On the preservation of copula structure under truncation

The author characterizes the copula associated with the bivariate survival model of Clayton (1978) as the only absolutely continuous copula that is preserved under bivariate truncation.     

Evaluating a private foundation's health program

Public policy decisions in health are increasingly difficult and expensive. Although there will never be enough information available, private foundations can help to bridge the most important gaps in knowledge. Larger foundations may also wish to respond to those who doubt the value of foundation activities. This article reviews the experiences over the past eight years of The Robert Wood Johnson Foundation in employing evaluation and related social research procedures in the planning and implementation of a major philanthropic effort to improve the health and medical care of Americans. Discussed are the still evolving Foundation evaluation framework, the unanticipated problems in undertaking specific evaluations, and the substantive findings of some of the studies.     

Feminism and science in Masters of Sex

This article examines the fictional characterization of the real-life sex researchers and scientists William H. Masters and Virginia E. Johnson in the Showtime television program Masters of Sex (2013–2016). The historical Johnson had a complicated relationship with second-wave feminism: she disdained the movement and was interested primarily in improving heterosexual marriages and the sex lives of married couples. The Johnson character speaks in a language of postfeminism with minimal interest in collective action and broader social change. However, second-wave feminists later used her and Masters’ research in order to support their own beliefs about sexual autonomy and freedom, within and beyond marriage and heterosexuality. The television program demonstrates Johnson’s importance to both phases of her and Masters’ research—in the first phase, when they are based in a hospital and university environment, and in the second, when they establish their own research institute and raise funds directly from the clients that they serve. Johnson exemplifies postfeminist depictions of ambitious women in prestige television, her aim to have a successful career and marriage conflict, and while she is willing to compromise scientific values to serve her own goals, her male colleagues temper that ambition in service of “objective” science.     

Ethical dilemmas in evaluating programs with family court related clients

Two ethical dilemmas are discussed; breaching client confidentiality in order to intervene in the client's illegal behavior, and defining the role of evaluator as expert witness. The evaluation context concerns a combined program development and evaluation project with clients involved in family court proceedings for child abuse or neglect. Different perspectives, approaches, and experiences in resolving each dilemma are reviewed. The conclusion argues that approaches to ethical dilemmas in evaluation projects must go beyond techniques to disguise data, to include an assessment of the values and value commitments connected to the different roles an evaluator must perform.     

Shape properties of the g-and-h and johnson families

A substantial part of examining the properties of a distributional family consists of considering shape properties. It is important that this examination is sufficiently thorough to enable understanding of the behaviour of the family, its comparison with others, and to assist in developing future families. The g-and-h distributions and the Johnson system are examined here in these terms     

约翰逊期刊散文中的女性想象

一般读者的印象,约翰逊嫌忌女性.传统的两性观念在他身上依然起作用,不过在期刊散文《漫步者》中,约翰逊满怀同情地刻画了日常生活中形形色色的妇女.将《漫步者》置于18世纪英国社会的历史语境中,探究其中有关女性的热点话题:她们在消费追求和欲望表达中的尴尬境遇,在婚姻和教育上面临的种种束缚.约翰逊深知社会对女性的偏见和不公,坚持不懈地倡言女性教育.     

样本数据正态性转换时变VaR

虽然摒弃估测VaR值的正态分布假设已成为当今金融学研究的一个重要方面及其热点问题,但利用正态性转换先处理样本数据,然后再利用基于正态分布假定下的VaR估测方法来修正VaR的估值则是精准化VaR计算的一条有效途径。本文试图在考虑收益率分布时变性特征的情况下,利用正态性转换处理样本数据这一思想来细化和改善我国证券市场不同运行阶段的VaR估测。相应的经验分析表明：我国证券市场收益率分布不仅存在时变性特征,而且牛熊市期间的VaR值存在显著的差异。Johnson转换函数之SU型适宜作为样本数据正态性转换函数,经转换样本数据估测的VaR值既提高了VaR估值的准确性,又改善了VaR估测精细化的有效性。     

A Review of: “An Insider's View of Sexual Science since Kinsey” edited by Ira L. Reiss

Masters, Johnson and Kolodny a volume which claims that risk understated by public This paper presents a brief analysis of the key data contained in MJK's book using simple mathematical models. The paper shows that the unconditional per partner risk of infection for the sexually active heterosexuals in the MJK study is exceeded by the similar risk for typical gay men in San Francisco by a factor of nearly fifty; that the conditional probability of infection given exposure via vaginal sex is about 2% for men and 3% for women per partner (both of these numbers are lower than the corresponding infec‐tivities for unprotected anal sex among gay men); and that an AIDS epidemic among the general heterosexual population would occur only if the average number of sexual partners per year exceeds about 5.3, an unlikely number given the data in MJK's study.     

Johnson and Johnson phantom recall: A fall from grace or a re-visit of the ghost of the past

This paper addresses and evaluates the case of Johnson and Johnson's crisis management. In an attempt to analyze the case, the paper overviews Johnson and Johnson's Tylenol product tampering in the 1980s and its recent phantom recall of Children's Motrin. The assessment of the company's crisis management was done using the anticipatory model of crisis management (AMCM). Conclusions drawn from this assessment put Johnson and Johnson in a different spotlight than it had enjoyed during its earlier crisis management efforts. Implications for organizational crisis management efforts are also presented.