考虑订货商网络信息成本的VMI模型

A Vendor Managed Inventory Model with Buyer's NetworkInformation Cost

一般的供应商管理库存(VMI)模型只考虑传统渠道的订购成本、存贮成本、装配成本对供应商与订货商的影响,忽视了订货商的网络信息成本,与事实不符.把订购成本分为传统渠道成本和网络渠道信息成本两部分,建立了新的成本利润模型.分析表明:实施VMI后,供应商的成本上升、订货商的成本下降、供应链总库存水平下降、最佳库存水平也明显降低;订货商的采购价格是决定供应链利益分配的一个重要指标;实现供应商与订货商双赢的条件是O<w2-w1<(c3-c4)/Q,即网络信息成本对订购成本的节约必须由参与双方共同分享.

The VMI model generally considers the influences of traditional channel＇s order cost, storage cost and assemble cost to supplier and buyer and neglects buyer＇s network information cost. Obviously, this model is inconsistent with the facts. This paper divides order cost into the traditional channel＇s cost and the network channel＇s cost and establishes the new cost-profit model. The analysis indicates： after VMI is implemented, supplier＇s cost rises, buyer＇s cost drops ,supplies chain＇s total stock level drops and best stock level obviously reduces; buyer＇s purchase price is an important indicator to determine the benefits distribution of the supply chain ; the condition of mutual benefit between supplier and buyer is 0 〈 w2 - wI 〈 （c3 - c4） / Q , that is ,the save of order cost caused by the network channel＇s cost must be shared by the involved parties.