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In recent years, accidents of urban road collapsing occur frequently, which not only cause considerable economic losses, but also the casualties. For the various problems and potential security risks brought by urban road collapsing, this paper analyzes the factors of urban road collapsing and a new warning method based on dynamic tracking is put forward. And a warning model of hazard grade of urban...
The change of buildings is one of the most valuable information in the monitoring of land use for urban areas. Change detection technique based on multitemporal remote sensing image is an effective approach to obtain information of feature change. However, with the continuous improvement of resolution in remote sensing image, conventional change detection methods have much difficulty in exactly extracting...
This paper presents the development of a new multi-channel ground penetrating radar (GPR) for Roadbed Disease inspections. Comparing with many existing pavement GPRs of limited survey efficiency, our system have strong joint positioning capability by implementing joint positioning and video system, as well as the customized designed cart-loading units guarantees the operating capability at regular...
Content-based image retrieval often uses the integration of various features. The characteristic dimensions are up to hundreds of dimensions. The capabilities for image representation", "storage", " management far exceed that of the database. Retrieval and matching of large-scale image are the urgent problems which need to be solved. To solve the construction of image indexing...
This paper develops performance evaluation and competition strategy techniques in Olympics scenario. In the performance evaluation technique, the ranking methods based on the best and worst frontiers are used. In the competition strategy, a competition DEA method is presented to direct the competition opponents and intensity for each Olympics participant.
For the diversity of the index system, papers propose the concept of absolute equivalence based on the idea of attribute reduction in rough set theory; then the definition of the lambda-equivalence between two index systems which have inclusion relation is given by the fuzzy cluster analysis method. A discriminance is given, and finally a case study.
The ship manoeuvring simulator has been widely developed and application in many navigation academies, science and study organizations and maritime training centers etc with development of the navigation technology, computer applications, computer graphics etc. However, It has a lot of shortcoming in assessing skill of the navigators when they are manoeuvring the ship by the simulator. In order to...
A model of back_propagation artificial neural network based on Levenberg_Marquardt algorithm for determining the relations between the structure of alcohols and their chromatographic retention indix has been set by means of topological indices. The forecasting results are good when it makes use of the BP neural network to carry out the forecasting, the correlation coefficient has reached 0.999. Therefore,the...
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