Abstract This paper describes a maintenance scheduling model for digester banks. Digester banks are network-connected assets that lie on the critical path of Bayer process, chemical refinement process converts bauxite ore into alumina. The require different activities at due times. Furthermore, schedule is subject to production-related constraints and resource limitations. Given complexity larg...

The two-dimensional bin packing problem calls for a set of rectangular items into minimal larger bins. Items must be packed with their edges parallel to the borders bins, cannot rotated, and overlap among them. is interest because it models many real-world applications, including production, warehouse management, transportation. It is, unfortunately, very difficult, instances just 40 are unsolv...

In this paper, a comprehensive mathematical model for designing an electric power supply chain network via considering preventive maintenance under risk of network failures is proposed. The risk of capacity disruption of the distribution network is handled via using a two-stage stochastic programming as a framework for modeling the optimization problem. An applied method of planning for the net...

The hub location problem arises in a variety of domains such as transportation and telecommunication systems. In many real-world situations, hub facilities are subject to disruption. This paper deals with the multiple allocation hub location problem in the presence of facilities failure. To model the problem, a two-stage stochastic formulation is developed. In the proposed model, the number of ...

In this paper, a new model is proposed for the integrated logistics network designing problem. In many research papers in this area, it is assumed that there is only one option for the capacity of each facility in the network. However, this is not a realistic assumption because generally there may be many possible options for the capacity of the facility that is being established. Usually the c...

Managing income is a considerable dimension in supply chain management in current economic atmosphere. Real world situation makes it inevitable not to design or redesign supply chain. Redesign will take place as costs increase or new services for customers’ new demands should be provided. Pricing is an important fragment of Supply chain due to two reasons: first, represents revenue based ...

This paper proposes a simplified solution procedure to the model presented by Akinc and Roodman. The Benders’ decomposition procedure for analyzing this model has been developed, and its shortcomings have been highlighted. Here, the special nature of the problem is exploited which allowed us to develop a new algorithm through surrogating method. The two methods are compared by several numerical...

In this paper we propose improved Benders decomposition schemes for solving a remanufacturing supply chain design problem (RSCP). We introduce a set of valid inequalities in order to improve the quality of the lower bound and also to accelerate the convergence of the classical Benders algorithm. We also derive quasi Pareto-optimal cuts for improving convergence and propose a Benders decompositi...