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251.
Stepparent–child relationship quality is linked to stepfamily stability and children's well‐being. Yet, the literature offers an incomplete understanding of factors that promote high‐quality stepparent–child relationships, especially among socio‐demographically diverse stepfamilies. In this study, we explore the association between stepfather involvement and stepfather–child relationship quality among a racially diverse and predominately low‐income sample of stepfamilies with preadolescent children. Using a subsample of 467 mother–stepfather families from year 9 of the Fragile Families and Child Wellbeing Study, results indicate that stepfather involvement is positively associated with stepfather–child relationship quality. This association is statistically indistinguishable across racial groups, although the association is stronger among children in cohabiting stepfamilies compared to children in married stepfamilies.  相似文献   
252.
Summary.  In a large, prospective longitudinal study designed to monitor cardiac abnormalities in children born to women who are infected with the human immunodeficiency virus, instead of a single outcome variable, there are multiple binary outcomes (e.g. abnormal heart rate, abnormal blood pressure and abnormal heart wall thickness) considered as joint measures of heart function over time. In the presence of missing responses at some time points, longitudinal marginal models for these multiple outcomes can be estimated by using generalized estimating equations (GEEs), and consistent estimates can be obtained under the assumption of a missingness completely at random mechanism. When the missing data mechanism is missingness at random, i.e. the probability of missing a particular outcome at a time point depends on observed values of that outcome and the remaining outcomes at other time points, we propose joint estimation of the marginal models by using a single modified GEE based on an EM-type algorithm. The method proposed is motivated by the longitudinal study of cardiac abnormalities in children who were born to women infected with the human immunodeficiency virus, and analyses of these data are presented to illustrate the application of the method. Further, in an asymptotic study of bias, we show that, under a missingness at random mechanism in which missingness depends on all observed outcome variables, our joint estimation via the modified GEE produces almost unbiased estimates, provided that the correlation model has been correctly specified, whereas estimates from standard GEEs can lead to substantial bias.  相似文献   
253.
In an environment where (i) potential risks to subjects participating in clinical studies need to be managed carefully, (ii) trial costs are increasing, and (iii) there are limited research resources available, it is necessary to prioritize research projects and sometimes re-prioritize if early indications suggest that a trial has low probability of success. Futility designs allow this re-prioritization to take place. This paper reviews a number of possible futility methods available and presents a case study from a late-phase study of an HIV therapeutic, which utilized conditional power-based stopping thresholds. The two most challenging aspects of incorporating a futility interim analysis into a trial design are the selection of optimal stopping thresholds and the timing of the analysis, both of which require the balancing of various risks. The paper outlines a number of graphical aids that proved useful in explaining the statistical risks involved to the study team. Further, the paper outlines a decision analysis undertaken which combined expectations of drug performance with conditional power calculations in order to produce probabilities of different interim and final outcomes, and which ultimately led to the selection of the final stopping thresholds.  相似文献   
254.
This article offers a radical reinterpretation of the chronology of control over reproduction in England's history. It argues that, as a result of post–World War II policy preoccupations, there has been too narrow a focus in the literature on the significance of reductions in marital fertility. In England's case this is conventionally dated to have occurred from 1876, long after the industrial revolution. With a wider angle focus on “reproduction,” the historical evidence for England indicates that family planning began much earlier in the process of economic growth. Using a “compositional demography” approach, a novel social pattern of highly prudential, late marriage can be seen emerging among the bourgeoisie in the course of the eighteenth and early nineteenth centuries. There is also evidence for a more widespread resort to such prudential marriage throughout the population after 1816. When placed in this context, the reduction in national fertility indexes visible from 1876 can be seen as only a further phase, not a revolution, in the population's management of its reproduction.  相似文献   
255.
We use data from the National Longitudinal Survey of Youth to estimate changes in binge drinking, marijuana use, and cigarette smoking surrounding young adults' first experiences of cohabitation and marriage. Both marriage and cohabitation are accompanied by decreases in some risk behaviors, but reductions surrounding marriage are larger and most consistent, particularly for men. Binge drinking and marijuana use respond to these events, especially marriage, but smoking does not.  相似文献   
256.
In this qualitative study, the authors examined the experience of discrimination and its relationship to the career development trajectory of 9 female‐to‐male transgender persons. Participants were between 21 and 48 years old and had a variety of vocational experiences. Individual semistructured interviews were conducted via telephone and analyzed using grounded theory methodology. The emergent model consisted of forms of discrimination and impact of discrimination. These components intersected with the career development trajectory. Participants provided their own suggestions for improving the workplace environment. Counseling, advocacy, and future research implications are discussed.  相似文献   
257.
This study examines the millennials’ perceptions of Confucianism and their influence on their personal values and behavioural orientations with a sample from Taiwan to address the research gap in intergenerational and intercultural human resource development (HRD) research. It complements results from western research and offers important insights to worldwide managers and HRD practitioners for talent development and learning-related initiatives when working with employees and organizations with East Asia backgrounds. The concept of Confucius’ process of developing into a virtuous person seems to be rooted in the Taiwanese millennials’ mind, who as guided by Confucius tend to have a primary focus on accumulating knowledge, practicing moral behaviour, and correcting one’s mind and behaviour. Along with the globalization and technology advancement, the sampled millennials hold a strong traditional values of Confucian philosophy; yet, such strong cultural values may be attenuated a great deal after exposing to western culture over times. The Confucian virtue (moral) behaviour practice, harmonious relations, and self-cultivation are found as top three factors of Confucian values. Implications for HRD practices and recommendations for future research are discussed.  相似文献   
258.
Abstract

The information environment that social movements face is increasingly complex, making traditional assumptions about media, messaging, and communication used in social movement studies less relevant. Building on work begun within the study of digital protest, we argue that a greater integration of political communication research within social movement studies could offer substantial research contributions. We illustrate this claim by discussing how a greater focus on audiences and message reception, as well as message context, could advance the study of social movements. Specifically, we discuss a range of topics as applied to movement research, including information overload, selective attention, perceptions of bias, the possibilities that entertainment-related communications open up, and priming, among other topics. We suggest the risks of not adapting to this changing information environment, and incorporating insights from political communication, affect both the study of contemporary (including digital) protest, as well as potentially historical protest. The possibilities opened up by this move are immense including entirely new research programs and questions.  相似文献   
259.
ABSTRACT

Research focusing on young people’s career trajectories has emphasised ‘graduate employability’ with much less attention being afforded to the employability strategies used by disadvantaged youth, including the social, political and labour market contexts in which these emerge. This study explores how young people enrolled in entry-level, vocational training courses in Australia attempt to enhance their employability. Interviews explored perceptions of individual employability, the strategies utilised to improve employability, and the economic, personal and employment consequences of these strategies. Three main employability strategies were identified: gaining qualifications to meet employment expectations; securing work experience in a competitive labour market; and addressing economic and social challenges to secure and sustain employment. The study reveals how the dominant narratives of employability in education and employment policy are misaligned with the economic, social and labour market challenges faced by disadvantaged job-seekers with respect to notions of career and ‘fit’ between the individual and the labour market. Policy responses need to take account of the diverse ‘bottom up’ experiences and circumstances of different cohorts of young people.  相似文献   
260.
Two types of welfare states are compared in this article. Differences in procedural rights for young unemployed at the level of service delivery are analyzed. In Australia, rights are regulated through a rigid procedural justice system. The young unemployed within the social assistance system in Sweden encounter staff with high discretionary powers, which makes the legal status weak for the unemployed but, on the other hand, the system is more flexible. Despite the differences, there is striking convergence in how the young unemployed describe how discretionary power among street‐level staff affects their procedural rights. This result can be understood as a result of similar professional norms, work customs and occupational cultures of street‐level staff, and that there is a basic logic of conditionality in all developed welfare states where procedural rights are tightly coupled with responsibilities.  相似文献   
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