需求随机情形下时效性物品的随机存储策略

Stochastic inventory model about one sort of time-effective products in case of uncertain demand and constant supply

针对具有固定存储寿命、并且批量补充与批量随机需求情形下一类时效性产品的随机存储问题,应用排队论的思想和方法给出了其排队论模型.将状态概率方程组转化为可用数学软件求解的形式并给出了一般的算法,从而在货物需求强度已知的情况下可以得到近似最优的货物补充强度.最后给出实际算例,得到了三种情况下近似最优的货物补充强度.

Using the idea and method of queuing theory, the stochastic inventory model is established presented in form of state probability for one sort of time_effective products, in which the supply intensity is constant but to be determined, the demand intensity is known already, but the demanding amount is stochastic. By transforming the state probability equations into matrix equations, we get a general computing method, so the approximate optimal supply intensity can be computed when the demand intensity is known. At last, a practical example is studied and the approximate optimal supply intensity is got in three cases.