Author:Sibiya, G; Venter, HS; Fogwill, TDate:May 2015The advent of cloud computing has brought new challenges to digital forensics. To address these challenges, new approaches in conducting digital forensic are required. In this paper, challenges that are faced by digital forensic investigator ...Read more
Author:Ngejane, Hombakazi C; Eloff, JHP; Sefara, Tshephisho J; Marivate, VNDate:Mar 2021Chat-logs are informative digital footprints available on Social Media Platforms (SMPs). With the rise of cybercrimes targeting children, chat-logs can be used to discover and flag harmful behaviour for the attention of law enforcement units. ...Read more
Author:Litvin, Igor A; Collet, Oliver JPDate:Mar 2015We 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 the analytical formula ...Read more
Author:Iyawa, GE; Herselman, Martha E; Botha, AdèleDate:Oct 2016This paper reviews existing literature on digital health innovation ecosystems. It aims to explore the terms digital health, innovation and digital ecosystems to identify components towards presenting a conceptual framework for a digital ...Read more
Author:Iyawa, GE; Herselman, Martha E; Botha, AdèleDate:Feb 2019The purpose of this paper was to identify key participants who will participate in transactions carried out in the ecosystem for the Namibian context. This is to identify and describe specific professionals as well as their role in the ...Read more
Author:Mhlanga, T; Trichili, A; Dudley, Angela L; Naidoo, Darryl; Zghal, M; Forbes, ADate:02 Oct 2014High-capacity data transmission has been implemented using single channel optical systems. This technique
is limited and soon it will be unable to ful ll the growing needs for higher bit rate data transmission. Hence
multi-mode transmission ...Read more
Author:Phelp, DDate:Nov 2008This paper describes a low cost video system ‘Harbour Watch’, which can be used to support safe port operations, especially in developing countries. Preset digital images are geo-referenced and then archived for later analysis to improve ...Read more
Author:Phelp, David; Tulsi, KishanDate:May 2006Advances in digital image technology has allowed us to use accurate, but relatively cost effective technology to measure a number of varied activities in physical models. The capturing and manipulation of high resolution digital images can ...Read more
Author:Olukanmi, S; Nelwamondo, Fulufhelo VDate:Aug 2020Influenza (flu) epidemics remain a public health concern around the world. Conventional disease surveillance systems are slow and resource intensive, since they rely on data from medical practitioners. To address these issues, recent research ...Read more
Author:Herselman, PLR; Cilliers, Jacques EDate:Sep 2007In modern information and sensor systems, the timely estimation of the carrier frequency of received signals is of critical importance. This paper presents a digital instantaneous frequency measurement (DIFM) technique, which can measure the ...Read more
Author:Herselman, PL; Cilliers, Jacques EDate:27 Feb 2006This paper presents the Digital Instantaneous Frequency Measurement (DIFM) technique, which can measure the carrier frequency of a received waveform within a fraction of a microsecond. The resulting frequency range, resolution and accuracy ...Read more
Author:Bell, Lebohang T; Kgomo, Mosima B; Ngcobo, SandileDate:May 2020In this article, we demonstrate selective excitation of second harmonic higher-order modes inside a diode end-pumped solid-state laser resonator that comprises of a nonlinear potassium titanyl phosphate (KTP) crystal and a digitally addressed ...Read more
Author:Ngcobo, Sandile; Litvin, I; Burger, L; Forbes, ADate:Aug 2013Customizing the output beam shape from a laser invariably involves specialized optical elements in the form of apertures, diffractive optics and free-form mirrors. Such optics require considerable design and fabrication effort and suffer from ...Read more
Author:Bell, Teboho; Ngcobo, SandileDate:Jul 2016In this paper we demonstrate the output power amplification of the generated higher-order modes from a digital laser by using an extra-cavity Nd: YAG amplifier.Read more
Author:Forbes, A; Ngcobo, Sandile; Burger, L; Litvin, IADate:Feb 2014In this paper we will outline our recent advances in all-digital control of light. Importantly, we will outline how to create
a so-called “digital laser”, where a conventional laser mirror is replaced with a phase-only spatial light modulator. ...Read more
Author:Botha, Adèle; Ford, MDate:Oct 2008Technology has changed the world we live in and has come to be both villified and acclaimed, often for the same reasons. Whilst mobile phones in particular, have tremendous potential as knowledge exchange devices in the developing world due ...Read more
Author:Burger, L; Litvin, I; Forbes, ADate:Jul 2012We describe the performance of twisted nematic liquid crystal (TNLC) spatial light modulators (SLMs) when used for intracavity beam shaping.Read more
Author:van Biljon, J; Marais, Mario A; Platz, MDate:May 2017Research involving the use of information and communication technology for development (ICT4D) inhabits an interdisciplinary space characterized by various philosophies, aspirations, realities and priorities. This diversity in the ICT4D ...Read more
Author:Marsden, G; Ladeira, I; Reitmaier, T; Bidwell, NJ; Blake, EDate:Sep 2010In this paper the authors examine how digital technology can be used to inspire, record and present oral stories in an African context. In particular they explore how to create technologies that are sympathetic to the cultures of the storytellers, ...Read more