In this paper, we introduce a new multi-objective optimization problem derived from a real-world application: the package server location problem. A number of package servers are to be located at nodes of a network. Demand for these package servers is located at each node, and a subset of nodes are to be chosen to locate one or more package servers. Each client is statically associated to a pac...

Decentralized supply chain management is found to be significantly relevant in today’s competitive markets. Production and distribution planning is posed as an important optimization problem in supply chain networks. Here, we propose a multi-period decentralized supply chain network model with uncertainty. The imprecision related to uncertain parameters like demand and price of the final produc...

In this paper, a closed-loop location-inventory problem for spare parts is presented. The proposed supply chain network includes two echelons, namely (1) distribution centers (DCs) and repairing centers (RCs) and (2) operational bases. Multiple spare parts are distributed among operational bases from distribution centers in the forward supply chain and failed spare parts from operational bases ...

in this paper, a mathematical method is proposed to formulate a generalized ordering problem. this model is formed as a linear optimization model in which some variables are binary. the constraints of the problem have been analyzed with the emphasis on the assessment of their importance in the formulation. on the one hand, these constraints enforce conditions on an arbitrary subgraph and then g...

This paper addresses a multi-period investment problem for the selection, acquisition, and allocation of alternative technology choices to meet the demand of a number of product families over a long-range planning horizon. We first show that the problem is NP-hard. We then present a solution strategy based upon perturbing the linear programming relaxation solution of a multiperiod mixed-integer...

this paper deals with a multi-period fixed charge production-distribution problem associated with backorder and inventories. the objective is to determine the size of the shipments from each supplier and backorder and inventories at each period, so that the total cost incurred during the entire period towards production, transportation, backorder and inventories is minimised. a 0-1 mixed intege...

In recent years, supply chains seem to be moving more towards reconfiguring their networks become profitable. the times of COVID-19, where whole have been disrupted, suppliers are unable supply, and manufacturers manufacture because lockdowns in various regions around world. This pandemic can compared past earthquakes tsunamis, as coronavirus is also a natural disaster. Due these disruptions, o...