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Browsing Defence, peace, safety & security by Title

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  • Willers, MS; Willers, CJ (Society of Photo‑Optical Instrumentation Engineers (SPIE), 2012-09)
    This paper briefly analyses the broader framework of requirements for an imaging simulation system, in the 0.4 to 14 µm spectral bands. An existing imaging simulation system, OSSIM, is used to evaluate the identified key ...
  • Theron, B (2013-04)
    The purpose of the workshop was for participants to interactively discuss (with regard to optical imaging or optical imaging systems): Local end-user needs; What those needs imply for associated new & existing laboratory ...
  • Tekane, YC; Twala, B; Marwala, T (2015-01)
    We consider the problem of mapping with Miniature Aerial Vehicles (MAVs) in outdoor sites with distinguishable landscapes. The primary long range sensor in these MAVs is a miniature camera. While previous approaches first ...
  • Roux, FS (Elsevier, 2010)
    Stochastic (i.e. random and quasi-random) optical fields may contain distributions of optical vortices that are represented by non-uniform topological charge densities. Numerical simulations are used to investigate the ...
  • Duvenhage, A; Kourie, DG; Hancke, GP (2009-09)
    Modelling and simulation can be applied to support Joint Command and Control (JC2) which involves the interoperability of network-centric systems as well as legacy command and control systems. It is assumed that software ...
  • Pretorius, Arnu; Kroon, Steve; Kamper, Herman (2018-07)
    Denoising autoencoders (DAEs) have proven useful for unsupervised representation learning, but a thorough theoretical understanding is still lacking of how the input noise influences learning. Here we develop theory for ...
  • Van Heerden, Adelai; De Beer, Morris (2015-09)
    The aim of this mixed method study was to obtain a general profile of candidates (N=251) applying to join the Operational Forces of the South African National Defence Force in terms of their coping (hardiness, sense of ...
  • Tuling, S; Dala, L; Toomer, C (American Institute of Aeronautics and Astronautics, 2013-12)
    A numerical and experimental investigation was performed to study the dominant flow structures in the lee side of a cruciform wing–body configuration at supersonic speeds in the + orientation. The wings or strakes are of ...
  • Hugo, S; Naidoo, T; Swart, H; Potgieter, S; Van Rooyen, P; Land, K (SAIEE, 2011-09)
    Microscopy is widely accepted as one of the gold standards in disease diagnosis. However, factors such as cost and the need for a trained eye limit the potential usefulness of such equipment, particularly in resource-limited ...
  • Holtman, B (Pretoria News, 2007-11)
    Violent times do not call for violent measures but for pragmatic ones South Africans are in need of more compassion not hate.
  • Wessels, Konrad J (Blackwell Publishing Ltd, 2009-03)
    There is an urgent need for a quantitative, repeatable measure of land degradation and remote sensing provides the only viable option at a regional to global scale. It is therefore commendable that Bai et al. (2008) attempted ...
  • Grobler, MM (University of Johannesburg, 2009-10)
    The candidate's research investigated the development of a model for Live Forensic Acquisition - Liforac. The Liforac model is a wide-ranging model that presents many of the most important aspects related to Live Forensic ...
  • Duvenhage, B; Bouatouch, K; Kourie, DG (ACM Digital Library, 2014-09)
    This paper describes a new extension to light beam tracing that includes glossy multi-bounce transport paths for more realistic rendering of caustics. A spherical Gaussian approximation of the glossy scatter distribution ...
  • Du Preez, W (CSIR, 2010-08)
    This presentation starts of by discussing the drivers of the international titanium industry, followed by drivers of the South African titanium industry. The Titanium Centre of Competence is then analysed. The conclusion ...
  • Delport, JP (University of Pretoria, 2007-05)
    This dissertation describes the experiments performed and the techniques developed in order to identify network nodes and the connections between these nodes. The product of the investigation was the formulation of an ...
  • Lessing, M; von Solms, B (2008-09)
    The development of live forensic acquisition in general presents a remedy for some of the problems introduced by traditional forensic acquisition. However, this live forensic acquisition introduces a variety of additional ...
  • Fedotov, IA; Polyanin, AD; Shatalov, M; Tenkama, EM (Pleiades Publishing Ltd., 2010)
    In this work, for analyzing the longitudinal vibrations of a conic rod, the authors used the Rayleigh–Bishop model, which generalizes the Rayleigh model and takes into account both lateral displacements and the shear stress ...
  • Baumbach, J; Marais, Andre H; Gonçalves, DP (International Council on Systems Engineering South Africa, 2015-09)
    Despite the advances in mature engineering disciplines, some complex systems continue to fail, and sometimes catastrophically. The lack of understanding of a problem and all its constituting elements is a key determinant ...
  • Myburgh, HC; Olivier, JC (Institute of Electrical and Electronic Engineers (IEEE), 2009-05)
    This work proposes a near-optimal hard output neural network based iterative Maximum Likelihood Sequence Estimation (MLSE) equalizer, based on earlier work by the authors, able to equalize single carrier 4-QAM signals in ...
  • Myburgh, HC; Olivier, JC (Institute of Electrical and Electronics Engineering (IEEE), 2009-05)
    This work proposes a neural network based iterative Maximum Likelihood Sequence Estimation (MLSE) equalizer, able to equalize signals in M-arry Quadrature Amplitude Modulation (M-QAM) modulated systems in a mobile fading ...

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