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Hardware implementation of fuzzy flip-flops based on lukasiewicz norms

Hardware implementation of fuzzy flip-flops based on lukasie...

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作者： Lovassy, Rita Zavala, Antonio Hernández Gál, László Nieto, Oscar Camacho Kóczy, László T. Batyrshin, Ildar Inst. of Informatics Electrical and Mechanical Engineering Faculty of Engineering Sciences Széchenyi István University Gyor Hungary Inst. of Microelectronics and Technology Kandó Kálmán Faculty of Electrical Engineering Óbuda University Budapest Hungary Dept. of Electronics Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas Instituto Politécnico Nacional Mexico Dept. of Technology Informatics and Economy University of West Hungary Hungary Dept. of Microelectronics and Embedded Systems Centro de Investigación en Computación Instituto Politécnico Nacional Mexico Dept. of Telecommunication and Media Informatics Budapest University of Technology and Economics Hungary Instituto Mexicano del Petroleo Mexico

ISBN: (纸本)9789604741731

The digital hardware implementation of various fuzzy operations furthermore of fuzzy flip-flops has been the subject of intense study and application. The fuzzy D flip-flop derived from fuzzy J-K one is a single input - single output unit with sigmoid transfer characteristics in some particular cases, proper to use as neuron in a Fuzzy Neural Networks (FNN). In this paper we propose the hardware realization of fuzzy D flip-flops based on Lukasiewicz norms.

关键词： Fuzzy neural networks

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Disturbance Decoupling of Switched Linear Systems

Disturbance Decoupling of Switched Linear Systems

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2010 49th IEEE Conference on Decision and Control

作者： E. Yurtseven W.P.M.H. Heemels M.K. Camlibel Eindhoven University of Technology Dept. of Mechanical Engineering Hybrid and Networked Systems group The Netherlands University of Groningen Inst. of Mathematics and Computer Science Groningen The Netherlands

ISBN: (纸本)9781424477456

In this paper we consider disturbance decoupling problems for switched linear systems. We will provide necessary and sufficient conditions for three different versions of disturbance decoupling, which differ based on which signals are considered to be the disturbance. In the first version the continuous exogenous input is considered as the disturbance, in the second the switching signal and in the third both of them are considered as disturbances. The solutions of the three disturbance decoupling problems will be based on geometric control theory for switched linear systems and will entail both mode-dependent and mode-independent static state feedback.

关键词： Disturbance decoupling switched linear systems invariant subspaces geometric control theory

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A simple youla-parametrized mimo regulator

A simple youla-parametrized mimo regulator

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12th IASTED International Conference on Control and Applications, CA 2010

作者： Keviczky, L. Bányás, C. Comp. and Automat. Res. Inst. of the Hungarian Ac. of Sci. Control Engineering Res. Group of the HAS Dept. of Automation and Informatics Budapest Univ. of Technology and Economics Kende u 13-17 H-1111 Budapest Hungary

The classical Youla-parametrization is extended for multivariable linear dynamic processes. The regulator design method uses the simplest naive plant model, which can be easily handled in MATLAB computations.

ISBN: (纸本)9780889868526

关键词： MIMO systems

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COVER SONG DETECTION: FROM HIGH SCORES TO GENERAL CLASSIFICATION

COVER SONG DETECTION: FROM HIGH SCORES TO GENERAL CLASSIFICA...

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IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Suman Ravuri Daniel P.W. Ellis Intl. Computer Science Inst. UC Berkeley Dept. of Electrical Engineering Berkeley CA LabROSA Columbia University Dept. of Electrical Engineering New York NY

ISBN: (纸本)9781424442959;9781424442966

Existing cover song detection systems require prior knowledge of the number of cover songs in a test set in order to identify cover(s) to a reference song. We describe a system that does not require such prior knowledge. The input to the system is a reference track and test track, and the output is a binary classification of whether the inputs are either a reference and a cover or a reference and a non-cover. The system differs from state-of-the-art detectors by calculating multiple input features, performing a novel type of test song normalization in order to combat against."impostor" tracks, and performing classification using either a support vector machine (SVM) or multi-layer perceptron (MLP). On the covers80 test set, the system achieves an equal error rate of 10percent, compared to 21.3percent achieved by the 2007 LabROSA cover song detection system.

关键词： Cover songs music information retrieval Music information retrieval Songs Support Vector Network Detection systems Error analysis Prior Learning Test tracks TEST SETS

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Implementing a Mobile Campus Using MLE Moodle

Implementing a Mobile Campus Using MLE Moodle

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International Conference on P2P, Parallel, Grid, Cloud and Internet Computing (3PGCIC)

作者： Fatos Xhafa Santi Caballé Isaac Rustarazo Leonard Barolli Department of Languages and Informatics Systems Technical University of Catalonia Spain Dept. of Languages and Informatics Systems Technical University of Catalonia Spain Department of Computer Science Multimedia and Telecommunication Open University of Catalonia Spain Dept. of Computer Science Multimedia and Telecommunication Open University of Catalonia Spain Dept. of Information and Communication Engineering Fukuoka Institute of Technology Japan

Mobile learning is considered the next step of online learning by incorporating mobility as a key requirement. Indeed, the current wide spread of mobile devices and wireless technologies brings an enormous potential to e-learning, in terms of ubiquity, pervasiveness, personalization, flexibility, and so on. For this reason, Mobile Learning is attracting significant research efforts covering a fairly variety of learning settings, from schools and universities to workplaces and cities. This research has evidenced that mobile technology can offer new opportunities for learners to learn inside and beyond the traditional inst.uctor-oriented educational paradigm. However, mobile technologies are still in its infancy and many challenges arise. In this paper we analyze, from both learning and technological perspectives, the development of learning applications using mobile devices. To this end, proxy and proxy less architectures are considered as way to extend traditional virtual campuses with mobile clients. The objective is twofold: to access learning materials and to support learning activities. A prototype of a Virtual Campus is developed using MLE-Moodle -the Mobile Learning module of Moodle. The proposed Virtual Campus enables mobile clients to perform online learning activities and is a step towards achieving the “anytime, anywhere” paradigm.

关键词： Mobile communication Mobile handsets computer architecture Servers Context Collaboration Mobile computing

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Video network traffic and quality comparison of VP8 and H.264 SVC

Video network traffic and quality comparison of VP8 and H.26...

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3rd Workshop on Mobile Video Delivery, MoViD 2010, Co-located with ACM Multimedia 2010

作者： Seeling, Patrick Fitzek, Frank H.P. Ertli, Gergö Pulipaka, Akshay Reisslein, Martin Dept. of Computing and New Media Technologies University of Wisconsin-Stevens Point Stevens Point WI 54481 United States Dept. of Electronic Systems University of Aalborg Aalborg DK-9220 Denmark Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics György square 3 1111 Budapest Goldmann Hungary School of Electrical Computer and Energy Engineering Arizona State University Tempe AZ 85287-5706 United States

ISBN: (纸本)9781450301657

Google has recently released the video compression format VP8 to the open source community. This new compression format competes against.the existing H.264 video standard developed by the ITU-T Video Coding Experts Group (VCEG) in collaboration with the ISO/IEC Moving Picture Experts Group (MPEG). This paper compares these two video coding standards in terms of video bit rate-distortion (quality) performance and the video network traffic variability with different long video sequences. We find that VP8 presently does not fulfill its promise to achieve twice the quality at half the bandwidth compared to H.264. The rate-distortion (RD) performance of VP8 is rather slightly below the RD performance of H.264. On the positive side, in contrast to H.264, VP8 has no license fees.

关键词： Image compression

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Astrophysical particle simulations with custom GPU clusters

Astrophysical particle simulations with custom GPU clusters

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10th IEEE International Conference on computer and Information technology, CIT-2010, 7th IEEE International Conference on Embedded Software and Systems, ICESS-2010, 10th IEEE Int. Conf. Scalable Computing and Communications, ScalCom-2010

作者： Spurzem, R. Berczik, P. Nitadori, K. Marcus, G. Kugel, A. Männer, R. Berentzen, I. Klessen, R. Banerjee, R. National Astronomical Observatories of China Chinese Academy of Sciences 20A Datun Rd. Chaoyang District Beijing 100012 China Astronomisches Rechen-Institut ZAH University of Heidelberg Monchhofstr. 12-14 69120 Heidelberg Germany Kavli Institute for Astronomy and Astrophysics Peking University China RIKEN Institute Tokyo Japan Dept. of Computer Science V Central Inst. of Computer Engineering University of Heidelberg Mannheim Germany Inst. für Theor. Astrophysik ZAH University of Heidelberg Germany

ISBN: (纸本)9780769541082

We present our new parallel GPU clusters in Beijing and Heidelberg and demonstrate the nearly optimal speedup and performance for parallel direct astrophysical N-body simulations with up to six million bodies. We reach about 1/3 of the peak performance for a real application code. The clusters are used to simulate dense star clusters with many binaries and galactic nuclei with supermassive black holes, in which correlations between distant particles cannot be neglected. © 2010 IEEE.

关键词： Graphics processing unit

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Active contours in optical flow fields for image sequence segmentation

Active contours in optical flow fields for image sequence se...

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IEEE International Symposium on Biomedical Imaging

作者： Thomas Sangild Sørensen Karsten Østergaard Østergaard Noe Christian P.V. Christoffersen Martin Kristiansen Kim Mouridsen Ole Østerby Lau Brix Dept. Computer Science Aarhus Denmark Inst. Clinical Medicine Aarhus University Denmark The Alexandra Institute Aarhus Denmark Department of Clinical Engineering Aarhus Denmark Dept. of Clinical Engineering Aarhus Denmark

Using variational calculus we develop an active contour model to segment an object across a number of image frames in the presence of an optical flow field. We define an energy functional that is locally minimized when the object is tracked across the entire image stack. Unlike classical snakes, image forces and regularization terms are integrated over the full set of images in the proposed model. This results in a new formulation of active contours. The method is demonstrated by segmenting the ascending aorta in a phase-contrast cine MRI dataset. Techniques to compute the required optical flow field and a “one-click” contour initialization step are suggested for this particular modality.

关键词： Active contours Image motion analysis Image sequences Image segmentation Biomedical optical imaging Optical computing Calculus Biomedical imaging Magnetic resonance imaging computer science

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An FPGA implementation of real-time retinex video image enhancement

An FPGA implementation of real-time retinex video image enha...

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作者： Tsutsui, Hiroshi Nakamura, Hideyuki Hashimoto, Ryoji Okuhata, Hiroyuki Onoye, Takao Dept. of Communications and Computer Engineering Graduate School of Informatics Kyoto University Yoshida Honmachi Sakyo Kyoto 606-8501 Japan Dept. of Information Systems Engineering Graduate School of Information Science and Technology Osaka University 1-5 Yamadaoka Suita Osaka 565-0871 Japan Synthesis Corporation Awajimachi TC Bldg. Awajimachi 2-6-9 Chuo-ku Osaka 541-0047 Japan

ISBN: (纸本)9781424496730

In this paper, we present an FPGA implementation of real-time Retinex video image enhancement. Our implementation is based on the previously proposed architecture, which can handle the variational approach of the Retinex theory. In order to efficiently reduce the enormous computational cost required for image enhancement, processing layers and repeat counts of iterations are determined in accordance with software evaluation result. As for processing architecture, our pipelining architecture can handle high resolution pictures in real-time. Our FPGA implementation supports WUXGA (1,920x1,200) 60 fps as well as 1080p60. © 2010 TSI Press.

关键词： Image enhancement

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Robustness of Fuzzy Flip-Flop based Neural Networks

Robustness of Fuzzy Flip-Flop based Neural Networks

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International Symposium on Computational Intelligence and informatics

作者： Rita Lovassy László T Kóczy László Gál Inst. of Microelectronics and Technology Kandó Kálmán Faculty of Electrical Engineering Óbuda University Budapest Hungary Electrical Engineering and Information Technology Szechenyi István University Hungary Dept. of Telecommunications and Media Informatics Budapest University of Technology and Economics Hungary Department of Technology Informatics and Economy University of West Hungary Hungary Dept. of Technology Informatics and Economy University of West Hungary

In this paper the robustness of three different types of Fuzzy Flip-Flop based Neural Network (FNN) and the standard tansig based neural networks is compared from the various test function approximation goodness points of view. It is tested how well the fuzzy flip-flop based and the simulated neural networks handle the test data sets outlier points. The robust design of the FNN is presented, and the best suitable fuzzy neuron type is emphasized. Furthermore, the sensitivity of fuzzy neural networks to the fuzzy neuron type and hidden layers neuron number is evaluated.

关键词： Artificial neural networks Function approximation Neurons Fuzzy neural networks Flip-flops Robustness

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