Author:Bopape, Mary-Jane M; Engelbrecht, F; Randall, D; Landman, WDate:01 Sep 2010The eastern part of South Africa is a summer rainfall region, and most of its rainfall is of convective origin. Convective rainfall is often associated with hail, lightning and tornadoes – all of which can damage property and cause casualties, ...Read more
Author:Van de Steen, B; Vervoort, A; Napier, JAL; Durrheim, RJDate:Apr 2003This paper investigates whether a micromechanical model developed to investigate the relation between the basic failure processes at grain-scale and the macroscopic failure pattern can be applied to model the fracturing around large-scale ...Read more
Author:Van den Heever, SC; D'Abreton, PC; Tyson, PDDate:Aug 1997Tropical-temperate troughs and their associated cloud bands have been modelled over southern Africa using the Regional Atmospheric Modelling System (RAMS). The correspondence between simulated fields and observational data for both the dry, ...Read more
Author:Malan, DFDate:Oct 2002Although hard rock is not usually associated with large creep deformation, data collected from the tunnels and stopes of the deep South African gold mines illustrates significant time-dependent behaviour. Apart from application in mining, a ...Read more
Author:Hamadou Ibrahim, A; Roux, FS; Konrad, TDate:Jul 2011This study focusses on short distance free-space communication, long distance free-space communication, as well as the challenges for free-space communication. The phase screen method is discussed, and the question "how do we know that we are ...Read more