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29th Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBS 2007), vol.6

作者： Ken'ichi Fujimoto Hirofumi Nagashino Yohsuke Kinouchi Ali A. Danesht Abhijit S. Pandya School of Health Sciences Faculty of Medicine University of Tokushima Tokushima Japan Department of Life System Institute of Technology and Science University of Tokushima Tokushima Japan Department of Communication Sciences and Disorders Florida Atlantic University Boca Raton FL USA College of Engineering and Computer Science Florida Atlantic University Boca Raton FL USA

Tinnitus is the perception of phantom sounds in the ears or in the head. Sound therapy techniques for tinnitus have been proposed. To account for mechanisms of tinnitus generation and the clinical effects of sound therapies from the viewpoint of neural engineering, we have proposed a plastic neural network model for the human auditory system. We found that this model has a bistable state, i.e., a stable oscillatory state and a stable equilibrium (non-oscillatory) state coexist at a certain parameter region. We also found that the oscillation can be inhibited by supplying sinusoidal stimulus, which is hypothesized as sound for treatment of tinnitus, to the model. By hypothesizing that the oscillation and the equilibrium correspond to generation and inhibition of tinnitus, respectively, we reported that these phenomena could explain the fact that the habituated human auditory system temporarily halts perception of tinnitus following sound therapy. This paper describes dynamical properties of the model and inhibition of the oscillation for two kinds of noise stimuli which correspond to sound for treatment of tinnitus in clinical. Through numerical simulations we found that adequate noise stimulus can inhibits the oscillation.

关键词： Plastics Neural networks Medical treatment Acoustic noise Humans Auditory system Imaging phantoms Ear Neural engineering Numerical simulation

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Filtering of discrete linear repetitive processes with ∞ and 2-∞ performance

Filtering of discrete linear repetitive processes with ∞ an...

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2007 IEEE International Symposium on Circuits and systems, ISCAS 2007

作者： Ligang, Wu Lam, James Paszke, Wojciech Galkowski, Krzysztof Rogers, Eric Kummert, Anton Space Control and Inertial Technology Research Center Harbin Institute of Technology Harbin 150001 China Department of Mechanical Engineering University of Hong Kong Pokfulam Road Hong Kong Hong Kong Institute of Control and Computation Engineering University of Zielona Góra 65-246 Zielona Góra Poland School of Electronics and Computer Science University of Southampton Southampton SO17 IBJ United Kingdom University of Wuppertal Faculty of Electrical Information and Media Engineering Communication Theory

This paper considers the general filtering problem for a distinct class of two-dimensional (2-D) discrete linear systems, i.e. information propagation in two independent directions, known as discrete linear repetitive processes which are of both system-theoretic and applications interest. In particular, new results on the design of filters with guaranteed levels of performance are developed. These take the form of algorithms for the design of an ∞ and 2-∞ dynamic output feedback filter which guarantees that the resulting filtering error process is stable and has prescribed disturbance attenuation performance as measured by ∞ and 2- ∞ norms. © 2007 IEEE.

关键词： Signal filtering and prediction

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Ionospheric GPS-TEC during the 2004 major storm events at Scott Base station Antarctica

Ionospheric GPS-TEC during the 2004 major storm events at Sc...

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IEEE International Conference on Telecommunications and Malaysia communications (ICT-MICC)

作者： Sumazly Sulaiman Mohd Alauddin Mohd Ali Baharudin Yatim Computer Science Departmen Universiti Malaysia Terengganu Kuala Lumpur Terengganu Malaysia Electrical Electronic and System Department Faculty of Engineering Universiti Kebangsaan Malaysia Malaysia Institute of Space Sciences Universiti Kebangsaan Malaysia Malaysia

In this work, we investigate the characteristics of the 2004 major storm events based on GPS-TEC measurement at Scott Base station Antarctica (77.9degS, 166.8degE). The F2 layer critical frequencies and peak height during the storm from the ionosonde measurement at the station are also investigated. Our main emphasis was on the characteristics and response during major storms events. Our results include the daily GPS-TEC and F2 layer critical frequencies and peak height from KEL IPS-42 ionosonde measurements at Scott Base station. For the year 2004, 4 storm days are classified as major storms, which have occurred on 27 th July 2004, referred to as Storm-A and on 8 th to 10 th November 2004 referred to as Storm-B. The World Data Center (WDC) Kp, Dst, and Ap highest indices for Storm-A is 9, -197 nT, and 162 respectively while for Storm-B is 9, -373 nT, and 189 respectively. The response of the ionosphere provide us some indicators of the processes and geophysical changes of the Sun-Heliospheric system during the intense geomagnetic storm period.

关键词： Storms Base stations Antarctica Geophysical measurements Geomagnetism Ionosphere Frequency measurement Global Positioning system Electrons Earth

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A Simulation-Based Methodology for Evaluating the DPA-Resistance of Cryptographic Functional Units with Application to CMOS and MCML Technologies

A Simulation-Based Methodology for Evaluating the DPA-Resist...

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International Conference on Embedded computer systems: Architectures, Modeling and Simulation (IC-SAMOS)

作者： Francesco Regazzoni Stephane Badel Thomas Eisenbarth Johann Grobschadl Axel Poschmann Zeynep Toprak Marco Macchetti Laura Pozzi Christof Paar Yusuf Leblebici Paolo Ienne ALaRI - University of Lugano Lugano Switzerland School of Engineering EPFL Lausanne Switzerland Horst Görtz Institute for IT Security Ruhr University Bochum Germany Department of Computer Science University of Bristol United Kingdom. E-mail: johann.groszschaedl@cs.bris.ac.uk C.E. Consulting (Altran Group) Milan Italy Faculty of Informatics University of Lugano Lugano Switzerland School of Computer and Communication Sciences EPFL Lausanne Switzerland

This paper explores the resistance of MOS current mode logic (MCML) against differential power analysis (DPA) attacks. Circuits implemented in MCML, in fact, have unique characteristics both in terms of power consumption and the dependency of the power profile from the input signal pattern. Therefore, MCML is suitable to protect cryptographic hardware from DPA and similar side-channel attacks. In order to demonstrate the effectiveness of different logic styles against power analysis attacks, the non-linear bijective function of the Kasumi algorithm (known as substitution box S7) was implemented with CMOS and MCML technology, and a set of attacks was performed using power traces derived from SPICE-level simulations. Although all keys were discovered for CMOS, only very few attacks to MCML were successful.

关键词： CMOS technology Cryptography CMOS logic circuits Circuit simulation Energy consumption Protection Hardware Performance analysis Algorithm design and analysis Analytical models

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An application of uncertain variables to the implementation of an interacting multi-model based filter for the navigation system of a road vehicle

An application of uncertain variables to the implementation ...

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ITSC 2006: 2006 IEEE Intelligent Transportation systems Conference

作者： Toledo-Moreo, Rafael Zamora-Izquierdo, Miguel A. Gómez-Skarmeta, Antonio F. Department of Information and Communication Engineering Faculty of Computer Science University of Murcia 30071 Murcia Spain

ISBN: (纸本)1424400945

This paper is to present the conclusions obtained from the parametric study of the application of the uncertain variable (UV) theory to the problem of the interactive multi-model method (IMM) in the navigation system of a road vehicle. The proposed navigation system implements an interactive multi-model method based on a loosely coupled extended Kalman filter architecture (EKF). The descriptions of the navigation system and the representation of the problem based on uncertain variables are presented in this paper. Selected simulations and their conclusions are commented. Finally, this parametric study is presented as a helpful tool for the optimization of an IMM based data fusion algorithm for navigation systems in road vehicles. © 2006 IEEE.

关键词： Navigation systems

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Image restoration for security cameras with dirty lens under oblique illumination

Image restoration for security cameras with dirty lens under...

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IST 2006 - 2006 IEEE International Workshop on Imagining systems and Techniques

作者： Fujii, Yusaku Ohta, Naoya Ito, Tadashi Saitoh, Saburou Matsuura, Tsutomu Yamamoto, Takao Department of Electronic Engineering Faculty of Engineering Gunma University 1-5-1 Tenjin-cho Kiryu Gunma 376-8515 Japan Department of Computer Science Faculty of Engineering Gunma University Department of Electronic Engineering Faculty of Engineering Gunma University Department of Mathematics Faculty of Engineering Gunma University Department of Mechanical System Engineering Faculty of Engineering Gunma University Department of Physics Faculty of Engineering Gunma University

ISBN: (纸本)1424402514

An approach for restoring the images of a suspected person taken by a security camera with dirty lens is proposed In the approach, the peculiar facts concerning the security camera system that all the things in the image except the suspected person itself are usually preserved and that can be used for investigations are to be used as fully as possible. As the first trial for realizing the proposed approach, a method of restoring an image of a person's face taken by a camera with dirty lens under strong oblique illumination is proposed and its practical application is demonstrated experimentally. The importance of pursuing the proposed approach is discussed from the viewpoints of not only the novelty in image processing technology but also the viewpoints of the efficiency in criminal investigation and social security. ©2006 IEEE.

关键词： Image reconstruction

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A new efficient block-matching algorithm for motion estimation

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Journal of VLSI Signal Processing systems for Signal, Image, and Video Technology 2006年第1期42卷 21-33页

作者： Mahmoud, Hanan Goel, Sumeer Shaaban, Mohsen Bayoumi, Magdy Faculty of Engineering University of Alexandria University Buildings 9 Albert Street Semouha Alexandria 21321 Egypt Center for Advanced Computer Studies University of Louisiana at Lafayette 110 Rex Street Lafayette LA 70504 Faculty of Engineering University of Alexandria Computer Science Department Department of Computer Engineering Department of Computer Science Center for Advanced Computer Studies University of Louisiana Lafayette Technical Committee on Circuits and Systems for Communication Technical Committee on Signal Processing Design and Implementation Neural Network and the Multimedia Technology Technical Committees University of Louisiana Lafayette

This paper presents a new full-search block-matching algorithm: Multi-stage Interval-based Motion Estimation algorithm (MIME). The proposed algorithm is a block based motion estimation algorithm that utilizes successive elimination technique. We define two approximate functions, as the upper and lower boundaries of the interval that includes the Conventional distortion metric SAD. Each stage in the proposed algorithm;except for the last stage;incorporates low resolution pixels for the boundary functions calculations. The final stage is a full resolution block matching stage. MIME has a high probability of finding the optimal motion vector at any stage of the algorithm. The proposed algorithm reduces the computational complexity by successively eliminating non-candidate blocks from the search window at each stage. This computational reduction leads to enhanced performance in terms of low power consumption and fast motion vector estimation. A low power VLSI implementation of the algorithm is also presented in this paper. Simulation results on benchmark video sequences shows that MIME algorithm eliminates almost 88% of the candidate blocks after only two interval based stages. © Springer science + Business Media, Inc. 2006.

关键词： Motion estimation

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Image and Signal Processing for Networked eHealth Applications

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2006年

作者： Ilias G. Maglogiannis Kostas Karpouzis Manolis Wallace

ISBN: (数字)9781598290370

E-health is closely related with networks and telecommunications when dealing with applications of collecting or transferring medical data from distant locations for performing remote medical collaborations and diagnosis. In this book we provide an overview of the fields of image and signal processing for networked and distributed e-health applications and their supporting technologies. The book is structured in 10 chapters, starting the discussion from the lower end, that of acquisition and processing of biosignals and medical images and ending in complex virtual reality systems and techniques providing more intuitive interaction in a networked medical environment. The book also discusses networked clinical decision support systems and corresponding medical standards, WWW-based applications, medical collaborative platforms, wireless networking, and the concepts of ambient intelligence and pervasive computing in electronic healthcare systems.

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Optimized NURBS ship hull fitting using simulated annealing

Optimized NURBS ship hull fitting using simulated annealing

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International Conference on computer Graphics, Imaging and Visualisation, CGIV'06

作者： Wen, Ang Swee Shamsuddin, Siti Mariyam Hj. Samian, Yahya Department of Graphics and Multimedia Faculty of Computer Science and Information System Universiti Teknologi Malaysia Department of Marine Technology Faculty of Mechanical Engineering Universiti Teknologi Malaysia

ISBN: (纸本)0769526063

The shape of a NURBS curve or surface is defined by the location of its control points, the control points' weights, and the knot vectors. Most of the curve and surface design tried to modify the control points. However, it is still impossible to obtained accurate control points for a reconstructed NURBS curve or surface. The fitness of these surfaces is generally considered a subjective notion depending on the judgment of the designers (eg. visually pleasing, devoid of unnecessary bumps or wiggles, satisfying certain continuity requirements). One of the restriction in ship hull design is that the existing details of a ship design on paper or a ship that already been constructed physically couldn't be reconstructed accurately and concisely in a ship hull design software. This research strives to solve this problem by creating fair ship hull surface using NURBS. An optimized NURBS ship hull fitting approach using simulated annealing is developed. Evaluation and analysis (accuracy, fairness and speed of processing) on the proposed approach is done.

关键词： Ships

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An efficient method for simplifying decision functions of support vector machines

An efficient method for simplifying decision functions of su...

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作者： Guo, Jun Takahashi, Norikazu Nishi, Tetsuo Department of Computer Science and Communication Engineering Kyushu Univ. Fukuoka-shi 812-8581 Japan Faculty of Science and Engineering Waseda Univ. Tokyo 162-0072 Japan

A novel method to simplify decision functions of support vector machines (SVMs) is proposed in this paper. In our method, a decision function is determined first in a usual way by using all training samples. Next those support vectors which contribute less to the decision function are excluded from the training samples. Finally a new decision function is obtained by using the remaining samples. Experimental results show that the proposed method can effectively simplify decision functions of SVMs without reducing the generalization capability. Copyright © 2006 The Institute of Electronics, Information and communication Engineers.

关键词： Decision theory

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