The increase of bandwidth demand for new Internet applications suggests mapping directly IP over the WDM layer. Since reliability is such a critical issue i...

The <i>p</i>-median problem is one of the basic models in discrete location theory. As with most location problems, it is classified as NP-hard, and so, heu...

We investigate the effects of a price cap regulation on the consumer’s surplus within the framework of two gas ownership structures. In the case of a firm o...

The paper examines shelf-space allocation and pricing decisions in the marketing channel as the results of a static game played à la Stackelberg between two...

In the last two decades, various studies developed static and dynamic game theory models to demonstrate that the efficiency of marketing channels can be rai...

We consider the problem of traffic grooming of low-rate traffic circuits in WDM rings where circuits are associated with a set of heterogeneous granularitie...

We consider a crew scheduling problem with preferential bidding in the airline industry. We propose a new methodology based on a graph coloring model and a ...

Column generation has proven to be efficient in solving the linear programming relaxation of large scale instances of the Multiple-Depot Vehicle Scheduling ...

Given the flight schedule of an airline, the fleet assignment problem consists of determining the aircraft type to assign to each flight leg in order to max...

The variable neighborhood search metaheuristic is applied to the primal simple plant location problem and to a reduced dual obtained by exploiting the compl...

Most examples of cycling in the simplex method are given without explanation of how they were constructed. An exception is Beale’s 1955 example built around...

An infinite-horizon differential game between a manufacturer and a retailer is con- sidered. The players control their marketing efforts and the sales share...

In this paper, a solution approach based on the column generation technique is pre- sented for solving a time-indexed formulation of the total weighted tard...

Estimation of the Pareto tail index from extreme order statistics is an important problem in many settings such as income distributions (for inequality meas...

We consider vehicle routing and crew scheduling problems that involve a lexico- graphic bi-level objective function (for instance, minimizing first the numb...

It is well known that each tree metric <i>M</i> has a unique realization as a tree, and that this realization minimizes the total length of the edges among ...

The Holt-Klee Condition states that there exist at least <i>d</i> vertex-disjoint strictly monotone paths from the source to the sink of a polytopal digraph ...

This paper examines the plant location problem under the objective of maximizing return-on-investment. However, in place of the standard assumption that all...

Column generation is one of the most successful approaches for solving large scale linear programming problems. However, degeneracy difficulties and long-ta...

Column generation has become a powerful tool in solving large scale integer programs. It is well known that most of the often reported compatibility issues ...