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Visible light communication (VLC) can offload the increasingly heavy traffic in LTE network, improving the spectral and energy efficiency without introducing additional interference. However, developing a scalable load balancing scheme with less handover overheads becomes an issue. In this letter, leveraging the location-sensitive feature of VLC channel, we propose a mobility-aware load balancing...
Pedestrian segmentation in infrared images is a difficult problem for the defects of low SNR and inhomogeneous luminance distribution. In this paper, we propose a method which aims to obtain the accurate pedestrian segmentation through a background prior and boundary weight-based saliency. Background likelihood is firstly calculated as background prior to get an abstract representation for infrared...
In view of the current problems in credit evaluation systems provided by C2C E-commerce, this paper analyzes the three main aspects that influence the seller's credit, and then build a new seller credit evaluation index system. On the basis of this, a multi-index linguistic evaluation method based on linguistic assessment information is proposed using LWD operator and LOWA operator. Finally, an example...
This paper develops a recommended trust evaluation model in consideration with consumer purchasing preference in C2C e-commerce. Firstly, we analyze the three main aspects that influence the sellers' trust in C2C e-commerce from product, service and consumer, on the basis of this, a new seller trust evaluation index system is established. Then, the evaluation information given by consumers with the...
The regional eco-environment quality is the base of the sustainable development. This paper developed an eco-environmental vulnerability evaluation model using spatial principle component analysis (SPCA) and eco-environment vulnerability index method. This method was carried out in a case study of Hubei Province, China. The vulnerability was classified into six levels: potential, slight, light, medial,...
Soil erosion seriously threatens the ecological environment across the world, and much attention has also been devoted to this problem in recent years. The objective of this study was to assess soil erosion sensitivity under its environment background on large scale. Supported with GIS and remote sensing technologies, the relationship of soil erosion intensity status and its environment background...
Responsive transport protocols e.g. TCP, back-off on packet loss. This is because packet loss is by default treated as a sign of congestion. However losses in a wireless network may not only arise from congestion but also because of the inherent characteristics of the wireless medium. If a TCP source assumes a wireless loss as a loss due to congestion and reduces its transmission rate, it fails to...
In the scene simulation system of UAV, 3D imaging was generated by method -based DEM and massive orthograph that displayed real terrain. The imaging was very realistic. The system adopted the method of cutting down scene based on line of sight, image of cache based on frame and texture swapping, to enhance the speed of PC, and improve performance of the system, so real-time creating scene of massive...
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