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  • Jansen van Rensburg, Gerhardus J; Kok, S (SAAM, 2012-12)
    Since plasticity is path dependent, it is necessary to properly take into account the deformation, strain rate and temperature history in applications such as crash worthiness and ballistics simulations. To accurately model ...
  • Leigh, L; Helder, D; Behnert, I; Deadman, A; Fox, N; Leloglu, UM; Özen, H; Griffith, D (IEEE IGARSS 2011, 2011-07)
    The Tuz Gölü site does demonstrate some challenges for being used as an absolute calibration site. These include: spatial and temporal variability on the order of +/- 0.02, atmospheric transmittance variability on the order ...
  • Ramoroka, MT; Masonta, Moshe T; Kliks, A (Springer, 2015-12)
    The role of cheap and easy access to various telecommunication facilities is crucial for further community development. Such an observation is of particular importance for the developing countries all over the world since ...
  • Masonta, Moshe T; Lysko, Albert A; Mekuria, Fisseha (2012-10)
    In wireless communication networks, radio frequency spectrum is the most important and very expensive resource. The TV digital switchover (DSO) will leave a large portion of the TV frequency bands unused, known as TV ...
  • Louis, DK; Hanson, I; Masonta, Moshe T (IST- Africa, 2016-05)
    This paper introduces the Ghana Technology University College (GTUC) television white space (TVWS) network deployed in Accra, Ghana. The network, which is still work-in-progress, provides Internet connectivity to six Senior ...
  • Mfupe, Luzango P; Mzyece, M; Mekuria, Fisseha (2012-05)
    Television White Spaces (TVWS) coupled with Dynamic Spectrum Access and Cognitive Radio (DSA-CR) technologies are increasingly viewed as key enablers to the bridging of the digital divide in rural areas. However, in order ...
  • Lamola, MM; Johnson, David; Lysko, Albert A; Zlobisnky, Natasha (http://www.satnac.org.za, 2016-09)
    Dynamic Spectrum Access (DSA) plays a vital role in opportunistic access to spectrum. A key component of DSA is preventing interference to the incumbent (primary) user from the secondary user. We present the results of an ...
  • Forbes, A; Dudley, Angela L; Roux, S (EE Publishers, 2010-12)
    Research at the Mathematical Optics Group uses "twisted" light to study new quatum-based information security systems. In order to understand the structure of "twisted" light, it is useful to start with an ordinary light ...
  • Botha, G; Barnard, E (PRASA, 2005-11)
    Many applications of pattern recognition to natural language processing require large text corpora in a specified language. For many of the languages of the world, such corpora are not readily available, but significant ...
  • Ntshotsho, P (CSIR, 2015-10)
    Ntshotsho and her colleagues sought to verify and characterise success in government’s efforts to restore degraded ecosystems through invasive alien plant management. Invasive alien plants pose a significant threat to South ...
  • Grobler, AJ; Holm, SR; Van Schoor, G (Institute of Electrical and Electronics Engineers, 2015-11)
    (PMSMs) are well suited for high-speed (HS) applications due to their high efficiency, power density, and dynamic response capability. The heat extraction area decreases as the speed increases, making thermal effects more ...
  • Shou, KJ; Napier, JAL (Pergamon-Elsevier Science Ltd, 1999-09)
    A new displacement discontinuity method is developed for the analysis of multi-layered elastic media. This approach is based on a novel superposition scheme and the analytical solution to the problem of a displacement ...
  • Smit GJF; Wilms JM; Diedericks GPJ (Elsevier Publishers, 2010-11)
    Models that are used for the simulation of two-phase flows in coastal dynamics make extensive use of empirical data. The main focus of this investigation is to develop models for specific aspects of two-phase flows that ...
  • Nabarro, FRN (Elsevier Science Ltd, 2000-09)
    The structure and properties of two families of lattice-coherent composites, those based on gamma' Ni3Al and those based on TiA/Ti3Al, are shown to have strong similarities. The coherent system of cubic/tetragonal ...
  • McLaren, M; Romero, J; Padgett, MJ; Roux, FS; Forbes, A (American Physical Society, 2013-09)
    In this paper we consider geometrical two-photon optics of Bessel-Gaussian modes generated in spontaneous parametric down-conversion of a Gaussian pump beam. We provide a general theoretical expression for the orbital ...
  • Stewart, TJ; Ittmann, HW (Palgrave Macmillan, 1979)
    A study of the economic distribution of maize throughout South Africa is reported. Although the problem of minimizing total transportation costs in such a situation is a classical one, and its solution is well known, there ...
  • Fernandes, PJL (Peramon-Elsevier Science Ltd, 1998-03)
    This article discusses the outcome of an investigation of the failure of copper tubes from cold water distribution system carrying potable water in a shopping centre. Samples of copper tubes from a cold water distribution ...
  • De Beer, Morris; Sadzik, EM; Fisher, C; Coetzee, CH (2005-07)
    This paper addresses the measurement (i.e. “fingerprinting”) of tyre loading and contact stress patterns associated with slow moving test tyres on the new Heavy Vehicle Simulator (HVS Mk IV+) of Gautrans. The two test tyres ...
  • De Beer, Morris; Fisher, C; Kannemeyer, L (2004-09)
    The aim of this paper is to highlight the use of SIM (Stress-In-Motion) technology on typical heavy vehicles found at the N3-TCC (Traffic Control Centre), with illustrative examples on real world trucks on this highway. A ...
  • von der Heyden, BP; Hauser, EJ; Mishra, B; Martinez, GA; Bowie, AR; Tyliszczak, T; Mtshali, Thato N; Roychoudhury, AN; Myneni, SBC (American Chemical Society, 2014-08)
    Despite being thermodynamically less stable, small ferrous colloids (60 nm to 3 µm in diameter) remain an important component of the biogeochemical cycle at the Earth’s surface, yet their composition and structure and the ...

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