Variance components

Continued part 1, part 2 of ebook "Practical reliability engineering" provides readers with contents including: reliability of mechanical components and systems; electronic systems reliability; software reliability; design of experiments and analysis of variance; reliability testing; analysing reliability data; reliability demonstration and growth; reliability in manufacture;...

280p hanlinhchi 29-08-2023 3 1   Download

The amount of functional genomic information has been growing rapidly but remains largely unused in genomic selection. Genomic prediction and estimation using haplotypes in genome regions with functional elements such as all genes of the genome can be an approach to integrate functional and structural genomic information for genomic selection.

12p vinarcissa 21-03-2023 5 1   Download

Longitudinal data and repeated measurements in epigenome-wide association studies (EWAS) provide a rich resource for understanding epigenetics. We summarize 7 analytical approaches to the GAW20 data sets that addressed challenges and potential applications of phenotypic and epigenetic data.

10p vihagrid 30-01-2023 7 3   Download

It becomes clear that the increase in the density of marker panels and even the use of sequence data didn’t result in any meaningful increase in the accuracy of genomic selection (GS) using either regression (RM) or variance component (VC) approaches. This is in part due to the limitations of current methods.

10p vihagrid 30-01-2023 8 3   Download

RNA sequencing (RNA-seq) technology has identified multiple differentially expressed (DE) genes associated to complex disease, however, these genes only explain a modest part of variance. Omnigenic model assumes that disease may be driven by genes with indirect relevance to disease and be propagated by functional pathways.

9p vihagrid 30-01-2023 9 3   Download

Associations between haplotypes and quantitative traits provide valuable information about the genetic basis of complex human diseases. Haplotypes also provide an effective way to deal with untyped SNPs. Two major challenges arise in haplotype-based association analysis of family data.

11p vihagrid 30-01-2023 7 3   Download

Multivariate techniques were used to evaluate the relationships among measured parameters. Results showed that the 1st three principal components consisting of soil-types, soil-metal(loids) and soil-pH explained 83% of total variance of both grain-As and Cd accumulation.

11p thebadguys 15-01-2022 14 1   Download

The present investigation was carried out at Genetic Resources Department-Bahtim, to evaluate eight faba bean varieties in diallel crosses set. Twenty-eight crosses were constituted in the 2011/2012 season, whereas parents and crosses were evaluated in 2012/2013, in a randomized complete block design with three replications.

8p schindler 30-12-2021 11 0   Download

Fish communities are important indicators of the health of riverine ecosystems. Fish monitoring for The Living Murray (TLM) initiative, one of Australia’s most ambitious restoration undertakings for the degraded river-floodplain biota of the River Murray system (south-eastern Australia), was carried out annually from 2005 to 2011 across six ‘Icon Sites’, including the habitats and reaches therein. These spatial and temporal components of variation in fish community abundance and composition must be taken explicitly into account for consistent assessment of riverine ecosystem health.

16p dolomite36 30-12-2021 10 0   Download

This paper includes the morphological and anatomical characters of the nutlets of 7 endemic species of the subsection Fragiles of the genus Stachys (Lamiaceae) from Turkey and the systematic significance of these characteristics, using one-way analysis of variance and cluster and principal component analyses. Morphological characters such as the dimensions, shapes, colors, and surfaces of the nutlets were studied using light and scanning electron microscopes.

14p tudichquannguyet 29-11-2021 6 0   Download

Outdoor regional concentrations of airborne fungal spores and fungal fragments were measured using the 7-day Lanzoni sampler. The daily and intradiurnal fluctuations recorded during the monitored period have been studied. The multiple regression analysis was performed in order to determine how much of the total variance in these concentrations could be explained by meteorological parameters. Daytime periodicity (statistically significant) was established only in a few cases. As the relative importance of the weather factors varied, they could not be ranked according to their effect.

9p tudichquannguyet 29-11-2021 7 0   Download

Accordingly, the models proposed in this paper, including the strategy that was adapted, were successful in presenting good results over the full LDA model. Regarding the indicators that were used to extract and to retain the variables in the model, cumulative variance explained (CVE).

23p spiritedaway36 28-11-2021 7 1   Download

In this study we hypothesize that variants in some functional classes, such as splice site regions, coding regions, DNA methylated regions and long noncoding RNA will explain more variance in complex traits than others. Two variance component approaches were used to test this hypothesis – the first determines if variants in a functional class capture a greater proportion of the variance, than expected by chance, the second uses the proportion of variance explained when variants in all annotations are fitted simultaneously.

16p vilarryellison 29-10-2021 11 0   Download

Despite the health concerns and nutritional importance of fatty acids, there is a relative paucity of studies in the literature that report genetic or genomic parameters, especially in the case of sheep populations. To investigate the genetic architecture of fatty acid composition of sheep, we conducted genome-wide association studies (GWAS) and estimated genomic heritabilities for fatty acid profile in Longissimus dorsi muscle of 216 male sheep.

14p vibeauty 23-10-2021 6 0   Download

After the extensive implementation of genomic selection (GS), the choice of the statistical model and data used to estimate variance components (VCs) remains unclear. A primary concern is that VCs estimated from a traditional pedigree-based animal model (P-AM) will be biased due to ignoring the impact of GS.

8p viansan2711 30-07-2021 8 1   Download

The development and application of CRISPR technologies for the modification of the genome are rapidly expanding. Advances in the field describe new CRISPR components that are strategically engineered to improve the precision and reliability of CRISPR editing within the genome sequence.

22p vijeeni2711 30-06-2021 10 1   Download

Genetic connectedness is a critical component of genetic evaluation as it assesses the comparability of predicted genetic values across units. Genetic connectedness also plays an essential role in quantifying the linkage between reference and validation sets in whole-genome prediction.

8p vilichoo2711 23-06-2021 12 1   Download

Several conventional genomic Bayesian (or no Bayesian) prediction methods have been proposed including the standard additive genetic effect model for which the variance components are estimated with mixed model equations.

23p vilichoo2711 25-06-2021 12 1   Download

In the present study, PCA performed for phenological and yield component traits revealed that out of sixteen, only four principal components (PCs) exhibited more than 1.00 eigen value, and showed about 74.79 % total variability among the traits studied under stress condition while under normal condition out of sixteen, only five principal components (PCs) exhibited more than 1.00 eigen value and showed about 77.84% variability among the traits studied.

12p trinhthamhodang11 27-04-2021 14 2   Download

The genetic variance of any morphometric or quantitative trait is indicated additive variance (heritable) and non-additive variance and comprise dominance and epistasis (non-allelic interaction) altered by environmental conditions (Iqbal et al., 2014; Kumar et al., 2017; Spaldon and Kumar, 2017).

15p caygaocaolon11 21-04-2021 10 1   Download