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Antennas and Propagation Society International Symposium

作者： C.M. Chu S.K. Cho Department of Electrical Engineering and Computer Sciences University of Michigan Ann Arbor MI USA Advanced Concepts Division Environmental Research Institute of Michigan Ann Arbor MI USA

It is shown that the optimal polarizations for a scattering object in the bistatic scattering geometry can be described in a simple way, from which the backscatter case follows readily. For practical computation of optimal polarizations in bistatic scattering, it has been found that the bistatic extension of C. Graves (1956) is much more advantageous than the generalized version of E. Kennaugh (1952), since the solutions of these nonlinear equations are more difficult to obtain.< >

关键词： Polarization Scattering Geometry Eigenvalues and eigenfunctions Backscatter Transmitters Nonlinear equations Sociotechnical systems Sun Voltage

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USE OF computerS IN THE FIELD

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GROUND WATER MONITORING AND REMEDIATION 1986年第2期6卷 126-128页

作者： GRAVENGAARD, GB Gabrielle B. Gravengaard is a geologist in the Water Resources Division at Environmental Science and Engineering Inc. located in Gainesville Florida. Her specialities include hydrogeology and geology. She works with computer ground water modeling and ground water monitoring using state-of-the-art technology. She holds a B.S. in geology from the University of Florida.

Performing long-term pump tests, single-well aquifer tests and long-term ground water monitoring were, in the past, considered costly and labor-intensive tasks. However, because of recent advances in portable data acquisition systems, these field tests can be performed in a relatively cost-effective and efficient manner. Certain data acquisition systems (DAS) have unique options available. Recently developed and commonly used computers are the Envirolab®, the Paroscientific®, and the In-Situ®. The use of implementing DAS in ground water field studies has proved to be successful when compared to the many disadvantages of performing those tasks manually. Successful acquisition of aquifer characterization data using computerized methods is highly dependent on the implementation of proper field programming and operational procedures. In order to provide high qualify and meaningful data, the field operator must be familiar with proper equipment implementation and programming instructions. Once familiar with these procedures, the use of DAS in the field provides a cost-effective and efficient tool for aquifer testing.

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Summary Abstract: Selective‐area epitaxy of GaAs through silicon dioxide windows by molecular beam epitaxy

Journal of Vacuum Science & Technology B: Microelectronics P...

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Journal of Vacuum Science & Technology B: Microelectronics Processing and Phenomena 1986年第2期4卷 629-630页

作者： J. M. Hong S. Wang J. D. Flood J. L. Merz T. Sands J. Washburn Electronic Research Laboratory Department of Electrical Engineering and Computer Science University of California Berkeley California 94720 Department of Electrical and Computer Engineering University of California Santa Barbara California 93106 Department of Materials Science and Mineral Engineering and Materials and Molecular Research Division Lawrence Berkeley Laboratory University of California Berkeley California 94720

J. M. Hong, S. Wang, J. D. Flood, J. L. Merz, T. Sands, J. Washburn; Summary Abstract: Selective‐area epitaxy of GaAs through silicon dioxide windows by molecul

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AN ADVANCED METHODOLOGY FOR PRELIMINARY HULL FORM DEVELOPMENT

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NAVAL ENGINEERS JOURNAL 1984年第4期96卷 147-161页

作者： LIN, WC DAY, WG HOUGH, JJ KEANE, RG WALDEN, DA KOH, IY Wen-Chin Lin:heads the Ship Powering Division at the David Taylor Naval Ship R&D Center (DTNSRDC). Dr. Lin received his B.S. degree in mechanical engineering from the National Taiwan University in 1957. He was awarded his M.S. degree in naval architecture and Ph.D. in engineering science from the University of California at Berkeley in 1963 and 1966 respectively. From 1966 to 1969 he was employed by ESSO Research and Engineering Company to conduct marine hydrodynamic research for oil tankers and offshore structures. Since joining DTNSRDC in 1969 he has actively conducted and directed hydrodynamic research to advance naval ship design technology and improve ship performance. Active in national and international symposia on ship hydrodynamic research he is recognized for contributions to the ship research community. For the past six years he has been a member of the Performance Committee of the ITTC and currently serves as secretary of the committee. He is a member of SNAME and the Society of Naval Architects of Japan. William G. Day Jr:. has been employed as a naval architect at the David Taylor Naval Ship R&D Center since receiving a B.E.S. degree from the Johns Hopkins University in 1966. He obtained an M.S. E. degree from George Washington University in 1971. As Head Design Evaluation Branch of the Ship Performance Department he is responsible for model experiments to evaluate the hydrodynamic performance of ships and propulsors. He is a member of ASNE and SNAME. In-Young Koh:received his B.S. and M.S. degrees in electrical engineering from Lowell University in 1969 and 1971 respectively and his Ph.D. in applied mechanics from Rensselaer Polytechnic Institute in 1976. Dr. Koh joined DTNSRDC as an electronic engineer specializing in the application of advanced instrumentation and computer techniques to ship research and design. He is currently engaged in research and development of active control systems for naval ship applications. Dr. Koh is a member of ASNE SNAME and IEEE. David Andrew Walden:is

A ship design methodology is presented for developing hull forms that attain improved performance in both seakeeping and resistance. Contrary to traditional practice, the methodology starts with developing a seakeeping-optimized hull form without making concessions to other performance considerations, such as resistance. The seakeeping-optimized hull is then modified to improve other performance characteristics without degrading the seakeeping. Presented is a point-design example produced by this methodology. Merits of the methodology and the point design are assessed on the basis of theoretical calculations and model experiments. This methodology is an integral part of the Hull Form Design System (HFDS) being developed for computer-supported naval ship design. The modularized character of HFDS and its application to hull form development are discussed.

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SURFACE AND INTERFACIAL PROPERTIES OF Ga0. 47In0. 53As-Al2O3 MIS STRUCTURES.

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Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures 1983年第3期1卷 782-786页

作者： Mullin, Donald P. Wieder, H.H. Electronic Material Sciences Division Naval Ocean Systems Center San Diego California 92152 Electrical Engineering and Computer Sciences Department University of California San Diego La Jolla California 92093

Field-effect-controlled electrical and galvanomagnetic measurements have been made on transistorlike five-terminal metal insulator semiconductor (MIS) structures using n-type 0. 25 mu m thick Ga//0//. //4//7In//0//. //5//3As epitaxial layers grown on semi-insulating InP substrates. These layers have an electron density n equals 3. 5 multiplied by 10**1**6 cm** minus **3 and a mobility mu //n equals 7. 5 multiplied by 10**3 cm**2/V-s; 0. 13 mu m thick Al//2O//3 dielectric layers, grown by a rf plasma-assisted low temperature chemical-vapor deposition (CVD) process were employed as gate insulators under 0. 01 cm**2 vacuum-deposited aluminum gates. Hall effect and resistivity measurements were made on such structures and the experimentally observed gate voltage dependent change in resistivity and Hall coefficient of the conducting channel under the gate have been related to the corresponding change in the depletion depth of the surface space charge region.

关键词： SEMICONDUCTOR DEVICES, MIS

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RUDDER ROLL STABILIZATION FOR COAST GUARD CUTTERS AND FRIGATES

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NAVAL ENGINEERS JOURNAL 1983年第3期95卷 267-282页

作者： BAITIS, E WOOLAVER, DA BECK, TA Dr. Erich Baitis: a native of Germany came to the David W. Taylor Naval Ship Research and Development Center in 1957 as a co-operative student/trainee and received his Bachelor of Science Degree in Physics from Virginia Polytechnic Institute. As a 32-year-old naval architect in 1971 he received both the VietnamHonorServiceMedaland the Navy'sMeritoriousCivilianServiceAwardfor his eight months as liaison with the Vietnamese NAVVS ferro-cement ship program. As head of the Seakeeping and Stabilization Group of the Surface Ship Dynamics Branch his work has led to the development of a new standard Ship Motion Computer Program and the application of ship motions to ship habitability operability and survivability problems. A major area of this work has been the ship/aircraft interface which is particularly sensitive to ship motions wind and other environmental factors. Mr. Dennis A. Woolaver:has been employed as a Naval Architect at the David W. Taylor Naval Ship Research and Development Center since 1965 where his work has resulted in numerous patents. He received his Bachelor of Science Degree in Electrical Engineering from George Washington University where he also completed graduate work in Communication Theory. Additional fields of study include Computer Science and Personnel Management. Current efforts are directed toward surface ship motion mitigation data acquisition and statistical analysis. He is a member of the Society of Naval Architects and Marine Engineers. Lt. Tom A. Beck USCG: joined the UnitedStatesCoastGuardin 1966 where he trained as an Electronics Technician. He received a Bachelor of Science Degree in Electrical Engineering from Columbia University in 1978. From 1978 to 1979 he was an Electronics Project Officer at the CoastGuardElectronics Laboratory in Alexandria Virginia. Since 1980 he has been a Research and Development Project Officer in the Sensor Technology Branch of the CoastGuardsOffice of Research and Development. Lt. Beck is a member of the Institute of Electronic and Elect

The potential use of rudders as anti-roll devices has long been recognized. However, the possible interference of this secondary function of the rudder with its primary role as the steering mechanism has prevented, for many years, the development of practical rudder roll stabilizers. The practical feasibility of rudder roll stabilization has, however, in recent years been demonstrated by two systems designed and developed for operational evaluation aboard two different U.S. C oast G uard Cutters, i.e., Jarvis and Mellon of the 3,000-ton, 378-foot HAMILTON Class. The authors describe the major components of the rudder roll stabilization (RRS) system, along with the design goals and methodology as applied to these first two prototypes. In addition, a brief history of the hardware development is provided in order to show some of the lessons learned. The near flawless performance of the prototypes over the past four years of operational use in the North Pacific is documented. Results from various sea trials and reports of the ship operators are cited and discussed. The paper concludes with a discussion of the costs and benefits of roll stabilization achieved using both a modern anti-roll fin system, as well as two different performance level RRS systems. The benefits of roll stabilization are demonstrated by the relative expansion in the operational envelopes of the USS OLIVER HAZARD PERRY (FFG-7) Class. The varying levels of roll stabilization suggest that the merits of fins and RRS systems are strongly dependent on mission requirements and the environment. The demonstrated performance of the reliable RRS system offers the naval ship acquisition manager a good economical stabilization system.

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Fuzzy Probabilities and Their Role in Decision Analysis

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IFAC Proceedings Volumes 1982年第1期15卷 15-21页

作者： L.A. Zadeh Computer Science Division Department of Electrical Engineering and Computer Sciences and the Electronic Research Laboratory University of California Berkeley California 94720 USA

The conventional approaches to decision analysis are based on the assumption that the probabilities which enter into the assessment of the consequences of a decision are known numbers. In most realistic settings, this assumption is of questionable validity since the data from which the probabilities must be estimated are usually incomplete, imprecise or not totally reliable. In the approach outlined in this paper, the probabilities are assumed to be fuzzy rather than real numbers. It is shown how such probabilities may be estimated from fuzzy data and a basic relation between joint, conditional and marginal fuzzy probabilities is established. Manipulation of fuzzy probabilities requires, in general, the use of fuzzy arithmetic, and many of the properties of fuzzy probabilities are simple generalizations of the corresponding properties of real-valued probabilities.

关键词： Decision analysis Fuzzy sets Fuzzy probabilities

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Surface spectroscopy

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Applied Physics B Photophysics and Laser Chemistry 1982年第2-3期28卷 229-232页

作者： Liao, P.F. Heinz, T.F. Chen, C.K. Ricard, D. Shen, Y.R. Weitz, D.A. Garoff, S. Alvarez, M.S. Chung, J.C. Wokaun, A. Humphrey, L.M. Stern, M.B. Bechthold, P.S. Kettler, U. Krasser, W. Xie, I.Z. Hemphill, R. Whiteley, S. Gustafson, T.K. Bell Laboratories Holmdel 07733 NJ United States Bell Telephone Laboratories Holmdel 07733 NJ Crawfors Corner Road United States Department of Physics University of California Berkeley 94720 CA United States Materials and Moelcular Research Division Lawrence Berkeley Laboratory Berkeley 94720 CA United States Exxon Research and Engineering Co. Linden 07036 NJ United States Laboratorium für Physikalische Chemie Swiss Federal Institute of Technology Zürich CH-8092 Switzerland TFF KFA Jülich Jülich D-5170 Germany Department of Electrical Engineering and Computer Sciences University of California Berkeley 94720 CA United States The Electronic Research Laboratory University of California Berkeley 94720 CA United States

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Min-Max Determination of Model Parameters with Uncertainty and its Application to the Industry Allocation Model

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IFAC Proceedings Volumes 1981年第2期14卷 1429-1434页

作者： I. Matsuda M. Ishikaw Y. Kaya Electronic Computer Division Electrotechnical Laboratory Ibaraki 305 Japan Faculty of Engineering The University of Tokyo Tokyo 113 Japan

Presented in this paper is a new method for determining model parameters with uncertainty of a large-scale system, and its application to the multi-objective, multi-region, and multi-sector industry allocation model of Japan already developed by the authors. Firstly an opportunity loss is defined on the parameter domain. The criterion for determining uncertain parameters is tantamount to the so-called min-max problem. Since the opportunity loss is not an explicit function of parameters, the conventional procedure for a min-max problem cannot be applied directly. Therefore a modification of the method is also proposed. An application of the proposed approach to the industry allocation model demonstrates its usefulness and effectiveness.

关键词： Sensitivity analysis Nonlinear programming Iteration method Numerical analysis Computational methods

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The transuranic aerosol measurement system and its field results

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IEEE Transactions on Nuclear Science 1980年第1期27卷 742-746页

作者： Kordas, Joseph F. Electronic Engineering Department and Environmental Sciences Division Lawrence Livermore Laboratory Livermore California 94550 P.O. Box 5507. Mail Stop L-524 United States

Sturdy, reliable, sensitive, and strategically placed monitoring instruments play a critical role in evaluating and minimizing the release of long-lived alpha-emitting substances to the environment from nuclear laboratories, fabrication plants, processing facilities, and waste repositories. This paper discusses field results of the Transuranic Aerosol Measurement System (TAMS). (TAMS) a very sensitive measurement system with pseudo real-time response for determining the concentration of transuranics and other long-lived alpha emitters in corrosive stack-effluent streams and ambient air. Field testing of the TAMS prototype at the plutonium finishing facilities of the Rockwell Hanford Operation began in June 1978 and successfully ended in September 1978. The device proved to be at least 100 times more sensitive than presently available monitors. © 1980, IEEE. All rights reserved.

关键词： Aerosols Detectors Effluents Filters Atmospheric measurements Monitoring Instruments Particle measurements Nuclear electronics Reliability engineering

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