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By 2010 there will be close to two million orphans in South Africa, mainly as a result of HIV/AIDS. This paper assesses different approaches to the care and support of children orphaned by AIDS and other vulnerable children, as well as the cost-effectiveness of each approach. Using a typology of care and essential elements of care, six approaches are evaluated: informal, non-statutory foster care; community-based support; home-based care; unregistered residential care; statutory adoption and fostering; and statutory residential care. A cost-effectiveness analysis assessed actual programs and the costs of providing a minimum standard of care for the six approaches. High costs are associated with formal models of care. Informal approaches may lack the resources to meet children's rights. Resources should be largely allocated to the more cost-effective, informal, community-based structures, but formal models will still be needed for those children who cannot be placed elsewhere.  相似文献   
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In this paper I present evidence that Detroit African Americans are participating in a recent sound change which is typically associated with some White, but not African American, varieties in the American South. Although both Southern White and African American speakers monophthongize /ai/ in pre-voiced phonetic contexts ( tide ), the spread of the monophthongal or glide-reduced variant to pre-voiceless environments ( tight ) is a salient characteristic of some subregions of the Southern U.S. I report a leveling pattern in which /ai/ monophthongization has expanded to the salient pre-voiceless context in Detroit African American English (AAE). I explain this is in terms of a change in the group with whom African American speakers perceive themselves as saliently contrastive.  相似文献   
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In recent years researchers have paid substantial attention to the issue of college students' alcohol use. One limitation to the current literature is an over reliance on retrospective, self-report survey data. This article presents field methodologies for measuring college students' alcohol consumption in natural drinking environments. Specifically, we present the methodology from a large field study of student drinking environments along with some illustrative data from the same study. Field surveys, observational methods, sampling issues, and breath alcohol concentration sample collection are detailed.  相似文献   
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Drawing on 48 interviews with science, technology, engineering and mathematics (STEM) doctoral students at a private research university in the United States (US), we examine how students make sense of the preponderance of men at the faculty level despite increasing gender parity among students. Students' primary explanatory frame, historical bias, suggests that the gender gap will disappear when enough women attain their doctorates (PhDs). Competing frames include innate and constructed gender difference and the perceived incompatibility between a woman's body clock and an academic tenure clock. We argue that the frames that students use to explain the gender gap shed light on the cultural context of STEM, which is characterized by a tension between the belief in a meritocratic system and the acknowledgement of structural inequality. We suggest that men and women's preference for explanations that preclude bias, in light of women students' own experiences with sexism in graduate school, contributes to the reproduction of inequality by rendering invisible structural barriers to gender equality.  相似文献   
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