Author:Mamushiane, Lusani; Mwangama, J; Lysko, Albert A; Kobo, Hlabishi IDate:Aug 2022The global impact of COVID-19 has been unprecedented, with over-the-top (OTT) services consumption growing at a staggering rate. While OTT does consume revenue-generating data, OTT services are gradually substituting the traditional primary ...Read more
Author:Reddy, Reeshen; Sinha, SDate:Apr 2015This paper presents a six-bit current-steering digital-to-analogue converter (DAC), which optimises the spurious free dynamic range (SFDR) performance of high-speed binary weighted architectures by lowering current switch distortion and ...Read more
Author:Ittman, H; Schoeman, C; King, D; Bean, W; Viljoen, NDate:Mar 2010The 2009 theme for the state of logistics’ survey is ‘Logistics Value and Costs – Driving Macro and Micro-economic Change towards Global Competitiveness and Sustainability’. For South Africa to become and stay competitive internationally the ...Read more
Author:Steyn, Maronel; Walters, Chavon RDate:Nov 2021Water scarcity, increased pollution, unprecedented population growth and climate change are collectively driving the need to reuse water with the aim to enhance water security, sustainability, and resilience. It is clear that South Africa¿s ...Read more
Author:Edwards, ADate:Sep 2009The Occupational Exposure Limit (OEL) for noise is legislated to be 85 dBA. However, owing to the energy of different frequencies the effect on the ear by sounds of different frequencies is known to vary. Also, there is recent evidence of the ...Read more
Author:Viljoen, NDate:May 2012The global economic landscape is shifting with increased focus on emerging markets that have been more resilient than their counterparts in developed countries. Countries that never featured as consumer markets in the past are suddenly appearing ...Read more
Author:Mandiwana, Vusani; Kalombo, Lonji; Grobler, A; Zeevaart, JRDate:Nov 2018The aim of this study was to establish the in vivo uptake and tissue distribution of (sup)99mTc-MDP-encapsulated Solid Lipid Nanoparticles (SLNs) post administration. Radioactive (sup)99mTc-MDP encapsulated into SLNs was administered to rats ...Read more
Author:Kunstmann, FDate:1963The determination of the Bonding Index, as described in the last annual report, proved to be useful test of the coking ability of a coking coal. Unfortunately, all attempts to lay down specifications for the standard anthracite, which determine ...Read more
Author:Tönsing, KM; Van Niekerk, K; Schlunz, Georg I; Wilken, IlanaDate:Jun 2018BACKGROUND: In South Africa, many persons in need of augmentative and alternative communication (AAC) come from multilingual backgrounds. There is as yet a limited evidence base (locally and internationally) for the provision of AAC services ...Read more
Author:Kganyago, KR; Ngoepe, PE; Catlow, CRADate:Mar 2003Energetics of the anode system LiC6 compared to metallic lithium is calculated within the framework of local-density functional theory (LDA-DFT) techniques. Our results suggest that the energy of anode intercalation results in a small change ...Read more
Author:Mashapa, MG; Chetty, N; Ray, Suprakas SDate:Sep 2012A systematic study of vacancies in single-walled carbon nanotubes and boron nitride nanotubes was carried out. First principles calculations within the framework of density functional theory using the CASTEP code are used to optimize fully ...Read more
Author:Anderson, PML; Hoffman, MT; O'Farrell, Patrick JDate:Aug 2010This study set out to generate estimates of the standing perennial biomass for six different vegetation types, and associated upland and lowland habitats, across the altitudinal gradient presented by the Kamiesberg mountain range in the ...Read more
Author:Bouvet, A; Mermoz, S; Le Toan, T; Villard, L; Mathieu, Renaud SA; Naidoo, Laven; Asner, GPDate:Mar 2018Savannahs and woodlands are among the most important biomes in Africa: they cover half of sub-Saharan Africa, provide vital ecosystem services to the rural communities, and play a major part in the carbon budget. Despite their importance and ...Read more
Author:Rutherford, MCDate:Jan 1979Aboveground peak season biomass is given for 11 woody species in each of five belt transects under study. Mean aerial biomass for all species was 16 273 kg ha, made up of 14 937 kg ha wood, 236 kg ha current season's twigs and 1 100 kg ha ...Read more
Author:Halland, K; Britz, KDate:Oct 2012The formal definition of abduction asks what needs to be added to a knowledge base to enable an observation to be entailed by the knowledge base. ABox abduction in description logics (DLs) asks what ABox statements need to be added to a DL ...Read more