Dissertation > Excellent graduate degree dissertation topics show

Modeling Evolutionary Network of Urban Subway Systems and Cascading Failure Over Urban Subway Systems

Author: ZhangZhiWei
Tutor: HanFang;RongZhiHai;YuanDongLiang
School: Donghua University
Course: Electronics and Communication Engineering
Keywords: Urban Subway System Complex Networks Evolution of Topology CascadingFailure Node Centrality
CLC: U239.5
Type: Master's thesis
Year: 2014
Downloads: 0
Quote: 0
Read: Download Dissertation

Abstract


In the process of modern city development, the urban traffic capacity has become one of important factors that restrict economic vitality. Therefore, many cities are building their subway systems, In the first part, we construct the evolution model of ten urban subway systems, analyze the evolution of main network properties with the development of subway system. Our investigations show that the average path and diameter of network increase sharply at first, then maintain a stable value with the formation of the core-branch structure of subway systems. We also analyze the relationship between degree and betweenness centrality (BC), find that there is a positive correlation between them. Whereas, there are some nodes stations with low degree having high BC, which are often located near the ring line and undertake more passenger flow. Furthermore, our results show that the formation of local loop leads some stations reduce their BC with the development, which indicates that local topology is improved as the evolution of subway system. Finally, we analyze the distribution of loops, find that55%of edges don’t belong to a loop.In the second part, we analyze the features of cascading failure process in the subway systems and provide valuable suggestions for the construction and protection of subway systems. Based on the complex network theory, we analyze the node centrality using different methods, such as BC and Degree, then discuss the subway systems’ performance under random failures and intentional attacks respectively, our investigations show that the robustness under random failures is better than that under intentional attacks, as that in the scale-free networks. We also shows that the robustness sometimes becomes worse as the tolerance parameter a increases. To interpret the reason, we analysis the cascading failure process. At last, we give several suggestions, which help us to improve the robustness of the subway systems.In the last part, based on nodes’ BC and position, we propose an indicator of centrality and compare it with BC and Degree. The results show that position information should be taken into account.

Related Dissertations

  1. Research on Detecting Complex Network Community Structure,O157.5
  2. Analysis of AS-level Topology under Skitter and Ark Measurement Infrastructure and Dynamic Coreness Model,TP393.02
  3. A Study of Community Detection Algorithms in Complex Networks,TP301.6
  4. Research on Modeling Product Network and Characteristics for Enterprise Cluster,F273.2;F224
  5. Ruin Probability for Risk Model under Stochastic Environment & Stochastic Process in Complex Networks,F840
  6. Research on Knowledge Management and Knowledge Modularization in Manufacturing Enterprise,F425
  7. Node Importance Evaluation and Its Application Research in Complex Networks,O157.5
  8. Study on Reliability of Railway Network Based on Complex Network Theory,U212.1
  9. Phase Transitions of the Anisotropic Ashkin-Teller Model on Complex Networks,O414.13
  10. Community Extraction Algorithm in Complex Networks Based on Local Clustering,O157.5
  11. Research on Community Model and Structure of Complex Networks,C912.6
  12. Based on the theory of complex networks of e-mail network,TP393.098
  13. Research on Efficiency of Knowledge Transfer Based on Knowledge Network Structure,F272
  14. Study on Article Exchange Model and Its Applications to Biological Regulation Networks,Q811.4
  15. Risky to predict a complex network model of infectious diseases,O242.1
  16. The Supply Chain Network Modeling Based on Complex Network and Its Robutness Analysis,F274
  17. RSP model complex networks of adaptive dynamics,O157.5
  18. Scientific Journal Citation Analysis of Application Based on Complex Network,G353.1
  19. Types of network model and the routing algorithm,TP393.02
  20. Research on the Evolution of Complex Networks of Bohai Sea Port Transportation,U691
  21. Study on Stability of Complex Networks Based on Evolutionary Dynamics,O157.5

CLC: > Transportation > Rail transport > Special railway > Urban railway, suburban railway
© 2012 www.DissertationTopic.Net  Mobile