نتایج جستجو برای: environmental conditions covariates

تعداد نتایج: 1173840  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Héctor Corrada Bravo Kristine E Lee Barbara E K Klein Ronald Klein Sudha K Iyengar Grace Wahba

We present a method for examining the relative influence of familial, genetic, and environmental covariate information in flexible nonparametric risk models. Our goal is investigating the relative importance of these three sources of information as they are associated with a particular outcome. To that end, we developed a method for incorporating arbitrary pedigree information in a smoothing sp...

Journal: :Memorias do Instituto Oswaldo Cruz 2013
Shreekant Kesari Gouri Sankar Bhunia Nandini Chatterjee Vijay Kumar Rakesh Mandal Pradeep Das

Visceral leishmaniasis, or kala-azar, is recognised as a serious emerging public health problem in India. In this study, environmental parameters, such as land surface temperature (LST) and renormalised difference vegetation indices (RDVI), were used to delineate the association between environmental variables and Phlebotomus argentipes abundance in a representative endemic region of Bihar, Ind...

Journal: :international journal of civil engineering 0
p. ghoddousi a.m. raiss ghasemi t. parhizkar

plastic shrinkage is one of the most important parameter which must be considered in hot weather concreting. if plastic shrinkage is not prevented, cracking will be significant, especialy if silica fume is used in the mix. in this paper, the effect of silica fume in bleeding and evaporation was investigated in laboratory. the results showed that in restrained shrinkage, beside relative humidity...

2012
WILLIAM T. PETERSON

Climatic effects in the ocean at the community level are poorly described, yet accurate predictions about ecosystem responses to changing environmental conditions rely on understanding biotic responses in a food-web context to support knowledge about direct biotic responses to the physical environment. Here we conduct time-series analyses with multivariate autoregressive (MAR) models of marine ...

1999
Anup Dewanji Suresh H. Moolgavkar

We present a Poisson process formulation for studying the association between environmental covariates and recurrent events. The standard methods, which compare the covariate values (at event times) of the individuals having the event with those of the individuals at risk at that time, cannot accommodate environmental covariates, because they are identical for all individuals at risk. We sugges...

Journal: :پژوهش های علوم دامی ایران 0
حامد سرایی همایون فرهنگ فر حسن نعیمی پور

a total number of 116,984 weight records belonging to 12,397 baluchi lambs reared in abbas abad breeding station during years 1978-2008 were used for phenotypic evaluation of maximum daily growth (mdg) and analysis of environmental factors affecting this trait. the initial data were performed by foxpro program and then gompertz non-linear model was fitted on the weight records of individual lam...

Journal: :Behavior Genetics 2008
M. Gielen P. J. Lindsey C. Derom H. J. M. Smeets N. Y. Souren A. D. C. Paulussen R. Derom J. G. Nijhuis

Heritability estimates of birth weight have been inconsistent. Possible explanations are heritability changes during gestational age or the influence of covariates (e.g. chorionicity). The aim of this study was to model birth weights of twins across gestational age and to quantify the genetic and environmental components. We intended to reduce the common environmental variance to increase herit...

2002
KENNETH H. POLLOCK

I review the use of auxiliary variables in capturerecapture models for estimation of demographic parameters (e.g. capture probability, population size, survival probability, and recruitment, emig ration and immigration numbers). I focus on what has been done in current research and what still needs to be done. Typically in the literature, covariate modelling has made capture and survival probab...

Journal: :Ecology 2016
Farshid S Ahrestani William K Smith Mark Hebblewhite Steven Running Eric Post

Stability in population dynamics is an emergent property of the interaction between direct and delayed density dependence, the strengths of which vary with environmental covariates. Analysis of variation across populations in the strength of direct and delayed density dependence can reveal variation in stability properties of populations at the species level. We examined the stability propertie...

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