Initiate and co-ordinate cost improvement projects to add value to the production function and to drive maximum performance.

发起和统筹成本改善项目，以增值生产函数，实现最大的利益。

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Project earned value management is the most effective co-ordinate control methods of cost and schedule by far, but our research on the earned value management is still very limited.

项目挣值管理是迄今为止最有成效的一种进度与费用协调控制方法，然而我国对挣值管理的研究还很有限。

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But the important means to achieve these two objectives at the same time is the Earned Value Method which is mean of project cost and schedule co-ordinate control.

而同时实现这两个目标的重要手段就是通过挣值法对工程项目费用与进度进行协调控制。

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