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检索条件"任意字段=Digital Human Modeling for Design and Engineering Symposium"

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Development of man machine interface software for an industrial robot

Development of man machine interface software for an industr...

引用

IEEE International symposium on Virtual Environments, human-Computer Interfaces and Measurement Systems (VECIMS)

作者： E.I. Konukseven A. Abidi Department of Mechanical Engineering Middle East Technical University Ankara Turkey

This paper describes the design and implementation of a man machine interface software for the ABB IRB-2000 industrial robot. The main aim of this software is to provide features which would facilitate on-line/off-line programming of the robot. The software would provide a three dimensional graphical simulation of the robot and its environment, which also allows loading custom designed objects into the simulated environment. The software also offers collision detection capability between graphically simulated objects, an interpreter/editor to interpret/write robot programs in BASIC like language enhanced with robot commands. The facility to control the actual robot through the computer's serial communication port is also provided.

关键词： Man machine systems Computer industry Service robots Robot programming Open source software Robot sensing systems Robotics and automation Mechanical engineering Computational modeling Object detection

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A pocket-PC based navigational aid for blind individuals

A pocket-PC based navigational aid for blind individuals

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IEEE International symposium on Virtual Environments, human-Computer Interfaces and Measurement Systems (VECIMS)

作者： M.H. Choudhury D. Aguerrevere A.B. Barreto Digital Signal Processing Laboratory Biomedical Engineering and Electrical & Computer Engineering Departments Florida International University Miami FL USA

This paper describes a pocket-PC based electronic travel aid (ETA) that helps a blind individual navigate through indoor environments. The system detects surrounding obstacles using ultrasonic range sensors and the travel direction using an electronic compass. The acquired information is processed by a pocket-PC to generate a virtual acoustic environment where nearby obstacles are recognizable to the user. This virtual environment is played back through stereo headphones, so that the user can perceive surrounding obstacles and the direction of the Earth's magnetic North, using spatialized 3D sounds. The paper describes the instrumental and computational aspects of the design and presents the results, demonstrating the improvement in blind travel achieved with the system.

关键词： Navigation Time of arrival estimation Indoor environments Acoustic signal detection Sensor systems Acoustic sensors Virtual environment Headphones Earth Instruments

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Performance analysis of time slicing in DVB-H

Performance analysis of time slicing in DVB-H

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Joint IST symposium on Mobile Future, and the symposium on Trends in Communications, SympoTIC

作者： X.D. Yang Y.H. Song T.J. Owens J. Cosmas T. Itagaki School of Engineering and Design Brunei University Uxbridge Middlesex UK

digital Video Broadcasting for Handhelds (DVB-H) is the latest DVB standard from the DVB Group targeting handheld, battery powered devices such as mobile telephones, PDAs(Personal digital Assistants). etc. DVB-H enables IP data services including low definition TV services to be received on battery powered handheld terminals. Time Division Multiplexing (TOM, is the technology that is usually used in computer and telecommunication systems for resoursce allocation. Time slicing is based on TDM and is one of the characteristics of DVB-H. This paper presents a basic model for predicting the power saving achieved by the time slicing algorithm used in DVB-H followed by analysis of the performance of the algorithm based on simulations using Matlab and Opnet; The simulations required the writing of Matlab and Opnet code to model the effect of time slicing. The model and simulations presented illustrate the significant power savings that can be achieved by time slicing.

关键词： Performance analysis digital video broadcasting Predictive models Analytical models Time division multiplexing Mathematical model TV broadcasting Batteries Bit rate Computational modeling

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Usage of application-specific switching activity for energy minimization of arithmetic units

Usage of application-specific switching activity for energy ...

引用

IEEE Computer Society Annual symposium on VLSI

作者： Shu-Shin Chin Sangjin Hong Suhwan Kim Department of Electrical and Computer Engineering State University of New York Stony Brook Stony Brook NY USA Low Power Digital Circuits Group IBM Thomas J. Watson Research Center Yorktown Heights NY USA

ISBN: (纸本)0769520979

This paper presents a delay constraint power minimization technique for logic incorporating dual supply voltages. The power is reduced by selecting supply voltage according to switching activity of the subunits. The technique employs energy and delay models of arithmetic units with array structure. The supply voltage is selected to reduce power consumption while maintaining propagation delay constraint. The model characterization is done with Verilog simulation where subunits are designed with Cadence and HSPICE using 0.35/spl mu/m CMOS process. We applied the technique on multiplier of general purpose DSP processors and CORDIC. The results obtained from the proposed method are discussed.

关键词： Arithmetic Voltage Semiconductor device modeling Minimization Logic Energy consumption Propagation delay Hardware design languages CMOS process digital signal processing

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Chip-level ESD simulation for fail detection and design guidance

Chip-level ESD simulation for fail detection and design guid...

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Annual International symposium on Reliability Physics

作者： S. Druen M. Streibl F. Zangl J. Schneider U. Glaser K. Esmark W. Stadler H. Gossner D. Schmitt-Landsiedel Institute of Technical Electronics Technical University Munich Germany CL DAT LIB IO Infineon Technologies Munich Germany Integrated Systems Laboratory ETH Zurich Zurich Switzerland

Modern VLSI designs in deep submicron technologies constitute a new type of ESD protection challenge. Increasing complexity of modem digital and mixed signal designs demands for simulation and verification methods that guarantee, that ESD protection concepts and rules are correctly implemented and brought to silicon. A simulation approach and analysis method is presented that allows to address a class of ESD fails caused not by specific design or layout errors, but rather by an unfavourable setup of the chip supply concept and I/O cell ring. The high complexity of chip-level ESD networks is handled with a Monte-Carlo like, permutational approach. The integration of this method in the chip concept engineering and design flow is discussed.

关键词： Electrostatic discharge Protection Failure analysis Modems Very large scale integration Signal design Analytical models Circuit simulation Libraries Semiconductor device modeling

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Study of nanodynamics in hard disk drive technology

Study of nanodynamics in hard disk drive technology

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International symposium on Micromechatronics and human Science (MHS)

作者： K. Ono Department of Mechanical Engineering Tokyo Institute of Technology Meguro Tokyo Japan

This paper presents the current status of hard disk drive (HDD), three key mechanical components, their common features of positioning mechanism, and various nanodynamic problems to be studied for the development of a higher density and higher performance HDD. Then I show our recent study of the nanodynamics of a flying slider in a near-contact regime and interfacial adhesion forces caused by lubricant meniscus. In the head positioning mechanism, tracking error caused by disk flutter and flow-induced head arm/suspension system is described. We proposed a squeeze air damping plate to suppress the disk flutter, and a dynamic absorber design to suppress the flow-induced suspension vibration.

关键词： Personal communication networks Hard disks Mobile handsets Information technology Production systems Pervasive computing Internet Mobile communication Consumer electronics digital cameras

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A high-speed analog turbo decoder with low-energy consumption

A high-speed analog turbo decoder with low-energy consumptio...

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International symposium on Communications and Information Technologies (ISCIT)

作者： F. Gioulekas M. Birbas A. Birbas G. Bilionis Department of Electrical Computer Engineering University of Patras Campus of Rion Greece

A new type of iterative decoder based on analog computing networks, which incorporates conventional BiCMOS or CMOS technologies, outperform its digital counterparts in terms of speed and/or power consumption. The paper presents the design and functionality of an all-analog turbo decoder taking advantage of the high-speed features of SiGe HBTs achieving throughput up to Gbits/s. Simulation results based on AMS 0.35 /spl mu/m SiGe BiCMOS technology demonstrate promising performance compared to existing designs.

关键词： Iterative decoding BiCMOS integrated circuits CMOS technology Silicon germanium Germanium silicon alloys Analog computers Computer networks Energy consumption Throughput Computational modeling

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Can machines interpret line drawings? 04

Can machines interpret line drawings?

引用

Proceedings of the First Eurographics conference on Sketch-Based Interfaces and modeling

作者： P. A. C. Varley R. R. Martin H. Suzuki Department of Fine Digital Engineering The University of Tokyo Tokyo Japan School of Computer Science Cardiff University Cardiff Wales UK

ISBN: (纸本)9783905673166

engineering design would be easier if a computer could interpret initial concept drawings. We outline an approach for automated interpretation of line drawings of polyhedra, and summarise what is already possible, what developments can be expected in the near future, and which areas remain problematic. We illustrate this with particular reference to our own system, RIBALD, summarising the published state of the art, and discussing recent unpublished improvements to RIBALD. In general, successful interpretation depends on two factors: the number of lines, and whether or not the drawing can be classified as a member of special shape class (e.g. an extrusion or normalon). The state-of-the-art achieves correct interpretation of extrusions of any size and most normalons of 20—30 lines, but drawings of only 10—20 lines can be problematic for unclassified *** successes, there are caseswhere the desired interpretation is obvious to a human but cannot be determined by currently-available algorithms. We give examples both of our successes and of typical caseswhere human skill cannot be replicated.

关键词： conceptual design engineering design line drawing interpretation sketching

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The influence of the level of abstraction on the evolvability of conceptual models of information systems

The influence of the level of abstraction on the evolvabilit...

引用

International symposium on Empirical Software engineering (ISESE)

作者： J. Verelst Department of Management Information Systems University of Antwerp Belgium

Over the years, we have seen an increase in the level of abstraction used in building software. Academic and practitioners' literature contains numerous but vague claims that software based on abstract conceptual models (such as analysis and design patterns, frameworks and software architectures) has evolvability advantages. Our study validates these claims. We investigate evolvability at the analysis level, i.e. at the level of the conceptual models that are built of information systems (e.g. UML-models). More specifically, we focus on the influence of the level of abstraction of the conceptual model on the evolvability of the model. Hypotheses were tested with regard to whether the level of abstraction influences the time needed to apply a change, the correctness of the change and the structure degradation incurred. Two controlled experiments were conducted with 136 subjects. Correctness and structure degradation were rated by human experts. Results indicate that, for some types of change, abstract models are better evolvable than concrete ones. Our results provide insight into how the rather vague claims in literature should be interpreted.

关键词： Information systems Object oriented modeling Concrete Management information systems Context modeling Degradation Buildings Pattern analysis Software architecture Information analysis

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Low-profile antennas for implantable medical devices: optimized designs for antennas/human interactions

Low-profile antennas for implantable medical devices: optimi...

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Antennas and Propagation Society International symposium

作者： Jaehoon Kim Y. Rahmat-Samii Department of Electrical Engineering University of California Los Angeles Los Angeles CA USA

ISBN: (纸本)0780383028

Based on the FDTD simulations and the return loss measurement setup, a spiral-type microstrip antenna and planar inverted F antenna (PIFA) are optimized to operate in a human body at the biomedical frequency band and their electric characteristics are compared in terms of physical dimension and radiation characteristics. Although the radiation patterns are similar to each other, the PIFA has advantages over a microstrip antenna, specifically smaller dimensions and higher radiation efficiency. The SAR calculation of two low profile antennas indicates that the dielectric layer used for the superstrate are useful to protect the skin tissue in front of the antenna and make it possible for the implanted antenna to deliver more than 25 /spl mu/W for short-range biomedical devices.

关键词： Implantable biomedical devices design optimization humans Microstrip antennas Finite difference methods Time domain analysis Biological system modeling Medical simulation Antenna measurements Biomedical measurements

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