Rotating work schedules are encountered in several industries and public sector organizations where work is carried out 24 hours a day, seven days a week. ...

Global climate change issue raises two basic questions: What to do to guarantee the long-term efficiency (or the least collective cost) of international gre...

Let <i>G</i> be a graph and <i>d_v</i> the degree (= number of first neighbors) of its vertex <i>v</i>. The connectivity index of <i>G</i> is <img...

A variant of method of centers for convex optimization is considered. Given an upper bound on the objective function, the algorithm searches for an "approx...

We survey computers systems which help to obtain and sometimes provide automatically conjectures and refutations in algebraic graph theory.

This paper contains a new convergence analysis for the Lewis and Torczon GPS class of pattern search methods for linearly constrained optimization. The ana...

In this paper we illustrate a new methodology for the design of fault-tolerant logical topologies in wavelength-routed optical networks exploiting wavelengt...

In this paper, a fast and complete method to constructively enumerate fusenes and benzenoids is given. It is fast enough to construct several million non is...

A generalization of the Roy-Gallai theorem on the chromatic number of a graph is derived which is also an extension of several other results of Berge and of...

In this paper, the problem of optimally controlling production in a single part unreliable, manufacturing flow line, subjected to a constant rate of demand ...

We give characterizations of integral graphs in the family of complete split graphs and a few related families of graphs.

Variable neighborhood search (VNS) is a recent metaheuristic for solving combinatorial and global optimization problems whose basic idea is systematic chang...

This paper presents an analysis of the forward link capacity of a cellular network, based on IS-95 CDMA technology. The forward link, or downlink, refers to...

This article traces the evolution of ambulance location and relocation models proposed over the past thirty years. The models are classified in two main ca...

This paper introduces a new kind of operational crew scheduling problem which consists in simultaneously modifying, as necessary, the existing flight depart...

Eugène is a sophisticated mixed integer linear programming model developed to help regional decision makers on long-term planning for solid waste management...

La problématique du changement climatique implique des efforts globaux à long terme et la participation des pays en développement est requise pour assurer l...

This paper deals with dispatching systems in open-pit mines. It illustrates the different strategies that exist for solving the dispatching problem and ana...

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

The problem of estimating a binomial proportion constrained to lie in an interval of the form [<i>a,b</i>] "not equal to" [0,1] is considered. The minimax ...