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971.
We compare mortality differences for specific and general categories of occupations using a national cohort of approximately 380,000 persons aged 25-64 from the U.S. National Longitudinal Mortality Study. Based on comparisons of relative risk obtained from Cox proportional-hazards model analyses, higher risk is observed in moving across the occupational spectrum from the technical, highly skilled occupations to less-skilled and generally more labor-intensive occupations. Mortality differences obtained for social status groups of specific occupations are almost completely accounted for by adjustments for income and education. Important differences are shown to exist for selected specific occupations beyond those accounted for by social status, income, and education. High-risk specific occupations include taxi drivers, cooks, longshoremen, and transportation operatives. Low-risk specific occupations include lawyers, natural scientists, teachers, farmers, and a variety of engineers. 相似文献
972.
Jography: Exploring Meanings,Experiences and Spatialities of Recreational Road-running 总被引:1,自引:0,他引:1
Jogging is a relatively under-researched mobile practice with much existing literature focusing on ‘serious’ and competitive running. In this paper, we provide an account of some of the movements, meanings and experiences that together help produce the practice of jogging in the south-western English city of Plymouth. Drawing upon participant diaries and interviews, we uncover rich detail about how joggers ascribe not one but a number of meanings to their practice. Some of these are positive, some are negative; some complement each other and some compete with each other. We also consider how the experiences of joggers can be shaped by their ongoing need to develop tactics capable of enabling them to negotiate space with non-joggers. This is in some contrast to more competitive running that occurs in the separated space of an athletics track. Our sense is that better awareness of the meanings and experiences of jogging will be of value if the advertised health and sustainability benefits of the practice are to be more effectively encouraged and promoted. 相似文献
973.
This paper is concerned with the determination of reorder points and safety-stock levels for situations where both the demand and lead-time distributions are discrete and independent. Formulas are developed for computing exact probabilities for the lead-time demand distribution on the basis of empirical distributions. Practitioners can use the model to obtain exact probabilities for situations where the computational burden is justified, while academicians can use the model to evaluate heuristic approaches to the reorder-point problem. 相似文献
974.
Paul Sieghart 《Development policy review : the journal of the Overseas Development Institute》1983,1(1):95-104
People Matter — Views on International Human Rights Policy. By Theo van Boven, collected and introduced by Hans Thoolen. Amsterdam: Meulenhoff, 1982. 186pp. Development, Human Rights and the Rule of Law: Report of a Conference held in The Hague, 27 April-1 May 1981, convened by the International Commission of Jurists. Oxford: Pergamon Press, 1982. 237pp. 相似文献
975.
This study investigates factors that may affect the use of decision support systems. The independent variables investigated included: characteristics of the decision makers such as age, educational level, experience, and cognitive style; characteristics of the decision support system such as response time, accuracy, timeliness, relevancy of output, format, and the distance traveled to interact with the system; and characteristics of the implementation process such as user involvement, user training, and top management support. The study included 8 systems and 64 subjects from the oil industry. The results indicated that the most important variables affecting decision support system usage were accuracy of output, user training, relevancy of output, and the decision maker's experience. Subject Areas: Decision Support Systems, Information Management, and Organizational Behavior. 相似文献
976.
Our reply to Curry, Louviere, and Augustine's critique of our earlier paper focuses on differences in motivation between our research and theirs. Our interest in the problem relates to the possible incorporation of self-explicated evaluations in conjoint data collection methods; subsequent to the appearance of our original paper, we have developed hybrid models that combine elements of self-explicated (compositional) and conjoint (decompositional) data collection procedures. As far as we can surmise from their critique, Curry, Louviere, and Augustine are concerned with much broader strategic issues relating share of choices in the consumer population to changes in the shape of attribute weight distributions, shape of the Pareto tradeoff boundary, and so on. 相似文献
977.
This article reports on a qualitative study that investigated how various risk factors associated with the process of sign-out reporting across shifts in critical care hospital environments could lead to flawed communication and thus to increased risk of poor patient outcomes. The study was performed in two critical care hospital units: the pediatric intensive care unit (PICU) and the postanesthesia care unit (PACU). We collected data from observations of eight nurses and four resident physicians in the PICU and four nurses and four resident physicians in the PACU giving sign-out reports during their shift changes. In addition, we conducted semi-structured interviews with a separate sample of medical providers consisting of nurse managers, attending physicians, nurses, and residents from each of these two units. The issues that were addressed in these interviews included how various methods of conducting sign-outs and factors such as personality and experience could impact the effectiveness of communication during sign-out reporting. We also collected data from these medical providers on how failures in communication during sign-out reporting could lead to potentially adverse patient outcomes. The article concludes with the presentation of a modeling framework that demonstrates how the combined influences of risk factors can generate a particularly important type of failure mode in communication and how interventions can be targeted to serve as barriers to such events. A number of recommendations intended for reducing risks associated with the communication of sign-out reports are also presented. 相似文献
978.
The spaces and ethics of organic food 总被引:2,自引:0,他引:2
Initial assessments of the potential for organic food systems have offered an optimistic interpretation of the progressive political and ethical characteristics involved. This positive gloss has prompted a stream of critique emphasising the need to explore the ambiguities and disconnections inherent therein. In this paper, we consider the case of Riverford Organic Vegetables,1 arguably the largest supplier of organic vegetables in the UK, and suggest that existing debates assume too much about the “goods” and “rights” of organic food and leave important questions about the spaces and ethics of organic food. We argue that, in the case of Riverford, the space of organic food production and distribution is neither the small, local, counter-cultural farm nor the large, transnational, corporate firm. Rather, simultaneously, the spaces of organic food production and distribution are the national network, the regional distribution system and the local farm. In addition, in the case of Riverford, the ethics of organic food exhibit few grand designs (of environmental sustainability, for example). Rather, the ethics of organic food are best characterised as: ordinary, since they relate to concerns about taste, value for money, care within the family and so on; diverse, since multiple practices steer the production and distribution of organic food; and graspable, in that both vegetables and box have material and symbolic presence for consumers. 相似文献
979.
Paul J. Draus Harvey A. Siegal Robert G. Carlson Russel S. Falck Jichuan Wang 《The Sociological quarterly》2005,46(1):165-189
This article describes the process of recruiting research subjects for a natural history study of illicit stimulant use in rural Ohio using respondent-driven sampling and ethnographic methods. Participant observation, qualitative interviews, and focus groups were used to establish the project and to evaluate and modify the sampling process as it unfolded. We outline the steps taken in several different rural counties, using ethnographic data to illustrate local differences and obstacles that were faced. The article concludes that respondent-driven sampling is a promising method for identifying and recruiting members of hidden populations in rural areas. However, adequate time must be allotted to establish ethnographic footholds and to reach various networks in separate communities. 相似文献
980.
This paper explores some of the issues associated with the nature of contemporary transnationalism and the particular experiences and strategies of a specific cohort of migrants, the 1.5 generation. Based on a study of East Asian migrant adolescents to New Zealand, we argue that the experiences and strategies of this generation differ from those of their parents, the original decision‐makers in the migration process, as well as from the historical experiences of earlier migrants. There is an ambivalence (in‐betweenness) about settlement and attachment that raises some key questions about the assumptions of the immigration literature and of policy/political communities. The paper suggests that the 1.5 generation represents a particular group that deserves more attention in the migration and transnationalism literature. 相似文献