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IEEE International Test Conference

作者： N. Sakashita F. Okuda K. Shimomura H. Shimano M. Hamada T. Tada S. Komori K. Kyuma A. Yasuoka H. Abe Advanced Technology R&D Center Mitsubishi Electric Corporation Limited Itami Hyogo Japan LTEC Corporation Itami Hyogo Japan ULSI Laboratory Mitsubishi Electric Corporation Limited Itami Hyogo Japan System LSI Laboratory Mitsubishi Electric Corporation Limited Itami Hyogo Japan

This paper describes the implementation of a BIST circuit with timing margin test functions to a 200 MHz 1 Gbit synchronous drAM. 220 ps-resolution timing signals with up to 80 ns cycle time are generated by a phase-locked loop (PLL) circuit and a delayed timing generator. These timing signals are used not only as actual control signals but also as reference signals in an AC timing comparator. The entire BIST circuit, which includes 20/spl times/4 bit LFSrs, occupies only 0.8% of the chip area. A cost evaluation of the BIST shows that the technology is effective for 64 Mbit high-speed drAMs and beyond.

关键词： Circuit testing Timing Built-in self-test delay Costs Signal generators Phase locked loops AC generators Clocks Frequency

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Multiagent fault‐diagnosis expert system in power systems

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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.

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Application of SOFC for Electric Vehicle

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ECS Proceedings Volumes 1995年第1期1995-1卷

作者： K. Yamada J. Mizusaki H. Sasaki A. Tsunoda H. Yokokawa Y. Yamazaki K. Nakayama Dept. of Chemical System Engineering The University of Tokyo Hongo Tokyo 113 Japan Research Institute for Scientific Measurements Tohoku University Sendai 980 Japan Fundamental Research Lab Osaka Gas Co. Nakadoji Kyoto 600 Japan Corporate R&D Laboratory Tonen Corp. Oimachi Satitama 356 Japan National Institute of Materials and Chemical Research Tsukuba 305 Japan Dept. of Electronic Chemistry Tokyo Institute of Technology Nagatsuda Yokohama 226 Japan Industrial Technology Dept. New Energy and Industrial Technology Development Organization Sunshine 60 Tokyo 170 Japan

Changing from gasoline powered vehicles to electric vehicles (EVs) will provide positive environmental effects. A present disadvantage of EVs with secondary battery systems is a short driving range. This can be improved by the application of a hybrid system of SOFCs and batteries. For that system, both tubular and planer types of SOFCs having 10kW power are designed which can be used for passenger cars with naphtha as fuel operated at 880~850°C. The tubular type has 106 l in volume and 100kg in weight, and were smaller and lighter than the planer type. Subjects to be investigated on SOFCs for EVs are described.

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ArCHITECTUrE ANd NETWOrKING ISSUES IN SATELLITE systemS FOr PErSONAL COMMUNICATIONS

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INTErNATIONAL JOUrNAL OF SATELLITE COMMUNICATIONS 1994年第1期12卷 33-44页

作者： ANANASSO, F CArOSI, M Received the Electronics and Electrical Communications Degree from the University of Rome in 1973 after which he joined Selenia S.p.A (Rome) as a microwave designer in the Development Laboratory. He was involved in several military and civilian projects concerning microwave subsystems for Radar Avionics and Satellite Communications equipment. In 1981 he joined Telespazio S.p.A. (Rome) as Section Chief in the Space and Advanced Programs Division with responsibilities related to satellite payload and digital transmission channel design. In 1987 he was appointed Associate Professor of Digital Signal Processing at the University of Rome Tor Vergata Electronics Engineering Department. In 1990 he again joined Telespazio where he is now Director of the Advanced Studies and Experimentations Division. He has performed a number of studies for National and International Organizations including ESA EUTELSAT INMARSAT and INTELSAT is author of a Radio Systems book a Chapter (‘Digital transmission channel’) of the ‘Satellite Communication System Design’ book by Plenum Publishing (1993) and over 80 technical papers on communication systems and technology. Received the Electronics and Electrical Communications Degree from the University ‘La Sapienza’ of Rome Italy in 1987. From 1987 to 1990 he worked as a Research Engineer in the INFOCOM department of the University ‘La Sapienza’ of Rome carrying out research on design and performance evaluation of multiple access protocols particularly in the metropolitan area network and in the satellite fields. Since 1990 he has been working in the System Studies and Payload group of Telespazio S.p.A. Rome Italy. He is currently involved in projects sponsored by the European Space Agency and by INMARSAT for communications systems via satellite for mobiles both at study and R&D level. Mr Carosi is a member of the IEEE Communication Society.

The paper expands on some specific aspects of personal communications via satellite, often-although not necessarily-envisaging extensive use of 'small' satellites, using orbits not necessarily coinciding with the geostationary one (36,000 km), but rather at 1000-11,000 km altitude. One key point to be borne in mind is the issue of internetworking between satellite and terrestrial systems. Network integration should be carefully implemented in order to comply with ITU future public land mobile telecommunication systems (FPLMTS) requirements, also accepted in the European Telecommunication Standards Institute (ETSI) universal mobile telecommunication systems (UMTS). In addition to some insight into the technology of small satellites and associated orbits, architectures and networking aspects of most relevant systems providing personal communication services (PCS) are addressed in some detail, and potential applications highlighted. Frequency spectrum allocation is addressed in the light of the 1992 World Administrative radio Conference (WArC-92), taking into account also multiple access problems and regulatory issues such as Federal Communications Commission (FCC) licensing and spectrum sharing debates. Some remarks on critical technologies and cost conclude the paper.

关键词： PErSONAL COMMUNICATIONS SMALL SATELLITES NETWOrKING FrEQUENCY SPECTrUM

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PErFOrMANCE OF A PrIOrITIZEd ON-BOArd BASEBANd SWITCH FOr A MULTISErVICE MULTIBEAM SATELLITE

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INTErNATIONAL JOUrNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 283-297页

作者： BOHM, S ELHAKEEM, AK HACHICHA, 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 An Associate Director of Advanced Technology & Networks Group VISTAR Telecommunications Inc. Ottawa Canada. He is also an Adjunct Pr

In this paper, we study the performance of a prioritized on-board baseband switch in conjunction with a multibeam satellite handling integrated services. The services considered for the analysis include voice, video, file transfer and interactive data. The prioritized switch uses both input and output buffering, switch speed-up as well as a two-phase head-of-line resolution algorithm, in order to reduce the buffer loss while maintaining acceptable user delays. The minimum required buffer capacity and switch speed-up for each service in a prioritized environment are found under uniform traffic conditions. It is shown that under uniform traffic conditions, only minimal buffering and switch speed-up are needed even for the lowest priority users. The performance dependence on the switch size is also substantially reduced with head of line resolution and buffering even in a prioritized environment.

关键词： SWITCH ON-BOArd BASEBANd MULTIBEAM PrIOrITIZEd HEAd-OF-LINE UNIFOrM LOAd SPEEd-UP

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developing initial OOA models

Developing initial OOA models

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International Conference on Software Engineering (ICSE)

作者： M. Lubars C. Potts C. richter EDS R&D Austin Laboratories Microelectronics and Computer Technology Corporation Austin TX USA Microelectronics and Computer Technology Corporation Austin TX USA Georgia Institute of Technology College of Computing Georgia Institute of Technology Atlanta GA USA Objective System Solutions Microelectronics and Computer Technology Corporation Austin TX USA

The authors developed an initial object-oriented requirements model for an existing missile planning system. They adopted two approaches: a bottom-up approach in which object-oriented model fragments were constructed that corresponded to segments of the requirements documents, and a top-down approach that was driven by the construction and analysis of scenarios. The strengths and limitations of each approach were discussed in the context of the example. A bottom-up, fragment-driven approach is appropriate in cases where there is a large, rich body of documentation. A top-down, scenario-driven approach should dominate where there is no requirements specification, but some high-level, unintegrated information about how the system should operate.< >

关键词： Object oriented modeling Missiles Marine vehicles Microelectronics Contracts Natural languages research and development Educational institutions documentation Weapons

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developing initial OOA models 93

Developing initial OOA models

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Proceedings of the 15th international conference on Software Engineering

作者： Mitchell Lubars Colin Potts Charles richter EDS R&D Austin Lab 1601 Rio Grande Suite 500 Austin TX and Microelectronics and Computer Technology Corporation Autsin Texas Georgia Institute of Technology College of Computing Atlanta GA and Microelectronics and Computer Technology Corporation Autsin Texas Objective System Solutions P.O. Box 202342 Austin TX and Microelectronics and Computer Technology Corporation Autsin Texas

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MYOGLOBIN

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laboratory MEdICINE 1992年第5期23卷 306-310页

作者： VAIdYA, HC E.I. DuPont de Nemours & Co Inc Medical Products Diagnostics System R&D Division Glasgow Research Laboratory Newark Del.

Myoglobin is a 17,800-d heme protein present in skeletal and cardiac muscle that is rapidly released into the blood circulation following muscle injury in a temporal pattern. In patients with acute myocardial infarction (AMI), the serum myoglobin level becomes abnormal in about 2 hours, peaks in about 6 to 9 hours, and becomes normal in 24 to 36 hours after the infarction. Measurement of myoglobin between 2 and 12 hours after the myocardial infarction has high clinical sensitivity and specificity. However, false-positive results could be encountered because of skeletal muscle damage and renal failure, whereas false-negative results could be seen in patients admitted 24 hours after infarction. False-positive results due to skeletal muscle injury may be eliminated by determining the myoglobin-to-carbonic anhydrase III ratio. Myoglobin can be a good adjunct to electrocardiography in improving the efficiency of early diagnosis of myocardial infarction. Monitoring the myoglobin levels can also help in evaluating the success of thrombolytic therapy. Use of myoglobin as an early biochemical marker for the diagnosis of AMI, its limitations, and the methods for quantitation are discussed.

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TEST OF CLOSEd-LOOP dEGAUSSING ALGOrITHM ON A MINESWEEPEr ENGINE

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NAVAL ENGINEErS JOUrNAL 1992年第3期104卷 219-227页

作者： WINGO, rA HOLMES, JJ LACKEY, MH Robert A. Wingo:is a technical specialist electrical engineer in the Protection Systems Department of the Naval Surface Warfare Center. During his 10 years at NSWC he has been a leader in the development and analysis of systems for the measurement and reduction of static magnetic signatures of mine counter measures vessels and steel hull ships. He currently holds the position of lead scientist of the Engineering Group for the joint U.S.-France Closed-Loop Degaussing Program. His responsibilities have included theory and modeling of static-magnetic fields closed-loop degaussing systems development and implementation scale and full-scale experimentation and the development of fleet magnetic signature measurement facilities. He holds a BSEE degree from Virginia Polytechnic Institute and has published several papers on various topics in magnetic silencing and closed-loop degaussing systems. John J. Holmes:is a principal electrical engineer in the Protection Systems Department of the Naval Surface Warfare Center. Dr. Holmes has been with NSWC for 14 years. During this time he has participated in and technically directed the development of several submarine and surface ship magnetic and electric silencing systems in the ULF (0 to 3 hz) and ELF (3 hz to 3 khz) band. His responsibilities have included threat and vulnerability studies theory and modeling of electromagnetic fields countermeasure systems development scale and full-scale experimentation and data analysis and the development of standards for countermeasure system performance testing and evaluation. He has published over fifty papers on various topics in magnetic silencing and electromagnetic theory. In addition he has participated in several international electromagnetic silencing R&D programs and is a member of the NATO Mine Warfare Working Party. Milton H. Lackey:is a senior physicist in the Protection Systems Department of the Naval Surface Warfare Center. He is currently director of the Center's Magnetic Ship Models Laboratory. During his 30-ye

A closed-loop degaussing technique for MCM (mine countermeasure) class vessels has been developed and tested on a minesweeper engine. The system was designed to accurately predict and degauss the off-board magnetic field signatures from measurements taken on-board a non-magnetic hull naval signature prediction algorithm have been investigated. An on-board sensor configuration, that requires only four single axis gradiometers, has been shown to accurately predict the magnetic signatures of the full-scale engine.

关键词： Warships

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XJp system. An internationalized language interface for the X window system 91

XJp system. An internationalized language interface for the ...

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Proceedings of the ACM Symposium on User Interface Software and Technology

作者： Morisaki, Masato Kawada, Etsuo Kuribayashi, Hiroshi Narita, Masahiko NTT Communications and Information Processing Laboratories Nippon Telegraph and Telephone Corporation 1-2356 Take Yokosuka Kanagawa Japan Computer System R&D Laboratory Omron Corporation Shimokaiinji Nagaokakyo Kyoto Japan Open System Development Group Development Department II Fujitsu Limited 1841-1 Tsuruma Aza 19 Machida Tokyo Japan

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