Author:Holtzhausen, S; Matsebe, O; Tlale, NS; Bright, GDate:Nov 2008AUVs are ideal platforms for search and rescue operations. They can also be used for inspection of underwater terrains. These vehicles need to be autonomous and robust to cope with unpredictable current and high pressures. In this paper it ...Read more
Author:Holtzhausen, S; Matsebe, O; Tlale, NSDate:2008AUVs are ideal platforms for search and rescue operations. They can also be used for inspection of underwater terrains. These vehicles need to be autonomous and robust to cope with unpredictable current and high pressures. In this paper it ...Read more
Author:Edwards, ADate:Sep 2012This presentation outlines the importance of awareness training of managers at all levels and miners regarding the importance of hearing protection devices and adequate knowledge, motivation and training to prevent hearing loss.Read more
Author:Maina, JW; Ozawa, Y; Matsui, KDate:Jun 2009The importance of accounting for material nonlinearity and anisotropic behaviour in order to improve the resilient models for pavement materials and numerical analysis is presented in this paper. Effects of material inhomogeneity on the ...Read more
Author:Long, Craig S; Loveday, Philip W; Groenwold, AADate:Jan 2009Two new solid-of-revolution axisymmetric finite elements, which account for hoop fibre rotations, are introduced. The first is based on an irreducible formulation, with only displacement and rotation fields assumed independently. The second ...Read more
Author:Dudley, Angela L; Litvin, I; Roux, FS; Forbes, ADate:Jul 2012This presentation analyses the azimuthal decomposition of optical modes. Decomposition of azimuthal modes need two steps, namely generation and decomposition. An azimuthally-varying phase (bounded by a ring-slit) placed in the spatial frequency ...Read more
Author:Litvin, IA; Dudley, Angela L; Roux, FS; Forbes, ADate:May 2012We demonstrate a simple approach, using digital holograms, to perform a complete azimuthal decomposition of an optical field. Importantly, we use a set of basis functions that are not scale dependent so that unlike other methods, no knowledge ...Read more
Author:Zhang, Y; Roux, FS; McLaren, M; Forbes, ADate:Aug 2014Considering the quantum state produced in type I spontaneous parametric down-conversion with collinear, degenerate signal and idler beams, and a Gaussian pump, we show that the azimuthal Schmidt number in the Laguerre-Gaussian (LG) basis ...Read more
Author:Stewart, R; Donovan, SJ; Haarhoff, J; Brink, V; Vogt, DDate:Nov 2008Labour-intensive drill-and-blast mining, as conducted on the major South African gold and platinum mines, is often not tightly managed due to the lack of good information about what is going on underground. As a result, mining operations tend ...Read more
Author:Stewart, R; Donovan, SJ; Haarhoff, J; Vogt, DRDate:Aug 2008AziSA is an architecture for measurement and control networks that can be used to collect, store and facilitate the analysis of data from challenging underground environments. AziSA defines four node classes, two (Classes Four and Three) for ...Read more
Author:Vogt, D; Brink, AVZ; Stewart, R; Donovan, SJ; Haarhoff, JDate:Oct 2008South African underground hard rock mines are typically managed using measurements made daily, weekly or even monthly of key parameters face advance, readiness to blast, blast success, temperature or dust levels. Health, safety and productivity ...Read more
Author:Gumede, WHN; Van Zyl, PJ; Okole, B; Lalloo, RajeshDate:Feb 2006The decreased productivity levels in crop production as a consequence of disease infection have been a great concern amongst agricultural communities. A similar threat is facing the banana-cultivating community due to Panama disease. Panama ...Read more
Author:Osibanjo, O; Godfrey, Linda KDate:Jun 2018The Africa WMO provides the first comprehensive analysis of waste management on the African continent. It forms part of a series of regional waste management outlooks prepared by the United Nations Environment Programme (UNEP). These regional ...Read more
Author:Shapurjee, Y; Le Roux, Alize; Coetzee, MDate:May 2014This article examines the phenomenon of backyard housing in Gauteng, a prominent driver of urban spatial change in South Africa’s housing market. Backyard housing in South Africa increasingly attracts the attention of policymakers because of ...Read more
Author:Moodley, Sanchia S; Dlamini, Nomusa R; Steenkamp, Lucia H; Buys, Elna MDate:Nov 2019Spontaneous fermentation of motoho, a southern African non-alcoholic sorghum beverage, results in products with inconsistent microbiological and sensory quality. We aimed to identify the microorganisms involved in the fermentation of motoho ...Read more
Author:Ndlela, Luyanda L; Oberholster, Paul J; Van Wyk, JH; Cheng, Po Hsun HDate:Dec 2018Biological control of cyanobacteria is a well-researched area with a central focus on laboratory-scale studies. Numerous reports have been made on algicidal isolates, with bacteria as a major component of the antagonists. The research in this ...Read more