Author:Dickens, JS; Green, JJDate:Nov 2011A pedestrian detection system for underground mine vehicles is being developed that requires the segmentation of people from thermal images in underground mine tunnels. A number of thresholding techniques are outlined and their performance ...Read more
Author:Van der Merwe, JMDate:1954A segregation and breakage test was carried out on pea-duff coal and the results are summarized in the present report.Read more
Author:Manzi, MSD; Hein, KAA; Durrheim, R; King, NDate:Nov 2013The gold-bearing Upper Elsburg Reef clastic wedge (UER) in the South Deep gold mine in the Witwatersrand basin (South Africa) hosts the highly auriferous basal conglomerate known as the Elsburg Conglomerate (EC) reef. The reef is less than ...Read more
Author:Mavonga, T; Durrheim, RJDate:Sep 2009A probabilistic approach was used to assess the seismic hazard in Democratic Republic of Congo and surrounding areas. Seismic hazard maps were prepared using a 90-year catalogue compiled for homogeneous Ms magnitudes; the attenuation relations ...Read more
Author:Sileny, J; Milev, ADate:Aug 2006Seismic records contain information about the effect of the source as well as the effect of wave propagation through the rock mass. The effect of wave propagation is usually not well known as only simplified models of geological structures ...Read more
Author:Malephane, H; Durrheim, RJ; Andreoli, MAGDate:Oct 2013The Namaqualand-Bushmanland region has numerous features that make it attractive for the storage of radioactive waste. In the late 1970s a programme to find a suitable site for low- and intermediate-level waste was launched and Vaalputs was ...Read more
Author:Goldbach, ODDate:Sep 2009Many South African gold mines will flood when they close, as the groundwater will gradually fill the mining voids. Preliminary investigations have shown that flooding of mines can generate increased levels of seismicity. Examples are given ...Read more
Author:Wright, C; Walls, EJ; De J Carneiro, DDate:Jul 2000Analysis of the refracted arrivals on a seismic reflection profile recorded along the wall of a tunnel at an iron mine near Thabazimbi, South Africa, shows variations in P-wave velocity in dolomite away from the de-stressed zone that vary ...Read more
Author:De Beer, WDate:Feb 2000This final report on the SIMRAC project GAP409 presents a method (SOOTHSAY) for predicting larger mining induced seismic events in gold mines, as well as a pattern
recognition algorithm (INDICATOR) for characterising the seismic response of ...Read more
Author:Ntombela, C; Masangane, W; Funke, Nicola S; Nortje, KarenDate:Sep 2013The aim of the workshop was to reinforce, at the strategic decision-making level within the municipality, the significance of properly managed wastewater treatment facilities towards improved water quality.Read more
Author:Van Schoor, Michael; Turnbull, TV; Maphalala, BDate:Nov 2022All geophysical methods have a specific niche application(s); however, some methods are more versatile than others and are applicable to a wider range of earth science problems. This is particularly true in the case of the GPR method, which ...Read more
Author:Mapako, M; Oliver, D; Covary, N; Mdluli, T; Musvoto, Constansia DDate:Jun 2009The transport sector is the major consumer of liquid petroleum fuels, and a major source of greenhouse gas emissions. It had been estimated to contribute 11% of total national greenhouse gas emissions. It is thus a significant contributor to ...Read more
Author:Steyn, WJ vdM; Nokes, W; Du Plessis, L; Agacer, R; Burmas, N; Holland, TJ; Popescu, LDate:Oct 2014Road condition affects the operations and costs of vehicles using the infrastructure, as well as the rate at which the road deteriorates during use. Therefore, active and timely management of the road condition can be used as a tool to extend ...Read more
Author:Olivier, JJ; Greenwood, PH; Cooper, Antony K; McPherson, DR; Engelbrecht, RDate:1990Owing to the complex, inter-disciplinary nature of geographical information systems (GIS), and to the wide variety of commercial GIS software available, considerable effort is needed to select software and hardware which most nearly matches ...Read more
Author:Jamison, Kevin A; Roux, Jeanne M; Zwane, LindokuhleDate:Sep 2021A development of an existing munition aimed at an entirely new target set was planned. A trade study was performed to identify the key design features and employment concepts that generate the optimum outcomes in a demanding operational ...Read more
Author:Abdul Gaffar, MY; Nel, Willem AJ; Inggs, MRDate:Sep 2009Inverse synthetic aperture radar (ISAR) imaging of sea vessels is a challenging task because their 3-D rotational motion over the coherent processing interval (CPI) often leads to blurred images. The selection of the duration of the CPI, also ...Read more
Author:Rotherham, LS; Maserumule, C; Dheda, K; Theron, J; Khati, MDate:Oct 2012Despite the enormous global burden of tuberculosis (TB), conventional approaches to diagnosis continue to rely on tests that have major drawbacks. The improvement of TB diagnostics relies, not only on good biomarkers, but also upon accurate ...Read more
Author:Manqele, S; Dlodlo, N; Mvelase, P; Dlodlo, M; Xulu, SS; Adigun, MDate:Jun 2013Cloud computing is an information and communication technology (ICT) that delivers services through the internet. The concept of discovering, brokering, selection and reliability is important in cloud computing as it has emerged as an important ...Read more