylor & Francis Inc, 2012-01-01)
In this article, we present a new control chart for monitoring the covariance matrix in a bivariate process. In this method, n observations of the two variables were considered as if they came from a single variable (as a ...
Mode I and mode II delamination of carbon/glass/epoxy hybrid composite: A statistics-based analysis
(2021-01-01)
The delamination of a carbon/glass/epoxy hybrid composite was studied experimentally to analyze the effect of reinforcement heterogeneity on data dispersion. A statistical approach was applied to evaluate the effect of the ...
Decision Theory for the Variance Ratio in One-Way ANOVA with Random Effects
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Estadística, 2015-01-01)
Estimating a variance component in the model of analysis of variance with random effects and testing the hypothesis that the variance vanishes are important issues in many applications. Such inferences are beyond the confines ...
Hypotheses tests on the skewness parameter in a multivariate generalized hyperbolic distribution
(BRAZILIAN STATISTICAL ASSOCIATION, 2021)
The class of generalized hyperbolic (GH) distributions is generated by a mean-variance mixture of a multivariate Gaussian with a generalized inverse Gaussian (GIG) distribution. This rich family of GH distributions includes ...
¿Existe reversión a la medida en el Puerto Rico Stock Index?: Un enfoque Bayesiano.
(Centro de Investigaciones Comerciales e Iniciativas Académicas de la Facultad de Administración de Empresas. Forum Empresarial. Vol.11 Num.2, 2010)
Returns Predictability and Stock Market Efficiency in BrazilPrevisibilidade de Retornos e Eficiência no Mercado Acionário Brasileiro
(Lociedade Brasileira de Finanças, 2011)
Digit ratio (2D:4D) is associated with gastric cancer
(2013-05-01)
Background: Sex steroid exposure during early human development may influence disease susceptibility. Digit ratio (2D:4D) is a putative marker for prenatal hormone exposure and sensitivity, as well as the action of genes ...
Digit ratio (2D:4D) is associated with gastric cancer
(2013-05-01)
Background: Sex steroid exposure during early human development may influence disease susceptibility. Digit ratio (2D:4D) is a putative marker for prenatal hormone exposure and sensitivity, as well as the action of genes ...
Heterogeneidade entre estruturas de matrizes de (co) variâncias
(Universidade Estadual de MaringáBrasilPrograma de Pós-Graduação em ZootecniaUEMMaringá, PRCentro de Ciências Agrárias, 2018)
Biomechanical influence of crown-to-implant ratio on stress distribution over internal hexagon short implant: 3-D finite element analysis with statistical test
(Elsevier B.V., 2015-01-02)
The study of short implants is relevant to the biomechanics of dental implants, and research on crown increase has implications for the daily clinic. The aim of this study was to analyze the biomechanical interactions of ...