Materials receiving capacity and inventory management

This paper analyses the optimal level of materials receiving capacity for a manufacturer that receives deliveries from many suppliers. Inventory levels and inventory carrying costs depend on the frequency of deliveries and thus, on the materials receiving capacity. An analytic model that captures the tradeoff between inventory costs and materials receiving costs is presented and discussed. The receiving cost is modeled as increasing in discrete jumps of varying sizes whenever materials receiving resources are added. Practical issues in implementing the model are highlighted and methods to reduce the marginal materials receiving cost are discussed. The paper also discusses connections to the JIT approach for production environments where materials receiving is heavily automated.     

The dynamics of contraceptive adoption in Bohol,Philippines: 1976-1978

A researcher analyzed 1976 and 1978 data on 414 rural women who had never used a family planning method to prevent pregnancy and lived in the predominantly Catholic island province of Bohol in the Philippines to look at the influence certain aspects of the family planning program, begun in 1976, as predictors of changes in contraceptive behavior. 34.5% accepted contraception between 1976-1978. The researchers learned that couple traits (e.g., age, income, education, and religiosity) had only an indirect effect on change in contraceptive behavior. A desire to stop, limit, or space births (motivation) was a strong predictor of family planning method acceptance (p.001). Further couples who clinic providers contacted the most often or who had received more family planning services (services) were much more likely to use contraceptives (p.001). Indeed a significant relationship existed between motivation and services (p.001). Moreover couples who were truly motivated to use family planning methods did not let distance to family planning services prevent them from seeking these services (p.001). On the other hand, couples who confronted personal obstacles to family planning including social, psychological, and other subjective costs (cost index) tended not to accept family planning methods (p.001). A negative association existed between services and location of households vis a vis the intervention program (p.001) which indicated that the program did have an effect in the area of the province where it was located. In conclusion, the strongest predictors of change in contraceptive behavior included motivation, services, and cost index. Services and cost index indicated the great importance of interpersonal and/or client staff contact, especially since they were more important in influencing behavior change than distance and family planning site.