確定需求下的庫存管理培訓教材-文庫吧在線文庫
【正文】 Inventory Management Scientific inventory management ? Managers use scientific inventory management to improve their inventory policy for when and how much to replenish（ 補充 ） their inventory. 167。這種額外的防止送貨延遲的庫存叫做安全庫存 （ safety stock） 33 EOQ model ? Number of setups per year = ( annual demand rate) / (order quantity) =D/Q ? Average inventory level =(max. level + Min. level)/2 =(Q+0)/2=Q/2 ? TVC=annual setup cost + annual holding cost = k(D/Q)+h(Q/2) ACT Inventory Cost D Q K($) h ($) k (D/Q) ($) h (Q/2) ($) TVC ($) 6000 1000 115 690 2100 2790 6000 1500 115 460 3100 3560 6000 500 115 1380 1050 2430 準備成本 持有成本 年總成本 Summary ? With different Q, TVC is different. ? There exists optimal Q making TVC minimum. ? How to find the optimal Q? 167。 不能立即滿足客戶訂單的一種可能的結果是丟了這筆生意，或者降低客戶滿意度從而丟失未來的訂單等。 A Case Study The Atlantic Coast Tire Corp. (ACT) Problem 大西洋海岸輪胎公司（ ACT）問題 Background of ACT ? ACT is the distributor（分銷商） of Eversafe tires. When the inventory level of tires get low, ACT places a large order with Eversafe to replenish the inventory. Eversafe ships the tires to arrive nine working days after the placement of the order. ? The tires have been selling at a regular rate of about 500 per month. Manager’s policy has been to place an order with Eversafe for 1,000 tires as needed every couple months. The order is placed just in time to have the delivery arrive as the inventory runs out.(因此庫存用完之前的第九天就開始訂貨 ) Background of ACT Are you sure? ? Is 1,000 the optimal amount for the order quantity? IF high inventory level THEN low order
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