Peer Group Affiliation of Children: The Role of Perceived Popularity,Likeability, and Behavioral Similarity in Bullying

To understand children's peer group affiliation, this study examined to what extent children in naturally occurring groups resemble each other on bullying, likeability, and perceived popularity. Participants were fourth‐ to sixth‐grade pupils (N = 461). Peer groups were identified using the social cognitive map procedure. Resemblance on bullying, likeability, and perceived popularity was evaluated by means of variance components models. Resemblance in peer groups was strongest for perceived popularity, followed by bullying and likeability. Moreover, resemblance on bullying could for a large part be attributed to the high‐perceived popularity of the group, and to a lesser extent, to the low likeability of the group. It is concluded that children showing bullying seem to affiliate with each other most of all to attain or maintain their position in a perceived popular peer group. Results stress the importance of considering the functionality of bullying from a group perspective.     

主族控制下的族群杂居村落:权力的文化网络视角

本文借助“权力的文化网络”视角,深层再现云南省一个少数民族山区--蚌岚河槽（村庄）传统主族控制和毕摩操控的村落政治格局。作者认为,1949年以前槽区的社会政治局面是主族控制和毕摩操控,主族及其首领毕摩依靠乡村文化网络获得权威和认受性,他们在权力的文化网络中发挥着组织领导的作用,凭借对乡村文化网络（族群内部的宗族关系和宗教信仰以及族群关系等）的操控,主族及其首领毕摩有力地控制着乡村社会。     

傈僳族新创文字研究综述

新傈僳文自1957年创制试行,已历经半个世纪。有关傈僳文的研究积累了翔实的调查资料,并在此基础上取得了可观的研究成果,但尚存在一些不足之处:第一,视野狭窄,方法单一。当前的研究应从多学科的角度,运用多种、多重研究方法,力求在研究中有所创新和突破。第二,描述性研究较多,解释性研究较少。今后的新傈僳文研究应多关注傈僳族文化传承与发展、语言文字多样性保护、文化价值及现实意义等问题。第三,回顾性研究多,前瞻性研究少。学界应对新傈僳文的使用现状进行深层次的前瞻性研究,提出适合现代社会发展规律的、具有应用意义和可操作性的应对策略。     

Robustness of Parameter Estimation Procedures in Multilevel Models When Random Effects are MEP Distributed

In this paper we examine maximum likelihood estimation procedures in multilevel models for two level nesting structures. Usually, for fixed effects and variance components estimation, level-one error terms and random effects are assumed to be normally distributed. Nevertheless, in some circumstances this assumption might not be realistic, especially as concerns random effects. Thus we assume for random effects the family of multivariate exponential power distributions (MEP); subsequently, by means of Monte Carlo simulation procedures, we study robustness of maximum likelihood estimators under normal assumption when, actually, random effects are MEP distributed.     

Optimal design of clinical trials comparing several treatments with a control

Clinical trials are often designed to compare several treatments with a common control arm in pairwise fashion. In this paper we study optimal designs for such studies, based on minimizing the total number of patients required to achieve a given level of power. A common approach when designing studies to compare several treatments with a control is to achieve the desired power for each individual pairwise treatment comparison. However, it is often more appropriate to characterize power in terms of the family of null hypotheses being tested, and to control the probability of rejecting all, or alternatively any, of these individual hypotheses. While all approaches lead to unbalanced designs with more patients allocated to the control arm, it is found that the optimal design and required number of patients can vary substantially depending on the chosen characterization of power. The methods make allowance for both continuous and binary outcomes and are illustrated with reference to two clinical trials, one involving multiple doses compared to placebo and the other involving combination therapy compared to mono-therapies. In one example a 55% reduction in sample size is achieved through an optimal design combined with the appropriate characterization of power.     

Multiple-arm superiority and non-inferiority designs with various endpoints

Multiple-arm dose-response superiority trials are widely studied for continuous and binary endpoints, while non-inferiority designs have been studied recently in two-arm trials. In this paper, a unified asymptotic formulation of a sample size calculation for k-arm (k>0) trials with different endpoints (continuous, binary and survival endpoints) is derived for both superiority and non-inferiority designs. The proposed method covers the sample size calculation for single-arm and k-arm (k> or =2) designs with survival endpoints, which has not been covered in the statistic literature. A simple, closed form for power and sample size calculations is derived from a contrast test. Application examples are provided. The effect of the contrasts on the power is discussed, and a SAS program for sample size calculation is provided and ready to use.     

具有GARCH（1，1）-正态误差项的非对称单位根检验研究

摘　　要:理论研究表明许多经济变量呈现出非对称的门限自回归（TAR）或动态门限自回归（M-TAR）数据生成机制,因而非对称单位根检验就成为该领域的主要研究方向之一。本文对非对称单位根检验Enders-Granger方法在GARCH（1,1）-正态误差项下的检验水平与检验势作了系统的仿真研究。研究表明：GARCH（1,1）-正态误差项的TAR或M-TAR模型会对该方法的检验水平和检验势产生重要影响。     

Fearing yellow,imagining white: media analysis of the Chinese Exclusion Act of 1882

The Chinese Exclusion Act of 1882 was a watershed event in the context of race, nation, and the law because it denied Chinese immigration into the USA for over 80 years. This paper analyses the media coverage of the Chinese in the San Francisco Chronicle during the year of the Act's passage. The theoretical framework of ‘Purity and Danger’ provides a starting point in analyzing how whiteness and nation are constructed as ‘pure’, while Chinese immigration is constructed as a ‘danger’ within a symbolic, racial and political manner. Discourse analysis was applied to the data for an intersectional investigation of race, class, gender, and nation, to determine how the discourse is organized thematically, as well as uncover ideological meanings in relation to how ‘fearing yellow’ also reflected ‘imaging white’ in media discourse.     

The athlete as model minority subject: Jose Bautista and Canadian multiculturalism

The discourse of multiculturalism disguises complicated racial dynamics in nations such as Canada. Although white privilege persists, it tends to be mediated through non-white figures who can engender consent from other minority members. These figures have been called model minorities, a role that is well-tailored to celebrated athletes. Athletes who fill the role of model minority represent the ideal immigrant citizen: English-speaking, middle class/bourgeois, disciplined, and hard-working. As such, they serve a disciplinary function for other immigrants by demonstrating how it is they should act and producing a standard against which they are evaluated. The model minority has become a crucial representational figure for multicultural nations like Canada because the political economy of these states requires cheap labour that can be hyper-exploited through the dehumanization of racialization. Drawing on articles in Toronto's most prominent newspapers, I argue that Toronto Blue Jays baseball star Jose Bautista has recently assumed the status of a model minority. I elaborate the functions of the model minority through a reading of Bautista's representation.     

Rank tests in the two-sample scale problem with unequal and unknown locations

The two-sample scale problem is studied in the case of unequal and unknown location parameters. The method proposed is based on the idea of Moses (1963) and it is distribution-free. The two samples are separated into random subgroups of the same sizek. It is proposed to choosek=4 and to apply the Wilconxon test or the Savage test to the ranges or sample variances of the subgroups. The asymptotic power functions of the tests are compared. For small and moderate sample sizes simulations are carried out. Relations to some other procedures, especially to the method of Compagnone and Denker (1996) are briefly discussed.