Comparison of causal effect estimators under exposure misclassification

Over the past decades, various principles for causal effect estimation have been proposed, all differing in terms of how they adjust for measured confounders: either via traditional regression adjustment, by adjusting for the expected exposure given those confounders (e.g., the propensity score), or by inversely weighting each subject's data by the likelihood of the observed exposure, given those confounders. When the exposure is measured with error, this raises the question whether these different estimation strategies might be differently affected and whether one of them is to be preferred for that reason. In this article, we investigate this by comparing inverse probability of treatment weighted (IPTW) estimators and doubly robust estimators for the exposure effect in linear marginal structural mean models (MSM) with G-estimators, propensity score (PS) adjusted estimators and ordinary least squares (OLS) estimators for the exposure effect in linear regression models. We find analytically that these estimators are equally affected when exposure misclassification is independent of the confounders, but not otherwise. Simulation studies reveal similar results for time-varying exposures and when the model of interest includes a logistic link.     

英语歧义现象及其积极作用

歧义是一种语言形式能够表达两种或两种以上意义的语言现象，它普遍存在于世界各种语言中。一般认为歧义会有碍交流，但如果人们加以巧妙运用，却也能起到积极的作用，更好地达到某一交际目的。文章主要分析了几类英语歧义现象以及歧义在幽默笑话、广告、文学作品中的积极运用。     

后危机背景下大学生就业能力及其结构维度的构建研究简

文章针对后危机背景下对大学生能力素质的新要求，探讨了大学生就业能力的概念和结构，并从我国当前经济社会发展阶段与高等教育、社会文化观念、学生就业的实际情况出发，形成了大学生就业能力的五个维度，即基础能力、专业能力、个人特质、适应能力及实践创新能力。     

The Role of Criminal Social Identity in the Relationship between Criminal Friends and Criminal Thinking Style within a Sample of Recidivistic Prisoners

Previous research suggests a direct relationship between criminal friends and criminal thinking style; however, social identity theory proposes that identity mediates the impact of social group members on development of thinking styles. This research project is the first attempt to empirically test the mediating role of criminal social identity in the development of criminal thinking styles within a recidivistic prison sample (N = 312). The structural equation model of criminal thinking style presented and tested in this study supports the central predictions of social identity theory, with findings demonstrating an indirect effect of antisocial friend associations on criminal thinking through in-group affect and in-group ties with criminal in-group members that reflect two of three dimensions of the measure of criminal social identity applied in the current study. Further implications in relation to theory and previous studies are discussed.     

Neighborhood Conditions,Parenting, and Adolescent Functioning

ABSTRACT

This study examined youth self-reported data from a 4-year longitudinal study of 5th and 8th grade youth and their parents. Relationships between neighborhood conditions, parenting, and youth antisocial behavior were tested using structural equation modeling. The findings of this study appear to suggest there are two social forces that affect youth antisocial behavior: parenting and neighborhood conditions. Higher levels of parental acceptance and monitoring are directly and significantly associated with lower levels of youth antisocial behavior, as are higher levels of community social integration and lower levels of youth loneliness. Overall, it was found that some measures of neighborhood conditions and some measures of parenting were relatively equally predictive of youth antisocial behavior. Other measures of neighborhood conditions were predictive of parenting, but not strongly enough to also impact adolescent functioning.     

On the improvement of one-sided S control charts

The most common charting procedure used for monitoring the variance of the distribution of a quality characteristic is the S control chart. As a Shewhart-type control chart, it is relatively insensitive in the quick detection of small and moderate shifts in process variance. The performance of the S chart can be improved by supplementing it with runs rules or by varying the sample size and the sampling interval. In this work, we introduce and study one-sided adaptive S control charts, supplemented or not with one powerful runs rule, for detecting increases or decreases in process variation. The properties of the proposed control schemes are obtained by using a Markov chain approach. Furthermore, a practical guidance for the choice of the most suitable control scheme is also provided.     

社会认知偏差:群体性事件生成的社会心理启动根源

社会认知偏差是群体性事件生成的深层次社会心理现象,通过对山东部分地区进行抽样调查,并结合近几年来全国群体性事件典型案例的分析发现,生成群体性事件的社会认知偏差,主要包括事件诱因责任归因偏差、行为模式结果预期偏差和行为结果价值偏差。因此,改善法的实施现状,消除社会认知偏差;提高公众法律意识,优化社会认知;建立心理危机干预队伍,合理引导社会认知,是群体性事件社会认知偏差的有效干预对策。     

青年领导干部要增强宪法意识纪念1982年宪法实施20周年

目前,青年领导干部中表现出来的宪法意识偏差主要表现为轻视宪法学习、缺乏宪法信仰;忽视宪法特性,降低宪法地位.相伴而生的主要违宪行为即是违背宪法精神、超限行使权力;违反宪法规定,侵犯公民权利.因此,必须要以有计划的培训考核;推动青年领导干部学习"三个代表"思想与宪法精神的一致性、学习宪法条款;强化人民民主与权利观念;以转变领导方式和工作方法去落实依法行政;发挥学习、遵守、使用宪法的表率作用.     

土地革命战争时期共产国际“左”倾错误理论发端新探

土地革命战争时期 ,在共产国际“左”倾理论的指导下 ,中共先后出现了三次“左”倾关门主义错误。依马克思主义的政党理论 ,国民党不仅是一个政党 ,而且是一个资产阶级性质的政党。而共产国际视资产阶级性质的国民党为统一战线的组织形式 ,从而割裂了国民党与资产阶级间的密不可分的联系 ,必然在认识上出现一误区 ,即将大资产阶级与民族资产阶级、小资产阶级混为一谈。一旦大资产阶级叛变革命 ,共产国际便视民族资产阶级、小资产阶级破坏统一战线 ,从而打击它们。