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On the basis of communication process a Stochastic Petri Net (SPN) model is constructed to analyze the performance of Wireless Sensor Networks (WSNs). The effects of arrival rate, data packet number, sink node's buffer size on average time delay, throughput and the utilization of the sink node buffer are also analyzed by solving the linear equations from(More)
The widespread application of P2P file sharing brings about some critical problems, such as security, piracy and intellectual property. In order to protect the intellectual property rights of radio film and television resources, in this paper, under the environment of China Next Generation Internet (CNGI), a PCADRM (P2P-based Content Access Digital Rights(More)
According to the visual characteristics of the human eye perception, a no-reference(NR) stereoscopic image quality assessment(SIQA) method is proposed based on contourlet transform, which considered from the quality of the viewpoint images and the depth perception. Firstly, the subband energy of the left and right viewpoint images is extracted as viewpoints(More)
With the development of science and technology, more people especially young teenagers do not want to pay more attention to traditional TV programs. Nowadays the challenge of traditional TV station is how to attract the audience's attention, so as to improve the audience rating of tradition TV programs. This paper proposes a recommendation system, which can(More)
With the development of the Internet and social networking service, the micro-video is becoming more popular, especially for youngers. However, for many users, they spend a lot of time to get their favorite micro-videos from amounts videos on the Internet; for the micro-video producers, they do not know what kinds of viewers like their products. Therefore,(More)
In this paper, the performance of HTTP protocol and FTP Protocol is analyzed by using OPNET-based simulation. Firstly, related scenarios are modeled with OPNET Simulator. Furthermore, two case studies are conducted by choosing average queuing delay and TCP delay as performance indices respectively. In the case of HTTP protocol's performance, the changing(More)