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Consumer Communications and Networking Conference, CCNC IEEE

作者： Ines Brosso Graca Bressan Wilson V. Ruggiero College of Computation and Informatics Mackenzie Presbyterian University Sao Paulo Brazil Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Polytechnic of São Paulo University Brazil

This paper presents KUCAS (Known User Continuous Authentication System), a work-in-progress security system, that has a continuous authentication mechanism of users/consumers. The KUCAS system makes use of environmental context information, users behavior analysis, the behavior theories of Skinner and the Mathematical Confidence of Dempster-Shafer Evidences Theory, that establishes trust levels to authenticate the user by his behavior analysis, during an application software, in a specific domain of the computer networks, in a period of time. The dynamics of enclosed management in this system compares the current behavior with the user's previous behaviors description and with the trust restrictions. In case of indications of changes in the user's behavior, the system provides the behavior analysis of the user using database restrictions information. If there are uncertainties and divergences, mechanisms of security and alert signals are triggered.

关键词： Authentication Application software Information security Information analysis Data security computer security Humans computer networks Peer to peer computing History

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Improving QoS of web service composition by dynamic configuration

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Information Technology Journal 2010年第3期9卷 422-429页

作者： Yang, Huaizhou Li, Zengzhi Institute of Computer Architecture and Networks Xi'an Jiaotong University Xi'an 710049 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

In order to achieve self-adaptation to run-time environment and self-management of Web service composition, an extended hierarchical Petri net is presented to reflect the feasible configuration scheme of composite service. Being different from related works, the dynamic configuration scheme and execution process of Web service composition can be reflected together in the extended model. Furthermore, a rapid QoS calculation strategy of composite service is presented. Some important QoS calculation formulas are presented and proved. Based on the extended model and the QoS calculation strategy, a configuration with optimal QoS can be selected dynamically. The QoS of composite service is improved. The soundness and correctness of the dynamic configuration method are proved by simulation results and corresponding analysis. © 2010 Asian Network for Scientific Information.

关键词： Petri nets

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A Continuous Authentication System Based on User Behavior Analysis

A Continuous Authentication System Based on User Behavior An...

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International Conference on Availability, Reliability and Security, ARES

作者： Ines Brosso Alessandro La Neve Graça Bressan Wilson Vicente Ruggiero College of Computation and Informatic Mackenzie Presbyterian University Sao Paulo SP Brazil Department of Electrical Engineering Centro Universitário da FEI Sao Paulo SP Brazil Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Polytechnic School of São Paulo University Brazil Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Polytechnic School of São Paulo University Brazil

ISBN: (纸本)9781424458790

This paper presents a continuous authentication system based on user behavior analysis that makes use of environmental context information, users' behavior analysis and Neuro-Fuzzy Logic. This system must be able to acquire information in context, making them into a computational environment. This information is the basis of user behavior. The System, based on the evidences of the behavior, establishes if it can trust the user or not. According to the user behavior, levels of trust are released, to access the application software. Weights are attributed in the fuzzyfication process, according to the rules that were previously established for the parameters which help to establish the evidences of behavioral trust, in its different degrees. The neuro-fuzzy logic allows that the user behavioral database be continuously updated, interacting with the fuzzyfication mechanism, so as to keep trust levels updated according to the user behavior, in a more accurate and faithful way.

关键词： Authentication Application software Information analysis Information security Logic Signal analysis Humans computer security computer networks Electronic mail

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Experimental investigation of multi-wavelength clock recovery based on a quantum-dot SOA at 40 Gb/s

Experimental investigation of multi-wavelength clock recover...

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Signal Processing in Photonic Communications, SPPCom 2010

作者： Spyropoulou, M. Bonk, R. Hillerkuss, D. Pleros, N. Vallaitis, T. Freude, W. Tomkos, I. Leuthold, J. Aristotle University of Thessaloniki Department of Informatics Computer Architecture and Communications Laboratory Thessaloniki 54142 Greece Institute of Photonics and Quantum Electronics Karlsruhe Institute of Technology Engesserstr. 5 76131 Karlsruhe Germany Athens Information Technology High speed networks and optical communications Markopoulou Av. 19002 Peania-Attica Greece

We study single and multi-wavelength clock recovery functionality based on a fabry-pérot filter followed by a quantum-dot SOA at 40 Gb/s and we demonstrate its performance for various pseudo-random binary sequenc... 详细信息

ISBN: (纸本)9781557528964

关键词： Nanocrystals

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Evaluation of electro-oculography data for ataxia SCA-2 classification: A blind source separation approach

Evaluation of electro-oculography data for ataxia SCA-2 clas...

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International Conference on Intelligent Systems Design and Applications (ISDA)

作者： Rodolfo García-Bermúdez Fernando Rojas Ruiz Jesús González Peñalver Olga Valenzuela Cansino Luis Velázquez Pérez Cira Torres Roberto Becerra-García Department of Networks University of Holguin Oscar Lucero Moya Holguin Cuba Department of Networks University of Holguin “Oscar Lucero Moya” Granada Spain Center of the Research and Rehabilitation of Hereditary Holguin Cuba Center for the Research and Rehabilitation of Hereditary Ataxias Holguin Cuba Computer Architecture and Technology Department University of Granada Spain Computer Science Faculty University of Holguin “Oscar Lucero Moya” Holguin Cuba

Spino Cerebellar Ataxia type 2 is an autosomal dominant cerebellar hereditary ataxia with the highest prevalence in Cuba. Typical symptoms in patients of SCA2 ataxia include modifications in latency, peak velocity, and deviation in visual saccadic movements. After applying some electro-oculography based tests to both healthy and SCA2 afflicted individuals, differences in saccade morphology were found, mainly for 60° of stimulus amplitude. In this work, independent component analysis (ICA) is used to decompose the pulse and step components for the control of saccadic ocular movements, finding significant differences in time and amplitude ratio of both components. The obtained results point out the validity of the proposed methodology in order to study the effects of ataxia SCA2 in the oculomotor system.

关键词： Electrooculography Independent component analysis Classification algorithms Nervous system Visualization Blind source separation Algorithm design and analysis

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An annotation tool for enhancing the user interface generation process for services

An annotation tool for enhancing the user interface generati...

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KpbiMuKo 2009 CriMiCo - 2009 19th International Crimean Conference Microwave and Telecommunication Technology

作者： Izquierdo, Paoli Janeiro, Jordan Hübsch, Gerald Springer, Thomas Schill, Alexander Department of Computer Science Institute of System Architecture Chair of Computer Networks Dresden Technical University Dresden Sachsen 01187 Germany

ISBN: (纸本)9789663352497

The user interface generation process is still a complex issue. The manual creation process is time consuming and complex because it requires the combination of the application developer work and the user interface designer work. Therefore, many approaches investigate the automatic user interface generation. However, currently such approaches are not able to take usability aspects into account, due to the lack of information for such a process. Thus, we propose a tool which intends to ease and enhance the automatic user interface generation process for services by introducing service annotations that are attached to services and provide additional information for the process of automatic user interface generation. © 2009: CriMiCo'2009 Organizing Committee.

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Improved meet-in-the-middle attacks on 7-round AES-192 and 8-round AES-256

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Tongxin Xuebao/Journal on Communications 2010年第9 A期31卷 197-201页

作者： Dong, Xiao-Li Hu, Yu-Pu Chen, Jie Li, Shun-Bo Yang, Yang Key Laboratory of Computer Networks and Information Security of Ministry of Education Xidian University Xi'an 710071 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100049 China School of Science Xi'an University of Architecture and Technology Xi'an 710055 China

A new variant of 5-round distinguisher of meet-in-the-middle attack on AES was constructed by exploiting the properties of the round transform of AES. Based on the variant of distinguisher, meet-in-the-middle attacks on 7-round AES-192 and 8-round AES-256 were presented by using the time-memory tradeoff approach. It is shown that the new results are better than the cryptanalytic results presented at FSE2008 on reduced AES in terms of the time complexity and the memory complexity.

关键词： Cryptography

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A monitoring and adaptation architecture for the future Internet of Services

A monitoring and adaptation architecture for the future Inte...

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IADIS International Conference WWW/Internet 2009, ICWI 2009

作者： Braun, Iris Wauer, Matthias Reichert, Sandro Spillner, Josef Strunk, Anja Schill, Alexander Technische Universität Dresden Faculty of Computer Science Institute of Systems Architecture Department of Computer Networks Nöthnitzer Str. 46 Dresden01187 Germany

ISBN: (纸本)9789728924935

The article presents the architecture of a distributed platform for the future Internet of Services, where services can be provided and sold over so-called service market places. We focus on the description of the monitoring and adaptation mechanisms in the service execution phase which are necessary to ensure the quality of service executions and the reliability of service level agreements. © 2009 IADIS.

关键词： Web services

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CASEMANS 2009: The 3rd ACM International Workshop on Context-Awareness for Self-Managing Systems 09

CASEMANS 2009: The 3rd ACM International Workshop on Context...

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3rd ACM International Workshop on Context-Awareness for Self-Managing Systems, Casemans 2009

作者： Dargie, Waltenegus Kuwahara, Noriaki Technical University of Dresden Institute for Systems Architecture Department of Computer Networks Dresde Germany Kyoto Institute of Technology Graduate School of Science and Technology Kyoto Japan

ISBN: (纸本)9781605584393

This year, the 3rd ACM International Workshop on Context-Awareness for Self-Managing Systems (Devices, Applications and networks) (CASEMANS 2009) is organized in Nara, Japan. This article summarizes the objectives of the CASE-MANS 2009 workshop and gives an overview of the papers that are selected for presentation and publication. Copyright 2009 ACM.

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ISAR imaging of ship target based on LMSF signal

ISAR imaging of ship target based on LMSF signal

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2009 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2009

作者： Zhang, Long Si, Dong Sen He, Wei Xing, Meng Dao State Key Lab for Radar Signal Processing Xidian University Shaanxi 710071 China Xi'an Polytechnic University Shaanxi 710048 China Institute of Computer Architecture and Networks Xi'an Jiaotong University Xi'an 710049 China

ISBN: (纸本)9781424427314

To obtain high resolution ISAR image of ship target in motion with narrow-bandwidth T/R devices and a low-speed A/D sampler, an effective imaging method based on Linearly Modulated Stepped Frequency (LMSF) is proposed in this paper. Firstly, the signal model is developed and analyzed. Secondly, a band coherent processing method is proposed to eliminated the error induced by the translational motion and the high range profile is obtained. Finally, the high resolution of cross range is achieved by using the DechirpClean techinque. The theory analysis and the resutl of real data processing demonstrate the performance of the proposed method. ©2009 IEEE.

关键词： Ships

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