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Improvements to the fuzzy mathematics comprehensive quantitative method for evaluating fault sealing

Petroleum Science 2017年第2期14卷 276-285页

作者： Da-Wei Dong Ji-Yan Li Yong-Hong Yang Xiao-Lei Wang Jian Liu Shengli College of China University of Petroleum Dongying 257061 Shandong China Research Institute of Petroleum Exploration and Development Shengli Oilfield Company Dongying 257000 Shandong China Working Stations for Post Doctors Dongying 257000 Shandong China Oil Production Plant of Dongxing Shengli Oilfield Company Sinopec Dongying 257061 Shandong China

fuzzy mathematics is an important means to quantitatively evaluate the properties of fault sealing in petroleum *** accurately study fault sealing,the comprehensive quantitative evaluation method of fuzzy mathematics is improved based on a previous ***,the single-factor membership degree is determined using the dynamic clustering method,then a single-factor evaluation matrix is constructed using a continuous grading function,and finally,the probability distribution of the evaluation grade in a fuzzy evaluation matrix is *** this study,taking the F1 fault located in the northeastern Chepaizi Bulge as an example,the sealing properties of faults in different strata are quantitatively evaluated using both an improved and an un-improved comprehensive fuzzy mathematics quantitative evaluation *** on current oil and gas distribution,it is found that our evaluation results before and after improvement are significantly *** faults in＂best＂and＂poorest＂intervals,our evaluation results are consistent with oil and gas ***,for the faults in＂good＂or＂poor＂intervals,our evaluation is not completelyconsistent with oil and gas *** improved evaluation results reflect the overall and local sealing properties of target zones and embody the nonuniformity of fault sealing,indicating the improved method is more suitable for evaluating fault sealing under complicated conditions.

关键词： Fault sealing property fuzzy mathematics Dynamic clustering method Quantitative study

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Risk assessment and validation of flood disaster based on fuzzy mathematics

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Progress in Natural Science:Materials International 2009年第10期19卷 1419-1425页

作者： Weiguo Jiang a,b,Lei Denga,b,Luyao Chenc,Jianjun Wu a,b,Jing Lia,b a Key Laboratory of Environment Change and Natural Disaster,MOE,Beijing Normal University,Beijing 100875,China b Academy of Disaster Reduction and Emergency Management,MOCA&MOE,Beijing Normal University,Beijing 100875,China c Department of Geography,Texas A&M University,College Station,TX 77843-3147,USA Key Laboratory of Environment Change and Natural Disaster MOE Beijing Normal University Beijing 100875 China Academy of Disaster Reduction and Emergency Management MOCA&MOE Beijing Normal University Beijing 100875 China Department of Geography Texas A&M University College Station TX 77843-3147 USA

Floods often take place around rivers and plains,which indicates a higher risk of flooding in these *** paper adopts fuzzy comprehensive assessment(FCA),simple fuzzy classification(SFC),and the fuzzy similarity method(FSM) to assess flood disaster risk in Kelantan,*** data,such as the flooded area,paddy area,urban area,residential area,and refuges,were overlaid to validate and analyze the accuracy of flood disaster *** results show that(1) 70-75% of flooded areas lie within the higher and high-est risk zones,which shows an effective assessment accuracy;(2) paddy,built-up,and residential areas concentrated in the higher and highest risk zones are more likely to be destroyed by flood disasters;(3) 200-225 refuges in the higher and highest risk zones account for around 50% of all refuges,which means that more refuges should be built in the higher and highest risk zones to meet the accommodation requirement;(4) three methods proved to be feasible and effective in evaluating flood disaster risk,among which FCA is more suitable for the study area than the two other methods.

关键词： Flood disaster Risk assessment Risk validation fuzzy mathematics Malaysia

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Application　of　fuzzy　mathematics　in　the　Evaluation　of　Textbooks　in　institutions　of　Higher　Learning

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Systems Science and Systems Engineering 1996年第2期6卷 215-221页

作者： LI Jianning YAN Xianming(shanxi University, Taiyuan 030006 China)

The article first combines fuzzy mathematics with the analytic hierarchy process (AHP),putting forth the mathematical model of evaluation Of the textbook in institutions of higher *** textbooks will be cited as examples of analysis of practical application. And it is considered that the fuzzy mathematical model is an important means of evaluation of textbooks in institutions of higher learning.

关键词： fuzzy mathematics comprehensive evaluation A HP (Analytic Hierarchical Process) nearness weight

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Application　of　fuzzy　mathematics　to　the　Evaluation　of　Drinking　Water　Quality　in　Wuhan

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Journal of Huazhong University of Science and Technology(Medical Sciences) 1996年第1期16卷 25-26页

作者：袁晶陈秀娜汪蓉 Department of Environmental Health Tongji Medical University Wuhan

The quality of raw water from major water plants in Wuhan was evaluated by using fuzzy synthetic evaluation *** is suggested to select the alternative synthetic evaluation model when the first fuzzy synthetic model fa... 详细信息

关键词： drinking water fuzzy mathematics synthetic evaluation method

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Summary of Application of fuzzy mathematics in Construction Project Management

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World Journal of Engineering and Technology 2021年第3期9卷 407-422页

作者： Dongyou Tong Yueming Wang School of Civil Engineering and Architecture Southwest University of Science and Technology Mianyang China

Construction project management is an important aspect of civil engineering construction. How to use scientific and efficient methods to effectively manage construction projects is the focus of construction project development under the current situation. This article discusses the application of fuzzy mathematics in construction project management. The study found that in the process of construction project management, it was found that a single fuzzy mathematical method was difficult to adapt to the current complex and changeable construction projects. Combining fuzzy mathematics with other management methods and computer applications can better simplify complex things, reduce human subjectivity, increase calculation speed, and achieve a combination of qualitative and quantitative research;selection of optimization schemes and risk assessment, etc. All have a good effect, and can better deal with possible or uncertain things and emergencies in the process of project management. At the same time, combining fuzzy mathematics with heuristic algorithms or meta-heuristic algorithms can make research more objective, improve management efficiency and calculation speed.

关键词： fuzzy mathematics Project Management Civil Engineering

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Study of a method model to determine oil-gas pipeline reliability based on fuzzy mathematics

Study of a method model to determine oil-gas pipeline reliab...

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2010 International Conference on Remote Sensing (ICRS 2010)

作者： Wang Xiao-wan School of management Xi’an University of Architecture & Technology Xi’an China Luo Zheng-shan School of management Xi’an University of Architecture & Technology Xi’an China

The concept of the target reliability,technical connotation and significance of pipeline are interpreted in this paper based on the national and international research actuality,and the existing problems of pipeline failure consequence severity graded by a single factor is pointed *** several important influence factors to gas pipeline target reliability are analyzed *** assessment system based on the fuzzy mathematics theory is pointed out and the influence of these factors to the target probability of gas pipelines is *** relation between the failure severity of pipelines and the gas pipeline target reliability is *** concrete confirming method of pipeline target reliability is established in this ***,the quantificational research of oil-gas pipeline reliability on the basis of fuzzy mathematics theory is proved to be feasible through examples and is applicable in project,and could offer scientific foundation to the management and maintenance of gas pipeline.

关键词： Gas pipeline Target reliability Acceptable failure probability fuzzy mathematics

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Application of fuzzy mathematics Theory to Set up Sports and Health Course of Study Evaluating System

Application of Fuzzy Mathematics Theory to Set up Sports and...

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The Xi’an 2012 International Conference on Sport Science and Physical Education(ICSSPE 2012)

作者： Xin-bao WANG Wei-dong HUANG Xue-min ZHAO P.E.of Jiang Xi Normal University P.E.of Jiujiang University

This paper Set up model for Sports and Health Course of Study Evaluating System by means of fuzzy mathematics,To make the students *** the rationalization,scientific,the quantitative and qualitative comprehensive evaluation,the maneuverability is strong,be able to fully mobilize students' learning participate in sports the enthusiasm and initiative,so as to promote the improvement of teaching *** results show that Sports and Health course learning evaluation index,has higher reliability and validity;evaluation system for other similar PE study evaluation provides beneficial reference,it is worth using widely;Using the method of fuzzy mathematics comprehensive evaluation,the index is complete,can fully consider the students learning process various factors,can effectively solve the traditional evaluation content method of the defect of single;Using the fuzzy mathematics method can better solve the achievements evaluation in the process of factors contributing to accurate data to quantify problem.

关键词： fuzzy mathematics Sports and Health Evaluating System

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Teaching fuzzy mathematics and Intelligent Robot in China High School

Teaching Fuzzy Mathematics and Intelligent Robot in China Hi...

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The Second Conference on fuzzy Information & Engineering

作者： HAORAN LIN China High School, Shanghai, 200233,P.R.China

What is fuzzy mathematics? Can students in middle school learn it a little? How can we try to teach fuzzy mathematics and some revelations?

关键词： fuzzy mathematics intelligent robot high school

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Research of Script Figure Character Recognition Algorithm Based on fuzzy mathematics and D-S Evidential Theory

Research of Script Figure Character Recognition Algorithm Ba...

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2009中国控制与决策会议

作者： CHEN Yi,Wang Gai-yun,CHEN Le-geng,LI Bin School of Computer & Control Guilin University of Electronic Technology,Guangxi,Guilin 541004,China

＜正＞The script figure character recognition is one of the key technologies for the solution of automatic data input to *** the random of writing and strokes deformation,the script figure character recognition is very *** membership function of fuzzy mathematics is adopted in this *** order to improve the algorithm stability of the abstraction to the character,the characteristic vector is described *** characteristic vector fuses by D-S rule and according as the fusion results,the script character is *** the experimental simulation,the results show that the recognition method is effective and superiority.

关键词： fuzzy mathematics D-S evidential theory information fusion characteristic vector character recognition

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Study of a method model to determine oil-gas pipeline reliability based on fuzzy mathematics

Study of a method model to determine oil-gas pipeline reliab...

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The 2011 Fourth International Symposium on Knowledge Acquisition and Modeling（KAM 2011）

作者： Wang Xiao-wan Luo Zheng-shan School of management Xi’an University of Architecture ＆ Technology

The concept of the target reliability, technical connotation and significance of pipeline are interpreted in this paper based on the national and international research actuality, and the existing problems of pipeline failure consequence severity graded by a single factor is pointed out. The several important influence factors to gas pipeline target reliability are analyzed particularly. The assessment system based on the fuzzy mathematics theory is pointed out and the influence of these factors to the target probability of gas pipelines is assessed. The relation between the failure severity of pipelines and the gas pipeline target reliability is studied. The concrete confirming method of pipeline target reliability is established in this paper. Lastly, the quantificational research of oil-gas pipeline reliability on the basis of fuzzy mathematics theory is proved to be feasible through examples and is applicable in project, and could offer scientific foundation to the management and maintenance of gas pipeline.

关键词： Gas pipeline Target reliability Acceptable failure probability fuzzy mathematics

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