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Increasing driving safety by virtue of advanced technology requires real-time and accurate detection of vehicles in far and close distance, which pose a threat to the host vehicle. This paper presents a real-time on-road vehicle detection algorithm based on monocular vision. First, auto-adapted threshold segmentation is proposed to extract shadow features. Then, a special mask is used for morphology...
Ownership structure is one of the most important factors in corporation governance system. This paper studies the impact of pyramid ownership on capital structure using the listed private companies as sample. The number of middle shareholders and deviation between Control right and Cash flow are positive related to Asset-liability ratio. Pyramid type of ownership structure of listed companies tends...
In order to learn the firms of motivation of cash dividend paid in specific industry, this paper investigates that some factors affecting the level of cash dividend in transportation industry listed companies in China. We find that firms in this industry keep two low debt ratio lead to paying higher level of cash dividend than their profitability.
The mapping camera must have very high precision in interior orientation elements and the convergence angle between each camera. Through optimum design in the optical system and optic-mechanical structure of the camera, the whole system achieves high precision and high stability. The calibration Precision also can meet the requirement of the measurement for system. So the whole system can meet the...
With the development of energy base in Ordos basin, the deficiency of groundwater becomes serious. Therefore, the hydrogeochemical evolution of groundwater is studied, which is in the Dusit-Yanchi watery system. Some results are obtained. The quality of groundwater in Dusit river system is better, and in the aquifer, the main water-rock action is the solution of gypsum, fluorite, and siderite, and...
3GPP LTE specification is stable now in release 8. To meet much higher requirements than release 8, 3GPP has initiated the LTE-A (LTE-Advanced) study item. In LTE-A, CoMP (coordinated multiple point transmission and reception) and CA (carrier aggregation) are two new features. CoMP is used to improve coverage and to increase cell-edge throughput. It is considered as an effective approach for ICIC...
Materialized view is a useful tool to cache data in data warehouse, data replication, data visualization and etc. However, view maintenance in peer data management systems (PDMSs) has received very little attention. In this paper, we propose a strategy to effectively maintain views in PDMSs. First, we present a hybrid peer architecture, in which peers prefer peer-to-peer architecture to super-peer...
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