Browsing Faculty of Engineering by Title

Now showing items 1713-1732 of 1737

  • Warm mix asphalt vs. hot mix asphalt : flexural stiffness and fatigue life evaluation 

    Van den Heever, Johann (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: The UNFCCC (United Nations Framework Convention on Climate Change), enabled by the Kyoto Protocol, set enforced responsibilities on industrialised countries to reduce the amount of emissions (greenhouse ...

  • Water demand of selected residential properties with access to groundwater in serviced areas of the Cape Peninsula 

    Wright, Tiaan (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: This study focuses on the water demand of selected residential properties with access to groundwater in serviced areas of the Cape Peninsula. This winter rainfall region is typified by hot and dry summer ...

  • A Water Flow Meter for Smart Metering Applications 

    Muller, Regardt I; Booysen, Marthinus J. (South African Conference on Computational and Applied Mechanics - SACAM, 2014-01)
    The availability and depletion of natural resources is increasingly punted as the limiting factor for sustainability. A lot of focus, especially in drought-stricken countries, is placed on water conservation. One way to ...

  • Water quality information system for integrated water resource management 

    Tukker, Mary Jean (Stellenbosch : Stellenbosch University, 2000-12)
    ENGLISH ABSTRACT: The processes of monitoring, modelling and managing the water quality of a catchmerit system including all its unique complexities and interrelationships requires an innovative tool or set of tools to ...

  • Water scarcity and electricity generation in South Africa 

    Wassung, Natalie (Stellenbosch : University of Stellenbosch, 2010-12)
    ENGLISH ABSTRACT: South Africa has a mean annual precipitation far lower than the global average. This is a fundamental constraint to development, especially when the country has already run out of surplus water and ...

  • Waveguide antenna feed for the Square Kilometre Array 

    Schoeman, Karla (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: The aim of this thesis is to investigate the suitability of TEM (Transverse Electromagnetic) horn antennas for use as feed structures for the Square Kilometre Array (SKA) radio telescope, in particular with ...

  • Wavelet-based speech enhancement : a statistical approach 

    Harmse, Wynand (Stellenbosch : University of Stellenbosch, 2004-12)
    ENGLISH ABSTRACT: Speech enhancement is the process of removing background noise from speech signals. The equivalent process for images is known as image denoising. While the Fourier transform is widely used for speech ...

  • Wear characterisation in milling of Ti6Al4V : a wear map approach 

    Oosthuizen, Gert Adriaan (Stellenbosch : University of Stellenbosch, 2010-12)
    ENGLISH ABSTRACT: Information on the milling of Ti6Al4V is limited; with most studies concluding that it is not possible to obtain a significant increase in the material removal rate (Qw). Tool wear maps can be a diagnostic ...

  • A whistle-stop tour of automatic speech recognition 

    Niesler, Thomas (Stellenbosch : Stellenbosch University, 2013-11)
    Thomas Niesler’s academic career began at the University of Stellenbosch where he obtained the BEng and MEng degrees in Electronic Engineering in 1991 and 1993 respectively. He moved to St John’s College, Cambridge, in ...

  • Whole-body vibration comfort measurement aboard the S. A. Agulhas II and just noticeable difference threshold testing in the laboratory 

    McMahon, Kim J. (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: A continuous comfort analysis of the whole-body vibration level aboard the S.A. Agulhas II during the 2013-2014 Antarctic voyage was conducted ac- cording BS ISO 2631-1:1997, assuming a standing posture. ...

  • Why pursue research projects in an academic environment 

    Gorgens, Johann F. (Stellenbosch : Stellenbosch University, 2013-09)
    The pursuit of academic research is internationally considered to be a key deliverable of academic careers, with ever-increasing expectations of demonstrated research capacity and outputs as a means to substantiate ...

  • Wide band, low-noise amplifiers for the mid-range SKA 

    Botes, Dewald Alewyn (Stellenbosch : Stellenbosch University, 2015-03)
    ENGLISH ABSTRACT: This thesis presents the design, construction and measurement of two wide-band LNA’s for the SKA-Mid range (350-1200 MHz). The first wide-band LNA involves the investigation of classic low noise amplifier ...

  • Wide-band modelling of an air-core power transformer winding 

    Van Jaarsveld, Barend Jacobus (Stellenbosch : Stellenbosch University, 2013-12)
    ENGLISH ABSTRACT: The objective of this project is to develop an electromagnetic model that can be used to accurately calculate the voltage distribution in a transformer winding structure when excited with standard impulse ...

  • Wideband coaxial cable transfer impedance for Karroo Array Telescope 

    Andriambeloson, Joely Andrianina (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Through the Karoo Array Telescope, and its extension MeerKAT, South Africa is demonstrating its capabilities to host the most powerful radio telescope ever, the Square Kilometre Array (SKA). This new ...

  • Wideband modelling of capacitive voltage sensors for open-air transmission line applications 

    Schilder, Melanie (Stellenbosch : Stellenbosch University, 2002-12)
    ENGLISH ABSTRACT: This dissertation considers the wideband modelling of capacitive voltage sensors for open-air transmission line applications. Two novel topologies were introduced, namely a differential parallel plate ...

  • A wideband monopole antenna design 

    Lourens, Jako (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: The successful operation of a man-pack VHF jamming system requires a compact and efficient antenna operating over a wide bandwidth. The design of such an antenna is the focus of this thesis. The antenna ...

  • A wideband signal conditioning system for high voltage measurements using a transconductance topology 

    Agjee, F. M. D. E. (Faatima, Moosa, Dawood, Ebrahim) (Stellenbosch : Stellenbosch University, 2000-03)
    ENGLISH ABSTRACT: Recent research has shown that standard substation capacitive voltage transformers (CVTs) and current transformers (CTs) can be used for the measurement of wideband high voltage phenomena by employing ...

  • Wind climatology of South Africa relevant to the design of the built environment 

    Kruger, Andries Coenrad (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: In South Africa, wind constitutes the most critical environmental loading affecting the design of the built environment. The wind climatic information, which is currently incorporated in structural ...

  • Wind-electric pump system design 

    Lemmer, Edward Charles (Stellenbosch : University of Stellenbosch, 2009-03)
    The aim of this study is to analyse the operation of a wind-electric pumping system (WEPS) as an alternative to conventional mechanical wind pumps for application in stand-alone water-pumping schemes. The steady-state as ...

  • Wireless physiological monitoring system for psychiatric patients 

    Rademeyer, A. J. (Stellenbosch : Stellenbosch University, 2008-12)
    This thesis is concerned with the development and testing of a non-invasive device that is unassailable, and can be placed on an aggressive psychiatric patient to monitor the vital signs of this patient. Two devices, a ...