第三部分是投入产出模型的实证研究，投入产出模型又分为一般投入产出方法和结构分析方法，目的主要是分析产业结构关联度。
To analyze the correlativity of industry structure, the third part is the case study based on Input-Output model which includes common Input-Output method and structure analysis method.
产业经济学常用投入产出方法中的影响力系数和感应度系数来评价部门的拉动和推动作用，从而作为确定国民经济中关键部门最重要的参考指标。
The response coefficient and influence coefficient in input-output method are often used to appraise the tensile and impulse action of each sector and identify the key sectors in industrial economics.
在此提出了离散投入产出优化模型，给出求解该模型的方法和状态反馈形式的最优控制解。
An optimum model of discrete input-output is established in this paper. The method of solving the model and the optimal controls of state feedback are given.
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