Author:Matyila, M; Botha, Adèle; Alberts, R; Sibiya, GDate:May 2014Mobile services and mobile content is available to diverse users in possession of the necessary mobile phones. However, some of the mobile services and mobile content is text intensive and this discounts low literate users in participation ...Read more
Author:De Saxe, Christopher; Cebon, DDate:Nov 2016Application of articulated and Long Combination Vehicles (LCVs) in challenging off-highway applications is possible with the use of path-following trailer steering. This requires an accurate estimate of trailer off-tracking, but it has been ...Read more
Author:Smith, Andrew CDate:Feb 2009Good visual perception skills are important in the effective manipulation of Tangible User Interfaces. This paper reports on the application of a test set researchers have developed specifically to quantify the visual perception skills of ...Read more
Author:Naidoo, T; Joubert, D; Chiwewe, T; Tyatyantsi, A; Rancati, B; Mbizeni, ADate:Mar 2014Road distresses, such as potholes and edge cracks, are not only a source of frustration to drivers but also negatively impact the economy due to damage to motor vehicles and costly road repairs. Regular and rapid pavement inspection and ...Read more
Author:Thomas, A; Gerber, AJ; Van der Merwe, ADate:Nov 2015Diagrams are often studied as visual languages with an abstract and a concrete syntax (concrete syntax is often referred to as visual syntax), where the latter contains the visual representations of the concepts in the former. A formal ...Read more
Author:De Saxe, C; Cebon, DDate:Sep 2015Active control systems for heavy goods vehicles (HGVs) are becoming more sophisticated, necessitating more extensive and sophisticated instrumentation. For articulated HGVs, articulation angle sensing is crucial for most such systems and ...Read more
Author:Roux, FSDate:Feb 2014Optical vortices are always created or annihilated in pairs with opposite topological charges. However, the presence of such a vortex dipole does not directly indicate whether they are associated with a creation or an annihilation event. Here ...Read more
Author:Roux, FSDate:Feb 2014This presentation discusses the vitality of optical vortices to distinguish between vortex dipole creation and annihilation events. Vitality is expressed in terms of the transverse 1st and 2nd order derivatives of the optical field. It can ...Read more
Author:Barnard, E; Schalkwyk, J; Van Heerden, C; Moreno, PJDate:Sep 2010In light of the serious problems with both illiteracy and information access in the developing world, there is a widespread belief that speech technology can play a significant role in improving the quality of life of developing-world citizens. ...Read more
Author:Sharma Grover, AS; Calteaux, Karen V; Barnard, E; Van Huyssteen, GDate:Mar 2012Research using voice-based services as a technology platform for providing information access and services within developing world regions has shown much promise. The results for design and deployment of such voice-based services have varied ...Read more
Author:Greben, HA; Baloyi, LJ; Eisberg, R; Joubert, LM; Botha, A; Venter, SNDate:May 2006Acid Mine Drainage (AMD) needs to be treated, before it is recharged in rivers and dams. The biological treatment of AMD can be applied using degradation products of cellulose, for example Volatile Fatty Acids as carbon sources. The aim of ...Read more
Author:Cooper, Antony K; Coetzee, S; Kourie, DGDate:2018The terms user-generated content, volunteered geographical information, crowdsourcing, citizen science and neogeography are elucidated. The purpose is to expose the range of meanings associated with these terms, and to promote consensus as ...Read more
Author:Sephton, Bereneice C; Dudley, Angela L; Forbes, ADate:Oct 2016Q-plates are commonly used for uncomplicated generation of polarization controlled vortex beams. Here we show experimentally that the output is not a pure vortex but rather a Hypergeometric-Gaussian mode. Results are in good agreement with theory.Read more
Author:Roux, FSDate:2009The report present the presentation on vortices in Gaussian beams. The presentation was on the polynomial Gaussian beam, Calculation techniques and general properties of polynomial Gaussian beam, Single vortex beams and Gaussian beams with ...Read more
Author:Purdon, Kyla; Dickens, John S; De Ronde, Willis; Ramruthan, Kshir; Crafford, GerrieDate:Nov 2023This paper describes a mobile ground-based robotic platform named Voyager which was developed to support robotics research and replace the old mobile robotic platform, the Pioneer. A comparative analysis was done with three mobile robot: ...Read more
Author:Purdon, Kyla; Dickens, John S; De Ronde, Willis; Ramruthan, Kshir; Crafford, GerrieDate:Nov 2023This paper describes a mobile ground-based robotic platform named Voyager which was developed to support robotics research and replace the old mobile robotic platform, the Pioneer. A comparative analysis was done with three mobile robot: ...Read more
Author:John, J; Binedell, M; Matooane, M; Oosthuizen, RDate:28 Feb 2006South Africa hosts a number of different communities, both in terms of wealth and access to environmental and social services. Poor communities located in close proximity to industrial developments are of particular concern to the risk assessor ...Read more
Author:Mpalane, Kealeboga; Gasela, N; Esiefarienrhe, BM; Tsague, HDDate:Sep 2016A wide variety of cryptographic embedded devices including smartcards, ASICs and FPGAs must be secure against breaking in. However, these devices are vulnerable to side channel attacks. A side channel attack uses physical attributes such as ...Read more
Author:Matooane, M; John, J; Oosthuizen, RDate:30 Aug 2010This presentation does a vulnerability assessment regarding air pollution. It investigates the topic by providing a scope of the issue, discussing the approach that was used, assessing vulnerability and communicating outcomes, and looking at ...Read more
Author:John, J; Matooane, M; Oosthuizen, R; Wright, CDate:Nov 2008The Environmental Health Research Group has, amongst other interests, a specific focus on understanding and addressing vulnerability of communities to environmental pollution. No appropriate tools to determine vulnerability to environmental ...Read more