The optimization model and application of long-term operation of reservoir group of hydropower station were established in according to the system engineering and the linear programming methods.

水电站水库群长期运行优化模型及其应用，是根据系统工程的思想，应用线性规划的方法建立起来的。

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Methods of building linear programming mathematical model for feed compounding and main procedure of realizing improveds simplex algorithm with computer are presented in this paper.

本文首先阐述了如何建立饲料配方的线性规划数学模型，以及用计算机实现改进单纯形算法的主要步骤。

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Linear programming is one of the most important methods in optimization.

线性规划是一种重要的最优化方法。

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