Harm by Her Own Hand

Abstract

Recent research regarding violence among juveniles has left important questions unanswered. One question involves the effect of gender. This paper reports the results of a study examining gender differences in violent behavior. The records of 136 juveniles (m = 71; f = 65) were reviewed to test the hypothesis that sexual abuse, low levels of family support, and low levels of support from friends would predict self-directed violence more effectively among females than among males. Logistic regression models correctly classified 71% of the girls and 76.06% of the boys. The model for girls identified 79.49% (9.59% improvement) of the non-mutilators and 57.69% (16.62% improvement) of the mutilators. The model for boys predicted non-mutilation with 100% accuracy (25% improvement), but did not correctly classify any mutilators (23.61% decrease in predictive capacity). The study supported the hypothesis and has important implications for social work practice.     

Four tests of fit for the beta-binomial distribution

Tests based on the Anderson–Darling statistic, a third moment statistic and the classical Pearson–Fisher X ² statistic, along with its third-order component, are considered. A small critical value and power study are given. Some examples illustrate important applications.     

A longitudinal study of depressiveness in children in public care

Rajhvajn Bulat L. A longitudinal study of depressiveness in children in public care Int J Soc Welfare 2010: 19: 412–423 © 2009 The Author, Journal compilation © 2009 Blackwell Publishing Ltd and the International Journal of Social Welfare. The aim of this article is to analyse the challenges involved when making longitudinal observations of depressiveness in children raised in public care. The first measurement comprised 375 children from children's homes and foster families; however, most of the results are based on an analysis of the 139 children who participated in both parts of the research. We used the Child Depression Inventory and the anxiety/depression subscales of Youth Self Report and Child Behaviour Checklist as measures of depressiveness. The comparison of results from the first and second measurements showed that depressiveness in children in public care decreased over time. Children who grew up in children homes were, in the first measurement, more depressed than those living in foster families, but after five years that difference had disappeared. Furthermore, decrease in depressiveness is predominantly associated with less frequent delinquent, aggressive or hyperactive behaviour, less withdrawal and better control over uncomfortable emotions.     

Diagnostic tools in generalized Weibull linear regression models

We propose some statistical tools for diagnosing the class of generalized Weibull linear regression models [A.A. Prudente and G.M. Cordeiro, Generalized Weibull linear models, Comm. Statist. Theory Methods 39 (2010), pp. 3739–3755]. This class of models is an alternative means of analysing positive, continuous and skewed data and, due to its statistical properties, is very competitive with gamma regression models. First, we show that the Weibull model induces ma-ximum likelihood estimators asymptotically more efficient than the gamma model. Standardized residuals are defined, and their statistical properties are examined empirically. Some measures are derived based on the case-deletion model, including the generalized Cook's distance and measures for identifying influential observations on partial F-tests. The results of a simulation study conducted to assess behaviour of the global influence approach are also presented. Further, we perform a local influence analysis under the case-weights, response and explanatory variables perturbation schemes. The Weibull, gamma and other Weibull-type regression models are fitted into three data sets to illustrate the proposed diagnostic tools. Statistical analyses indicate that the Weibull model fitted into these data yields better fits than other common alternative models.     

古田会议精神对人民军队建设的历史影响

古田会议是中国共产党历史上具有重大意义的一次会议,是马克思主义中国化的重要成果。在新民主主义革命时期,古田会议精神不但帮助中国工农红军克服了各种非无产阶级思想,解决了以农民为主要成份的旧军队转变成为中国共产党领导的无产阶级新型革命军队的这个根本性问题,而且规定了红军的性质、宗旨和任务,确立了党对红军绝对领导的基本原则。在社会主义建设时期,尽管中国人民解放军面临的环境、任务和军队的成分发生了重大变化,但作为中国共产党和人民军队优良传统和革命法宝的古田会议精神,始终成为中国人民解放军建设的指导思想和基本原则,并保证了新形势下人民军队坚定正确的政治方向。     

读朱新天著《印度教万神殿艺术——印度王后井探秘》

朱新天博士的新著《印度教万神殿艺术——印度王后井探秘》,是她近20年来苦心研究印度艺术的结晶。该书已分别以中、英、法三种文字同时出版,在国际印度艺术研究领域产生了重要影响。     

Non-Normal Bivariate Distributions with Normal Marginals

The purpose of this note is to indicate that Fieller's Theorem can be expressed in the matrix formulation of the general linear model. The practical consequence is that one general computer program which can estimate the parameters and test the validity of a pertinent model, can also compute confidence limits for the ratios of any linear combinations of the parameters.     

《唐方镇文职僚佐考》增补

文职僚佐是唐代藩镇的重要组成人员,随着考古资料的增进,有关唐代藩镇文职僚佐的史料不断增加,将这些资料加以整理对研究唐朝历史将提供便利条件。     

朝鲜核战略与东北亚地区的核扩散——兼谈对中国周边安全的影响

朝鲜之所以进行核试验，与先前印度、巴基斯坦等国家的“成功”先例不无关系。朝鲜的核武装可能带来的严重后果，会使原本就蠢蠢欲动的日本、韩国甚至台湾等纷纷步朝鲜后尘，有可能走上核开发之路。届时，东北亚必将引发核“多米诺骨牌效应”，这不仅会导致东北亚局势严重不稳，也会使中国成为唯一一个被核国家包围的国家。