作者：
Hafner, ANArnold N. Hafner
Ph.D.:is founder and president of Information Systems Research (ISR). He has twenty-five years of experience in systems development and is published in the field of systems development management. He served as corporate research scientist at Systems Exploration Inc. from 1988 to 1991 program director at Computer Science Corporation from 1983 to 1988director of operations at Republic Management Systems Corporation from 1981 to 1983
and program manager at Computer Science Corporation from 1972 to 1981. A 1962 graduate of the US. Naval Academy he holds a doctoral degree in human behavior and engineering degrees in electronics and communications. He has taught courses on information systems and systems management at most of the colleges in the San Diego area. Dr. Hafner has presented fourteen refereed research papers while publishing sixteen articles and a book A Manager's Guide to Software System Development.
Evaluating complex systems is the subject of this paper, the third in a series investigating prototyping. It provides an interesting and helpful overview of how to evaluate systems prototypes and outlines the iterativ...
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Evaluating complex systems is the subject of this paper, the third in a series investigating prototyping. It provides an interesting and helpful overview of how to evaluate systems prototypes and outlines the iterative stream of developer-user interactions that is replacing older approaches to testing and evaluating new military systems, which promise to reduce the time required to develop and field future military capabilities. Changes to the acquisition process, such as those the paper sketches, will facilitate the nation's rapid transit through its current revolution in military affairs.
作者：
Kihara, HHiyama, TMiyauchi, HOrtmeyer, THKumamoto UniversityB.E. and M.S. degrees in Electrical Engineering from Kumamoto University in 1986 and 1988
respectively and is currently in the doctoral program at the university. In 1988 he joined Kyushu Electric Power Co. and is working in the Research Division. B.E.
M.S. and Ph.D. degrees in Electrical Engineering from Kyoto University Japan in 1969 1971 and 1980 respectively. He joined Kumamoto University in 1971 and he has been a Professor of Electrical Engineering and Computer Science since 1989. During the period of June 1985 through September 1986 he was at Clarkson University and was involved with power system harmonics research. His current interests include intelligent control of electric power systems using fuzzy logic control scheme and neural network measurement and real time control of photovoltaic systems and harmonic analysis in distribution systems. He is a senior member of IEEE SICE of Japanand Japan Solar Energy Society.B.E.
M.S. and Ph.D. degrees in Electrical Engineering from Kyoto University in 1981 1983 and 1991 respectively. He joined Kyoto University in 1985. Since 1993 he has been at Kumamoto University and currently is an Associate Professor of Electrical Engineering and Computer Science. His current interests include stabilizing control of electric power system and applications of the Superconducting Magnetic Energy Storage (SMES) to electric power systems. He is a member of IEEE and Institute of Systems Control and Information Engineers of Japan. B.S.E.E. degree in 1972
his M.S.E.E. degree in 1977 and Ph.D. degree in 1980 all from Iowa State University. From 1972 to 1976 he worked in the Operational Analysis Department Commonwealth Edison Company Chicago Illinois. Since 1979 he has been at Clarkson University Potsdam N.Y. where he is a Professor of Electrical Engineering. During the period of July 1993 to June 1994 he was also a Visiting Professor at Kumamoto University Kumamoto Japan. His current interests include harmonic performance po
This paper presents a new switching control scheme for static var compensator (SVC) using fuzzy logic control rules to enhance the overall stability of electric power systems. In addition, the coordination with power ...
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This paper presents a new switching control scheme for static var compensator (SVC) using fuzzy logic control rules to enhance the overall stability of electric power systems. In addition, the coordination with power system stabilizers (PSS) is also considered to achieve a wider stable region. An SVC is set on one of the busbars in the transmission system, where the real power flow signal is utilized at the location of the SVC to determine the firing angle of the thyristor switch. The switching control scheme is simple so as not to require heavy computation on the microcomputer based switching controller. The PSSs are also set on the generators in the study system. Simulation results show the effectiveness of the proposed fuzzy logic switching control scheme for the SVC. The coordination between SVC and PSS is also effective to enlarge the stable region.
Describes the FAST concurrent engineering (CE) implementationmethodology that has been developed by the authors at CranfieldUniversity, through research and consultancy activities. The methodologyis presented in a pa...
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Describes the FAST concurrent engineering (CE) implementationmethodology that has been developed by the authors at CranfieldUniversity, through research and consultancy activities. The methodologyis presented in a paper‐based work‐book and describes three stages acompany could proceed through to take it from an initial interest in CE,to the successful implementation of a pilot CE product developmentproject and then expansion. The focus is on the introduction ofmultidisciplinary product development teams as the main vehicle forradically improving product development performance.
Broadband ISDN (integrated services digital network) should provide various kinds of communication services for multimedia traffic, including voice, computer data, still picture and motion video, and an ATM (asynchron...
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Broadband ISDN (integrated services digital network) should provide various kinds of communication services for multimedia traffic, including voice, computer data, still picture and motion video, and an ATM (asynchronous transfer mode) technology is expected to satisfy those demands. In ATM networks, a VP (virtual path) concept is introduced for simplifying the network resource management. However, if the bandwidth of each VP is fixed, it cannot absorb traffic load fluctuation. In this case, it is likely to happen that one VP has no remaining bandwidth while other VPs on the same physical link have free capacities. Another extremity is that a VP is not introduced, and that all VCs along the same physical link share the whole bandwidth of the link. This can achieve an efficient use of the link, but it apparently requires complicated call set-up procedures. In this paper, we propose a new dynamic VP bandwidth control method, in which the bandwidth allocated to each VP is dynamically changed according to traffic fluctuation. More specifically, in the case that multiple VPs are multiplexed on the same link between two nodes, when the utilization of some VP is increased, that VP requests an additional bandwidth. When the traffic load becomes low and the utilization of a VP is decreased, a part of the assigned bandwidth is released. We consider two methods for this purpose;one is the basic method in which the bandwidth increase request is issued after the VP bandwidth is exhausted. The other is the look-ahead method where the bandwidth increase is requested in advance before the bandwidth starvation. An approximate analysis for the above methods is provided, and the validation of its accuracy is assessed by comparing with simulation results. Through numerical examples, we show that our methods can provide performance improvement in terms of call loss probabilities of each VP.
作者：
Khong Heng PohCurrently
Director and Division Manager of Nordskog‐Diethelm Pte Ltd. a company specialising in the manufacture of aluminium and stainless steel products. Graduated in Mechanical Engineering from the University of Manchester Institute of Science and Technology UMIST in 1968. Served an apprenticeship with Aveling‐Barford Ltd. UK. now Special Vehicles Division of British Leyland. Was engaged in research work at UMIST on the application design and testing of NC machine tools. This was sponsored by a machine tool builder and NC systems manufacturer. Awarded a Ph.D degree in Machine Tool Engineering in 1972. Thereafter was appointed Post‐Doctoral Research Fellow and later as Lecturer to continue with the research programme and consultancy work on NC machines in connection with computer‐aided design and manufacture.
The numerically controlled machine tool has become a very topical subject due to the current emphasis on increasing productivity and upgrading of manufacturing industry. This paper reviews the current applications of ...
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The numerically controlled machine tool has become a very topical subject due to the current emphasis on increasing productivity and upgrading of manufacturing industry. This paper reviews the current applications of NC machine tools in Singapore. It also takes a look at the future directions which NC is likely to develop, particularly in the area of computer aided manufacture, and examines the role of the production engineer within this new environment.
In today's techno world,teachers worldwide can learn the world-famous masterclasses and access all sorts of courses for school teachers. Learners have more learning opportunities based on the excellent sharing of ...
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In today's techno world,teachers worldwide can learn the world-famous masterclasses and access all sorts of courses for school teachers. Learners have more learning opportunities based on the excellent sharing of resources. Technical support is provided in developing the Fuzzy Integrated Cloud Computing Framework (FICCF) to develop Online Courses. This paper explores the educational capabilities of cloud computing, the real-time contact between teachers and students, studying, and heterogeneous terminal access to track evaluation-based fuzzy variables. It addresses the benefits of open-ended modes, creating an English course design system in a cloud-based environment, modifying lecture mode, and reforming the English course design mode. The experimental result shows that the proposed cloud computing framework has better efficiency in developing and promoting English online *** self-learning systems make it possible to provide the best possible learning environment. It ensures that sensitive data generated by an application is deleted, and this feature ensures accuracy.
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