scholarly journals Application of fuzzy comprehensive evaluation method using entropy weight in groundwater quality evaluation: A case study on Xianyang, China

2020 ◽  
Vol 467 ◽  
pp. 012146
Author(s):  
Qiying Zhang ◽  
Panpan Xu ◽  
Hui Qian
Keyword(s):  
Groundwater Quality ◽  
Quality Evaluation ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Entropy Weight ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method

scholarly journals Groundwater quality evaluation model based on multi-scale fuzzy comprehensive evaluation and big data analysis method

2021 ◽  
Author(s):  
Hongxia Cheng ◽  
Zhang Minghui
Keyword(s):  
Big Data ◽  
Groundwater Quality ◽  
Quality Evaluation ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Coarse Grained ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Multi Scale

Abstract The reasonable use of water resources has become an important issue for the sustainable development of humanity in the future. Many researches focus on groundwater quality inspection, but not groundwater quality assessment. This paper aims to study groundwater quality evaluation models based on multi-scale fuzzy comprehensive evaluation and big data analysis methods. We combines coarse-grained multi-scale fuzzy entropy and fuzzy comprehensive evaluation method to establish a groundwater quality evaluation model based on big data environment. The evaluation of groundwater samples from 327 test points in Huangpu District, Xuhui District, Hongkou District, and Putuo District of Shanghai was conducted. The results show that the overall condition of Shanghai groundwater is better, and more than 94% of samples qualified as drinking water sources. The method presented in this paper not only guarantees that the coarse-grained data on all scales are consistent with the length of the original data, but also avoids the phenomenon of data loss, which greatly improves the accuracy of subsequent algorithms. HIGHLIGHT This article first introduces the theory of the multi-scale fuzzy comprehensive evaluation method, then uses the scale analysis method to determine the weight and the fuzzy comprehensive evaluation method to calculate the current status of groundwater resources in Shanghai. Finally, it compares the conclusions obtained with the fuzzy comprehensive evaluation method and analyzes it. Similarities and differences in evaluation results and their causes. It can be seen from the comprehensive comparison that the evaluation using the multi-scale fuzzy comprehensive evaluation method can more intuitively compare the differences in water quality between different administrative regions.The evaluation system in this paper is more comprehensive, and its evaluation results are more comprehensive and reasonable than the fuzzy comprehensive evaluation method.

Fuzzy Comprehensive Evaluation Method for Workability of SCC

2010 ◽  
Vol 108-111 ◽  
pp. 888-892
Author(s):  
Ya Qing Jiang ◽  
Na Na Tian ◽  
Si Jia Zhang
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Construction Sites ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Slump Flow ◽  
Single Method

Self-compacting concrete (SCC) has been widely used in engineering for improving the product quality and efficiency at the construction sites, enhancing the working conditions and the appearance of concrete. Workability is an important property of SCC. But none of a single method has been developed for evaluation workability of SCC efficiently. Aiming at the quality control of fresh SCC, a fuzzy comprehensive evaluation method for evaluating workability of SCC was put forward and a case study was done by measuring slump, slump flow, L-box ratio, J-ring flow, bleeding and sieve segregation of fresh SCC in the present paper. Evaluation results indicated that fuzzy comprehensive evaluation method can give a quantitative evaluation of workability of SCC and it is convenient to establish an expert system for controlling the quality of fresh SCC by using fuzzy comprehensive evaluation method.

Evaluation on Sustainable Development Level - A Case Study of Liaocheng City

2013 ◽  
Vol 361-363 ◽  
pp. 111-114
Author(s):  
Kai Liu ◽  
Cheng Xin Wang ◽  
Shan Shan Song ◽  
Qiang Li
Keyword(s):  
Sustainable Development ◽  
Capacity Building ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Development Level

Sustainable development is a hot issue under the current background of resources and environmental crises. In this paper, Liaocheng City's sustainable development level is evaluated by using fuzzy comprehensive evaluation method. It is concluded that Liaocheng City's sustainable development level turned out to be moderate. The constraints of Liaocheng City's sustainable development are sustainable development awareness isn't formed and some problems are serious. Trains of thought include: strengthen sustainable development concept's understanding, strengthen capacity-building of improving sustainable development level and solve sustainable development practices' current problems.

Application of Fuzzy Comprehensive Evaluation Method in Groundwater Quality Assessment in Handan City

2010 ◽  
Vol 113-116 ◽  
pp. 1275-1279
Author(s):  
Xue Jiang ◽  
Chang Lai Xiao ◽  
Xiu Juan Liang ◽  
Meng Yao Xu
Keyword(s):  
Groundwater Quality ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Ammonia Nitrogen ◽  
Total Hardness ◽  
Volatile Phenols ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Handan City

The fuzzy comprehensive evaluation method was applied to evaluation of groundwater quality .According to the measured data, the Brewery, Small North Castle and Weft Plant in the southeast of Handan were selected as the sampling points. Then with the actual situation, 13 kinds of evaluation factors including pH, total hardness, sulfate, chloride, volatile phenols, nitrate, nitrite, ammonia nitrogen, fluoride, cyanide, Hg, As, Cr (hexa-valend) were chosen to evaluate groundwater quality. From the aspects of weight and fuzzy matrix computing, the whole process of application of fuzzy comprehensive evaluation method was introduced into groundwater quality evaluation in this paper.

Entropy Weight-Fuzzy Comprehensive Evaluation Method of the Safety Evaluation of Water Inrush

2013 ◽  
Vol 868 ◽  
pp. 300-305 ◽  
Author(s):  
Tian Jun Zhang ◽  
Jin Hu Ren ◽  
Sheng Hong Yu ◽  
Wei Cui
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Water Inrush ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Actual Situation ◽  
Entropy Weight ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method

For the accuracy of the inrush risk assessment of the problem, put forward in the mine inrush risk assessment using the entropy weight fuzzy comprehensive evaluation method to determine the index weight, through the membership function in fuzzy comprehensive evaluation to quantify the qualitative description of these factors, evaluated the henan jiaozuo mine inrush risk. The results show that the mine water inrush risk grade is "great", the actual mine water inrush accidents have occurred, prediction results conform to the actual situation, and safety evaluation value based on the principle of maximum membership degree is more than analytic hierarchy - fuzzy comprehensive evaluation to get , 0.0696. Thus, the method in the mine inrush prediction can objectively and accurately reflect the actual situation of mine inrush.

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