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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： D. Zhang M. Kamel M.I. Elmasry VLSI Research Group Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada Department of System Design Engineering University of Waterloo Waterloo ONT Canada

In this paper, the implementation of fuzzy clustering neural networks (NN), based on systolic arrays (SA), is explored. Mapping policies from NN to SA are established and some typical SA structures are developed. We illustrate our approach using a mapping of the topology extracted front two fuzzy clustering NNs onto its corresponding SA architecture along with a discussion of data flow and processing element definition in the SA.< >

关键词： Fuzzy neural networks Neural networks Systolic arrays Very large scale integration Network topology Computational modeling computer architecture computer networks design engineering Systems engineering and theory

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A new neural network structure with cooperative modules

A new neural network structure with cooperative modules

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International Joint Conference on Neural Networks (IJCNN)

作者： G. Auda M. Kamel H. Raafat Computer Science Department University of Regina Regina SAS Canada PAMI Research Group System Design Engineering Department University of Waterloo Waterloo ONT Canada

A new neural network structure is proposed in order to solve complex (large) classification problems. At first, the problem is divided into a number of simpler sub-problems using an unsupervised network. Then, each sub-problem is solved using one module of the proposed network. The new addition to this traditional "divide-and-conquer" structure is a voting layer above the outputs of the modules. In this layer, the modules cooperate in deciding the final decision by training every module on some additional classes: each class represents a group of classes of another module. During testing, the average "vote" of the modules for each other is calculated and multiplied by the classes output. This scheme gave higher accuracy and faster learning speed than the backpropagation scheme. A recursive hierarchy of this network can be built-up for more enhancement to the performance.< >

关键词： Neural networks Voting Testing Backpropagation computer science design engineering Systems engineering and theory Large-scale systems Councils Pipelines

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Digital compressor structure in neural network implementation using complex complementary pass-transistor logic (C/sup 2/PL)

Digital compressor structure in neural network implementatio...

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Midwest Symposium on Circuits and Systems (MWSCAS)

作者： D. Zhang M. Kamel M.I. Elmasry VLSI Research Group Department of Electrical & Computer Engineering University of Waterloo Waterloo ONT Canada Pattern Analysis & Machine Intelligence Systems Design Engineering University of Waterloo Waterloo ONT Canada

In this paper, a compressor structure based on complex complementary pass-transistor logic (C/sup 2/PL) is presented. Some types of 3-2 compressors in C/sup 2/PL are achieved and a number of experiments are conducted to optimize their performance. Two typical compressor building blocks, the 4-2 compressor and 7-3 compressor, are built and their digital neural network (DNN) applications are discussed. Compared with the complementary pass-transistor logic (CDL) designs, our simulations show that the C/sup 2/PL compressor has the best performances in power, delay and number of transistors.

关键词： Intelligent networks Neural networks CMOS logic circuits Logic design Switches Semiconductor device modeling design engineering Neurons CMOS technology Voltage

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THERE ARE NO IN-SITU METHODS

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GROUND WATER MONITORING AND REMEDIATION 1994年第4期14卷 120-123页

作者： NYER, EK SCHAFER, DC Evan K. Nyer is an expert in the research and application of technology to ground water cleanup. As vice president of technical resources with Geraghty & Miller Inc. (1099–18th St. Ste. 2100 Denver CO 80202) he is responsible for maintaining and expanding Geraghty & Miller's technical expertise in geology/hydrogeology engineering modeling risk assessment bioremediation and many other areas. He also provides expertise in engineering services including the design of treatment systems for contaminated water sites throughout the United States. He has designed and installed more than 100 ground water and soil remediation systems. He is a member of the Water Pollution Control Federation the National Ground Water Association the American Institute of Chemical Engineers and the American Society of Civil Engineers. David C. Schafer is a principal scientist/associate with Geraghty & Miller Inc. He attended the University of Minnesota where he obtained a bachelor's degree in mathematics and a master's degree in computer science. Prior to joining Geraghty & Miller he worked for a major water well equipment manufacturer for 19 years. Throughout his career he has specialized in the design of monitoring and production wells and the analysis and interpretation of pumping test data. He has written numerous articles on these subjects and has designed and analyzed pumping tests from hundreds of wells throughout North America.

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VES design - USING SIMPLE OR SOPHISTICATED design METHODS

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GROUND WATER MONITORING AND REMEDIATION 1994年第3期14卷 101-104页

作者： NYER, EK MACNEAL, RW SCHAFER, DC Evan K. Nyer is an expert in the research and application of technology to ground water cleanup. As vice president of technical resources with Geraghty & Miller Inc. (1099–18th St. Ste. 2100 Denver CO 80202) he is responsible for maintaining and expanding Geraghty & Miller's technical expertise in geology/hydrogeology engineering modeling risk assessment bioremediation and many other areas. He also provides expertise in engineering services including the design of treatment systems for contaminated water sites throughout the United States. He has designed and installed more than 100 ground water and soil remediation systems. He is a member of the Water Pollution Control Federation the National Ground Water Association the American Institute of Chemical Engineers and the American Society of Civil Engineers. Robert W. Macneal is a staff engineer with Geraghty & Miller Inc. with five years of experience in environmental consulting. He specializes in applying mathematical models to study saturated flow and transport processes in support of remediation design and risk evaluation. He conducts analyses to design and optimize soil venting bioventing air sparging and ground water recovery systems. He is a member of the Association of Ground Water Scientists and Engineers and the American Society of Civil Engineers. David C. Schafer is a principal scientist/associate with Geraghty & Miller Inc. He attended the University of Minnesota where he obtained a bachelor's degree in mathematics and a master's degree in computer science. Prior to joining Geraghty & Miller he worked for a major water well equipment manufacturer for 19 years. Throughout his career he has specialized in the design of monitoring and production wells and the analysis and interpretation of pumping test data. He has written numerous articles on these subjects and has designed and analyzed pumping tests from hundreds of wells throughout North America.

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USING VIRTUAL ENVIRONMENTS IN THE design OF SHIPS

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NAVAL ENGINEERS JOURNAL 1994年第3期106卷 91-106页

作者： JONS, OP RYAN, JC JONES, GW Otto P. Jons:received a Diplom Ing. in shipbuilding from the Technical University of Hanover W. Germany and an MS in naval architecture and marine engineering from MIT. He then joined Litton Ship Systems where he was responsible for the preliminary design of the DD-963 hull structure and then for ship system integration as manager LHA ship systems engineering department. From 1972 to 1974 he was the principal research scientist at Hydronautics. In 1974 as technical director he helped establish the Crystal City office of Designers and Planners. Mr. Jons was one of the co-founders of Advanced Marine Enterprises Inc. in 1976 where he serves as corporate vice president engineering. J. Christopher Ryan:earned his bachelors and masters degrees in naval architecture from Webb Institute and MIT respectively. He spent three years at the advanced marine technology division of Litton Industries working on the DD-963 class ship design and related computer aided design projects. He subsequently went to the Navy Department concentrating on early stage design of surface combatants for twelve years including work on the FFG-7 Sea Control Ship CSGN and CVV aircraft carrier projects. He then shifted focus and became the Technical Director for the Computer Supported Design Program in NavSea for five years. Mr. Ryan has served in several supervisory positions within the Ship Design Group in NavSea since that time. He is currently the director of the future ship concepts division. Gary W. Jones:graduated from the University of Tennessee in 1971 with a BS in mechanical engineering and followed up with graduate work at George Washington University and the University of Maryland. Mr. Jones was with the Naval Sea Systems Command from 1971 until 1988 where he was a naval architect in the submarine section of the hull form design division. In 1988 he was detailed to the Defense Advanced Research Projects Agency (DARPA) where he became the program manager for the advanced submarine technology program's hydrodynamic hydroac

A major contributor to the expense and length of time to design, build, and test new systems has been the need to build and test hardware prototypes to determine their effectiveness in meeting operational requirements. Recent and dramatic advances in computer simulation technologies hold forth the promise of revolutionizing design and acquisition strategies by providing the means to validate end users' requirements prior to hardware construction. By designing and operationally testing virtual prototypes in a virtual environment, these technologies will soon offer naval architects the ability to build and launch ships in computer-based cyberspace in lieu of the shipbuilder's ways. The authors of this paper provide the background for these developments, explore the significance and ramifications of these technologies to the current process of ship and system design, outline challenges lying ahead, and present their vision and recommendations for future development.

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EFFECTS OF SAMPLE ISOLATION AND HANDLING ON THE RECOVERY OF PURGEABLE ORGANIC-COMPOUNDS

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GROUND WATER MONITORING AND REMEDIATION 1994年第2期14卷 142-152页

作者： GIBS, J IMBRIGIOTTA, TE FICKEN, JH PANKOW, JF ROSEN, ME Jacob Gibs is a water quality specialist with the USGS Water Resources Division (810 Bear Tavern Rd. Ste. 206 West Trenton NJ 08628). He received his B.S. in mechanical engineering in 1968 his M.S. in environmental engineering in 1975 and his Ph.D. in environmental engineering in 1983 all from Drexel University in Philadelphia. His research interests include evaluating representative ground water and surface water sampling techniques for trace levels of organic and inorganic compounds and designing new sampling devices. Thomas E. Imbrigiotta received a B.S. in chemistry with a concentration in environmental studies from Oakland University Rochester Michigan in 1975. He then attended the University of Wisconsin Madison and received an M.S. in water chemistry in 1982. He has been a hydrologist with the USGS Water Resources Division (810 Bear Tavern Rd. Ste. 206 West Trenton NJ 08628) since 1977. He worked in the Indiana District from 1977 to 1984 prior to coming to the New Jersey District. Currently he is project coordinator for the Picatinny Research project a study of the fate and transport of chlorinated solvents in ground water at Picatinny Arsenal New Jersey. Previously he was chief of a project evaluating sampling techniques for organics in ground water. James H. Ficken worked for the USGS Water Resources Division as a chemical engineer from 1964 to 1992. He received his B.S. in chemical engineering in 1962 from Washington University in St. Louis Missouri. His research interests were water quality instrumentation and sensors that measure real-time environmental data. He contributed as a team member to the design and development of the USGS water quality flow-through and mini-monitor system. Ficken passed away in 1992. James F. Pankow is a professor in the Department of Environmental Science and Engineering at the Oregon Graduate Institute (Oregon Graduate Institute of Science and Technology Department of Environmental Science and Engineering P.O. Box 1900 Portland OR 97291–1000). He

This report compares the recovery of purgeable organic compounds (POCs) obtained by using a downhole isobaric sampler developed by the U.S. Geological Survey, a helical-rotor submersible pump, and a point source bailer to collect and isolate samples of ground water from three wells in New York and New Jersey, the samples contained a total of 13 POCs detectable at concentrations ranging from 0.5 mug/L to about 400 mug/L. This report also compares the effects of sample handling, specifically the differences in POC concentration recovery when an isobaric sample container is filled at land surface vs. when it is filled downhole, and when samples are taken using a bailer with and without a bottom-emptying device. These case studies are used to quantify the possible effects of different sample-isolation and sample-handling techniques on POC recovery. The relative effectiveness of the three devices varied by site and by compound. Overall, the POC recoveries achieved by using the helical-rotor submersible pump and the downhole isobaric sampler were not significantly different at the 95 percent confidence level. POC recovery obtained by using the point source bailer was 11 percent lower overall. The downhole isobaric sampler results exhibited smaller coefficients of variation than did the helical-rotor submersible pump or the point-source bailer results. However, the differences between the coefficients of variation of the downhole isobaric sampler and those of the helical-rotor submersible pump were not significant the 95 percent confidence level. The nonsignificant smaller coefficient of variation of the downhole isobaric sampler apparently resulted from two fewer sample handling steps that exposed the sample water to ambient air. An independent experiment performed with a different downhole sampler at one of the wells used in this investigation produced a similar statistical result. Also, the POC recovery obtained by pouring sample water out the top Of a point source bail

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GPS SYNCHRONIZED POWER-SYSTEM PHASE-ANGLE MEASUREMENTS

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INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第5期12卷 499-505页

作者： WILSON, RE STERLINA, PS Department of Electrical Engineering University of Wyoming Laramie WY 82071 USA. Worked as a power systems engineer from 1980 to 1990 and during the summer of 1992 for the Western Area Power Administration U.S. DOE. His job assignments included relay settings technical analysis time-keeping networks and major equipment commissioning. Bob Wilson is currently the Nicholson Visiting Assistant Professor at the University of Wyoming. His research interests include power system control through real-time measurements and applications of precise timekeeping. He is a member of the IEEE Power Engineering Society and is helping to co-ordinate the Precise Measurements in Power Systems Conference. Macrodyne Inc. Clifton Park NY 12065 USA. Engineering Manager for Macrodyne Inc. Clifton Park NY. Mr Sterlina has been involved in the conception and design of transient recording devices for both transmission and distribution applications. He has been responsible for developing several versions of digital recording instruments and programs for utility applications and managed development of the 1690 and 1692 phasor measurement and integrated recording units. He is a member of the Power Engineering Society and a PSIT working group on the application of Digital Techniques in Electrical Measurement.

Before a major new 500 kV transmission line was placed in service between Oregon and the San Francisco, California area, a series of high-voltage short circuit tests were performed on the transmission system. The short circuit faults produced a brief 'delta function' shock to the regional power system. This paper discusses the use of Global Positioning System (GPS) synchronized equipment for the measurement and analysis of key power system quantities. Before the testing, the authors installed two GPS synchronized phasor measurement units (PMUs). The PMUs use GPS to globally synchronize the measurement of the state vector of the power system, the complex voltages of substation busses. Complex voltage means the magnitude and the relative phase angles of substation voltages. GPS provides the global time reference marker for phase angle measurement. One electrical degree of the 60 Hz waveform equals about 46 mus. Across short transmission lines (less than 50 km), measurements may need to be made to 0.1 electrical degree, which translates to clock synchronizations of roughly 5 mus. The PMUs recorded the dynamic response of the power system phase angles when the northern California power grid was excited by the artificial short circuits. Power system planning engineers perform detailed computer generated simulations of the dynamic response of the power system to naturally occurring short circuits, e.g. faults caused by lightning. The computer simulations use models of transmission lines, transformers, circuit breakers, and other high voltage components. This work will compare computer simulations of the same event with field measurements.

关键词： POWER SYSTEM PHASE ANGLE STAYED FAULT TESTS

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ACQUISITION REFORM AND BEST PRODUCT PROCUREMENT - AN engineering VIEW

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NAVAL ENGINEERS JOURNAL 1994年第6期106卷 41-57页

作者： FISHER, DA SKOLNICK, A He has been involved with several weapon system developments. Among these were the Trident II fire control and navigation systems the BSY-I Anti-Submarine Warfare System and the Navy standard computers (UYK44 and EMSP). He served as manager of the Digital Circuits Engineering Branch and was then appointed as manager of the Automatic Test Equipment (ATE) Technology Division. As manager of the ATE Technology Division he was responsible for the SP-23 Fire Control System Support Project the SP-24 Navigation Project and the Fleet Progressive Maintenance Program (2M/ATE). This Division was responsible for selection and application of electronic product technology and for developing fleet test and repair techniques. He holds a B.S. in Electrical Engineering from the University of Evansville and is currently pursuing a Masters of Public Administration at Indiana University-Purdue University Indianapolis. Dr. Alfred Skolnick:retired from the Navy in 1983 with the rank of captain. He is president of System Science Consultants (SSC) specializing in strategic planning technical program definition technology assessment and engineering analyses on selected matters of national interest. Dr. Skolnick taught mathematics and management sciences at University of Virginia and Marymount University. He is adjunct faculty at Northern Virginia Community College. From 1985 to 1989 he was president of the American Society of Naval Engineers. In the Navy he served at Applied Physics Laboratory/The Johns Hopkins University then aboard USSBoston(CAG-1) and played leading roles in several weapon system developments inertial navigation (Polaris) deep submergence (DSRV) and advanced ship designs (SES). He later was director Combat System Integration Naval Sea Systems Command and head Combat Projects Naval Ship Engineering Center. In 1975 he became a major project manager and led the Navy's High Energy Lasers Program in 1981 he was assigned all Navy Directed Energy Weapons development efforts. He was vice president advanced tech

The military services are being moved in the direction of performance-based specifications and standards. They are being steered against dictating ''how to'' produce an item since such action forecloses on the ability to gain access to components or technology that may have a commercial equivalent. Why should the engineering community embrace the new approach? Aside from the obvious weight of it being approved policy, therefore currently mandated, it warrants examination because it is the correct approach at this time when applied to appropriate products. Military specifications and standards are to be displaced then, by acceptable alternative contractor design solutions. Industry bidders will be allowed to propose the particular design details, permitting procurement flexibility by contractually citing only system level or interface requirements, both physical and functional. Hopefully, this can broaden the industrial base and increase competition with reduced costs to follow. Conceptually, the approach appears both performance-sensible and cost-attractive (there are, of course, consequent risks) but how does implementation proceed? Is it possible to pursue the goals envisioned along paths that are not in themselves experimental? Can the American postulate, minimal loss of life and limb to U.S. military people, continue to be honored? Experience and track record elsewhere imply encouraging possibilities in select situations-useful prospects are identified and discussed in practical terms.

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ANALYSIS OF A MOVABLE BOUNDARY ACCESS TECHNIQUE FOR A MULTISERVICE MULTIBEAM SATELLITE SYSTEM

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INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 299-312页

作者： BOHM, S ELHAKEEM, AK MURTHY, KMS HACHICHA, M KADOCH, M Department of Electrical and Computer Engineering Concordia University 1455 De Maisonneuve Blvd. West Montreal H3A 1M8 Canada Was born in Montreal Canada on 14 September 1966. He received the B. Eng. degree in electrical engineering from Concordia University Montreal Canada in 1989. He is at present completing the M.A.Sc. degree in electrical engineering at Concordia University. (S'75–S'79–M'79–SM'86) received the Ph.D. degree from Southern Methodist University Dallas TX in 1979. He spent the next two years working as a Visiting Professor in Egypt after which he moved to Ottawa Canada in 1982. He assumed teaching and research positions in Carleton and Manitoba Univerities and later moved to Concordia University Montreal Canada in 1983 where he is now a Professor in the Electrical and Computer Engineering Department. He has published numerous papers in IEEE and international journals in the areas of spread spectrum and networking. He is a well-known expert in these areas and serves as a consultant to many companies. His current research interests include wide-band metropolitan networks switching architectures and performance of on-board multibeam satellites acquisitionless CDMA networks code distribution and orthogonalization of CDMA signals responsive congestion control for ATM-based networks ARQ techniques and investigation of the novel SUGAR CDMA systems in fading channels. Dr. Elhakeem is a Senior Member of the Canadian Electrical Engineering Society and Armed Forces Association. He has chaired numerous technical sessions in IEEE Conferences was the Technical Program Chairman for IEEE Montech 1986 Montreal Canada. Dr. Elhakeem is the key guest editor of theIEEE Journal of Selected Areas in Communicationsfor the May June issues 1993 covering CDMA networks. Advanced Technology & Networks VISTAR Telecommunications Inc. Ottawa Ontario K1G 3J4 Canada . He is ITU's Specialist Consultant and Chief Advisor for a number of ITU/UNDP projects including VSATs Rural Networks Digital Broadc

In this paper, the performance of a new movable boundary accessing (MBA) technique for future integrated services multibeam satellite systems is studied. The multiservice environment considered includes both asynchronous and isochronous traffic consisting of video, voice, file transfer and interactive data. The movable boundary access technique proposed here will maximize the utilization of the up-link frame capacity. It is shown that the potential user population is substantially increased with the use of a moving boundary policy with minimal overhead.

关键词： MOVABLE BOUNDARY ACCESS TECHNIQUE MF-TDMA DAMA MULTIBEAM SATELLITE

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