The operation practice of the engineering project show good control and economicperformanceindex are achieved and significant economic benefit is achieved.
工程项目运行实践表明，该系统取得优越的控制性能和经济性能指标，取得了显著的经济效益。
2
Optimal regulation rules and minimum economic loss for economic systems with quadric performanceindex as well as a simple example are given.
对于二次型性能指标的经济系统给出了最优调节规律和最小的经济损耗。
3
Even though the U. s. economic data has mixed performance, the dollar is benefited from the Euro falling, the dollar index has back to the 75 points.