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211.
"This article is about the process of socioeconomic transformation in rural Malawi. It examines the survival strategies and enterprising spirit of Malawian migrant workers and their households. It argues that the strategies of these people often went beyond survival in the provision of basic necessities.... In March 1988, the South African Chamber of Mines stopped a century-old tradition of recruiting migrant workers from Malawi. This has arrested and put to a halt a process of accumulation taking place in the households of the returned migrant workers in the rural economy. Thus, the effects of the retrenchment of the workers will spread from the migrant and his family through the economic and social wellspring of all sectors of rural communities and their commercial lives."  相似文献   
212.
"While a generalized utility maximization approach to migration decisionmaking is not innovative, the principal extensions of this paper involve the search for an instrument capable of measuring changes in utility levels consistent with all preferences (i.e., with all forms of utility functions), requiring only data on observed behaviour. Our approach is to construct a Location-Specific Utility Index (LSUI), whose component variables serve as proxies for the arguments in [U.S.] households' utility functions.... The testable hypothesis is formulated as follows: Assuming constant household preferences and expansion of the household's feasible set over time, the household's utility level is greater following the migration decision.... The results are compared with the households' migration decisions. The empirical evidence shows that migration may reasonably be modelled as a consumption activity by households to maximize utility." (SUMMARY IN FRE AND SPA)  相似文献   
213.
Theory and research have not kept pace with the growing interest in evaluating quality of mental health care, resulting in the use of unvalidated quality indicators. A framework for validating quality indicators is offered by which quality is viewed as the relationship between service structures, processes, and outcomes. Adoption of this framework will facilitate the measurement of quality using valid indicators and should be useful to agencies in their continuous quality improvement efforts. Valid information about the quality of mental health care services will help purchasers and consumers make more informed health care decisions.  相似文献   
214.
Little documentation exists regarding the functioning of formalized adolescent groups as drug abuse prevention agents. Two studies are described that were conducted at high schools whose students are at high risk for drug abuse. Twenty-one schools were randomly assigned to one of three conditions: (a) standard care, (b) classroom drug abuse education only, or (c) classroom plus school-as-community. Results of the first study indicated that the school-as-community component--which involved weekly meetings and periodic events at seven schools--was implemented as planned, drug abused focused, and perceived as productive in discouraging drug abuse. In the second study, staff in the classroom plus school-as-community condition self-reported involvement in the greatest number of community activities across the school year, compared with staff from the other two conditions. These two studies support the feasibility of formalized groups of high-risk youth to promote drug-free events.  相似文献   
215.
Software which allows interactive exploration of graphical displays is widely available. In addition there now exist sophisticated authoring tools which allow more general textual and graphical material to be presented in computer-based form. The role of an authoring tool in providing a graphical interface to a strategy for solving simple statistical problems in the context of teaching is discussed. This interface allows a variety of resources to be integrated. Specific examples, including the use of dynamic graphical displays in exploring data and in communicating the meaning of a model, are proposed. These ideas are illustrated by a problem involving the identification of the sex of a herring gull.  相似文献   
216.
A review of the way physician-assisted suicide (PAS) is being addressed in the United States reveals three models, each functioning out of distinctive concepts of autonomy: (1) litigation, which utilizes philosophical autonomy; (2) legislation, which utilizes political autonomy; and (3) act of conscience by a physician, which utilizes consumer autonomy. Each model raises a correspondingly distinct set of ethical questions and challenges centered around their point of reference-the judicial system, voters, or the doctor-patient relationship. In the end, however, efforts to resolve the challenge of PAS will falter if they do not go beyond these models of autonomy. Religious institutions offer a more constructive setting for facing the life and death decisionmaking of PAS. The challenge for religion is to address PAS in solidarity with sufferers, physicians, and the community, rather than retreating into iconoclastic dogmas.  相似文献   
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218.
"This study is based upon an international dataset comparing state support for families in fifteen countries (of which twelve are member states of the European Union).... Using multiple regression analysis, the levels of state support are explained by the principal parameters used for setting the levels of benefit, and by the demographic and economic characteristics of the countries concerned....[Results suggest] that the economic convergence of the member states is likely to promote greater similarity in their systems of state welfare support for families." (EXCERPT)  相似文献   
219.
The maximum likelihood estimation for the critical points of the failure rate and the mean residual life function are presented in the case of mixture inverse Gaussian model. Several important data sets are analyzed from this point of view. For each of the data sets, Bootstrapping is used to construct confidence intervals of the critical points.  相似文献   
220.
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