This paper presents a multi-commodity network design approach to solve the problem of simultaneously locating I/O stations and determining the orientation o...

Although airlines plan aircraft routes and crew schedules in advance, perturbations occur everyday. As a result, flight schedules may become infeasible and ...

Electronic commerce is a natural evolution of traditional business. This evolution aims at e-Enterprise. The impact of this new concept on the functions of ...

Electronic commerce is a natural evolution of traditional business. This evolution aims at e-Enterprise. The impact of this new concept on the functions of ...

This paper exposes in voluntarily simple terms the concept of <i>S</i>-adapted equilibrium introduced to represent and compute economic equilibria on stocha...

Le commerce électronique est une évolution naturelle du commerce traditionnel. Cette évolution a pour finalité le e-Entreprise. L'impact de ce nouveau conce...

During the last decade, reverse logistics has been introduced into the manufacturing language. Companies' and public's awareness of environmental issues are...

Thrackleation of graphs and global optimization for quadratically constrained quadratic programming are used to find the octagon with unit diameter and larg...

Proposed just a few years ago, Variable Neighborhood Search (VNS) is a new metaheuristic for combinatorial and global optimization, based upon systematic ch...

This paper solves the problem of designing an access tree network for which the users are connected to the switches through SONET channels on fiber optics l...

Reduction of some classes of global optimization programs to bilinear programs may be done in various ways, and the choice of method clearly influences the ...

In the literature, thermal insulation systems with a fixed number of heat intercepts have been optimized with respect to intercept locations and temperature...

This paper addresses the problem whether a cooperative agreement, made at the start of a game, can be sustained over time. The players can reopen negotiatio...

The Esau-Williams algorithm is one of the best known heuristics for the Capacitated Minimum Spanning Tree Problem. This research note describes a simple en...

This paper describes and solves the operational pilot scheduling problem for one day of operations. The problem consists in simultaneously modifying, as nec...

On the basis of a variable-neighbourhood search with the AutoGraphiX software, it is conjectured that for even numbers of atoms the fully conjugated acycli...

<i>Location-Arc Routing Problems</i> (LARPs) are encountered in contexts where it is necessary to simultaneously determine a traversal of a subset of edges ...

A generalization of the Roy-Gallai theorem is presented: it is based on the existence in any oriented graph of a stable set S such that for any node <i>w</i...

Maximum Clique is one of the most studied NP-hard optimization problem on graphs because of its simplicity and its numerous applications. A basic Variable N...

An algorithm with a complexity linear in the number of vertices is proposed for the computation of the Hyper-Wiener index of chemical trees. This complexity...