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Sequences of mcyJ gene of 62 Microcystis strains from different locality, and one Anabaena strain, two Planktothrix agardhii strains were analyzed. The phylogenetic tree of mcyJ was constructed. The result showed that the variation of mcyJ genotype in Microcystis had no relationship with its locality or species; genetic distance of mcyJ between Microcystis and Anabaena, Planktothrix agardhii was obvious...
High-quality real-time traffic information is essential for navigation client to provide good services, but based on our field test results, it is found that at present real-time traffic information in China is not satisfying enough. Therefore, to improve the accuracy of navigation services, it is necessary for client to process low-quality traffic data by itself. This paper introduces a method to...
Conventional navigation systems usually calculate routes based on costs of each road link, which may be length, speed limit, width, real-time traffic condition, etc. Therefore the routes planned by current navigation system may be shortest distance route, shortest time route, expressway used route, etc. However, due to inaccurate or delayed information, the calculated routes are not always satisfying...
Analysis of congestion points is an important topic for traffic management. With the rapid development of ITS, probe car data can be obtained in more and more cities. This paper introduces a method for analyzing recurrent congestion points based on historical probe car data, and proposes evaluation models for recurrent congestion points. By using this method, recurrent congestion points in Beijing...
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