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71.
This research note presents preliminary research into the relationship between the racial composition of public schools in school districts and the percentages of white students in nonpublic schools in those districts. Specifically, we ask two questions: Is the enrollment of whites in non‐public schools associated with minority predominance in public schools? Is there an association between the enrollment of whites outside of the public school system and the academic performance of students in the public school system? Using two‐ and three‐level hierarchical linear models, we find that school districts that have more whites in nonpublic schools tend to contain public schools with larger percentages of minority students. Further, at both the school and individual levels, achievement test scores tend to be lower in districts in which white students tend to be enrolled outside of the public school system. In addition, the achievement gap between white and minority students tends to be greater in districts with relatively more students in nonpublic schools. These findings are consistent with the argument that the withdrawal of white students from the public school system is negatively related to academic achievement because it tends to concentrate minority students in public schools. 相似文献
72.
Schoeneberger Marlies Logan T. K. Leukefeld Carl 《Population research and policy review》1999,18(1-2):119-136
The purpose of this study was to examine relationships between gender roles and HIV risk behavior, and perceptions and acceptance of the female condom among college students (n = 410). It was hypothesized that high hyperfeminine females and high hypermasculine males – those adhering to traditional gender roles – would engage in more HIV risk behaviors, including alcohol and drug use and various sexual practices, than those with lower hyperfemininity and hypermasculinity. It was also hypothesized that higher hyperfeminine females as well as higher hypermasculine males would perceive the female condom more negatively and would be less likely to view the female condom as a viable form of protection in the future. It was also hypothesized that high hyperfeminine females and high hypermasculine males would not accept the female condom as an alternative form of protection. Implications for prevention interventions are discussed. 相似文献
73.
Carl R. Adams 《决策科学》1975,6(2):337-345
The literature of management information systems suggests that substantial discord exists between management users and systems personnel. This paper describes the current attitudes of managers toward information systems and computers as reflected in seventy-five carefully structured interviews with managers from ten major companies. The author concludes that management user attitudes are quite favorable and do not reflect the predicted discord. In fact, the author believes that one of the major systems implementation problems of the future may be apathy rather than antipathy. The data collection was structured to indicate differences in attitudes on the part of users based on organizational level, functional area of work, type of activity, and type of environment. 相似文献
74.
75.
In this paper social pasts are considered to be foundations of everyday interpersonal life, including everyday situated action. We distinguish social pasts from culture by noting that the former involves recognition of specific joint acts and social placements while the latter involves recognition of ties to acts and placements in general. We further distinguish shared pasts–which refer to specific and previous joint acts or social placements that interactors constructed together–from common pasts–which refer to specific and previous joint acts or social placements that interactors constructed with others. We assess the importance of using either common or shared pasts in the course of completing and simplifying complex and everyday transactions so as to create an appearance of routine-ness in relation to constructing these acts. 相似文献
76.
‘Multiculturalism’ as an influential ideology for structuring ethnic relations has become exposed to increasing critique also in the Scandinavian context. The paper discusses a racialized political debate, legislation, and institutional practices, taking Denmark as the prime example. An increasingly ‘dual welfare’ is becoming legitimized through a hegemonic culturalized language, consistently interpreting ‘the right to be different’ as ‘being different’, and ‘being different’ as being ‘non‐integrated’. In a society where public debate on ethnic and racial discrimination is less than rudimentary, tolerant claims of multiculturalist relativism are effectively turned upside down in the service of neo‐racism, the preachings of which are imperceptibly becoming adopted as the conventional wisdom. This calls for a discussion on ‘politics of recognition’ which brings the debate on the universalism and particularity out of the abstract, while focusing on the vicissitudes of contemporary democracy in a changing welfare state. 相似文献
77.
Objectives. Our aim is to test the influence of business interest groups on Temporary Assistance to Needy Families (TANF) policy at the state level. Methods. We use the state TANF guarantee, the length of time recipients have before they lose their benefits, and the existence of a “family cap” as dependent variables in three models. Each of the models tests business interest group power and several other measures that represent possible influences on the dependent variable. Results. We find that business interest group power is significantly related to both the generosity of the TANF guarantee and to TANF time limits. However, it is not related to the presence of the family cap in state TANF policy. Conclusions. The evidence we found is consistent with the idea that those state TANF policies that are most intimately related to business interests are just those policies that are most affected by business group influence. States' TANF policies regarding maximum benefit and time limits both have a direct impact on wealth redistribution and labor‐market behavior. On the other hand, business interest groups do not seem to have much influence on the presence of TANF family caps, policies that are arguably less the concern of business interest groups, and more connected to public attitudes toward families and children. 相似文献
78.
We describe recent developments in the POPAN system for the analysis of mark-recapture data from Jolly-Seber type experiments. The previous versions (POPAN-3 for SUN/OS workstations and POPAN-PC for IBM-PC running DOS or Windows) included general statistics gathering and testing procedures, a wide range of analysis options for estimating population abundance, survival and birth parameters, and a general simulation capability. POPAN-4 adds a very general procedure for fitting constrained models based on a new unified theory for Jolly-Seber models. Users can impose constraints on capture, survival and birth rates over time and/or across attribute groups (e.g. sex or age groups) and can model these rates using covariate models involving auxiliary variables (e.g. sampling effort). 相似文献
79.
Fitting Weibull duration models with random effects 总被引:1,自引:0,他引:1
Duration time models often should include correlated failure times, due to clustered data. These random effects hierarchical models sometimes are called frailty models when used for survival analyses. The data analyzed here involve such correlations because patient level outcomes (the times until graft failure following kidney transplantation) are observed, but patients are clustered in different transplant centers. We describe fitting such models by combining two kinds of software, one for parametric survival regression models, and the other for doing Poisson regression in a hierarchical setting. The latter is implemented by using PRIMM (Poisson Regression and Interactive Multilevel Modeling) methods and software (Christiansen & Morris, 1994a). An illustrative example for profiling data is included withk=11 kidney transplant centers andN=412 patients. 相似文献
80.