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Effect of residual variance heterocedasticity on milk yield and age at first calving genetic parameter estimates
(2010-01-01)
Genetic evaluation programs assumed homocedasticity of residual variance estimates for different milk yield levels. The objective of this study was to estimate genetic parameters for 305-d milk yield (MY305) and age at ...
Heterogeneidade dos componentes de variância na produção de leite e seus efeitos nas estimativas de herdabilidade e repetibilidade
(Universidade Federal de Santa Maria (UFSM), 2011-06-01)
It was evaluated the heterogeneity of components of phenotypic variance and its effects on the heritability and repeatability estimates for milk yield in Holstein cattle. The herds were grouped according to their level of ...
Heterogeneidade dos componentes de variância na produção de leite e seus efeitos nas estimativas de herdabilidade e repetibilidade
(Universidade Federal de Santa Maria (UFSM), 2011-06-01)
It was evaluated the heterogeneity of components of phenotypic variance and its effects on the heritability and repeatability estimates for milk yield in Holstein cattle. The herds were grouped according to their level of ...
Heterogeneidade dos componentes de variância na produção de leite e seus efeitos nas estimativas de herdabilidade e repetibilidade
(Universidade Federal de Santa Maria (UFSM), 2013)
The Conditional Heterocedasticity on the Argentine Inflation: An Analysis for the Period from 1943 to 2013
(David Publishing, 2017-10)
Numerous economic time series do not have a constant mean and in practical situations, we often see that the variance of observational error is subject to a substantial variability over time. This phenomenon is known as ...
Essays on bivariate option pricing via copula and heteroscedasticity models: a classical and bayesian approach
(Universidade Federal de São CarlosUFSCarPrograma Interinstitucional de Pós-Graduação em Estatística - PIPGEsCâmpus São Carlos, 2019-02-15)
This dissertation is composed of two main and independents essays, but complementary. In the first one, we discuss the option price under a bayesian perspective. This essay aims to price and analyze the fair price behavior ...
Heterogeneidade dos componentes de variância na produção de leite e seus efeitos nas estimativas de herdabilidade e repetibilidade
(Universidade Federal de Santa Maria, 2011-06)
It was evaluated the heterogeneity of components of phenotypic variance and its effects on the heritability and repeatability estimates for milk yield in Holstein cattle. The herds were grouped according to their level of ...
Modelagem de crescimento e produção de povoamentos de eucalipto empregando mínimos quadrados generalizadosGrowth and yield modelling of eucalyptus using generalized least squares
(Universidade Federal de ViçosaBRManejo Florestal; Meio Ambiente e Conservação da Natureza; Silvicultura; Tecnologia e Utilização deMestrado em Ciência FlorestalUFV, 2015)
Modelos de avaliação genética para resistência ao carrapato em uma população multirracial angus-nelore
(Universidade Federal de Santa MariaBrasilZootecniaUFSMPrograma de Pós-Graduação em ZootecniaCentro de Ciências Rurais, 2019-02-26)
Tick combat, inadequate sanitary management and high prices for acaricides are one of the
main problems faced in Brazilian cattle system. The low perspective of new products to combat
this ectoparasite, more efficient ...