Results 11 to 20 of about 8,447,173 (379)

Leave‐Out Estimation of Variance Components

open access: yes, 2020
We propose leave-out estimators of quadratic forms designed for the study of linear models with unrestricted heteroscedasticity. Applications include analysis of variance and tests of linear restrictions in models with many regressors.
Patrick M. Kline   +2 more
semanticscholar   +1 more source

A variance-components analysis for the longitude-network adjustment [PDF]

open access: yesSerbian Astronomical Journal, 2001
The problem of weights in the task of longitude-network adjustment has not been solved yet because the structure of the observational variances is unknown.
Perović G., Cvetković Z.
doaj   +1 more source

Modeling Heterogeneous Variance–Covariance Components in Two-Level Models [PDF]

open access: yes, 2014
Applications of multilevel models to continuous outcomes nearly always assume constant residual variance and constant random effects variances and covar-iances.
G. Leckie   +3 more
semanticscholar   +4 more sources

The genetic basis of inheritance of plant height in maize [PDF]

open access: yesJournal of Agricultural Sciences (Belgrade), 2015
The aim of this study, on the grounds of direct and reciprocal diallel crossing of five inbred lines of maize, was to determine: variability, heterosis, combining ability and genetic basis of plant height inheritance. The experiment was based on
Radanović Slavko N.   +5 more
doaj   +1 more source

Genetic Variability of Show Jumping Attributes in Young Horses Commencing Competing [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2015
The aim of the study was to select traits that may constitute a prospective criterion for breeding value prediction of young horses. The results of 1,232 starts of 894 four-, five-, six-, and seven-year-old horses, obtained during jumping championships ...
Tomasz Próchniak   +3 more
doaj   +1 more source

Components of variance [PDF]

open access: yesDiagnostic Histopathology, 2016
Components of variance have a long history and find application in all areas of scientific investigation. This review introduces components of variance and their importance firstly by examples on blood pressure, proteomic data, breath analysers and esophageal pH monitoring devices.
Solomon, P., Stanford, T.
openaire   +3 more sources

Variance components estimation for farrowing traits of three purebred pigs in Korea [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2017
Objective This study was conducted to estimate breed-specific variance components for total number born (TNB), number born alive (NBA) and mortality rate from birth through weaning including stillbirths (MORT) of three main swine breeds in Korea.
Bryan Irvine Lopez   +4 more
doaj   +1 more source

Flexible results for quadratic forms with applications to variance components estimation [PDF]

open access: yes, 2015
We derive convenient uniform concentration bounds and finite sample multivariate normal approximation results for quadratic forms, then describe some applications involving variance components estimation in linear random-effects models.
Lee H. Dicker, Murat A. Erdogdu
semanticscholar   +1 more source

Impact of variance components on reliability of absolute quantification using digital PCR [PDF]

open access: yes, 2014
Background: Digital polymerase chain reaction (dPCR) is an increasingly popular technology for detecting and quantifying target nucleic acids. Its advertised strength is high precision absolute quantification without needing reference curves.
Clement, Lieven   +2 more
core   +2 more sources

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