Huang [ Journal of Statistics and Management Systems, Vol. 6 (2003), No. 2, pp. 171-180 ] studied the EOQ (Economic Order Quantity) and EPQ (Economic Production Quantity) models with backlogging and defective items using the algebraic approach. He assumed 100% inspection policy and the known proportion of defective items was removed prior to storage or use after the screening process. In this p...

This paper investigates the relationship between fluctuations in economic growth, unemployment, and voting along a left–right axis. I estimate a model that explains how political fluctuations are caused by economic fluctuations in the OECD countries. I find that higher economic growth causes a shift to the left of policy sentiments. I hold the provision of social insurance by the welfare state ...

We study large scale extended trust region subproblems (eTRS) i.e., the minimization of a general quadratic function subject to a norm constraint, known as the trust region subproblem (TRS) but with an additional linear inequality constraint. It is well known that strong duality holds for the TRS and that there are efficient algorithms for solving large scale TRS problems. It is also known that...

our country, iran is one of the countries in the world population it has become a social problem. iran's population growth despite decreased rate in recent years is still relatively high and due to the young population, there is also the possibility of increased population growth in the coming years. this study aimed to assess the reproductive status of working women (in education and training ...

Migration and quality of redistribution of population across country is one of the main factors that planners take into account to control population and guide its movements to economic poles. Scientific recognition of migration phenomenon is important for managing and policy making in the country. These movements change migration pattern, in a way that along with increase in population and the...

This paper argues that income inequality has increased in several, but not all, developed countries over the last twenty years. The increase in some countries supports the conclusion that the deregulation of markets, resulting in the concentration of economic power, is the fundamental cause as well as the gross manifestation of inequality of both income and wealth. JEL classifi cation: D30 (Gen...

Inequality grew substantially not only in many developed countries during the 1980s and 1990s, but also in most developing countries. The growth in inequality was particularly severe in Latin America and Africa, but significantly less in many East Asian countries. The diverse patterns of income inequality motivate my research, which reveals the important forces underlying the dynamics of inequa...