Results 11 to 20 of about 2,190,179 (290)

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

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

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

Genetic heterogeneity of residual variance - estimation of variance components using double hierarchical generalized linear models

open access: yesGenetics Selection Evolution, 2010
Background The sensitivity to microenvironmental changes varies among animals and may be under genetic control. It is essential to take this element into account when aiming at breeding robust farm animals.
Fikse Freddy   +4 more
doaj   +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

Partitioning variance in reproductive success, within years and across lifetimes

open access: yesEcology and Evolution, 2023
Variance in reproductive success (sk2, with k = number of offspring) plays a large role in determining the rate of genetic drift and the scope within which selection acts. Various frameworks have been proposed to parse factors that contribute to sk2, but
Robin S. Waples
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  

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

An Asymmetric Area Model-Based Approach for Small Area Estimation Applied to Survey Data

open access: yesRevstat 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

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

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