Results 21 to 30 of about 8,447,173 (379)
Genetic analysis of semen from different origins and their impact on production traits: A single and multiple trait approach [PDF]
Biotechnology 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
Nature 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]
SIAM/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
An Asymmetric Area Model-Based Approach for Small Area Estimation Applied to Survey Data
Revstat Statistical Journal, 2021 The Birnbaum–Saunders distribution is asymmetrical and has received considerable attention due to its properties and its relationship with the normal distribution. In this paper, we propose a methodology for estimating the mean of small areas based on a
Marcelo Rodríguez +5 more
doaj +1 more source
How reliable are students’ evaluations of teaching quality? A variance components approach
, 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
Kriging with Unknown Variance Components for Regional Ionospheric Reconstruction
Sensors, 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
Animals, 2023 Selection for zoometrics defines individuals’ productive longevity, endurance, enhanced productive abilities and consequently, their long-term profitability.
Javier Fernández Álvarez +4 more
doaj +1 more source
Mastering variation: variance components and personalised medicine
Statistics 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
The Variance Composition of Firm Growth Rates [PDF]
BAR: 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
Phenotypic Analysis of Fourier-Transform Infrared Milk Spectra in Dairy Goats
Foods, 2023 The infrared spectrum of bovine milk is used to predict many interesting traits, whereas there have been few studies on goat milk in this regard. The objective of this study was to characterize the major sources of variation in the absorbance of the ...
Bartolo de Jesús Villar-Hernández +5 more
doaj +1 more source