نتایج جستجو برای: standard sample unit
تعداد نتایج: 1239427 فیلتر نتایج به سال:
Statistical methods are frequently used in toxicology, yet it is not clear whether the methods employed by the studies are used consistently and conducted based on sound statistical grounds. The purpose of this paper is to describe statistical methods used in top toxicology journals. More specifically, we sampled 30 papers published in 2014 from Toxicology and Applied Pharmacology, Archives of ...
the purpose of this study was to investigate the relationship between teachers’ class management practices with students’ self- regulated learning and academic self-efficacy. in this study relating to the management class, three dimensions, (training management, people management and behavior management) and three style (interventionist, interactionist and non-interventionist) was considered. r...
This paper presents the first research results of the Cross-Cultural Cumulative Coding Center (CCCCC), a unit established at the University of Pittsburgh in May, 1968, with support from the National Science Foundation. It offers to scholars a representative sample of the world's known and well described cultures, 186 in number, each "pinpointed" to the smallest identifiable subgroup of the soci...
There are many challenges to be faced when conducting randomized controlled trials (RCTs) in pediatric research. One important challenge is the determination of an appropriate sample size. Recruiting more children than necessary risks unnecessary overexposure of children to an inferior treatment, whereas underestimating the sample required will lead to inconclusive or unreliable results. Both o...
We study two standard multi-unit auction formats for allocating multiple units of a single good to multi-demand bidders. The first one is the Discriminatory Auction, which charges every winner his winning bids. The second is the Uniform Price Auction, which determines a uniform price to be paid per unit. Variants of both formats find applications ranging from the allocation of state bonds to in...
Summary We propose a new unit root test for stationary null hypothesis H0 against alternative H1. Our approach is nonparametric as only assumes that the process concerned I(0) without specifying any parametric forms. The based on fact sample autocovariance function converges to finite population an while it diverges infinity with roots. Therefore rejects large values of function. To address tec...
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