Author:Attia, H; Osman, Muhammad S; Johnson, DJ; Wright, C; Hilal, NDate:Dec 2017In the present study, theoretical and experimental investigations were carried out to examine the effect of changing the operating parameters of an air gap membrane distillation (AGMD) system on the performance of electrospun and commercial ...Read more
Author:Lysko, Albert ADate:Mar 2010The paper discusses aspects of a novel impedance matrix compressing technique and applies the technique to a coil-loaded monopole. The technique can reduce the number of variables required for modelling of structures with curvatures and ...Read more
Author:Oosthuizen, Rudolph; Pretorius, LDate:Jun 2014Different systems engineering techniques and approaches are applied to design and develop Command and Control solutions for complex problems. Command and Control is a complex sociotechnical system where human commanders make sense of a situation ...Read more
Author:Grobler, Jan-Hendrik; de Villiers, R; Cooper, Antony KDate:Jan 2010A method is proposed for the modelling of fluid-solid interaction in applications where fluid forces dominate. Data are transferred between two stand-alone codes: a dedicated computational fluid dynamics (CFD) code capable of free surface ...Read more
Author:Mkasi, Hlaluku W; Lawrence, Pratt; Ayanna, Manjunath B; Roro, Kittessa TDate:Nov 2021The high demand for low carbon energy and rapidly decreasing solar panel prices have led to a surge in solar photovoltaic (PV) plants across the globe, more than at any other time since the industry began. Combined with geographic variations ...Read more
Author:Naude, AH; Le Maitre, David C; De Jong, T; Forsyth, G; Mans, Gerbrand G; Hugo, WDate:Jun 2008The paper outlines the challenges of modelling and assessing spatially complex human-ecosystem interactions, and the need to simultaneously consider rural-urban and rich-poor interactions. The context for exploring these challenges is South ...Read more
Author:Roodt, JH; Leenen, L; Van Vuuren, JJ; Dawood, Zubeida CDate:Jul 2020Complex societal problems require a multidisciplinary and multi-method approach to develop models that can support the development of solutions. General morphological analysis is a qualitative method to extract information from experts through ...Read more
Author:Sellers, EJ; Klerck, PDate:Oct 2000A series of physical and numerical model tests were performed to investigate the behaviour of the rock surrounding circular excavations under high confining pressures. The aim was to provide information on the formation of fractures around ...Read more
Author:Scholtz, MT; Brouckaert, CJDate:1976The flow of stable air over a general region of complex topography and non-uniform surface temperature has been investigated. In order to gain further understanding of the motion of surface air, it was necessary to study the vertical structure ...Read more
Author:May, Siyasanga I; Pratt, Lawrence E; Roro, Kittessa T; Bokoro, PDate:Aug 2022This work focuses on modelling the power output of multiple PV technologies installed at the outdoor test facility of the Council for Scientific and Industrial Research (CSIR) in Pretoria. Extreme Gradient Boosting (XGB) and Artificial Neural ...Read more
Author:Engelbrecht, JP; Swanepoel, L; Zunckel, M; Chow, JC; Watson, JG; Egami, RTDate:30 Mar 2000D-grade (i.e. poor quality) coal is widely used for household cooking and heating purposes by lower-income urban communities in South Africa. The smoke from the combustion of coal has had a severe impact on the health of society in the townships ...Read more
Author:Kleinhans, A; Thill, S; Rosman, Benjamin S; Detry, R; Tripp, BDate:Sep 2014The neural circuits that control grasping and perform related visual processing have been studied extensively in Macaque monkeys. We are developing a computational model of this system, in order to better understand its function, and to ...Read more
Author:Kok, SDate:Jan 2011A new method is proposed to predict the irradiation induced property changes in nuclear; graphite, including the effect of a change in irradiation temperature. The currently used method; to account for changes in irradiation temperature, the ...Read more
Author:Hildyard, MW; Young, RPDate:03 Jan 2002The potential for large excavation-induced seismic events may be recognised, even if the timing of an event may be inherently unpredictable. In this case, modelling the wave propagation from a potential event could allow the dynamic motions ...Read more
Author:Gush, Mark BDate:Aug 2006Numerous local and international studies have indicated conclusively that forest plantations consume more water than natural forests, grasslands or shrublands, and hence reduce water yield (streamflow) from afforested catchments. These water ...Read more
Author:Jansen van Vuuren, JC; Leenen, L; Grobler, MM; Chan, Ka Fai P; Dawood, Zubeida CDate:Mar 2015Acquiring, representing, and managing knowledge effectively has a considerable impact on constructing accurate and intelligent systems. A challenge faced by domain experts is the manner in which information about the cybersecurity environment ...Read more
Author:Lötter, D; Le Maitre, David CDate:Apr 2014Aspalathus linearis (Burm. f.) R. Dahlgren (rooibos) is endemic to the Fynbos Biome of South Africa, which is an internationally recognised biodiversity hotspot. Rooibos is both an invaluable wild resource as well as commercially cultivated ...Read more
Author:Engelbrecht, Andre D; North, Brian C; Oboirien, BilainuDate:Oct 2017Chemical-looping combustion (CLC) of coal has emerged as a clean coal technology that can potentially be applied for the efficient combustion of coal while producing flue gas that has a CO2 concentration of greater than 99 %. An important ...Read more