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11.
OBJECTIVE: The authors' aim in this study was to determine, after adjustment for the effects of body mass index and sociodemographic measures, whether sex-specific weight control norms would have significant independent relationships with the weight control behavior of college women and men. PARTICIPANTS: The authors used an anonymous questionnaire to assess a sample of 470 college students, aged 18 to 26 years, attending either a 2- year community college or a 4-year public university. METHODS: To calculate body mass index, the authors objectively measured the height and weight of each participant. They conducted separate discriminant function analyses for women and men. RESULTS: The discriminant function analyses clearly indicated that weight control norms of same-sex, close friends were the best discriminators of involvement in weight control. CONCLUSIONS: The findings indicate that perceived peer norms may be important but overlooked risk factors for engaging in unhealthy weight control practices. The authors discuss the implications of these findings in the context of student health promotion.  相似文献   
12.
RS Stainton 《Omega》1978,6(4):363-366
Linear Programming (LP) is a valuable tool of operational research and has been applied successfully to problems of production scheduling, particularly in the process industries. It is dependent to a large degree on forecasts of demand for the products: when demand is erratic, production scheduling suffers, whatever the technique employed. LP is sometimes adopted, however, in situations which do not necessarily warrant its use. Such a case arose when considering the production difficulties of private label goods in the food industry. The problem was eventually modified with the full cooperation of management, despite initial opposition. The solution found was to adapt as a company to market conditions, instead of forcing the production function to operate within artificial constraints.  相似文献   
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Though collaboration is often required in community initiatives, little evidence documents relationships between collaboration and program success. The authors contend that clarification of the construct collaboration is necessary for investigating its contribution to the success of community initiatives. After respecifying collaboration, they present a study of a multisite program that involved varying degrees of collaboration in the 16 communities adopting a nurse home visitation program. The authors employ hierarchical linear modeling (HLM) to test the predictive power of individual participant characteristics and examine the increased accuracy of predictions from a second level model of site qualities-specifically, features of the collaborative process associated with different sites. The first-level model predicted approximately 10% of the variance in attrition, or dropout, of program clients. The second-level model accounted for an additional 28% of the variance in attrition. A theory of commitment transfer is offered as a first explanation of this result.  相似文献   
15.
RS Scorer 《Omega》1975,3(4):411-422
The idea is abroad that there is a technique, called the scientific method, which solves problems: this is a fallacy: and there is no certainty that solutions are even possible. Malthus's warning was correct and growth of population and consumption is now almost out of control. Evolutionary mechanisms have been stultified so that they no longer guarantee the creation of higher forms, and the variety on which it thrives has been destroyed. Planners plan as if they were planning the result of an election instead of merely the election itself. They do not understand freedom nor its value for a healthy society. Instead they have organised the proliferation of the illiterate and the unemployed.  相似文献   
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A vast and continually expanding literature on economic globalization continues to generate a miasma of conflicting viewpoints and alternative discourses. This article argues that any understanding of the global economy must be sensitive to four considerations: (a) conceptual categories and labels carry with them the discursive power to shape material processes; (b) multiple scales of analysis must be incorporated in recognition of the contemporary ‘relativization of scale’; (c) no single institutional or organizational locus of analysis should be privileged; and (d) extrapolations from specific case studies and instances must be treated with caution, but this should not preclude the option of discussing the global economy, and power relations within it, as a structural whole. This paper advocates a network methodology as a potential framework to incorporate these concerns. Such a methodology requires us to identify actors in networks, their ongoing relations and the structural outcomes of these relations. Networks thus become the foundational unit of analysis for our understanding of the global economy, rather than individuals, firms or nation states. In presenting this argument we critically examine two examples of network methodology that have been used to provide frameworks for analysing the global economy: global commodity chains and actor‐network theory. We suggest that while they fall short of fulfilling the promise of a network methodology in some respects, they do provide indications of the utility of such a methodology as a basis for understanding the global economy.  相似文献   
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