The residual effect of a growth-decay mechanism and the distributions of covariance structures

The product of two independent or dependent scalar normal variables, sums of products, sample covariances, and general bilinear forms are considered. Their distributions are shown to belong to a class called generalized Laplacian. A growth-decay mechanism is also shown to produce such a generalized Laplacian. Sets of necessary and sufficient conditions are derived for bilinear forms to belong to this class. As a generalization, the distributions of rectangular matrices associated with multivariate normal random vectors are also discussed.     

“袖”在中、朝舞蹈作品中运用异同之管见

"袖"舞是东方舞蹈的一大创造."袖"的运用,除延长了人的肢体,大大扩展了身体的表现力外,还通过舞者手臂、手腕、腰腹、身肢等不同力量、不同幅度的运动,使"袖"缭绕空际,变幻着无数的形态,其传情丰富、鲜明,超过了许多表情手段."袖"的徐缓、抑扬、飘忽、回旋所产生的形式美,完全可以把人们引入一个非物质的境界之中,赋予"袖"舞以人文精神内涵和意蕴,展现了"袖"舞的魅力和光环.     

Young helpline callers and difference: exploring gender, ethnicity and sexuality in helpline access and provision

This article, which has its origin in a feasibility study carried out for three youth telephone helplines, focuses on gender, difference and helpline access by young people. During the research process the writers noted that for the three commissioning helplines, as is the case with the majority of other telephone helplines, approximately two‐thirds of callers are female. A helpline for young Muslims where the gender access ratio was 50/50 stood out as being different in this respect. Until recently, literature on gender and help‐seeking has tended towards making a blanket identification of males as experiencing difficulties in negotiating pathways to help. Although this difficulty of males is evident in relation to both help‐seeking and access to helplines, our study suggests that, at least in relation to helpline usage, when we take culture, ethnicity and sexuality into account, the help‐seeking situation may be more nuanced. This has implications in terms of enabling a cross‐section of young people to access helplines as well as with regard to helpline service development.     

英汉习语文化差异与翻译

成语、谚语、习语是语言不可分割的重要组成部分,是语言中的精华,具有极其丰富的文化底蕴。中西方在不同的文化背景下,民族传统、生活方式以及思维方式等都有着诸多差异,这些文化差异导致了中西方各自成语、谚语、习语的形成、使用与发展。英汉成语、谚语、习语分别记录了不同民族的历史,反映了不同民族的经济生活,透视了不同民族的文化心态,思维方式。针对中西方习语的文化差异与翻译技巧的阐述,旨在更好地把握两种语言的特点,增强处理语言尤其是习语的能力。     

论商标翻译的跨文化意识

商标翻译涉及到民族文化、地域文化及他国消费心理等诸多因素。它是一种跨文化翻译。译者应具有很强的跨文化意识。本文从文化的角度，探讨商标翻译。认为商标翻译必须充分考虑文化差异，努力跨越文化鸿沟；必须熟知外国语言习俗，力避他国禁忌。     

中国人口性别结构的区域差异及演变动态分析

人口性别构成是影响人类婚姻、人口再生产的基本因素，也影响国家经济、政治、文化、教育等方面的发展，也是编制经济、文化、教育、科技、卫生、人民生活、劳动、城乡建设等发展规划的重要依据。同时对于中国当前正在进行的和谐社会建设也具有重要意义。利用中国五次人口普查资料及2005年1％人口抽样资料分析了中国总人口性别比演变动态及地理分布特征。表明：（1）中国在历史上是一个性别比偏高的国家，新中国总人口性别比呈下降趋势；（2）1953到2005年，年龄性别比曲线越来越平稳，性别比最高峰值呈现有低龄组向中龄组及高龄组转移的趋势；（3）各省区之间及城乡之间的性别结构差异由大变小；（4）山区性别比高于平原。重工业城市高于其他城市。大城市高于小城市。     

吉林省城乡居民消费变化的特点及差异研究

随着城乡居民收入的提高 ,吉林省居民的消费水平有了显著变化 ,按可比价格计算的居民消费水平指数总体上呈上升趋势。进入 90年代以来 ,居民的消费构成也相应发生了很大的转变 ,但城乡之间仍然存在较大的差异。实践表明 ,在经济发展水平相对较高的条件下 ,居民消费的心理、水平、构成及其变化 ,对经济增长的影响力度势必呈现出越来越大的趋势     

Multiple Comparison Procedures: The Practical Solution

A practicing statistician looks at the multiple comparison controversy and related issues through the eyes of the users. The concept of consistency is introduced and discussed in relation to five of the more common multiple comparison procedures. All of the procedures are found to be inconsistent except the simplest procedure, the unrestricted least significant difference (LSD) procedure (or multiple t test). For this and other reasons the unrestricted LSD procedure is recommended for general use, with the proviso that it should be viewed as a hypothesis generator rather than as a method for simultaneous hypothesis generation and testing. The implications for Scheffé's test for general contrasts are also discussed, and a new recommendation is made.     

The asymptotic distribution of the partial attributable risk in cross-sectional studies

The partial attributable risk (PAR) has been introduced as a tool for partitioning the responsibility for causing an adverse event between various risk factors. It has arisen from epidemiology, but it is also a valid general risk allocation concept, which can, for example, be applied to data from customer satisfaction surveys. So far, a variance formula for the PAR has been missing so that the confidence intervals were not directly available. This paper provides the asymptotic normal distribution for the PAR determined from a cross-sectional study.     

Using the Standardized Difference to Compare the Prevalence of a Binary Variable Between Two Groups in Observational Research

Researchers are increasingly using the standardized difference to compare the distribution of baseline covariates between treatment groups in observational studies. Standardized differences were initially developed in the context of comparing the mean of continuous variables between two groups. However, in medical research, many baseline covariates are dichotomous. In this article, we explore the utility and interpretation of the standardized difference for comparing the prevalence of dichotomous variables between two groups. We examined the relationship between the standardized difference, and the maximal difference in the prevalence of the binary variable between two groups, the relative risk relating the prevalence of the binary variable in one group compared to the prevalence in the other group, and the phi coefficient for measuring correlation between the treatment group and the binary variable. We found that a standardized difference of 10% (or 0.1) is equivalent to having a phi coefficient of 0.05 (indicating negligible correlation) for the correlation between treatment group and the binary variable.