In this paper, a cooperation model between a generating company and several marketers is presented. The model considers two cooperation schemes. The first finds the optimal decision for the generating company and the group of marketers in terms of maximization of their profits, based on bi-level...

In an inventory management model for perishables, depletion due to interacting with the demand is of importance, but also, damage to products is a relevant variable. This article considers that demand and sales phenomena do not always go hand-in-hand. The demand process relates to the...

The geographical conditions of Colombia limit connectivity among regions, making communication between different areas of the country difficult. Although Colombia has a major waterway system that could facilitate regional communication, much of the territory is functionally disjointed, which is...