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British Telecom technology journal 1998年第3期16卷 134-144页

作者： Tsui, K.C. Azvine, B. Djian, D. Voudouris, C. Xu, L.Q. Hong Kong Polytechnic University Hong Kong University of Essex King's College London United Kingdom BT Laboratories United Kingdom ATM Traffic Management United Kingdom Manchester University United Kingdom Dynamics and Control Research Group Engineering Department Manchester University United Kingdom Contr. and Instrum. Research Group Staffordshire University United Kingdom Intelligent Systems Research Unit BT Laboratories United Kingdom Dept. of Engineering Mathematics Bristol University United Kingdom Europ. Netwk. Excellence U. Institut d'Informatique d'Entreprise France Oxford University Robotics Research Group United Kingdom University of Nice France Ecole des Mines de Paris France Natl. Technical University of Athens Greece University of Essex United Kingdom Department of Computer Science University of Essex United Kingdom Intelligent Systems Research Group BT Laboratories United Kingdom Southeast University Nanjing China Institute of Acoustics Chinese Academy of Sciences Beijing China University of East Anglia United Kingdom University of Sussex King's College London United Kingdom University of Abertay Dundee United Kingdom

research in human/computer interaction has mainly focused on natural language, text, speech and vision primarily in isolation. Recently there have been a number of research projects that have concentrated on the integration of such modalities using intelligent reasoners. The rationale is that many inherent ambiguities in single modes of communication can be resolved if extra information is available. This paper describes an intelligent multi-modal system called the Smart Work Manager. The main characteristics of the Smart Work Manager are that it can process speech, text, face images, gaze information and simulated gestures rising the mouse as input modalities, and its output is in the form of speech, text or graphics. The main components of the system are the reasoner, a speech system, a vision system, an integration platform and the application interface. The overall architecture of the system will be described together with the integration platform and the components of the system which include a non-intrusive neural network based gaze-tracking system. The paper concludes with a discussion on the applicability of such systems to intelligent human/computer interaction and lessons learnt in terms of reliability and efficiency.

关键词： Learning systems

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Calculation of resonant frequency for an equilateral triangular microstrip antenna with the use of artificial neural networks

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MICROWAVE AND OPTICAL TECHNOLOGY LETTERS 1997年第2期14卷 89-93页

作者： Sagiroglu, S Guney, K Intelligent Systems Research Group Department of Control and Computer Engineering Erciyes University 38039 Kayseri Turkey Department of Electronic Engineering Erciyes University 38039 Kayseri Turkey

new method for calculating the resonant frequency of an equilateral triangular microstrip patch antenna, based on artificial neural networks, is presented The back-propagation algorithm is used to train the networks. The theoretical resonant frequency results obtained by using this method are in very good agreement with the experimental results reported elsewhere. (C) 1997 John Wiley & Sons, Inc.

关键词： triangular microstrip antennas resonant frequency artificial neural networks multilayer perceptron back propagation

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A Knowledge Representation Scheme for Automatic Model Formulation

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IFAC Proceedings Volumes 1997年第4期30卷 365-370页

作者： Xiang Li Christopher P. Jobling Philip W. Grant Control and Computer-Aided Engineering Research Group Departments of Electrical and Electronic Engineering and Computer Science University of Wales Swansea Singleton Park Swansea SA2 8PP UK

A knowledge representation scheme for systems modelling should support system qualification, system decomposition and model composition, and the generation of representations suitable for multiple types of model service. This paper describes a prototype, based on domain specific knowledge representations, aimed at providing multiple model services. The functionality of some typical reasoning rules used for manipulating the knowledge represented in different objects is outlined and the desired features of applications also indicated. The results show that a unified approach, intelligent object-oriented modelling, could provide an ideal approach to the problem of multi-disciplinary system modelling and might be responsible for progress that eases the difficult task of encoding heterogeneous knowledge of realworld applications

关键词： Modelling and Simulation Object-Oriented Programming Knowledge Representation Knowledge-Based Systems computer-aided engineering

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Performance Evaluation of an On-Line Self-Learning Fuzzy Logic controller Applied to Non-Linear Processes

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IFAC Proceedings Volumes 1997年第9期30卷 245-250页

作者： S.H. Ghwanmeh K.O. Jones D. Williams Computer and Control Department Hijjawi Faculty for Applied Engineering Yarmouk University 211-63 Jrbid Jordan Control Systems Research Group School of Electrical Engineering Electronics and Physics Liverpool John Moores University Byrom Street Liverpool L3 3AF United Kingdom E-mail:

The generation of rule-bases in conventional fuzzy logic controllers can be a difficult and time consuming problem for implementation by process operators thus affecting their wider applicability. A Self-Learning Fuzzy Logic control (SLFLC) offers a possible solution. A performance study is therefore presented to evaluate the performance of a proposed SLFLC by analysing its transient performance for a variety of on-line tests and examining its ability to generate a consistent set of rules, based on a predetermined criteria. The results presented show that even with a limited knowledge of the process, the self-learning procedure is able to develop a suitable set of rules and produce a satisfactory process performance with some degree of robustness and repeatability when applied to a non-linear single-input single-output (SISO) or multi-input multi-output (MIMO) laboratory liquid-level processes.

关键词： Fuzzy logic self-adaptive control on-line control non-linear control

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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Influence of human engineering on manning levels and human performance on ships

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NAVAL ENGINEERS JOURNAL 1997年第5期109卷 67-76页

作者： Anderson, DE Oberman, FR Malone, TB Baker, CC David E. Anderson:has a bachelor of science degree in environmental engineering from Florida Technological University and a master's degree in environmental engineering from the University of Central Florida. He is a graduate of the Naval Sea Systems Command's Engineer-In-Training (EIT) Program. Mr. Anderson was instrumental in introducing the collective protection system (CPS) in the U.S. Navy developing the initial forward-fit package for the USS Gunston Hall and the engineering change proposal (ECP) for the USS Wasp. In 1990 he joined the Human Systems Integration (HSI) Division (SEA 55W5) where he was task leader for auxiliary ships. He is currently the HSI manager for the future technology variant of the SeaLift ship and the future carrier. Association of Scientists and Engineers 33rdAnnual Technical Symposium 26 April 1996. Fred R. Oberman:has B.A. and M.A. degrees from the University of Chicago and Loyola University (experimental psychology) and an M.S. degree in industrial engineering and operations research from Virginia Polytechnic Institute (VPI). He has more than 30 years experience in HSI management planning research analysis design and testing in government and private sector positions. He is currently responsible for NavSea HSI generic research and tool development efforts. He is responsible for Human Engineering Specifications and Standards (Commercial Hypertext) and is the NavSea 03D7 representative on HSI in Performance Specifications and for integration of HSI within Integrated Logistic Support (ILS). He has served as DoD HSI SubTAG chair and member of the Simulation and Modeling Test and Evaluation Display and Control Systems Human Computer Interaction Specifications and Standards and Systems Design Sub Tags as a member of the Society of Naval Architects and Marine Engineers (SNAME) Systems Safety Panel and a member of NATO RSG 14 on man-machine analysis. Thomas B. Malone: CHFEP received a Ph.D. in experimental psychology from Fordham University in 1964. He is president of Carlow

The objectives of Human engineering (HE) are generally viewed as increasing human performance, reducing human error, enhancing personnel and equipment safety, and reducing training and related personnel costs. There are other benefits that are thoroughly consistent with the direction of the Navy of the future, chief among these is reduction of required numbers of personnel to operate and maintain Navy ships. The Naval research Advisory Committee (NRAC) report on Man-Machine Technology in the Navy estimated that one of the benefits from increased application of man-machine technology to Navy ship design is personnel reduction as well as improving system availability, effectiveness, and safety The objective of this paper is to discuss aspects of the human engineering design of ships and systems that affect manning requirements, and impact human-performance and safety The paper will also discuss how the application of human engineering leads to improved performance, and crew safety, and reduced workload, all of which influence manning levels. Finally, the paper presents a discussion of tools and case studies of good human engineering design practices which reduce manning.

关键词： Human engineering

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An Object-Oriented Information Model for Intelligent Modelling

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IFAC Proceedings Volumes 1996年第1期29卷 4410-4415页

The principal objective of this paper is to report on the development of a framework for intelligent modelling aimed at the formulation of models for science and engineering systems. After an introduction of the features of modelling, three aspects and three basic steps of particular relevance to the modelling framework are indicated. In particular, the knowledge structure of modelling will be considered in the context of both the modelling process and the functionality of system representation. The main body of the paper is concerned with describing the object-oriented information model for modelling which will form the heart of the knowledge-based system together with remarks on aspects of its usability.

关键词： Modelling and Simulation Knowledge-Based Systems Object-Oriented Programming computer-aided engineering

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Convergence Rates for Learning control Algorithms-A Repetitive Process Theory Approach

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IFAC Proceedings Volumes 1996年第1期29卷 5381-5386页

作者： N. Amann D.H. Owens E. Rogers Centre for Systems and Control Engineering School of Engineering University of Exeter Exeter EX4 4QF UK Image Speech & Intelligent Systems Research Group Department of Electronics & Computer Science University of Southampton Southampton SO17 1BJ UK

This paper presents significant new results on the stability and convergence properties of a general class of iterative learning control schemes derived using two-dimensional(2D) systems theory. These results apply for a general learning law which (explicitly) uses information from previous iterations or trials. A key feature of these results is that they are expressed in terms of standard linear systems theoretic properties, such as relative degree and the location of the zeros.

关键词： Learning algorithms control convergence analysis

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The Influence of Boundary Conditions on The Stability of Repetitive Processes Modelled as 2D Linear Systems

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IFAC Proceedings Volumes 1996年第1期29卷 1599-1602页

作者： Eric Rogers David H Owens Image Speech & Intelligent Systems Research Group Department of Electronics & Computer Science University of Southampton Southampton S017 1BJ UK Centre for Systems and Control Engineering School of Engineering University of Exeter Exeter EX4 4QF UK

Repetitive, or multipass, processes are uniquely characterized by a series of sweeps, or passes through a set of dynamics defined over the so-called pass length which is finite and constant. The unique systems theoretic/control problem is that the sequence of outputs, or pass profiles, can contain oscillations which increase in amplitutde in the pass to pass direction. These processes can be modelled as a class of quarter plane causal 2D linear systems and this paper shows that the boundary (or pass initial) conditions alone can destabilize them. Hence they must be 'adequately modelled' in a given application and it is the boundary conditions which essentially distinguish the dynamic behaviour of linear repetitive processes from other classes of 2D linear systems.

关键词： Multi-dimensional Systems Stability Criteria Tests

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A Simulation Model for the Compression of Audio Information

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International Journal of Modelling & Simulation 1996年第1期16卷 21-21页

作者： Kwong, S. Man, K. F. Department of Computer Science City University of Hong Kong Kowloon Hong Kong Department of Electronic Engineering City University of Hong Kong Kowloon Hong Kong University of Waterloo Control Data Canada Bell Northern Research City University of Hong Kong Department of Computer Science Cranfield Institute of Technology United Kingdom UK Aerospace Industry Electronic Engineering Department City University of Hong Kong IFAC Real-time Control Computing Working Group IFAC IEEE

Advances in signal processing allow us to model the audio signal in terms of mathematical representation. Compressed audio signal are also important for low-bit-rate media in order to minimize transmission cost. Applications such as movies on compact disc, audio conferencing, and digital television also require a good model for the audio compression. We present a model for compressed audio signal. By varying different modelling parameters, we obtain the simulation result of the proposed model of the audio coder. Simulation results found that it has a good compression Ssignal-to-noise ratio compared with NICAM, CD, and OCF coders.

关键词： Adaptive transform coding Discrete cosine transform Extended lapped transform Modified hermite transform Signal-to-noise ratio

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