in this article, a finite horizon, multi product and multi period economic order quantity like seasonal items is considered where demand rate is deterministic and known but variable in each period. the order quantities of items come in batch sizes and the end of the period order quantity and, consequently, demand of customers are zero. in addition, storage space is constrained and the problem ...

We propose a new method for the study of the chiral properties of the ground state in QFT’s based on the computation of the probability distribution function of the chiral condensate. It can be applied directly in the chiral limit and therefore no mass extrapolations are needed. Furthermore this approach allows to write up equations relating the chiral condensate with quantities computable by s...

⎯This study addresses the problem of complete pre-ordered merchandise supply. We discuss the sale price and the supply period with the demand rate function of merchandise for customers and the ratio function of customers’ willingness to wait for taking merchandise, wherein the supply period and the sale price at any point of time during the complete stock-out period are decision variables. The ...

in this paper, an economic decisions-making model based on mathematics in order to optimize the costs of investment in accordance with innovative technology of human resources recruitment introduced and in the next section, the economic impact of the internet recruitment technologies has been examined.  in order to fulfill these demands classic economic order quantity model of have developed as...

Employing more than one supplier and splitting orders between them is a strategy employed in supply chains to lessen the lead-time risk in unstable environments. In this paper we present a multiple-sourcing inventory system with stochastic lead-times and constant demand controlled by a continuous review, reorder point-order quantity inventory policy. We consider the situation in which the order...