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11.
We find a strong positive raw correlation between black exposure to whites in their school district and the prevalence of later mixed-race (black-white) births, consistent with the literature on residential segregation and endogamy. However, that relationship is significantly attenuated by the addition of a few control variables, suggesting that individuals with higher propensities to have mixed-race births are more likely to live in desegregated school districts. We exploit quasi-random variation from court-ordered school desegregation to estimate causal effects of school desegregation on mixed-race childbearing, finding small to moderate effects that are largely statistically insignificant. Because the upward trend across cohorts in mixed-race childbearing was substantial, separating the effects of desegregation plans from secular cohort trends is difficult; results are sensitive to how we specify the cohort trends and to the inclusion of Chicago/Cook County in the sample. The fact that the addition of a few control variables substantially weakens the cross-sectional relationship between lower levels of school segregation and higher rates of mixed-race childbearing suggests that a substantial portion of the observed correlation is likely due to who chooses to live in places with desegregated schools. Researchers should be cautious about interpreting raw correlations between segregation—whether residential or school—and other outcomes as causal. Our results also point to the need to carefully explore specification of cohort effects in quasi-experimental designs for treatments where cumulative exposure is important. 相似文献
12.
Mary Whiteside Robyn Smith Jana Gazarek Francesca Bridge Nora Shields 《Australian Social Work》2016,69(4):417-427
Evidence-based practice (EBP) is upheld as best practice in health and human services but there is a need for more research on how this approach can be enabled in day-to-day practice. This qualitative study examined EBP with allied health managers and practitioners in a health service network (n = 17). The findings highlight the systemic nature of EBP and the extent to which it involves both individual and environmental attributes. Individual attributes include clear understanding of EBP, relevant knowledge and skills, and motivation and passion. Environmental attributes are the presence of an organisational culture that values and prioritises EBP and an integrated mix of research support services, professional development activities, supervision and mentorship, and university partnerships. Theoretical frameworks can be useful for making sense of complex processes, planning, and evaluating change. Therefore, the findings are presented as a framework incorporating reflective questions relating to the elements identified as enabling EBP. 相似文献
13.
We give a critical synopsis of classical and recent tests for Poissonity, our emphasis being on procedures which are consistent against general alternatives. Two classes of weighted Cramér–von Mises type test statistics, based on the empirical probability generating function process, are studied in more detail. Both of them generalize already known test statistics by introducing a weighting parameter, thus providing more flexibility with regard to power against specific alternatives. In both cases, we prove convergence in distribution of the statistics under the null hypothesis in the setting of a triangular array of rowwise independent and identically distributed random variables as well as consistency of the corresponding test against general alternatives. Therefore, a sound theoretical basis is provided for the parametric bootstrap procedure, which is applied to obtain critical values in a large-scale simulation study. Each of the tests considered in this study, when implemented via the parametric bootstrap method, maintains a nominal level of significance very closely, even for small sample sizes. The procedures are applied to four well-known data sets. 相似文献
14.
Using emergent theme analysis of qualitative interview data in combination with quantitative survey data, the role of religion in the lives of immigrant youth was explored. Latino, Haitian, and Chinese teenagers described, in their own rich words, the significance of religion to them; their responses are reflected in themes that point to the potential protective role of religion for some immigrant groups. 相似文献
15.
Identity politics and citizenship are often envisaged in dichotomous terms, but cosmopolitan theorists believe commitments to ??thin?? universal values can be generated from divergent ??thick?? positions. Yet, they often gloss over the ways in which the nexus of thick and thin is negotiated in practice??a weak link in the cosmopolitan argument. To understand this nexus better, we turn to women??s rights organizations (WROs) in polarized Turkey to show that women affiliated with rival camps (e.g., pro-religious/pro-secular, Turkish/Kurdish, liberal/leftist) can mobilize over issues like empowerment, violence against women, and education. However, thick readings of these issues inflect upon collaboration. This has spurred pro-religious and Kurdish women to develop strategies that flag their specific concerns. As such, mutual recognition along cosmopolitan lines appears possible??and is reinforced through iterative encounters??but is not necessarily negotiated between equally empowered agents and entails complex processes of contestation and concession-making. 相似文献
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Nora Broege Ann Owens † Anthony P. Graesch ‡ Jeanne E. Arnold ‡ Barbara Schneider 《Sociological methodology》2007,37(1):119-149
Two studies of working families are combined to demonstrate a strategy for producing reliable estimates from the combination of self-reported (large N) and observational (small N) data. Both studies examine where and how dual-career families spend time at home. The 500 Family Study is sociological and uses self-reported time diary data from a national sample; the CELF study is anthropological and uses observational scan sampling data from a regional sample of 32 families. The data are combined as if they constitute one sample, and an analytic solution for establishing the reliability of the resulting composite estimates of time use is provided. Merging the data sets provides validation for each study, neither of which is without potential methodological weaknesses. The advantages of combining data from the independent data collection methods are discussed, and selected substantive findings on families' activities are highlighted, illustrating similarities and differences between findings in the independent and combined data sets. Results show that working families spend significant time in a small spectrum of home spaces, particularly kitchens and living rooms, with leisure activities prevailing, but mothers, fathers, and children differ in where and how they spend their time. Overall, a template for merging data from different disciplines and methods is provided. 相似文献
18.
西方公民社会观适合中国吗? 总被引:10,自引:0,他引:10
20世纪90年代以来,公民社会逐渐成为学术研究热点。由于这一问题与当代中国社会政治变迁密切相关,因而引起国内外中国问题专家的广泛关注和讨论。尽管中国出现了社会分化、利益重组以及利益代表的重构,但是公民社会以独立于国家的自治和独立于传统结构如家族、单位或家庭的自治为前提,涉及公民结构及其思维模式的形成等诸多因素,其形成条件在中国才显露征兆,中国现在还没有产生公民社会。把西方语境中的公民社会观援引到中国,可能会出现根本不适用的情况。 相似文献
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Since the Software Engineering Institute has published the Capability Maturity Model in 1991, maturity models evolved into a commonly used instrument for assessing the state of a specific class of objects and for identifying improvement measures. As process improvement is a core task of business process management and takes top positions on CIO agendas, maturity models are prospering in this domain as well. However, it remains unclear which maturity levels should be aspired for distinct processes or process groups. Numerous companies strive for increasing or even maximizing maturity levels. Some maturity model specifications contain oppositional advice, but lack concrete recommendations. Even academia provides no answers. Against this background, we propose a mathematical optimization model that builds on insights from value-based management in order to analyze general economic relationships of process improvement with maturity models. The guiding effects of these relationships are illustrated using the example of ??CMMI for Services??. We conclude by discussing limitations and by pointing out theoretical as well as managerial implications. 相似文献