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Safety and security

 

Recent Submissions

  • Sroor, H; Lisa, Nyameko; Naidoo, Darryl; Litvin, Ihar; Forbes, A (American Physical Society, 2018-04)
    Creating high-quality vector vortex (VV) beams is possible with a myriad of techniques at low power, and while a few studies have produced such beams at high power, none have considered the impact of amplification on the ...
  • Sroor, H; Naidoo, Darryl; Courtial, J; Forbes, A (SPIE, 2018-02)
    Mathematical self-similar fractals manifest identical replicated patterns at every scale. Recently, fractals have found their way into a myriad of applications. In optics, it has been shown that manipulation of unstable ...
  • Naidoo, Darryl; Litvin, Ihar; Forbes, A (SPIE, 2017-02)
    We investigate the selection of a flat-top beam and a Gaussian beam inside a laser cavity on opposing mirrors. The concept is tested external to the laser cavity in a single pass and double pass regime where the latter ...
  • Naidoo, Darryl; Litvin, Ihar; Forbes, A (Optical Society of America, 2018-07)
    Laser brightness is a measure of the ability to deliver intense light to a target and encapsulates both the energy content and the beam quality. High-brightness lasers require that both parameters be maximized, yet standard ...
  • Litvin, Ihar; King, Gary R (IOP Publishing, 2018-08)
    We propose the technique for a controllable manipulation of the transverse intensity distribution of an output beam by the temporal adjustment of a transverse gain profile in a laser amplifier. It was created by an independent ...
  • Litvin, Igor A; Collet, Oliver JP (Optical Society of America, 2015-03)
    We propose a new technique for laser beam shaping namely the reshaping of the laser beam into a desirable beam profile by the use of a laser amplifier with a pump beam that has a modified intensity profile. We developed ...
  • Jiba, Zetu; Sono, Tleyane Jonas; Mostert, Frederik Johannes (Elsevier, 2018-10)
    The effects of a fine water mist environment in a semi-confined blast chamber on the chemical and thermodynamic processes following detonation of a 20 g PE4 explosive charge have been investigated. The effects were quantified ...
  • Gcaza, Noluxolo (Lulu Press, 2018-08)
    Information and communication technologies (ICTs) are responsible for the transformation of societies, nations and the world at large. ICTs are considered to improve the quality of life for citizens as they bring about ...
  • Ntshangase, Cynthia S; Shabalala, Meshack B (Encryption using finger-code generated from fingerprints, 2018-03)
    In this paper, the literature survey of different algorithms for generating encryption keys using fingerprints is presented. The focus is on fingerprint features called minutiae points where fingerprint ridges end or ...
  • Pieterse, Heloise; Olivier, M; Van Heerden, Renier P (Elsevier, 2018-03)
    Ever improving smartphone technology, along with the widespread use of the devices to accomplish daily tasks, leads to the collection of rich sources of smartphone data. Smartphone data are, however, susceptible to change ...
  • Veerasamy, Namosha; Labuschagne, William A (IGI, 2018-04)
    This article describes how social media has revolutionised the way in which people communicate, interact and engage. This phenomenon has transformed the digital world with its ease, convenience and numerous capabilities ...
  • Eddy, C; de Saxe, Christopher C; Cebon, D (Camera-based measurement of cyclist motion, 2018-08)
    Heavy Goods Vehicles (HGVs) are overrepresented in cyclist fatality statistics in the UK relative to their proportion of total traffic volume. In particular, the statistics highlight a problem for vehicles turning left ...
  • Meissner, Richard; Steyn, Maronel; Jacobs-Mata, Inga M; Moyo, Elliot S; Shadung, Justinus M; Sekoane, Zandile W; Nohayi, Ngowenani (Elsevier, 2018-09)
    South Africa is one of the 40 driest countries in the world with an annual average rainfall of less than 500 millimetres. In addition, South Africa's rate of economic development is closely linked to its level of water ...
  • Jansen van Vuuren, Joey; Leenen, Louise (Academic Conferences and Publishing International Ltd, 2018-03)
    Cyber Defence is a core driver in the attainment of national security for any country. Perceived Cyberpower can be determined by the analysis of the elements of cyberspace as part of national security. In this paper the ...
  • Leenen, Louise; Aschman, MJ; Grobler, MM; Van Heerden, Adelai (Academic Conferences and Publishing International Ltd, 2018-03)
    Cyber as an operational domain is widely recognised by military forces, but the process to operationalise cyber poses a number of challenges. One of the difficulties is that traditional military culture is far removed from ...
  • Turpin, SM; Cooper, Antony K (1998-11)
    Recently, the CSIR has been involved in two projects investigating information technology (IT) and related processes in the civil and criminal justice systems, one with the Department of Justice focusing on civil justice, ...
  • Meissner, Richard; Funke, Nicola S; Nortje, Karen; Jacobs-Mata, Inga M; Moyo, Elliot S; Steyn, Maronel; Shadung, Justinus M; Masangane, Winile; Nohayi, Ngowenani (Elsevier, 2018-05)
    As one of the 40 driest countries in the world with an annual average rainfall of 497 mm, South Africa is a water-scarce country. Additionally, South Africa’s rate of economic development is closely linked to its water ...
  • 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). ...
  • Lück-Vogel, Melanie (EE Publishers, 2018-04)
    This article provides guidance to technical and non-technical coastal practitioner regarding the required precision of airborne lidar data for the typical coastal applications, output formats and value-added products. It ...
  • Ledwaba, Lehlogonolo PI; Hancke, GP; Venter, HS; Isaac, Sherrin J (IEEE, 2017-11)
    In past years, cryptography has been considered a difficult task to achieve on sensor nodes for the Internet of Energy (IoE) owing to the resource-constrained nature of 8-bit and 16-bit microcontroller units (MCUs). Previous ...

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