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2014 International Conference on information and communications Technologies, ICT 2014

作者： Xu, Xiaofeng Wang, Xiao Science and Technology on Communication Information Security Control Laboratory China Electronic Group Corporation No. 36 Institute Zhejiang Jinxing China School of Instrument Science and Opto-Electronics Engineering Beijing University of Aeronautics and Astronautics Beijing China

ISBN: (纸本)9781849198431

Wireless communication network has such features as limited bandwidth, changeful channel and dynamic topology, etc. In MANETS, the performance is significantly degraded as the scale of the network grows, which has lots of difficulties in accessing control, bandwidth distribution, resource assign and congestion control. Therefore, in this paper, we have proposed an online self-organized group establishing mechanism for strategic mobile scenarios of MANETs to realize the maneuverability of putting the secure group operations into effect. First of all, the algorithm performs initialization for each node, and then the nodes determine group-manager based on condition function and invite neighboring nodes to join in, finally, the rest nodes without grouping confirm their own groups by the group condition function. Both theoretical analysis and simulation experiments have demonstrated that our method can meet the scalability requirement which plays an important role in prolonging the network lifetime and effectively saving the communication, computation and storage overhead in strategic mobile scenario of MANETs.

关键词： Bandwidth

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Group establishing algorithm for strategic mobile scenario in manets

Group establishing algorithm for strategic mobile scenario i...

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2014 International Conference on information and communications Technologies, ICT 2014

作者： Xiaofeng, Xu Xiao, Wang Science and Technology on Communication Information Security Control Laboratory China Electronic Group Corporation No. 36 Institute Zhejiang Jinxing China School of Instrument Science and Opto-electronics Engineering Beijing University of Aeronautics and Astronautics Beijing China

ISBN: (纸本)9781849198431

关键词： Bandwidth

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROscience 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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Spectrum leasing and relay selection in multiuser cooperative cognitive radio networks

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Journal of communications 2014年第3期9卷 198-207页

作者： Tang, Yi Grace, David Wang, Lijie College of Electronic Science and Engineering National University of Defense Technology Hunan 410073 China Science and Technology on Information System Security Laboratory China Department of Electronics University of York York YO10 5DD United Kingdom Beijing Aerospace Control Center Beijing China

In this paper, we consider multiple primary and multiple secondary users cooperative cognitive radio networks, in which the primary users (PUs) lease a portion of their spectrum to the secondary users (SUs) for some revenue, and in return the SUs play as relays and help forward the data of the Pus in exchange for being granted spectrum opportunities. Both the PUs and SUs aim to maximize their own utilities. The spectrum leasing and relay selection problem is studied. We formulate the spectrum leasing problem as a Stackelberg game, and transform the relay selection problem as an assignment problem which is solved by the Hungarian method. Numerical results show that, under the proposed cooperative spectrum leasing-optimal-relay-selection scheme, both the primary and secondary network can achieve high utilities. © 2014 Engineering and technology Publishing.

关键词： Cognitive radio

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Coordinated Attack Model with Multi-Nodes Based on the P2P Structure

Coordinated Attack Model with Multi-Nodes Based on the P2P S...

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2014 International Conference on Electrical and Electronic Engineering(EEE 2014)

作者： Wei WANG Wen-hong ZHAO Science and Technology on Communication Information Security Control Laboratory Jiangnan Electronic Communication Institute Nanhu College Jiaxing University

Based on the P2P structure,a coordinated attack model with multi-nodes is presented for introduction from link configuration,broadcast mechanism and attack *** P2P,Pure P2P and Super P2P are discussed in link configuration ***,BCRM and DRM mechanisms are introduced in broadcast *** attack methods mainly focus on the index poisoning and routing table *** model is advanced in high attack flexibility,no single point of failure,high freedom in node attack,difficult to cluster and identify the attack traffic,difficult to trace the attacker,robustness,etc.,and it is suitable for wireless network confrontation.

关键词： P2P Coordinated attack Single point of failure Wireless network

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Markov chain-based attack on the CSMA/CA mechanism

Markov chain-based attack on the CSMA/CA mechanism

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International Conference on Multimedia, communication and Computing Application（MCCA 2014）

作者： W.Wang W.H.Zhao Science and Technology on Communication Information Security Control Laboratory Jiangnan Electronic Communication Institute Nanhu College Jiaxing University

The CSMA/CA(Carrier Sense Multiple Access with Collision Avoidance) mechanism is formally modeled ***,based on the Markov Chain theory,the analysis of the attack on CSMA/CA is introduced from two aspects which are the stochastic performance model and bandwidth share *** discussing the typical attack methods,the performance is analyzed from the aspects of throughput,communication efficiency,and collision numbers,which validates the feasibility and efficiency of attack method based on Markov Chain theory.

关键词： frame Markov chain-based attack on the CSMA/CA mechanism

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Critical nodes selection based on trust evaluation in Ad Hoc networks

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Tongxin Xuebao/Journal on communications 2014年 35卷 213-219页

作者： Liu, Zhuo-Chao Yang, Li Jiang, Qi Wang, Wei Cao, Chun-Jie School of Computer Science and Technology Xidian University Xi'an710071 China Science and Technology on Communication Information Security Control Laboratory The 36th Research Institute of CETC Jiaxing314033 China College of Information Science and Technology Hainan University Haikou570228 China

There are some critical nodes in Ad Hoc networks, and the failure of these critical nodes can critically affect the performance of the network. For the aim of selecting the important and trusted critical nodes in Ad Hoc networks, the definition of critical nodes is given, meanwhile, a critical nodes selection algorithm based on trust evaluation is proposed. By using the node contraction, the importance degree of the node is calculated. Then combined with D-S evidence theory, the trust evaluation model of critical node is presented, which is used to obtain the objective trust of the node and to judge the credibility of the node. Finally, the critical nodes are selected by considering of the importance degree and the credibility of the node. Simulation results show that when those critical nodes are failure, selected by the proposed algorithm, the network performance is decreasing significantly. ©, 2014, Editorial Board of Journal on communications. All right reserved.

关键词： Ad hoc networks

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A proper integral representation of Marcum Q-Function

A proper integral representation of Marcum Q-Function

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General Assembly and Scientific Symposium, URSI

作者： Hua Jun Science and Technology of Communication and Information Security Control Laboratory Jiaxing Zhejiang Province P.R. China

A new proper integral representation of the first order Marcum Q-function Q(a, b) is derived and proved in this article. The most special feature of this form is that it holds the same representation for any value of arguments ratio a/b, meanwhile, it is can be used for stable numerical quadrature directly, and furthermore, it is also useful in the performance analysis of radar detection and digital communication systems analytically. The correctness of this new form is checked by the numerical comparison with the definition form of Marcum Q-function over a small and large domains in its two arguments.

关键词： Digital communication Performance analysis Radar detection Testing Accuracy Algorithm design and analysis Fading

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Implemention of cyber security situation awareness based on knowledge discovery with trusted computer

Implemention of cyber security situation awareness based on ...

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APWeb 2014 Workshops: 1st International Workshop on Social Network Analysis, SNA 2014, 1st International Workshop on Network and information security, NIS 2014 and 1st International Workshop on Internet of Things Search, IOTS 2014

作者： Jiemei, Zeng Xuewei, Feng Dongxia, Wang Lan, Fang Beijing Aerospace Control Center Beijing 100296 China Beijing Institute of System Engineer National Key Laboratory of Science and Technology on Information System Security Beijing 100101 China

ISBN: (纸本)9783319111186

Situation awareness aims to provide the global security views of the cyberspace for administrators. In this paper, a novel framework of cyber security situation awareness is proposed. The framework is based on a trusted engine, and can be viewed from two perspectives, one is data flow, which presents the abstracting of cyber data, and the other one is logic view, which presents the procedure of situation awareness. The framework's core component is a correlation state machine, which is an extension of state machine, and used to model attack scenarios. The correlation state machine is a data structure of situation awareness, and stored in a trusted computer in order to avoid being tampered. It is created based on the technology of knowledge discovery, and after being created, it can be used to assess and predict the threat situation. We conclude with an example of how the framework can be applied to real world to provide cyber security situation for administrators. © Springer International Publishing Switzerland 2014.

关键词： Trusted computing

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Stochastic gradient descent based K-means algorithm on large scale data clustering

Stochastic gradient descent based K-means algorithm on large...

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2014 International Conference on Manufacturing technology and Electronics Applications, ICMTEA 2014

作者： Ding, Jie Zhu, Li Peng Hu, Bin Hang, Ren Long Sun, Yu Bao Sun, Yu Bao Information and Communication Department China Electric Power Research Institute Nanjing China School of Information and Control Nanjing University of Information Science and Technology Nanjing China Jiangsu Key Laboratory of Spectral Imaging and Intelligent sense Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9783038353287

With the rapid advance of data collection and storage technique, it is easy to acquire tens of millions or even billions of data sets. How to explore and exploit the useful or interesting information for human beings from these data sets has become an urgent issue. Traditional k-means clustering algorithm has been widely used in data mining community. First, randomly initialize k clustering centres. Then, all instances are classified into k different classes according to their distances to clustering centres. Lastly, update the clustering centres by the mean of its corresponding constituent instances. This whole process will be iterated until convergence. Obviously, at each iteration, distance matrix from all instances to k clustering centres must be calculated which will cost so much time when encounter large scale data sets. To address this issue, in this paper, we proposed a fast optimization algorithm based on stochastic gradient descent (SGD). At each iteration, randomly choose an instance, search its corresponding clustering centre and then update it immediately. Experimental results show that our proposed method achieves a competitive clustering results with less time cost. © (2014) Trans Tech Publications, Switzerland.

关键词： Data mining

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