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In this paper social interaction is modeled as a consumer good. A model of household production is employed to derive the demand for social interaction. The model shows that the demand for social interaction is a function of its price, the price of other goods and income. The theory is tested with data from the General Social Survey and the results show that social interaction can be explained as the consequence of utility maximizing behavior by individuals. These results are in contrast to social capital theorists who have attributed these changes to factors such as increased community heterogeneity. 相似文献
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亨利·伯恩斯坦 《中国农业大学学报(社会科学版)》2008,25(1):40-51
文章认为,在现代全球化商品生产环境下,构建生产和再生产的社会关系从普遍意义上讲就是阶级关系,提出应重回阶级视角审视和分析农村贫困及其产生原因。在这一视角下对现代农地变迁进行探讨,并在提出当代农耕变化七个命题的基础上,识别了不同阶层关系下的动力机制和不同发展政策议题下隐含的阶级动力,并指出,现有关于改善农业生产、农村生计和福利的政策忽略了阶级不平等性,因此它们也忽略了贫困的根本社会基础以及不同干预对此带来的重要影响。 相似文献
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The present paper deals with the Galbraithian theory of the managerial firm. Galbraith has stressed corporate size and has questioned the effectiveness of the market demand, technology and capital market constraints, which in conventional theory restrict the size of the firm.Galbraith represents the objectives of the corporation in terms of a conventional lexicographic objective function with some minimal level of profits (in terms of cash flow) being ranked the dominant objective. Also in his treatment of the corporate constraints, Galbraith does not move much beyond the current state of knowledge. The assumption of consumer sovereignty has long been relegated to the text-book literature, and the firm's control over the quality of its product (its price elasticity) has been generally recognized. Similarly, it has been known that the capital market is not perfect so that it is unlikely to constrain the expansion of the firm with some given investor determined earning constraint. In his attempt to show the technostructure's ability to plan the rate and the direction of the technological development Galbraith did not, however, meet with wide support from empirical research and analysis. It is extremely difficult to test the firm's control over its production technology, and while the few industry studies available can hardly be used to reject the Galbraithian position, there is not sufficient evidence to support a generalization of Galbraith's conjecture.While individually these constraints have been analyzed and discussed in the literature, Galbraith has combined these results and has been able to show that in the industrial state the qualitative laws of economic common sense do not hold. The importance of this conclusion is not only academic. Efforts to control corporate allocations through rate controls, antitrust litigation, and in other ways emanate from the conventional theory of firms and markets and do not fit the industrial state. In this state corporate size does matter and cannot be treated as random: The larger the corporation the more perfect the control it assumes over its environment and the higher the efficiency with which it plans its over-all operations.We acknowledge the helpful comments of a referee of this journal. 相似文献
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Henry Chung MD Michael C. Klein PhD Daniel Silverman MD MPA Janet Corson-Rikert MD Eleanor Davidson MD Patricia Ellis NP 《Journal of American college health : J of ACH》2013,61(7):628-639
Abstract Objective: To implement a pilot quality improvement project for depression identification and treatment in college health. Participants: Eight college health center teams composed primarily of primary care and counseling service directors and clinicians. Methods: Chronic (Collaborative) Care Model (CCM) used with standardized screening to identify, treat, and track depressed students for 12 weeks to monitor predetermined process and clinical outcomes. Results: Of all students receiving primary medical care services between January 2007 and May 2008, 69% (n = 71,908) were screened for depression. A total of 801 depressed students were treated and tracked; most predetermined treatment process and clinical outcome targets were achieved. Conclusion: The CCM for depression shows promise for improving depression identification and care for college students. 相似文献
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Michael Greenberg Paul Lioy Birnur Ozbas Nancy Mantell Sastry Isukapalli Michael Lahr Tayfur Altiok Joseph Bober Clifton Lacy Karen Lowrie Henry Mayer Jennifer Rovito 《Risk analysis》2013,33(11):1969-1986
We built three simulation models that can assist rail transit planners and operators to evaluate high and low probability rail‐centered hazard events that could lead to serious consequences for rail‐centered networks and their surrounding regions. Our key objective is to provide these models to users who, through planning with these models, can prevent events or more effectively react to them. The first of the three models is an industrial systems simulation tool that closely replicates rail passenger traffic flows between New York Penn Station and Trenton, New Jersey. Second, we built and used a line source plume model to trace chemical plumes released by a slow‐moving freight train that could impact rail passengers, as well as people in surrounding areas. Third, we crafted an economic simulation model that estimates the regional economic consequences of a variety of rail‐related hazard events through the year 2020. Each model can work independently of the others. However, used together they help provide a coherent story about what could happen and set the stage for planning that should make rail‐centered transport systems more resistant and resilient to hazard events. We highlight the limitations and opportunities presented by using these models individually or in sequence. 相似文献