The paper describes the application of multiobjective evolutionary algorithms in multicriteria optimization of operational production plans in a foundry, which produces iron castings and uses hand molding machines. A mathematical model that maximizes utilization of the bottleneck machines and minimizes backlogged production is presented. The model includes all the constraints resulting from the...

Abstract --In this paper, we developed an EOQ model for Weibull deteriorating items with linear demand rate in fuzzy environment. Shortages are allowed and partially backlogged. Holding cost, deterioration cost, ordering cost, shortage cost and opportunity cost are assumed as a triangular fuzzy numbers. The purpose of this paper is to minimize the total cost function in fuzzy environment. Grade...

We study distributed choice of retransmission probabilities in slotted Aloha under power di erentiation. We consider random transmission powers and further study the role of priorities (through power control) given either to new arriving packets or to backlogged ones. We study both the cooperative team problem in which a common objective is jointly optimized as well as the noncooperative game p...

An EOQ (Economic Order Quantity) model for a deteriorating item with quadratic demand pattern and quadratic holding cost and constant deterioration rate is considered in this paper. In addition, shortages and partial backlogging are allowed. It is assumed that the backlogging rate acts as not only a variable, but also depends on the length of the waiting time up to next replenishment during the...

<p style='text-indent:20px;'>This paper presents a mathematical framework to derive an inventory model for time, reliability, and advertisement dependent demand. This considers the demand rate is high initially, then reduces later stage, which reflects situation related cash in hand. The uncertain deterioration of product through Uniform, Triangular, Double Triangular probability distribu...

The present Paper deals with an inventory production policy for a ramp type deteriorating item over finite planning horizon constant demand, rate and shortages are not allowed. optimal number of cycles that minimizes the average system cost is determined. model permits shortage in each cycle, which completely backlogged within cycle itself. Every starts zero stock production. As continues, begi...

This paper proposes the optimal policies for a fuzzy inventory model considering holding cost and ordering as continuous functions of time. Shortages are allowed partially backlogged. The demand rate is assumed in such to be linearly dependent on time during on-hand inventory, while shortage period, it remains constant. problem formulated crisp environment. Considering rate, trapezoidal numbers...