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Digital Rights Management:Model,Technology and Application 被引量:7
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作者 Zhaofeng Ma 《China Communications》 SCIE CSCD 2017年第6期156-167,共12页
with rapid achievement of current information technology and computing ability and applications,much more digital content such as films,cartoons,design drawings,office documents and software source codes are produced ... with rapid achievement of current information technology and computing ability and applications,much more digital content such as films,cartoons,design drawings,office documents and software source codes are produced in daily work,however to protect the content being copying,shared or deliberately stolen by inside or outside,digital rights management(DRM) became more and more important for digital content protection.In this paper,we studied various DRM model,technology and application,and first proposed DRM Security Infrastructure(DSI),in which we defined encryption,hash,signature algorithm,watermarking algorithms,authentication,usage control,trusted counter,conditional trace,secure payment,and based on the DSI we then proposed a whole classification approach and architecture of all kinds of DRMs,in which we proposed 6 typical classes of copyrights and content protection DRMs architecture:(1) Software-oriented DRM,(2) e Book-oriented DRM,(3) Video-oriented DRM,(4) Image-Oriented DRM(5) Unstructured data oriented DRM,(6) Text-oriented DRM.Based on the above DSI,we then proposed a dynamic DRM model selection method for various DRM application,which can be adapted dynamically for different technology of different applications,which can provide awhole solution for variant DRM development in a rapid and customized mode.The proposed DRM method,technology and application in this paper provided a common,flexible and extendable solution for variant DRM scenes,and can support rapid and customized development.Moreover,we proposed an opinion that the future life will enter into a new era that the content usage and consumption will not again adopt DRM technology rather than with law,liberty and morality. 展开更多
关键词 digital rights management drm security infrastructure ENCRYPTION WATERMARK usage control drm-free
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双互易杂交边界点法在结构模态分析中的应用
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作者 晏飞 苗雨 +1 位作者 谭飞 胡浩军 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第5期94-97,共4页
将双重互易法引入到杂交边界点方法中,将对非齐次项的域内积分转化成边界积分,形成双互易杂交边界点法.该方法将问题的解分为通解和特解两部分,通解使用杂交边界点法求解,特解利用局部径向基函数近似,从而实现了使用简单的静力问题基本... 将双重互易法引入到杂交边界点方法中,将对非齐次项的域内积分转化成边界积分,形成双互易杂交边界点法.该方法将问题的解分为通解和特解两部分,通解使用杂交边界点法求解,特解利用局部径向基函数近似,从而实现了使用简单的静力问题基本解来求解动力问题.数值算例表明,该方法精度较高、计算量小,是一种具有优良特性的边界型纯无网格方法,适合于求解各种结构动力问题. 展开更多
关键词 模态分析 杂交边界点法 双重互易法 特解 径向基插值 自由振动
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