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Fei L.,Xi'an University of Technology | Wang G.,Shaanxi Province Institute of Water Resources and Electrical Power Investigation and Design | Sun J.,Xi'an University of Technology | Sun J.,China Coal Technology and Engineering Co. | And 2 more authors.
Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering | Year: 2014

In order to decide if the weight of an index for comprehensive evaluating operation perfor-mance of irrigation district is reasonable and to consider whether the outcomes of an evaluation are rational and scientific, we apply subjective analytic hierarchy process and objective variation coefficient method into determination of a series of weight based on game theory in this paper. Then we integrate these individual weights into final weights. Further, based on the driving force-state-response model, we build a comprehensive evaluation system to assess the operational performance of a large irrigation district. At last, we evaluate the operational condition of Jinghui Canal Irrigation District in Shaanxi by means of this system. The results show that the decided comprehensive weights can involve decision-makers' subjective requirements but also can represent the actual operational circumstance of an irrigation district. Besides, the evaluating process is simple, scientific, objective, and universal, so it can provide a proper evaluation for the operational situation of an irrigation district. ©, 2014, Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering. All right reserved.


Gong L.-L.,Xi'an University of Technology | Gong L.-L.,Shaanxi Province Institute of Water Resources and Electrical Power Investigation and Design | Huang Q.,Xi'an University of Technology | Wang G.-S.,Shaanxi Province Institute of Water Resources and Electrical Power Investigation and Design | Zhang Z.-Z.,North China University of Water Conservancy and Electric Power
ISWREP 2011 - Proceedings of 2011 International Symposium on Water Resource and Environmental Protection | Year: 2011

Considering the fuzzy feature in assessment, The set pair analysis has been developed by the concepts of the main same, supper same, assimilation degree and the new grades law. The multi-factors degree set pair analysis fuzzy evaluation model has been established and been applied to evaluate the water quality of lake in West Lake and Qinghai Lake. The results show that new evaluation method is feasible and can effectively evaluate water quality of level. © 2011 IEEE.


Fei L.,Xi'an University of Technology | Wang J.,Xi'an University of Technology | Wang G.,Shaanxi Province Institute of Water Resources and Electrical Power Investigation and Design | Feng C.,Shaanxi Province Institute of Water Resources and Electrical Power Investigation and Design | Li K.,Agricultural and Construction Office
Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering | Year: 2015

In order to reflect the importance of each index to evaluate irrigation areas, each index is endowed with the different weights to reflect the difference of its importance, and the accuracy of the comprehensive evaluation result also depends on the rationality of the index weight assignment. The G1 method is applied to subjective empowerment of evaluation index and the improved entropy method was applied to weight of indicators so as to meet the objectivity of the weight and guarantee that the assessment result has a certain explanation. Then the integrated method of game theory was adpted to integrate subjective and objective weights, so that the comprehensive weight of each index was obtained. The determined comprehensive weight was applied to verify the Luohui Canal, Shaanxi large-scale gravity canal irrigation district as an example by the improved linear model. The calculated results agree with those by the extension evaluation method on the whole. With the passage of time, the evaluation level of the Luohui Canal irrigation district gradually becomes good, and the operation condition is getting better and better, which conforms to its development reality. ©, 2015, Editorial Department of Journal of Drainage and Irrigation Machinery Engineering. All right reserved.


Wang J.,Xi'an University of Technology | Fei L.,Xi'an University of Technology | Wang G.,Shaanxi Province Institute of Water Resources and Electrical Power Investigation and Design | Feng C.,Shaanxi Province Institute of Water Resources and Electrical Power Investigation and Design
Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering | Year: 2015

Usual methods for evaluating operational conditions of a large-scale irrigation district are reviewed. The main drawback in these methods is that the weight for each index of evaluation is susceptible to be affected by subjective factors and improved catastrophe theory potentially can determine the weight for each index properly to reduce the influence of subjective factors. Thus, in this paper, a comprehensive evaluation method is proposed based on the catastrophe theory by improving and adjusting the approach for determining comprehensive evaluation values to overcome the problem that comprehensive evaluation values are too high and too close each other so as to achieve a better resolution of evaluation. The comprehensive evaluation method is applied in assessment of the operational conditions of a large-scale irrigation district, namely validated by Luohuiqu Irrigation District, a large-scale gravity canal system in Shaanxi Province. As a result, the comprehensive evaluation values are 0.0605, 0.2657, 0.5491 and 0.6601, respectively, in year 2009, 2010, 2011 and 2012, accordingly, the operational conditions are fair, good, good, good. The evaluation results are basically in accordance with those by the traditional improved TOPSIS method. With time passing, the operational conditions of the district will become good from fair gradually, showing the conditions get better and better. This conforms to the objective reality and development rule of the district. Additionally, the method is simple in calculation and with high reliability, can be a new method for comprehensively assessing operational conditions of a large-scale irrigation district. ©, 2015, Editorial Department of Journal of Drainage and Irrigation Machinery Engineering. All right reserved.

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