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2001 IEEE Porto Power Tech Conference

作者： Laguna-Velasco, R. Fuerte-Esquivel, C.R. Acha, E. Ambriz-Pérez, H. Electrical Engineering Graduate Program Cinvestav IPN P.O. Box 31-438 Guadalajara Jal. 45090 Mexico Facultad de Ingeniería Eléctrica Universidad Michoacana de San Nicolas de Hidalgo Morelia Michoacán 58120 Mexico Electronics and Electrical Department University of Glasgow Glasgow G12 8LT United Kingdom Comisión Federal de Electricidad Unidad de Ingeniería Especializada Mexico D.F. Mexico

ISBN: (纸本)0780371399

The main objective of this paper is to present a simple, general methodology for tracing the power output of each generator, on an individual basis, throughout the electrical power network. The tracing algorithm is based on power flows as given by a load flow solution of the power network. The contribution of each generator to the reactive power flowing in each element of the network becomes readily available. Accurate information as to which generator supplies which load and, in what proportion, is also part of the solution. The veracity and simplicity of the method is demonstrated by a numeric example. © 2001 IEEE.

关键词： Reactive power

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Generalised methodology to trace reactive power flow in electric power systems

Generalised methodology to trace reactive power flow in elec...

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Power Tech Conference

作者： R. Laguna-Velasco C. Fuerte-Esquivel E. Acha H. Ambriz-Perez Electrical Engineering Graduate Program CINVESTAV Guadalajara Jalisco Mexico Facultad de Ingenieria Eléctric Universidad Michoacana of San Nicolas of Hidalgo Morelia Michoacan Mexico Electronics and Electrical Department University of Glasgow Glasgow UK Comisión Federal de Electricidad Unidad de Ingenieria Especializada Mexicali Mexico

关键词： Reactive power Load flow Power generation Power transmission lines Absorption Transmission line matrix methods Circuits Load flow analysis Power systems

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Lead-Orientation-Dependent Wave Function Scarring in Open Quantum Dots

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Physical Review Letters 1999年第23期82卷 4691-4691页

作者： J. P. Bird R. Akis D. K. Ferry D. Vasileska J. Cooper Y. Aoyagi T. Sugano Center for Solid State Electronics Research & Department of Electrical Engineering Arizona State University Tempe Arizona 85287-5706 Nanoelectronic Materials Laboratory Frontier Research Program RIKEN 2-1 Hirosawa Wako-shi Saitama 351-01 Japan

Experimental studies of the conductance of open quantum dots show a series of highly regular oscillations at low temperatures as the voltage applied to their defining gates is varied. Simulations of quantum transport through these dots reveal the oscillations to be correlated to the recurrence of specific groups of wave function scars. We furthermore find that nominally identical dots, differing only in the orientation of their input and output contacts, may be used to excite different families of scars, giving rise in turn to measurable transport results.

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The Deepwater Project - A sea of change for the USCoast Guard

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NAVAL ENGINEERS JOURNAL 1999年第3期111卷 125-131页

作者： Anderson, M Burton, D Palmquist, MS Watson, JM Lieutenant Commander Michael Anderson:serves as the Communications Director for the Coast Guard's Deepwater Project. He has an extensive background in electronic systems with previous work experience including–lead electronics design engineer for the Coast Guard's new HEALY icebreaker supervisor of west coast shipboard electronics projects and Commanding Officer of a regional electronics support command. LCdr. Anderson holds a BS degree in electrical engineering from the Coast Guard Academy MS degrees in electrical engineering and engineering management from Northeastern University and recently received an MS in the management of technology from MIT. Diane Burton:is Surface Technical Director for the U.S. Coast Guard Deepwater Project. Previously she worked as a senior Naval architect in the Hull Form and Hydrodynamics Division of the Naval Sea Systems Command. She has worked for several years on the hydrodynamics of a variety of ship classes with the U.S. Navy U.S. Coast Guard and NOAA. She was responsible for surface ship developments and small combatant stability updates which include the following tasks: Hull Form Design System (HFDS) upgrades Integrated Computation Design Environment Database development for NAVSEA's Hydrodynamics/Hydroacoustics Technology Center Cooperative Research Navies international program for the development for dynamic stability criteria and FFG/DDG class stability. She has a BSE and MSE from the University of Michigan in naval architecture and marine engineering and is presently pursuing a masters of engineering management from George Washington University specializing in systems engineering technology insertion and project management. Commander M. Steven Palmquist:is the Deepwater Project's Assistant Project Manager for C4ISR. A Registered Prokssional Engineer he received an MSEE from the Naval Postgraduate School in 1988. He did undergraduate work in naval architecture at the University of Michigan and is also a graduate of the National Test Pilot School's Avionics Tes

The United States Coast Guard has embarked on the most ambitious modernization and recapitalization project in the service's history. The Deepwater Capabilities Replacement Project, which is simply referred to as Deepwater, is unique in that it comprises the acquisition of an entire integrated "System-of-Systems'': surface, air, (CISR)-I-4 (command, control, communications, computers, information, surveillance & reconnaissance), and logistics facilities. This "System of Systems" approach will enable the Coast Guard to acquire the optimal mix of fully supportable assets, to effectively and efficiently perform all of its Deepwater missions well into the next century.

关键词： Naval warfare

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Insulating state in open quantum dots and quantum dot arrays

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Annalen der Physik 1999年第1期9卷

作者： F. Ge C. Prasad A. Andresen J.P. Bird D.K. Ferry L.-H. Lin N. Aoki K. Nakao Y. Ochiai K. Ishibashi Y. Aoyagi T. Sugano Center for Solid State Electronics Research & Department of Electrical Engineering Arizona State University Tempe AZ 85287-5706 USA Department of Materials Technology Chiba University 1-33 Yayoi-cho Inage-ku Chiba 236-8522 Japan Nanoelectronic Materials Laboratory Frontier Research Program RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan

We describe the observation of novel localization in mesoscopic quantum dots and quantum dot arrays, which are realized in high mobility GaAs/AlGaAs heterojunctions using the split-gate technique. With a sufficient gate voltage applied to form the devices, their resistance diverges as the temperature is lowered below a degree Kelvin, behavior which we attribute to localization. Evidence for the localization is found over the entire range of gate voltage for which the dots are defined, persisting to conductances higher than 50 e 2 / h .

关键词： Localization Quantum dots Scaling

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A Method of Obtaining a Digital Simulator of Continuous-Time Systems for Computer Simulation

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IFAC Proceedings Volumes 1998年第28期31卷 23-27页

作者： Koichi Ichige Masaru Kamada Naohisa Otsuka Rokuya Ishii Doctoral Program in Engineering University of Tsukuba Tsukuba Ibaraki 305-8573 Japan. Department of Computer and Information Sciences Ibaraki University Hitachi Ibaraki 316-8511 Japan. Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Ibaraki 305-8573 Japan. Division of Electrical and Computer Engineering Yokohama National University Yokohama 240-8501 Japan.

We discuss applicability of several s-z transformations to digital simulation of seismic signal propagation. Starting from a digital simulator obtained by the conventional s-z transformation, we locally optimize it wi... 详细信息

关键词： Digital simulation Frequency characteristics Impulse responses

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Revealing dynamical systems and their bifurcation structure hidden by dynamical noise

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electronics and Communications in Japan (Part III: Fundamental Electronic Science) 1998年第11期80卷

作者： Toshiyuki Tega Ryuji Tokunaga Shihoko Kajiwara Takashi Matsumoto College of Information Science Third Cluster University of Tsukuba Tsukuba Japan 305 Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Japan 305 Doctoral Program in Engineering University of Tsukuba Tsukuba Japan 305 Department of Electrical Engineering Waseda University Tokyo Japan 169

This paper discusses bifurcation diagram reconstruction [1, 2] and shows by a numerical experiment that the correct bifurcation diagram of a dynamical system can be reconstructed from the signal of a chaotic dynamical system perturbed by a sufficiently large dynamical noise. It is also verified that the predictor derived using the proposed method not only can approximate the dynamical rules on the attractor, but also has an excellent global approximation ability on a sufficiently large open set containing the attractor. © 1997 Scripta Technica, Inc. Electron Comm Jpn Pt 3, 80(11): 30–45, 1997

关键词： chaos bifurcation nonlinear prediction bifurcation diagram reconstruction dynamical noise

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Corrections to "Optical Generation of a Megahertz-Linewidth Microwave Signal Using Semiconductor Lasers and a Discriminator-Aided Phase-Locked Loop"

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IEEE Transactions on Microwave Theory and Techniques 1997年第10期45卷 1811-1811页

作者： Zhencan F. Fan M. Dagenais Department of Electrical Engineering and Joint Program for Advanced Electronics Materials University of Maryland College Park College Park MD USA

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Computer-aided design of magnetostrictive devices using Terfenol-D

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EUROPEAN TRANSACTIONS ON electrical POWER 1997年第5期7卷 351-359页

作者： Benbouzid, MEH Spornic, SA Body, C Dr. Mohamed El Hachemi Benbouzid (1968) SEE received the B.Sc. degree in Electrical Engineering in 1990 from the Electrical Engineering Institute of Batna University Algeria the MSc. degree in Electrical and Computer Engineering in 1991 from the National Polytechnic Instituteof Grenoble France and the Ph.D. degree also in Electrical and Computer Engineering in 1994 from the National Polytechnic Institute of Grenoble. After graduation he joined the University of Picardie-Jules Verne France where he is Associate Professor at the Professional Institute of Amiens. His currentresearch interests include electric machines anddrives computational of electromagnetics and electromechanical actuation as well as technics for energy savings. He is actually leading a research program on the monitoring and the diagnostics of induction machine drives for the French Picardie Region. He is active in the IEEE Power Engineering Society and is the treasurer of the French Chapter of the IEEE Power Electronics Society. (Laboratoire des Systkmes Automatique Universitk de Picardie-Jules Verne 7. Rue du Moulin Neuf. F-80000 Amiens France Phone: + 33 22 827680 Fax: + 33 22 82 76 82 Sorin Aurel Spornic (1969) received the BSc. degree in Electrical Engineering in 1993 from “Politehnica” University of Bucharest Romania and the M.Sc. degree in Electrical and Computer Engineering. in 1994 from the National Polytechnic Institute of Grenoble France. In 1995 he joint the Electrotechnic Laboratory of Grenoble (L.E.G.) where he is research assistant working towards a PhD. on magnetic materials. (Laboratoire d'Electrotechnique de Grenoble B.P. 46 F-38402 Saint Martin d'Hèkres. France Phone: +3376 82 62 99 Fax: +3376 82 63 00 Christophe Body (1971) received the B.Sc. degree in Electronics in 1993 and the M.Sc. degree in Electrical and Computer Engineering. in 1994 from the National Polytechnic Institute of Grenoble France. In 1994 he joined the Electrotechnic Laboratory of Grenoble (L.E.G.). He received the Ph

This paper describes a model for the non-linear magnetomechanical coupling in new highly magnetostrictive materials. This model is devoted to the Computer-Aided Design of magnetostrictive devices. It is based on an iterative process of successive magnetic and mechanical computations by a the Finite Element Method. Magnetic and mechanical quantities are still coupled by the iterative process. As a matter of fact, the use of experimental data though the Surface Spline Method allows the introduction of the magnetomechanical coupling. The experimental data are collected from a specially designed sample holder devoted to the static characterization of Terfenol-D rods. Comparisons between numerical outputs from the model and the experimental data reveal that the model is quite powerful to describe the magnetomechanical coupling in highly magnetostrictive materials as Terfonal-D. Otherwise, the proposed model has been extended to take into account the magnetostrictive effect in microsystems using highly magnetostrictive thin films. Numerical computations provide in this case coherent results and show that it is able to describe the global behaviour of highly magnetostrictive microsystems.

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Experimental observation of Coulomb staircase in asymmetric tunnel barrier system

Experimental observation of Coulomb staircase in asymmetric ...

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International Electron Devices Meeting (IEDM)

作者： Y. Matsumoto T. Hanajiri T. Toyabe T. Sugano Department of Electrical and Electronics Engineering Toyo University Kawagoe Saitama Japan Department of Information and Computer Science Toyo University Kawagoe Saitama Japan Frontier Research Program RIKEN Institute of Physical and Chemical Research Wako Saitama Japan

The advantages of single electron devices with asymmetrical tunnel barriers (ATBs), proposed by the authors, over conventional single electron devices with symmetrical tunnel barriers (STBs) are discussed by referring to the features of ATBs and the results of computer simulation of the performance of tunnel-junction-load SET logic and turnstile devices. Experimental observation of a Coulomb staircase and asymmetrical tunnel characteristics in ATBs fabricated with GaAs/AlGaAs heterostructures are also reported.

关键词： Single electron devices Temperature Circuits US Department of Transportation Tunneling Thermal resistance Capacitance Computer science Chemical engineering Computer simulation

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