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Comprehensive Analysis of Caching Performance under Probabilistic Traffic Patterns for Content Centric Networking

China Communications 2016年第3期13卷 127-136页

作者： dabin kim Young-Bae Ko Sung-Hwa Lim Department of Computer Engineering Graduate School of Ajou University Department of Multimedia Namseoul University

The phenomenon of data explosion represents a severe challenge for the upcoming big data ***,the current Internet architecture is insufficient for dealing with a huge amount of traffic owing to an increase in redundant content transmission and the end-point-based communication ***-centric networking(ICN)is a paradigm for the future Internet that can be utilized to resolve the data explosion *** this paper,we focus on content-centric networking(CCN),one of the key candidate ICN *** has been studied in various network environments with the aim of relieving network and server burden,especially in name-based forwarding and in-network caching *** paper studies the effect of several caching strategies in the CCN domain from the perspective of network and server ***,we comprehensively analyze the in-network caching performance of CCN under several popular cache replication methods(i.e.,cache placement).We evaluate the performance with respect to wellknown Internet traffic patterns that follow certain probabilistic distributions,such as the Zipf/Mandelbrot–Zipf distributions,and *** the experiments,we developed an OPNET-based CCN simulator with a realistic Internet-like topology.

关键词： content-centric networking probabilistic Internet traffic patterns caching performance analysis OPNET

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Copper telluride with manipulated carrier concentrations for high-performance solid-state thermoelectrics

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Journal of Materials Science & Technology 2022年第34期129卷 190-195页

作者： Hyun Ju dabin Park Minsu kim Jooheon kim G.W.Woodruff School of Mechanical Engineering Georgia Institute of TechnologyAtlantaGA 30332USA School of Chemical Engineering&Materials Science Chung-Ang UniversitySeoul 06974Republic of Korea Department of Intelligent Energy and Industry Graduate SchoolChung-Ang UniversitySeoul 06974Republic of Korea Department of Advance Materials Engineering Chung-Ang UniversityAnseong 17546Republic of Korea

This study proposed a strategy for effectively diminishing the carrier concentration in Cu_(2)Te by introducing graphene sheets,Based on thermoelectric property measurements and single parabolic band modeling,the incorporated graphene effectively reduced the carrier concentration,not only enhancing the thermoelectric performance of the Cu_(2)Te/graphene composite but also substantially improving its figure of merit up to ~1.47 at 1000 K,which is 268% higher than that of pristine Cu_(2)Te,This study gives an insight into the control of carrier concentration and thermoelectric properties in Cu_(2)Te,and it could be extended to other copper chalcogenides for excellent thermoelectrics.

关键词： Thermoelectric Copper telluride Graphene Carrier concentration Single parabolic band model

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