Three dimensional stacking of containers

This paper reports the results of a simulation study into the stacking and handling of containers with the same dimensions. The measures of performance include volumetric utilisation, wasteful handling ratios, shortage ratio, and rejection ratio. The decision variables include the maximum dimensions of the store, stacking policies, and the different number of types of containers and their relative frequencies. The results indicate that the number of different types of containers has the largest impact on the measures of performance. The effects of the stacking policy and maximum store dimensions are also significant.     

Male sterilization as a contraceptive method in Canada an empirical study

Abstract In 1851-61, the crude birth rate in Canada was 45. In 1972, it was approximately 16. Not only have birth rates decreased but the average family size has declined from five or six children per family at the turn of the century to two or three children in the 1970'S. In addition, women are completing their childbearing at an earlier age. 50 years ago, it was not uncommon for a woman to have a child in her late thirties or early forties. To-day, this is a relatively rare event. In fact, it is estimated that approximately 80% of all families have the number of children desired before the woman is 30 years of age. This new demographic pattern creates an important and crucial situation for Canadian couples. At age 30, with all the desired children and 15 more years of potential childbearing ahead of them, what can they do to prevent the occurrence of additional pregnancies?     

A strategic model of communications demand

Strategic planning of telecommunications supply takes place in an increasingly turbulent environment due to factors such as the development of new and improved telecommunications services, the convergence of computing and telecommunications technologies and the emergence of the information society. This article is concerned with a model of future communications demand, developed under a research contract placed by British Telecom. The model describes dynamic trends in the supply and demand for communications products and services over a 30 year time horizon. Some key model features are outlined and an overview of the computer programme is given. The aim of the project was to provide decision-makers with a flexible, analytical tool for the exploration of policy issues and environmental impacts. The model should not be viewed as a forecasting tool but as an aid to structured thinking and the rapid assessment of alternative scenarios.     

Managing aging men in Asia: a strategic approach

We have established a comprehensive diagnostic paradigm for the management of aging men which seeks to evaluate the various determinants of the aging process in five major health areas: cardio-health, bone health, sex health, general health and endocrine state. This paradigm appears to be useful for the management of the problem of aging in our local population. It could be used for the management of individuals as well as for population research. When combined with the establishment of evidence-based management modalities, it will provide a useful tool for the holistic management of aging in Asia.