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IEEE WESCANEX 97 Communications, Power and Computing. Conference Proceedings

22-23 May 1997

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  • 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 (5)
    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
  • 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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  • A classical approach in modelling the air-core transformer

    Publication Year: 1997, Page(s):344 - 349
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    In this paper, a specially designed air-core power transformer, to be employed in a small power tapping scheme from HVDC transmission systems, is studied. First, the transformer is analyzed by classical electromagnetic theory. Next, a small prototype transformer is built and studied in the laboratory. Experimental results, confirm the validity and accuracy of the proposed method for calculating th... View full abstract»

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  • Object oriented top-down software design process

    Publication Year: 1997, Page(s):76 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1396 KB)

    Progress in software engineering theory often does not change the situation of software designers who in most cases are faced with the problem of defining their own methodology for software development. There are a few attempts to introduce formal methods for software development. One of those attempts and probably the most successful one is the object oriented approach which provides designers wi... View full abstract»

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  • Design of a parallel genetic algorithm for the Internet

    Publication Year: 1997, Page(s):333 - 343
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1028 KB)

    This paper proposes a parallel implementation of the genetic algorithm (GA) on the Internet which will improve the algorithm's performance. It is motivated by the possibility of aiding research into complex search and optimization problems that use the GA. Requirements and constraints regarding parallelization of the GA are identified. A parallel GA is developed for an ideal PRAM architecture and ... 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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  • Web applets for interactive tutorials on artificial neural learning

    Publication Year: 1997, Page(s):19 - 23
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    The paper describes the development of JavaTM Web applets for tutorials on artificial neural learning. First, the artificial neuron applet simulates the structure and behaviour of an artificial neuron. Second, the perceptron learning applet demonstrates a simple form of supervised learning known as the perceptron learning algorithm. These applets exploit the benefits of Java to provide ... View full abstract»

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  • Localized electrochemical plating of interconnectors for microelectronics

    Publication Year: 1997, Page(s):327 - 332
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    This work demonstrates the electrodeposition of micrometer scale copper structures including columns and interconnectors. Copper interconnectors of 25 μm width were grown within an integrated circuit package using a simple instrument based on the scanning electrochemical microscope. In the present instrument electrodeposition is localized by applying a voltage between a closely spaced glass ins... 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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  • ATM data classification with an artificial neural network

    Publication Year: 1997, Page(s):276 - 279
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    The ability to classify different data types in real time has many potential applications. Implemented in a switching element, data recognized to be time sensitive, such as voice, could be given higher priority or other special handling. Using competitive learning, it is possible to train a network to distinguish between audio, video and FTP data without an external supervisor. Unprocessed audio, ... View full abstract»

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  • Fonetix-speech articulation and hearing perception software

    Publication Year: 1997, Page(s):153 - 156
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    For human speech perception, audio-visual interaction is prominent. Fonetix is a multimedia software kit for the Web being developed for improving speech and hearing perception. The initial phase involved the development or modification of existing systems to accommodate interactive repositories of audio and video. This included the display of animated midsagittal views of the vocal tract in real-... View full abstract»

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  • Internet telephony compression algorithms

    Publication Year: 1997, Page(s):13 - 18
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    Internet telephony is the technology that allows for the transmission of digitized voice signals over the lnternet. The Internet telephony market has exploded since March of 1995 and continues to grow with the distribution of Internet telephone applications via the two leading Web browsers; Netscape Navigator and Internet Explorer. The technology needs to be studied in order to determine the effec... View full abstract»

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  • Near field focusing of apertures and reflector antennas

    Publication Year: 1997, Page(s):246 - 251
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Large aperture antennas such as reflectors are commonly used for far-field communications. In these applications the aperture field is uniformly illuminated in phase by a feed antenna, and the radiated beam focuses at infinity. In this study we consider focusing the antenna to a point on its axis near the aperture. Interesting results are obtained for the focused location and its spot size, which ... View full abstract»

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  • 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 (3)
    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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  • Experiments with wavelet and other edge detection techniques

    Publication Year: 1997, Page(s):322 - 326
    Cited by:  Papers (4)
    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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  • 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 (6)
    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 progressive numerical method for depressing the internal resonances of scattering problems

    Publication Year: 1997, Page(s):258 - 262
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    The method of moments (MoM) produces spurious results while calculating electromagnetic scattering at the internal resonance frequencies on infinite conducting cylinders. A progressive numerical method provides an efficient way to deal with this situation. It solves the integral equations progressively for many selected sub-regions of the surface instead of the whole object. A concept of overlappi... View full abstract»

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  • Practical considerations in applying economical dispatch models to combined cycle cogeneration plants

    Publication Year: 1997, Page(s):59 - 63
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    An economical dispatch model has been expanded to include combined cycle cogeneration plants, which comprise steam turbine generators. The extended model was simplified into a spread sheet exercise. Both models are examined against practical considerations in running combined cycle cogeneration plants View full abstract»

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  • Generating traffic distributions for ATM networks: a cellular automaton implementation

    Publication Year: 1997, Page(s):270 - 275
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    ATM networks are designed for the transmission of a wide variety of applications, each having different traffic characteristics. A cellular automaton (CA) can effectively generate random patterns which have good randomness characteristics. This paper makes the first step to use 1-D LHCA (one-dimensional linear hybrid CA) to generate random traffic distributions for ATM networks View full abstract»

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  • Fuzzy preprocessing of gold standards as applied to a neural network classifier of magnetic resonance spectra

    Publication Year: 1997, Page(s):150 - 152
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    Culling diagnostic information from biomedical spectra is often exasperated by an imperfect or imprecise gold standard. A fuzzy set theoretic preprocessing method is described that reduces the classification error rate by enhancing a gold standard through the incorporation of nonsubjective within-group centroid information. Magnetic resonance spectra of human brain neoplasms were used to determine... View full abstract»

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  • Simulation of HVDC wall bushing performance under unevenly wetted conditions

    Publication Year: 1997, Page(s):109 - 113
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The electric field distributions for HVDC wall bushings with different dry zone lengths are discussed and their critical flashover voltages predicted using an E-field based model. The simulation yields results in good agreement with experimental results. It is shown that some important aspects of wall bushing flashover, such as the U-shaped characteristics of critical flashover voltage versus dry ... View full abstract»

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