scholarly journals Risk Assessment of Ferris wheel Trusses Based on FMECA-Fuzzy Evaluation Method

2017 ◽  
Author(s):  
Xiang-dong Li ◽  
Min-yao Huang ◽  
Xin-dong Zhang ◽  
Wei Zhang ◽  
Su-qian Lian ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Fuzzy Evaluation ◽  
Ferris Wheel

Research on HSE Risk Assessment and Control in Oil-Gas Drilling Operations

2014 ◽  
Vol 919-921 ◽  
pp. 500-506
Author(s):  
Fei Li ◽  
Guang Zhang
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Oil And Gas ◽  
Assessment System ◽  
Control Measures ◽  
Fuzzy Evaluation ◽  
Oil And Gas Exploration ◽  
Gas Drilling ◽  
Drilling Operations ◽  
Oil Gas

As the leading of oil and gas exploration and development, oil-gas drilling operations with high investment, high technology, and other industries interchange and perennial wild characteristics, there are various HSE risks during operation. Constructing HSE risk assessment system of oil-gas drilling operations, using AHP to construct indicators were analyzed and compared, and calculate the index weight. Then build fuzzy evaluation matrix based on expert evaluation method, get fuzzy evaluation result is "high risk". Finally, from four aspects (people, object, environment, and management) proposed HSE control measures.

scholarly journals Urban Flooding Risk Assessment Based on Numerical Simulation of Sub-catchment Area: A Case Study From Chengdu, China

2021 ◽  
Author(s):  
Xuejin Ying ◽  
Ting Ni ◽  
Mingxia Lu ◽  
Zongmin Li ◽  
Yi Lu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Flood Hazard ◽  
Evaluation Model ◽  
Assessment System ◽  
Urban Flooding ◽  
Fuzzy Evaluation ◽  
Evaluation Indexes ◽  
Flooding Disaster ◽  
Flooding Risk

Abstract Urbanization and climate change usually result in frequent urban flooding. Since the floods cannot be avoided, the scenario simulation combined with risk analysis is an effective way to assess the disaster level and reduce direct damage loss when facing the emergency management problems. Different from the whole city dimension, the paper proposed a sub-catchment multi-index hesitant fuzzy evaluation model for the community planning level, and takes Jinjiang District of Chengdu city as the research object. Firstly, based on the PSR (Pressure-State-Response) model, the risk assessment system has been established in three aspects, including the current situation of urban drainage, the basic geographic information, and the social influence. Secondly, A total of 14 evaluation indexes were selected, among which the pressure index came from the calculation results of ArcGIS and EPASWMM5 model such as runoff coefficient, maximum water depth, etc. Thirdly, the expert hesitate fuzzy evaluation method was used to obtain the weight of 14 indexes of each sub-catchment. Finally, the 224 evaluation results were compared, and the urban flooding disaster risk map has been drawn. It is mainly concluded that 160 medium-higher risk areas were mainly concentrated in high built-up area in study area. Furthermore, the evaluation model is very useful as a decision-making tool for mitigation of the flood hazard and its associated risk.

Risk Assessment of Smart Grid Cyber Security Based on Multi-Level Fuzzy Comprehensive Evaluation Method

2012 ◽  
Vol 605-607 ◽  
pp. 2311-2317 ◽  
Author(s):  
Ke Wei Zhang
Keyword(s):  
Risk Assessment ◽  
Smart Grid ◽  
Cyber Security ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Detection System ◽  
Fuzzy Comprehensive Evaluation ◽  
Security Level ◽  
Practical Case ◽  
Fuzzy Evaluation

This paper proposes a comprehensive risk assessment index system for Smart Grid cyber security, including five first-level indicators such as entity and environment security, management security, data security, software security and communication security. Every indicator includes specific sub factors. The cyber security risks for Smart Grid are emphatically analysed. The paper integrates AHP with Fuzzy evaluation method, through which the weight of each layer and the risk assessment matrix are determined. Practical case study shows that cyber security level of the Smart Grid is good, but it needs improvement and reinforcement in organization system, data signature, data backup and intrusion detection system.

Risk assessment of logistics finance enterprises based on BP neural network and fuzzy mathematical model

2020 ◽  
Vol 39 (4) ◽  
pp. 5915-5925
Author(s):  
Wang Aiqun ◽  
He Zicong ◽  
Wang Yilin
Keyword(s):  
Neural Network ◽  
Mathematical Model ◽  
Risk Assessment ◽  
Bp Neural Network ◽  
Evaluation Method ◽  
Nonlinear Function ◽  
Financial Risks ◽  
Nonlinear Relationship ◽  
Fuzzy Evaluation ◽  
Good Ability

Neural network is used to deal with the nonlinear relationship, usually there is a strong nonlinear relationship between input and output. Through the self-learning of neural network, the weight of data samples is determined after training, and the optimal solution is obtained according to the process steps. In this paper, thea authors analyze the risk assessment of logistics finance enterprises based on BP neural network and fuzzy mathematical model. For logistics companies, it is necessary to determine the ability of logistics companies to engage in logistics finance business, and then to make detailed and accurate grasp of relevant information. The difference between the actual output and the expected output of the training sample is small, so the fitting is completed well, and the parameters of the neural network are further adjusted. The results show that the model has a good ability of learning nonlinear function relations. To sum up, in order to reduce logistics financial risks, we must fully understand the factors that affect logistics financial risks, determine the proportion of risk factors, and then use the fuzzy evaluation method to analyze the financial business risks.

Risk analysis of floodwater resources utilization along water diversion project: a case study of the Eastern Route of the South-to-North Water Diversion Project in China

2019 ◽  
Vol 19 (8) ◽  
pp. 2464-2475
Author(s):  
Guohua Fang ◽  
Xiaohua Zhu ◽  
Xianfeng Huang
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Assessment Model ◽  
Water Diversion ◽  
Optimal Decision ◽  
Fuzzy Evaluation ◽  
The South ◽  
Analytic Hierarchy ◽  
Water Diversion Project ◽  
North Water

Abstract Based on fuzzy mathematics, a risk assessment model of floodwater resources utilization in a water diversion project was established based on the fuzzy network analytic hierarchy process (F-AHP). First, the weight of each factor was determined through AHP, and then the fuzzy evaluation method (FEM) was used for analysis and comparison. Finally, the optimal decision scheme was determined. The model was applied to the Eastern Route of the South-to-North Water Diversion Project (SNWDP) for floodwater resources utilization risk assessment. The results show that the model can utilize the risk factors of floodwater resources for identification and sorting, and then make a risk evaluation. The risk of floodwater resources utilization in a normal flow year is the lowest and the benefit is remarkable, providing a reasonable control scheme, and reducing unnecessary losses for the risk of floodwater resources utilization.

The Risk Assessment of High-Tech Project Based on Comprehensive Evaluation of Fuzzy and Gray Model

2013 ◽  
Vol 475-476 ◽  
pp. 1734-1737
Author(s):  
Xiao Bin Ding
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Evaluation Model ◽  
Theory Model ◽  
High Tech ◽  
Production Cycle ◽  
Fuzzy Evaluation ◽  
Wide Range

High-tech projects have high risks involving wide range of links, high expense of investment, long period of development and production cycle, complicated operation system, etc. When evaluating the project's risk, a separate gray method or fuzzy theory model is not comprehensive, it should combine the gray method with the fuzzy evaluation model. From the fuzzy evaluation and gray evaluation method the gray clustering statistic could be obtained by use of grey cluster theory. It is necessary to construct fuzzy membership matrix of risk and establish a fuzzy and gray comprehensive evaluation method, and adequately adopt expert's evaluation information of the fuzziness and grayness. Finally, using concrete empirical analysis in aviation armament project risk assessment, the feasibility and the correctness of the model are verified.

A fuzzy evaluation method of road vehicle automatic weighing instrument in dynamic force metrological performance

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1365-1372
Author(s):  
Xiaohui Mao ◽  
Liping Fei ◽  
Xianping Shang ◽  
Jie Chen ◽  
Zhihao Zhao
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Dynamic Performance ◽  
Dynamic Force ◽  
Fuzzy Evaluation ◽  
Road Vehicle ◽  
Evaluation Standard ◽  
The Road ◽  
Metrological Performance

The measurement performance of road vehicle automatic weighing instrument installed on highways is directly related to the safety of roads and bridges. The fuzzy number indicates that the uncertain quantization problem has obvious advantages. By analyzing the factors affecting the metrological performance of the road vehicle automatic weighing instrument, combined with the fuzzy mathematics theory, the weight evaluation model of the dynamic performance evaluation of the road vehicle automatic weighing instrument is proposed. The factors of measurement performance are summarized and calculated, and the comprehensive evaluation standard of the metering performance of the weighing equipment is obtained, so as to realize the quantifiable analysis and evaluation of the metering performance of the dynamic road vehicle automatic weighing instrument in use, and provide data reference for adopting a more scientific measurement supervision method.

Methods of risk assessment in forecasting the consequences of accidents at pipeline transport facilities

2020 ◽  
Vol 10 (6) ◽  
pp. 663-673
Author(s):  
Vladislav N. Slepnev ◽  
◽  
Alexander F. Maksimenko ◽  
Elena V. Glebova ◽  
Alla Т. Volokhina ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Assessment Procedure ◽  
Expert Evaluation ◽  
Main Pipeline ◽  
Pipeline Transport ◽  
Forecasting Accuracy ◽  
Distribution Of Resources ◽  
Expert Evaluation Method

The choice of risk assessment procedure is one of the essential stages of efficient structuring of processes on prevention, localization and elimination of the consequences of accidents at main pipeline transport facilities. The authors analyzed themed publications and regulatory documents, governing procedures of risk assessment and forecasting of the consequences of possible accidents, and defined main problems in this area. Procedure for the risk assessment of accidents at main pipeline facilities was developed, the basis of which is the expert evaluation method. The procedure includes the determination of the main criteria for the assessment the probability of accident initiation and development and the evaluation of the severity of its consequences, an expert evaluation of criteria significance, their classification, and creation of a rating for hazardous pipeline sections. The application of the procedure application allows to specify the list of facilities that require high priority forecasting of accidents consequences, thus to optimize the distribution of resources and the overall increase of efficiency in planning while defining forces and special technical devices, necessary for containment and rectification of emergencies. Expert evaluation method application allows considering the specifics of certain enterprises, their technical and technological peculiarities, thereby increasing forecasting accuracy.

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