نتایج جستجو برای: β indicates model coefficient and εi
تعداد نتایج: 17220877 فیلتر نتایج به سال:
Joint analyses of correlated phenotypes in genetic epidemiology studies are common. However, these analyses primarily focus on genetic correlation between traits and do not take into account environmental correlation. We describe a method that optimizes the genetic signal by accounting for stochastic environmental noise through joint analysis of a discrete trait and a correlated quantitative ma...
Suppose we observe data of the form Yi = Di(Si + εi) ∈ R or Yi = DiSi + εi ∈ R, i = 1, . . . , n, where Di ∈ Rp×p are known diagonal matrices, εi are noise, and we wish to perform principal component analysis (PCA) on the unobserved signals Si ∈ R. The first model arises in missing data problems, where the Di are binary. The second model captures noisy deconvolution problems, where the Di are t...
the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...
abstract foreign and iranian cultures are far distinct in the constraints imposed on writing and translating for children, since the iranian literary system is mainly concerned with cultural and religious instructions which lead to manipulation of translated texts. this study sought to identify the cultural and social constraints and norms which determined the strategies applied in the transl...
the purpose of this study is identifying effective factors which make customers shop online in iran and investigating the importance of discovered factors in online customers’ decision. in the identifying phase, to discover the factors affecting online shopping behavior of customers in iran, the derived reference model summarizing antecedents of online shopping proposed by change et al. was us...
∞ i=1 aiεn−i, where the εi are i.i.d. with mean 0 and at least finite second moment, and the ai are assumed to satisfy |ai| = O(i) with β > 1/2. When 1/2 < β < 1, Xn is usually called a long-range dependent or long-memory process. For a certain class of Borel functions K(x1, . . . , xd+1), d≥ 0, from R to R, which includes indicator functions and polynomials, the stationary sequence K(Xn,Xn+1, ...
Introduction: Depression is one of the most common mental disorders. Exploring the vulnerabilities of this disorder and how these factors relate to each other remains a major issue in mental health. The aim of this study was to determine the mediating role of cognitive bias in explaining the correlation between behavioral activation system and behavioral inhibition with depression. Methods: ...
whose distribution we may hope to be close to Gaussian. T1 can be bootstrapped (potentially with standard biascorrection and acceleration) to obtain bootstrap CIs, nonparametrically dealing with the unknown variance v1. We ran simulations with n = 800, p = 1500, X having i.i.d. Bernoulli(0.05) entries (the columns of X were then standardized to have mean 0 and variance 1), θ = σ = 10, and εi i....
abstract the present study deals with a comparison between reactive and pre-emptive focus-on-form in terms of application and efficiency. it was conducted in an intermediate english class in shahroud. 15 male learners participated in this research and their age ranged from 18 to 25. a course book, new interchange 3, and a complementary book were used. every session the learners gave lectures o...
the present study reports an analysis of response articles in four different disciplines in the social sciences, i.e., linguistics, english for specific purposes (esp), accounting, and psychology. the study has three phases: micro analysis, macro analysis, and e-mail interview. the results of the micro analysis indicate that a three-level linguistic pattern is used by the writers in order to cr...
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