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Research of the Express Network System Based on GIS

Author: ZhangShengRun
Tutor: XuWeiXiang
School: Beijing Jiaotong University
Course: Systems Engineering
Keywords: Geographic Information Systems Courier system Network Shortest Path Multithreading
CLC: TP319
Type: Master's thesis
Year: 2009
Downloads: 523
Quote: 3
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Abstract


With the continuous development of China's society and economy, the courier industry as an emerging industry show vigor, the rapid development of various types of courier companies in the courier field. Market increasingly competitive international express giants have vied for the Chinese market, regardless of the dominant position of China Post EMS or private courier companies are facing a severe test. Express delivery companies how to survive in this incentive \Cost control and quality of service to enhance important factors affect the development of the courier companies, this article by the courier network building and path optimization to achieve lower costs. This paper describes the applications and the need for GIS in the courier network construction, GIS-based the courier network analysis system is an important means of visual network analysis, by this means, so that the results of the network analysis more intuitive, accurate. On the basis of research on geospatial data topology relationship of the three major network mode, that little bit of direct transit and Hub mode analysis and comparison, and courier network layout and optimization discussed. Current network computing has been a considerable development of its more mature Algorithm. The article discusses the strategy of the search of the shortest path algorithm, how to introduce multi-threaded approach to improve the algorithm speed, at the same time to explore how to manage and deal with multi-threaded. The main idea of ??the algorithm to improve thread alternative recursive algorithm, thereby enhancing the concurrent algorithm to reduce the traversal time of the algorithm, but this replacement will result in a large number of threads to produce thread suspend and wake-up control is very important, through the feedback value to achieve multi-threaded reasonable dispatch, in order to achieve the stability of the system. The last case, the Post Express, for example, the feasibility of the implementation of its network architecture, hybrid network model, the choice of network nodes, the transport network construction more detailed argument. Automatically connect using GIS programming techniques to complete the network point of intersection, and error handling, as well as sections automatically scission technology, in order to achieve the courier network topology automatically created. The paper by means of GIS secondary development tools MapinfoMapX and the VB programming, improved shortest path algorithm. The development of the system not only to select the network path through the conversion of the parameters can also be minimized choose courier costs and delivery time. And can be controlled through the fast path to choose not only can improve the speed of response to customer service, courier costs.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Specific applications
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