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Special Section: Navigation in information-Intensive Environments

Journal of Management information systems 1995年第4期11卷 5-8页

作者： Tomás Isakowitz Michael Bieber Assistant Professor of Information Systems Stern School of Business New York University Assistant Professor of Information Systems Computer and Information Science Department New Jersey Institute of Technology Director Hypermedia Information Systems Research Lab New Jersey Institute of Technology JOVE Faculty Fellow Automation Technology Section Goddard Space Flight Center NASA

The article discusses various reports published within the issue, including one by James B. Baty, II and Ronald M. Lee on electronic commerce and another by Minder Chen on executive information systems.

关键词： information storage and retrieval systems Vendors Multimedia materials Shopping information access Internet information resources Architectural models Design information retrieval

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H/sub /spl infin// vibration control of active suspension for automotive application

H/sub /spl infin// vibration control of active suspension fo...

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SICE Annual Conference

作者： A. Kanbolat Y. Okuyama F. Takemori L. Gianone S. Horvat J. Bokor Department of Information and Knowledge Engineering Facult of Engineering Tottori University Japan Tottori Daigaku Tottori JP Dept. of Inf. & Knowledge Eng. Tottori Univ. Japan Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Hungary Department of Transpoi-talion Engineering Technical University of Budapest Hungary

This paper deals with simultaneous control of acceleration transmission, wheel load fluctuation, suspension deflection and sprung mass displacement. The control theory is based on the robust H/sub /spl infin// control theory with the consideration of the modeling errors lumped into an unstructured uncertainty acting on the unperturbed plant. The design method is new and powerful for electronic car suspension's control systems, as it presents a new approach to the designers for the computation of a controller maintaining robust stability while guaranteeing the performance in a wide frequency range, even in the case of the controller is applied to the actual plant. Additionally, the paper emphasizes that the assumptions in the modeling step may lead to unrealistic control designs and, as an example, the effect of the rigidity assumption on the behavior of the open loop system is discussed.

关键词： Control systems Control theory Open loop systems Displacement control Weight control Acceleration Wheels Fluctuations Robust control Power system modeling

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An optimal algorithm for approximate nearest neighbor searching 94

An optimal algorithm for approximate nearest neighbor search...

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Proceedings of the fifth annual ACM-SIAM symposium on Discrete algorithms

作者： Sunil Arya David M. Mount Nathan S. Netanyahu Ruth Silverman Angela Wu Max-Planck-Institut für Informatik Im Stadtwald D-66123 Saarbrücken Germany Department of Computer Science and Institute for Advanced Computer Studies University of Maryland College Park Maryland Space Data and Computing Division NASA Goddard Space and Flight Center Greenbelt Maryland and Center for Automation Research University of Maryland College Park Maryland Department of Computer Science University of the District of Columbia Washington DC and Center for Automation Research University of Maryland College Park Maryland Department of Computer Science and Information Systems The American University Washington DC

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On the reconfiguration of degradable VLSI/WSI arrays

On the reconfiguration of degradable VLSI/WSI arrays

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IEEE International Workshop on Defect and Fault Tolerance in VLSI systems, DFT 1993

作者： Low, C.P. Leong, H.W. Algorithms and Design Automation Laboratory Department of Information Systems and Computer Science National University of Singapore Lower Kent Ridge Road Singapore0511 Singapore

ISBN: (纸本)0818635029

This paper consider the problem of reconfiguring VLSI/WSI arrays via the degradation approach. In this approach, all elements are treated uniformly and no elements are dedicated as spares. The goal is to derive a fault-free subarray T from the defective host array such that the dimensions of T are larger than some specified minimum. This problem has been shown to be NP-complete under various switching and routing constraints. However, we show that a special case of the reconfiguration problem with row bypass and column rerouting capabilities, is solvable in polynomial time using network flows. Using this result, a new fast and efficient reconfiguration algorithm is proposed. Empirical study shows that the new algorithm indeed produce good results in terms of the percentages of harvest and degradation of VLSI/WSI arrays. © 1993 IEEE.

关键词： Polynomial approximation

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On the configuration of degradable VLSI/WSI arrays

On the configuration of degradable VLSI/WSI arrays

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IEEE International Symposium on Defect and Fault Tolerance in VLSI systems

作者： C.P. Low H.W. Leong Algorithms and Design Automation Laboratory Department of Information Systems & Computer Science National University of Singapore Singapore

The authors consider the problem of reconfiguring VLSI/WSI arrays via the degradation approach. In this approach, all elements are treated uniformly and no elements are dedicated as spares. The goal is to derive a fault-free subarray T from the defective host array such that the dimensions of T are larger than some specified minimum. This problem has been shown to be NP-complete under various switching and routing constraints. However, it is shown that a special case of the reconfiguration problem with row bypass and column rerouting capabilities, is solvable in polynomial time using network flows. Using this result, a new fast and efficient reconfiguration algorithm is proposed. Empirical study shows that the new algorithm indeed produces good results in terms of the percentages of harvest and degradation of VLSI/WSI arrays.

关键词： Degradation Routing Switches Polynomials Logic arrays Design automation Laboratories information systems computer science Turning

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A heuristic-based car shop scheduling application 4

A heuristic-based car shop scheduling application

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4th International Conference on Tools with Artificial Intelligence, ICTAI 1992

作者： Srinivasan, V. Fabens, W. Department of Computer Science Center for Automation and Intelligent Systems Research Case Western Reserve University ClevelandOH44106 United States Information Technology Branch B.P. Research WarrensvilleOH44128 United States

ISBN: (纸本)0818629053

Scheduling is a complez process involving several jobs, resources and constraints. In this paper we describe the formulation of a heuristic based carshop schedu,ling application. The CarShop schedu,ling problem involves schedu,ling repair jobs on cars, given restrictions on operator availability and other resource/time constraints. The problem is solved by taking a intelligent generate and test approach and eztending the simple notion of schedu,ling - the allocation of resources to tasks over time within constraints defining the system. Dispatch of tasks for schedu,ling and allocation of resources to them are gu,ided by a set of heuristics. The system is bu,ilt on a 'USer-eztensible knowledge base of ru,les and heuristics written in Prolog. The emphasis in the system is on providing a fiezible AI problem representation and also collecting some empirical resu,lts on the performance of different heuristics in the system. © 1992 IEEE.

关键词： Knowledge based systems

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An experimental system for optical detection of layout errors of printed circuit boards using learned CNN templates 2

An experimental system for optical detection of layout error...

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2nd International Workshop on Cellular Neural Networks and their Applications, CNNA 1992

作者： Szolgay, P. Kispál, I. Kozek, T. Dual and Neural Computing Systems Laboratory Computer and Automation Institute Hungarian Academy of Sciences P.O.B.63 BudapestH-1502 Hungary Department of Information Technology Faculty of Engineering University of Veszprém Egyetem u. 10 VeszprémH-8201 Hungary

ISBN: (纸本)0780308751

Cellular neural networks (CNNs) are considered here as cellular analog programmable multidimensional processing arrays with distributed logic and memory. The interconnecting weights between the neighbouring processing elements are defined by the template *** the paper a new systematic way is presented to find robust templates. Using the new learning algorithm some templates were found for a CNN based layout design rule checking algorithm. The algorithm has been tested in our experimental system with real life examples. A typical design rule checking of a 432×164 pixels area takes 8s computation time on our CNN hardware accelerator board. © 1992 IEEE.

关键词： Cellular neural networks

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Optical tracking System for automatic guided vehicles using cellular neural networks 2

Optical tracking System for automatic guided vehicles using ...

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2nd International Workshop on Cellular Neural Networks and their Applications, CNNA 1992

作者： Eröss, Gy. Boros, T. Kiss, Á. Radványi, A. Roska, T. Bitó, J. Vass, J. Tungsram TH Co. Ltd Centre of Robotics and Automation Václ ut 77 BudapestH-1340 Hungary Dual and Neural Computing Systems Laboratory Computer and Automation Institute of the Hungarian Academy of Sciences P.O.B.63 BudapestH-1502 Hungary Dep. of Information Technology Faculty of Engineering University Veszprém Egyetem u. 10 VeszprémH-8201 Hungary

ISBN: (纸本)0780308751

computer Integrated Manufacturing (CIM) systems having determining role in the modern industry. These systems contain essentially two different equipments for transporting materials between workstations: - conveyors can be used if the path of transportation is fixed and known in advance, or - if the path of the transportation may change or there are various tasks to be solved along the path, the use of Automatic Guided Vehicles (AGV) is strongly recommended. The path control of an AGV in CIM systems is generally solved either by following an inductive wire or by determining its position and orientation from signals provided by transmitters mounted at some characteristic points of the workshop. Both of these basic methods have their advantages and drawbacks. © 1992 IEEE.

关键词： Automatic guided vehicles

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A heuristic-based car shop scheduling application

A heuristic-based car shop scheduling application

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International Conference on Tools for Artificial Intelligence (ICTAI)

作者： V. Srinivasan W. Fabens Department of Computer Science & Center for Automation and Intelligent Systems Research Case Western Reserve University Cleveland OH USA Information Technology Branch B.P. Research Warrensville OH USA

The formulation of a heuristic-based car-shop scheduling application is described. The problem involves scheduling repair jobs on cars, given restrictions on operator availability and other resource/time constraints. The problem is solved by taking an intelligent generate-and-test approach and extending the simple notion of scheduling-the allocation of resources to tasks over time within constraints defining the system. Dispatch of tasks for scheduling and allocation of resources to them are guided by a set of heuristics. The system is built on a user-extensible knowledge base of rules and heuristics written in Prolog. The emphasis in the system is on providing a flexible AI problem representation and also collecting some empirical results on the performance of different heuristics in the system.< >

关键词： Job shop scheduling Optimal scheduling Processor scheduling Testing Costs Application software Time factors Resource management information technology computer science

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Optical tracking system for automatic guided vehicles using cellular neural networks

Optical tracking system for automatic guided vehicles using ...

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IEEE International Workshop on Cellular Nanoscale Networks and their Applications, (CNNA)

作者： G. Eross T. Boros A. Kiss A. Radvanyi T. Roska J. Bito J. Vass Centre of Robotics and Automation Tungsram TH Company Limited Budapest Hungary Dual and Neural Computing Systems Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary Department of information Technology Faculty of Engineering University of Veszprém Veszprem Hungary

A method for the path-control of automated guided vehicles (AGVs) in computer integrated manufacturing (CIM) systems that combines the flexibility and easy installation of optical methods with the simplicity and robustness of the inductive method is proposed. Using a new computing paradigm, the cellular neural network (CNN), and a related device, the VLSI CNN chip, a very high speed solution that is less expensive than the conventional methods can be achieved. This AGV control complies with the requirements of CIM systems. Further advantages of the proposed system are as follows: fault tolerance and the ability to give instructions along the path, and the use of a simple local control.< >

关键词： Vehicles computer integrated manufacturing Cellular neural networks High speed optical techniques Control systems Integrated optics Optical computing Robustness computer networks Very large scale integration

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