scholarly journals Improved Set Pair Analysis and Its Application to Environmental Impact Evaluation of Dam Break

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 821 ◽  
Author(s):  
Meimei Wu ◽  
Wei Ge ◽  
Zongkun Li ◽  
Zening Wu ◽  
Hexiang Zhang ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Impact Evaluation ◽  
Evaluation Model ◽  
Rapid Development ◽  
Dam Break ◽  
Good Effect ◽  
Set Pair Analysis ◽  
Management Measures ◽  
The Index System ◽  
Pair Analysis

Despite the rapid development of risk analysis in dam engineering, there is a relative absence of research on the environmental impact of dam break. As a systematic theory, set pair analysis has a good effect in dealing with uncertainties, although the result is relatively rough and easy to distort. A connection degree of five grades and a generalized set of potential are introduced to improve traditional set pair analysis. Combined with the index system, the evaluation model of the environmental impact of dam break is established, which is based on generalized set pair analysis. Taking Sheheji Reservoir dam as an example, a comparison of evaluation results of fuzzy mathematics theory and generalized set pair analysis is made, which verifies the scientificity and practicability of the method proposed in this paper. The results show that the evaluation grade of the environmental impact of dam break at Sheheji Reservoir is serious, and appropriate management measures should be taken to reduce the risk.

scholarly journals Optimization of Performance Evaluation of Urban Road Pavement

2021 ◽  
Vol 283 ◽  
pp. 02033
Author(s):  
Ziyi Zhang ◽  
Yu Sun ◽  
Han Xu ◽  
Qiyun Zhu
Keyword(s):  
Performance Evaluation ◽  
Evaluation Model ◽  
Vital Role ◽  
Set Pair Analysis ◽  
Road Maintenance ◽  
Entropy Weight ◽  
Urban Road ◽  
The Road ◽  
Road Pavement ◽  
Pair Analysis

In recent years, urbanization has developed rapidly, and urban road play a vital role as the premise. Due to the good effectiveness of asphalt pavement, which is more popular in urban road, and road maintenance demands are also increasing. In order to make the maintenance work appropriate, accurate pavement performance evaluation is the premise. This paper collects the data of a road pavement condition in Shanghai and calculates the sub-indexes of each section. We use the entropy weight method to obtain the influence degree of each sub-index. Then we use the revised set pair analysis to construct the comprehensive performance evaluation model of urban road pavement. The analysis shows that compared with the standard method and the set pair analysis, the revised model is more objective, in line with the actual use of the road.

The Evaluation Model of Bridge Construction Safety Management Variable Fuzzy Sets

2014 ◽  
Vol 919-921 ◽  
pp. 1494-1498
Author(s):  
Jing Yang ◽  
Shun Liang Chen
Keyword(s):  
Safety Management ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Relative Difference ◽  
Construction Safety ◽  
Bridge Construction ◽  
The Index System ◽  
Construction Safety Management ◽  
Pair Analysis

Basing on the index system and evaluation data of bridge construction safety management status, this paper puts forward the relative difference function of variable fuzzy set by the method of set pair analysis, and develops the fuzzy comprehensive evaluation dynamic model of bridge construction safety management status. This model was applied to assessment of a bridge construction safety management status, and achieved the desired results.

Predictive Comprehensive Environmental Impact Evaluation for Marine Reclamation and Resource Utilization

2014 ◽  
Vol 507 ◽  
pp. 837-840
Author(s):  
Ming Chang Li ◽  
Qi Si ◽  
Ying Wang ◽  
Bin Zhou
Keyword(s):  
Environmental Impact ◽  
Resource Utilization ◽  
Impact Evaluation ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Efficient Tool ◽  
Comprehensive Evaluation Model ◽  
Cloud Theory ◽  
Environmental Impact Evaluation

In this paper, the predictive data of hydrodynamics and sediment are input into a systematic comprehensive evaluation model for guiding the marine reclamation in Tianjin. The predictive data are obtained by the numerical simulated results of hydrodynamics, water exchange and sediment. The systematic comprehensive evaluation model is proposed by a nonlinear cloud theory method, which has characteristics of high precision and concise. So the presented model is used to evaluate the feasibility of marine reclamation and resource utilization, named that Ergang Island. This research shows that the predictive comprehensive environmental impact evaluation method is an efficient tool for guiding the marine reclamation and improving the precision of environmental impact evaluation conclusion.

scholarly journals Dynamic evaluation of regional water resources carrying capacity based on set pair analysis and partial connection number

2021 ◽  
Author(s):  
Zheng Li ◽  
Juliang Jin ◽  
Yi Cui ◽  
Libing Zhang ◽  
Chengguo Wu ◽  
...  
Keyword(s):  
Water Resources ◽  
Carrying Capacity ◽  
Evaluation Model ◽  
Set Pair Analysis ◽  
Connection Number ◽  
Water Resources Carrying Capacity ◽  
Micro Motion ◽  
Partial Connection ◽  
Pair Analysis ◽  
Regional Water

Abstract In order to describe the micro motion between the connection number components and seek a more applicable evaluation model, quantitatively evaluate and analyze regional water resources carrying capacity (WRCC). Firstly, an evaluation index system and grade standards of regional WRCC were constructed. Then, a method for determining the connection number was proposed, which considered the micro motion between the connection number components in system structure. Finally, built an evaluation model based on set pair analysis (SPA) and partial connection number (PCN) that used subtraction set pair potential (SPP) to identify vulnerability factors, and identification results were compared with total partial connection number (TPCN). The model was applied to Huaibei City, Anhui Province, China. The results showed that: the WRCC grade value was between 2 and 3 that was poor; the support and regulation subsystem grade value was between 2 and 3, and the pressure subsystem grade value was between 1 and 2. SPP identified that the support force and regulation force subsystem were the vulnerable subsystems. Eight indexes such as water resources per capita, rate of ecological water consumption and density of population were the main indicators causing the poor WRCC, which were in good agreement with the local measured data. In addition, the SPP and TPCN are compared to further verify rationality of the connection number determination method and reliability of the identification results. The model established in this paper has strong applicability and can also be used for the dynamic evaluation of other resources, environment and ecological carrying capacity. The results in this study can provide a scientific basis for water resources management and decision-making.

scholarly journals Application of Set Pair Analysis in a Comprehensive Evaluation of Water Resource Assets: A Case Study of Wuhan City, China

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1718 ◽  
Author(s):  
Jingdong Zhang ◽  
Yanan Li ◽  
Chaoyang Liu ◽  
Zhiguang Qu ◽  
Fei Li ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Resource ◽  
Comprehensive Evaluation ◽  
Rapid Development ◽  
Assessment System ◽  
Set Pair Analysis ◽  
Resource Value ◽  
Entropy Weight ◽  
Wuhan City ◽  
Pair Analysis

With the rapid development of the social economy, China is suffering from severe water scarcity due to improper management. Evaluation of water resource value is a crucial issue for innovative management in regional water resources. In this paper, in consideration of the complexity and uncertainty of water resources, 15 indicators were selected to establish the assessment system for its value in Wuhan City from the following three aspects, namely the environment, resources, and society. The analytic hierarchy process (AHP) and Entropy Weight Method were combined to calculate the comprehensive weight. An improved set pair analysis (SPA) model was applied to evaluate water resource assets in the period of 2013–2017. For the sake of the dependability of these results, the James Pollution Loss model was utilized to compute loss of water resource value caused by the decline of water quality in the water pollution environment. The results show that the amount of water resource through physical quantitative accounting in Wuhan City fluctuates greatly. The initial change is relatively stable, then surges in 2015 and 2016, but slumps in 2017. The total water resource assets for Wuhan City from 2013 to 2017 are 14.221, 14.833, 28.375, 75.558, and 21.315 billion RMB, respectively. Therefore, water resource value accounting plays an indispensable role in the environmental protection and sustainable development of water, as well as provides a support for comprehensive calculation and management of various valuable natural resources.

Comprehensive Evaluation of Bolt and Wire Mesh Support Scheme of Roadway Based on Set Pair Analysis

2013 ◽  
Vol 838-841 ◽  
pp. 1250-1255 ◽  
Author(s):  
Shen Hua Jiao ◽  
Jin An Wang ◽  
Hao Liang Zhou
Keyword(s):  
Quantitative Methods ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Wire Mesh ◽  
Set Pair Analysis ◽  
Optimal Scheme ◽  
Qualitative And Quantitative Methods ◽  
Set Up ◽  
Scheme Evaluation ◽  
Pair Analysis

Set pair analysis is a combination of qualitative and quantitative methods used in decision-making. Aiming at the irrelevance of each indicator, an evaluation model of bolt and wire mesh support scheme of roadway based on set pair analysis is set up and a relativity to optimal scheme which combines multiple indicators as well as its set pair situation are applied to describe the comprehensive benefits of bolt and wire mesh support scheme. Evaluation results of three optional support schemes in a mine of Yaojie Coal and Electricity Co., Ltd are obtained using this method, and an optimal scheme with the best comprehensive benefits is determined.

scholarly journals Uncertain Risk Assessment of Knowledge Management: Based on Set Pair Analysis

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Guibin Yang ◽  
Hongyu Gao
Keyword(s):  
Knowledge Management ◽  
Evaluation Model ◽  
Development Trend ◽  
Enterprise Management ◽  
Set Pair Analysis ◽  
Chinese Enterprises ◽  
Connection Number ◽  
Provide Decision Support ◽  
The Development Trend ◽  
Pair Analysis

Since the knowledge resource becomes an important part of enterprise resources, the knowledge management risks could significantly affect the enterprise operation efficiency. Controlling knowledge management risks is one of the enterprise management tasks; the managers and researchers focus on how to effectively evaluate the risks. This paper aims to solve this problem and puts forward an evaluation model of the uncertain risks of knowledge management. Based on set pair theory, a model is established to identify the knowledge management risk. Through the concept of connection number, knowledge management risk is divided into five levels. Meanwhile, the development trend of knowledge management risk is classified into same tendency, equal tendency, and contrary tendency by the concept of set pair theory. The application of this model is empirically verified with Chinese enterprises. Through both static and dynamic evaluations of the knowledge management risk, this paper can effectively analyze risk development trend and provide decision support for the enterprise manager about the uncertain risks of knowledge management.

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