摘要
为通过定量化的方法研究不确定环境下模糊应急物资库存管理问题,结合应急物资的需求特性,以不确定环境下应急物资为研究对象,运用模糊、随机等理论和方法,建立在一定的库存服务水平下离散单周期、单物品的应急物资库存模型,得出需求随机、需求模糊随机、需求随机且成本模糊的应急物资库存模型最优订购策略表达式.由算例分析得出,应急物资的社会性和弱经济性对应急物资最优订购量的影响;增加对模糊集范围预测的准确性可降低不确定环境下最小损失期望值与确定性环境下最小损失期望值的偏差,有利于应急物资库存管理活动的开展.
To study the management of fuzzy inventory for emergency supplies under uncertain environment through quantitative methods, considering the characteristics of emergency supplies, fuzzy theory and stochastic theory are used to establish the single-period inventory models of emergency supplies at a certain inventory service level combined with the demand characteristics of emergency supplies. The optimal order policy expression of inventory model with random demand, model with random fuzzy demand, and model with random demand and fuzzy cost are concluded. Numerical examples reveal the impact of the sociability of emergency supplies and the weak economy of the emergency supplies on the optimal order quantities. Increasing the forecast accuracy of fuzzy set not only reduces the deviation of the minimum expected loss under both uncertain and certain environment , but also benefits the management activities of emergency supplies.
出处
《上海海事大学学报》
北大核心
2010年第1期33-38,共6页
Journal of Shanghai Maritime University
基金
上海海事大学研究生创新基金资助项目(YC2008004)
关键词
应急物资
单周期库存模型
模糊理论
emergency supply
single-period inventory model
fuzzy theory
