• Rapid calculation of antenna noise temperature in offset Gregorian reflector systems 

      De Villiers, Dirk I. L.; Lehmensiek, Robert (Institute of Electrical and Electronics Engineers, 2015)
      Antenna noise temperature calculations of reflector systems is often a slow process and makes direct optimization of the sensitivity of these systems a difficult and time consuming task. This paper presents an improvement ...
    • Reconsidering the advantages of the three-dimensional representation of the interferometric transform for imaging with non-coplanar baselines and wide fields of view 

      Smith, D. M. P.; Young, A.; Davidson, D. B. (EDP Sciences, 2017)
      Radio telescopes with baselines that span thousands of kilometres and with fields of view that span tens of degrees have been recently deployed, such as the Low Frequency Array, and are currently being developed, such as ...
    • The relevance of Intelligent Transport Systems (ITS) in sub-sub-Saharan Africa 

      Booysen, Marthinus J. (Development Bank of Southern Africa, 2013-07)
      Countries like the United States, Japan, and a number of countries in Europe, have led the way in a field that has become known as Intelligent Transportation Systems. The term broadly describes any intelligent intervention ...
    • Remotely controllable wireless road stud network 

      Le Roux, J. H.; Barnard, A.; Booysen, Marthinus J. (IEEE -- Institute of Electrical and Electronics Engineers, 2013-10)
      Developing countries face many infrastructure related challenges, one of them being road safety. This paper proposes a novel system introducing a network of wirelessly connected road studs that are remotely controllable ...
    • Ripple compensation for a class-D amplifier 

      Cox, Stephen M.; Mouton, H. du Toit (Society for Industrial and Applied Mathematics, 2015)
      ENGLISH ABSTRACT: This paper presents the first detailed mathematical analysis of the ripple compensation technique for reducing audio distortion in a class-D amplifier with negative feedback. The amplifier converts a ...
    • Simple capacitive seat sensing for occupancy detection and passenger counting in minibus taxis 

      Zeeman, Adriaan Siebrits; Booysen, Marthinus J. (Southern African Transport Conference, 2014-07)
      The informal public transportation sector in Sub-Saharan Africa contributes significantly to public transport, and yet little is known about passenger mobility patterns. We propose a low cost system to measure occupancy ...
    • A single-element plane-wave solid-state laser rate equation model 

      Bernhardi, E. H.; Bollig, C.; Esser, M. J. D.; Forbes, A.; Botha, L. R.; Jacobs, C. (Academy of Science of South Africa, 2008)
      A numerical rate equation model has been developed to describe the dynamics of a solid-state laser during continuous wave or Q-switched operation. The model allows the optimization of parameters such as the output coupler ...
    • SUNSAT: Suid-Afrika se eerste satelliet in die ruimte 

      Schoonwinkel, A.; Milne, G. W.; Du Plessis, J.; Mostert, S. (AOSIS Publishing, 2002-09-28)
      AFRIKAANSE OPSOMMING: Die SUNSAT-satelliet is as navorsing- en ontwikkelingsprogram aan die Universiteit van Stellenbosch bedryf van 1992 tot 2001. Dit het nuwe tegnologie vir Suid-Afrika verwerf en internasionaal ’n nuwe ...
    • Survey of Media Access Control (MAC) protocols for Vehicular Ad hoc NETworks (VANETs) 

      Booysen, Marthinus J.; Zeadally, Sherali; Van Rooyen, Gert-Jan (The Institution of Engineering and Technology (IET), 2011-07)
      Recent advances of various wireless communication technologies and the emergence of computationally rich vehicles are pushing Vehicular Ad-hoc NETwork (VANET) research to the forefront in academia and industry. A lot of ...
    • Temporal case study of household behavioural response to Cape Town's Day Zero using smart meter data 

      Booysen, M. J.; Visser, M.; Burger, R. (Elsevier, 2018-11-13)
      ENGLISH ABSTRACT: Faced with the threat of "Day Zero", when it was feared that Cape Town's taps could run dry, consumers reduced household water usage from 540 to 280 litres per household per day over the 36 months ...
    • Virtual reality assisted microscopy data visualization and colocalization analysis 

      Theart, Rensu P.; Loos, Ben; Niesler, Thomas R. (BioMed Central, 2017-02-15)
      Background: Confocal microscopes deliver detailed three-dimensional data and are instrumental in biological analysis and research. Usually, this three-dimensional data is rendered as a projection onto a two-dimensional ...
    • ZnO nanowire gas sensor with UV-light for improved sensitivity 

      Van den Heever, T. S.; Hardie, G. L.; Perold, W. J. (SciDoc Publishers, 2013-04)
      ZnO nanowires are synthesised on a patterned substrate in order to see the response to different gases. Under ambient conditions the sensor shows very little response to any gas. A UV-light source is used to increase the ...