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25-28 March 1999

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Displaying Results 1 - 25 of 75
  • Proceedings IEEE Southeastcon'99. Technology on the Brink of 2000 (Cat. No.99CH36300)

    Publication Year: 1999
    Request permission for commercial reuse | PDF file iconPDF (427 KB)
    Freely Available from IEEE
  • Authors list

    Publication Year: 1999, Page(s):340 - 341
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    Freely Available from IEEE
  • Linear discriminant analysis for signal processing problems

    Publication Year: 1999, Page(s):78 - 81
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    Linear discriminant analysis (LDA) and principal components analysis (PCA) are two common techniques used for classification and dimensionality reduction. These techniques typically use a linear transformation which can either be implemented in a class-dependent or class-independent fashion. PCA is a feature classification technique in which the data in the input space is transformed to a feature ... View full abstract»

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  • In-system reprogrammable (ISR) units provide dynamic online automation and control

    Publication Year: 1999, Page(s):74 - 77
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    In modern control systems, there is a tremendous demand and requirement to implement the necessary control dynamically and also remotely. In addition, with the availability of the programmable devices such as complex programmable logic devices (CPLD) and field programmable gate arrays, it is now possible to design the systems with these type of devices and reprogram them online from remote locatio... View full abstract»

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  • Comparison of algorithms for detection of the number of signal sources

    Publication Year: 1999, Page(s):70 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    Some procedures for detection of the number of signal sources in presence of noise are compared. Two kinds of noise are considered. First, signals in the presence of Gaussian white noise under an additive model are examined. In this case, the problem is just to find the multiplicity of the smallest eigenvalue of the covariance matrix of the observation vector. Second, signals in presence of noise ... View full abstract»

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  • Interactive multimedia on the World Wide Web

    Publication Year: 1999, Page(s):110 - 115
    Cited by:  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    Multimedia on the World Wide Web refers to not only the text-based transfers, but in addition involves audio, and video. When a client makes a request to the server using the conventional HTTP (HyperText Transfer Protocol), the server responds by sending the requested document and terminates the established logical connection between the client and the server. The server does not maintain the stat... View full abstract»

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  • A programmable logic device based resolver simulator [for motor control]

    Publication Year: 1999, Page(s):159 - 164
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    In high-speed, high-performance motor control systems, a common motor shaft angular position sensor is a resolver. A circuit is described that simulates the behavior of a resolver attached to a rotating electrical machine turning at constant speed. The circuit simulates the resolver in the sense that it has the same outputs and utilizes the same inputs. The machine speed being simulated is program... View full abstract»

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  • A Unix-based speech data collection platform

    Publication Year: 1999, Page(s):29 - 31
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    It is highly desirable to collect speech data from the telephone network via a digital interface. This avoids an additional A/D conversion normally required by analog telephone data collection hardware. A popular solution to this problem is the use of a T1 line which offers 24 digital phone lines. The leading T1 interface for Sun workstations is a system developed by Linkon Corporation. Using the ... View full abstract»

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  • Design of a distance education system

    Publication Year: 1999, Page(s):128 - 133
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    The authors started with a simple set of requirements to design and implement a distance education system as part of a masters thesis. In this paper, they present the conceptual framework of their approach. Their initial requirements were as follows: the student should: (a) select department and the course; (b) see the information on any course selected; (c) login to enter a selected course; (d) l... View full abstract»

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  • Dynamic system control using slack descriptor models

    Publication Year: 1999, Page(s):67 - 69
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    Various techniques have been developed for controlling dynamic systems subject to model or input uncertainties. The slack descriptor systems model proposed by Holloway (1993) addresses such uncertainties as well as systems that have observation cost (uncertainty due to lack of samples). Here we consider some preliminary approaches to the control of systems modeled by slack descriptors, and show si... View full abstract»

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  • Security issues to tele-medicine system design

    Publication Year: 1999, Page(s):106 - 109
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    With the rapid development of the Internet and Internet based applications, tele-medicine can potentially provide important health care coverage for remote and rural areas where specialized medical expertise is lacking. Using Internet based tele-medicine application, the records and vital signs of patients in remote or rural areas can be made available to medical experts in major medical centers f... View full abstract»

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  • Delivery of an introduction Power Systems course

    Publication Year: 1999, Page(s):142 - 144
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    An introductory course in Power Systems was conceived at the University of North Florida (UNF) because power companies have power-generating plants in Jacksonville, the location of UNF. The course, Introduction to Power Systems is offered for the third year as an elective for students in the Systems Design track. In order to satisfy the design component requirement of the Accreditation Board for E... View full abstract»

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  • Extending the C++ language for hard real-time systems

    Publication Year: 1999, Page(s):53 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The design and development of a hard real-time application is often a difficult and time-consuming task. We present a description of the hard real-time C++ language (HRTC++) for real-time programming, which incorporates timing constraints consistent with the object-oriented concepts. The concepts of temporal abstract classes and virtual temporal constraints extend the inheritance mechanism of the ... View full abstract»

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  • Computation of effective permittivity of a 2-D periodic structure by T-matrix algorithm

    Publication Year: 1999, Page(s):329 - 332
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    We consider the scattering of a plane wave from a finite collection of two-dimensional dielectric scatterers that are arranged periodically in free space. The T-matrix algorithm is applied to solve for the scattered field. The effective permittivity of the collection is then computed using a minimization technique. Comparisons with the Polder-Van Santen (1946) mixing formula are made View full abstract»

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  • Scenic beauty estimation using independent component analysis and support vector machines

    Publication Year: 1999, Page(s):274 - 277
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    The objective in the scenic beauty estimation (SBE) problem is to develop an automatic classification algorithm that matches human subjective ratings. Algorithms such as principal components analysis (PCA) and decision trees (DT) have been applied to this problem with limited success, motivating our search for a better classifier. Since this is obviously a nonlinear classification problem, we appl... View full abstract»

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  • Portable speech recognition system for the hearing and speech impaired

    Publication Year: 1999, Page(s):25 - 28
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    This paper discusses the design and development of a portable, calculator size speech recognition system. The system is targeted primarily to enable the speech and hearing impaired to communicate via voice. However, many other related applications are possible for this device, particularly its potential for use in communications over phone lines View full abstract»

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  • A study of power factor and harmonics in switched-mode power supplies

    Publication Year: 1999, Page(s):278 - 283
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    Power factor and harmonic characteristics of high frequency switched-mode power supply systems operating in discontinuous inductor current mode are studied in this paper. The study is based on the fact that virtually all power factor correction (PFC) converters use a few basic converter topologies as their input stages. It is found that these converters present distinctive harmonic behaviors. Harm... View full abstract»

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  • Application of Mie theory to large particle

    Publication Year: 1999, Page(s):237 - 241
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Mie theory has been applied to large particles of size one to 50 microns in diameter. Our results indicate: 1. The angular dependent part of the scattering coefficient is relatively constant over the small angles between 0-10 degrees. Thus we expect a small variation in the intensity of the scattered photons. 2. The amplitude dependent parts of the scattering coefficients which are functions of pa... View full abstract»

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  • Congestion prevention technique for ATM networks

    Publication Year: 1999, Page(s):86 - 91
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    ATM networks do not operate in an effective and stable way without preventing congestion. Traffic management is concerned with the design of mechanisms which ensure that the network bandwidth, buffer and resources are efficiently utilized, while meeting the various quality of service (QoS) guarantees given to sources as part of a traffic contract. In this paper, a new and improved congestion contr... View full abstract»

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  • Interactive Web-based tutorials for engineering education

    Publication Year: 1999, Page(s):126 - 127
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    The RAISE (Remote Asynchronous Instruction in Science and Engineering) program at the University of Louisville provides online support for classes. One feature of RAISE is the interactive tutorial. Each tutorial is a series of HTML documents that includes JavaScript to allow for response to student input. A typical tutorial poses a problem to the student, then helps the student solve the problem b... View full abstract»

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  • Feedback on a ball balancer

    Publication Year: 1999, Page(s):64 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (116 KB)

    The open loop transfer function of a ball balancer shows it to be unstable. Application of a feedback loop is required to stabilize it. This paper provides a practical touch to the undergraduate linear control systems course, where compensation is commonly and theoretically applied in various control systems to achieve stability and in which no practical insight is provided as to what constitutes ... View full abstract»

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  • Determination of midband gain of Sallen-key filters

    Publication Year: 1999, Page(s):305 - 308
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    This article discusses the definition and evaluation of midband gain for active filters with positive feedback and two widely separated poles. It is shown that two different definitions yield two different frequency responses. These responses differ by a factor of 0.04 db. The results of analytical expressions are checked with simulation. Agreement is excellent View full abstract»

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  • Performance evaluation of the latest high speed LAN adapters: 100 Mbps token ring; Gbps Ethernet

    Publication Year: 1999, Page(s):98 - 101
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    We present TCP/IP throughputs and processor utilizations (both send and receive) obtained for the latest high speed LAN adapter technologies-100 Mbps token ring (with 100 Mbps Ethernet discussed, for comparison) and Gbps (Gigabit) Ethernet-for Microsoft Windows operating systems. Included is a discussion of the factors that influence observed performance, as well as methods for noninvasively measu... View full abstract»

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  • Extending ESPRIT algorithm by using virtual array and Moore-Penrose general inverse techniques

    Publication Year: 1999, Page(s):315 - 318
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    High-resolution signal parameter estimation is frequently studied in many signal processing applications. In this paper, we present a new high-resolution direction and frequency simultaneous estimation algorithm, which extends the ESPRIT algorithm by using the Moore-Penrose general inverse and virtual array techniques. By using this new algorithm, the parameter pair (θi,f... View full abstract»

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  • Reduced order modeling of thin wire scatterers

    Publication Year: 1999, Page(s):323 - 328
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    We present an efficient method of calculating the scattered electric field from thin wires for broadband solutions. The method is based on the method of moments and adapts techniques from asymptotic waveform evaluation. It is found that for applications which require a large number of frequencies be evaluated, the method produces very accurate results with considerable savings in computation time View full abstract»

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