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991.
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Frank G. Bowe 《Employment relations today》1988,15(2):107-111
994.
This paper describes a simplified optimization algorithm used for the solution of a classical depot location problem as presented in a Greek Manufacturing Company. Algorithms in the literature for this type of problem are based on the assumption of predetermined fixed costs which are independent of the final size of the depots. This assumption is usually far from reality; the size of each depot does not remain constant during the optimization process and so does the associated fixed cost which is variable with the size of the depot. This assumption is relaxed in the proposed algorithm; the associated fixed cost is modified each time a new customer is allocated to a depot thus changing the required depot size. 相似文献
995.
G Schmidt 《Journal of homosexuality》1984,10(3-4):127-140
Using Magnus Hirschfeld (1868-1935) and his Zwischenstufentheorie (theory of intersexual stages) as an example, the problems raised for homosexuals by etiological research into homosexuality are scrutinized. Hirschfeld, one of the most influential sex researchers working in the first part of the century, fully intended his biological theory to support his campaign on behalf of homosexuals' rights. However, the Zwischenstufentheorie and modern variations of it, such as the ideas of the endocrinologist, Günter D?rner, have been converted into strategies for preventing or curing homosexuality. From an historical point of view, it becomes clear that, in a society hostile to homosexuals, the results gained from research into the causes of homosexuality can be used against homosexuals and, in fact, have been. 相似文献
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997.
The impact of origin community characteristics on rural-urban out-migration in a developing country 总被引:4,自引:0,他引:4
Richard E. Bilsborrow Thomas M. McDevitt Sherrie Kossoudji Richard Fuller 《Demography》1987,24(2):191-210
It is widely believed that structural variables such as inequitable land distribution, lack of rural employment opportunities, and rural-urban wage and amenity gaps influence population movements in developing countries. Yet quantitative evidence is scant. In this paper a multilevel model is used to investigate the effects of individual-, household-, and areal-level factors on rural-urban out-migration in the Ecuadorian Sierra. Data from a detailed survey carried out in 1977-1978 and from government macro-areal statistics are used to investigate factors affecting the out-migration of youths aged 12-25. Preliminary conclusions are presented on the usefulness of multilevel models in studying migration and policy implications for Ecuador. 相似文献
998.
Estimates of extreme winds are essential for engineering design, but in preparing such estimates major statistical issues are encountered. In this case study, the analysts were provided with hourly readings on wind speed, wind direction, and barometric pressure at five Canadian stations for observation periods ranging over several recent decades. Their assignment was to calculate point and interval estimates of 10-, 20-, 50-, and 100-year return values (i.e., upper fractiles) for the wind speeds at these stations. 相似文献
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The purpose of this study was to explore the perceived adequacy of families' incomes and selected financial management practices (food budgetin debt, saving) in two Latin American countries. An interview survey was used to gather socioeconomic and demographic information from 537 families in Chile and Mexico. There were major differences between Chile and Mexico in the income adequacy responses and also major differences within countries between income levels. Implications of the findings for policy makers and curriculum planners who work in developing countries with inflationary conditions and income inadequacies are discussed. 相似文献