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International Conference on Pervasive Computing and Applications (ICPCA)

作者： Yun Cheng Silian Xie Jianjun Guo Zhiying Wang Minlian Xiao College of Computer National University of Defense Technology Changsha China Department of Communication and Control Engineering Science and Technology Hunan Institute of Humanities Loudi China Department of Computing Hunan Institute of Humanities Science and Technology Loudi China

The high encoding efficiency of H.264 comes from many new video encoding technologies such as adopting variable block size in the process of motion estimation and compensation. But this increases the complexity of H.264 encoder greatly. The high encoding complexity limits the application of H.264 in the domain of real time video encoding. In order to decrease the complexity of H.264 encoder greatly, this paper proposes a fast inter mode selection algorithm to speed up the H.264 encoder. Experimental results show that the proposed algorithm can reduce the complexity of the inter mode decision remarkably while incurring little, if any, loss in quality

关键词： Encoding Motion estimation MPEG 4 Standard Video compression Pervasive computing Decoding Testing High definition video HDTV Video coding

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Development of intelligent setting system for fracture based on x-ray image

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Journal of Physics: Conference Series 2006年第1期48卷 1137-1141页

作者： Zheng, W. Zhang, Y. Liu, J. Yu, G. Hebei University College of Electronic and Information Engineering Baoding 071002 China Harbin University of Science and Technology Measurement Control Technology and Communications Engineering College Harbin 150040 China Harbin Institute of Technology School of Electrical Engineering and Automation Harbin 150001 China Harbin Fifth Hospital Department of Orthopedics Harbin 150040 China

In order to achieve micro-wound, intelligence and high efficiency for fracture setting, intelligent setting system for fracture is proposed in accordance with biomechanics and fracture therapy theory. In the comprehensive medical system based on C-shape-arm X-machine, image processing and analysis is the core, programmable logical controller and stepping motor are important driving parts controlling mechanical parts. Six degree of freedom dynamics sensor ensures to control accurately force and moment. On the foundation of analyzing X-ray image peculiarities, method of processing and analysis is put forward, combining time domain with frequency domain. After mining domain knowledge in depth, setting actions is quantized into three non-continuous steps and is parameterized into two angles and one distance aiming at femoral-neck fracture. Objective features are extracted by virtue of three power polymerization curved surface fitting. Master-slave reference frame is advanced to solve a question that basic standard for parameters calculation is difficult to be determined. At the same time, four-groupsixteen-frame algorithm is put forward to solve a problem that the load value is unable to be calculated and applied precisely in the process of treatment of delayed union and non-union of fracture. Clinic experience proved that the system can help orthopedist to correctly and reliably complete fracture setting. And the system has many advantages such as micro-wound, low medical cost and low infection ratio, in comparison with traditional operation setting and manipulator setting. © 2006 IOP Publishing Ltd.

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Research on algorithm of steganography based on palette image

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Huadong Ligong Daxue Xuebao /Journal of East China University of Science and technology 2006年第12期32卷 1487-1490页

作者： Zhou, Zhi-Ping Lin, Jia-Jun Wang, Yong-Zhi School of Information Science and Engineering East China University of Science and Technology Shanghai 200237 China College of Communication and Control Engineering Southern Yangtze University Wuxi 214122 China

There are fewer colors in palette images than in true color images. Stego images may have poor security if they come from embedding message into palette images. Hence, a novel color pairs constructing algorithm is proposed to improve the security of information hiding. The simulation results verify the effective of the present algorithm in the security.

关键词： Frequency distribution Information hiding Palette image Steganography

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Modelling & simulation of novel three arm MEMS actuators & its application

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Journal of Physics: Conference Series 2006年第1期34卷 436-441页

作者： Pandiyan, Jagadeesh Umapathy, M. Balachandar, S. Arumugam, M. Ramasamy, S. Gajjar, Nilesh C. Larsen and Toubro Limited E-Engineering Solutions Vadodara-391740 Gujarat NH-8 Chhani India Department of Instrumentation and Control Engineering National Institute of Technology Tiruchirappalli-620015 Tamilnadu India Department of Electronics and Communication Engg. Arunai Engineering College Tiruvannamalai-606603 Tamilnadu India R and D Arunai Engineering College Tiruvannamalai-606603 Tamilnadu India Department of Electrical and Electronics Engineering N P A Centenary Polytechnic Kotagiri-643217 Tamilnadu India Department of Mechanical Engineering Institute of Technology Nirma University Ahmedabad -382481 Gujarat India

This paper presents the design and Finite Element Model (FEM) simulation of a novel electrothermal microactuators and arrays. It is a single material microactuator which deflects at its tips by differential thermal expansion of its constituent parts. The electrothermal actuator consists of three thin arms, three thin blades and two electrical connection pads. The goal of this coupled electrothermal actuator design was to multiply the force by adding the individual contributions of all the three actuators. The difference in magnitude of blade deflections depends on the geometrical characteristics of the actuators. The thermal deformation and thermal stability are easily controllable. The simulation employing ANSYS/Multiphysics software results include force, deflection, thermal stress, ideal electrothermal actuator and array geometries. The main advantage of this electrothermal actuator is large deflection of blades with very low actuation voltage in comparison with electrostatic actuators. A typical application in a micromirror is shown to illustrate the utility of these actuators and arrays. © 2006 IOP Publishing Ltd.

关键词： Electrothermal actuator Finite Element Model Heatuators Microactuator Micromirror

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Design of industrial vibration transmitter using MEMS accelerometer

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Journal of Physics: Conference Series 2006年第1期34卷 442-447页

This paper presents the overall design of an industrial vibration transmitter using Micro Electro Mechanical System (MEMS) capacitive accelerometer. It describes the accelerometer sensor interfacing circuit, rms-to-dc converter and voltage to current loop converter circuit design, calibration procedure and mounting methods. The industrial vibration transmitter output can be customized to obtain either acceleration or velocity with root mean square (rms) or peak (pk) value signal. The electronic circuit was designed to measure vibration in motion. The output of the transmitter is a current signal (4-20mA) which is proportional to input acceleration (0-10g rms). The AC coupling circuit for accelerometer sensor interfacing, RMS detector and industrial current loop converter circuit are implemented in a single printed circuit board. The prototype consists of 2 pin top connector for power input (24VDC), current output signal and stainless steel mechanical housing assembly with bottom thread connection for mounting. The loop powered acceleration vibration transmitter is employed for vibration monitoring and control applications. Keywords: Vibration transmitter, MEMS, capacitive accelerometer, AC coupling, RMS detector, current loop converter, condition monitoring. © 2006 IOP Publishing Ltd.

关键词： AC coupling Capacitive accelerometer Condition monitoring Current loop converter MEMS RMS detector Vibration transmitter

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Announcements, comments, and acknowledgments

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AIAA Journal 2006年第1期44卷 1-10页

作者： Oran, Elaine Kailasanath, Kazhikathra Aggarwal, Suresh K. Ahmadian, Mehdi Alexandrov, Natalia Auweter-Kurtz, Monika Bailly, Christophe Balachandran, Balakumar Berman, Alex Candler, Graham V. Chelliah, Harsha K. Chokani, Ndaona Fujii, Kozo Gaitonde, Datta V. Ghia, Kirti Karman N. Givi, Peyman Gore, Jay P. Kaplan, Carolyn R. Livne, Eli Lucht, Robert P. Messac, Achille Wing, N.G. Palazotto, Anthony N. Pierre, Christophe Plotkin, Allen Roy, Ajit K. Saigal, Sunil Sforza, Pasquale M. Shivakumar, Kunigal N. So, Ronald M.C. Springer, Anthony M. Anatolitumin, Anthony M. Zhong, Xiaolin United States Division of Computational Physics United States United States AIAA United States APS United States National Academy of Engineering United States Center for Reactive Flow and Dynamical Systems Naval Research Laboratory United States Institute of Physics Department of Mechanical Engineering University of Illinois at Chicago United States ASME Combustion Institute Department of Mechanical Engineering Virginia Polytechnic Institute State University United States Aeronautics Systems Analysis Branch NASA Langley Research Center United States SIAM ISSMO Aerospace Engineering Institute of Space Systems Universität Stuttgart Germany Amelia Earhart Italy International Amelia Earhart Award Committee Italy France France Mechanical Engineering University of Maryland College Park United States AAM SPIE ASA ASME Technical Committees of Multi-Body Systems Nonlinear Dynamics Dynamics and Control of Structures and Systems American Helicopter Society United States Aerospace Engineering and Mechanics University of Minnesota United States AIAA Thermophysics Technical Committee Mechanical and Aerospace Engineering University of Virginia United States AIAA Propellants and Combustion Technical Committee AIAA's Transition Study Group Aerodynamics Measurement Technology Technical Committee Thermophysics Technical Committee Japan MOSAIC project on the Technology Pressure-sensitive Paint Measurement System Japan High-Speed Flows Group Air Vehicles Directorate Air Force Research Laboratory Wright-Patterson Air Force Base United States Wright State University United States Aerospace Engineering and Engineering Mechanics United States United States Mechanical Engineering University of Pittsburgh United States School of Mechanical Engineering Purdue University United States Committee on Heat Transfer in Fire and Combustion Systems Japan Board of Advisors Central States Section Combustion Institute United States AIChE United States Tau Beta Pi United States

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关键词： Institute of Space and Astronautical Science American Society of Mechanical Engineers Direct Numerical Simulation Aerospace engineering MDO Propellant Air Forces Aerodynamics Heterogeneous Combustion NASA Langley Research Center

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Novel iris recognition method

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Guangdian Gongcheng/Opto-Electronic engineering 2005年第5期32卷 89-92页

作者： Zhang, Peng-Fei Li, De-Sheng Wang, Qi Department of Automation Measurement and Control Harbin Institute of Technology Harbin 150001 China College of Mechanical Engineering and Applied Electronic Technol. Beijing University of Technology Beijing 100022 China

A novel iris recognition method based on multi-texture feature fusion is presented in the paper. The extraction of the texture features with different resolutions in different directions are carried out by performing Gabor wavelet transform for iris image and the extracted features are used as global features of iris. The local features of iris are extracted by applying gray scale level Co-Occurrence Matrix (COM) to the filtered sub-window image. The global features and local features will be recognized and sorted by weighting Euclidean distance and the minimum distance, respectively. A sorting method with Fuzzy Inference System (FIS) feature fusion is designed to improve the robustness of iris recognition. Experimental results show that the method is effective and feasible with recognition ratio up to 98.5%, False Acceptance Rates (FAR) lower than 0.1% while False Rejection Rates (FRR) keeping 1.4%.

关键词： Feature extraction Feature fusion Image preprocessing Iris recognition

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Investigation of a phenylalanine-biosensor system for phenylketonuria detection

Investigation of a phenylalanine-biosensor system for phenyl...

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2005 27th Annual International Conference of the engineering in Medicine and Biology Society, IEEE-EMBS 2005

作者： Wang, Zhuo Chen, Ya-Zhu Zhang, Su Zhou, Zhen Biomedical Instrument Institute Shanghai Jiaotong University 1954 Huashan Rd. Shanghai 200030 China College of Measure-control Technology and Communication Engineering Harbin University of Science and Technology 52 Xuefu Rd. Harbin Heilongjiang 150080 China

ISBN: (纸本)0780387406

Detection and prevention of Phenylketonuria (PKU) is becoming more and more important. However, the current methods are either imprecise or time-consuming. We propose a biosensor system based on phenylalanine ammonia-lyase (PAL) immobilized on an ammonia electrode to measure blood phenylalanine for PKU prevention. The biosensor exhibits good linearity from 10-5000μM and the response time is only about 2 minutes. It remains stable for at least 5 days and less than 20% drop of the original activity after ten day storage at 4, while the service life of the biosensor could be up to 30 days. We also develop an intelligent system to ensure optimal conditions for operation and preservation of the biosensor and to make detection more convenient and reliable. All of these advantages indicate that the newly developed method could be a better one for solving the problems of PKU detection. © 2005 IEEE.

关键词： Biosensors

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Performance analysis of an adaptive medium access control protocol for robot communication

Performance analysis of an adaptive medium access control pr...

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International Conference on Parallel and Distributed Systems (ICPADS)

作者： Junpei Arai Akio Koyama L. Barolli Graduate School of Science and Engineering Yamagata University Japan Department of Information and Control Engineering Yamagata College of Industry and Technology Japan Department of Informatics Yamagata University Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Japan

In autonomous distributed robot systems, many robots cooperate together to carry out many difficult tasks that single robot can not realize. But, in order to cooperate together the robots should communicate with each other. Therefore, the communication among robots is very important problem to be solved. In this paper, we propose an adaptive reservation-time division multiple access (AR-TDMA) medium access control protocol. We carried out computer simulation to evaluate the performance of proposed method. The simulation results show that the proposed protocol has better scalability characteristics and object transportation time compared with a conventional protocol.

关键词： Performance analysis Programmable control Adaptive control Media Access Protocol Access protocols Robots Transport protocols Computer simulation Computational modeling Scalability

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A new MAC protocol for robot communication and its performance evaluation

A new MAC protocol for robot communication and its performan...

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International Conference on Distributed Computing Systems Workshop

作者： J. Arai A. Koyama L. Barolli Graduate School of Science and Engineering Yamagata University Japan Department of Information and Control Engineering Yamagata College of Industry and Technology Japan Department of Informatics Yamagata University Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Japan

In autonomous distributed robot systems, many robots cooperate together to carry out many difficult tasks that single robot cannot realize. But, in order to cooperate together the robots should communicate with each other. Therefore, the communication among robots is very important problem to be solved. In this paper, we propose and evaluate an adaptive reservation-time division multiple access (AR-TDMA) medium access control protocol. We carried out computer simulation to evaluate the performance of proposed protocol. The simulation results show that the proposed protocol has better transmission characteristics compared with a conventional protocol.

关键词： Media Access Protocol Access protocols Service robots Medical robotics Multiaccess communication Mobile communication Time division multiple access Robot sensing systems control engineering Educational institutions

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