Comprehensive Evaluation for the Traffic Safety of the Expressway Based on Quantitative Analysis

2007 ◽  
Author(s):  
Qizhou Hu ◽  
Wei Deng
Keyword(s):  
Quantitative Analysis ◽  
Traffic Safety ◽  
Comprehensive Evaluation

scholarly journals Quantitative Analysis of Comprehensive Influence of Music Network Based on Logistic Regression and Bidirectional Clustering

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Yi-Kun Zhao ◽  
Guo-Qing Wang ◽  
Xiao-Xiao Zhan ◽  
Peng-Hui Yang
Keyword(s):  
Logistic Regression ◽  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Dynamic Network ◽  
Measurement Model ◽  
Music Similarity ◽  
Pagerank Algorithm ◽  
Change Factors ◽  
Cluster Analysis Method ◽  
The Impact

This paper makes a quantitative analysis of the comprehensive influence of music networks. Firstly, 11 music features are selected from energy, popularity, and other aspects to build a comprehensive evaluation index of music influence, and the PageRank algorithm is used to quantify the music influence. Secondly, the multiobjective logistic regression is used to construct the music similarity measurement model and, combined with music influence and music similarity, to judge whether the influence of different musicians is the actual influence. Thirdly, the influence and similarity of the same music genre and different music genres are analyzed by using the two-way cluster analysis method. Finally, the lasso region is used for feature selection to obtain the change factors in the process of music evolution and analyze the dynamic changes in the process of music development. Therefore, this paper uses network science to build a dynamic network to analyze the similarity of music, the evolution process, and the impact of music on culture, which has certain research significance and practical value in the fields of music, history, social science, and practice.

AHP to Appraise the Traffic Safety of the Express Way

2011 ◽  
Vol 48-49 ◽  
pp. 157-163
Author(s):  
Dan Yu ◽  
Yi Hu Wu ◽  
Zhi Xiang Hou ◽  
Wen Jun Liu ◽  
Ji Guang Zhang
Keyword(s):  
Traffic Safety ◽  
Road Safety ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Safety Evaluation ◽  
Evaluation Index System ◽  
The Road ◽  
Comprehensive Evaluation Model ◽  
The Impact ◽  
Fuzzy Interval

The internal structure of the road safety system is extremely complex and it is affected by a lot of factors, each factor weights can not be fully established. In this article, we expressed the attribute value with a fuzzy interval number, the comprehensive appraise to the impact of traffic safety with emphasis on "people", "car" "road" in the "road". First of all, establishing evaluation index system, and form the judging matrix by AHP; then, it can be acquired a method of traffic safety evaluation by using the comprehensive evaluation model of the fuzzy interval.

Metro Operation Safety Evaluation

2014 ◽  
Vol 505-506 ◽  
pp. 467-470
Author(s):  
Li Yun Wei ◽  
Yong Bo Lv ◽  
Yuan Ren
Keyword(s):  
Traffic Safety ◽  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Weak Link ◽  
Management Strategies ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Comprehensive Evaluation Method ◽  
Urban Rail

In order to evaluate urban rail traffic safety performance comprehensively and to find the weak link to strengthen management, this article, it used the secondary fuzzy comprehensive evaluation method for safety assessment. the qualitative analysis was done to emphasis the structure importance and management strategies are put forward based on the results.

Evaluation of Highway Traffic Safety Facilities Based on Set Pair Analysis

2015 ◽  
Vol 730 ◽  
pp. 73-76
Author(s):  
Yao Wu ◽  
Jian Lu ◽  
Wan Qiu Zhu ◽  
Hong Tong Qiu
Keyword(s):  
Traffic Safety ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Set Pair Analysis ◽  
Highway Traffic ◽  
Freeway Traffic ◽  
Connection Degree ◽  
Pair Analysis

In order to make a reasonable evaluation of highway traffic safety facilities, a comprehensive evaluation method based on set pair analysis was proposed. An evaluation system of freeway traffic safety facilities was established. Combined with relevant norms and standards, each indicator in the evaluation system was divided and a reasonable threshold has been set. Through the calculation of the connection degree of ‘identicalness, differentness and reverse’, the maximum connection degree criterion was used to judge the evaluation results of freeway traffic safety facilities. Finally a case study was conducted to verify the proposed evaluation method. The case study shows that the selected highway traffic safety facilities are at a good level and this method can provide scientific decision basis for highway traffic facility renovation.

Optimization Research on Spares Supply for some Equipment Based on Fuzzy Comprehensive Evaluation

2012 ◽  
Vol 468-471 ◽  
pp. 2364-2369
Author(s):  
Qing Li ◽  
Wei Yang ◽  
Peng Hui Rong
Keyword(s):  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Scientific Management ◽  
Complicated Structure ◽  
Evaluation Matrix

Because of large equipment with complicated structure, many kinds of components and tough management, various factors which impacting the equipment exerting its effectiveness level and techniques of handling for their quantification are discussed and the consumed law is studied aiming at fully exerting the equipment’s effectiveness. The fuzzy matrixes are determined and the comprehensive evaluation matrix calculated by the theory and methods of fuzzy comprehensive evaluation. Based on the results from quantitative analysis, the spares’ importance in the process of management and supply is made certain. It provides basis for the spares’ scientific management and supply.

Study on the Maintenance Capacity of “Man-Machine System” Based on Fuzzy Comprehensive Evaluation

2012 ◽  
Vol 203 ◽  
pp. 479-483
Author(s):  
Yong Jun Sun ◽  
Yi Qu
Keyword(s):  
Complex System ◽  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Mathematics ◽  
Machine System ◽  
The Core ◽  
Evaluation Algorithm ◽  
The Stability ◽  
Index Weight

This paper, in accordance with the maintenance capacity of “Man-Machine System”, holds the core of the “Man-Machine System” and employs the analysis methods of the complex system, brings forward the model of the three-layer comprehensive evaluation based on fuzzy mathematics, then brings out the methods of the index weight and studies the maintenance capacity’s evaluation algorithm on the foundation of the quantitative analysis. In the last it gives the application of the model and algorithm by using the instances and studies the changing maintenance capacity including the stability and the undulation, which provides one thought for scientifically evaluating the maintenance capacity of “Man-Machine System”.

scholarly journals Method for Calculating Safety Features of Railway Automation Devices

2020 ◽  
Vol 18 (3) ◽  
pp. 164-173
Author(s):  
K. A. Bochkov ◽  
D. V. Komnatniy
Keyword(s):  
Risk Assessment ◽  
Probability Theory ◽  
Quantitative Analysis ◽  
Control Systems ◽  
Traffic Safety ◽  
Automation Systems ◽  
Event Trees ◽  
The Subject ◽  
Safety Features ◽  
Safety Systems

The problem of quantitative analysis of safety of microelectronic and microprocessor systems of railway automation and telemechanics is considered. The problem remains relevant, since the subject of safety analysis is rarely occurring, but extremely dangerous events. The risk and significance of failure are selected as the main safety features of these systems. The way to identify a failure was chosen according to MILSTD‑1629A standard, as the most adequate.Calculated expressions for significance of a failure are proposed. The probability of a dangerous failure is calculated by the method of model analysis. It is proposed to calculate the probability of a failure further developing into an accident using scenario analysis methods by constructing event trees. Calculated ratios for ratings of violations are suggested, allowing to compare dangerous failures and emergency sequences developed from a failure. The risk assessment of operation of railway automation systems was selected not related to economic categories, and thus convenient for rationing. It is based on probabilistic concepts of the nature of risk and is calculated using the methods of probability theory. The developed design ratios and models make it possible to analyze performance of the functions of train traffic safety systems by methods common to control systems, at the same time reflecting the features of operation of railway automation.

scholarly journals Comprehensive Evaluation of Parameters Affecting One-Step Method for Quantitative Analysis of Fatty Acids in Meat

Metabolites ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 189 ◽  
Author(s):  
Michael P. Agnew ◽  
Cameron R. Craigie ◽  
Gayani Weralupitiya ◽  
Marlon M. Reis ◽  
Patricia L. Johnson ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Acid Catalyst ◽  
Effect Of Temperature ◽  
Reaction Yield ◽  
Step Method ◽  
Freeze Dried ◽  
One Step ◽  
Meat Samples

Despite various direct transmethylation methods having been published and applied to analysis of meat fatty acid (FA) composition, there are still conflicting ideas about the best method for overcoming all the difficulties posed by analysis of complex mixtures of FA in meat. This study performed a systematic investigation of factors affecting a one-step method for quantitative analysis of fatty acids in freeze-dried animal tissue. Approximately 280 reactions, selected using factorial design, were performed to investigate the effect of temperature, reaction time, acid concentration, solvent volume, sample weight and sample moisture. The reaction yield for different types of fatty acids, including saturated, unsaturated (cis, trans and conjugated) and long-chain polyunsaturated fatty acids was determined. The optimised condition for one-step transmethylation was attained with four millilitres 5% sulfuric acid in methanol (as acid catalyst), four millilitres toluene (as co-solvent), 300 mg of freeze-dried meat and incubation at 70 °C for 2 h, with interim mixing by inversion at 30, 60 and 90 min for 15 s. The optimised condition was applied to meat samples from different species, covering a broad range of fat content and offers a simplified and reliable method for analysis of fatty acids from meat samples.

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