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IEEE TRANSACTIONS ON computer-AIDED DESIGN OF INTEGRATED CIRCUITS AND systems 1995年第5期14卷 567-575页

作者： MA, SC MCCLUSKEY, EJ Center for Reliable Computing Computer Systems Laboratory Department of Electrical Engineering and Computer Science University of Stanford Stanford CA USA

Opens in BICMOS structures are analyzed here. It is shown that some opens cannot be detected by stuck-fault or other functional tests, since some transistors in BiCMOS gates do not affect the logical function of the gate. A switch-level model for CMOS circuits is extended to include bipolar devices. With this switch-level model, opens that cannot be detected by stuck-faults or other functional tests are easily identified. It is also shown that, in BICMOS circuits, an open defect in one transistor can accelerate the wearout of another nondefective transistor.

关键词： BiCMOS integrated circuits Circuit faults Circuit testing Semiconductor device modeling Logic testing Delay MOSFETs Switching circuits Acceleration CMOS technology

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Estimating 3-D body parameters from reflection component separating imagery: a performance analysis

Estimating 3-D body parameters from reflection component sep...

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International Symposium on computer Vision (ISCV)

作者： J.C. Glas F. van der Heijden Department of Electrical Engineering Control Systems and Computer Engineering Group.Laboratory for Measurement Science and Instrumentation University of Twente Enschede Netherlands Lab. for Meas. Sci. & Instrum. Twente Univ. Enschede Netherlands

Iterative least-squares estimation requires accurate reflectance models to retrieve geometrical parameters of 3-D objects from an image projection. We investigate the use of separating the diffuse (body) reflection from the specular (surface) reflection, where the latter is responsible for image highlights. The performance of several models has been analysed by comparing local higher-order derivatives of the least-squares error function. Experiments show that the (smooth) diffuse component yields the best convergence properties, while the (sharp) specular component cast be utilized to improve noise insensitivity.

关键词： Parameter estimation Performance analysis Convergence Reflectivity Noise measurement Optical reflection Image retrieval Additive noise Velocity measurement computer errors

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Modeling recycle: a case study in the industrial use of measurement and modeling

Modeling recycle: a case study in the industrial use of meas...

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International computer Performance and Dependability Symposium

作者： L.M. Malhis S.C. West L.A. Kant W.H. Sanders Storage Systems Division IBM Corporation Tucson AZ USA Department of Electrical and Computer Engineering University of Arizona Tucson Tucson AZ USA Department of Electrical and Computer Engineering University of Arizona Tucson Tustin AZ USA Center for Reliable and High-Performance Computing Coordinated Science Laboratory University of Illinois Urbana IL USA

Large-scale data storage systems rely on magnetic tape cartridges to store millions of data objects. As these tapes age, the resident data objects become invalid; consequently, less and less of the tape potential capacity is effectively utilized. To address this problem, data storage systems have a facility, called "recycle" in this paper, that transfers valid data objects from sparsely populated tapes onto new tapes, thus creating empty tapes for reuse. A high performance recycle process is needed to keep the number of tape cartridges to a minimum, and to maintain a continuous supply of empty tapes for storing newly created data objects. The performance of such processes is not easy to determine, and depends strongly on the data stored on the tapes, the speed and characteristics of the computer on which recycle is executed, and the nature of the algorithms themselves. This paper documents an extensive effort to evaluate a proposed recycle algorithm, using held workload data, laboratory measurements, and modeling. The results of the study were used to improve the recycle process, and were later verified through field trials. In addition yielding the results themselves, the effort illustrated that modeling and measurement, in an industrial setting, can indeed be used successfully in the design process.< >

关键词： Recycling computer aided software engineering Large-scale systems Data storage systems Laboratories Magnetic field measurement Process design Coordinate measuring machines Electric variables measurement Area measurement

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PARALLEL AND DISTRIBUTED TLM COMPUTATION WITH SIGNAL-PROCESSING FOR ELECTROMAGNETIC-FIELD MODELING

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INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS 1995年第3-4期8卷 169-185页

作者： SO, PPM ESWARAPPA, C HOEFER, WJR NSERC/MPR Teltech Research Chair in RF Engineering Department of Electrical and Computer Engineering University of Victoria Victoria British Columbia V8W 3P6 Canada Poman So received his B.Sc. degree in computer science and physics from the University of Toronto Toronto Onatario Canada in 1985. He obtained his B.A. Sc. and M.A.Sc. degrees in electrical engineering (summa cum laude) from the University of Ottawa Ottawa Ontario Canada in 1987 and 1989 respectively. Mr So was a research engineer in the University of Ottawa from January 1989 to October 1991 his research interests included CAD techniques of microwave circuits and numerical methods for electromagnetic wave modelling. He specialized in the development of electromagnetic engineering CAD software and successfully implemented a number of electromagnetic wave simulators based on the two-dimensional and three-dimensional transmission-line matrix methods. From August 1990 to February 1991 he accompanied Professor W. J. R. Hoefer to Rome Italy and Sophia Antiopolas France. During that time he implemented a parallel version of the 3D-TLM simulator for the CM-2 Connection Machine using C-Star and X Windows Library. He is a research engineer and a Ph.D. student at the University of Victoria Victoria British Columbia Canada. He ported the 2D- and 3D-TLM simulators to DECmpp 1200 massively parallel computer using MPL C and C++. He also combined OSA90/hope a commercially available microwave CAD program with a 2D-TLM simulation module for geometry optimization using the Datapipe technique of OSA90/hope. Recently he has developed a distributed client-server computing technique for the TLM method this technique could accelerate the TLM simulation by more than an order of magnitude. Channabasappa Eswarappa received the M.Tech. degree in electrical engineering from the Indian Institute of Technology Kanpur India in 1983 and Ph. D. degree from the University of Ottawa Canada in 1990. He worked as an Assistant Executive Engineer and later as

This paper describes the implementation of transmission-line matrix (TLM) method algorithms on a massively parallel computer (DECmpp 12000), the technique of distributed computing in the UNIX environment, and the combination of TLM analysis with Prony's method as well as with autoregressive moving average (ARMA) digital signal processing for electromagnetic field modelling. By combining these advanced computation techniques, typical electromagnetic field modelling of microwave structures by TLM analysis can be accelerated by a few orders of magnitude.

关键词： Mathematical models

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Model-based programming for parallel image processing

Model-based programming for parallel image processing

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IEEE International Conference on Image Processing

作者： M.S. Moore G. Karsai J. Sztipanovits Department of Electrical Engineering Measurement and Computing Systems Laboratory Vanderbilt University Nashville TN USA

We describe a programming environment which is being developed for the automatic generation of parallel image processing applications. Through the use of model-based software synthesis, we transparently create large grained data parallel applications which can be executed on arbitrary processor networks. The high-level abstractions provided by the modeling paradigm isolates the user from the complexity of the underlying implementation, allowing developers with little or no experience in parallel programming to rapidly create parallel applications. The data parallel modeling facilities perform the same tasks as the data alignment and distribution compiler directives of High Performance Fortran and the aggregate objects of pC++. However, we have found that by introducing the parallelism on the system level, instead of in the algorithm, we can use traditional compilers and leave the application specific code unchanged. This allows us to take advantage of existing well developed image processing code libraries. Here we describe a system which generates data parallel versions of applications created in Khoros, the popular image processing package developed by the University of New Mexico. This system retains the best qualities of Khoros: its interactive and experimental nature, and its visual interface, but adds the capability for automatically generating much higher performance parallel implementations when needed. This system demonstrate the suitability of the model-based approach for developing parallel imaging software.< >

关键词： Parallel programming Image processing Application software Programming environments Packaging Prototypes Software prototyping Algorithm design and analysis User interfaces computer networks

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Random parameter variation in analog VLSI neural networks for linear image filtering

Random parameter variation in analog VLSI neural networks fo...

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International Joint Conference on Neural Networks (IJCNN)

作者： B.E. Shi T. Roska L.O. Chua Department of Electrical Engineering and Computer Sciences University of California Berkeley CA USA Dual and Neural and Neural Computing Systems Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

This paper introduces an analytic method to determine the sensitivity to random parameter variations of analog VLSI neural network architectures for linear image filtering. The authors compare the robustness of several different circuit architectures for low pass filtering. This method can also determine which components within a particular architecture should specified the most precisely.< >

关键词： Intelligent networks Very large scale integration Neural networks Nonlinear filters Circuits Filtering Robustness Low pass filters computer architecture Cellular neural networks

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Correction to "A new approach to service provisioning in ATM networks"

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IEEE/ACM Transactions on Networking 1994年第3期2卷

作者： S. H. Low P. P. Variaya Computing Systems Research Laboratory AT&T Bell Laboratories Murray Hill NJ Department of Electrical Engineering and Computer Sciences University of California Berkeley CA

No abstract available.

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A two-layer Radon transform cellular neural network

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IEEE Transactions on Circuits and systems II: Analog and Digital Signal Processing 1992年第7期39卷 488-489页

作者： Wu, Chai Wah Chua, Leon O. Roska, Tamas Department of Electrical Engineering and Computer Sciences University of California Berkeley CA USA Dual and Neural Computing Systems Research Laboratory Computer and Automation Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

A two-layer continuous-time cellular neural network for finding the Radon transform of a binary image is presented. The functionality of this cellular neural network follows from the functionality of the connected com... 详细信息

关键词： Image processing

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Temperature dependence and material properties of InGaAsP/lnP mirrors 4

Temperature dependence and material properties of InGaAsP/ln...

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LEOS 1992 Summer Topical Meeting Digest on Broadband Analog and Digital Optoelectronics, Optical Multiple Access Networks, Integrated Optoelectronics, and Smart Pixels - 4th International Conference on Indium Phosphide and Related Materials, IPRM 1992

作者： Dudley, J.J. Crawford, D.L. Bowers, J.E. Silvestre, P. Robinson, G.Y. Department of Electrical and Computer Engineering University of California Santa BarbaraCA93106 United States Jet Propulsion Laboratory PasadenaCA91109 United States Department of Electrical Engineering Center for Optoelectronic Computing Systems Fort CollinsCO80523 United States

ISBN: (纸本)0780305221

We analyze the temperature dependence and material properties of InGaAsP/lnP quarter wave mirrors used in optoelectronic devices such as surface emitting lasers and resonant cavity photodetectors. We measure the variation in center wavelength of the mirrors as the temperature changes over an 80 °C range. The peak reflectivity and bandwidth of the mirrors are measured as a function of the number of layers. © 1992 IEEE.

关键词： III-V semiconductors

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The CNN Universal Machine part 2: Programmability and applications 2

The CNN Universal Machine part 2: Programmability and applic...

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2nd International Workshop on Cellular Neural Networks and their Applications, CNNA 1992

作者： Roska, Tamás Chua, Leon O. Electronics Research Laboratory Department of Electrical Engineering and Computer Science University of California at Berkeley BerkeleyCA94720 United States Dual and Neural Computing Systems Laboratory Computer and Automation Institute of the Hungarian Academy of Sciences Kende-u.13/17 BudapestH-1111 Hungary

ISBN: (纸本)0780308751

The programmability (as a stored program) of the CNN Universal Machine is discussed first. It is shown why and in which sense this machine is universal. A new type of algorithm, the analogic one, is introduced. The application potential is reviewed and the biological relevance is analyzed. It turns out that the architecture is optimal not only for silicon implementations, however, many biological information processing organs have the same structure. © 1992 IEEE.

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