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Rendezvous is a fundamental operation in cognitive radio networks (CRNs) for establishing a communication link on a commonly-available channel between cognitive users. The existing works on rendezvous implicitly assume that each cognitive user is equipped with one radio (i.e., one wireless transceiver). As the cost of wireless transceivers is dropping, this feature can be exploited to significantly...
Detection of the organic pollutants in wastewater based on spectroscopy is important for water environment protection. And it is significant for researchers to improve the prediction precision of water spectral analysis model. Based on the ultraviolet absorption spectrum and the fluorescence spectrum, four common approaches in spectral analysis, such as Least Squares, Principal Component Regression,...
The MSR (Multi-Scale Retinex) image enhancement algorithm can produce best performance in most cases, but the computation load is very huge especially for large image. In this paper, an efficient approach is proposed to accelerate MSR image enhancement speed on GPU via CUDA (Compute Unified Device Architecture). Time consuming modules such as multi-scale Gaussian filter, logarithmic domain differencing...
Many studies on Double-Deck Elevator Systems (DDES) have been done for exploring more efficient algorithms to improve the system transportation capacity, especially in a heavy traffic mode. The main idea of these algorithms is to decrease the number of stops during a round trip by grouping the passengers with the same destination as much as possible. Unlike what occurs in this mode, where all cages...
Network risk assessment is an important method to monitor and forecast the security status of the network. The risk calculation is the key step and the result is the direct reference of the risk assessment. This paper prompts a service-based risk quantitative calculation method - SRQC of NGN. SRQC method includes a service-based layered risk calculation model, the quantitative process of assets, vulnerabilities...
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