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Complexity Research of Railway Transport System

Author: LiuMingLi
Tutor: WangCiGuang
School: Southwest Jiaotong University
Course: Transportation Planning and Management
Keywords: Rail transport systems Complexity Research Entropy Inequality Uneven Uncoordinated
CLC: U292
Type: Master's thesis
Year: 2011
Downloads: 47
Quote: 1
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Abstract


From the perspective of complexity science to look at the railway transport system , it is a typical open complex giant system , this paper, this problem how reasonable measure of the complexity of the railway transport system as the research object , research-based theory , in Systems Science , entropy theory, complexity theory research based on a combination of quantitative and qualitative research , quantitative analysis of the main qualitative analysis , supplemented by the use of the system scientific thinking and systems engineering methods to analyze the complexity of the railway transport system is reflected proposed measure indicators , these indicators to some extent, able to respond to the complexity of the organization of transport , quantifiable results , to enable people to understand the system in the end complex and to what extent , reflect the specific circumstances of the complexity of the system , reasonable organization and management , to provide a basis for rail transport organizations . Specifically, the main contents are as follows : the proposed methods and procedures of the complexity metrics ; rail transport system complexity analysis ; railway transport system is an open complex giant system ; index system was established , with the richness of the inequality , the degree of uneven , uncoordinated level four indicators quantitative description of the complexity of the railway transport system . Pointed out that species diversity is a manifestation of complexity , with the concept of entropy theory and composition , with the richness of diversity in the rail transport system to measure , and measure the results were analyzed . (3) comply with the principle of the most complex due to the randomness of things , the assembly process of Railway Freight car group inter-arrival time with a certain degree of randomness , In this paper, the principle of the most complex theoretically proved negative exponential distribution for uncertainty The transport organizations optimization to provide theoretical support . Pointed out that inequality is a manifestation of complexity Gini coefficient measures inequality , with emphasis on the range inequality metrics and analysis . Pointed out that the uneven complexity of an expression to describe the rail transport imbalance , on the basis of previous studies on the train flow imbalance metrics and analysis . 6 pointed out that the lack of coordination is the complexity of a performance measure and analyze the marshalling yard degree of internal disharmony .

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CLC: > Transportation > Rail transport > Rail transport management projects > Organization of train
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