Results 31 to 40 of about 7,497,770 (317)

Iteratively Reweighted Least Squares Fiducial Interval for Variance in Unbalanced Variance Components Model

open access: yesMathematics
The objective of this work is to propose the iteratively reweighted least squares concept to form a fiducial generalized pivotal quantity of the between-group variance component for the unbalanced variance components model.
Arisa Jiratampradab   +2 more
doaj   +1 more source

Genetic Parameters and Trait Associations in Wheat Under Drought and Low Nitrogen Conditions

open access: yesNitrogen
Drought and low nitrogen stress are the leading cause of low crop production and productivity worldwide. Developing drought-tolerant wheat germplasm resilient to low nitrogen conditions is essential through genetic enhancement and selection for novel ...
Sbongeleni Warren Duma   +3 more
doaj   +1 more source

Maternal effect on sports performance traits in horses

open access: yesCzech Journal of Animal Science, 2019
The aim of the study was to estimate the direct additive genetic effect and the additive maternal effect on the level of traits estimated during the Polish Jumping Championships for Young Horses.
Tomasz Próchniak   +2 more
doaj   +1 more source

Phenotypic Analysis of Fourier-Transform Infrared Milk Spectra in Dairy Goats

open access: yesFoods, 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

Likelihood inference for small variance components

open access: yes, 2000
In this paper, we develop likelihood-based methods for making inferences about the components of variance in a general normal mixed linear model. In particular, we use local asymptotic approximations to construct confidence intervals for the components ...
Stern, S.E., Welsh, A.H.
core   +2 more sources

Variance Components, Correlation and Path Coefficient Analysis of Morpho-Physiological and Yield Related Traits in Spider Plant (Gynandropsis gynandra (L.) Briq.) under Water-Stress Conditions

open access: yesAgronomy, 2023
Drought is the most complex abiotic stress for crop production at the global level. Therefore, developing new African spider plant genotypes tolerant to drought stress is one of the best approaches to achieving and optimizing high yield potential with ...
Tinashe Chatara   +3 more
doaj   +1 more source

Estimation of variance components from the measurement in a geodetic network [PDF]

open access: yesActa Montanistica Slovaca, 2005
The precision of geodetic instruments used for precise measurements in geodetic networks is described by the dispersion σ2 or the standard deviation σ. Some of geodetic instruments, like electro optic range-finder and its accuracy are characteristized by
Bajtala Marek, Sokol Štefan
doaj  

Analysis of the Genetic Parameters for Dairy Linear Appraisal and Zoometric Traits: A Tool to Enhance the Applicability of Murciano-Granadina Goats Major Areas Evaluation System

open access: yesAnimals, 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

An investigation of children's peer trust across culture: is the composition of peer trust universal? [PDF]

open access: yes, 2014
The components of children's trust in same-gender peers (trust beliefs, ascribed trustworthiness, and dyadic reciprocal trust) were examined in samples of 8- to 11-year-olds from the UK, Italy, and Japan.
Bowlby J.   +15 more
core   +1 more source

Genetic parameters and genetic and phenotypic trends of performance traits of equines from the Brazilian Army

open access: yesRevista Brasileira de Zootecnia, 2012
The objective of this research was to compare the magnitude of genetic parameters (coefficients of heritability and genetic correlation) as estimated by the Restricted Maximum Likelihood (REML) method and Bayesian Inference, and to estimate the genetic ...
Mariana de Almeida Dornelles   +7 more
doaj   +1 more source

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