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Browsing Defence, peace, safety & security by Title

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  • Strydom, JJ; Cilliers, Jacques E; Gouws, M; Naicker, D; Olivier, K (The Institution of Engineering and Technology (IET), 2012-10)
    This paper describes the development and testing of a digital radio frequency memory (DRFM) kernel, as well as some of the functionality which has been added to the system to make it a fully-fledged hardware in the loop ...
  • Strydom, JJ; Cilliers, Jacques E; McDonald, A; Olivier, K (2012-09)
    This presentation gives an overview of the testing and evaluation of seaborne search radars and the advances in DRFM technology.
  • Van der Watt, R; Erasmus, Louwrence (INCOSE, 2016-07)
    A public multi-disciplinary primary-level hospital delivers clinical services to both in and out patients within its catchment area. A multi-disciplinary hospital is a healthcare facility of which the commissioning or ...
  • Arhete, LE; Erasmus, Louwrence (International Association for Management of Technology (IAMOT) & the Graduate School of Technology Management, University of Pretoria, 2016-05)
    Despite the end of apartheid decades ago, the South African healthcare system continues to face significant challenges. Although efforts were made in the past to address the crisis, the system is said to be performing below ...
  • Cilliers, A; Nel, WAJ (IEEE, 2008-09)
    A technique based on time-frequency and tomographic analysis to extract helicopter blade parameters for the purposes of radar non-cooperative target recognition (NCTR) is investigated. The proposed algorithm shows that ...
  • Botha, RC; Strauss, HJ; Bollig, C; Koen, W; Collett, O; Kuleshov, NV; Esser, MJD; Combrinck, L; Von Bergmann, HM (Optical Society of America, 2013-03)
    A 1314 nm Nd:YLF laser was designed and operated both CW and passively Q-switched. Maximum CW output of 10.4 W resulted from 45.2 Wof incident pump power. Passive Q-switching was obtained by inserting a V:YAG saturable ...
  • Khutlang, Rethabile; Khanyile, Nontokozo P; Makinana, Sisanda; Nelwamondo, Fulufhelo V (IEEE, 2016-05)
    Biometric fingerprint scanners scan the external skin features onto a 2D image. The performance of the automatic fingerprint identification system suffers if the finger skin is wet, worn out, fake fingerprint is used et ...
  • Sharma, Ameeth (South African Institute of Physics (SAIP), 2016-07)
    Light based techniques continue to gain momentum in different spheres of diagnostic and therapeutic applications as a result of their non-invasive, noncontact properties. One such technique is Optical Coherence tomography ...
  • Sharma, Ameeth; Singh, Ann; Roberts, Ted; Ramokolo, Lesiba R; Strauss, Hencharl J (The South African Institute of Physics, 2016-07)
    Light-based techniques continue to gain momentum in different spheres of diagnostic and therapeutic applications due to their non-invasive, non-contact properties. One such technique is Optical Coherence tomography (OCT). ...
  • Kruger, OA (Bureau International des Poids et Mesures, 2001)
    The most commonly used method in the calibration of step gauges is the coordinate measuring machine (CMM), equipped with a laser interferometer for the highest accuracy. This paper describes a modification to a length-bar ...
  • Naidoo, K; Skews, BW (2010-09)
    Dynamic shock wave reflection generated by a rapidly pitching wedge in a steady supersonic free stream has been studied with numerical simulation previously. An experimental facility was developed for the investigation of ...
  • Malinga, L; Le Roux, WH (2009-07)
    The performance of three Run-Time Infrastructures (RTI) is measured. Two open source implementations (Portico version 0.8 and CERTI version 3.3.0) and one commercial implementation (MÄK version 3.2) have been subjected to ...
  • Strauss, HJ; Koen, W; Bollig, C; Esser, MJD; Jacobs, Cobus; Collett, OJP; Preussler, DR (Optical Society of America, 2011-07)
    A single-frequency single-pass amplifier based on Ho:YLF and Ho:LuLF in a scalable slab architecture delivering up to 210 mJ at 2064 nm is demonstrated. The amplifier was end-pumped by a 1890 nm Tm:YLF slab laser and was ...
  • Van Zyl, Louwrens H (2006-09)
    Flutter clearance is usually regarded as a two step process: flutter analysis (including ground vibration testing, aerodynamic analysis and equation of motion solution), and flutter flight testing. The problem with this ...
  • Naudé, B (2011-09)
    Arguments for a Network Centric Approach are considered in view of threat characteristics and a multitude of role-players within an international arena. The challenges to attain effective Command and Control are discussed ...
  • Landman, WA (SpringerOpen, 2014-06)
    The production of seasonal forecasts on a routine basis in South Africa started in the early 1990s. Most of the modelling then was based on linear statistical approaches. The subsequent evolution of the seasonal forecasting ...
  • Burke, I; Pieterse, H (2015-03)
    The Android mobile market has expanded greatly in recent years, but with its increased market share Android became a popular target for malware developers. The latest Anti-Virus reports suggest that Android account for the ...
  • Ssamula, B; Venter, C (2007-07)
    This paper analyses a study aimed at testing the cost effectiveness of designing a hub and spoke network (H&S network”) for Africa that allows airlines to reduce the costs of travel and increase connectivity. Various hub ...
  • Mowat, AGB; Malan, AG; Van Zyl, Louwrens H; Meyer, JP (2011-06)
    A fully-coupled partitioned fluid-structure interaction (FSI) scheme is developed for sub- and transonic aeroelastic structures undergoing non-linear displacements. The Euler equations, written in an Arbitrary Lagrangian ...
  • Broughton, BA; Selig, MS (American Inst of Aeronautics and Astronautics, 2006-11)
    A methodology for the inverse design of non-lifting axisymmetric bodies in compressible flow is presented. In this method, an inverse design approach based on conformal mapping is used to design a set of airfoils in ...

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