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141.
While the work of Donald Winnicott is well-known to clinical social workers, most are unaware of his rich professional collaboration with his second wife, Clare, a pioneering social worker analyzed by Melanie Klein who worked in child welfare, academia, government service, and psychoanalysis. This paper will review their work and lives together, outlining how their relationship expanded Donald's horizons in exploring the interface between psyche and environment.  相似文献   
142.
We consider nonparametric estimation of a regression function that is identified by requiring a specified quantile of the regression “error” conditional on an instrumental variable to be zero. The resulting estimating equation is a nonlinear integral equation of the first kind, which generates an ill‐posed inverse problem. The integral operator and distribution of the instrumental variable are unknown and must be estimated nonparametrically. We show that the estimator is mean‐square consistent, derive its rate of convergence in probability, and give conditions under which this rate is optimal in a minimax sense. The results of Monte Carlo experiments show that the estimator behaves well in finite samples.  相似文献   
143.
Contemporary feminist community organizing is not entirely consistent in practice. Drawing from current and historic examples, as well a feminist literature, this article examines tensions and contradictions between feminist ideas and praxis. The author suggests that contemporary feminist organizing ideas and practices adhere to masculinist models, and do not offer a liberatory and inclusive model for social change. Recommendations for a consistency between the public and private spheres, and processes and outcomes, are discussed.  相似文献   
144.
The mean and variance of a sum of a random number of random variables are well known when the number of summands is independent of each summand and when the summands are independent and identically distributed (iid), or when all summands are identical. In scientific and financial applications, the preceding conditions are often too restrictive. Here, we calculate the mean and variance of a sum of a random number of random summands when the mean and variance of each summand depend on the number of summands and when every pair of summands has the same correlation. This article shows that the variance increases with the correlation between summands and equals the variance in the iid or identical cases when the correlation is zero or one.  相似文献   
145.
The social bases of environmental concern in rural America resemble those for the nation as a whole, but also reflect the influence of place. Some general place characteristics, such as rates of population growth or resource‐industry employment, predict responses across a number of environmental issues. Other unique or distinctive aspects of local society and environment matter as well. We extend earlier work on both kinds of place effects, first by analyzing survey data from northeast Oregon. Results emphasize that “environmental concern” has several dimensions. Second, we contextualize the Oregon results using surveys from other regions. Analysis of an integrated dataset (up to 12,000 interviews in 38 U.S. counties) shows effects from respondent characteristics and political views, and from county rates of population growth and resource‐based employment. There also are significant place‐to‐place variations that are not explained by variables in the models. To understand some of these we return to the local scale. In northeast Oregon, residents describe how perceptions of fire danger from unmanaged forest lands shape their response to the word conservation. Their local interpretation contrasts with more general and urban connotations of this term, underlining the importance of place for understanding rural environmental concern.  相似文献   
146.
Survey research data collected in Rhode Island over a three year interval are used to test six propositions: 1) Suburbanites have higher family size than central city residents. 2) Any differences in family size between Catholics and non-Catholics are larger in central city than in suburban areas. 3) Within religious categories, suburbanites attend church more regularly. 4) Among Catholics, suburban residence is associated with less frequent Communion reception. 5) Among Catholics, church attendance frequency is positively associated with family size. Among non-Catholics no relationship exists. 6) The frequency with which Catholics receive Communion is more strongly associated positively with family size than is church attendance frequency. Propositions 1, 2 and 5 are rejected. Propositions 4 and 6 are accepted. Proposition 3 is accepted for non-Catholics only.  相似文献   
147.
148.
This paper examines the demographic situation in Mexico and Central America (Meso-America) and looks at the momentum for growth implied by recent population shifts. Despite successes in reducing fertility levels in many Meso-American countries, the dramatic declines in mortality among infants and children have given rise to a "death dearth" that is contributing to a new "baby boom" in these countries; thus our subtitle, "The Tip of the Iceberg."The impacts of such population growth on education, the economy and migration are considered in some detail. The anticipated inability of country economies to provide jobs for the thousands of young adults entering the labor force in future years could result in significant increases in the number seeking to migrate in a northerly direction. Thus, the United States is also vitally interested in the demographic shifts taking place south of its border.The need for a more unified regional approach to some of the social and economic problems facing these nations is pointed out as is the need for a more rational immigration policy on the part of the United States in light of the potential increase in immigration in future years.  相似文献   
149.
150.
The Inventory of Gambling Situations (IGS-63; Turner and Littman-Sharp, Inventory of gambling situations users guide, 2006) is a 63-item measure of high-risk gambling situations. It assesses gambling across 10 situational subscales that load onto two higher-order factors: negative and positive situations (Stewart et al. Psychology of Addictive Behaviors, 22:257–268, 2008). While the IGS-63 has excellent psychometric properties (Littman-Sharp et al., The Inventory of Gambling Situations: Reliability, factor structure, and validity (IGS Technical Manual), in press) its length may preclude its use in time-limited contexts. The purpose of this study was to develop and validate a 10-item short-form of the IGS (IGS-10). Each IGS-10 item reflects one of the ten subscale categories from the IGS-63, with two items from the original subscales included as examples for each IGS-10 item. The IGS-10 was administered to 180 undergraduate gamblers along with the IGS-63 and the Problem Gambling Severity Index (PGSI; Ferris and Wynne, Canadian Problem Gambling Index: Final report, 2001). IGS-10 items showed convergent validity with the corresponding IGS-63 subscales (r’s = .60–.73). Principal components analysis of the IGS-10 revealed two factors: negative (α = .84) and positive (α = .85). PGSI scores correlated significantly with all IGS-10 items (r’s = .33–.58) and with both IGS-10 higher-order subscales (r’s = .66 [negative] and .49 [positive]), supporting the criterion validity of the IGS-10. Since minimal information is lost when using the IGS-10, the short form may prove particularly useful when respondent burden prevents using the full IGS-63.  相似文献   
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