A simplified algorithm for the depot location problem

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.     

Allies and persecutors: science and medicine in the homosexuality issue

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.     

SYSTEMIC TREATMENT OF SUBSTANCE ABUSE: A GRADUATE COURSE

Today, family therapists should have an understanding of the development and maintenance of substance abusing patterns in families. In this paper, the authors describe a graduate course for teaching therapists about the contributions that have been made to the understanding and treatment of substance abuse by family researchers, theorists and clinicians. Course purpose, student selection, instructional methods and course content are delineated.     

Extreme-value analysis of canadian wind speeds

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.     

Perceived income adequacy and selected financial management practices among families in Chile and Mexico

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.