A comparative analysis on school attainment in Turkey and Malta: application of the Tobit model

This research provides a comparative analysis on the correlates of school attainment between Turkish and Maltese people. In the analysis, school attainment is measured by years of education. Tobit model estimates are obtained in the analyses using Eurobarometer 2004.1 data set. The results of the model demonstrate that, the effect of marriage on school attainment found to be insignificant for Malta while it is significant for Turkey. Additionally, it can be seen that females are less educated than males and income has a positive effect on school attainment in both Turkey and Malta. By providing comparative analyses, this research attempts to give insights for policy makers and professionals to improve the Turkish education system.     

Multi-item dynamic lot-sizing with delayed transportation policy

We optimize ordering and inbound shipment decisions for a manufacturer that sources multiple items from a single supplier. The objective is to satisfy the requirements in the production plan with minimum transportation and inventory holding costs over a multi-period planning horizon. Transportation costs are charged to the manufacturer on a per truck shipment basis. We investigate the option of delaying a less-than-full truckload shipment to the next period, by utilizing the safety stocks as needed. We analyze the impact of delaying shipments on both cost and service levels in stochastic environments through experiments with data from a bus manufacturer. The results indicate that the proposed policy reduces both holding and transportation costs without creating much stock-out risk.