Application of Industrial Water Use Efficiency Model in

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Application of Industrial Water Use Efficiency Model in the Riverside Cities based on Frontier

Application of Industrial Water Use Efficiency Model in the Riverside Cities based on Frontier 4. 1 Software Ming * Chen Ginling College, Nanjing Normal University, Nanjing, Jiangsu, China, Gulf Coast Research and Education Center, University of Florida, Wimauma, Florida, United States chen_ming [email protected] com Yunge Jiang Yinfan Li Ginling College, Nanjing Normal University, Nanjing, Jiangsu, China The water resources in the riverside cities are relatively abundant, but there are still contradictions between the industrial economy and water supply. Based on the stochastic frontier production function, this paper constructs a measurement model of industrial water use efficiency in the riverside cities. With the help of Frontier 4. 1 software, a typical riverside city Nanjing is selected for the application research of the model. The conclusions are as follows: (1) Based on the input-output principle, the industrial water use efficiency in the riverside cities can be measured by the input variables of industrial water consumption, the net value of fixed assets of industrial enterprises, the number of employees of industrial enterprises, and the output variables of industrial added value; (2) In Nanjing, a typical riverside city, the overall industrial water use efficiency showed an upward trend from 2000 to 2016, and its industrial economy and water supply operated in coordination. Stochastic frontier production function is a typical method to study efficiency, and its calculation basis is the deterministic production frontier, that is, to calculate the technical efficiency of DMU, and analyze the stochastic error term of response efficiency. This error term is composed of two parts, one of which is random error and the other is technical inefficiency The riverside city refers to the city that is built along the river. The river runs through the city and the natural conditions are relatively superior, which provides the necessary natural resources (mainly water resources) guarantee for the development of the city, especially the development of the industrial economy. Although the water resources are relatively abundant in the riverside cities, the proportion of high water consumption industries is also relatively high [1]. At the same time, rivers have become the main places for industrial wastewater discharge, which has seriously affected the quality of the water environment. Therefore, the contradiction between the industrial economy and water resources in the riverside cities is still prominent. It is necessary to improve the utilization efficiency of water resources, especially industrial water, so as to realize the optimizing allocation of water resources. calculation process can be realized by writing relevant calculation programs with the help of software Frontier 4. 1. The corresponding Frontier 4. 1 programming, running and result of the measurement of industrial water efficiency in Nanjing are shown in Figure 1, Figure 2 and Figure 3. Fig. 3. Frontier 4. 1 result. Fig. 2. Frontier 4. 1 running. Fig. 1. Frontier 4. 1 programming. This study first standardizes the industrial added value and industrial water consumption of Nanjing from 2000 to 2016, and then combines with the net value of fixed assets and the number of employees of industrial enterprises to plug into the model which is constructed above. Specifically, in the above SFA efficiency measurement model, the input variables are the industrial water consumption, the net value of fixed assets of industrial enterprises, and the number of employees of industrial enterprises, and the corresponding output variables are the industrial added value [8]. The Fig. 4. The trend of industrial water use efficiency in Nanjing (2000 -2016). Based on the input-output principle and battes-coelli (1995) model, the SFA efficiency measurement model of industrial water in riverside cities can be constructed by using the translog function. The input variables are: industrial water consumption, the net value of fixed assets of industrial enterprises, the number of employees of industrial enterprises, and the corresponding output variables are industrial added value. The specific application of this model must pass the maximum likelihood statistical test and the translog production function test, and the measurement result of efficiency value can be realized by Frontier 4. 1 software. In Nanjing, a typical riverside city, the overall industrial water use efficiency showed an upward trend from 2000 to 2016, and its industrial economy and water supply operated in coordination. It can be seen that Nanjing has taken effective measures to ensure the supply of industrial water resources, improve the efficiency of industrial water use, reduce the bearing pressure of water resources, and achieve sustainable development of the industrial economy.