Author:Van Hulten, M; Sterl, A; Tagliabue, A; Dutay, J-C; Gehlen, M; De Baar, HJW; Middag, RDate:Oct 2013A model of aluminium has been developed and implemented in an Ocean General Circulation Model (NEMO-PISCES). In the model, aluminium enters the ocean by means of dust deposition. The internal oceanic processes are described by advection, ...Read more
Author:Pieterse, HeloiseDate:Jun 2017People are creatures of habit, favouring the familiar over unpredictability, which causes them to usually follow set patterns or routines. This is especially true for social interaction or communication where people tend to prefer familiar ...Read more
Author:Harmse, M; Janse Van Rensburg, SJDate:May 2007Sasol, a petrochemical company in the Republic of South Africa, uses coal to produce oil and chemical products. The coal is mined in the area surrounding the Sasol plants and is transported with conveyor belts to the stockpiles at the gas ...Read more
Author:Engelbrecht, AD; North, Brian C; Hadley, TDDate:Nov 2008Electricity demand in South Africa is increasing at a rate of 1000 MW per year. Whilst there is increasing pressure to adopt non-fossil fuel electricity generating technologies, the abundant reserves and low cost of coal make it the preferred ...Read more
Author:House, JI; Archer, S; Breshears, DD; Scholes, RJDate:Nov 2003The article aims to identify approaches to improve our understanding of, and predictive capability for, mixed tree-grass systems. Elucidation of the interactions, dynamics and determinants, and identification of robust generalizations that ...Read more
Author:Mbanjwa, MB; Land, K; Jewell, LL; Gledhill, Irvy MADate:Jan 2011The production of water-in-oil (w/o) emulsions in T-junction microfluidic channels was studied through experiments and computational fluid dynamics (CFD). W/o emulsions were produced in the microchannels from deionised water and mineral oil. ...Read more
Author:Engelbrecht, AS; North, Brian C; Oboirien, BO; Everson, RC; Neomagus, HWPJDate:Nov 2011The gasification of two high-ash coals were studied using a pilot scale fluidised bed gasifier using oxygen enrich air and steam as the gasification agents. The results of the tests show that the fixed carbon conversion and calorific value ...Read more
Author:Van Aardt, JAN; Wynne, RH; Oderwald, RGDate:May 2006This study assessed a lidar-based, object-oriented (segmentation) approach to forest volume and aboveground biomass modeling. The study area in the Piedmont physiographic region of Virginia is composed of temperate coniferous, deciduous, and ...Read more
Author:Malinga, Andries L; Le Roux, WHDate:Jul 2009The performance of three Run-Time Infrastructures (RTI) is measured. Two open source implementations (Portico version 0.8 and CERTI version 3.3.0) and one commercial implementation (MÄK version 3.2) have been subjected to a specific test under ...Read more
Author:Le Roux, WHDate:Jun 2006As part of Modelling and Simulation-based Acquisition Decision Support to a Ground-Based Air Defence acquisition programme, dedicated simulations have been used to evaluate and develop tactical doctrine, define measures of performance and ...Read more
Author:Le Roux, AlizeDate:Jul 2013It is difficult for policy and decision makers to observe and quantify the implications of their land use policies and strategies and what it might or might not mean for a city's landscape a decade or more from now. The CSIR Spatial Planning ...Read more
Author:Nahman, Anton; Oelofse, Suzanna HHDate:Oct 2018The SASCOST model is a tool for comparing the costs and benefits of alternative options for implementing a Separation at Source (S@S) recycling programme. S@S is a crucial step in implementing the waste management hierarchy. The model can be ...Read more
Author:Hatch, GP; Tainton, NMDate:Jun 1997Grazing trials were established at two sites in the semi-arid savanna (Lowveld) of KwaZulu-Natal. The sites differed initially in range composition. Llanwarne was dominated by Themeda triandra, Panicum maximum and P. coloratum, and Dordrecht ...Read more
Author:Uys, DC; Le Roux, WHDate:Jul 2009The results of attempting to define a JC3IEDM (Joint Consultation, Command and Control Information Exchange Data Model) aware or compliant federate object model for the High Level Architecture (HLA), are presented. The primary aim of the ...Read more
Author:Engelbrecht, AD; North, Brian C; Hadley, TDDate:Sep 2007Electricity demand in South Africa is increasing at a rate of 1000 MW per year. Whilst there is increasing pressure to adopt non-fossil fuel electricity generating technologies, the abundant reserves and low cost of coal makes it the preferred ...Read more
Author:Duvenhage, A; Kourie, DG; Hancke, GPDate:Sep 2009Modelling and simulation can be applied to support Joint Command and Control (JC2) which involves the interoperability of network-centric systems as well as legacy command and control systems. It is assumed that software will always be the ...Read more
Author:Naidoo, ShahenDate:Oct 2009The purpose of this paper is to discuss M&S activities that have contributed to the Ground Based Air Defence System (GBADS) programme over the years and to look specifically at the future role of M&S within the Joint Air Defence (JAD) ...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