Routing buses for schools and similar services is one of the most visible application of Operations Research in improving services and reducing operating costs. In this paper a solution procedure for the multi-objective ...

and heuristic approach which takes advantage of Integer Linear Programming (ILP) techniques and heuristic search to improve the quality of the solutions. Extensive computational tests on the standard benchmark instances and on a new set of large sized...

In this paper, we give a modified Electromagnetic Meta-Heuristic search method (MEM) for finding a global minimum of a nonlinear function with continuous variables. The proposed scheme can be used either as a stand-alone approach...

is compared with other heuristics and the computational results show the effectiveness of our proposed method. The new algorithm can obtain better results than all other heuristics....

In this paper we propose a new heuristic algorithm to solve the unicost version of the well-known set

covering problem. The method is based on the electromagnetism metaheuristic approach which, after

generating a pool of solutions...

We develop an integer linear programming technique for solving two variants of the standard vehicle routing problem. Given an initial feasible solution to be possibly improved, the method follows a destruct-and-repair ...

This paper addresses the just-in-time (JIT) sequencing problem on a single machine with variable machining times and sequence-dependent setups. The objective is to find the best trade-off between the JIT goal and the ...

using a heterogeneous and capacitated fleet of vehicles. We model this situation as a generalization of the covering tour problem by introducing the idea of split delivery, and we propose a heuristic approach to solve it. Numerical experiments on random...

This paper deals with the resource-constrained project scheduling problem with flexible work profiles. In this problem, a project contains activities interrelated by finish-start-type precedence constraints with a time lag ...