Conference Proceedings. IEEE Canadian Conference on Electrical and Computer Engineering (Cat. No.98TH8341)

25-28 May 1998

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  • University And Industry - Partners In Success [front matter]

    Publication Year: 1998, Page(s):i - ix
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  • The exploitation of asymmetry in electric power transmission networks

    Publication Year: 1998, Page(s):485 - 488 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (493 KB)

    For more than a century electric networks have evolved on the basis of a three phase symmetrical equilibrium system. If the current and voltage distortion is seen as inevitable in the daily exploitation, the philosophy basically remains the same: the three phases are considered as a single symmetric ensemble. In high, very high and ultra high voltage (HV, VHV, and UHV) the appearance of a continge... View full abstract»

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  • Index [of authors]

    Publication Year: 1998, Page(s):1 - 5
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    Freely Available from IEEE
  • Modelling intelligent agents for information filtering

    Publication Year: 1998, Page(s):569 - 572 vol.2
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (332 KB)

    This paper presents a model of filtering agents for the search of information from heterogeneous sources. This model deals in particular with user requests and with source requests in the process of information filtering. Typically, a task of filtering is subdivided into sub-tasks, which are then executed by different agents; each endowed with a specific expertise. These agents are thus integrated... View full abstract»

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  • The recognition of facial expression based on fuzzy expert system

    Publication Year: 1998, Page(s):565 - 568 vol.2
    Cited by:  Papers (2)
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    An algorithm to recognize facial expression using a fuzzy expert system is presented. Computer simulation using 39 expressive facial images shows more than an 86.7% accuracy. From the experimental results, the prospects of using this method are very encouraging View full abstract»

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  • Architecture of a low cost spread spectrum wireless transceiver

    Publication Year: 1998, Page(s):613 - 616 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (356 KB)

    The paper presents the RF and IF architecture of a wireless transceiver. To simplify the modulation and demodulation processes a DPSK modulation scheme has been chosen. The demodulation is done from the IF frequency of 280 MHz. The paper presents the signal propagation analysis as well as the hardware implementations of several key components. Among these, we note the unbalanced to balanced circui... View full abstract»

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  • Fractal segmentation of signal from noise for radio transmitter fingerprinting

    Publication Year: 1998, Page(s):561 - 564 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (320 KB)

    This paper presents a study of segmentation between channel noise and turn-on transient for radio transmitter fingerprinting. The segmentation is based on a multifractal measure, which is called variance fractal dimension trajectory. Previous studies have shown that this multifractal measure is effective in nonstationary signal characterization. We employ two techniques for the variance fractal di... View full abstract»

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  • Multimedia courseware delivery over the Internet

    Publication Year: 1998, Page(s):609 - 612 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (512 KB)

    We discuss a multimedia interactive courseware rendering system developed at the Multimedia Information and Mobile Agent Research Lab, University of Ottawa. This system, which exploits the latest information technology such as Java applets, servlets, etc., provides a platform-independent learning environment. An interaction mechanism is also exploited to allow active participants in the learning p... View full abstract»

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  • An improved structured light technique for surface reconstruction of the human trunk

    Publication Year: 1998, Page(s):874 - 877 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (380 KB)

    A system using structured light and image-processing techniques for the measurement of three-dimensional surface of the human back is presented. The system can be applied to the measurement of scoliosis. The operation of the system including image-processing algorithms has been described View full abstract»

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  • A small die size image sensor with very low dark current

    Publication Year: 1998, Page(s):557 - 560 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (232 KB)

    A 150×150 pixel, single output, full-frame image sensor has been designed to fit a 5 mm package outline and to accommodate a wide range of frame rates. The 50 pA/cm2 dark current architecture allows 0.02-400 Hz frame rates. The HCCD dump architecture provides sub-frame rates exceeding 4000 Hz. Preliminary test results are presented. This sensor is well suited for in-situ medical a... View full abstract»

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  • Fuzzy logic based supplementary controller for static synchronous series compensator

    Publication Year: 1998, Page(s):489 - 492 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (364 KB)

    The static synchronous series compensator (SSSC) have been gaining a lot of consideration in power systems with respect to increase and control of power flow in transmission lines. In this paper, a fuzzy logic based supplementary controller has been designed for SSSC to improve power system dynamic performance. A signal based on transmission line current has been used as a supplementary signal to ... View full abstract»

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  • Designing and modeling a multimedia telelearning database

    Publication Year: 1998, Page(s):605 - 608 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (472 KB)

    At the Multimedia Information and Mobile Agent Research Lab. At the University of Ottawa, we have designed and developed a multimedia interactive telelearning system (MITS). It is entirely based on the object-oriented paradigm, new trends in multimedia computing and the utilization of advanced technologies. It aims at providing students with a seamless environment for facilitating education proces... View full abstract»

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  • A neural network approach for routing in computer networks

    Publication Year: 1998, Page(s):826 - 829 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (308 KB)

    This paper presents a new approach based on artificial neural networks to solve the routing problem in a context of computer network design. This approach is based on a network representation enabling one to match each network configuration with a Hopfield (1984) neural network in order to find the best path between any node pair by minimizing an energy function. It is suitable to be integrated in... View full abstract»

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  • FPGA implementation of the guided scrambling line coding technique

    Publication Year: 1998, Page(s):742 - 745 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (332 KB)

    The guided scrambling (GS) line coding technique was introduced by Fair, Grover, Krzymien, and MacDonald (1991) as a novel mechanism to ensure that binary transmitted sequences exhibit desirable line code characteristics. We describe a field programmable gate array (FPGA) implementation of GS. The system accommodates code words of up to 32 bits in length, with one or two augmenting bits per word. ... View full abstract»

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  • Plane wave scattering by two coalescing spheres

    Publication Year: 1998, Page(s):922 - 923 vol.2
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    This paper extends the classical problem of electromagnetic scattering of spherical conductors to the case of two coalescing spheres of different size. The incident field is a linearly polarized plane wave with arbitrary polarization angle γ and angle of incidence α. The scattered field is given in terms of multipole fields scattered from each sphere View full abstract»

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  • An implementation of a virtual reality interstitial brachytherapy system

    Publication Year: 1998, Page(s):870 - 873 vol.2
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (424 KB)

    This paper presents an implementation of a virtual reality (VR) interstitial brachytherapy system, and some results related to the accuracies associated with its use. Brachytherapy is a cancer treatment modality whereby applicators are inserted into the patient to act as channels to deliver radioactive sources to the diseased tissue. There are two major shortcomings associated with current brachyt... View full abstract»

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  • Distributed advanced search techniques for circuit partitioning

    Publication Year: 1998, Page(s):553 - 556 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (388 KB)

    Parallel and distributed computing systems offer the promise of a quantum leap in the computing power that can be brought to bear on many important problems. The potential for distributed processing exists whenever there are several computers interconnected in some fashion so that a program or procedure running on one machine can transfer control to a procedure running on another. In such an envir... View full abstract»

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  • Generating Gauss quadratures for Green's function 1/r: a randomized algorithm

    Publication Year: 1998, Page(s):657 - 660 vol.2
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (340 KB)

    We report a randomized scheme for generating Gauss quadratures for an exponential integral representation of the Green's function 1 /r. These Gauss quadratures form the basis of the exponential-expansion-based method, which has previously been developed for rapid and accurate evaluation of the potential field and its gradient in three dimensions. Given a desired degree of acc... View full abstract»

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  • Multifractal analysis of DNA

    Publication Year: 1998, Page(s):766 - 769 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (364 KB)

    This paper presents a multifractal analsyis technique for deoxyribonucleic acid (DNA). A brief overview of sequencing and multifractal measures is given along with multifractal spectrum data. Fractal characterization is shown to have high potential as a valuable tool in DNA analysis. Consideration is given to selecting the appropriate fractal measure, probability measure and operational parameters... View full abstract»

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  • Enhanced interactivity in a multimedia system over Internet

    Publication Year: 1998, Page(s):533 - 536 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (340 KB)

    This paper discusses the improved interactivity in a multimedia telelearning system over the Internet. Three levels of interactions are considered with the emphasis on the interaction between the end-user and the document. An interaction engine is designed to achieve the pre-defined interactions on this level. The techniques of the implementation on the interaction engine are presented View full abstract»

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  • Air traffic control trainer software development: multi-agent architecture and Java prototype

    Publication Year: 1998, Page(s):601 - 604 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (348 KB)

    This paper reports work on the development of a feedback system model for prototyping an air traffic control trainer (tATC). The feedback system itself represents a cleanroom engineering process designed as a closed loop containing decider, effector, and measure processes with reference values taken from a cleanroom plan and software engineering guide. The project-specific and atomic (task specifi... View full abstract»

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  • Detection of network infrastructure problems using artificial traffic

    Publication Year: 1998, Page(s):822 - 825 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (416 KB)

    This paper introduces the approach of monitoring the characteristics of artificial network traffic for detecting routing infrastructure pathologies. The experimental set-up used to develop some aspects of this approach is presented. It consists of several hosts connected to a medium size IP network. These hosts exchange special packets and monitor a selected set of characteristics of this traffic.... View full abstract»

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  • Effect of mobility on QoS in wireless communication networks

    Publication Year: 1998, Page(s):738 - 741 vol.2
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    The effect of mobility on QoS in wireless communication networks is investigated. A queueing model for analyzing capacity requirement and QoS performance at a generic cell is proposed and described. Numerical results for homogeneous traffic are discussed View full abstract»

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  • On the optimal number of hidden nodes in a neural network

    Publication Year: 1998, Page(s):918 - 921 vol.2
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (324 KB)

    In this study we show, empirically, that the best performance of a neural network occurs when the number of hidden nodes is equal to log(T), where T is the number of training samples. This value represents the optimal performance of the neural network as well as the optimal associated computational cost. We also show that the measure of entropy in the hidden layer not only gives a good foresight t... View full abstract»

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  • Adaptive connection admission control for mobile networks

    Publication Year: 1998, Page(s):898 - 901 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (340 KB)

    In this paper we propose a distributed adaptive connection admission control policy for mobile wireless networks. We first develop an analytical model that takes user mobility into consideration. We then use this model in our adaptive connection admission control (ACAC) policy. A simulation study has been conducted to test our policy along with another wireless connection admission policy. It has ... View full abstract»

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