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Twenty years ago, the National Institute of Child Health and Human Development (NICHD) issued a request for proposals that resulted in the National Survey of Families and Households (NSFH), a unique survey valuable to a wide range of family scholars. This paper describes the efforts of an interdisciplinary group of family demographers to build on the progress enabled by the NSFH and many other theoretical and methodological innovations. Our work, also supported by NICHD, will develop plans for research and data collection to address the central question of what causes family change and variation. We outline the group's initial assessments of orienting frameworks, key aspects of family life to study, and theoretical and methodological challenges for research on family change. Finally, we invite family scholars to follow our progress and to help develop this shared public good.  相似文献   
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When the necessary conditions for a BIBD are satisfied, but no BIBD exists, there is no simple answer for the optimal design problem. This paper identifies the E-optimal information matrices for any such irregular BIBD setting when the number of treatments is no larger than 100. A- and D-optimal designs are typically not E-optimal. An E-optimal design for 15 treatments in 21 blocks of size 5 is found.  相似文献   
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The purpose of the study reported in this paper was to explore the gambling behaviours of young Thai people resident in Melbourne, Australia; the meaning that gambling had for this group; whether the attitudes of these young Thai people towards gambling changed as a result of their location in a society with more relaxed attitudes towards gambling than in Thailand; whether any such changes of attitude were reflected in gambling participation; and whether such participation had demonstrably negative impacts. It was also hoped to gain some insight into whether pre-existing beliefs and attitudes provided a protective factor in relation to the respondent's gambling. Fifty young people aged 18 to 25, forming five natural friendship networks, were observed on over 180 occasions in relation to their gambling and leisure behaviours. A number of major themes were identified from the observational data including money, fortune and luck, consumerism, entertainment, spirituality and superstition, gambling and family values. It was found that despite high levels of gambling participation there was little, if any, evidence of problematic play or its consequences. Strong adherence to values espoused in families of origin and to complex beliefs about luck in the context of beliefs about spirituality and the location of gambling within the context of a range of leisure pursuits served as protective factors for these young people.  相似文献   
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To meet the demographic development, measures were initiated by the Swedish government entailing changed conditions for municipal eldercare, such as assisted living. Participant observation is used to study the daily use of common spaces in 14 assisted living units in Gothenburg. The results show examples where the current use diverges from the intended use and suggest diverging objectives and conflicts of use. The observations indicate that the degree of usability is determined by the physical environment itself in some cases, by the users and by changes in use in other cases, and by a combination of both in some cases.  相似文献   
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Homelessness is an ongoing challenge for many families and individuals. Many struggle to meet their basic needs for food, clothing and shelter. Unfortunately, we know very little about the people who directly help homeless people meet these needs. The present study examines the relationships between empathy, religion, household income, political orientation, gender, race, and people's expressed willingness to assist the homeless. Results demonstrate a strong and consistent link between empathy and willingness to help. Moderately consistent associations are found for religion and race. Limitations, suggestions for further research, and for practical application are discussed.  相似文献   
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