Demographic aspects of abortion

The author discusses the need to emphasize the use of contraceptive methods in Poland, where women's desired family size is 2.0 to 2.2, and this number is realized by the age of 30-35. It is asserted that a higher cultural level, which includes a more sophisticated attitude toward sex, would eliminate the need to pass antiabortion legislation.     

Procreative attitudes of newly married couples

Results are presented from a 1985 survey conducted among newly married couples in Poland concerning ideal and planned number of children. Both husbands and wives participated in the survey. Comparisons are made with results from a previous survey undertaken in 1975.     

Fertility prospects in Poland

The three phases of the demographic transition in Poland are described with emphasis on changes in fertility. The author notes that the country had entered the third phase of low fertility by 1965. Despite a slight temporary increase due to pronatalist incentives, fertility has since remained low and will probably continue at this level or decline further.     

The problem of defining changes in demographic old age in Poland in a spatial context

The author analyzes the demographic characteristics of the elderly population in Poland. The focus is on the spatial distribution of the elderly around the country.     

Demographic transformation in Poland

The author presents a general review of the demographic transition in Poland from 1750 to the present day. Official data are used to describe the fluctuations in birth and death rates over this period.     

A gold key to initiate a new situation in family planning work]

Because of the popularization of a responsible agricultural production system, the livilihood of peasants has been improving greatly, while the demands and needs of the general public are also increasing at the same time. Still under the influence of the traditional belief of carrying on one's family line and emphasis on having male children, married people prefer to have more childre, and the birth rate is now rising again. In order to solve this new problem, we need to teach the peasants national policies on population, land utilization, and food supply. In order to initiate a new situation in family planning work, we need to control this "gold key" of ideological education and propaganda. The emphasis should be placed on ideological education for cadres at all levels as well as the general public in order that they may understand the Party's strategy. Education on the national strategy should be combined with material interests of the peasants, and reward and punishment in production should also be linked up with that of family planning. Social measures are needed to reduce economic burdens of the peasants, offer better treatment for single-child households, and provide adequate care for old and retired people. Family planning projects should be consolidated and improved. Scientific management, facilities and techniques for birth control, compensation for working personnel in family planning, and other practical problems deserve immediate attention and solution.     

An integrated production and inventory model for a whole manufacturing supply chain involving reverse logistics with finite horizon period

This paper proposes a model and solution method for coordinating integrated production and inventory cycles in a whole manufacturing supply chain involving reverse logistics for multiple items with finite horizon period. A whole manufacturing supply chain involving reverse logistic consists of tier-2 suppliers supplying raw materials to tier-1 suppliers, tier-1 suppliers producing parts, a manufacturer which manufactures and assembles parts from tier-1 suppliers into finished products, distributors distributing finished products to retailers, retailers selling products to end customers and a third party which collects the used finished products from end customers, dissembles collected products into parts, and feed the parts back to the supply chain. In this system, we consider a finite horizon period. A mathematical model for representing the behaviors of the system is developed. Solution methods based on decentralized and a combination of decentralized and centralized decision making process, referred to as the semi-centralized decision making process, are proposed to solve the model while the centralized decision making process is solved by a mixed integer nonlinear programming method. A numerical example is used to demonstrate the model and the solutions based on the three types of the coordination.