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International Conference on High Performance Computing

作者： M. Smirli D. Lioupis K. Kissell Department of Computer Engineering & Informatics University of Patras Greece Computer Technology Institute Patras Greece Silicon Graphics Core Technology Group Cortaillod Switzerland

Instruction caches are usually designed to fetch the whole block from memory in case of a miss. However, the fetched blocks might contain branch instructions which if taken, will render the rest of the block useless. A novel approach is introduced, namely the Precise Control, which fetches only the words of a cache block that are likely to be used. The performance of Precise Control is evaluated and it is shown that it has a positive influence on system performance. Precise Control reduces the words fetched from memory by up to 60%, thus reducing significantly the communication overhead between cache and main memory as well as the total execution time.

关键词： Delay System performance Prefetching Communication system traffic control Informatics Silicon computer graphics computer aided instruction Capacitive sensors Hardware

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Training environment for inferior vena caval filter placement

Training environment for inferior vena caval filter placemen...

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6th Conferenc on Medicine Meets Virtual Reality, MMVR 1998

作者： Hahn, James K. Kaufman, Roger Winick, Adam B. Carleton, Thurston Park, Youngser Lindeman, Rob Oh, Kwang-Man Ai-Ghreimil, Nadia Walsh, Raymond J. Loew, Murray Gerber, Joanne Sankar, Siddarth Laboratory for Advanced Computer Applications in Medicine Institute for Computer Graphics George Washington University Washington DC 20052 United States Department of Electrical Engineering and Computer Science George Washington University Washington DC 20052 United States Department of Radiology George Washington University Washington DC 20052 United States Department of Civil and Mechanical Engineering George Washington University Washington DC 20052 United States Department of Anatomy and Cell Biology George Washington University Washington DC 20052 United States Institute for Medical Imaging and Image Analysis George Washington University Washington DC 20052 United States

ISBN: (纸本)9051993862

This paper describes a Virtual Environment system designed to aid in training interventional radiologists in inferior vena cava filter placement. It is being developed as part of a VE simulator for a number of surgical and interventional radiology procedures at the Laboratory for Advanced computer Applications in Medicine at the George Washington University. In this procedure a filter is placed in the inferior vena cava to prevent blood clots from the lower portion of the body from reaching the lungs and causing a pulmonary embolus. The simulation is designed to provide both tutorial and testing modes for the filter placement procedure.

关键词： Virtual reality

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Design of an optimal test pattern generator for built-in self testing of path delay faults

Design of an optimal test pattern generator for built-in sel...

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International Conference on VLSI Design

作者： D.K. Das I. Chaudhuri B.B. Bhattacharya Department of Computer Science & Engineering. Jadavpur University Calcutta India Mentor Graphics Corporation Hyderabad India Advanced Computing & Microelectronics Unit Indian Statistical Institute Calcutta India

A novel design of a test pattern generator (TPG) for built-in self-testing (BIST) of path delay faults, is proposed. For an n-input CUT, the TPG generates a sequence of length (n.2/sup n/+1), that includes all n.2/sup n/ single-input-change (SIC) test pairs, and hence optimal. The generation of such a sequence of minimum length (i.e., n.2/sup n/+1) was an open problem. A simple iterative circuit of the TPG is then constructed. This provides minimum test application time for testing path delay faults, and compares favorably with the earlier BIST designs.

关键词： Test pattern generators Automatic testing Delay Circuit testing Silicon carbide Circuit faults Built-in self-test Electrical fault detection Fault detection Robustness

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Realistic Korean speech modeling and synchronization

Realistic Korean speech modeling and synchronization

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Woongsoon Kim Seungkeol Choe Sangwon Kim Chulwoong Lee Computer Graphics Laboratory Systems Engineering Research Institute Taejon South Korea

Summary form only given. Speech synthesis plays an important role in Korean speech animation since it produces the sequence of phonetic phonemes by processing nearly all of the elements like phonological rules, to enunciate the input text. To make a speaking facial model which uses the motions of lips and surrounding part of the face, it is necessary to extract visual informations from the output of a speech synthesis system. The paper investigates a set of facial elements enough to make a realistic speech animation by examining the visual factors not available from speech synthesis systems as well as extracting signals from the result of speech synthesis that will cause visible changes in facial expression.

关键词： Speech synthesis Facial animation computer graphics Systems engineering and theory Speech processing Lips

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Classification and extension of universal human emotions

Classification and extension of universal human emotions

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Seungkeol Choe Miseung Lee Jaehyung Park Woongsoon Kim Computer Graphics Laboratory Systems Engineering Research Institute Taejon South Korea

Summary form only given. For a long time, the fundamental six emotions proposed by Ekman were widely used for the expression of universal human emotions. But the classification can not present the facial expression directly from the uprising conceptual emotion. We notice that this problem is caused by the conceptuality of the emotions which can have a lot of expressions on a facial model. We present a new standard to classify the emotions in the expression sense, not in the conceptuality. This means we recognize each facial expressions as a meaningful visual unit. Each meaning of emotional expressions help us to define a visual level of detail of the expressions. Moreover the methodology which leads to the concept of expression can be applied to non-emotional expressions. We define additional facial expression from the expressions proposed by Faigin which express human physical state. The birth of the standard to express facial actions enable us both to classify emotional expression and to investigate each expression in detail, as well as to extend the region of facial expressions.

关键词： Humans computer graphics Systems engineering and theory Face recognition

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Principal stream surfaces 97

Principal stream surfaces

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Proceedings of the 8th conference on Visualization '97

作者： Wenli Cai Pheng-Ann Heng Fraunhofer Institute for Computer Graphics Dept. of Computer Science & Engineering The Chinese University of Hong Kong

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STARBIST: scan autocorrelated random pattern generation 97

STARBIST: scan autocorrelated random pattern generation

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Proceedings of the 34th annual Design Automation Conference

作者： K. H. Tsai S. Hellebrand J. Rajski M. Marek-Sadowska Department of Electrical and Computer Engineering University of California Santa Barbara CA Institute of Computer Structures University of Siegen Siegen Germany Mentor Graphics Corporation Wilsonville OR

ISBN: (纸本)9780897919203

This paper presents a new scan-based BIST schemewhich achieves very high fault coverage without the deficienciesof previously proposed schemes. This approach utilizes scan orderand polarity in scan synthesis, effectively converting the scanchain into a ROM capable of storing some "center" patterns fromwhich the other vectors are derived by randomly complementingsome of their coordinates. Experimental results demonstrate that avery high fault coverage can be obtained without any modificationof the mission logic, no test data to store and very simple BISThardware which does not depend on the size of the circuit.

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STARBIST: scan autocorrelated Random pattern generation

STARBIST: scan autocorrelated Random pattern generation

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Design Automation Conference

作者： K. H. Tsai S. Hellebrand J. Rajski M. Marek-Sadowska Department of Electrical and Computer Engineering University of California Santa Barbara USA Institute of Computer Structures University of Siegen Siegen Germany Mentor Graphics Corporation Wilsonville OR USA

ISBN: (纸本)0897919203

This paper presents a new scan-based BIST scheme which achieves very high fault coverage without the deficiencies of previously proposed schemes. This approach utilizes scan order and polarity in scan synthesis, effectively converting the scanchain into a ROM capable of storing some "center" patterns from which the other vectors are derived by randomly complementing some of their coordinates. Experimental results demonstrate that a very high fault coverage can be obtained without anymodification of the mission logic, no test data to store and very simple BIST hardware which does not depend on the size of the circuit.

关键词： fault coverage scanning Random pattern flap Pattern generation observational data polarity

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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Two-stage algorithm for rapid determination of the bending sequence in sheet metal products

Two-stage algorithm for rapid determination of the bending s...

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ASME 1996 Design engineering Technical Conferences and computers in engineering Conference, DETC-CIE 1996

作者： Radin, B. Shpitalni, M. Hartman, I. Laboratory for Computer Graphics and Cad Faculty of Mechanical Engineering Technion - Israel Institute of Technology Haifa32000 Israel

ISBN: (纸本)9780791897591

This paper presents an algorithm for solving the complex and critical problem of bending sequence in sheet metal manufacturing. Finding the bending sequence and required tool assignment presents a large combinatorial problem which is impossible to solve optimally for practical applications within a reasonable period of time. The paper presents a two-stage algorithm. The first stage finds a feasible solution based upon collision avoidance heuristics. The second stage rapidly seeks an alternative feasible sequence with a lower cost without exceeding time limitations. The algorithm is very practical because it reaches a low-cost solution quickly within computer memory limitations. In this paper, the problem is defined, the approach is presented formally, and finally, the power of the algorithm is demonstrated by solving bending sequences for real products. © 1996 American Society of Mechanical Engineers (ASME). All rights reserved.

关键词： Sheet metal

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