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Ch.7StockControlStockcontrolisthedeterminationandregulationofwhichitemsarekeptinstockandwhatquantitiesofeacharestockedwithoutstockexcessorstockdeficiencies.Theaim.ahighlevelofstock.stockholdingcosts.Therangeanddepthofstockholdingsisdeterminedbyanassessmentofthefollowingfactors.ThenatureofdemandDegreeofprotectionagainststock-outsPurchasingcostsHoldingcostsLead-time1.Stockclassification1.Stockclassification1.Stockclassification2.Stockidentification2.Stockidentification2.Stockidentification2.Stockidentification2.Stockidentification2.Stockidentification2.Stockidentification2.Stockidentification2.Stockidentification3.Forecast3.Forecast3.Forecast库存预测---(1)EOQ3.Forecast---(2)safetystock3.Forecast---(2)safetystock3.Forecast---(3)ROLUnderstandingInventoryCostStructureEOQ:AViewofInventory*EOQ:CalculatingTotalCost*EOQ:TotalCost*EOQ:OptimalOrderQuantity*经济订货批量(EOQ)模型EQQ(定量订货法Stationary)经济订货批量计算公式如下:2DSQ*=Ci式中:Q*——经济订货批量D——商品年需求量S——每次订货成本Ci——单位商品年保管费例:某仓库某种商品年需求量为16000箱,单位商品年保管费2元,每次订货成本为40元,求经济订货批量Q*。Q&A!