Browsing Faculty of Engineering by Title

Now showing items 2019-2038 of 2046

    • Waffle-iron filters with oblique boss patterns 

      Stander, T; Meyer, P; Van der Walt, P. W.; Steyn, W. (IEEE, 2012-09)
      A waffle-iron filter with an oblique boss pattern is proposed. A circuit model based synthesis method is developed to achieve control over the in-band reflection response. For equivalent filter orders, the boss pattern is ...

    • 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 resource infrastructure implications of a green economy transition in the Western Cape Province of South Africa: A system dynamics approach 

      Pienaar, Aliza Pauline (Stellenbosch : Stellenbosch University, 2016-03)
      ENGLISH ABSTRACT: For the Western Cape Province of South Africa to transition to a green economy, sustainable use of water resources is identified as a critical necessity. The green economy transition is seen as the most ...

    • 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 ...