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Frontiers in Education (FIE) Conference

作者： C.A.P.S. Martins M.B. Carvalho C.V. Pousa D.O. Penha Computer Science Department and Graduate Program in Electrical Engineering (PPGEE) Computational and Digital System Laboratoty (LSDC) Pontifical Catholic University of Minas Gerais Belo Horizonte Minas Gerais Brazil PUC-Minas PPGEE LSDC Belo Horizonte Minas Gerais Brazil Computer Science Department LSDC PUC-Minas Belo Horizonte Minas Gerais Brazil

In this paper we analyze the use of research activities as learning instrument in electrical engineering and computer science. This pedagogic approach was applied in undergraduate disciplines, undergraduate teaching assistance and undergraduate research projects. Our main goals are optimize the learning process using research and motivate the use of research activities as learning instrument.

关键词： Instruments Computer science Education Performance analysis Electrical engineering Learning systems Proposals Humans Microprocessors Cache memory

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Development of single-chip fuzzy controller based on FFSI in binary

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Journal of Harbin Institute of Technology(New Series) 2003年第3期10卷 269-274页

作者：张吉礼欧进萍孙德兴 School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China School of the Civil Engineering Harbin Institute of Technology Harbin 150090 China School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 Chinaength and concise structure of fuzzy logic reasoning program and its real-time reasoning characteristic have their effect on the performance of a digital single-chip fuzzy controller. The control effect of a digital fuzzy controller based on looking up fuzzy control responding table is only relative to the table and not relative to the fuzzy control rules in the practical control process. Aiming at above problem and having combined fuzzy log-ic reasoning with digital operational characteristics of a single-chip microcomputer functioning-fuzzy-subset inference (FFSI) in binary in which triangle membership functions of error and error-in-change are all represented in binary and singleton membership functions of control variable is binary too has been introduced. The circuit principle plans of a single-chip fuzzy controller have been introduced for development of its hardware and the primary program structure fuzzy logic reasoning subroutine serial communication subroutine with PC and reliability design of the fuzzy controller are all discussed in detail. The control of indoor temperature by a fuzzy controller has been conducted using a testing-room thermodynamic system. Research results show that the FFSI in binary can exercise a concise fuzzy control in a single-chip fuzzy controller and the fuzzy controller is therefore reliable and possesses a high performance-price ratio.

Length and concise structure of fuzzy logic reasoning program and its real-time reasoning characteris-tic have their effect on the performance of a digital single-chip fuzzy controller. The control effect of a digitalfuzzy controller based on looking up fuzzy control responding table is only relative to the table and not relative tothe fuzzy control rules in the practical control process. Aiming at above problem and having combined fuzzy log-ic reasoning with digital operational characteristics of a single-chip microcomputer, functioning-fuzzy-subset in-ference (FFSI) in binary, in which triangle membership functions of error and error-in-change are all represen-ted in binary and singleton membership functions of control variable is binary too, has been introduced. The cir-cuit principle plans of a single-chip fuzzy controller have been introduced for development of its hardware, andthe primary program structure, fuzzy logic reasoning subroutine, serial communication subroutine with PC andreliability design of the fuzzy controller are all discussed in detail. The control of indoor temperature by a fuzzycontroller has been conducted using a testing-room thermodynamic system. Research results show that the FFSIin binary can exercise a concise fuzzy control in a single-chip fuzzy controller, and the fuzzy controller is there-fore reliable and possesses a high performance-price ratio.

关键词： functioning-fuzzy-subset inference single-chip fuzzy controller testing-room thermodynamic system indoor temperature experiment

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Human systems integration and advanced technology in engineering department workload and manpower reduction

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NAVAL ENGINEERS JOURNAL 2003年第1期115卷 57-65页

作者： Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d

Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems under conditions of normal steaming and during casualty response will need to be markedly reduced via automated monitoring, autonomous control, and other technology initiatives. Current DDG 51 class ships can be considered as a manpower baseline and under Condition III typical engineering control involves seven to eight watchstanders at manned stations in the Central Control Station, the engine rooms and other machinery spaces. In contrast to this manning level, initiatives such as DD 21 and the integrated engineering plant (IEP) envision a partnership between the operator and the automation system, with more and more of the operator's functions being shifted to the automation system as manning levels decrease. This paper describes some human systems integration studies of workload demand reduction and, consequently, manning reduction that can be achieved due to application of several advanced technology concepts. Advanced system concept studies in relation to workload demand are described and reviewed including. Piecemeal applications of diverse automation and remote control technology concepts to selected high driver tasks in current DDG 51 activities. Development of the reduced ship's crew by virtual presence system that will provide automated monitoring and display to operators of machinery health, compartment conditions, and personnel health. The IEP envisions the machinery control system as a provider of resources that are used by various consumers around the ship. Resource needs and consumer priorities are at all times dependent upon the ship's current mission and the availability of equipment pawnbrokers.

关键词： Naval warfare

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Experimental Study on Wave Interactions with a Fixed Rectangular Barge in a Beam Sea

Experimental Study on Wave Interactions with a Fixed Rectang...

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Proceedings of the Twelfth (2002) International Offshore and Polar engineering Conference

作者： Jung, Kwang Hyo Chang, Kuang-An Chen, Hamn-Ching Huang, Erick T. Ocean Engineering Program Department of Civil Engineering Texas A and M University College Station TX United States Nav. Facilities Eng. Service Center Amphibious System Division Port Hueneme CA United States

This paper presents an experimental study on wave interactions with a rectangular barge in a beam sea condition. Regular waves with a wave period the same as the natural frequency of the barge were used in the experiments due to the fact that the barge is prone to capsizing under such waves. The barge was fixed on the free surface and no wave overtopping was assumed. Particle Image Velocimetry (PIV) was employed to measure the full-field two-dimensional velocity. Since the flow is highly turbulent, the phase-averaging technique was used to the extract the mean flow and turbulence properties. The mean flow pattern, including velocity, vorticity, and streamline, was analyzed to quantify the mechanism of the interactions. The generation and evolution of vorticity and turbulence kinetic energy were demonstrated. The turbulent kinetic energy is found to highly correlate with the vorticity field.

关键词： Water waves

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Mobile multimedia in VESPER Virtual Home Environment

Mobile multimedia in VESPER Virtual Home Environment

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IEEE International Conference on Multimedia and Expo (ICME)

作者： J.M. Oliveira R. Roque E. Carrapatoso H. Portschy D. Hovanyi I. Berenyi INESC Porto Portugal Faculdade de Economia Universidade do Porto Portugal Portugal Telecom Inovação Portugal Program and System Engineering Siemens AG Oesterreich Austria Siemens AG Oesterreich Program and System Engineering Austria

This paper presents the most innovative aspects of a middleware architecture that enables the provision of advanced personalized services in a Virtual Home Environment context. Multimedia considerations to extend the architecture to support mobile multimedia in a ubiquitous access terminal and network environment are also included.

关键词： Multimedia systems Portals Context-aware services Next generation networking Telecommunications systems engineering and theory Middleware Bandwidth Time factors Intelligent networks

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Power assist control for leg with HAL-3 based on virtual torque and impedance adjustment

Power assist control for leg with HAL-3 based on virtual tor...

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IEEE International Conference on systems, Man and Cybernetics

作者： S. Lee Y. Sankai Doctoral Program of System and Information Engineering University of Tsukuba Japan Institute of Systems and Engineering Mechanics University of Tsukuba Ibaraki Japan

This paper describes a method of power assist control for lower body based on neuromuscular signal, s-EMG (surface ElectroMyogram/Myoelectricity), and impedance adjustment around knee joint with the assist system, HAL (Hybrid Assistive Leg) -3 we have developed. Virtual Torque calculated by s-EMG enabled the HAL-3 to be operated as to intention of the experimental subject put on HAL, and assist the motion of lower body by predicting the moment around joints. Besides, the operator was able to swing the leg lighter by reducing the inertia and viscous friction around joint of the subject and HAL-3. In order to verify the proposed method, experiments for simple motion was performed with impedance values found by parameter identification with RLS (Recursive Least Square) method. The evaluation of assisted motion was done by Assist Efficiency (AE) calculated from s-EMG in nearly proportion to the operator's muscle force. The results showed the response of operational signal into actuator with impedance adjustment was improved dramatically, and the amplitudes of s-EMG were reduced significantly, then we could confirm the availability of impedance adjustment.

关键词： Torque control Leg Surface impedance Control systems Neuromuscular Knee Friction Parameter estimation Resonance light scattering Least squares methods

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Interactive music composition system

Interactive music composition system

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IEEE International Conference on systems, Man and Cybernetics

作者： M. Unehara T. Onisawa Master's Program in Science and Engineering Onisawa Laboratory Institute of Engineering Mechanics and System University of Tsukuba Tsukuba Ibaraki Japan Institute of Enginhg Mechanics and System University of Tsukuba Tsukuba Ibaraki Japan

The purpose of this study is to construct an interactive system which composes a musical work satisfying each user. This study makes a great importance to human subjectivity toward music, and constructs a music composition system reflecting each user's feeling. The system uses 3 types of user evaluations toward music to generate 16-bars musical work. The interactive genetic algorithm is applied to the present system, and user evaluations are employed instead of GA's objective fitness functions. In this paper, chromosomes, which have information on 4-bars musical work, are generated in the pool, and the GA operations based on user evaluations are executed to them. From the results of the evaluation experiments, it is found that our system composes music reflecting user's feeling.

关键词： Multiple signal classification Humans Evolutionary computation Art Medical treatment Home computing Reflection Genetic algorithms Computer graphics Music

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A model of implicit association learning based on plasticity in the perirhinal cortex

A model of implicit association learning based on plasticity...

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International Conference on Neural Information Processing

作者： S. Morokami A. Suemitsu M. Morita Doctoral Program in System Information Engineering University of Tsukuba Tsukuba Ibaraki Japan Doctoral Program in Engineering University of Tsukuba Tsukuba Ibaraki Japan Institute of Engineering Mechanics and Systems University of Tsukuba Tsukuba Ibaraki Japan

In the delayed match-to-sample task, responses of inferior temporal neurons to adjacent stimuli in the sequence are correlated to each other when the monkey was trained repeatedly with the sequence of visual stimuli, although the monkey was not required to associate the stimuli with each other. This correlation, however, is not observed for a monkey with lesions of the rhinal cortex, which is not consistently explained by existing models of such correlated responses. In the present study, we construct a model consisting of two networks corresponding to area TE and the perirhinal cortex, and show that perirhinal plasticity may underlie the mechanism of implicit association learning.

关键词： Brain modeling Neurons systems engineering and theory Lesions Tellurium Fractals Testing Delay effects

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Healthcare survey of Pakistan a clinical engineering perspective

Healthcare survey of Pakistan a clinical engineering perspec...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： H.A. Ali S.T. Raza J. Enderle Biomedical Engineering Graduate Program University of Connecticut CT USA Department of Clinical Engineering VA Connecticut Healthcare System West Haven CT USA Graduate School of Biomedical Engineering University of New South Wales Sydney Australia

This paper analyzes and outlines the Clinical engineering Perspective of healthcare and overall economic and social constraints of hospitals in general throughout Pakistan. It also discusses the discipline of Clinical/Biomedical engineering from an educational and professional point of view, and describes routine practices of BMETs in Pakistan and what would the future be after a few years from now. An investigation was made into relationships between the equipment managed by biomedical engineering departments, the resources they had for this work, and the relative size of the hospitals. A survey was conducted involving 25 hospitals throughout the country to rind out these aspects of health care management. Also discussed is the scenario prevailing in hospitals in the country. Hospitals being run by the private sector are managing equipment more efficiently with more biomedical technicians, as compared to the public sector, substantiating the financial constraints of government sector hospitals.

关键词： Medical services Clinical diagnosis Hospitals Biomedical engineering Technology management Government Educational technology Preventive maintenance Australia Resource management

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The effect of shock absorbing prosthetic components on the gaits of persons with lower-extremity amputations

The effect of shock absorbing prosthetic components on the g...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： S.A. Gard R. Konz Lakeside Division VA Chicago Health Care System Chicago USA Prosthetics Research Laboratory & Rehabilitation Engineering Research Program Northwestern University Chicago IL USA

Shock absorbing pylons (SAPs) are components that increase prosthetic compliance and provide shock absorption during walking, running, and other high-impact activities in persons with leg amputations. The purpose of this study was to investigate the effect of SAPs on the gaits of persons who walk with trans-tibial prostheses. Two gait analyses were performed on ten subjects walking with and without an Endolite TT (Telescopic-Torsion) Pylon. Comparison of kinematic and kinetic gait parameters indicated that there were few quantitative changes in the way people walked with and without the SAPs. The most consistent change among subjects was a reduction In the magnitude of an isolated force transient that occurred during the prosthetic loading response phase, an effect that was more evident at higher walking speeds. Results from a questionnaire that was administered to subjects indicated they generally preferred walking with the SAP for reasons related to comfort. We conclude that SAPs may provide significant benefit for persons with trans-tibial amputations who are able to routinely walk at speeds above approximately 1.3 m/sec.

关键词： Electric shock Prosthetics Legged locomotion Poles and towers Absorption Motion analysis Laboratories Leg Performance analysis Kinematics

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