On the basis of the classical mean-variance model, the article proposes the asset allocation model with value-at-risk constraint and transaction cost.

在经典均值-方差模型的基础上，提出了存在交易费用时基于风险价值约束的资产配置模型。

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And on basis of it, it puts forth the fixed cost allocation based on annual contract generation decomposition.

并在此基础上，论文提出了基于年度合同电量分解的固定本钱分摊方法。

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This paper presents a loss allocation strategy based on cost flow model. The loss is sorted on the basis of the cause of loss generated and distinct allocation methods are adopted.

提出基于费用流模型的损耗分摊策略，根据损耗产生的原因进行分类，并采用不同的分摊方法。

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