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41.
For the problem of estimating a parameter θ when θ is known to lie in a closed, convex subset D of Rk, conditions are given under which estimators δ of θ cannot be Bayes estimators, as well as conditions under which δ is inadmissible. The estimators considered are so-called “boundary estimators”. Maximum-likelihood estimators in truncated parameter spaces are examples to which our results often apply. For the special case when k = 1 and D is compact, two classes of estimators dominating the inadmissible ones are constructed. Some examples are given. 相似文献
42.
Constance S. Bates 《Long Range Planning》1985,18(5):97-107
While most theorists and practitioners realize the importance of environmental analysis today, model-building emphasizes scanning and assessment. It is also important, however, to predict the future state of the environment. This prediction forms the basis for formulating a strategy which will maximize the firm's position in the future environment. This paper introduces a model which covers the important stages of environmental analysis: scanning, assessment and prediction. The model also includes a new classification system for external variables and an outline for analyzing these variables. It is an attempt to provide an operational guideline to be used by practitioners. 相似文献
43.
The results of a Monte Carlo study of the sensitivity of Rosenblatt density estimates to the scale factor are presented. 相似文献
44.
45.
Constance Field Stecher 《Social Studies》2013,104(8):434-440
46.
Social trust (i.e., belief that people are generally fair and trustworthy) is important to the functioning of democracies, and trend studies show it has declined. We test hypotheses concerning the development of these beliefs in adolescence. Based on surveys of 1,535 adolescents collected over 2 years, we find that middle and late adolescents had significantly lower levels of trust than early adolescents and that these beliefs became more stable and less related to interpersonal trust between early and late adolescence. Results of multiple group structural equation models revealed that, regardless of age, adolescents' reports that a strong sense of student solidarity characterized their school significantly increased social trust at T2, controlling for levels at T1, and opportunities to exchange perspectives with fellow students increased social trust at T2 indirectly, through feelings of student solidarity. The study points to the role of schools in nurturing the democratic dispositions of younger generations. 相似文献
47.
This paper reports on the development of a 'suitability for practice' policy in a large Canadian school of social work. Pertinent gatekeeping issues are reviewed and the results of a survey on suitability polices in Canadian social work schools are presented. The paper concludes with a discussion of the University of Calgary's Faculty of Social Work Suitability Policy. This policy integrates current research on gatekeeping, the results of the Canadian schools survey and input from primary stakeholders: the students, faculty members, the professional association and the community. 相似文献
48.
49.
Constance P. de Roche 《Revue canadienne de sociologie》2001,38(3):309-335
Bien que les Néo‐Ecossais n'aient pas encore été soumis au type de réformes d'aide sociale édictées dans d'autres provinces, certains programmes visant à promouvoir la participation de la main‐d'?uvre par les bénéficiaires de paiements de transfert gouvernementaux ont récemment été mis en place à l'île du Cap‐Breton, la région de la province la plus marginale sur le plan économique. Cet article étudie la structure de l'un de ces programmes, parrainé par le gouvernement fédéral. L'analyse présentée ici avance l'idée que, en dépit du discours public officiel, la conception du programme n'apporte que peu d'avantages à la collectivité locale et à ses citoyens le plus dans le besoin, mais véhicule des avantages idéologiques importants pour l'état. Même si le programme ne peut être appelé un programme de travail obligatoire, au sens strict de l'expression, il reflète la même idéologie néo‐libérale que celle qui a inspiré des réformes sociales plus draconiennes. Though Nova Scotians have not yet been subjected to the type of provincial welfare “reforms” enacted in other provinces, some programs aimed at promoting work‐force participation by recipients of government transfer payments have recently been introduced to Cape Breton, the province's most economically marginal region. This paper examines the structure of one such program, sponsored by the federal government. The analysis presented here suggests that, despite public rhetoric, the program's design delivers limited benefits to the local community and to its neediest citizens, but carries major ideological benefits for the state. While the program cannot be called workfare, in the strict sense of the term, it does reflect the same neo‐liberal ideology that has inspired more Draconian social reforms. 相似文献
50.
Constance A. Flanagan Taehan Kim Jessica Collura Michael A. Kopish 《Journal of research on adolescence》2015,25(2):295-309
In two studies of 5th–12th graders (n = 2,371; n = 999), we compare four groups based on engagement patterns in community service (CS) and/or extracurricular activities (EC). In both studies, adolescents who engaged in BOTH CS (whether mandated or voluntary) and EC had the highest reports of bonding and bridging social capital, intergenerational harmony, and social support whereas those who did NEITHER had the lowest. For most outcomes, adolescents engaged only in CS had higher reports than peers engaged only in EC. Content analyses of what adolescents learned in CS suggest its potential for broadening their awareness of fellow members of their communities, their mutual obligations, and collective capacities. 相似文献