Results 21 to 30 of about 7,497,770 (317)

Genetic analysis of semen from different origins and their impact on production traits: A single and multiple trait approach [PDF]

open access: yesBiotechnology in Animal Husbandry, 2023
This study aims to evaluate the genetics of imported semen and assess the genetic trend of production traits in Holstein cows during their first lactation in Iran.
Jafarzadeh Ghadimi Ramin   +4 more
doaj   +1 more source

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

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

Contrasting genetic architectures of schizophrenia and other complex diseases using fast variance components analysis

open access: yesNature Genetics, 2015
Heritability analyses of genome-wide association study (GWAS) cohorts have yielded important insights into complex disease architecture, and increasing sample sizes hold the promise of further discoveries.
Po-Ru Loh   +13 more
semanticscholar   +1 more source

Variance Components and Generalized Sobol' Indices [PDF]

open access: yesSIAM/ASA J. Uncertain. Quantification, 2012
This paper introduces generalized Sobol' indices, compares strategies for their estimation, and makes a systematic search for efficient estimators. Of particular interest are contrasts, sums of squares and indices of bilinear form which allow a reduced ...
A. Owen
semanticscholar   +1 more source

Kriging with Unknown Variance Components for Regional Ionospheric Reconstruction

open access: yesSensors, 2017
Ionospheric delay effect is a critical issue that limits the accuracy of precise Global Navigation Satellite System (GNSS) positioning and navigation for single-frequency users, especially in mid- and low-latitude regions where variations in the ...
Ling Huang   +5 more
doaj   +1 more source

How reliable are students’ evaluations of teaching quality? A variance components approach

open access: yes, 2017
The inter-rater reliability of university students’ evaluations of teaching quality was examined with cross-classified multilevel models. Students (N = 480) evaluated lectures and seminars over three years with a standardised evaluation questionnaire ...
Daniela Feistauer, Tobias Richter
semanticscholar   +1 more source

Mastering variation: variance components and personalised medicine

open access: yesStatistics in Medicine, 2015
Various sources of variation in observed response in clinical trials and clinical practice are considered, and ways in which the corresponding components of variation might be estimated are discussed.
S. Senn
semanticscholar   +1 more source

Estimating variance components in population scale family trees.

open access: yesPLoS Genetics, 2019
The rapid digitization of genealogical and medical records enables the assembly of extremely large pedigree records spanning millions of individuals and trillions of pairs of relatives.
Tal Shor   +4 more
doaj   +1 more source

The Variance Composition of Firm Growth Rates [PDF]

open access: yesBAR: Brazilian Administration Review, 2009
Firms exhibit a wide variability in growth rates. This can be seen as another manifestation of the fact that firms are different from one another in several respects.
Luiz Artur Ledur Brito   +1 more
doaj  

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