A key recent theme in maritime freight transport is the involvement of shipping lines in terminal management. Such investments are costly but allow liners to provide better service. Most of these new terminals are dedicated terminals but some are non-exclusive and let rivals access them for a...

We present and study a mixed integer programing model that arises as a sub-structure in any industrial applications. This model provides a relaxation of various capacitated production planning problems, more general fixed charge network flow problems, and other structured mixed integer programs....

We present a branch-and-cut algorithm to solve the single commodity uncapacitated fixed charge network flow problem, which includes the Steiner tree problem, uncapacitated lot-sizing problems, and the fixed charge transportation problem as special cases. The cuts used are simple dicut...

This paper studies the impact of trade liberalization when monopolistically competitive and oligopolistic firms coexist in the same market. The model is characterized by a group of multi-product firms which behave strategically and take their impact on market aggregates into account (e.g. the...

We analyze whether and how the fact that products are not sold on free, public platforms but on competing for-profit platforms affects sellers? investment incentives. Investments in cost reduction, quality, or marketing measures are here the joint and coordinated efforts by sellers. We show...

A two-stage game is used in this paper to model a long-run market with spatially separated producers and with multi-period demands: first, firmas simultaneously and independently invest their capacities; second, after capacities are set up in the first stage and made public, firms engage in a...

We propose a model representing a newspaper producer suppying a product which can be acquired by the readers either every day per one unit at a time, or by subscription. The population of potentil buyers is differenciated according to the frequency at which they want to read the newspaper.

An oligopoly with spatially dispersed producers and consumers and with multi-period demands is modeled in this paper.

In this paper we consider a model of oligopolistic competition where firms make a two-dimensional product line decision. They choose a location in style space, thus, inducing horizontal differentiation, and produce different qualities (a product line) of a given good (vertical differentiation),...

Long-run oligopolistic expansion behavior in an electricity supply market is modeled in this paper.