In this paper an inventory model with several demand classes, prioritised according to importance, is analysed. We … consider a lot-for-lot or (S-1,S) inventory model with lost sales.For each demand class there is a critical stock level at and … below which demand from that class is not satisfied from stock on hand. In this way stock is retained to meet demand from …

analyze the effect on inventory performance of havingminimum order quantities for the different products in the joint order …

proposed method outperforms the Wagner-Whitin algorithm and the Silver-Meal heuristic, under several demand patterns, within a … knowledge about future demand as the ending inventory valuation method. Our results indicate that the superior performance … future demand is available, whereas the traditional methods do not use any information about demand beyond the short model …