文档介绍：华中科技大学
硕士学位论文
变质物品库存决策模型研究
姓名:黄松
申请学位级别:硕士
专业:管理科学与工程
指导教师:黄卫来
20061025
摘要
随着当代先进制造技术的飞速进步和生产力的发展,顾客的消费水平不断提高,
企业之间的竞争的激烈程度也在不断地加剧,从而导致产品的生命周期不断缩短。
企业制造出的产品如果不能迅速地到达顾客手中,在存贮的过程中则可能由于变质、
破损,或更有竞争力的新产品的出现等原因,其价值将不断减少,给企业带来巨大
的经济损失。因此,研究具有变质性物品的库存决策问题具有重要的理论意义与现
实意义。
本文首先对国内外关于变质物品库存模型的相关研究进行了综述,然后从三个
方面对基本的变质物品的库存模型进行了拓展。首先将物品的变质率假定为任意时
刻库存水平和存贮时间的函数,在允许缺货,订货提前期为零,缺货量拖后率为时
变的条件下,建立了单个订货周期内变质物品的经济订货批量模型,并对模型的最
优解进行分析;其次,将单个订货周期拓展到多个订货周期,同时对物品的变质率
做了更为合理的假定,即假定变质率服从两参数的 Weibull 分布,在需求率为库存水
平的线性函数,有限计划时域内允许缺货且缺货量完全拖后,存货依赖性需求下的
最优经济订货批量模型,并对模型的最优解进行分析;最后,考虑允许购买费用滞
后支付对最优库存决策的影响,建立了变质物品在需求率为库存水平的线性函数,
计划时域内允许缺货且缺货量完全拖后,采购费用允许滞后支付,同时考虑资金的
时间价值时的最优库存决策模型,并对模型的最优解进行分析。
基于上述研究内容,本文的目的在于深入探讨变质物品的库存特性,为对变质
物品的库存进行有效的管理,增强企业的竞争力,提供理论上的依据。
关键词:库存变质物品变质率资金的时间价值滞后支付
I
Abstract
With the development of modern advanced manufacturing technology and
productivity, the consumption level of customers has increased constantly, which leads to
the lifecycle of products shortened. If the products produced e to the customers,
their values will continuously decrease because of deterioration, breakage or other more
competitive products’ disappearing, which will bring greater economic loss to the enterprise.
Therefore, it is very important to study the inventory problem for deteriorating items.
Firstly, the related literatures both at home and abroad about inventory models for
deteriorating items are reviewed. The extensions of the models are researched from three
aspects. Firstly, the deteriorating rate is assumed to be the function of current inventory
level at any time and storage time, under the assumptions that shortages are allowed with
zero lead time, and the backlogging rate is time-varying, an EOQ model for deteriorating
items is established, and the optimal solutions are also analyzed. Secondly, the single order
cycle is extended to multi order cycles, under the assumptions that the deteriorating rate
follows two par