Author:Oxtoby, Oliver F; Malan, AG; Heyns, Johan ADate:Oct 2015We describe a semi-implicit volume-of-fluid free-surface-modelling methodology for flow problems involving violent free-surface motion. For efficient computation, a hybrid-unstructured edge-based vertex-centred finite volume discretisation ...Read more
Author:Viljoen, A; Visser, AG; Groenwold, ADate:May 2005The computationally efficient analysis and optimum design of the buckling of stiffened, thin-walled shear panels in aircraft structures is discussed. Namely, the postbuckling behaviour of these panels is assessed using the iterative procedure ...Read more
Author:Beyers, RN; Koorbanally, Nicoli ADate:Jul 2010South Africa, and similar economies, cannot afford to lose another generation in the current schooling system, by failing to adequately equip youth to take advantage of life in a modern knowledge economy. This paper adopts a more philosophical ...Read more
Author:Malan, DF; Napier, JALDate:15 Aug 1995Microscopic observations indicate that intra- and transgranular fracturing are ubiquitous processes in the damage of rock fabrics. Extensive modelling of intergranular fracturing has been carried out previously using the distinct-element ...Read more
Author:Van Heerden, Renier P; Irwin, B; Burke, Ivan D; Leenen, LDate:2012Computer network attacks differ in the motivation of the entity behind the attack, the execution and the end result. The diversity of attacks has the consequence that no standard classification exists. The benefit of automated classification ...Read more
Author:Erasmus, TCDate:1973Since the conditions in the duct can vary, the data are recorded at the beginning, middle and end the sampling period for each sampling point.Read more
Author:Le Maitre, David C; Van Wilgen, BW; Richardson, DMDate:1993Managers of natural areas require a wide variety of up-to-date and accurate information and maps to manage their lands effectively. This paper reviews the objectives of conservation management, and the problems faced by mountain catchment ...Read more
Author:Withey, Daniel JDate:Oct 2015Computer vision systems are essential for practical, autonomous, mobile robots – machines that employ artificial intelligence and control their own motion within an environment. As with biological systems, computer vision systems include the ...Read more
Author:Adeleke, Oluwatoyin A; Karry, KM; Michniak-Kohn, BB; Monama, Nkwe ODate:Oct 2015The purpose of this abstract is to design and characterize a thermodynamically stable mouth-dissolving film containing isoniazid employing in silico and in vitro techniques. Isoniazid (solubility = 140 mg/mL and log P = -0.64 at 25°C) is a ...Read more
Author:Dhlamini, MS; Mhlongo, Gugu H; Swart, HC; Ntwaeaborwa, OW; Hillie, KTDate:May 2012Cathodoluminescence (CL) properties of SiO2 powders activated with thulium
(Tm3+) and holmium (Ho3+) ions prepared by a sol–gel process were
investigated. Different molar concentrations of Tm3+ co-doped with Ho3+ were
studied. The 460 nm ...Read more
Author:Batterman, S; Chernyak, S; Gounden, Y; Matooane, MRDate:Jan 2007This paper reports on an extensive ambient air quality monitoring program in Durban (eThekwini Municipality), South Africa, on Africa’s southeast coast. Following a multi stakeholder process coordinated by the Municipality Metropolitan Health ...Read more
Author:Britz, K; Meyer, T; Varzinczak, IDate:Jul 2011The preferential and rational consequence relations first studied by Lehmann and colleagues play a central role in non-monotonic reasoning, not least because they provide the foundation for the determination of the important notion of rational ...Read more
Author:Gueli, RJ; Liebenberg, FSDate:2006To overcome the mantra of ‘African solution for African problems’, Africa needs permanent institutions and means (and not makeshift committees, plug-and-play forces, and rosters of experts) to improve integrated planning and action in peace ...Read more
Author:Gonçalves, Duarte PDDate:Sep 2021INCOSE has expressed its vision for transdisciplinary approach for systems engineering to address complex societal problems. While the concept of ‘system’ has been dealt with at length, the purpose of this article is to surface assumptions ...Read more
Author:Gonçalves, Duarte PDDate:Sep 2021INCOSE has expressed its vision for transdisciplinary approach for systems engineering to address complex societal problems. While the concept of ‘system’ has been dealt with at length, the purpose of this article is to surface assumptions ...Read more
Author:Meissner, RichardDate:Jul 2016Analysts of environmental impact assessment and sustainability assessment tools recognise that ideally different types of knowledge and thinking need to be incorporated for such tools to be more effective in their sustainability objectives. ...Read more
Author:Cooper, Antony K; Peled, ADate:Jul 2004This presentation summarised the work the ICA Working Group has been doing on defining the concepts of the incremental updating and versioning of spatial databasesRead more
Author:Kotzé, Paula; Foster, RDate:Sep 2014The development and use of national guidelines for the exchange of patient-centric healthcare data from electronic medical record systems are essential for the consistent and efficient use and analysis of those data. These guidelines must be ...Read more