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IEEE International SOC Conference

作者： Shunbin Li Peng Liu Weidong Wang Xing Fang Dong Wu Xianghui Xie College of Information Science and Electronic Engineering Zhejiang University Hangzhou China State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi China

PAM-4 signaling is an effective solution for high-speed CMOS serial-link transceivers, but it suffers from the difficulty of signal regeneration in analog front-end owning to its multi-level characteristics. An adaptive analog equalizer with decoupling control loops is proposed to address the nonlinearity of amplifiers. A low-frequency gain invariant equalizer and a golden signal generator are designed to serve boost and swing control loops, respectively. An integrating charge pump is employed to improve the convergence performance of receiver. Transistor-level simulation results show that the proposed adaptive analog equalizer in 40-nm CMOS technology can recover 25 Gb/s random data transmitted over a 29.8 inches Megtron6 printed circuit board (PCB) copper channel.

关键词： Equalizers Voltage control Signal generators Receivers Charge pumps Limiting Resistance

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QUANTUM COLLISION SEARCH ALGORITHM AGAINST NEW FORK-256

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Journal of Electronics(China) 2014年第4期31卷 366-370页

作者： Du Fangwei Wang Hong Ma Zhi State Key Laboratory of Mathematical Engineering and Advanced Computing

In order to improve the attack efficiency of the New FORK-256 function, an algorithm based on Grover's quantum search algorithm and birthday attack is proposed. In this algorithm, finding a collision for arbitrary hash function only needs O(2m/3) expected evaluations, where m is the size of hash space value. It is proved that the algorithm can obviously improve the attack efficiency for only needing O(2 74.7) expected evaluations, and this is more efficient than any known classical algorithm, and the consumed space of the algorithm equals the evaluation.

关键词： Quantum computation Quantum collision Grover＇s search algorithm New FORK-256CLC number：TN918.1

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Exploiting historical diffusion data to maximize information spread in social networks

International Journal of Database Theory and Application

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International Journal of Database Theory and Application 2015年第2期8卷 193-204页

作者： Zhou, Donghao Han, Wenbao Wang, Yongjun College of Computers National University of Defense Technology Changsha China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China China

Information spread maximization is to find a small subset of nodes in social network such that they can maximize the expected spread of information. In this paper, we attempt harnessing historical information cascades data to learn how information propagates in social networks and how to maximize its spread. In particular, we proposed a voting algorithm to learn diffusion probabilities of edges from cascades data. Then a pruning method is developed to remove trivial edges whose weights are smaller than a threshold. Moreover, motivated by the social influence locality, we propose a Local Influence Model to evaluate node's influence within a local area instead of the whole network, which can effectively reduce the computational complexity. Based on Local Influence Model, we use greedy algorithm to find an approximate optimal solution. Experimental results show that our method significantly outperforms state-of-the-art models both in terms of information spread and algorithm runtime. © 2015 SERSC.

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Localization Extension of COSMIC-FFP Method on Complex Algorithms

Localization Extension of COSMIC-FFP Method on Complex Algor...

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2015 6th IEEE International Conference on Software engineering and Service Science(ICSESS 2015)

作者： Yuan Zeng Haidong Yang Haiyong Chen State Key Laboratory of Mathematical Engineering and Advanced Computing Department of Cyber Space SecurityInformation Engineering University Southwest Research Institute of Electronic and Telecommunication Technology

Functional size measurement is an important feature property of software metrics. As the core of software, algorithms are difficult to estimate due to different technologic methods and processing flows. This paper establishes the localization extension measurement principles on COS MIC-FFP FPA for complex algorithms and proposes function recognition principles, data group recognition principles and measurement steps. The paper also analyses the influence of complex data on software metrics. Measurement results of algorithms written by different languages in signal processing, characteristic pick-up and location tracking has indicated that the localization extension method excels standard method.

关键词： Software Metrics Software Functional Size COSMIC-FFP Algorithms Size Function Point Analysis Functional Process

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Research on Stream Cipher Model Based on Chaos Theory

Research on Stream Cipher Model Based on Chaos Theory

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第四届智能结构与振动控制国际会议

作者： Sun Wenjie State Key Laboratory of Mathematical Engineering and Advanced Computing

ISBN: (纸本)9783038350507

Chaos is a similar and random process which is very sensitive to initial value in deterministic *** is a performance of nonlinear dynamical system with built-in *** with the advantages and disadvantages of the present chaos encryption model,the paper proposes a chaotic stream cipher model based on chaos theory,which not only overcomes finite precision effect,but also improves the randomness of chaotic system and output *** Sequence cycle theory generated by the algorithm can reach more than 10600 at least,which completely satisfies the actual application requirements of stream cipher system.

关键词： Chaos Theory,Stream Cipher,Algorithm

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AAA Based on 802.1x Authentication

AAA Based on 802.1x Authentication

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2015 Joint International Mechanical,Electronic and Information Technology Conference(JIMET 2015)

作者： Jiange Zhang Yuanbo Guo Yue Chen Jun Ma State Key Laboratory of Mathematical Engineering and Advanced Computing China National Digital Switching System Engineering and Technological Research CenterZhengzhou Information Science and Technology Institute

ISBN: (纸本)9781510817982

It has obvious advantage to adopt 802.1x authentication for network access control, which is an ideal and low-cost scheme and is usually used for those enterprises and campuses which run and manage simply or have simple business. This paper analyzed 802.1x protocol, EAP protocol and RADIUS protocol, configured switch, Free RADIUS Server and My SQL, constructed AAA management framework which is based on 802.1x authentication at the end, and showed the whole authentication flow. Using software the messages of the whole authentication process have been captured. The brief analysis of these messages provides technology strongly for particular research and further improvement, and has important value for research and application.

关键词： 802.1x authentication EAP protocol RADIUS protocol configure analysis of these messages

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Research of AAA messages Based on 802.1x Authentication

Research of AAA messages Based on 802.1x Authentication

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2015 IEEE advanced Information Technology,Electronic and Automation Control Conference(IAEAC 2015)

ISBN: (纸本)9781479919819

It has obvious advantage to adopt 802.1x authentication for network access *** paper analyzes802.1x protocol,EAP protocol and RADIUS protocol,and constructs AAA which is based on 802.1x authentication at the *** software the messages of the whole authentication process have been *** to AAA mechanism it analyzes EAP messages and RADIUS messages *** analysis of these messages provides technology strongly for particular research and further improvement,and it has important value for research and application.

关键词： 802.1x authentication EAP protocol RADIUS protocol AAA analysis of these messages

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Thread ID based power reduction mechanism for multi-thread shared set-associative caches

Thread ID based power reduction mechanism for multi-thread s...

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International Green computing Conference

作者： Wenming Li Lingjun Fan Zihou Wang Xiaochun Ye Da Wang Hao Zhang Liang Zhang Dongrui Fan Xianghui Xie ICT SKL of Computer Architecture Beijing China CNCERT/CC Beijing China State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi China

In this paper, we propose a brand-new cache power reduction mechanism, Thread ID Cache (TID Cache), aiming to reduce dynamic power consumption of set-associative caches shared by multiple threads. TID tables are implemented at different levels of cache hierarchy to record thread IDs. When a thread accesses a cache way, the thread ID is updated to the corresponding entry in TID table. When the same thread accesses cache again, irrelevant ways owned by other threads can be avoided being accessed through comparing thread IDs in TID table. Experiments are conducted on TID Cache with the configuration of a 32KB 8-way L1 cache and a 128KB 8-way L2 cache. The results reveal that, when caches are shared by 16 threads, the proposed TID cache achieves 34% dynamic power reduction of L1 and 36% of L2 under the CloudSuite benchmarks, and the corresponding results are 42% of L1 and 48% of L2 under the SPLASH-2 benchmarks. Accordingly, the same proportion of dynamic power can be saved at the price of less than 0.8% area overhead of cache data arrays.

关键词： Benchmark testing Cloud computing Lead Chlorine Oceans Reduced instruction set computing

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Radiative Cooling of the Thermally Isolated System in KAGRA Gravitational Wave Telescope

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Journal of Physics: Conference Series 2021年第1期1857卷

作者： T. Akutsu M. Ando K. Arai Y. Arai S. Araki A. Araya N. Aritomi Y. Aso S.-W. Bae Y.-B. Bae L. Baiotti R. Bajpai M. A. Barton K. Cannon E. Capocasa M.-L. Chan C.-S. Chen K.-H. Chen Y.-R. Chen H.-Y. Chu Y.-K. Chu S. Eguchi Y. Enomoto R. Flaminio Y. Fujii M. Fukunaga M. Fukushima G.-G. Ge A. Hagiwara S. Haino K. Hasegawa H. Hayakawa K. Hayama Y. Himemoto Y. Hiranuma N. Hirata E. Hirose Z. Hong B.-H. Hsieh G.-Z. Huang P.-W. Huang Y.-J. Huang B. Ikenoue S. Imam K. Inayoshi Y. Inoue K. Ioka Y. Itoh K. Izumi K. Jung P. Jung T. Kajita M. Kamiizumi N. Kanda G.-W. Kang K. Kawaguchi N. Kawai T. Kawasaki C. Kim J. Kim W. Kim Y.-M. Kim N. Kimura N. Kita H. Kitazawa Y. Kojima K. Kokeyama K. Komori A. K. H. Kong K. Kotake C. Kozakai R. Kozu R. Kumar J. Kume C.-M. Kuo H.-S. Kuo S. Kuroyanagi K. Kusayanagi K. Kwak H.-K. Lee H.-W. Lee R.-K. Lee M. Leonardi C.-Y. Lin F.-L. Lin L. C.-C. Lin G.-C. Liu L.-W. Luo M. Marchio Y. Michimura N. Mio O. Miyakawa A. Miyamoto Y. Miyazaki K. Miyo S. Miyoki S. Morisaki Y. Moriwaki K. Nagano S. Nagano K. Nakamura H. Nakano M. Nakano R. Nakashima T. Narikawa R. Negishi W.-T. Ni A. Nishizawa Y. Obuchi W. Ogaki J. J. Oh S.-H. Oh M. Ohashi N. Ohishi M. Ohkawa K. Okutomi K. Oohara C.-P. Ooi S. Oshino K.-C. Pan H.-F. Pang J. Park F. E. Peiia Arellano I. Pinto N. Sago S. Saito Y. Saito K. Sakai Y. Sakai Y. Sakuno S. Sato T. Sato T. Sawada T. Sekiguchi Y. Sekiguchi S. Shibagaki R. Shimizu T. Shimoda K. Shimode H. Shinkai T. Shishido A. Shoda K. Somiya E. J. Son H. Sotani R. Sugimoto T. Suzuki H. Tagoshi H. Takahashi R. Takahashi A. Takamori S. Takano H. Takeda M. Takeda H. Tanaka K. Tanaka T. Tanaka S. Tanioka E. N. Tapia San Martin S. Telada T. Tomaru Y. Tomigami T. Tomura F. Travasso L. Trozzo T. T. L. Tsang K. Tsubono S. Tsuchida T. Tsuzuki D. Tuyenbayev N. Uchikata T. Uchiyama A. Ueda T. Uehara K. Ueno G. Ueshima F. Uraguchi T. Ushiba M. H. P. M. van Putten H. Vocca J. Wang C.-M. Wu H.-C. Wu S.-R. Wu W.-R. Xu T. Yamada K. Yamamoto T. Yamamoto K. Yokogawa J. Yokoyama T. Yokozawa T. Yoshioka H. Yuzurihar National Astronomical Observatory of Japan (NAOJ) 2-21-1 Osawa Mitaka-City Tokyo 181-8588 Japan Research Center for the Early Universe (RESCEU) The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Department of Physics The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Institute for Cosmic Ray Research (ICRR) The University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa-City Chiba 277-8582Japan Accelerator Laboratory High Energy Accelerator Research Organization (KEK) 1-1 OhoTsukuba-City Ibaraki 305-0801 Japan Earthquake Research Institute The University of Tokyo 1-1-1Yayoi Bunkyo-ku Tokyo 113-0032Japan Kamioka Branch National Astronomical Observatory of Japan (NAOJ) 238 Higashi-Mozumi Kamioka-cho Hida-City Gifu Pref. Japan The Graduate University for Advanced Studies (SOKENDAI) 2-21-1 Osawa Mitaka-City Tokyo 181-8588 Japan Korea Institute of Science and Technology Information (KISTI) 245 Daehak-ro Yuseong-gu Daejeon 34141 South Korea National Institute for Mathematical Sciences 70 Yuseong-daero 1689 beon-gil Yuseong-gu Daejeon 34047 South Korea Graduate School of Science Osaka University 1-1 Machikaneyama-cho Toyonaka-City Osaka560-0043 Japan School of High Energy Accelerator Science The Graduate University for Advanced Studies (SOKENDAI) 1-1 Oho Tsukuba-City Ibaraki 305-0801 Japan Institute for Gravitational Research University of Glasgow Kelvin Building G12 8QQ UK Department of Applied Physics Fukuoka University Fukuoka Jonan Nanakuma 814-0180 Japan Department of Physics Tamkang university No.151 Yingzhuan Rd. Danshui Dist. New Taipei-City 25137 Taiwan Department of Physics the Center for High Energy and High Field Physics National Central University No. 300 Zhongda Road Zhongyi District Taiyuan-City 320 Taiwan Institute of Astronomy National Tsing Hua University No. 101 Section 2 Kuang-Fu Road Hsinchu 30013 Taiwan Department of Physics National Tsing Hua University No. 101 Section 2

Radiative cooling of the thermally isolated system is investigated in KAGRA gravitational wave telescope. KAGRA is a laser interferometer-based detector and main mirrors constituting optical cavities are cool down to 20K to reduce noises caused by the thermal fluctuation. The mirror is suspended with the multi-stage pendulum to isolate any vibration. Therefore, this mirror suspension system has few heat links to reduce vibration injection. Thus, this system is mainly cooled down with thermal radiation. In order to understand the process of radiative cooling of the mirror, we analyzed cooling curve based on mass and specific heat. As a result, it was newly found that a cryogenic part called 'cryogenic duct-shield' seems to have large contribution in the beginning of the mirror cooling. This finding will help to design new cooling system for the next generation cryogenic gravitational wave detector.

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IDFT:An Intermediate Node Based Deterministic Fault Tolerant Routing in 2D Mesh

IDFT:An Intermediate Node Based Deterministic Fault Tolerant...

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2015 International Conference on Computer Information Systems and Industrial Applications(CISIA2015)

作者： C.X.Yang X.W.Ren X.T.Ding P.J.Ren Institute of Artificial Intelligence and Robotics Xi'an Jiaotong University State Key Laboratory of Mathematical Engineering and Advanced Computing Institute of Artificial Intelligence and Robotics\Xi'an Jiaotong University

ISBN: (纸本)9781510805750

In order to alleviate the problem raised in Gomez's method[1],where messages with different source-destination pairs have great probability choosing the overlapped paths therefore,new transmission bottleneck might be generated nearby,we present an intermediate node based deterministic fault-tolerant routing,named *** method selects the qualified intermediate node among all the candidates by its residual bandwidth without over-stressing any particular *** addition,deterministic routing is applied along both subpaths to guarantee deadlock-free and in-order message *** thereby achieves traffic workload balance across the network and graceful performance degradation even in the presence of faults.

关键词： fault tolerance bandwidth utilization deterministic routing

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