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Hypothesis test for changes in variance using a statistic based in P-values in a time series of normal independent observations.
Published 2015“…The present work proposes a Hypothesis Test to detect a shift in the variance of a series of independent normal observations using a statistic based on the p-values of the F distribution. Since the probability distribution function of this statistic is intractable, critical values were we estimated numerically through extensive simulation. …”
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Tesis -
806
Efecto de la temperatura de calcinación sobre la reactividad de cementantes hidráulicos a base de yeso de desecho
Published 2016“…El enfoque de esta investigación es la fabricación de un cementante ternario a base principalmente de yeso de desecho, buscando una opción alternativa a la utilización de cemento Portland. …”
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Hypothesis test for changes in variance using a statistic based in P-values in a time series of normal independent observations.
Published 2015“…The present work proposes a Hypothesis Test to detect a shift in the variance of a series of independent normal observations using a statistic based on the p-values of the F distribution. Since the probability distribution function of this statistic is intractable, critical values were we estimated numerically through extensive simulation. …”
Get full text
Tesis -
819
Factores que influyen en la generación de productos obsoletos en los inventarios de las empresas mexicanas (Factors that influence the generation of obsolete products in inventories of Mexican companies)
Published 2009“…The obsolescence of inventories is an actual issue, therefore we propose according to scientific objectives prediction and control (Abramson 1983), an inventory obsolescence construct OI (Chaneski 2000, Aichmayr 2002, Masters 1991) to define the factors that make a product obsolete in the inventories of the companies. …”
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Article -
820
Factores críticos que determinan la intención de compra en línea en el comercio electrónico mexicano (Critical factors which determine purchase online intent in the Mexican electronic commerce)
Published 2009“…Specifically, variables and latent factors of this study derive from the models of Technology Acceptance (Davis, 1989) and Diffusion of Innovations (Rogers, 2003). …”
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