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121.
Abstract Many race-specific differences in health outcomes that have been observed in previous research have been attributed to class and racebased group differences which either facilitate or constrain health opportunities and behaviors. These include such variables as different rates of poverty, health insurance coverage, and access to medical care. However, these relationships have been inadequately examined in rural communities where minority status may be even more detrimental to health than in urban areas, due to various constraints on access to health care. We present an analysis that assesses the effects of community, family structure, sociodemographic, and medical care variables on self-reported health status among Hispanics, Mrican Americans, and non-Hispanic whites in six rural communities in Florida. Community structural characteristics had a significant effect on self-reported health, as did some of the measures of how respondents “experience” community. These relationships held even when other sets of variables were added to the models. Family/household characteristics and sociodemographic and medical care variables were less important in explaining self-reported health status. These findings suggest that community continues to be important in explaining differences in health status in rural areas. 相似文献
122.
Thomas K. Rudel 《Rural sociology》1998,63(4):533-552
Abstract Environmental social scientists have recently begun to use the term 'forest transition' to describe how forest cover changes as economic development occurs in nations. The hypothesized transition occurs as follows. An initial surge in economic activity in impoverished societies spurs deforestation, but as economic activity continues to intensify and cities grow larger, a 'turnaround' occurs, and deforestation gives way to reforestation. This paper uses cross-national data from five successive surveys of world forest resources to assess this empirical claim. A turnaround in forest cover trends does occur in a significant number of nations. The paper also evaluates two explanations for the turnaround, a wood scarcity hypothesis derived from microeconomic theory and an industrialization hypothesis linked to central place theory. It finds period specific support for the industrialization hypothesis. The paper concludes with a brief discussion of the implications of these findings for proposals to alleviate the biodiversity crisis through programs of reforestation. 相似文献
123.
Thomas K. Kenemore 《Child and Adolescent Social Work Journal》1998,15(4):249-249
124.
125.
Robert Aslett Robert J. Buck Steven G. Duvall Jerome Sacks & William J. Welch 《Journal of the Royal Statistical Society. Series C, Applied statistics》1998,47(1):31-48
In electrical engineering, circuit designs are now often optimized via circuit simulation computer models. Typically, many response variables characterize the circuit's performance. Each response is a function of many input variables, including factors that can be set in the engineering design and noise factors representing manufacturing conditions. We describe a modelling approach which is appropriate for the simulator's deterministic input–output relationships. Non-linearities and interactions are identified without explicit assumptions about the functional form. These models lead to predictors to guide the reduction of the ranges of the designable factors in a sequence of experiments. Ultimately, the predictors are used to optimize the engineering design. We also show how a visualization of the fitted relationships facilitates an understanding of the engineering trade-offs between responses. The example used to demonstrate these methods, the design of a buffer circuit, has multiple targets for the responses, representing different trade-offs between the key performance measures. 相似文献
126.
We draw upon evidence from a qualitative study of headhunters to provide insights into the character and importance of candidate fit and skill for the selection of a broad range of white-collar employees. Headhunters suggest that the fit of a job candidate is assessed at two levels, one corresponding with a general compatibility with organization-level norms, culture, and strategy, the other corresponding more closely with traits and characteristics of the person or persons with whom the job candidate actually interviews. Skill—a factor which is largely neglected by those who tout the importance of fit—also plays an important and independent role in employee selection. Stalls that influence the selection of employees from a pool of candidates tend to be highly specific if not idiosyncratic, and take the form of what headhunters call hot buttons. We conclude by discussing the conceptualization, causes, and implications of fit; we also consider how the importance of fit and hot buttons challenges the explanatory logic of standard accounts of labor-market success. 相似文献
127.
128.
The paradox of multiple elections 总被引:1,自引:0,他引:1
Assume that voters must choose between voting yes (Y) and voting no (N) on three propositions on a referendum. If the winning
combination is NYY on the first, second, and third propositions, respectively, the paradox of multiple elections is that NYY can receive the fewest votes of the 23 = 8 combinations. Several variants of this paradox are illustrated, and necessary and sufficient conditions for its occurrence,
related to the “incoherence” of support, are given.
The paradox is shown, via an isomorphism, to be a generalization of the well-known paradox of voting. One real-life example
of the paradox involving voting on propositions in California, in which not a single voter voted on the winning side of all
the propositions, is given. Several empirical examples of variants of the paradox that manifested themselves in federal elections
– one of which led to divided government – and legislative votes in the US House of Representatives, are also analyzed. Possible
normative implications of the paradox, such as allowing voters to vote directly for combinations using approval voting or
the Borda count, are discussed.
Received: 31 July 1996 / Accepted: 1 October 1996 相似文献
129.
Beyond the theoretical basis for integration, three core considerations stand out as the primary reasons for pursuing integration from a physician's perspective. In the authors' experience, the ability to make a case for physician integration stands or falls based on the ability of the integrated delivery system to address these considerations: Gain greater access to capital; develop human resources with talents in managed care and the full spectrum of care services; and sustain an information infrastructure. This article explores the lessons learned in pursuing physician integration. 相似文献
130.
Kirisci K 《International migration (Geneva, Switzerland)》1996,34(3):385-412
"While several studies (in both Turkish and English) have been made on migration to the Ottoman Empire from the Caucasus and the Balkans during the nineteenth century...very little systematic and comprehensive research on migration has been undertaken on the period since the establishment of the Turkish Republic. This article, which aims to partially fill the gap, is divided into three parts: the issue of national refugees (refugees of Turkish origin) in relation to Turkey's overall refugee policy; Turkey's policy towards national refugees; and the volume and causes of refugee migration to Turkey since 1945." (SUMMARY IN FRE AND SPA) 相似文献