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A Continuous Authentication system Based on User Behavior Analysis

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

引用

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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Known User Continuous Authentication system for Consumer Application Software

Known User Continuous Authentication System for Consumer App...

引用

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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A high efficiency and multi-band/multi-mode power amplifier using a distributed second harmonic termination

A high efficiency and multi-band/multi-mode power amplifier ...

引用

European (Formerly European Gallium Arsenide and Other Semiconductors Application Symposium - EGASS) Microwave Integrated Circuit Conference (EuMIC)

作者： Jangheon Kim Farouk Mkadem Slim Boumaiza Telecommunication System Division Digital Media & Communication Business Samsung Electronics Company Limited Suwon Gyeonggi South Korea Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada

This paper proposes a new broadband saturated power amplifier (SPA) with a distributed second harmonic termination supporting multi-band/multi-mode operation. The proposed network is composed of a fundamental matching circuit and multiple second harmonic termination circuits. Due to the multiple harmonic terminations, the proposed PA improves the frequency range where the PA can achieve a high efficiency. The proposed PA is fabricated using a 45 W Cree CGH40045 GaN HEMT. Drain efficiencies of greater than 60% (average 66%) are achieved between about 1.8 GHz and 2.3 GHz (500 MHz bandwidth). When driven with long term evolution (LTE) and two carrier wideband code division multiple access (WCDMA) signals at DCS1800, PCS1900, and WCDMA bands, the linearity specifications of the corresponding standards are satisfied using the digital predistortion linearization technique, and it attains an efficiency of greater than 30%.

关键词： Harmonic analysis Broadband communication Impedance Multiaccess communication Spread spectrum communication Bandwidth Gallium nitride

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A high efficiency and multi-band/multi-mode power amplifier using a distributed second harmonic termination

A high efficiency and multi-band/multi-mode power amplifier ...

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作者： Kim, Jangheon Mkadem, Farouk Boumaiza, Slim Telecommunication System Division Digital Media and Communication Business Samsung Electronics Co. Ltd. 416 Maetan 3-dong Yeongtong-gu 443-742 Korea Republic of Department of Electrical and Computer Engineering University of Waterloo 200 University Ave West Waterloo ON N2L 3G1 Canada

ISBN: (纸本)9782874870163

关键词： III-V semiconductors

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Known User Continuous Authentication system

Known User Continuous Authentication System

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Consumer Communications and Networking Conference, CCNC IEEE

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

This work presents KUCAS (Known User Continuous Authentication system), a work-in-progress security system, that has a continuous authentication mechanism of users in software application. 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 Data security Information analysis computer security Humans Communication system software Databases Context-aware services

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A high efficiency and multi-band/multi-mode power amplifier using a distributed second harmonic termination

A high efficiency and multi-band/multi-mode power amplifier ...

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作者： Kim, Jangheon Mkadem, Farouk Boumaiza, Slim Telecommunication System Division Digital Media and Communication Business Samsung Electronics Co. Ltd 416 Maetan 3-dong Yeongtong-gu Suwon-si Gyeonggi-do 443-742 Korea Republic of Department of Electrical and Computer Engineering University of Waterloo 200 University Ave West Waterloo ON N2L 3G1 Canada

ISBN: (纸本)9782874870156

关键词： III-V semiconductors

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A High Efficiency and Multi-Band/Multi-Mode Power Amplifier using a Distributed Second Harmonic Termination

A High Efficiency and Multi-Band/Multi-Mode Power Amplifier ...

引用

European Microwave Conference (EuMC 2010)

作者： Jangheon Kim Farouk Mkadem Slim Boumaiza Telecommunication System Division Digital Media & Communication Business Samsung Electronics Co. Ltd Department of Electrical and Computer Engineering University of Waterloo

ISBN: (纸本)9781424472321

关键词： WCDMA second harmonics frequency ranges Nylons Power amplifiers stopping Long Term Evolution operation mode

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An Intelligence Audio Watermarking Based on DWT- SVD Using ATS

An Intelligence Audio Watermarking Based on DWT- SVD Using A...

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GCIS, WRI Global Congress on Intelligent systems

作者： Sartid Vongpraphip Mahasak Ketcham Digital System Engineering Laboratory Department of Computer Engineering Faculty of Engineering Chulalongkom University Bangkok Thailand

All three, discrete wavelet transform (DWT)-singular value decomposition (SVD) and adaptive tabu search (ATS) have been used as mathematical tools for embedding data into an audio signal. In this paper, we present a new robust audio watermarking scheme based on DWT-SVD and ATS. After applying the DWT to the cover audio signal, we map the DWT coefficients, and apply the SVD, we search for the optimal intensity of audio watermarking by using the ATS. Experimental results show that the watermarking method performs well in both security and robustness to many digital signals processing, such as filtering, cropping, mp3 and random noise.

关键词： Watermarking Discrete wavelet transforms Data engineering Singular value decomposition Matrix decomposition Intelligent systems Data security Multimedia systems Internet Copyright protection

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Motion vector coding using optimal predictor

Motion vector coding using optimal predictor

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IEEE International Conference on Image Processing

作者： Jungyoup Yang Kwanghyun Won Yung-Lyul Lee Byeungwoo Jeon School of Information and Computer Engineering Sungkyunkwan University South Korea Digital Media System Laboratory Department of Computer Engineering Sejong University South Korea

In this paper, we propose a new motion vector coding scheme using optimal predictor. To improve coding performance of motion vector data, the proposed encoder selects an optimal predictive motion vector that produces minimum bits for the given motion vector. The proposed decoder estimates the optimal predictive motion vector without additional information from encoder for indicating which predictor is used. Experimental results show that the proposed scheme is very effective in reducing coded motion vector data since it achieves BDBR (Bjøntegaard Delta Bit Rate) gain of about 4.46% on average compared to the KTA 2.0 software.

关键词： Decoding Automatic voltage control Software tools Adaptive filters Motion estimation Bit rate Software standards Standards development Video coding Software performance

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Dynamic average modeling of line-commutated converters for power systems applications

Dynamic average modeling of line-commutated converters for p...

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2009 IEEE Power and Energy Society General Meeting, PES '09

作者： Chiniforoosh, S. Jatskevich, J. Dinavahi, Venkata Iravani, Reza Martinez, Juan A. Ramirez, Abner Rezaei-Zare, Afshin Yazdani, Amirnaser Gole, Ani Karimi, Houshang Mahseredjian, Jean Schoder, Karl Naredo, Luis Rioual, Michel Abdulsalam, Sami A. Filizadeh, Shaahin Chiniforoosh, Sina Noda, Taku Department of Electrical and Computer Engineering University of British Columbia Vancouver BC V6T1Z4 Canada Working Group on Modeling and Analysis of System Transients Using Digital Programs General Systems Subcommittee T and D Committee Canada

ISBN: (纸本)9781424442416

Detailed switch-level models of high-pulse-count converters are relatively straightforward to implement using commonly available simulation packages used for digital time-domain simulations and studying of power systems transients. However, such models are computationally intensive due to switching, and could become the bottle-neck for system-level studies with large number of components and controllers. This paper describes approaches for developing dynamic average-value models, i.e., the analytical derivations and parametric modeling. The resulting approximate models do not represent switching but still capture the transient behavior of the original converter circuit. The paper presents the results for 3- and 6-phase rectifiers implemented in PSCAD/EMTDC and Matlab/Simulink and shows that dynamic average models can be very effective. The paper also shows that as the number of pulses/phases increases, so does the complexity of switching pattern that defines the operating modes. ©2009 IEEE.

关键词： Bottles

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