Seyed Hessameddin Zegordi

Learn More
The location-routing problem is one of the most important location problems for designing integrated logistics systems. In the last three decades, various types of objective function and constraints have been considered for this problem. However, time window constraints have received little attention, despite their numerous real-life applications. In this(More)
In this paper a Multi-criterion Decision Making (MCDM) model is introduced to tackle bottleneck machines and exceptional parts in manufacturing cell formation. In a given part-machine grouping scheme, bottleneck machines can be eliminated through machine duplication and exceptional parts may be removed by means of subcontracting. The developed(More)
He eu ur ri is st ti ic c a an nd d a a L Lo ow we er r B Bo ou un nd d f fo or r t th he e T Tw wo o-E Ec ch he el lo on n L Lo oc ca at ti io on n-R Ro ou ut ti in ng g P Pr ro ob bl le em m Keywords ABSTRACT During the last three decades, the integrated optimization approach to logistics systems has become one of the most important aspects of the supply(More)
In this paper, the need to incorporate three famous design cost management methods, called: Quality Function Deployment (QFD), Value Engineering (VE) and Target Costing (TC) into a single model has been addressed. Each method performs very well in cost management procedures as design activities. These methods have been incorporated into a mathematical(More)
This paper addresses the flexible job shop (FJS) problem with two types of flexibility in process planning. The problem is modeled as a mixed integer programming .The objective function is minimizing maximum absolute lateness. The model is proven to be Np-complete. To solve the model two versions of a heuristic approach based on tabu search is developed.(More)