Variance-Components
Estimability of variance components when all model matrices commute
... the variance-covariance matrix, combined with different simple methods of assigning treatments to experimental units, can lead to all four types of behaviour: variance components may be all estimable ...
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Comparison of REML and MINQUE for Estimated Variance Components and Predicted Random Effects
... Though LMM approaches are currently widely used, a potential issue associated with LMM is low power in statistical tests for variance components and random effects. With the use of jackknife methods, ...
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VARIANCE COMPONENTS AND SELECTION FOR FEATHER PECKING BEHAVIOR IN LAYING HENS
... In the present study, variance components and breed- ing values were estimated using a Bayesian approach. In the Bayesian analysis, all parameters in the model were estimated simultaneously. Thus the ...
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Estimation of additive and dominance variance for litter size components in rabbits
... dominance effects) the re-ranking among the top ranked rabbits was substantial especially for NBD (Table 5). In connection with breeding value sta- bility, Wolf et al. (2001) noted that the accuracy of the estimated ...
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Analysis of Variance in an Unbalanced Two Way Mixed Effect Interactive Model
... Similarly, [3] developed a method for deriving exact tests for variance components in some unbalanced mixed linear models. The derivation was based on a new kind of preliminary orthogonal transformation and ...
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Variance components for susceptibility to Mycobacterium bovis infection in dairy and beef cattle
... genetic variance of susceptibility to bTB in environ- ments with different bTB prevalence levels has not pre- viously been ...genetic variance pattern observed in the present study was in direct contrast to ...
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Covariance components by a repeatability model in Slovenian dairy sheep using test-day records
... of variance components with flock-test month effect in the fixed part of the ...of variance due to flock-test month effect provides information about the enlargement of phenotypic ...phenotypic ...
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Methods of accounting for maternal effects in the estimation and prediction of genetic parameters : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Massey University
... estimating variance components have desirable ...estimating variance components from unbalanced data is ...of variance components in a maternal effects model are derived for the ...
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Likelihood inference for small variance components
... log-likelihood. There has been some recent work on the problem of testing hy- potheses about the fixed effect parameters α when the variance components have been estimated by REML (cf., e.g., Richardson & ...
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Recollections from a 50 year random walk midst matrices, statistics and computing
... genetic variance to phenotypic variance. This demands estimating variance com- ponents and doing so from data having unequal numbers of observations in their subclasses, now called unbalanced ...of ...
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Random component threshold models for ordered and discrete response data
... approximate variance-covariance ...of variance components and their asymptotic variance-covariance matrices for ANOVA mixed ...for variance components in the sense given by ...
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The Variance Profile
... unconditional variance of the process is a straightforward consequence of the spectral representation of a stationary process and its covariance ...error variance is the remarkable formula due to Szeg¨o ...
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Heterosis and combining ability studies for improvement of seed cotton yield and fibre quality traits in inter and intraspecific hybrids of allotetraploid cottons
... the components of variance and their ratios indicated the preponderance of non additive gene action for days to 50% flowering, number of monopodia per plant, number of nt, boll weight and seed cotton yield ...
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Do entrepreneurship programmes raise entrepreneurial intention of science and engineering students? The effect of learning, inspiration and resources
... Where do our findings lead the planned behaviour, education, emotion and entrepreneurship literatures? By failing to identify a relationship between intention and nascency, our results invite longitudinal testing of the ...
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CRISP: a computational model of fixation durations in scene viewing
... as those produced by human participants. Second, fixation durations in the experiment are not globally increased, but increase only when the scene is removed from view, i.e., in response to the experimental manipulation. ...
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The estimation of genetic parameters for categorical traits : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Animal Science at Massey University
... The average value o f the sub-popu l ation sampl ing var i ances , E [p . ( 1 -p . ) ] , can also be d educed in a s imi l a r way . When the 1 1 popul ation mean is far from the threshold , a l l p . will be 1 c lose to ...
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Firm and industry effects on firm profitability: an empirical analysis of KSE
... McGahan and Porter (2002) reanalyzed their pervious research but this time they apply different model and technique to analyze the data. They have taken the data form compustat database for the year 1981 to 1994, the ...
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Recent trends in groundwater levels in a highly seasonal hydrological system: the Ganges Brahmaputra Meghna Delta
... seasonal components in weekly ground- water levels in the Ganges-Brahmaputra-Meghna (GBM) Delta, we apply a nonparametric seasonal-trend decompo- sition procedure (STL) to observations compiled from 1985– 2005 in ...
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Spatial trends of genetic variation of domestic ruminants in Europe
... The first five sheep sPCs (Figures 2, 3, Figure S5, and Table S8) represent only 33.8% of the total variation. However, sheep shares, with cattle and goat, the southwest to northwest cline represented by sPC1. This is ...
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The development of a methodology for assessing food quality in hospital food service systems
... Studies which used a uni-component definition of food quality, most commonly relied upon sensory, nutritional or microbiological quality as the single criterion of food quality. From a catering manager’s point of view, ...
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