Based upon the improved Input Output model of environment economy resources pollution control, the regional multiple objective optimization model of water environment economy is established.
基于改进的经济、环境、资源、污染治理投入产出模型，建立了区域水环境经济多目标优化规划模型。
Using the theory of multiple objective optimization, the paper sets up the model of optimal allocation for maintenance machinery; and presents the practicable methods and procedures for the model.
基于多目标优化理论，建立了养护机械优化配置模型，并给出一种求解方法——逐步宽容约束法。
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