The analytic model of business process assignment optimization is presented to undertake the trade-off among resource, time, cost constraints and decision nodes in multi-project environment.

建立了折衷考虑资源、时间和成本约束，以及决策节点的多项目环境下的经营过程配置优化解析模型。

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A method is proposed to solve time-cost trade-off model for activity networks by using the minimum cost flow principle.

提出了利用最小费用流原理求解时间-费用优化模型的方法。

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Weighted value of safety quality cost time in most cases must be regarded for trade-off optimization, but it is difficult to be determined for its uncertainties.

工程施工中安全、质量、费用及工期的综合优化，在许多情况下需要涉及权重的确定，但权重值常很难精确确定，具有不确定性。

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