Browsing Faculty of Engineering by Title

Now showing items 826-845 of 1731

  • GaN microwave power FET nonlinear modelling techniques 

    Brooks, Clive Raymond (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: The main focus of this thesis is to document the formulation, extraction and validation of nonlinear models for the on-wafer gallium nitride (GaN) high-electron mobility (HEMT) devices manufactured at ...

  • Generalised density function estimation using moments and the characteristic function 

    Esterhuizen, Gerhard (Stellenbosch : University of Stellenbosch, 2003-03)
    ENGLISH ABSTRACT: Probability density functions (PDFs) and cumulative distribution functions (CDFs) play a central role in statistical pattern recognition and verification systems. They allow observations that do not ...

  • A generic business model and management information system for quick ERP implementation in a project-driven SME 

    Van Eeden, Joubert (Stellenbosch : Stellenbosch University, 2002-12)
    ENGLISH ABSTRACT: A demand exists in SMEs to implement an ERP system to provide intime transaction and management information to the employees and management respectively. The reason for this study developed from problems ...

  • A generic, semi-empirical approach to the stochastic modelling of bath-type pyrometallurgical reactors 

    Eksteen, Jacobus Johannes; Reuter, M. A.; Bradshaw, S. M. (Stellenbosch : University of Stellenbosch, 2004-03)
    ENGLISH ABSTRACT: Bath type furnaces have become an established technology for the intensive smelting, converting and refining of primary and secondary raw materials. Since these furnaces normally have large inventories, ...

  • GPU acceleration of matrix-based methods in computational electromagnetics 

    Lezar, Evan (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: This work considers the acceleration of matrix-based computational electromagnetic (CEM) techniques using graphics processing units (GPUs). These massively parallel processors have gained much support ...

  • Grey water reclamation utilising solar thermal energy 

    Hartwig, Gerhard Rudolf (Stellenbosch : Stellenbosch University, 2013-12)
    ENGLISH ABSTRACT: The objective of this research was to obtain clean drinkable water from treated sewage effluent by using a solar-powered distillation cycle. Technologies and concepts were borrowed from the solar ...

  • Growth-based computer aided design strategies for multimode waveguide design with the aid of functional blocks 

    Vale, Christopher A. W. (Stellenbosch : Stellenbosch University, 2001-12)
    ENGLISH ABSTRACT: A new technique for the design of multimode devices in overmoded waveguide is presented. The technique applies the principle of growth-based design and uses a conceptual functional block representation ...

  • Guideline for a robust assessment of the potential savings from water conservation and water demand management 

    Wegelin, Willem Adriaan (Stellenbosch : Stellenbosch University, 2015-03)
    ENGLISH ABSTRACT: Water loss in water distribution systems has been studied for many years in many countries and is continuously leading to the development of new concepts and theories, publications, guidelines and ...

  • Handwritten signature verification : a hidden Markov model approach 

    Le Riche, Pierre (Pierre Jacques) (Stellenbosch : Stellenbosch University, 2000-12)
    ENGLISH ABSTRACT: Handwritten signature verification (HSV) is the process through which handwritten signatures are analysed in an attempt to determine whether the person who made the signature is who he claims to ...

  • Handwritten signature verification using hidden Markov models 

    Sindle, Colin (Stellenbosch : Stellenbosch University, 2003-12)
    ENGLISH ABSTRACT: Handwritten signatures are provided extensively to verify identity for all types of transactions and documents. However, they are very rarely actually verified. This is because of the high cost of ...

  • Harmonic interaction between weak AC systems and VSC-based HVDC schemes 

    Krige, Ernst (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: The implementation of the Caprivi Link Interconnector (CLI) High Voltage Direct Current (HVDC) scheme in 2010 connecting the weak Namibian and Zambian Alternating Current (AC) transmission networks via ...

  • Harmonic mixer analysis and design 

    Van der Merwe, Marius (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their output spectra ...

  • A health systems engineering approach to meeting the demand for skilled foetal ultrasound services in the Boland/Overberg public health district 

    Uys, Nina (Stellenbosch : Stellenbosch University, 2010-10)
    ENGLISH ABSTRACT: In its Millennium Development Goals, the United Nations prioritizes the improvement of maternal health in developing countries. The World Health Organization argues that this can be done through improving ...

  • Helicopter tail boom vibration analysis and suppression 

    Funnell, M. E. (Marc Edwin) (Stellenbosch : Stellenbosch University, 2002-04)
    ENGLISH ABSTRACT: An experimental investigation was conducted usmg a cantilever beam to illustrate an understanding of vibration techniques and phenomena. The [Tee and forced vibration of the cantilever beam was ...

  • A heliostat field control system 

    Malan, Karel Johan (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: The ability of concentrating solar power (CSP) to efficiently store large amounts of energy sets it apart from other renewable energy technologies. However, cost reduction and improved efficiency is ...

  • Heliostat field layout optimization for a central receiver 

    Lutchman, Shanley Lawrence (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: There are two methods generally used for heliostat field layout optimization: the field growth method and the pattern method. A third, less commonly used method also exists: the free variable method. ...

  • High accuracy numerical model of the SALT mirror support truss 

    De Lange, Billy (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Although a numerical model of the mirror support truss of the Southern African Large Telescope (SALT) has already been developed during the design thereof, this thesis focuses on the development of the ...

  • High power LDMOS L-band radar amplifiers 

    McIver, Stuart Roderick Arthur (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: The thesis details the design, construction and experimental evaluation of 30W, 35W and 250W L-Band LDMOS Radar amplifiers. Each amplifier module contains an integrated high speed power supply in order ...

  • High pressure fluid phase equilibria 

    Du Rand, Marlie (Stellenbosch : Stellenbosch University, 2000-12)
    ENGLISH ABSTRACT: Supercritical extraction is being investigated as a possible alternative to the processes currently used in the fractionation of paraffinic waxes. By removing the lighter carbon fractions from the wax, ...

  • High speed cutting and electric discharge machining as complementary processes in the die and mould industry 

    Treurnicht, N. F. (Stellenbosch : Stellenbosch University, 2003-04)
    ENGLISH ABSTRACT: High Speed Cutting (HSC), specifically milling is a significant contemporary development in machining. The Die and Mould industry is experiencing a difficult business climate. There is competitive ...