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Proceedings of 26th Southeastern Symposium on System Theory

20-22 March 1994

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Displaying Results 1 - 25 of 129
  • Proceedings of 26th Southeastern Symposium on System Theory

    Publication Year: 1994
    Request permission for commercial reuse | PDF file iconPDF (130 KB)
    Freely Available from IEEE
  • Algorithm and architecture for feature extraction in image recognition

    Publication Year: 1994, Page(s):448 - 452
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    The authors present a method of measuring the degree of similarity of handwritten characters. This method is based on the segments of handwritten characters. Each handwritten image is decomposed into several segments. Then they compare the segments which belong to different handwritten images using their distance fields. The result is distance of two handwritten images. These distances can be used... View full abstract»

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  • An efficient image coding implementation using the quadtree algorithm

    Publication Year: 1994, Page(s):453 - 456
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    The authors present a novel approach to image processing that uses a straightforward quadtree algorithm. They store in computer memory the regional address and pertinent information attributes. They then can recall and restore the image to its original state. Advantages to using this approach include reduction in memory required to store the entire image and a simplification of the overall image s... View full abstract»

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  • A CMOS VLSI IC for real-time opto-electronic two-dimensional histogram generation

    Publication Year: 1994, Page(s):390 - 394
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Histogram generation, a standard image processing operation, is a record of the intensity distribution in the image. A prototype of an optical-electronic histogram generator has been designed and tested for 1D objects using wirewrapped MSI TTL components (Richstein et al. 1993). The overall system design is such that the electronic signal obtained from the optically scanned two-dimensional semi-op... View full abstract»

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  • A new method for the analysis and design of Chebyshev arrays

    Publication Year: 1994, Page(s):157 - 161
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Traditionally, the analysis and design of Chebyshev arrays have been carried out with the help of Chebyshev polynomials. This approach has the drawback that every time the number of elements is changed a different Chebyshev polynomial needs to be considered. In the present paper, a new approach to the analysis and design of Chebyshev arrays is presented which makes no direct use of Chebyshev polyn... View full abstract»

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  • Point dissipative 2D systems with conservative homogeneous nonlinear term

    Publication Year: 1994, Page(s):316 - 320
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    We study a class of nonlinear dynamical systems whose nonlinear terms are homogeneous polynomials of degree m. A system is point dissipative if there exists a closed bounded set which every trajectory eventually enters and remains within. This is an extension of previous results for homogeneous quadratic polynomials View full abstract»

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  • Formal model for verifying compatibility among transactions

    Publication Year: 1994, Page(s):76 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    One major problem common to all semantic-based concurrency control systems that have been previously proposed is that of verifying that the allowable (nonserializable) schedules are mutually consistent. In all proposed methods, the verification was assumed to be done by the user. This assumption is both risky and unreasonable for complex database applications. Thus, a formal model is needed so tha... View full abstract»

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  • Image data compression using multiple bases representation

    Publication Year: 1994, Page(s):457 - 461
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    Digitized images contain huge amounts of information which strain, or exceed, the capacity for their real-time processing, storage, and retrieval. Various compression techniques have been developed to reduce the amount of data necessary for representation. The authors report on a hybrid image data compression procedure based on a multiple bases representation. The multiple bases representation tec... View full abstract»

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  • Designing portable module generators using the Alliance CAD system

    Publication Year: 1994, Page(s):395 - 399
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The authors describe the design steps of portable generators for CMOS circuits. Starting from a parameterized behavioral description to obtain a layout, the methodology indicates how to specify, build and validate the layout view of parameterized module generators. This methodology uses Alliance CAD system tools for both generation and validation. The layout placement uses a tiler and leaf cell ap... View full abstract»

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  • Design of an industrial controls laboratory

    Publication Year: 1994, Page(s):618 - 622
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    To better prepare our students for new opportunities, Ohio University has developed an industrial controls laboratory for electrical engineers. The laboratory requires the student to apply a theoretical controls background to a mechanical process, controlled with traditional industry components. A Commercially available laboratory set-up containing both a hydraulic and thermal system is used for t... View full abstract»

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  • Force embedding of a planar graph

    Publication Year: 1994, Page(s):2 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    The planar embedding of a planar graph with the simultaneous minimization of an objective function of graph edge lengths is considered. It is shown that the so-called force embedding of a planar graph dictates a distinctive placement of the graph vertices and edges. This placement is a rectilinear edge embedding in which there are no edge intersections and the quadratic objective function of the e... View full abstract»

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  • Study of eigenmode propagation and simulation of multiconductor microstrip transmission line crosstalk

    Publication Year: 1994, Page(s):162 - 166
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    The time response of coupled microstrip transmission line, obtained by modal analysis in frequency domain, has been studied. The authors have examined both voltage and current waves at each frequency component of the source by writing them explicitly in terms of eigenmodes. It is seen that, in general, all eigenmodes, whose numbers are equal to the number of signal conductors, are present in both ... View full abstract»

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  • The group properties of the algebraic Riccati equations

    Publication Year: 1994, Page(s):321 - 322
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    In this paper some group properties of the algebraic Riccati equation are discovered. These priorities allow us to get brief and simple substantiation of using matrix-sign function method to solving Silvester (and Lyapunov as a particular case) equation. Also some computational aspects of matrix signum calculating are discussed, and some numerical tests' results are represented View full abstract»

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  • Initial progress with information engineering ICASE tools for developing command and control systems

    Publication Year: 1994, Page(s):82 - 86
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Provides an overview of initial progress with developing command and control applications using a commercially available ICASE toolset based on the information engineering methodology. The authors have included basic introductory sections on software engineering and information engineering as well as an overview of the Information Engineering Facility. Finally, they discuss their developments to d... View full abstract»

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  • Wavelet transform for image data compression

    Publication Year: 1994, Page(s):462 - 465
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    Derives a new compactly supported wavelet using the Daubechies approach. The construction of a “mother wavelet” is based on the notion of multiresolution analysis and is derived using the theory of compactly supported wavelet bases. The FIR filter related to this wavelet has 22 taps which leads to a regular wavelet with a high number of vanishing moments. The new wavelet and its dilate... View full abstract»

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  • Preliminary developments with the Linda programming environment for signal processing and control applications

    Publication Year: 1994, Page(s):557 - 561
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    The paper provides an overview of the Linda parallel programming paradigm and toolset and preliminary developments in adapting them for signal processing and control applications. Topics discussed include an overview of the Linda tuple-space paradigm, a brief overview of the Linda programming techniques, a summary of on-going developments in adapting these tools for signal processing and control a... View full abstract»

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  • Short-time stability analysis of time-varying linear systems

    Publication Year: 1994, Page(s):302 - 304
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB)

    This paper introduces a rather simple but effective procedure for short-time stability analysis of linear dynamical systems. Useful information regarding short-time stability are obtained from time domain analysis of “eigenvalues”. It is observed that a system which is ruled out to be unstable can still be stable for a short time or a system which is said to be stable might be just sho... View full abstract»

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  • Piece-wise stability analysis of nonlinear robot arm via singular perturbations

    Publication Year: 1994, Page(s):59 - 63
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The method of singular perturbations is applied to the control and stability analysis of robot arms. A robot arm including the actuator dynamics is a typical example of a singularly perturbed system due to the actuator dynamics occurring in a much faster time scale as compared to the manipulator dynamics. A control law based on the fast and the slow control separately is proposed with the addition... View full abstract»

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  • A survey of incipient fault detection and location techniques for extruded shielded power cables

    Publication Year: 1994, Page(s):402 - 405
    Cited by:  Papers (8)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The existing techniques for the detection and location of incipient faults (e.g. electrical trees) in extruded shielded power cables are reviewed. Only the techniques developed for field applications are included. The advantages and disadvantages of each technique are evaluated from the point of view of a power engineer. The desired features of an ideal incipient fault detection and location syste... View full abstract»

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  • Indirect schemes for adaptive linearizing control of a continuous stirred tank reactor

    Publication Year: 1994, Page(s):623 - 627
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    In this paper, the authors consider the application of two different indirect schemes for parameter adaptive linearizing control of a continuous stirred rank reactor. The first scheme is based on an identifier structure that assumes that the complete state of the reactor system is measured. For the second scheme, they construct a finite dimensional adaptive nonlinear observer for the reactor syste... View full abstract»

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  • A VLSI implementation of a thresholder for real-time image segmentation

    Publication Year: 1994, Page(s):7 - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    Presents an algorithm to segment images dynamically and in real-time. The proposed approach utilizes a recursive learning model for thresholding each individual pixel in an image. A VLSI design and implementation of the thresholder is presented. The system features high reliability and effectively applicable to a variety of signals and images View full abstract»

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  • Fuzzy modelling of dynamic systems

    Publication Year: 1994, Page(s):168 - 171
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    This paper deals with fuzzy modelling of complex dynamic systems. Fuzzy relational equations are used to describe dynamic systems' behavior. A prediction algorithm is proposed and the procedure to update the fuzzy relation of the model as new measurements are collected is discussed. The algorithm is applied to the prediction of chaotic time-series View full abstract»

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  • Global optimization of stochastic multivariable functions

    Publication Year: 1994, Page(s):323 - 326
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    This paper presents a new methodology for global optimization of a stochastic multivariable functions subject to stochastic, possibly nonlinear constraints. Least squares parametric estimation is applied as an intermediate step in the stochastic optimizer which then uses a special transformation to capture the global optima estimate. A comparative study of implementing estimation in polynomial lea... View full abstract»

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  • Implementation of abstract interpretation algorithms by means of attribute grammar

    Publication Year: 1994, Page(s):87 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    In logic programming, “dixit” Bruygnooghe, the purpose of abstract interpretation is the construction of a finite AND/OR tree and the “computation” of a correct abstract substitution at each node of that tree. The authors consider an abstract substitution as an attribute attached to the nodes of a tree, and then the propagation process of abstract substitutions through the ... View full abstract»

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  • Cost-benefit analysis of electric power system reliability

    Publication Year: 1994, Page(s):468 - 472
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The purpose of this investigation is to determine an appropriate cost-benefit formula that will help the power system planners in prioritizing transmission system projects. This paper deals with describing the value of increased reliability and security in bulk power systems. Three different approaches used for prioritization of transmission system projects by the electric utilities are discussed ... View full abstract»

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