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排序方式: 共有187条查询结果,搜索用时 15 毫秒
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The 1990s were a decade of less flash and more cash for life's big and little necessities. Tracking the Consumer Expenditure Survey reveals how our shifting tastes and changing demographics are transforming the way we spend.  相似文献   
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We wanted to prospectively evaluate the use of a brief screening tool for ongoing intimate partner violence (IPV), the OVAT, and to validate this tool against the present Index of Spouse Abuse (ISA). The design was a prospective survey during randomized 4-hour shifts in an urban emergency department setting. The scale consists of four questions developed based on our previous work. The ISA was compared as the gold standard for detection of present (ongoing) IPV. Of 362 eligible patients presenting during 75 randomized 4-hour shifts, 306 (85%) completed the study. The prevalence of ongoing IPV using the OVAT was 31% (95% CI 26% to 36%). For the ISA, the prevalence was 20% (95% CI 16% to 25%). Compared with the ISA, the sensitivity of the OVAT in detecting ongoing IPV was 86%, specificity 83%, negative predictive value 96%, positive predictive value 56%, with an accuracy of 84%. In conclusion, four brief questions can detect ongoing IPV to aid in identifying the victim.  相似文献   
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In an effort to promote evidence-based practice, government officials, researchers, and program developers have developed lists of model programs in the prevention field. This article reviews the evidence used by seven best-practice lists to select five model prevention programs. The authors' examination of this research raises questions about the process used to identify and publicize programs as successful. They found limited evidence showing substantial impact on drug use behavior at posttest, with very few studies showing substantial impact at longer follow-ups. The authors advocate additional long-term follow-up studies and conclude by suggesting changes in the procedures for developing best-practice lists.  相似文献   
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The why, when, and how of immigration amnesties   总被引:2,自引:1,他引:1  
This paper deals with granting of an amnesty to illegal immigrants. We consider government behavior with respect to allocations on limiting infiltration (border control) and apprehending infiltrators (internal control) and with respect to the granting of amnesties, the timing of amnesties, and limitations on eligibility for those amnesties. We demonstrate the effects of government actions on allocations and the flow of immigrants, and how the interactions between these factors combine to yield an optimal amnesty policy. We also consider two extensions—intertemporal transfers of policing funds and “fuzziness” in declarations regarding eligibility for an amnesty aimed at apprehending and deporting undesirables.  相似文献   
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Christoph Weiss 《LABOUR》1998,12(3):451-471
Recent research in macroeconomics emphasises the importance of imperfect competition in the product market for labour market outcomes. We investigate one aspect of this issue by specifying a dynamic labour demand model where firms face different degrees of competition in the product market and test its predictions for 299 US manufacturing industries. We find that the long-run equilibrium level of industry employment as well as the speed of labour demand adjustment decreases with market power. Our results imply that imperfect competition in the product market explains part of the observed labour market rigidities and also sheds new light on two “stylized facts” in industrial organisation, the observation of procyclical movements in productivity and price–cost margins in concentrated industries.  相似文献   
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Although it is known that leaders can have a strong impact on whether employees voice work-related ideas or concerns, no research has investigated the impact of leader language on voice—particularly in professionally diverse contexts. Based on a social identity approach as well as on collectivistic leadership theories, we distinguish between implicit (i.e., First-Person Plural pronouns) and explicit (i.e., invitations and appreciations) inclusive leader language and test its effects on voice in multi-professional teams. We hypothesized that implicit inclusive leader language promotes voice especially among team members sharing the same professional group membership as the leader (in-group team members) while explicit inclusive leader language promotes voice especially among team members belonging to a different professional group (out-group team members). These hypotheses were tested in a field setting in which 126 health care professionals (i.e., nurses, resident and attending physicians), organized in 26 teams, managed medical emergencies. Behavioral coding and leader language analyses supported our hypotheses: Leaders' “WE”-references were more strongly related to residents' (in-group) and explicit invitations related more strongly to nurses' (out-group) voice behavior. We discuss how inclusive leader language promotes employee voice and explain why group membership functions as an important moderator in professionally diverse teams.  相似文献   
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