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基于IC理念的高校图书馆多媒体服务实践——以中国人民大学图书馆为例 被引量:1
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作者 齐慧彬 《图书馆学刊》 2015年第8期5-7,共3页
传统的多媒体服务模式单一、服务环境简陋,当前迫切需要对多媒体服务进行重新思考和创新。以中国人民大学图书馆新馆多媒体服务共享空间的构建为例,阐述了基于IC理念的多媒体服务空间的布局;指出了新环境下多媒体服务具有学科化、特色... 传统的多媒体服务模式单一、服务环境简陋,当前迫切需要对多媒体服务进行重新思考和创新。以中国人民大学图书馆新馆多媒体服务共享空间的构建为例,阐述了基于IC理念的多媒体服务空间的布局;指出了新环境下多媒体服务具有学科化、特色化、专业化的新特点以及未来多媒体服务面临的挑战。 展开更多
关键词 IC 多媒体服务空间 多媒体服务
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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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