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WESCANEX 97: Communications, Power and Computing. Conference Proceedings., IEEE

Date 22-23 May 1997

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Displaying Results 1 - 25 of 64
  • IEEE WESCANEX 97 Communications, Power and Computing. Conference Proceedings

    Publication Year: 1997
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    Freely Available from IEEE
  • Composite generation and transmission system adequacy assessment with time varying loads using a contingency enumeration approach

    Publication Year: 1997, Page(s):41 - 46
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (607 KB)

    Adequacy evaluation of composite generation and transmission system can be performed in a variety of ways. In general, these techniques can be categorized as being either a Monte Carlo simulation approach or based on a contingency selection/evaluation procedure. This paper illustrates the development of an annual chronological load curve for each load bus in a composite generation and transmission... View full abstract»

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  • List of authors

    Publication Year: 1997, Page(s):350 - 351
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    Freely Available from IEEE
  • Effect of wind turbine parameters on the capacity adequacy of generating systems using wind energy

    Publication Year: 1997, Page(s):47 - 52
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    The production of electricity by a wind turbine at a specific site depends on many factors. These factors include the wind speed conditions at the site and the characteristics of the wind turbine generator (WTG) itself, particularly the cut-in, rated and cut-out wind speed parameters. There are many different types of wind turbines commercially available on the market. It is therefore desirable to... View full abstract»

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  • Reliability assessment of an electric power system using a reliability network equivalent approach

    Publication Year: 1997, Page(s):53 - 58
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Reliability evaluation of an entire power system provides a set of indices which a system planner can use to balance the investments in different segments of the system in order to provide acceptable load point reliability. Evaluating an entire power system as a single entity is a difficult task. This paper presents a network reliability equivalent technique for evaluating the reliability of an en... View full abstract»

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  • Hardware implementation of neural network controlled optimal PWM inverter using TMS320C30 board

    Publication Year: 1997, Page(s):168 - 173
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    An optimal PWM scheme is used to control a voltage source inverter. The switching angles are controlled by a feedforward artificial neural network in a way that all nontriplen harmonics up to the 29th are completely removed from the output and the amplitude of the fundamental is set at the desired level. The neural network is emulated by a TMS320C30 DSP board along with the other parts ... View full abstract»

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  • Multifractal characterization of Laplacian fractals

    Publication Year: 1997, Page(s):114 - 120
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    This paper presents a multifractal approach to characterizing, or fingerprinting, the structural complexity of similar-looking, yet different, discharge trees caused by dielectric breakdown. Multifractal characterization of Laplacian fractals involves the computation of a spectrum of fractal dimensions, providing much more information than is possible from just a single fractal dimension. This all... View full abstract»

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  • A technology management methodology implemented using expert systems

    Publication Year: 1997, Page(s):70 - 75
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    Management of technology concerns the processes of managing technology development through research and development, and managing the introduction and use of technology. Expert systems are computer programs that encode knowledge about a problem into a knowledge base, and then use this knowledge to reason and draw conclusions about a particular problem or situation. Currently, expert systems are be... View full abstract»

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  • Phase measurements using direct conversion AM radio navigation

    Publication Year: 1997, Page(s):280 - 285
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    This paper presents a number of approaches for precision navigation using AM broadcasts and analog phase measurement techniques. By mixing signals down to a low intermediate frequency (IF) and locking on with a phase lock loop (PLL), phase differences can be measured with ±0.5° accuracy. This provides ±0.32 meters range accuracy with a 1300 kHz AM radio signal View full abstract»

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  • Multifractal wavelet compression of fingerprints

    Publication Year: 1997, Page(s):313 - 321
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1400 KB)

    This paper presents compression of grey-scale fingerprint images, using a wavelet transform guided by a multifractal measure to obtain the best reconstructed image in terms of a higher peak signal to noise ratio, PSNR, at the lowest bit rate. The fingerprint images and the corresponding wavelet coefficients are considered to be approximation of strange attractors and can be analyzed by their multi... View full abstract»

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  • Very low bit rate video coding for visual communications

    Publication Year: 1997, Page(s):24 - 29
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    This paper reviews the developments in very low bit rate coding of video for visual communication, with emphasis on the transmission of facial images. In this context, model-based coding (MBC) has received considerable attention, and has shown to be a promising approach for coding of video below 64 kb/s. A survey of emerging approaches with respect to different object models, ranging from regional... View full abstract»

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  • Enhanced IEEE system life cycle: a reactive real-time systems development model

    Publication Year: 1997, Page(s):88 - 93
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The main contribution of the article is the presentation of enhancements to the IEEE hardware/software system life cycle model in the development of reactive, real time embedded systems. In addition, the enhanced life cycle model incorporates a collection of adaptive fuzzy clocks, one for each stage of the life cycle to monitor expected and actual durations. The model also monitors degrees of Cemp... View full abstract»

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  • Modeling and simulation of a hybrid-engine

    Publication Year: 1997, Page(s):286 - 291
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    A fundamental mathematical model is required to describe the dynamic motion of the hybrid-engine. Based on the mathematical model, simulation programs have been developed These programs are used to predict the operation of the motor/generator and to develop a control strategy. The simulation results are included. Two structures for the hybrid-engine have been considered. One uses a single cylinder... View full abstract»

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  • Numerical convergences of infinite periodic patch arrays using subdomain basis functions

    Publication Year: 1997, Page(s):252 - 257
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    Infinite periodic arrays of conductive rectangular patches are analyzed in terms of their surface current distributions and various reflection properties using modal formulations involving Floquet's theorem. Proper boundary conditions are enforced to obtain an eigenvalue equation by way of Galerkin's method. In this analysis, numerical convergences of the roof-top subdomain basis functions are com... View full abstract»

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  • Real time power system security and control

    Publication Year: 1997, Page(s):64 - 69
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    In this paper, a “real time power system security and control system” which combines energy margin evaluations with simulations on the University of British Columbia's real-time power system simulator, as well as with fuzzy logic techniques for the decision making process is presented. The energy-based algorithm is called the “Expanded Two-Machine equivalent System”. The en... View full abstract»

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  • Experiments with wavelet and other edge detection techniques

    Publication Year: 1997, Page(s):322 - 326
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    This paper discusses experimental work with a wavelet edge detection technique for still images. A brief overview of wavelets and other methods for edge detection is given along with images comparing the results. Several different image classes are examined and processed. Two test images are discussed in order to determine the properties of the system. An experimental image is used to obtain insig... View full abstract»

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  • Array near field focusing

    Publication Year: 1997, Page(s):242 - 245
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    Antenna arrays are normally characterized in terms of their far field radiation patterns, beam width and directive gain. However, for some applications the array is focused in the near field. The focus size is determined in terms of the near field properties of the array. The focusing is done through adjusting the phase of the elements of the array. The simulations are done using the method of mom... View full abstract»

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  • Annotated reference list agents

    Publication Year: 1997, Page(s):7 - 12
    Cited by:  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    The agents described in the article were used to create a system which does most of the creation, addition, and maintenance of an annotated reference list page. This system has been used to maintain a telecommunications Web page for the last two years. The strength of this system is that it automatically locates a large number of potential links which may be included in the Web page, and uses a fa... View full abstract»

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  • Performance evaluation of a new transmission line directional module using field data

    Publication Year: 1997, Page(s):197 - 201
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    This paper presents a neural network-based technique to identify the direction of a fault on a power transmission line. A novel network using a subset of voltage and current information as its inputs is presented. The network uses samples of voltage and current signals to learn the hidden relationship existing in the input patterns. The network performance is tested with real world fault data. Per... View full abstract»

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  • Design and testing of a fuzzy logic based seeding depth control system

    Publication Year: 1997, Page(s):263 - 269
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    The control system in this research utilizes a microprocessor-based fuzzy logic control process in combination with a novel seeding depth gauge system. The fuzzy algorithm is modelled upon expert human control by means of linguistic variables that describe the error between the measured seeding depth and the desired depth set point. Three scenarios were examined: a 3-membership function, a 5-membe... View full abstract»

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  • Moment invariants for image analysis with applications to image reconstruction

    Publication Year: 1997, Page(s):157 - 162
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    We address a detailed analysis of the accuracy of Zernike moment computing in terms of its discretization error. This is explained by relating the accuracy issue to the analytic number theory problem, the lattice points of a circle. The image reconstruction power of Zernike moments is also discussed View full abstract»

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  • An efficient method for the design and analysis of microstrip circuits and antennas

    Publication Year: 1997, Page(s):233 - 237
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    An efficient numerical method is investigated and implemented to obtain the design characteristics of microstrip structures. This technique requires derivation of a mixed potential integral equation solution in terms of vector and scalar potentials of the dyadic Green's function. The extraction of Green's function through Sommerfeld integral equations is avoided by implementing instead the simplif... View full abstract»

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  • Multimedia courseware for an introductory analog electronics course

    Publication Year: 1997, Page(s):228 - 232
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The power of animation and video capture and the ability to precisely define multimedia courseware adds a new dimension to course content. This combined with interactive modules and the ability to view and review material anywhere, provides a very powerful new form of course delivery. An important limitation is the vast amount of work required to generate the multimedia content. It is estimated th... View full abstract»

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  • Hu's moment invariants: how invariant are they under skew and perspective transformations?

    Publication Year: 1997, Page(s):292 - 295
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    Hu's (1962) moment invariants are used in pattern recognition to provide a scale, orientation and position invariant characterization of the shape of a given object. In practical situations, objects may undergo other types of deformations, most commonly skew and perspective distortions. This paper explores the behaviour of Hu's invariants under these distortions View full abstract»

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  • A benchmark for artificial intelligence applications on parallel computers-BEAP

    Publication Year: 1997, Page(s):82 - 87
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    Production or rule based systems hold an important place within the field of artificial intelligence (AI). In present times production systems are facing a bottleneck regarding speeding up of their processing. The use of parallel computers has been advocated as one of the most appropriate technologies for this speedup. In this direction, attempts have been made and more will follow. These attempts... View full abstract»

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