نتایج جستجو برای: statistical variation

تعداد نتایج: 652626  

Amini, Fatemeh, Masoumi, Peyman, Ramshini, Hossein,

Genetic diversity is the basis of breeding studies in many plant species and is one of the most important indicators for selecting parents. The aim of this experiment was to investigate the genetic diversity of tall fescue (Festuca arundinacea) using agronomic traits such as plant height, spring growth score, days to flowering, days to pollination, flag leaf length and width, panicle length, we...

2005
Fei Hu Vishwani D. Agrawal Darrel Hankerson

Introduction Introduction Background Background – – Dynamic power dissipation Dynamic power dissipation – – Glitch reduction Glitch reduction – – Previous LP model Previous LP model Process Process-variation variation-resistant LP model resistant LP model – – Process variation Process variation – – Delay model Delay model – – LP model based on worst LP model based on worst-case timing case timi...

Journal: :Genetic epidemiology 2011
Lucy Huang Mattias Jakobsson Trevor J Pemberton Muntaser Ibrahim Thomas Nyambo Sabah Omar Jonathan K Pritchard Sarah A Tishkoff Noah A Rosenberg

Sub-Saharan Africa has been identified as the part of the world with the greatest human genetic diversity. This high level of diversity causes difficulties for genome-wide association (GWA) studies in African populations-for example, by reducing the accuracy of genotype imputation in African populations compared to non-African populations. Here, we investigate haplotype variation and imputation...

Journal: :Molecular ecology 2010
Alisa P Ramakrishnan Trieste Musial Mitchell B Cruzan

While it is generally recognized that noncontiguous (long-distance) dispersal of small numbers of individuals is important for range expansion over large geographic areas, it is often assumed that colonization on more local scales proceeds by population expansion and diffusion dispersal (larger numbers of individuals colonizing adjacent sites). There are few empirical studies of dispersal modes...

2009
Niloofar Arshadi Billy Chang Rafal Kustra

In this paper, we apply the gradient-boosting machine predictive model to the rheumatoid arthritis data for predicting the case-control status. QQ-plot suggests severe population stratification. In univariate genome-wide association studies, a correction factor for ethnicity confounding can be derived. Here we propose a novel strategy to deal with population stratification in the context of mul...

Journal: :Twin research and human genetics : the official journal of the International Society for Twin Studies 2005
John B Whitfield Gu Zhu Andrew C Heath Nicholas G Martin

The choice of where to live would appear to be determined by a combination of economic constraints and personal preferences. We have tested how far this choice is affected by the continuing effects of the environment shared within families, and genetic variation between people, using data from twin studies conducted in Australia. The addresses provided by study participants were categorized as ...

Journal: :Proceedings of the Institution of Civil Engineers 1976

Journal: :Psychophysiology 2014
Scott I Vrieze Stephen M Malone Uma Vaidyanathan Alan Kwong Hyun Min Kang Xiaowei Zhan Matthew Flickinger Daniel Irons Goo Jun Adam E Locke Giorgio Pistis Eleonora Porcu Shawn Levy Richard M Myers William Oetting Matt McGue Goncalo Abecasis William G Iacono

Whole genome sequencing was completed on 1,325 individuals from 602 families, identifying 27 million autosomal variants. Genetic association tests were conducted for those individuals who had been assessed for one or more of 17 endophenotypes (N range = 802-1,185). No significant associations were found. These 27 million variants were then imputed into the full sample of individuals with psycho...

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