Several Kinds Of The Inventory Control Model And Its Applications

More and more enterprise's administrator pay attention on inventory control, which is the important process in enterprise's operating activities. Inventory policy manages various kinds of raw materials, semi-manufactured goods, finished product and other resources in the manufacturing industry and the service trade, to keep store on the rational level. The inventory, which smooth production process and meet customer's demand, has ensure enterprises operational process. But at the same time the stock brought the heavy cost to enterprise. How to reach satisfactory user's service level under the reasonable stock cost become one of the key questions in modern industrial and commercial management The thesis, which is on the basis of analyzing development of inventory policy, has studied the independent of definite inventory control model. For deteriorating, partial backlogging, time-varying demand and purchasing price, time-value of cost, two models and the corresponding control strategy are presented. An EOQ model of production while demanded with different backlogging rate during the shortage period is put forward under backlogging rate relevant to production. The total cost function is convex with respect to service level. An actual numerical example is presented to illustrate the model. This paper analyses the existence of the optimal solution, which is affected by production during shortage period. An application analysis of Chongqing JC Co. Ltd. is given here. An EOQ model is developed for deteriorating items with time-varying demand and purchase-price under stock dependent selling rate, based on comprehensively considering the effects on replenishment policy of inventory management at the condition of systematic deterioration and the phenomenon of stock dependent selling rate. The existence of optimal solution is discussed. A numerical example and sensitivity analysis are presented to illustrate the model. Base on EOQ model for deteriorating items with time-varying demand and purchase-price under stock dependent selling rate, an EOQ model is father extended by time-varying partial backlogging and time-value of system cost. The effect of the backlogging rate and time-value of cost on inventory policy is presented.