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41.
Discussions of birth rates in less developed countries (LDC’s) are almost always couched in terms of income per-capita or per-consumer-equivalent. A decrease in population growth rate is said to lead to a higher per-capita income (PCI) than would occur with a higher birth rate, and therefore a lower birth rate is advocated. This runs the danger of choosing a course of action that people really do not want. A static analysis of a PCI criterion leads to an optimum which is quite unacceptable. One can raise the PCI of any given group by getting rid of all small sub-groups that have a lower PCI. Static analysis is not directly relevant to those problems of LDC’s, because the relevant control variable is the birth rate. This paper explores some of the ramifications of different birth rates. The general conclusion is that per-capita income alone cannot be a satisfactory criterion for a rational national natality policy. At best it can be but one factor to be taken into consideration in such a policy decision.  相似文献   
42.
We study interdependent risks in security, and shed light on the economic and policy implications of increasing security interdependence in presence of reactive attackers. We investigate the impact of potential public policy arrangements on the security of a group of interdependent organizations, namely, airports. Focusing on security expenditures and costs to society, as assessed by a social planner, to individual airports and to attackers, we first develop a game-theoretic framework, and derive explicit Nash equilibrium and socially optimal solutions in the airports network. We then conduct numerical experiments mirroring real-world cyber scenarios, to assess how a change in interdependence impact the airports' security expenditures, the overall expected costs to society, and the fairness of security financing. Our study provides insights on the economic and policy implications for the United States, Europe, and Asia.  相似文献   
43.
Many of the tasks encountered in image processing can be considered as problems in statistical inference. In particular, they fit naturally into a subjectivist Bayesis framework. In this paper, we describe the Bayesian approach to image analysis. Numerical examples are not included but references are given. It is argued that the Bayesian approach, still in its infancy, has considerable potential for future development.  相似文献   
44.
This paper reviews basic components of the initial screening interview for applicants to treatment programs for pathological gamblers. The therapeutic potential of the interview is seen as primary and the collection of information follows an initial period of unstructured exploration of feelings. Specific information needed in making an admission decision is reviewed including items related to the gambling addiction, to family, employment, health, co-addiction, attitude, and demographics. Some items of information required by the client are reviewed. Criteria for acceptance or rejection are mentioned throughout. The rationale for various items of policy is reviewed briefly in a number of situations.  相似文献   
45.
Knowledge work as organizational behavior   总被引:2,自引:0,他引:2  
Knowledge work has been defined as a profession, a characteristic of individuals, and as an individual activity. We review and critique these definitions of knowledge work and propose that knowledge work is best understood as discretionary behavior in organizations. As such, knowledge work is understood to comprise the creation of knowledge, the application of knowledge, the transmission of knowledge, and the acquisition of knowledge. Each of these activities is seen as a discretionary behavior. Employees are likely to engage in knowledge work to the extent that they have the (a) ability, (b) motivation, and (c) opportunity to do so. The task of managing knowledge work is focused on establishing these conditions. Organizational characteristics such as transformational leadership, job design, social interaction and organizational culture are identified as potential predictors of ability, motivation and opportunity. Implications for further research and practice are identified.  相似文献   
46.
Abstract

The design of its distribution logistics has a decisive influence on a company’s logistical costs and performance. They therefore make an essential contribution to corporate success. This article describes a method for analysing the potential of distribution logistics in terms of logistical costs and performance. In contrast to previous procedures of business process re-engineering, this method maps distribution logistics holistically under variable distribution structures. The article is focused on the approach and results of a case study in a multinational manufacturer of propulsion and automation technologies for machine construction and systems engineering. The developed method is distinguished by a high degree of practicality and applicability. It will contribute to a more efficient design of distribution logistics.  相似文献   
47.
Abstract

Objective: To develop and validate a scale measuring health beliefs about UV in cloudy climates that may impact UV exposure behaviors. Participants: Students at a large university in Oregon completed pilot (N?=?115) and final (N?=?335) scales online March–July, 2016. Five participants underwent cognitive interviews. Methods: Expert feedback, cognitive interviews, and pilot data guided item development and refinement. We conducted factor analysis and invariance testing. Results: The final four-factor model fit well (χ2?=?37.97, df?=?37, RMSEA?=?0.000, CFI?=?1.000). HBAU subscales are Sunscreen Toxicity, Seasonal Effects, Health Benefits of Tanning, and Tanning Through the Winter. Invariance testing supported strong invariance across sex and tanning status. Conclusion: The HBAU measures beliefs that encourage UV exposure and discourage protection (eg, the belief that sunscreen ingredients are toxic). This scale will enable more comprehensive measurement of cognitive predictors of UV exposure for student health, clinical, and research purposes.  相似文献   
48.
49.
Lesbian, gay, bisexual, transgender, and queer (LGBTQ) people have become a familiar presence on the media landscape. For more than half a century, scholars have examined the importance of this recognition. In this article, I extend the work of British sociologist Ken Plummer to argue that key narratives have endured in discussions of LGBTQ media. These narratives include the victim, the community, the militant/queer, and the assimilationist. In addition, this paper points toward new directions for analysis and discussion; I argue that future research should take a more nuanced approach by examining overlaps and tensions among these stories.  相似文献   
50.
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