A pattern-mixture odds ratio model for incomplete categorical data

Most models for incomplete data are formulated within the selection model framework. Pattern-mixture models are increasingly seen as a viable alternative, both from an interpretational as well as from a computational point of view (Little 1993, Hogan and Laird 1997, Ekholm and Skinner 1998). Whereas most applications are either for continuous normally distributed data or for simplified categorical settings such as contingency tables, we show how a multivariate odds ratio model (Molenberghs and Lesaffre 1994, 1998) can be used to fit pattern-mixture models to repeated binary outcomes with continuous covariates. Apart from point estimation, useful methods for interval estimation are presented and data from a clinical study are analyzed to illustrate the methods.     

The Employment Experience of Refugees in the Netherlands1

This study focuses on the economically disadvantaged position of refugees. We use survey data of refugees from Somalia, Iran, Afghanistan, Iraq, and the former Yugoslavia in the Netherlands, to analyze refugees’ odds of employment and their occupational status. In line with human capital and social capital theory, we find that host country specific education, work experience, language proficiency, and contacts with natives are positively related to the chances of employment and occupational status. The study shows that health problems, integration courses, and the time spent in refugee reception centers form important additional explanations of the economic integration of refugees.     

Bayesian variable selection with spherically symmetric priors

We propose that Bayesian variable selection for linear parametrizations with Gaussian iid likelihoods should be based on the spherical symmetry of the diagonalized parameter space. Our r-prior results in closed forms for the evidence for four examples, including the hyper-g prior and the Zellner–Siow prior, which are shown to be special cases. Scenarios of a single-variable dispersion parameter and of fixed dispersion are studied, and asymptotic forms comparable to the traditional information criteria are derived. A simulation exercise shows that model comparison based on our r-prior gives good results comparable to or better than current model comparison schemes.     

Morality and Nuclear Energy: Perceptions of Risks and Benefits,Personal Norms,and Willingness to Take Action Related to Nuclear Energy

We examined factors underlying people's willingness to take action in favor of or against nuclear energy from a moral perspective. We conducted a questionnaire study among a sample of the Dutch population (N = 123). As expected, perceptions of risks and benefits were related to personal norms (PN), that is, feelings of moral obligation toward taking action in favor of or against nuclear energy. In turn, PN predicted willingness to take action. Furthermore, PN mediated the relationships between perceptions of risk and benefits and willingness to take action. In line with our hypothesis, beliefs about the risks and benefits of nuclear energy were less powerful in explaining PN for supporters compared to PN of opponents. Also, beliefs on risks and benefits and PN explained significantly more variance in willingness to take action of opponents than of supporters. Our results suggest that a moral framework is useful to explain willingness to take action in favor of and against nuclear energy, and that people are more likely to protest in favor of or against nuclear energy when PN are strong.     

企业雇员组织承诺三因素模型实证研究

文章以来自西安15家企业中的742名雇员为样本,采用协方差结构等式模型对组织承诺三因素模型在中国企业雇员中的适用性进行了初步考察。研究主要发现:测量感情承诺和规范承诺的量表具有可接受的信度,但是测量连续承诺的量表信度较低。三个量表表现出可接受的会聚和区分效度,但是效标效度还需要进一步的研究。     

热力学教学重点难点剖析

本文针对热力学教学内容的重点和难点进行剖析,对外界分析法作简要的评论,指出随着教学体系和教学内容的改革,热力学教学的重点和难点仍集中在一些基本概念和热力学第一定律、热力学第二定律等内容上,并针对这些内容的讲解提出看法和建议.同时针对焓的物理意义、热力学第二定律的说法等一些存在不同现点的问题,通过分析论证,提出作者的观点.     

What's Playing in the Organizational Theater? Collusive Relationships in Management

This article takes as its point of departureconcepts derived from couple therapy to betterunderstand collusive relationships in organizations. Aswe examine these dysfunctional workplace relationships— these interpersonal gridlocks —four main types of collusive superior subordinateinteraction patterns are identified — thenarcissistic, the controlling, the paranoid, and thesadomasochistic — and the consequences of each such dyad in organizationsare explored. In conclusion, the paper presents a numberof recommendations on how to recognize the presence ofsuch collusive arrangements (taking leadership behavior as a point of departure) and suggestspreventive steps that can be taken.     

“人类灵魂工程师”的教育价值观反思

人们常把教师喻为人类灵魂的工程师。这种理念把教育看作一项工程 ,把学生当作可以改造和加工的“毛坯” ,把教学作为执行建筑蓝图的过程 ,则具有工业时代教育自身无法克服的缺陷 ,值得当今教育工作者反思     

略论旅游服务语言艺术

旅游服务语言是旅游工作者与旅游者之间为了表达愿望、交流感情、进行交往和解决各种问题而使用的一种媒介和工具。它具有规范性与灵活性统一、文明性和职业性等个性特征。在运用旅游服务语言时应充分关注宾客的个性特点、突出语言的针对性 ,应充分发挥无声语言的作用 ,增强语言的感染力 ,同时用词规范准确得体、通俗易懂 ,并根据语境调节语速语调 ,灵活运用多种表现手法 ,方能取得客我双方满意的效果     

The role of litigation in human research accountability

This essay examines and analyzes the recent and dramatic series of personal injury lawsuits instituted against those individuals and institutions that conduct and monitor human research. It discusses the social engineering functions of tort litigation, outlines the legal elements and viability of lawsuits against those who conduct and monitor human research, and evaluates and predicts what role tort litigation will play in fulfilling the goals of accountability in the context of human research and human research regulation. In general, tort law engenders two forms of accountability: retrospective and prospective. Retrospective accountability is backward looking, focusing on harms that have already occurred, their culprits, and the reimbursement of individuals for their injuries. Prospective accountability is forward looking in that it encourages actors and institutions to fulfill responsibilities toward individuals in order that harm does not occur, or at least that the risk of harm is decreased. This article argues that research litigation is not, and will probably never become, an effective means of ensuring retrospective accountability in regard to research injuries and ethical violations. Paradoxically though, the current wave of research litigation may serve an important and even key role in encouraging and ensuring prospective accountability.