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Operation Supporting system of Tools in Virtual World

Journal of Robotics and Mechatronics 2000年第1期12卷 11-17页

作者： Annoura, Kazuhiro Abe, Norihiro Tanaka, Kazuaki Taki, Hirokazu Department of Mechanical System Engineering Faculty of Computer Science and System Engineering Kyushu Institute of Technology Japan Faculty of System Engineering Wakayama University Japan

Because tools in real world operate the object in order to attain a specific purpose, it is possible to forecast the movement to some extent. So action of hands to operate the tool to attain a purpose is measured beforehand and the data are stored in computer classified by the purpose. When operating the tool with virtual hand in virtual space, in the case that the system detects that the user is going to perform the operation defined for the tool, playback of the movement of the hand stored in the system enables the user to get operation feeling with more delicate reality. © 2000, Fuji technology Press. All rights reserved.

关键词： Virtual reality

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Reducing test data volume using external/LBIST hybrid test patterns

Reducing test data volume using external/LBIST hybrid test p...

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IEEE International Test Conference

作者： D. Das N.A. Touba Cores and System Technology Motorola Inc. Austin TX USA Computer Engineering Research Center Department of Electrical and Computer Engineering University of Technology Austin TX USA

A common approach for large industrial designs is to use logic built-in self-test (LBIST) followed by test data from an external tester. Because the fault coverage with LBIST alone is not sufficient, there is a need to top-up the fault coverage with additional deterministic test patterns from an external tester. This paper proposes a technique of combining LBIST and deterministic ATPG to form "hybrid test patterns" which merge pseudo-random and deterministic test data. Experiments have been done on the Motorola PowerPC/sup TM/ microprocessor core to study the proposed hybrid test patterns. Hybrid test patterns provide several advantages: (1) can be applied using STUMPS architecture (Bardell, 82) with a minor modification, (2) significantly reduce external test data stored in tester memory, (3) reduce the number of pseudorandom patterns by orders of magnitude, thus addressing power issues.

关键词： Circuit testing Logic testing Built-in self-test Circuit faults system testing Costs Logic design Automatic testing Manufacturing Automatic test pattern generation

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Design of the TUAT/Karlsruhe humanoid hand

Design of the TUAT/Karlsruhe humanoid hand

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Proceedings. 2000 IEEE/RSJ International Conference on Intelligent Robots and systems (IROS 2000) (Cat. No.00CH37113)

作者： N. Fukaya S. Toyama T. Asfour R. Dillmann Department of Mechanical System Engineering Tokyo University of Agriculture슠and슠Technology Japan Department of Computer Science Institute for Control and Robotics University of Karlsruhe Germany

The increasing demand for robotic applications in dynamic unstructured environments is motivating the need for dextrous end-effectors which can cope with the wide variety of tasks and objects encountered in these environments. The human hand is a very complex grasping tool that can handle objects of different sizes and shapes. Many research activities have been carried out to develop artificial robot hands with capabilities similar to the human hand. In this paper the mechanism and design of a new humanoid-type hand (called TUAT/Karlsruhe Humanoid Hand) with human-like manipulation abilities is discussed. The new hand is designed for the humanoid robot ARMAR which has to work autonomously or interactively in cooperation with humans and for an artificial lightweight arm for handicapped persons. The arm is developed as close as possible to the human arm and is driven by spherical ultrasonic motors. The ideal end-effector for such an artificial arm or a humanoid would be able to use the tools and objects that a person uses when working in the same environment. Therefore a new hand is designed for anatomical consistency with the human hand. This includes the number of fingers and the placement and motion of the thumb, the proportions of the link lengths and the shape of the palm. It can also perform most part of human grasping types. The TUAT/Karlsruhe Humanoid Hand possesses 20 DOF and is driven by one actuator which can be placed into or around the hand.

关键词： Humanoid robots Actuators Intelligent robots Grasping Cognitive robotics Agriculture Shape Human robot interaction Intelligent sensors Space technology

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Performance studies in broadcast and select WDM system

Performance studies in broadcast and select WDM system

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IEEE Region 10 International Conference TENCON

作者： R.W. Yousif B.M. Ali Limkokwing Institute of Creative Technology Petaling Jaya Malaysia Computer & Communications System Department Faculty of Electrical Engineering Universiti Putra Malaysia Malaysia

We study multicast traffic performance in single-hop optical networks based on broadcast and select system that employ a receiver collision avoidance protocol (RCA) as a multicasting protocol. We use an approximate analytical solution and Markov model to analyse the system. We consider fixed and uniform distribution of the destination set size to show the relationship between the receiver throughput and system throughput against the multicast size of the destination. We also show the trade-off between the offered load and channel probability. Then we evaluate the system as a relationship between blocking probability and offered load.

关键词： Wavelength division multiplexing Optical receivers Optical transmitters Optical fiber networks Optical buffering Radio broadcasting Optical filters Multicast protocols Telecommunication traffic Bandwidth

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Fatigue behavior of gusset plates subjected to out-of-plane distortions

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KSCE Journal of Civil engineering 2000年第1期4卷 19-25页

作者： Sang-Ik Woo Kyoung-Sup Jung Institute of Construction Technology Chungbuk National University 361-763 Cheong-Ju Korea Department of Structural System & Computer Aided Engineering Chungbuk National University 361-763 Cheong-Ju Korea

Numerous bridges have used comparable lateral connection plates welded to either the web or flange to connect the lateral bracing system to the longitudinal girders. Cracks are known to grow in the weld end and the gap of the gusset weld. This condition is complicated by the high residual stresses developed in these severely restrained configurations and also by out-of-plane movement caused by the lateral bracing system. We have tried to evaluate the fatigue strength of several of these welded attachments and also to determine whether or not they can be affected by lateral constraints. It was found that the connecting lateral bracing to the web gusset had no influence on its fatigue behaviour. There was no detectable effect of connecting the lateral bracing members to the flange gusset plates. The effect of secondary stresses and displacements in the girder web due to lateral bracing connected to the gusset plates was insignificant as was the relative stiffness of the lateral bracing system.

关键词： steel bridge lateral bracing system cyclic loading fatigue strength gusset plate out-of-plane distortions weld detail

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Low-power multipliers by minimizing inter-data switching activities

Low-power multipliers by minimizing inter-data switching act...

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Midwest Symposium on Circuits and systems (MWSCAS)

作者： Sandy Wang Yi-Wen Wu O.T.-C. Chen Ruey-Liang Ma Signal and Media Laboratories Department of Electrical Engineering National Chung Cheng University Chiayi Taiwan Computer System Development Department Computer & Communications Research Laboratories Industrial Technology and Research Institute Hsinchu Taiwan

By using the radix-4 Booth algorithm, low-power 2's complement multipliers are developed by minimizing inter-data switching activities. Before performing multiplication, one of two input data with a smaller dynamic range is partitioned into Booth codes, thereby increasing probabilities of partial products being zero. In addition, functional blocks for adding zero preserve their previous input states. As compared to the conventional Wallace-tree multiplier, the two 16/spl times/16-bit multipliers proposed herein are demonstrated to have lower power dissipation.

关键词： Dynamic range Power dissipation Decoding Switching circuits Partitioning algorithms Circuits and systems Laboratories Microelectronics Power system reliability Arithmetic

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Capacity analysis of m-user self-encoded multiple access system in AWGN channels

Capacity analysis of m-user self-encoded multiple access sys...

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IEEE International Symposium on Spread Spectrum Techniques and Applications

作者： Won Mee Jang Lim Nguyen The Peter Kiewit Institute of Information Science Technology & Engineering Department of Computer and Electronics Engineering University of Nebraska Lincoln Omaha NE USA University of Nebraska System Lincoln NE US

Self-encoded spread spectrum eliminates the need for traditional transmit and receive PN code generators. The enhanced transmission security arises from the stochastic nature of the unique spectrum spreading and de-spreading processes. In a self-encoded multiple access (SEMA) system, the number of users is not limited by the number of available sequences, unlike CDMA systems that employ PN codes such as m-, Gold or Kassami sequences. It is important from a design standpoint to specify the minimum number of chips to support multiple users for a specified quality of service and capacity in SEMA system. We find the number of chips for an m-user SEMA system to achieve the specified capacity and bit error rate. The capacity analysis provides a useful indication of the maximum number of users for a given spreading factor.

关键词： AWGN channels Spread spectrum communication Transmitters Delay Stochastic processes Multiaccess communication Multiple access interference Data security Encoding Registers

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3D graphics system with VLIW processor for geometry acceleration

3D graphics system with VLIW processor for geometry accelera...

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IEEE Asia-Pacific Conference on ASIC (AP-ASIC)

作者： Young-Wook Jeon Young-Su Kwon Yeon-Ho Im Jun-Hee Lee Sang-Joon Nam Byung-Woon Kim Chong-Min Kyung Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon South Korea System IC Hyundai Electronics Industries South Korea

To process enormous 3D data, we have designed a VLIW (Very Long Instruction Word) processor called FLOVA (Floating-Point VLIW Architecture) exploiting the ILP (Instruction-Level Parallelism) in 3D programs. This paper presents FGA (FLOVA Geometry Accelerator) that is the 3D graphics system and it almost removes the time required to process in the geometry stage. We have developed the 3D graphics library, FGA-GL, to supports the FGA system. The deferred primitive rendering algorithm of FGA-GL enables the geometry processing of the primitive data to be done concurrently with the host job such as primitive data management or game play. FGA improves the average performance of 3D graphics system by 2.5-3.0.

关键词： VLIW Geometry Acceleration Rendering (computer graphics) Libraries computer graphics Parallel processing Engines Pipelines Electronics industry

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The removal of secondaries of Jawi characters

The removal of secondaries of Jawi characters

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IEEE Region 10 International Conference TENCON

作者： K. bin Omar R. bin Mahmoud M.N. bin Sulaiman A.R. bin Ramli Department of Communication and Computer SystemFaculty of Engineering Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia Department of Computer ScienceFaculty of Computer Science and Information Technology Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia Department of System Science & ManagementFaculty of Information Science and Technology Universiti Kebangsaan Malaysia Malaysia

This paper is presented to explain the steps in removing the secondary part of Jawi characters (such as dots, hamzah, and madda). The method used is based on the connected component labelling algorithm or CCLA and is added with the secondary type detection algorithm (STDA) by Bushofa and Spann (see Image and Vision Computing, vol.15, p.167-79, 1997). Several steps in the algorithm however, have been modified in order for it to be matched with the handwritten Jawi characters. Several samples of the result from the suggested algorithm are also presented. The result promises a good outcome.

关键词： computer science Character recognition Iterative algorithms Information technology Optical character recognition software Pixel Information management technology management Information science Labeling

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Micromachined picosecond optical near-field probe for pulse-coupling measurement of interconnection lines

Micromachined picosecond optical near-field probe for pulse-...

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IEEE Topical Meeting on Electrical Performance of Electronic Packaging (EPEPS)

作者： Jongjoo Lee Heeseok Lee Seungyong Baek Yuchul Jung Joungho Kim Department of Electrical Engineering & Computer Science KAlST Terahertz Media and System Laboratory Daejeon South Korea Korea Advanced Institute of Science and Technology Daejeon Daejeon KR

We have successfully developed a novel picosecond optical near-field probe for the high-frequency field mapping of interconnection lines. The transverse tangential electric field distribution of the microstrip coupled... 详细信息

关键词： Pulse measurements Optical interconnections Probes Optical pulses Integrated circuit interconnections High speed optical techniques Optical films Spatial resolution Optical switches Optical pulse generation

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