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Twenty-first century as an important symbol of the era of the knowledge economy and big data, Internet and networking have a rapid development and have become indispensable data sources in people's lives. Besides, because of its convenience and quickness, these are increasingly applied in more and more aspects. Among them, POI as a true representative of the geographical entity on the network map...
A quantitative evaluation and analysis method has been proposed for partially diagnosable discrete event systems. It is based on the fault model which is depicted as a tree structure in this paper. Two quantitative indicators as diagnosable degree and diagnosable depth have been introduced to evaluate the diagnosability of systems on aspects of diagnosable fault coverage range and diagnosis precision...
Because of the shortcomings such as intensive labors, low accuracy data, and no-timely information of the manual survey methods for collecting dynamic origin-destinations, a method for expanding dynamic origin-destination data based on mobile phone locations from samples to collectivities is designed according to the status with a large number of users and advanced location technology on mobile phone,...
This paper collected soil samples on provincial highway of Qiting of Yixing City at the leeward of the wind to study the space diversity condition of soil heavy metal pollution at the side of the road traffic under the influence of traffic. The results shows that: (1) Contents of Pb and Cu in the farmland soil on both sides of transport road existed accumulative phenomena and they were affected by...
The rationality of the existing toll standard is analyzed empirically, considering psychological tolerance of residents to freeway toll standard, the changes in transportation demand characteristics before and after toll standard changed as well as the relationship between the transportation volume and transportation distance and gross domestic product (GDP) and industrial structure. The research...
Based on computer vision principle and digital image differential detecting technology, we present a real-time method of vehicle's speed detection. First, calibrate parameters of camera, capture digital signal of images and take pre-processing on images. Then, select background image and set linear projection of speed. Finally, detect the moment of passing the linear projection of speed, and compute...
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