We introduce the Stochastic multistage fixed charge transportation problem in which a producer has to ship an uncertain load to a customer within a deadline. At each time period, a fixed transportation price can be paid to buy a transportation capacity. If the transportation capacity is used, the supplier also pays an uncertain unit transportation price. A unit inventory cost is charged for the...

This paper proposes a numerical model for describing charge accumulation in electron-beam irradiated low density polyethylene. The model is bipolar, and based on a previous model dedicated to space charge accumulation in solid dielectrics under electrical stress. It encompasses the generation of positive and negative charges due to the electron beam and their transport in the insulation. A sens...

Introducing the unique characteristics of the international marine transport industry, this paper examines whether load capacity is excessive or insufficient in the presence of uncertainty on the future economic situation in terms of both welfare of one country and global welfare. We also consider the effect of alliances and the application of antitrust immunity on capacity building of shipping...

This paper is about improving the performance of genetic algorithm (GA) to solve fixed-charge transportation problem (FCTP). Several approaches have been developed, based on adaptation and improvement operators. We propose a new adopting an immigration strategy maintain diversity in population then overcome stagnation values objective function. Thereby, we applied two types immigration, random ...