检索结果-内蒙古大学图书馆

Using simulation with hardware verification for teaching computer architecture

computer Applications in engineering Education 1995年第3期3卷 173-173页

作者： Segee, B. Field, J. Littlefield, B. Department of Electrical and Computer Engineering University of Maine Orono Maine 04469—5708 Bruce E. Segee:is an Assistant Professor of Electrical and Computer Engineering at the University of Maine. He received BSEE (1985) and MSEE (1989) degrees from the University of Maine and a PhD from the University of New Hampshire (1992). He is a member of IEEE Eta Kappa Nu Tau Beta Pi and Sigma Xi. Dr. Segee's technical interests are in the areas of computer architecture neural networks instrumentation and industrial automation. He is the co-author of a John Wiley textMicroprogramming and Computer Architecture. John C. Field:is Professor and Chairperson of the Electrical and Computer Engineering Department at the University of Maine. He received the BSEE (1963) MSEE (1965) and PhD (1969) degrees all from Northeastern University. He is a member of IEEE Eta Kappa Nu Tau Beta Pi Sigma Xi and Phi Kappa Phi. Dr. Field's technical interests are in the areas of computers and microprocessor applications. He is the co-author of a John Wiley textMicroprogramming and Computer Architecture.

Material for a computer architecture class based on four progressively more complex microprogrammed circuits is described. The circuits and their associated microassemblers and simulators are discussed. Interestingly, the simulators allow students to understand the workings of the hardware more fully than is possible using the hardware alone.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Electronic classroom assessment techniques: Assessment beyond the classroom in a networked environment

引用

Assessment Update 1995年第6期7卷

作者： Anita Gandolfo Curtis A. Carver Professor of English and director of the Center for Teaching Excellence at the United States Military Academy West Point New York Assistant professor in the Department of Electrical Engineering and Computer Science at the United States Military Academy

来源：评论

学校读者我要写书评

暂无评论

Steady‐state security evaluation of electrical power systems by means of artificial neural network

引用

European Transactions on electrical Power 1995年第2期5卷 91-97页

作者： Chiodo, E. Menniti, D. Testa, A. Picardi, C. Elio Chiodo (1959) received the degree in Electronics Engineering in 1985 and the Ph.D. degree in Computational Statistics both from the University of Naplefltaly. He is a Researcher at the Department of Electrical Engineering of the University of Naples and a member of the Italian Statistical Society. His areas of interest include probabilistic methods applied to electric power systems analysis. (University of Naples Fedrrico 11. Electrical Engineering Dept.via Claudio 21 1-80125 Naplefltaly T +3981/7683226 Fax+3981/2396897) Daniele Menniti (1958) received the degree in Electrical Engineering from the University of Calabria. Cosenzataly and the Ph.D. degree in Electrical Engineering from the University of NapleslItaly in 1984 and 1989 respectively. He is a researcher at the Electronic. Computer and Systems Science Department of the University of Calabria. Italy. Hiscurrent research interests concern electric power system analysis real-time control and automation. (University of Calabria Electronic Computer and Systems Science Dep. Arcavacataji Rende (CS). 1-87036 CosenzdItaly T +39984/494707. Fax +39984/4947 13) Alfredo Testa (1950) received the degree in Electrical Engineering from the University of Naples/Italy in 1975. He is an Associate Professor in Electrical Power Systems at the Department of Electrical Engineering of the University of Naples. He is engaged in researches on electrical power systems reliability and harmonic analysis. (University of Naples Federico 11. Electrical Engineering Dep. via Claudio '2 1 1-80 I25 NapleslItaly T + 39 8 I/7 68 3'2 11. Fax+3981/2396897) Ciro Picardi (1949) received the degree in Electronics Engineering from the University of Naples/Italy in 1975. He is currently Associate Professor in Process Control at the Department of Electronic Computer and System Science of the University of Calabria. Italy. His current research interests are in the area of electrical drives robotics neural networks and fuzzy control. (University of Calabria Electronic. Compu

An artificial‐neural‐network (ANN) application for steady‐state security evaluation of electrical power systems is presented. Such application is based upon a combined use of a multilayer back‐propagation neural network and of an opportune electrical system model, previously proposed by some of the authors. In the paper, the definition of steady‐state security and the problems arising from its on‐line evaluation are briefly recalled. Then, the ANN utilized is described with particular reference to the solutions adopted by the authors. Afterwards, some remarks on the system model utilized are reported. Finally, numerical applications on the AEP‐14 bus system are presented and the results obtained with different ANN configurations are analyzed. Copyright © 1995 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A simplified real frequency independent modal transformation for overhead line switching transient computations

引用

European Transactions on electrical Power 1995年第5期5卷 307-314页

作者： Papagiannis, G. Dokopoulos, P. Dipl.-Ing. Grigoris Papagiannis (1956) studied Electrical Engineering at the Department of Electrical Engineering of the Aristotle University of Thessaloniki/Greece. He received his Dipl.-Eng. degree in Electrical and Mechanical Engineering in 1979. Since 1981 he has been working as a Research Assistant at the Power Systems Laboratory of the Department of Electrical and Computer Engineering at the Aristotle University of Thessaloniki. His special interests are power systems analysis with emphasis in the computation of electromagnetic transients. (Aristotle University of Thessaloniki Department of Electrical and Computer Engineering Power Systems Laboratory P.O. Box 486 GR-54006 ThessalonikV Greece T +30 3 I/99 63 88 Fax +30 3 1/99 63 02) Prof. Petros Dokopoulos (1939) received his Dip1.-Eng. degree in Electrical and Mechanical Engineering from the National Technical University of AthendGreece in 1962 and his Ph. D. degree from the University of Brunswic W Germany in 1967. From 1962 to 1967 he was with the High Voltage Laboratory at the University of Brunswick from 1967 to 1974 with the Nuclear Research Center at Julichl Germany from I974 to I978 with the Joint European Torus. Since 1978 he is full Professor at the Department of Electrical Engineering at the Aristotle University of Thessalonikil Greece. He has worked as consultant with Brown Boveri Cie MannheidGermany Siemens AG ErlangedGermany Public Power Corporation of Greece and with the National Telecommunication Organisation of Greece. His scientific fields of interest include dielectrics power switches generators transmission systems and alternative energy sources. (Aristotle University of Thessaloniki Department of Electrical and Computer Engineering Power Systems Laboratory P.O. Box 486 GR-54006 Thessaloniki/Greece T + 3031/996321 Fax +3031/996302)

Modal transformation technique is a common tool for transmission line transient computations. A simplified modal decomposition of overhead transmission lines, suitable for time‐domain switching (up to 10⁵ Hz) transient computations, is proposed. By neglecting residual terms in the ZY matrix, transformation matrices are approximated as real and frequency independent. The resulting propagation constants remain unaffected from the line being transposed or not, although the existing asymmetries affect transformation matrices. The method can be extended for double circuit lines, provided they have the same configuration. Propagation characteristics, mode decoupling and travelling‐wave transmission effects have been investigated. Results are compared with those obtained from other methods in use. Copyright © 1995 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Audible noise in speed‐controlled inverter‐fed medium‐sized induction motors

引用

European Transactions on electrical Power 1995年第1期5卷 5-13页

作者： Muster, J. Budig, P.K. Belmans, R. Geysen, W. Sattler, Ph.K. Jorg Muster (1955) studied Electrical Engineering at the Technische Hochschule Karl-Mm-StadtlGerrnany from 1974 to 1978. Till 1985 he was Assistant at the chair of Electrical Machines and Drives absolved with promotion about losses and torques of inverter supplied AC machines. From 1985 until 1988 he worked for a tool-machine factory developing high-speed AC drives. Since 1988 he is Scientific Assistant at the chair of Electrical Machines and Drives at the Technische Universität ChemnitdGermany. (TU ChemniWZwickau Dezernat 5.0 Technologietransfer Carolastr. 8 D-09 I l l Chemnitd Germany T +*** Fax +49371/686240) PeW-KlaUs Budig (1928) studied Electrical Engineering at the Technische Hochschule Dresden/Germany from 1948 till 1952. For two years he was Assistant at the chair of Electrical Machines and Drives. From 1954 he was with Sachsenwerk Dresden. He was involved in research and development of amplidyne three-phase commutator-machines DC and AC traction motors thyristor-supplied traction motors. For some years he was Chief Technologist and finally Chief Engineer. At this time he is planning the production of new types of electrical machines like hermetic-motors rolling-mill motors. hydrogenerators and fractional horsepower induction motors. 1966 he got a call as a Professor to theTechnical University at Chemnitz/Germany. His research activities are three-phase linear motors thyristor-supplied DC motors. electric cars. computation of magnetic fields multi-motor AC drives high precision drives for the submicrorneter-range. magnetic bearing and high speed AC drives. (TU ChemnitdZwickau Fachbereich Elektrotechnik Carolastr.8 D-0911 l ChemnitdGermany T+49371/5613323 Fax +49371/5613361) Ronnie J. M. Belmans (1956) received the M.Sc. degree in Electrical Engineering from the Katholieke Universiteit LeuvenBelgium in 1979 the Ph.D. degree from the same university in 1984 and the Special Doctorate in 1989. From 1979 to 1985 he was a member of the staff of the Katholieke Universiteit Leuven. Currently

The audible noise produced by three‐phase, squirrel‐cage induction motors, is caused by the space harmonics of the flux‐density distribution in the air gap of the machine. When the motor is supplied by a frequency inverter in order to control the speed, time harmonics in both current and voltage are present, yielding new components in the audible noise spectrum. In the paper, a number of motor‐inverter combinations are compared for medium‐sized induction motors (90 kW). As a reference case, the motors are supplied with a generator, delivering a variable frequency without harmonics. Theoretical explanations for the increase of the audible noise level and the additional frequency components are given. Copyright © 1995 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Multiagent fault‐diagnosis expert system in power systems

引用

European Transactions on electrical Power 1995年第5期5卷 341-347页

作者： Wang, J.P. Trécat, J. Dr. Jianping Wang is a doctor fellow in the Faculte Polytechnique de Mons in Belgium. His current research field is parallel processing applications in power systems. Dr. Wang obtained his BS degree from Southwest Jiaotong University in P.R. Chinain 1982. From 1982 to 1990 he was appointed as an assistant lecturer. lecturer and associate professor respectively in the electrical engineering department of Southwest Jiaotong University. He obtained his Ph.D in the FacultC Polytechnique de Mons in July of 1993. (BD Dolez 3 1 FPMS B-7000 Mons Belgium T +32-65/37 41 87 Fax +32-65/37 43 00) Professor J. Trécat is a director in the power system laboratory in the Faculty Polytechnique de Mons. He obtained his Ph.D in the University of Manchester Institute of Science and Technology(UM1ST) in U.K. in 1970. He has been working in the fields of power system automation artificial intelligence application and computer vision in the Facult6 Polytechnique de Mons since 1970. He is a senior member of IEEE and he has made much contribution both in electrical engineering education and research. (BD Dolez 3 I FPMS B-7000 Mons T +32-651374185. Fax +32-6513743 00)

In order to solve the speed problem and shallow reasoning problem met in current research in fault diagnosis expert system, this paper presents a model based parallel fault diagnosis expert system for energy management systems (EMS). The Petri net model, which corresponds to the relationship between power system components and their protection systems, has been used for the inference in fault diagnosis. A multiagent parallel processing expert system, which is based on five transputers in Sun workstation, has been built for fault diagnosis purposes. The test results show that this expert system is not only fast but also has better performances. Copyright © 1995 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Product disposal and re-use issues for portable computer design

Product disposal and re-use issues for portable computer des...

引用

IEEE International Symposium on Electronics and the Environment

作者： C. Hendrickson L. Lave F. McMichael D. Siewiorek A. Smailagic Tse-Sung Wu Assoc. Dean Camegie Institute of Technology Department of Civil Engineering Camegie Mellon University Pittsburgh PA USA Higgins Professor of Economics and University Professor Camegie Mellon University Pittsburgh PA USA Walter Blenko Sr. Professor of Environmental Engineering Camegie Mellon University Pittsburgh PA USA Computer Science and Electrical and Computer Engineering Camegie Mellon University Pittsburgh PA USA Visiting Research Scientist Engineering Design Research Center Camegie Mellon University Pittsburgh PA USA Research Assistant. Engineering Design Research Center Camegie Mellon University Pittsburgh PA USA

Portable computers including laptops, notebooks, sub-notebooks and portable digital assistants are a rapidly growing segment of the computer market. Manufacturers of portable computers have an opportunity to win public praise and to avoid censure and liability by embracing green design and sensible product disposal systems. This paper analyzes the environmental issues associated with disposal, re-use and recycling of these machines, focusing on potential design changes to alleviate environmental burdens. Portable computers can replace larger machines, resulting in lower energy use and lower overall material demand. Since the number of portable computers purchased may be as many as 100 million over the next decade, environmental concerns become increasingly important. Portable computers use batteries with toxic components, so there are disposal or recycling problems. Another significant issue in assessment of disposal and recycling processes is the expected life time of portable computers. Machine design with capability for easy upgrade can be expected to have a longer useful life. The paper uses experience gained in several generations of wearable computer designs at Carnegie Mellon University for illustration.< >

关键词： Portable computers Marketing and sales Wearable computers computer aided manufacturing Recycling Batteries Telecommunication computing Vehicles Embedded computing Economic forecasting

来源：评论

学校读者我要写书评

暂无评论

2-DIMENSIONAL FDTD AND TLM

引用

INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS 1994年第2期7卷 141-153页

作者： KRUMPHOLZ, M RUSSER, P Ferdinand-Braun-Institut Für Höchstfrequenztechnik Rudower Chaussee 5 12489 Berlin Germany Michael Krumpholz was born in Bonn Germany in 1966. He received the Dip1.-Ing. degree in electrical engineering at the Technische Universitat Miinchen in 1991. From 1991 to 1992 he worked as a research assistant at the Lehrstuhl fur Hochfrequenztechnik Technische Universitat Miinchen. In 1992 he joined the Ferdinand-Braun-Institut fur Hochstfrequenztechnik in Berlin. His research interests are numerical methods for the solution of Maxwell's equations. Peter Russer was born in Vienna Austria in 1943. He received the Dipl.-Ing. degree in 1967 and the Dr.techn. degree in 1971 both in electrical engineering and both from the Technische Universitat in Vienna Austria. From 1968 to 1971 he was Assistant Professor at the Technische Universitat in Vienna. In 1971 he joined the Research Institute of AEG-Telefunken in Ulm where he worked on fibre-optic communication high-speed solid-state electronic circuits laser modulation and fibre-optic gyroscopes. In 1979 he was co-recipient of the NTG award. Since 1981 he has held the chair of Hochfrequenztechnik at the Technische Universitat Miinchen. He was Visiting Professor in 1990 at the University of Ottawa and in 1993 at the University of Victoria. Since October 1992 he has been Director of the Ferdinand-Braun-Institut fur Hochstfrequenztechnik in Berlin. His current research interests are integrated microwave and millimetre-wave circuits electromagnetic fields statistical noise analysis of microwave circuits and methods for computer-aided design of microwave circuits. Peter Russer is the author of numerous scientific papers in these areas. He is a fellow of the Institute of Electrical and Electronics Engineers (IEEE) and a member of the German Informationstechnische Gesellschaft and the Austrian and German Physical Societies.

Applying the method of moments to Maxwell's equations, Yee's two-dimensional FDTD scheme with central difference approximations and the two-dimensional TLM method are derived from first principles of field theory. By comparing the eigenvalues of the two methods, the differences between two-dimensional FDTD and TLM are illustrated.

关键词：

来源：评论

学校读者我要写书评

暂无评论

TECHNICAL ISSUES REGARDING SATELLITE PACKET-SWITCHING

引用

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 257-267页

作者： IVANCIC, WD CHU, P SHYY, DJ National Aeronautics and Space Administration Lewis Research Center Cleveland Ohio 44135 USA. A design engineer in the Digital Technology Branch of the Space Electronics Division. He has extensive experience in satellite communications systems modulation and coding on-board switching and routeing and high speed digital design. Since joining NASA in 1982 Mr. Ivancic has been responsible for the development of a variety of matrix switch controllers ground terminal equipment numerous pieces of special test equipment a beacon controller for the SARSAT program (Search and Rescue Satellite) and a time-shared decoder for a processing satellite. In addition Mr. Ivancic has been technical contract monitor on a number of advanced communications technology contracts including the Advanced Modulation Technology Development a 5 GHz fibre-optic link and multi-programmable modem study. He was awarded the B.S.E.E. and M.S.E.E. degrees by Cleveland State University in 1982 and 1986 respectively. Cleveland State University Cleveland Ohio 44115 USA. Currently an assistant professor of Electrical Engineering Department at Cleveland State University. He obtained the M.S. and Ph.D. degrees from Iowa State University majoring in Electrical and Computer Engineering. His research interests include high-speed computer networks digital systems and neural networks applications. He is a member of Sigma Xi Phi Kappa Phi as well as the IEEE and ACM. ComSearch Reston Virginia 22091 USA. Received the B.S. degree in electrical engineering from National Chiao-Tung University Hsin-Chu Taiwan in 1983 and the M.S. and Ph.D. degrees in electrical engineering from Georgia Institute of Technology Atlanta GA in 1986 and 1990 respectively. From June 1987 to October 1987 he worked for the Department of Neurology Emory University Atlanta as a Programmer. From September 1989 to December 1989 he worked for the Advanced Development Laboratory. AMP Inc. Atlanta as a Test Engineer. From February 1990 to August 1993 he wor

Many concepts for advanced communication satellite networks have recently been proposed. Critical technical issues relating to satellite packet switching for meshed very small aperture terminal networks and broadband ... 详细信息

关键词： FAST PACKET SWITCH BISDN MESHED VSAT ON-BOARD PROCESSING

来源：评论

学校读者我要写书评

暂无评论

Power factor improvement of three‐phase unbalanced loads with non‐sinusoidal supply voltage

引用

European Transactions on electrical Power 1993年第1期3卷 67-74页

作者： Czarnecki, L.S. Leszek S. Czamecki (1939) received the M. Sc. and Ph. D. degrees in electrical engineering and the D. Sc. degree from the Silesian Technical University Gliwice/Poland in 1963 1969 and 1984 respectively where he was employed as an Assistant Professor. Since 1984 he worked for two years at the Power Engineering Section Division of Electrical Engineering National Research Council of Canada as a Visiting Research Officer. In 1987 he joined the Electrical Engineering Dept. at Zielona Gora Technical University. He is currently working as an Associate Professor in the Electrical and Computer Engineering at the Louisiana State University (LSU). Baton Rouge/USA. His research interests include network analysis synthesis power flow in non-sinusoidal systems and power electronics. (Electrical and Computer Eng. Louisiana State University Baton Rouge/USA Louisiana 70803 T + 1504/388-5239 Fax + 1504/388-5200)

Three‐phase load asymmetry causes a useless current loading of the supply source and this loading increases even more if the supply voltage is non‐sinusoidal. This loading can be expressed quantitatively with the unbalanced current i_u of RMS value ||i_u||. A whole compensation of the unbalanced current i_u was proved to be possible with reactive balancing circuits, however, it may be very complex. This paper shows that a substantial minimization of the unbalanced current i_u may be achieved with such a circuit, but of much lower complexity. The method suggested requires that the unbalanced admittances A_n of the load for harmonic frequencies are known. A harmonic analysis that provides the complex RMS values of the phase voltages and currents harmonics in a cross‐section between the load and the source enables us to determine these admittances and design the balancing circuit. It was shown, moreover, that the reduction of the unbalanced current i_u can be integrated with the reactive current i_r minimization. Copyright © 1993 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：