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51.
This article describes findings from a series of focus groups conducted with formal kinship caregivers in Maryland. The findings reveal that kinship caregivers are committed to providing safety and stability for the children placed with them. The findings also suggest that caregiving can be a significant adjustment for many kinship caregivers and that expanded support services are needed to enhance their relationship with the child welfare agency. 相似文献
52.
Variable selection for multivariate nonparametric regression is an important, yet challenging, problem due, in part, to the infinite dimensionality of the function space. An ideal selection procedure should be automatic, stable, easy to use, and have desirable asymptotic properties. In particular, we define a selection procedure to be nonparametric oracle (np-oracle) if it consistently selects the correct subset of predictors and at the same time estimates the smooth surface at the optimal nonparametric rate, as the sample size goes to infinity. In this paper, we propose a model selection procedure for nonparametric models, and explore the conditions under which the new method enjoys the aforementioned properties. Developed in the framework of smoothing spline ANOVA, our estimator is obtained via solving a regularization problem with a novel adaptive penalty on the sum of functional component norms. Theoretical properties of the new estimator are established. Additionally, numerous simulated and real examples further demonstrate that the new approach substantially outperforms other existing methods in the finite sample setting. 相似文献
53.
Recent developments in superhero comics have seen positive changes to the representation of characters and storylines. In this article, we use examples of the increase in female characters and female-led titles, the swapping of gender from a male character to a female one, and the increase in female writers and artists to investigate how the representation of female characters has evolved. We argue that these changes mark an intervention on behalf of female creators in keeping with the theory and practice of third-wave feminism. We also argue that this evolution provides a good example of how third-wave feminism remains indebted to and continues the important work of second-wave feminism. The article explores the important role of intersectionality alongside themes relating to the body and sexuality, violence, solidarity and equality, and girlhood in comics such as Birds of Prey, Harley Quinn, Ms. Marvel, Captain Marvel, and A-Force. 相似文献
54.
Population and Environment - This study investigates how geographic isolation interacts with declining environmental and economic conditions in Kiribati, an island nation wherein which limited... 相似文献
55.
The Food and Drug Administration may license OraQuick?, a rapid HIV test, for over-the-counter (OTC) sale. This study investigated whether HIV-uninfected, non-monogamous, gay and bisexual men who never or rarely use condoms would use the test with partners as a harm-reduction approach. Sixty participants responded to two computer-assisted self-interviews, underwent an in-depth interview, and chose whether to test themselves with OraQuick. Over 80% of the men said they would use the kit to test sexual partners or themselves if it became available OTC. Most participants understood that antibody tests have a window period in which the virus is undetectable, yet saw advantages to using the test to screen partners; 74% tested themselves in our offices. Participants offered several possible strategies to introduce the home-test idea to partners, frequently endorsed mutual testing, and highlighted that home testing could stimulate greater honesty in serostatus disclosure. Participants drew distinctions between testing regular versus occasional partners. Non-monogamous men who have sex with men, who never or rarely use condoms, may nevertheless seek to avoid HIV. Technologies that do not interfere with sexual pleasure are likely to be used when available. Studies are needed to evaluate the advantages and disadvantages of using OTC rapid HIV tests as one additional harm-reduction tool. 相似文献
56.
ABSTRACTHome Futures, the major exhibition at the Design Museum, London, and IKEA Museum Sweden, explores the trajectory of radical domestic visions from the 1960s—but it seems that the future was closer in the 1960s than now. 相似文献
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58.
Russell L. Curtis 《The Sociological quarterly》1974,15(2):277-293
The critical limitation of the interpretation of schools as independent normative systems is the failure to demonstrate that observed student orientations are acquired in schools rather than in other settings such as the home or community. The problem is approached here as a question of whether students' orientations vary with lengths of membership in the same school organization. Data were examined for 7,954 students in 19 schools which contained grade-lengths 7-9, 7-12, 9-12, and 10-12. The analyses indicated that the distinctiveness of school normative climates is slightly but positively associated with lengths of school membership when school size is controlled. While schools can be viewed as relatively distinct systems, they should also be seen as highly permeable in the midst of their community and home environments. 相似文献
59.
60.
Les études antérieures concernant l'adhésion volontaire à des associations aux États‐Unis ont menéà des conclusions contradictoires concernant la diminution du membership. Nous analysons ici des participations nominales et actives à des associations à l'échelle du Canada, des États‐Unis ainsi que de 13 autres pays au début des années 1980 et au début des années 1990. Des comparaisons en fonction du temps sont faites, incluant les syndicats et les organisations religieuses, et excluant ces groupes, avant et après des'contrôles. Les résultats fournissent peu de preuves de déclin, pour le Canada, les États‐Unis ou les autres nations, en particulier pour des adhésions actives. Sans et avec contrôles, les États‐Unis, la République fédérale d'Allemagne et les Pays‐Bas font état d'augmentations significatives d'adhésions actives à des syndicats. Seule l'Espagne affiche des baisses substantielles d'adhésions actives au cours de cette période. Mis à part quelques exceptions, le tableau général en est un de stabilité, sans changement significatif. Previous studies of voluntary association membership in the United States have generated inconsistent conclusions about whether membership has declined. We analyse here both nominal and active association involvements for national samples from Canada, the U.S., and 13 other societies in the early 1980s and early 1990s. Temporal comparisons are made, with union and religious memberships both included and excluded, before and after controls. The results provide little evidence of decline, for Canada, the U.S., or the other nations, particularly for working memberships. Both without and with controls, the U.S., West Germany, and the Netherlands exhibit significant increases in working memberships. Only Spain shows substantial declines in working memberships over the period. With few exceptions, the overall pattern is one of stability, or no significant change. 相似文献