The objective of this model is to investigate the inventory system for perishable items with linear demand pattern where Weibull deterioration is considered. The Economic order quantity is determined for minimizing the average total cost per unit time. The unit production cost is taken to be inversely related to the demand rate. The result is illustrated with numerical example.

The identification of the types of bidirectional interactions that take place between longevity and economic growth in the long-run is carried out by means of the integration of human capital accumulation, innovation in medical technology, a health goods sector, and individual decisions on health and longevity in a dynamic general equilibrium set-up. In this context, in which individual agents ...

OBJECTIVES To analyse how economic downturns affect child mortality both globally and among subgroups of countries of variable income levels. DESIGN Retrospective observational study using economic data from the World Bank's Development Indicators and Global Development Finance (2013 edition). Child mortality data were sourced from the Institute for Health Metrics and Evaluation. SETTING Gl...

International Perspectives on Sexual and Reproductive Health 180 complications (0.4–0.5). •Loss of productivity. Only two characteristics were associated with the respondent or other household members having experienced reduced productivity (inability to work, to earn or both) because of the respondent’s abortion-related morbidity. The odds of productivity loss among women who had spent one or ...

Models of the interactions between population, economy, and environment often contain nonlinear functional relationships and variables that vary a t different speeds. These properties foster apparent unpredictabilities in system behavior. Using a simple deterministic model of demographic, economic and environmental interactions, we illustrate the usefulness of geometric singular perturbation th...

China has seen the fruit of its rapid economic growth over the past two decades, but severe environmental problems have accompanied this, such as the looming danger of Asian Brown Clouds. This paper analyzes the regional development of China by examining economic performance as well as environmental factors. Technical efficiency and productivity changes of thirty-one regions in China during the...

the term ‘deteriorated texture’ gives all experts as well as ordinary people almost the sameimpression. despite common points in images, the differences put iran cities in different categories based on deteriorated textures. this classification not only has negative effect on the audience from mental point of view but causes various problems for the experts in determining interference method. f...