Author:Grodner, MDate:Sep 2001The depth of mining in the gold mines of the Witwatersrand Basin, South Africa is continuously increasing, with several mines already stopping at depths exceeding 3500m. Due to the high stresses imposed on the rock mass in these deep level ...Read more
Author:Ampofo-Anti, NaalamkaiDate:Jul 2017This paper presents a project delivery model developed for use by public sector clients tasked with using innovative building technologies (IBTs) in lieu of conventional building technologies (CBTs) in the delivery of social infrastructure projects.Read more
Author:Wall, KDate:Feb 2006There is a great need for institutional innovations aimed at improving access to basic water services in South Africa, and sustaining that improvement. In support of effective delivery, the CSIR, with the support of the Water Research Commission, ...Read more
Author:Netshiluvhi, TRDate:Dec 1999Short-listing of medicinal tree species for propagation was done through three criteria; number of bags sold, price per bag and mean scarcity value. There is a strong correlation between the mean scarcity values and number of bags sold per ...Read more
Author:Ashton, PJDate:Jun 2010The water quality of almost all of South Africa’s river systems has worsened progressively as a result of increasing urbanization and industrialization; the adverse effects of poor water quality have been compounded by the operation of water ...Read more
Author:Lamprecht, TJ; Venter, CJ; Badenhorst, WDate:Nov 2005The paper describes a method for the modelling of demographic and economic change at a spatially disaggregate level that is compatible with the requirements of a conventional transport model. The method was developed and tested in the City ...Read more
Author:Naidoo, Darryl; Mafusire, C; Forbes, ADate:Jul 2009An optical aberration is a distortion of an image as compared to the object due to defects in an optical systemRead more
Author:Wall, K; Ive, O; Bhagwan, J; Kirwan, F; Birkholtz, W; Lupuwana, N; Shaylor, EDate:Aug 2013Having viewed the successful social franchising partnerships pilot programme that serviced sanitation facilities at 400 schools in the Butterworth District of the Eastern Cape of South Africa, the Amathole District Municipality (ADM) expressed ...Read more
Author:Wall, K; Ive, O; Bhagwan, J; Kirwan, F; Birkholtz, W; Lupuwana, N; Shaylor, EDate:Oct 2012Having viewed the successful social franchising partnerships pilot programme that serviced sanitation facilities at 400 schools in the Butterworth District of the Eastern Cape, the Amathole District Municipality (ADM) expressed interest in ...Read more
Author:Esser, MJD; Collett, O; Bollig, CDate:Oct 2010The authors present a continuous-wave slab laser utilising both Ho:YLF and Ho:LuLF as laser gain media. 30 W of output power at 2 µm was demonstrated in a stable concave-plane resonator while 13 W was achieved in a hybrid stable-unstable ...Read more
Author:Gray, IDate:Jan 2003This report contains a description of the stress measurement process and the results of
the stress measurements at Goedehoop. The results of the stress measurements show a very low horizontal stress regime but one in which the stresses are ...Read more
Author:Van Doornum, GAWDate:1973A knowledge of the density is required for the evaluation of air-flow measurements involving orifice plates. pitot tubes and similar equipment.Read more
Author:Van der Walt, Christiaan M; Barnard, EDate:Nov 2009The authors propose a hyper-ellipsoid clustering algorithm that grows clusters from local structures in a dataset and estimates the underlying geometrical structure of data with a set of hyper-ellipsoids. The clusters are used to estimate a ...Read more
Author:Pillay, KDate:Oct 2017This presentation discusses cybersecurity operations as well as the cybersecurity hub implemented and used by the South African Department of Telecommunications and Postal Services.Read more
Author:Mhlongo, Gugu H; Dhlamini, MS; Swart, HC; Ntwaeaborwa, OM; Hillie, KTDate:Aug 2011Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphor powders with different concentrations of Eu3+ ions were synthesized by a sol–gel method and their luminescence properties were investigated. The red photoluminescence (PL) from Eu3+ ions with the main ...Read more
Author:Mvelase, PS; Dlodlo, N; Sithole, Happy M; Adigun, MDate:Dec 2015Research and commercial efforts are currently addressing challenges and providing solutions in cloud computing. Business models are emerging to address different use scenarios of cloud computing. In this paper, we present a virtual enterprise ...Read more
Author:Mamushiane, Lusani; Lysko, Albert A; Kobo, Hlabishi I; Mwangama, JDate:Aug 2023Field trials and experimentation are crucial for accelerating the adoption of standalone (SA) 5G in Africa. Traditionally, only network operators and vendors had the opportunity for practical experimentation due to proprietary systems and ...Read more
Author:Olakanmi, EO; Tlotleng, Monnamme; Meacock, C; Pityana, Sisa L; Doyoyo, MDate:Jun 2013Surface treatment is one of the most costly processes for treating metallic components against corrosion. Laser-assisted cold spray (LACS) has an opportunity to decrease those costs particularly in transportation systems, chemical industries, ...Read more