Results 21 to 30 of about 2,190,179 (290)

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

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

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

Generalizibility of instructional and school effectiveness indicators across nations [PDF]

open access: yes, 1989
In a secondary analysis of the data base of the IEA second mathematics study, the association of school and instructional characteristics with mathematics achievement within and across 17 countries at the school and student level was investigated.
Pelgrum, W.J.   +2 more
core   +3 more sources

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

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  

A variance components factor model for genetic association studies: a Bayesian analysis.

open access: yes, 2010
Studies of gene-trait associations for complex diseases often involve multiple traits that may vary by genotype groups or patterns. Such traits are usually manifestations of lower-dimensional latent factors or disease syndromes.
Nonyane, BAS, Whittaker, JC
core   +1 more source

Conductance fluctuations in the presence of spin scattering [PDF]

open access: yes, 2003
Electron transport through disordered systems that include spin scatterers is studied numerically. We consider three kinds of magnetic impurities: the Ising, the XY and the Heisenberg. By extending the transfer matrix method to include the spin degree of
B.I. Halperin   +27 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

Physical appearance perfectionism explains variance in eating disorder symptoms above general perfectionism [PDF]

open access: yes, 2015
Physical appearance perfectionism is a domain-specific form of perfectionism comprising two components: hope for perfection and worry about imperfection (Yang & Stoeber, 2012).
Bardone-Cone   +47 more
core   +1 more source

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