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11.
Modern technology, together with an advanced economy, can provide a good or service in myriad ways, giving us choices on what to produce and how to produce it. To make those choices more intelligently, society needs to know not only the market price of each alternative, but the associated health and environmental consequences. A fair comparison requires evaluating the consequences across the whole "life cycle"--from the extraction of raw materials and processing to manufacture/construction, use, and end-of-life--of each alternative. Focusing on only one stage (e.g., manufacture) of the life cycle is often misleading. Unfortunately, analysts and researchers still have only rudimentary tools to quantify the materials and energy inputs and the resulting damage to health and the environment. Life cycle assessment (LCA) provides an overall framework for identifying and evaluating these implications. Since the 1960s, considerable progress has been made in developing methods for LCA, especially in characterizing, qualitatively and quantitatively, environmental discharges. However, few of these analyses have attempted to assess the quantitative impact on the environment and health of material inputs and environmental discharges Risk analysis and LCA are connected closely. While risk analysis has characterized and quantified the health risks of exposure to a toxicant, the policy implications have not been clear. Inferring that an occupational or public health exposure carries a nontrivial risk is only the first step in formulating a policy response. A broader framework, including LCA, is needed to see which response is likely to lower the risk without creating high risks elsewhere. Even more important, LCA has floundered at the stage of translating an inventory of environmental discharges into estimates of impact on health and the environment. Without the impact analysis, policymakers must revert to some simple rule, such as that all discharges, regardless of which chemical, which medium, and where they are discharged, are equally toxic. Thus, risk analysts should seek LCA guidance in translating a risk analysis into policy conclusions or even advice to those at risk. LCA needs the help of RA to go beyond simplistic assumptions about the implications of a discharge inventory. We demonstrate the need and rationale for LCA, present a brief history of LCA, present examples of the application of this tool, note the limitations of LCA models, and present several methods for incorporating risk assessment into LCA. However, we warn the reader not to expect too much. A comprehensive comparison of the health and environmental implications of alternatives is beyond the state of the art. LCA is currently not able to provide risk analysts with detailed information on the chemical form and location of the environmental discharges that would allow detailed estimation of the risks to individuals due to toxicants. For example, a challenge for risk analysts is to estimate health and other risks where the location and chemical speciation are not characterized precisely. Providing valuable information to decisionmakers requires advances in both LCA and risk analysis. These two disciplines should be closely linked, since each has much to contribute to the other.  相似文献   
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Children's self-attribution of social emotions was hypothesised (i) to be related to their second-order belief-understanding and (ii) to be more strongly related to social- conventional than moral rule violations. Thirty children aged between 4 and 7 years were presented with Sullivan, Zaitchik & Tager-Flusberg's (1994) second-order false belief task and with four hypothetical scenarios in which they were required to imagine that they had violated particular moral and social conventional rules. As predicted, the self-attribution of social emotions was significantly related to second-order belief understanding, primarily in social-conventional rather than moral contexts.  相似文献   
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To analyze bivariate time‐to‐event data from matched or naturally paired study designs, researchers frequently use a random effect called frailty to model the dependence between within‐pair response measurements. The authors propose a computational framework for fitting dependent bivariate time‐to‐event data that combines frailty distributions and accelerated life regression models. In this framework users can choose from several parametric options for frailties, as well as the conditional distributions for within‐pair responses. The authors illustrate the flexibility that their framework represents using paired data from a study of laser photocoagulation therapy for retinopathy in diabetic patients.  相似文献   
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This paper addresses the relationship between meaning attached to settings by social actors and their self-identities. In the context of research on the social worlds of old widows the author identifies “ideal type” self-designated identities, namely that of “resident” vs. “newcomer” in a setting. These self-identities are considered in light of the bearing upon them of the non-human or physical aspects of settings as well as of the people who share the settings. Finally, strategies for maintaining “resident” status are shown to be more limited for the old than for the younger members of society. I would like to thank Juanita B. Wood, Stephen G. Wieting, Ellen Horgan Biddle, Harold B. Freshley, and an anonymous reviewer forQualitative Sociology for their instructive comments on earlier drafts of this paper. This research was supported in part by a grant from the Administration on Aging, Department of Health, Education, and Welfare. Researchers undertaking such projects are encouraged to express freely their professional judgment. Therefore, points of view or opinions stated in this document do not necessarily represent the official position or policy of the Department of Health, Education, and Welfare.  相似文献   
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This study examined the extent to which lesbian, gay, and bisexual clients perceived their addiction counselors and treatment programs to be sensitive to issues related to sexual orientation. The experiences they considered most successful were reported as more affirmative than experiences they considered least successful; however, in neither situation were counselors or treatment programs consistently affirmative.  相似文献   
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Since “women and politics” scholarship emerged in the 1970s, social, institutional, and theoretical developments have shaped the trajectory of U.S. scholarship in this field. First, the presence of women in formal politics has increased, albeit unevenly across parties and minority groups over time. Simultaneously, the capacity to study “political women” has become supported through institutional mechanisms such as academic journals and communities of practice. Moreover, gender as a critical focus of analysis has been developed and refined. In the literature on women and politics, the shift from studying sex differences to interrogating gendered political institutions is especially salient. This institutional focus, along with recent intersectional studies of gender and politics, increases opportunities for cross‐pollination of sociological and political science perspectives. In this review, I provide a brief history of the U.S. scholarship on gender and politics and map these relevant social, institutional, and theoretical advances. I highlight the value of recent intersectional contributions in this field and make the case for bringing partisanship—an increasingly salient political identity and structure—into intersectional approaches to gender and politics.  相似文献   
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ABSTRACT

Reflexivity refers to the capacity for individuals to understand the cultural system and manage their own position within it. Reflexivity is a key concept in the understanding of intercultural communication, particularly in recognising the ability for individuals to understand and adapt to new cultural contexts. However, the prevailing methods used in intercultural communication (namely that of intercultural competencies) do not place a great emphasis on the role of reflexivity in achieving cultural adaptation. In this paper, I argue for the central positioning of the concept of reflexivity in intercultural education as a mechanism which mediates between intercultural experiences and individual behaviour. I present evidence of the reflexive sequence (subject-object-subject) from the reflections of a cohort of students (n = 19). Finally, I suggest a pedagogical instrument (a heuristic) for empirically exploring reflexivity in intercultural communication.  相似文献   
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