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81.
Akin J Guilkey D Popkin B Flieger W Briscoe J Black RE Adair LS 《Journal of development economics》1992,38(2):323-351
Collaborating researchers used a multi equation model to analyze 3080 mother-infant pairs living on the island of Cebu in the central Philippines and to estimate a child health production function. The econometric methods used eliminated obstacles such as heterogeneity and endogeneity of significant explanatory factors. They also maximized the longitudinal quality of the data. The results showed that morbidity in 1 period reduced infant weight in following periods. For example, diarrhea and febrile respiratory infection reduced growth in the time period following the illnesses. Further effects of some contributing factors were great near birth not diminished with age. For example, breast feeding promoted growth and protected against infection, especially diarrhea and febrile respiratory infection, more substantially near birth than it did later. Further, in urban areas, preventive health care positively affected growth independently of its indirect influence on reducing respiratory infection. Yet it had little effect on diarrhea. Diarrhea had a strong adverse effect on growth. Exposure of the infant to enteric pathogens had the greatest influence on production of diarrhea. In urban areas, exposure included water supply contamination, exposure to feces, a more pathogenic diet, and community crowding. In rural areas, however, exposure included community crowding and increased rainfall which presumably washed feces into the water supply. Household crowding in both urban and rural areas and irritation from smoke in urban areas only tended to bring about febrile respiratory infection. 相似文献
82.
Robertson LQ 《Hospital materiel management quarterly》1991,12(3):17-21
The 1990s will be a decade of increasing dramatic and traumatic change for hospitals. Reimbursement, technology, and consumers, either alone or in concert, will be the forces that will shape hospitals in the future. At the end of the 1990s we will have hospitals that offer technology to the critically ill, outpatient surgical services, and comforting care for those in the late years of life. Material management will be important to hospitals because expense control will be as important as ever. However, I believe the role of a material manager will diminish as the services provided change and as the role is folded into the responsibilities of those who manage one of the three critical business areas hospitals will be in. This new hybrid of today's manager will still apply all of the concepts to the distribution of supplies in a hospital as today's material managers do but will use them as only a part of their overall management responsibility. 相似文献
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86.
Robert L. Kahn 《人力资源管理》1984,23(1):5-22
Present patterns of productive activity are neither well recognized, optimal for society, nor in accordance with individual prefence. Although a great deal of attention has been given to meeting people's needs for income, medical care, and other services, the quality of their lives must also be defined by what they do for themselves and for others. In discovering present patterns of productive activity throughout the life course and optimizing those patterns, we will raise the quality of American life. To accomplish this task, two great changes are needed: we must recognize the full range of productive activities throughout the life course and give people the opportunity to modify the allocation of paid employment. 相似文献
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Christopher L. Gilbert 《Journal of econometrics》1977,5(2):221-239
By consideration of either Generalised Least-Squares of Theil-Goldberger estimates of equations for which data on the dependent variable is available for a subset of the sample period on only an annual basis, it is shown that best estimates of the equation coefficients may be obtained by Ordinary Least-Squares estimation over the complete set of quarterly observations with quarterly averages substituted for the missing quarterly data, and symmetrically for the corresponding observations on the regressor variables. The approach is extended to the Two-Stage Least-Squares case, and to the (structurally or stochastically) autoregressive case. 相似文献
89.
L.D. McClements 《Journal of public economics》1979,12(2):233-242
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