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Service industry productivities of eleven major cities in Hebei province are deeply analyzed in terms of related statistic data in 2008 abased on DEA method in this paper. The returns to scale and input surplus are also studied and the reasons of comparatively low efficiency for some cities are provided for improving service industry competitiveness of Hebei Province and optimizing industrial structure...
The Factor analysis method was applied to research the traffic flow on urban road with the field data of arterial on North city in the period of snow. And the traffic status was divided into three types by clustering the factor score. By clustering the frequency of the traffic status, the types of traffic status of different pavement can provide the theoretical foundation of identification of traffic...
This paper tackles the problem of vehicle's geo-localisation in urban areas. For this purpose, global positioning system (GPS) receiver is the main sensor. But the use of GPS alone is not sufficient in many urban environments. GPS has so to be helped with dead-reckoned sensors, map data, cameras, range finder ... In this paper, we propose a novel approach to compute observation of the absolute pose...
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