Application of Extenics in Evaluation of Risk of Dam

2013 ◽  
Vol 726-731 ◽  
pp. 744-749 ◽  
Author(s):  
Yong Chao Shi ◽  
Ai Wu Cao ◽  
Jin Wang

According to the extension of matter element, a quantitative evaluation model of dam risk analysis of multiple parameters is developed. Matter-element model was constructed to assess dam behavior by matter-element transform. The emergency capacity besides safety of dam and failure losses is taken into concerned during the analysis of risk of dam. Finally, a simple example shows that is more reasonable compared with traditional methods.

2020 ◽  
Vol 16 (3) ◽  
pp. 80-99
Author(s):  
Junfei Chen ◽  
Cong Yu

The interaction of human activity, climate change, and urbanization gives rise to more frequent urban stormwater disasters, which causes great economic loss in cities. This article presents a prototype of an interactive WebGIS system for urban stormwater risk analysis. The system has a Browse/Server(B/S) structure and uses WebGIS techniques for prototype development. It is based on the theory of disaster system and Cloud matter-element model for risk assessment. The risk results are immediately generated and visualized interactively by rendering risk maps. Finally, two urban stormwater events in Nanjing in 2015 and 2016 were selected to verify the accuracy of the risk assessment. The results show that the intelligence system can effectively assess the risk level and identify the spatial-temporal distribution of urban stormwater risk in Nanjing, China.


2010 ◽  
Vol 102-104 ◽  
pp. 237-241
Author(s):  
Qi Dong Chen ◽  
Yan Nian Rui ◽  
Qing Zhang Chen ◽  
Zheng Xiao Hua ◽  
Lian Sheng Zhao

It is important to assembling-possibility of products for the DFA (Design For Assembling). Asembling factors is analyzed, and a matter-element model is deduced, the evaluation model of products design for assembling is established according to the extensive theory and superiority evaluating method, and the process of this method is discussed in detail. The example confirmed that the evaluating method is advanced and practicality. The present analysis is qualitative combining.


2011 ◽  
Vol 204-210 ◽  
pp. 834-837 ◽  
Author(s):  
Ping Lv ◽  
Dong Liu ◽  
Fei Fei Zhao

Aiming at water security issues existed in water resources development and utilization, studied the water resources carrying capacities of fifteen farms in Jiansanjiang branch bureau in 2008. Used grey correlation analysis to establish evaluation indices system. Entropy theory was introduced into weight calculation. Synthesized evaluation results of traditional matter-element model, fuzzy comprehensive evaluation model and fuzzy matter-element model to grade water resources carrying capacities. The results show that water resources carrying capacities of Farm Shengli, Qindeli, Qianshao and Qianfeng are gradeⅠ; carrying capacities of Farm 859, Daxing, Qinglongshan, Qianjin, Honghe, Yalvhe and Nongjiang are gradeⅡ; carrying capacities of Farm Qixing, Chuangye, Hongwei and Erdaohe are gradeⅢ. The study achievements provide scientific evidences for water resources protection and sustainable utilization in Jiansanjiang branch bureau.


2016 ◽  
Vol 17 (3) ◽  
pp. 870-878
Author(s):  
Yue Zhang ◽  
Sen Peng ◽  
Xin-hua Zhao

Research into natural organic matter (NOM) removal in drinking water treatment processes is mostly independent, distributed, disconnected and unable to meet the needs of technology application; therefore, an assessment of the value of NOM treatment processes is necessary. In this paper, a hybrid evaluation model based on rough set theory and a matter-element model was used to evaluate the value of eight NOM removal processes. The counting process of the weighting factor did not include any subjective information which avoided the artificial factor deviation and made the evaluation more objective. The result indicated that in addition to the MIEX + coagulation + sedimentation + filtration (MCSF) treatment process, the rest of the NOM treatment processes had a certain value; the coagulation + sedimentation + filtration + adsorption (CSFA) and coagulation + sedimentation + filtration + membrane (CSFM) treatment processes had the highest values which meant that these treatment processes could remove the NOM in drinking water effectively. It also illustrated that the coagulation + sedimentation + adsorption + membrane (CSAM) treatment process had high feasibility, which has important significance for guaranteeing the safety of drinking water.


2013 ◽  
Vol 734-737 ◽  
pp. 3290-3294
Author(s):  
Zi Lin Xu ◽  
Ju Qin Shen ◽  
Bo Liu ◽  
Liang Tang ◽  
Feng Wang

The index system for the tourism value evaluation of the urban industrial heritage was constructed from four perspectives, including the value of locational factor, value of science and technology, value of humanistic emotions and the aesthetic value of tourism. The evaluation model for the urban industrial heritage was established on the basis of matter-element model and analytical hierarchy process.


2014 ◽  
Vol 638-640 ◽  
pp. 2419-2422
Author(s):  
Liang Tang ◽  
Ju Qin Shen ◽  
Bo Liu ◽  
Li Rong Bao ◽  
Zi Lin Xu

Against the background of Chinese construction enterprise constructing learning-oriented enterprise, this essay probes into the methods of evaluating the implementation effect of Chinese learning-oriented construction enterprise. The evaluation system of implementation effect of Chinese learning-oriented construction enterprise is constructed from four aspects, i.e. social satisfaction, interior operation, financial position as well as learning and growth and evaluation model of implementation effect is also built based on matter-element model.


2015 ◽  
Vol 737 ◽  
pp. 441-445
Author(s):  
Zhe Sheng Zhao ◽  
Bi Lin Shao

In view of the current situation that lacking of the guidance method on evaluation emergency ability for construction enterprises,This article uses the extension matter-element model to evaluate construction enterprise accident emergency ability. According to the time node characteristics of accident emergency ability,Using AHP for constructing the evaluation index system of accident emergency abilities of construction enterprises and determining the weight coefficient of each index ,Using extension theory to establish the evaluation model of construction enterprise emergency ability,and taking an example conducted evaluation and determined the accident emergency ability grade.


2014 ◽  
Vol 960-961 ◽  
pp. 375-381
Author(s):  
Feng Ren

In order to assess the operational efficiency of cogeneration heating system and measure the systems social, economic, energy-saving and environmental protection benefits in North China, an evaluation index system is built up after analyzing the influence factors which may impact the heating system operation. The association degree function of classical matter element method is improved. And then, an improved matter-element evaluation model is established, which not only can figure out the evaluation grade that heating system belongs to, but also can point out the direction of the further improvement work. Besides, the model has other merits, such as uncomplicated operation, good scalability and so on. Example indicates that this evaluation model has excellent applicability and operability.


2012 ◽  
Vol 594-597 ◽  
pp. 2945-2950
Author(s):  
Guang Yue Wang ◽  
Jan Wu Zhao

To solve the existing fuzziness in the grading of stability evaluation of geocell protected slope and inconsistent between evaluation result by single index and the fact, this paper establishes index system of the stability evaluation of geocell protection of slope and propose a method. First, two-grade Fuzzy Matter-element Model is established based on the index system. Second, factor weights of evaluation index are calculated by AHP. Finally, the grade of the stability of geocell protection of slope is obtained based on Correlation Degree. Analysis results show that based on comprehensive consideration of subjective factors and objective factors, this method is effective and agrees well with engineering practical.


2021 ◽  
Vol 2095 (1) ◽  
pp. 012023
Author(s):  
Yawei Xue ◽  
Xueying Wang ◽  
Lang Zhao ◽  
Yizheng Li

Abstract With the increasing complexity of power system grid structure and development environment, the dimensions and factors that need to be considered in the power grid statu analysis also become complex. It is necessary to judge the aspects of power grid that need to be improved through the analysis results. This paper constructs an evaluation index system of power grid, including safety reliability, operation efficiency, operation margin of power grid, power grid structure and equipment level. Based on the index system, an evaluation model combining matter-element model and entropy weight method is proposed. Matter element model can not only quantitatively judge the development level of power grid, but also find out the weakness of power grid and put forward the direction of its improvement. Finally, a case study is proposed to show that the matter element model analysis in power grid comprehensive evaluation is feasible and has a good evaluation accuracy.


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