最后，提出了基于需求预测的安全库存量确定方法和安全库存基于时间的优化方法。
Finally, the paper puts forward the method of determining the safety stock based on the demand prediction, and optimization method based on time.
最后，详尽地论述了供应链中的循环库存和安全库存，并讨论了在既不降低供给水平同时又不增加成本的基础上，如何降低循环库存和安全库存。
Finally I study the cycle stocks and the safe stocks of the supply chain in details, and discuss how to reduce them in the preconditions of not lowering the supply level and increasing cost.
本文描述如何设计和开发一种特定类型的安全性插件，这种安全性插件使用 DB2 数据库存储身份验证信息。
This article describes the design and development process of a specific type of security plug-in, one that uses a DB2 database to store authentication information.
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