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YAO Zhi-gang, ZHOU Wei, WANG Yuan-qing. Fractal features of size-distributions of truck transportation hubs in China[J]. Journal of Traffic and Transportation Engineering, 2009, 9(4): 56-60. doi: 10.19818/j.cnki.1671-1637.2009.04.011
Citation: YAO Zhi-gang, ZHOU Wei, WANG Yuan-qing. Fractal features of size-distributions of truck transportation hubs in China[J]. Journal of Traffic and Transportation Engineering, 2009, 9(4): 56-60. doi: 10.19818/j.cnki.1671-1637.2009.04.011
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Fractal features of size-distributions of truck transportation hubs in China

doi: 10.19818/j.cnki.1671-1637.2009.04.011
  • 1.

    School of Economics and Management, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

  • 3.

    Research Institute of Highway of Ministry of Transport, Beijing 100088, China

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  • Author Bio:

    YAO Zhi-gang(1974-), male, lecturer, PhD, +86-29-82334506, zhgyao@163.com

  • Received Date: 2008-12-25
  • Publish Date: 2009-08-25
    Abstract
  • In order to quantitatively evaluate the system topology of Chinese truck transportation hubs in recent years, highway freight volume was regarded as a size index of truck transportation hub.A novel formula for exactly calculating the fractal dimension of size-distribution of the truck transportation hub was presented.The fractal dimensions of size-distributions of 200 largest truck transportation hubs during 1997~2007 were calculated by the formula based on the statistical data of highway freight volumes.Computation result shows that the size-distributions of truck transportation hubs during 1997~1999 are bi-fractal, while that are single fractal and the fractal dimensions are between 1.464 6 and 1.570 1 during 2000~2007, and the size-distribution of truck transportation hub system is adapted to city system.The evolvement of the fractal topology from bi-fractal to single fractal indicates a rational evolutionary progress of size-distributions of truck transportation hubs, and large truck transportation hubs should be supported to optimize the structure of truck transportation hub system.

     

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