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Charles W. Griffiths Chris Dockins Nicole Owens Nathalie B. Simon Daniel A. Axelrad 《Risk analysis》2002,22(4):679-688
To quantify the health benefits of environmental policies, economists generally require estimates of the reduced probability of illness or death. For policies that reduce exposure to carcinogenic substances, these estimates traditionally have been obtained through the linear extrapolation of experimental dose-response data to low-exposure scenarios as described in the U.S. Environmental Protection Agency's Guidelines for Carcinogen Risk Assessment (1986). In response to evolving scientific knowledge, EPA proposed revisions to the guidelines in 1996. Under the proposed revisions, dose-response relationships would not be estimated for carcinogens thought to exhibit nonlinear modes of action. Such a change in cancer-risk assessment methods and outputs will likely have serious consequences for how benefit-cost analyses of policies aimed at reducing cancer risks are conducted. Any tendency for reduced quantification of effects in environmental risk assessments, such as those contemplated in the revisions to EPA's cancer-risk assessment guidelines, impedes the ability of economic analysts to respond to increasing calls for benefit-cost analysis. This article examines the implications for benefit-cost analysis of carcinogenic exposures of the proposed changes to the 1986 Guidelines and proposes an approach for bounding dose-response relationships when no biologically based models are available. In spite of the more limited quantitative information provided in a carcinogen risk assessment under the proposed revisions to the guidelines, we argue that reasonable bounds on dose-response relationships can be estimated for low-level exposures to nonlinear carcinogens. This approach yields estimates of reduced illness for use in a benefit-cost analysis while incorporating evidence of nonlinearities in the dose-response relationship. As an illustration, the bounding approach is applied to the case of chloroform exposure. 相似文献
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Chris Dockins Robin R Jenkins Nicole Owens Nathalie B Simon Lanelle Bembenek Wiggins 《Risk analysis》2002,22(2):335-346
This article explores two problems analysts face in determining how to estimate values for children's health and safety risk reductions. The first addresses the question: Do willingness‐to‐pay estimates for health risk changes differ across children and adults and, if so, how? To answer this question, the article first examines the potential effects of age and risk preferences on willingness to pay. A summary of the literature reporting empirical evidence of differences between willingness to pay for adult health and safety risk reductions and willingness to pay for health and safety risk reductions in children is also provided. The second dimension of the problem is a more fundamental issue: Whose perspective is relevant when valuing children's health effects—society's, children's, adults‐as‐children, or parents'? Each perspective is considered, followed ultimately by the conclusion that adopting a parental perspective through an intrahousehold allocation model seems closest to meeting the needs of the estimation problem at hand. A policy example in which the choice of perspective affects the outcome of a regulatory benefit‐cost analysis rounds out the article and emphasizes the importance of perspective. 相似文献
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The revised accreditation standards for marriage and family therapy programs (Manual on Accreditation, 1988) require that the curriculum reflect an emphasis on “issues of gender and ethnicity as they relate to marital and family therapy” (p. 13). Training approaches that are described in the professional literature tend to emphasize an understanding of ethnic minorities while deemphasizing the trainee's own ethnic and cultural roots. As such, training lacks dynamic integrity for the white, middle-class trainee. This paper describes a rationale for addressing the ethnic and cultural background of all family therapy trainees and provides training activities to accomplish this end. 相似文献
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Research on the functional independence of verbal operants (Skinner, 1957) has demonstrated inconsistent findings. One explanation may be that these studies have not manipulated the motivating operation (MO) to facilitate the emergence of mands (Hall & Sundberg, 1987; Lamarre & Holland, 1985). In the current study, 1 participant, diagnosed with autism, was taught to tact high-preference and low-preference leisure items, and emergence of mands was tested under varying MO conditions. Results showed the emergence of mands following periods of arranged deprivation, and greater maintenance for a highly preferred relative to a less preferred stimulus. However, mands only emerged when presession tact trials were conducted. These results suggest that in a state of deprivation, transfer of stimulus control from discriminative to motivational conditions may occur without direct training. 相似文献
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Janine Klemmt 《Gruppendynamik und Organisationsberatung》2018,49(1):93-96
For the ?news‘ section of the journal ?Gruppe, Interaktion, Organisation (GIO)‘, Janine Klemmt inducts into the functioning of US conference formats, which have long-since spread to European conference landscape. Among them there are formats like BarCamp or the predecessor Open-Space-Technology. These formats increasingly rely on the active participation and involvement of their attendees. Occasionally, the conference content is completely locally determined by the attendees. These participatory conferences have a decentralized structure, which is similar to the way social media works, but cannot be explained by an imitation of contemporary social media formats. Rather by means of decentralization online and conference platforms have a common organizational component, a common denominator, which, especially with cybernetics, has moved into the field of science, has been taken up in societal areas such as technology and business, and thus increasingly found its way into the everyday world. 相似文献
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The article explores the way in which professionals who are exposed to people's testimonies of suffering manage to integrate compassion into their work. Research has shown how compassion is a problematic emotion for such professionals, and has identified the forms of reflexivity that they employ to handle the tensions that such feelings arouse. By examining legal work — in particular the practices of lawyers in a criminal trial where a large number of victims are present — the article makes a new contribution to the study of compassion in the workplace. It identifies the normative repertoire which lawyers use to construct an appropriate attitude towards victims and analyses how, within the framework of strategic reflexivity, lawyers mobilise this repertoire to suit the particular interests they are representing at the trial. 相似文献
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Alastair Owens 《Social history》2013,38(3):299-317
Drawing upon detailed research of inheritance practices in early nineteenth-century Stockport, this article examines how married men attempted to provide for their families after their death. It is argued that inheritance acted as an informal family welfare mechanism through which specific gender relations associated with middle-class households were reproduced. The evidence presented suggests that married male testators often used inheritance to try and 'fix' their wives into widowhood. Widows were frequently required to act as custodians of family property and maintain the domestic order. Access to property was carefully controlled and various legal devices were used to give authority to the process and ensure that the estate was used by widows to care and provide for children in certain, carefully stipulated ways. In making these claims, the article argues that recent revisionist studies that have attempted to highlight the proprietorial autonomy of middle-class women in industrializing communities ignore the forces at work which constrained the free use of property by women at certain stages in the life course. The findings of the study are also used to highlight the ways in which middle-class men's uses of property were materially and ideologically 'constrained'. 相似文献
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Nora Broege Ann Owens † Anthony P. Graesch ‡ Jeanne E. Arnold ‡ Barbara Schneider 《Sociological methodology》2007,37(1):119-149
Two studies of working families are combined to demonstrate a strategy for producing reliable estimates from the combination of self-reported (large N) and observational (small N) data. Both studies examine where and how dual-career families spend time at home. The 500 Family Study is sociological and uses self-reported time diary data from a national sample; the CELF study is anthropological and uses observational scan sampling data from a regional sample of 32 families. The data are combined as if they constitute one sample, and an analytic solution for establishing the reliability of the resulting composite estimates of time use is provided. Merging the data sets provides validation for each study, neither of which is without potential methodological weaknesses. The advantages of combining data from the independent data collection methods are discussed, and selected substantive findings on families' activities are highlighted, illustrating similarities and differences between findings in the independent and combined data sets. Results show that working families spend significant time in a small spectrum of home spaces, particularly kitchens and living rooms, with leisure activities prevailing, but mothers, fathers, and children differ in where and how they spend their time. Overall, a template for merging data from different disciplines and methods is provided. 相似文献
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