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Big Data Security and Privacy: A Review 被引量:3
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作者 MATTURDI Bardi ZHOU Xianwei +1 位作者 LI Shuai LIN Fuhong 《China Communications》 SCIE CSCD 2014年第A02期135-145,共11页
While Big Data gradually become a hot topic of research and business and has been everywhere used in many industries, Big Data security and privacy has been increasingly concerned. However, there is an obvious contrad... While Big Data gradually become a hot topic of research and business and has been everywhere used in many industries, Big Data security and privacy has been increasingly concerned. However, there is an obvious contradiction between Big Data security and privacy and the widespread use of Big Data. In this paper, we firstly reviewed the enormous benefits and challenges of security and privacy in Big Data. Then, we present some possible methods and techniques to ensure Big Data security and privacy. 展开更多
关键词 big data value of big data security and privacy
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A QoS Guarantee Service Serving Model in LEO Satellite Networks Based on Differential Game
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作者 LIU Qian ZHAO Ming LIN Fuhong 《China Communications》 SCIE CSCD 2014年第A02期128-134,共7页
Low Earth Orbit (LEO) satellites networks can provide multimedia service and plays an increasingly important role in the exploitation of space. However, one of the challenges in LEO satellites networks is that the s... Low Earth Orbit (LEO) satellites networks can provide multimedia service and plays an increasingly important role in the exploitation of space. However, one of the challenges in LEO satellites networks is that the services are suffered from high symbol error, limited storage space and limited available energy. To analyze the performance of the service in LEO satellites networks, a model, based on differential game, is proposed for satisfying the QoS requirements of multimedia applications. The controller of our model is the transmitting rate and the object is to maximize the payoff depending on the error symbol rate, the available energy, the bandwidth and the process ability so as to guarantee the QoS service. In order to solve our built model, we use the Bellman theorem to make formulas on the trance of the optimal transmitting rate. Furthermore, simulation results verify that the service can be maximized by using our derived transmitting rate trance. 展开更多
关键词 LEO satellite networks QOS differential game
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