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71.
Adams TB Wharton CM Quilter L Hirsch T 《Journal of American college health : J of ACH》2008,56(6):657-663
Poor mental health is associated with physical illness, but this association is poorly characterized among college students. OBJECTIVE AND PARTICIPANTS: Using American College Health Association-National College Health Assessment data, the authors characterized poor mental health (depression, anxiety, negative affect) and examined the relationship between poor mental health and acute infectious illnesses (bronchitis, ear infection, sinusitis, strep throat) among 47,202 US college students. METHODS: The authors used frequency and cross-tabulation analyses to characterize mental health and determine univariate associations among variables. They used binary logistic regression to determine the association between poor mental health and acute infectious illness, controlling for research-derived covariates. RESULTS: The prevalence of acute infectious illness ranged from 8% to 29%. The prevalence of anxiety and depression ranged from 12% to 20%, respectively. Depression, anxiety, and exhaustion were associated with acute infectious illness across all dependent measures, with odds ratios ranging from .56 to .91. CONCLUSIONS: Poor mental health is associated with acute infectious illness among college students. 相似文献
72.
73.
We examine the effect of unions on the earnings of health care workers, with emphasis on the measurement and sources of union
wage premiums. Using data constructed from the 1973 though 1994 Current Population Surveys, standard union premium estimates
are found to be substantially lower among workers in health care than in other sectors of the economy, and to be smaller among
higher skill than among lower skill occupational groups. Longitudinal analysis of workers switching union status, which controls
for worker-specific skills, indicates a small impact of unions on earnings within both high and low skilled health care occupations.
Evidence is found for small, but significant, union threat effects in health care labor markets. It has been argued that recent
legal changes in bargaining unit determination should enhance union organizing and bargaining power. Although we cannot rule
this out, such effects are not readily apparent in our data.
The authors appreciate the assistance of David Macpherson, who helped develop the CPS data files used in the paper. 相似文献
74.
Health educators at the University of Massachusetts evaluated five posters to determine whether students comprehended, identified with, and were motivated by the messages, which dealt with aspects of safer sex, alcohol use, and stress management. Pretesting, they suggest, provides an opportunity for remedying design flaws before distributing materials, improving effectiveness, and saving money by assuring that the target audience receives the intended message. Six suggestions for improving effectiveness and acceptability of printed health education materials are offered. 相似文献
75.
76.
Eric L. Hirsch 《The Sociological quarterly》1986,27(3):373-387
This article examines the debate within resource mobilization theory concerning the motivation of participants in social movement organizations. Conclusions based on a case study of a Chicago community organization emphasize the importance of political solidarity in movement groups. An argument is made for a stage model of mobilization in which different types of incentives dominate motivation at different levels of involvement in the organization. 相似文献
77.
Michael J. Hirsch Daniel E. Schroeder Alvaro Maggiar Irina S. Dolinskaya 《Journal of Combinatorial Optimization》2014,28(1):38-57
Considerable research has been done on the vehicle routing problem and its variants; however only limited amount of existing work deals with possible environmental conditions and their effects on the vehicle routes. This paper presents the multiple-depot vehicle routing problem for surface vessels, where the vehicles must traverse a time-invariant direction-dependent medium. Our model captures environmental effects and vessel dynamics on the considered paths. Three heuristic solution methods are developed and tested on simulated scenarios. The first approach exactly solves an approximate formulation of the problem, the second approximately solves an approximate problem formulation, while the third approximately solves the exact problem. Performance of the algorithms are compared to assess the tradeoff between computational cost and quality of the found solutions. 相似文献