Research On Economic Ordering Quantity Of Inventory Based On Fuzzy Parameter

This thesis makes research on economic ordering quantity of inventory with fuzzy parameters by the method of fuzzy structured element. It can make the solving process easier using the method of fuzzy structured element. It provides membership function expression about fuzzy economic ordering quantity when different parameters are fuzzy numbers. In the following conditions, such as, the example of OOS not allowed and short time or long time for supplement of t- circle strategy, the example of OOS not allowed of ( s, S) strategy, it gets the above expression. Meanwhile, this thesis provides a kind of decision-making method by the centroid of the membership function of fuzzy economic ordering quantity. Then it receives the principle of confirming concrete economic ordering quantity under the fuzzy economic ordering quantity. Finally, it gives the fuzzy centroid expression of economic ordering quantity under the example of OOS not allowed and short time for supplement of t-circle strategy.The method is applied to a medicine retailing company in the thesis. Then, the company can confirm the economic ordering quantity more exactly and more reasonably in the condition of selling quantity changing. The fuzzy decision-making method of economic ordering quantity in the thesis provides theory basis to other correlative companies, when they make reasonable economic ordering quantity decision facing the complex market environment.