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Quantitative Evaluation of Spiral Drawing by Patients with Movement Disorder Based on Polar Coordinate System with Varied Origin

Quantitative Evaluation of Spiral Drawing by Patients with M...

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2007 IEEE/ICME International Conference on Complex Medical engineering-CME2007(CME2007 第二届国际复合医学工程学术大会)

作者： B. Wang X.Y. Wang J.Z. Zou F. Shima M. Nakamura Department of Automation East China University of Science and Technology Shanghai 200237 P.R.China Department of Automation East China University of Science and Technology Shanghai 200237 P.R.China Department of Functional Neurosurgery Kaizuka Hospital Fukuoka 812-0053 Japan Department of Advanced Systems Control Engineering Saga University Saga 840-8502 Japan

In this study, quantitative evaluation of spiral drawing by patients with movement disorder was investigated in order to extract characteristics of hand movement disabilities. The hand movement of circular spiral drawing was recorded by a digitized tablet. A method of polar coordinate system with varied origin was proposed for evaluation. A set of characteristic parameters were also defined and calculated. Compare with fixed origin, the variation of radius, origin and degree can be evaluated quantitatively. The proposed method of polar coordinate with varied origin is effective to help clinicians in diagnosing the diseases and inspecting the effectiveness of operation and treatment.

关键词： Spirals Parkinson's disease Hospitals engineering drawings Motion measurement Automation Neurosurgery control engineering Basal ganglia Inspection

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High-pressure study of YH3 by Raman and visible absorption spectroscopy

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Physical Review B 2007年第2期76卷 024107-024107页

作者： Tetsuji Kume Hiroyuki Ohura Shigeo Sasaki Hiroyasu Shimizu Ayako Ohmura Akihiko Machida Tetsu Watanuki Katsutoshi Aoki Kenichi Takemura Department of Materials Science and Technology Faculty of Engineering Gifu University 1-1 Yanagido Gifu 501-1193 Japan Environmental and Renewable Energy Systems Graduate School of Engineering Gifu University 1-1 Yanagido Gifu 501-1193 Japan Synchrotron Radiation Research Center Japan Atomic Energy Agency Hyogo 679-5148 Japan Advanced Materials Laboratory National Institute for Materials Science (NIMS) Tsukuba 305-0044 Japan

Raman and visible absorption spectra of YH3 were measured at high pressures, in order to clarify the structural and electronic phase transitions. The Raman results revealed the presence of an intermediate phase at 9–24GPa between the low-pressure hexagonal and high-pressure fcc phases. The Y-framework structure and the position of interstitial H atoms are changed on the transition to intermediate phase. The results of the absorption measurements demonstrate that the optical band gap starts to close in response to the phase transition.

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Implication of the sidereal anisotropy of ∼5 TeV cosmic ray intensity observed with the Tibet III air shower array

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AIP Conference Proceedings 2007年第1期932卷 283-289页

作者： Amenomori, M. Ayabe, S. Bi, X.J. Chen, D. Cui, S.W. Danzengluobu Ding, L.K. Ding, X.H. Feng, C.F. Feng, Zhaoyang Feng, Z.Y. Gao, X.Y. Geng, Q.X. Guo, H.W. He, H.H. He, M. Hibino, K. Hotta, N. Hu, Haibing Hu, H.B. Huang, J. Huang, Q. Jia, H.Y. Kajino, F. Kasahara, K. Katayose, Y. Kato, C. Kawata, K. Labaciren Le, G.M. Li, A.F. Li, J.Y. Lou, Y.-Q. Lu, H. Lu, S.L. Meng, X.R. Mizutani, K. Mu, J. Munakata, K. Nagai, A. Nanjo, H. Nishizawa, M. Ohnishi, M. Ohta, I. Onuma, H. Ouchi, T. Ozawa, S. Ren, J.R. Saito, T. Saito, T.Y. Sakata, M. Sako, T.K. Sasaki, T. Shibata, M. Shiomi, A. Shirai, T. Sugimoto, H. Takita, M. Tan, Y.H. Tateyama, N. Torii, S. Tsuchiya, H. Udo, S. Wang, B. Wang, H. Wang, X. Wang, Y.G. Wu, H.R. Xue, L. Yamamoto, Y. Yan, C.T. Yang, X.C. Yasue, S. Ye, Z.H. Yu, G.C. Yuan, A.F. Yuda, T. Zhang, H.M. Zhang, J.L. Zhang, N.J. Zhang, X.Y. Zhang, Y. Zhaxisangzhu Zhou, X.X. Department of Physics Hirosaki University Hirosaki 036-8561 Japan Department of Physics Saitama University Saitama 338-8570 Japan Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Faculty of Engineering Yokohama National University Yokohama 240-8501 Japan Department of Physics Hebei Normal University Shijiazhuang 050016 China Department of Mathematics and Physics Tibet University Lhasa 850000 China Department of Physics Shandong University Jinan 250100 China Institute of Modern Physics SouthWest Jiaotong University Chengdu 610031 China Department of Physics Yunnan University Kunming 650091 China Faculty of Engineering Kanagawa University Yokohama 221-8686 Japan Faculty of Education Utsunomiya University Utsunomiya 321-8505 Japan Institute for Cosmic Ray Research University of Tokyo Kashiwa 277-8582 Japan Department of Physics Konan University Kobe 658-8501 Japan Faculty of Systems Engineering Shibaura Institute of Technology Saitama 337-8570 Japan Department of Physics Shinshu University Matsumoto 390-8621 Japan Center of Space Science and Application Research Chinese Academy of Sciences Beijing 100080 China Physics Department Tsinghua University Beijing 100084 China Tsinghua Center for Astrophysics Tsinghua University Beijing 100084 China Advanced Research Institute for Science and Engineering Waseda University Tokyo 169-8555 Japan Advanced Media Network Center Utsunomiya University Utsunomiya 321-8585 Japan National Institute of Informatics Tokyo 101-8430 Japan Tochigi Study Center University of the Air Utsunomiya 321-0943 Japan Tokyo Metropolitan College of Industrial Technology Tokyo 116-8523 Japan Shonan Institute of Technology Fujisawa 251-8511 Japan RIKEN Wako 351-0198 Japan School of General Education Shinshu University Matsumoto 390-8621 Japan

We show that the large-scale anisotropy of ∼5 TeV galactic cosmic ray (GCR) intensity observed by Tibet Air Shower experiment can be reproduced by the superposition of a bi-directional and uni-directional flows (UDF and BDF) of GCRs. The heliosphere is located inside the local interstellar cloud (LIC) very close to the inner edge of the LIC. If the GCR population is lower inside the LIC than outside, the BDF flow is expected from the parallel diffusion of GCRs into LIC along the local interstellar magnetic field (LISMF) connecting the heliosphere with the region outside the LIC, where the GCR population is higher. A type of the UDF, on the other hand, is expected from the B×n drift flux driven by a gradient of GCR density (n) in the LISMF (B). The LISMF orientation deduced from the best-fit direction of the BDF is almost parallel to the galactic plane and more consistent with the suggestion of Frisch (1996) than that of Lallement et al. (2005). We note that the model, if holds, yields the LISMF polarity together with its orientation. © 2007 American Institute of Physics.

关键词： Cosmic rays Extensive air shower

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Approximate decision making by natural language commands for robots

Approximate decision making by natural language commands for...

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IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics

作者： Watanabe, Keigo Jayawardena, Chandimal Izumi, Kiyotaka Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga University Japan

ISBN: (纸本)1424401364

Inferring the correct meaning of natural language commands, as judged by the person who issues commands, is mandatory for natural language commanded robotic systems. There have been some successful research on this;but one of the important and related aspects has not been addressed, i.e. the possibility of learning from natural language commands. Since natural language commands are generated by human users, they contain valuable information. Nevertheless, the learning from such commands, as well as the interpretation of them face many challenges due to the inherent subjectiveness of natural languages. In this paper, we propose a decision making process for natural language commanded robots which is influenced by certain characteristics of human decision making process. The proposed concept is demonstrated with an experiment conducted using a robotic manipulator. First, the robot is controlled with natural language commands to perform some pick and place operations during which the robot builds a knowledge base. After learning, the robot is capable of performing approximately similar tasks by making approximate decisions with the gained knowledge. For the decision making a probabilistic neural network is used. © 2006 IEEE.

关键词： Neural networks

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Structural and optical characterization of high In content cubic InGaN on GaAs(001) substrates by RF-MBE

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physica status solidi c 2007年第7期4卷

作者： Teruyuki Nakamura Yuta Endo Ryuji Katayama Hiroyuki Yaguchi Kentaro Onabe Department of Advanced Materials Science The University of Tokyo 5-1-5 Kashiwanoha Kashiwa-shi 277-8561 Japan Department of Electrical and Electronic Systems Faculty of Engineering Saitama University 255 Shimo-Ohkubo Sakura-ku Saitama-shi 338-8570 Japan

High In content cubic InGaN films have been successfully grown on GaAs(001) substrates by rf-plasma assisted molecular beam epitaxy (RF-MBE). The X-ray diffraction analysis has confirmed the Ga content of the cubic InGaN films increases with increasing the group-III flux ratio (Ga/(Ga+In)). The maximum Ga content of the c-InGaN film is about 29% based on an analysis of the X-ray diffraction 2θ/ω scan. By 2θ/ω and ω X-ray reciprocal space mapping measurements, hexagonal-phase and twin-phase InGaN are found to be generated from c-InGaN{111} facets. By low temperature PL measurement, the c-In 1– x Ga x N peak shifts from 0.41 eV ( x = 0) to 0.72 eV ( x = 0.09) with increasing Ga content, showing that the bandgap of c-InGaN is ∼300meV smaller than that of h-InGaN with the same alloy composition. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

关键词： 61.10.Nz 68.37.Ps 68.55.Jk 78.55.Cr 81.05.Ea 81.15.Hi

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The edge-detecting sensor systems which prevents falls or accidents for the visually impaired for the SICE-ICASE International Joint Conference 2006 (SICE-ICCAS 2006)

The edge-detecting sensor systems which prevents falls or ac...

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SICE Annual Conference

作者： Yoshiaki Hatamochi Katsunori Shida Faculty of Science and Engineering Department of Advanced Systems Control Engineering Graduate School of Saga University Japan

We studied the sensor system which helps visually impaired walk safely and prevents serious accidents on train station platforms. We studied the conventional white stick walk method that requires no special training, is lightweight, and intuitive to use. Furthermore, we recorded how the visually impaired performed during a practical test

关键词： Sensor systems Accidents Testing Sensor phenomena and characterization Infrared sensors Educational institutions Foot Wrist Optical reflection control engineering

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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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An Approach to Estimating Human Behaviors by Using an Active Vision Head

An Approach to Estimating Human Behaviors by Using an Active...

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International Conference on control, Automation, Robotics and Vision (ICARCV)

作者： Keigo Watanabe Kiyotaka Izumi Kei Shibayama Kohei Kamohara Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga University Japan

When an intelligent robot works together with human in a living space, we may often encounter a scene that the robot supports the human behaviors. Understanding of the human behavior is required for the robot to judge what kind of action serves as assistance to the human in such a scene. The present research aims at constructing a system that can understand the human behavior using the time series images for the movement of the human, which can be obtained from an active vision head. The first process estimates the human posture in each frame. The next process divides the basic human action into a posture and a position. The final process estimates the human behavior by examining the action and the target, under the assumption that the human behavior consists of the combination of an action and a behavioral target

关键词： Humans Robot vision systems Orbital robotics Cameras Robot sensing systems Intelligent robots Head Intelligent sensors Layout Space technology

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Neural network learning from hint for the cyclic motion of the constrained redundant arm

Neural network learning from hint for the cyclic motion of t...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： S.F.M. Assal Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga University Japan

A Widrow-Hoff neural network (NN) with an online adaptive learning algorithm derived by applying Lyapunov approach is introduced for the kinematic inversion of redundant arms. The developed approach is designed to enable the manipulator to conserve the joint configuration in cyclic trajectories and to avoid the joint limits. Since the inverse kinematics in this problem has an infinite number of joint angle vectors, a fuzzy neural network (FNN) is designed to provide an approximate value for that vector. Feeding this vector as an additional hint input vector to the NN limits and guides the output of the NN within the self-motion. The derivation of the Lyapunov function which is designed to achieve both of the tasks, leads to a computationally efficient online learning algorithm of the NN. The effectiveness of the developed approach is studied by conducting experiments on the PA-10 redundant manipulator

关键词： Neural networks Kinematics Jacobian matrices Fuzzy neural networks control engineering Programmable control Adaptive control Arm Lyapunov method Algorithm design and analysis

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Approximate Decision Making by Natural Language Commands for Robots

Approximate Decision Making by Natural Language Commands for...

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Annual Conference of Industrial Electronics Society

作者： Keigo Watanabe Chandimal Jayawardena Kiyotaka Izumi Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga University Japan

Inferring the correct meaning of natural language commands, as judged by the person who issues commands, is mandatory for natural language commanded robotic systems. There have been some successful research on this; but one of the important and related aspects has not been addressed, i.e. the possibility of learning from natural language commands. Since natural language commands are generated by human users, they contain valuable information. Nevertheless, the learning from such commands, as well as the interpretation of them face many challenges due to the inherent subjectiveness of natural languages. In this paper, we propose a decision making process for natural language commanded robots which is influenced by certain characteristics of human decision making process. The proposed concept is demonstrated with an experiment conducted using a robotic manipulator. First, the robot is controlled with natural language commands to perform some pick and place operations during which the robot builds a knowledge base. After learning, the robot is capable of performing approximately similar tasks by making approximate decisions with the gained knowledge. For the decision making a probabilistic neural network is used

关键词： Decision making Natural languages Humans Robot control Mobile robots control systems Manipulators Fuzzy control Speech control engineering

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