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Experimental asymmetric plug-and-play measurement-device-independent quantum key distribution

Physical Review A 2016年第3期94卷 032326-032326页

作者： Guang-Zhao Tang Shi-Hai Sun Feihu Xu Huan Chen Chun-Yan Li Lin-Mei Liang College of Science National University of Defense Technology Changsha 410073 People's Republic of China Research Laboratory of Electronics Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA State Key Laboratory of High Performance Computing National University of Defense Technology Changsha 410073 People's Republic of China

Measurement-device-independent quantum key distribution (MDI-QKD) is immune to all security loopholes on detection. Previous experiments on MDI-QKD required spatially separated signal lasers and complicated stabilization systems. In this paper, we perform a proof-of-principle experimental demonstration of plug-and-play MDI-QKD over an asymmetric channel setting with a single signal laser in which the whole system is automatically stabilized in spectrum, polarization, arrival time, and phase reference. Both the signal laser and the single-photon detectors are in the possession of a common server. A passive timing-calibration technique is applied to ensure the precise and stable overlap of signal pulses. The results pave the way for the realization of a quantum network in which the users only need the encoding devices.

关键词： Quantum cryptography

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Impedance Control of a Robot Needle with a Fiber Optic Force Sensor

Impedance Control of a Robot Needle with a Fiber Optic Force...

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2016 IEEE 13th International Conference on Signal Processing（ICSP2016）

作者： Lifang Xiao Tangwen Yang Benyan Huo Xingang Zhao Jianda Han Weiliang Xu Institute of Information Science Beijing Jiaotong University Beijing Key Laboratory of Advanced Information Science and Network Technology State Key Laboratory of Robotics Shenyang Institute of Automation Chinese academy of science Department of Mechanical Engineering University of Auckland

In this paper, an impedance control is proposed for a robotic needle with a fiber optic force sensor. The fiber optic force sensor is placed at the tip of the needle to directly measure the interaction force between needle and soft tissue, overcoming the noise like friction force. The sensor is sensitive to the temperature condition, and their relationship is first established, and then used to compensate for the temperature influence to enhance the force measurement. An impedance control is presented based on insertion model whose impedance parameters are identified in terms of acquired test data, and experimental results show that the control strategy is effective to avoid excessive insertion force, reducing the risk of robotic needle.

关键词： robotic needle impedance control fiber optic force sensor temperature compensation

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A dynamic niching clustering algorithm based on individual-connectedness and its application to color image segmentation

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Pattern Recognition 2016年 60卷 334-347页

作者： Dongxia Chang Yao Zhao Lian Liu Changwen Zheng Institute of Information Science Beijing jiaotong University Beijing 100044 China School of Computer and Information Technology Beijing Jiaotong University Beijing 100044 China Beijing Key Laboratory of Advanced Information Science and Network Technology Beijing 100044 China National Key Lab of Integrated Information System Technology Institute of Software Chinese Academy of Sciences Beijing 100080 China

In this paper, a dynamic niching clustering algorithm based on individual-connectedness (DNIC) is proposed for unsupervised classification with no prior knowledge. It aims to automatically evolve the optimal number of clusters as well as the cluster centers of the data set based on the proposed adaptive compact k -distance neighborhood algorithm. More specifically, with the adaptive selection of the number of the nearest neighbor and the individual-connectedness algorithm, DNIC often achieves several sets of connecting individuals and each set composes an independent niche. In practice, each set of connecting individuals corresponds to a homogeneous cluster and this ensures the separability of an arbitrary data set theoretically. An application of the DNIC clustering algorithm in color image segmentation is also provided. Experimental results demonstrate that the DNIC clustering algorithm has high performance and flexibility.

关键词： Clustering Genetic algorithms Niching Connected individual k -distance neighborhood Image segmentation

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A fault diagnosis method for complex system based on hierarchical bayesian network

A fault diagnosis method for complex system based on hierarc...

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AIAA Modeling and Simulation Technologies Conference, 2016

作者： Niu, Wei Niu, Wensheng Cheng, Juan AVIC Computing Technique Research Institute 15 Jinye Er Road Xi’anShaanxi710065 China Aviation Key Laboratory of Science and Technology on Airborne and Missileborne Computer Xi’an710065 China Xidian University 9 Dianzi 3rd Road Xi’anShaanxi710071 China

ISBN: (数字)9781624104299

ISBN: (纸本)9781624104299

With basic requirements for fault diagnosis of health management technology—detect and diagnosis fault precisely, decrease CFAR efficiently, make a research from three respects: uncertainty of data, uncertainty of diagnosis result and uncertainty of feature parameter selection. Based on advantages for uncertainty problem of Bayesian network, Hierarchical Bayesian for fault diagnosis is proposed. The existing algorithms are not capable of selecting variables systematically so that they generally use the full model, which may contain unnecessary variables as well as necessary variables. Ignoring this model uncertainty often gives rise to, so called, the smearing effect in solutions. Complexity and difficulty of modeling is increased. The simulation results show this method can get better fault feature, improve fault discernment, and validate the model efficiency. © 2016 by the American institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： Failure analysis

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Simulate Human Saccadic Scan-Paths in Target Searching

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International Journal of Intelligence science 2016年第1期6卷 1-9页

作者： Lijuan Duan Jun Miao David M. W. Powers Jili Gu Laiyun Qing Beijing Key Laboratory of Trusted Computing Beijing Key Laboratory on Integration and Analysis of Large-Scale Stream Data College of Computer Science and Technology Beijing University of Technology Beijing China National Engineering Laboratory for Critical Technologies of Information Security Classified Protection Beijing China Key Laboratory of Intelligent Information Processing of Chinese Academy of Sciences(CAS) Institute of Computing Technology CAS Beijing China School of Computer Science Engineering & Maths Flinders University of South Australia Adelaide South Australia Beijing Samsung Telecom R&D Center Beijing China University of Chinese Academy of Sciences Beijing China

Human saccade is a dynamic process of information pursuit. There are many methods using either global context or local context cues to model human saccadic scan-paths. In contrast to them, this paper introduces a model for gaze movement control using both global and local cues. To test the performance of this model, an experiment is done to collect human eye movement data by using an SMI iVIEW X Hi-Speed eye tracker with a sampling rate of 1250 Hz. The experiment used a two-by-four mixed design with the location of the targets and the four initial positions. We compare the saccadic scan-paths generated by the proposed model against human eye movement data on a face benchmark dataset. Experimental results demonstrate that the simulated scan-paths by the proposed model are similar to human saccades in term of the fixation order, Hausdorff distance, and prediction accuracy for both static fixation locations and dynamic scan-paths.

关键词： Saccadic Scan-Paths Eye Movement Fixation Locations Dynamic Scan-Paths

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Background modeling methods in video analysis： A review and comparative evaluation

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CAAI Transactions on Intelligence technology 2016年第1期1卷 43-60页

作者： Yong Xu Jixiang Dong Bob Zhang Daoyun Xu Bio-Computing Research Center Shenzhen Graduate School Harbin Institute of Technology 518055 Shenzhen China Shenzhen Key Laboratory of Network Oriented Intelligent Computation Shenzhen China Department of Computer and Information Science University of Macao Avenida da Universidade Taipa Macao China The College of Computer Science and Technology Guizhou University Guiyang 550025 Guizhou China

Foreground detection methods can be applied to efficiently distinguish foreground objects including moving or static objects from back- ground which is very important in the application of video analysis, especially video surveillance. An excellent background model can obtain a good foreground detection results. A lot of background modeling methods had been proposed, but few comprehensive evaluations of them are available. These methods suffer from various challenges such as illumination changes and dynamic background. This paper first analyzed advantages and disadvantages of various background modeling methods in video analysis applications and then compared their performance in terms of quality and the computational cost. The Change *** （CDnet2014） dataset and another video dataset with different envi- ronmental conditions （indoor, outdoor, snow） were used to test each method. The experimental results sufficiently demonstrated the strengths and drawbacks of traditional and recently proposed state-of-the-art background modeling methods. This work is helpful for both researchers and engineering practitioners. Codes of background modeling methods evaluated in this paper are available ***/***.

关键词： Background modeling Video analysis Comprehensive evaluation

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Search for heavy Higgs bosons decaying to a top quark pair in proton-proton collisions at √s = 13 TeV

arXiv

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arXiv 2019年

作者： Sirunyan, A.M. Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Escalante Del Valle, A. Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F.M. Rad, N. Schieck, J. Schöfbeck, R. Spanring, M. Templ, S. Waltenberger, W. Wulz, C.-E. Zarucki, M. Chekhovsky, V. Litomin, A. Makarenko, V. Suarez Gonzalez, J. Darwish, M.R. De Wolf, E.A. Di Croce, D. Janssen, X. Kello, T. Lelek, A. Pieters, M. Rejeb Sfar, H. Van Haevermaet, H. Van Mechelen, P. Van Putte, S. Van Remortel, N. Blekman, F. Bols, E.S. Chhibra, S.S. D'Hondt, J. De Clercq, J. Lontkovskyi, D. Lowette, S. Marchesini, I. Moortgat, S. Morton, A. Python, Q. Tavernier, S. Van Doninck, W. Van Mulders, P. Beghin, D. Bilin, B. Clerbaux, B. De Lentdecker, G. Dorney, B. Favart, L. Grebenyuk, A. Kalsi, A.K. Makarenko, I. Moureaux, L. Pétré, L. Popov, A. Postiau, N. Starling, E. Thomas, L. Vander Velde, C. Vanlaer, P. Vannerom, D. Wezenbeek, L. Cornelis, T. Dobur, D. Gruchala, M. Khvastunov, I. Niedziela, M. Roskas, C. Skovpen, K. Tytgat, M. Verbeke, W. Vermassen, B. Vit, M. Bruno, G. Bury, F. Caputo, C. David, P. Delaere, C. Delcourt, M. Donertas, I.S. Giammanco, A. Lemaitre, V. Mondal, K. Prisciandaro, J. Taliercio, A. Teklishyn, M. Vischia, P. Wuyckens, S. Zobec, J. Alves, G.A. Correia Silva, G. Hensel, C. Moraes, A. Aldá, W.L. Belchior Batista Das Chagas, E. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Coelho, E. Da Costa, E.M. Da Silveira, G.G. De Jesus Damiao, D. Fonseca De Souza, S. Martins, J. Matos Figueiredo, D. Medina Jaime, M. Melo De Almeida, M. Mora Herrera, C. Mundim, L. Nogima, H. Rebello Teles, P. Sanchez Rosas, L.J. Santoro, A. Silva Do Amaral, S.M. Sznajder, A. Thiel, M. Tonelli Manganote, E.J. Torres Da Silva De Araujo, F. Vilela Pereira, A. Bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, E.M. Lemos, D.S. Mercadante, P.G. Novaes, S.F. Padula, Sandra S. Aleksandrov, A. Antchev, G. Atanasov, I. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. Shopova, M. Sultanov, G Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratoire Lepr

A search is presented for additional scalar (H) or pseudoscalar (A) Higgs bosons decaying to a top quark pair in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set analyzed corresponds to an integrated luminosity of 35.9 fb−1 collected by the CMS experiment at the LHC. Final states with one or two charged leptons are considered. The invariant mass of the reconstructed top quark pair system and variables that are sensitive to the spin of the particles decaying into the top quark pair are used to search for signatures of the H or A bosons. The interference with the standard model top quark pair background is taken into account. A moderate signal-like deviation compatible with an A boson with a mass of 400 GeV is observed with a global significance of 1.9 standard deviations. New stringent constraints are reported on the strength of the coupling of the hypothetical bosons to the top quark, with the mass of the bosons ranging from 400 to 750 GeV and their total relative width from 0.5 to 25%. The results of the search are also interpreted in a minimal supersymmetric standard model scenario. Values of mA from 400 to 700 GeV are probed, and a region with values of tan β below 1.0 to 1.5, depending on mA, is excluded at 95% confidence level. © 2019, CC BY.

关键词： Bosons

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Search for supersymmetry in events with a photon, jets, b-jets, and missing transverse momentum in proton-proton collisions at 13 TeV

arXiv

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arXiv 2019年

作者： Sirunyan, A.M. Tumasyan, A. Adam, W. Ambrogi, F. Asilar, E. Bergauer, T. Brandstetter, J. Dragicevic, M. Ero, J. Escalante Del Valle, A. Flechl, M. Fruhwirth, R. Ghete, V.M. Hrubec, J. Jeitler, M. Krammer, N. Kratschmer, I. Liko, D. Madlener, T. Mikulec, I. Rad, N. Rohringer, H. Schieck, J. Schofbeck, R. Spanring, M. Spitzbart, D. Waltenberger, W. Wittmann, J. Wulz, C.-E. Zarucki, M. Chekhovsky, V. Mossolov, V. Suarez Gonzalez, J. De Wolf, E.A. Di Croce, D. Janssen, X. Lauwers, J. Pieters, M. Van Haevermaet, H. Van Mechelen, P. Van Remortel, N. Abu Zeid, S. Blekman, F. D'Hondt, J. De Clercq, J. Deroover, K. Flouris, G. Lontkovskyi, D. Lowette, S. Marchesini, I. Moortgat, S. Moreels, L. Python, Q. Skovpen, K. Tavernier, S. Van Doninck, W. Van Mulders, P. Van Parijs, I. Beghin, D. Bilin, B. Brun, H. Clerbaux, B. De Lentdecker, G. Delannoy, H. Dorney, B. Fasanella, G. Favart, L. Goldouzian, R. Grebenyuk, A. Kalsi, A.K. Lenzi, T. Luetic, J. Postiau, N. Starling, E. Thomas, L. Vander Velde, C. Vanlaer, P. Vannerom, D. Wang, Q. Cornelis, T. Dobur, D. Fagot, A. Gul, M. Khvastunov, I. Poyraz, D. Roskas, C. Trocino, D. Tytgat, M. Verbeke, W. Vermassen, B. Vit, M. Zaganidis, N. Bakhshiansohi, H. Bondu, O. Brochet, S. Bruno, G. Caputo, C. David, P. Delaere, C. Delcourt, M. Giammanco, A. Krintiras, G. Lemaitre, V. Magitteri, A. Piotrzkowski, K. Saggio, A. Vidal Marono, M. Vischia, P. Wertz, S. Zobec, J. Alves, F.L. Alves, G.A. Correia Silva, G. Hensel, C. Moraes, A. Pol, M.E. Rebello Teles, P. Belchior Batista Das Chagas, E. Carvalho, W. Chinellato, J. Coelho, E. Da Costa, E.M. Da Silveira, G.G. De Jesus Damiao, D. De Oliveira Martins, C. Fonseca De Souza, S. Malbouisson, H. Matos Figueiredo, D. Melo De Almeida, M. Mora Herrera, C. Mundim, L. Nogima, H. Prado Da Silva, W.L. Sanchez Rosas, L.J. Santoro, A. Sznajder, A. Thiel, M. Tonelli Manganote, E.J. Torres Da Silva De Araujo, F. Vilela Pereira, A. Ahujaa, S. Bernardesa, C.A. Calligarisa, L. Fernandez Perez Tomeia, T.R. Gregoresb, E.M. Mercadanteb, P.G. Novaesa, S.F. Padula Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade Do Estado Do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Tsinghua University Beijing China Universidad de Los Andes Bogota Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS/IN2P3 Université Paris-Saclay Palaiseau France Université de Strasbourg CNRS IPHC UMR 7178 Strasbourg France Centre de Calcul de l'Institut National de Physique Nucleaire et de Physique des Particules CNRS/IN2P3 Villeurbanne France Univ

A search for supersymmetry is presented based on events with at least one photon, jets, and large missing transverse momentum produced in proton-proton collisions at a center-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 35.9 fb-1 and were recorded at the LHC with the CMS detector in 2016. The analysis characterizes signal-like events by categorizing the data into various signal regions based on the number of jets, the number of b-tagged jets, and the missing transverse momentum. No significant excess of events is observed with respect to the expectations from standard model processes. Limits are placed on the gluino and top squark pair production cross sections using several simplified models of supersymmetric particle production with gauge-mediated supersymmetry breaking. Depending on the model and the mass of the next-to-lightest supersymmetric particle, the production of gluinos with masses as large as 2120 GeV and the production of top squarks with masses as large as 1230 GeV are excluded at 95% confidence level. Copyright © 2019, The Authors. All rights reserved.

关键词： Photons

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Advanced Coverage Optimization Techniques for Small Cell Clusters

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China Communications 2015年第8期12卷 111-122页

作者： HUANG Liang ZHOU Yiqing WANG Yuanyuan HAN Xue SHI Jinglin CHEN Xunxun National Computer Network Emergency Response Technical Team Coordination Center of China Beijing Key Laboratory of Mobile Computing and Pervasive Device Institute of Computing Technology Chinese Academy of Sciences University of Chinese Academy of Sciences

Coverage challenge for small considered to be a optlmlzation is a main cell clusters which are promising solution to provide seamless cellular coverage for large indoor or outdoor areas. This paper focuses on small cell cluster coverage problems and proposes both centralized and distributed self-optimization methods. Modified Particle swarm optimization （MPSO） is introduced to centralized optimization which employs particle swarm optimization （PSO） and introduces a heuristic power control scheme to accelerate the algorithm to search tbr the global optimum solution. Distributed coverage optimization is modeled as a non-cooperative game, with a utility function considering both throughput and interference. An iterative power control algorithm is then proposed using game theory （DGT） which converges to Nash Equilibrium （NE）. Simulation results show that both MPSO and DGT have excellent performance in coverage optimization and outperform optimization using simulated annealing algorithm （SA）, reaching higher coverage ratio and throughput while with less iterations.

关键词： small cell cluster coverage op- timization particle swarm optimization gametheory

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Balanced Parity Update Algorithm with Queueing Length Awareness for RAID Arrays

Balanced Parity Update Algorithm with Queueing Length Awaren...

引用

International Conference on Parallel and Distributed Systems (ICPADS)

作者： Youxu Chen Yinlong Xu Yongkun Li Jun Xu AnHui Province Key Laboratory of High Performance Computing Hefei China School of Computer Science and Technology University of Science and Technology China Collaborative Innovation Center of High Performance Computing National University of Defense Technology China Shannon Laboratory Central Research Institute Huawei Technologies Co. Ltd. China

ISBN: (纸本)9781509053827

In parity-based RAID arrays, to update a data chunk, the corresponding parity chunk(s) must be updated accordingly so as to keep data consistency and availability. To achieve this, either read-modify-write (RMW) or read-construct-write (RCW) could be used. Traditional parity update algorithm always selects the one requiring fewer pre-reads so as to reduce the total number of I/Os, but it may aggravate the skewness of I/O queues on disks, and thus degrades the system performance. In this paper, we propose a balanced parity update algorithm with queueing length awareness, BPU, which takes the number of pre-reads, the skewness of I/O queues on disks, and real-time workload into consideration when selecting RCW or RMW to update parity chunks. We implement a prototype system with BPU to evaluate its performance. Experimental results show that the length of I/O queues on disks in a RAID array may be highly skewed when using traditional parity update algorithm, and thus severely degrades the system performance. With BPU, we can reduce the average response time by up to 10%. We also study the performance of BPU under different system configurations, and provide multiple insights for adjusting the parameters of BPU so as to optimize its performance.

关键词： System performance Arrays Prototypes Queueing analysis Time factors Bandwidth Heuristic algorithms

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