Author:Litvin, IA; Ngcobo, Sandile; Naidoo, Darryl; Ait-Ameur, K; Forbes, ADate:Feb 2014Laguerre–Gaussian beams with a nonzero azimuthal index are known to carry orbital angular momentum (OAM), and are routinely created external to laser cavities. The few reports of obtaining such beams from laser cavities suffer from inconclusive ...Read more
Author:Mkhwanazi, M; Landman, WA; Engelbrecht, FA; Olivier, CDate:Sep 2015The study assesses the impacts of anthropogenic forcing on seasonal streamflows over northeastern South Africa by using both dynamically and statistically downscaled multi-decadal climate change projections. The statistical model approach is ...Read more
Author:Lalloo, Rajesh; Maharajh, Dheepak M; Görgens, J; Gardiner, NDate:Mar 2010Biological products offer advantages over chemotherapeutics in aquaculture. Adoption in commercial application is lacking due to limitations in process and product development that address key end user product requirements such as cost, ...Read more
Author:Butgereit, LDate:Oct 2012In this presentation the author explains how the Dr Math service works; how tutors are recruited to act as Dr Math; and how school pupils can reach Dr Math for help with their mathematics homework.Read more
Author:Butgereit, L; Leonard, B; Le Roux, C; Rama, H; De Sousa, M; Naidoo, TDate:May 2010The current group of teenagers has been called many things – some of the terms unprintable in respectable publications. However terms such as the “thumb tribe” (because they can type faster on their cell phones with their thumbs than adults ...Read more
Author:Butgereit, L; Botha, RADate:Jan 2010Dr Math is a mobile tutoring system which has been running in South Africa for three years. It links primary and secondary school pupils to tutors in mathematics. The pupils use the popular Mxit chat client on their cell phones. The tutors ...Read more
Author:Butgereit, LLDate:May 2008Mathematics education in South Africa needs help. This paper describes a project where school aged pupils could get help with their mathematics homework using MXit, South Africa's most popular instant messaging system, on their cell phones ...Read more
Author:Cooper, Antony K; Eloff, C; Schmitz, PMUDate:Aug 2010This position paper was drafted shortly after the first meeting of the Committee for Spatial Information (CSI), because it was obvious from that first meeting that most of the members of the CSI had little knowledge of spatial data infrastructures ...Read more
Author:Szewczuk, SDate:Aug 2011The South African Wind Energy Technology Programme (SAWEP) Phase 1 aims to achieve two key strategic outputs that will guide South Africa on wind energy development. One of these outputs is the Wind Atlas for South Africa (WASA) which will ...Read more
Author:Bonapace, ACDate:1971The drag coefficient of a solitary particle when moving relative to a fluid, when rising or falling vertically in a stationary fluid, is a well-known function of the particle Reynolds number.Read more
Author:Taylor, SJ; Ferguson, JHW; Engelbrect, Francois A; Clark, VR; Van Rensburg, S; Barker, NDate:Nov 2016During the past century, South Africa focused on engineered systems (dams, inter-basin transfers, tunnels, and pipelines) to safeguard its water supply. National water security in South Africa in the future is now expected to depend on an ...Read more
Author:Musvoto, Constansia DDate:Dec 2015The green economy, with its underlying philosophy of reducing the dependence of economic development on the increased consumption of and damage to natural resources is a tool for achieving sustainable development. Globally, a green economy ...Read more
Author:Ngxande, Mkhuseli; Tapamo, J-R; Burke, Michael GDate:Nov 2017This paper presents a literature review of driver drowsiness detection based on behavioral measures using machine learning techniques. Faces contain information that can be used to interpret levels of drowsiness. There are many facial features ...Read more
Author:Venter, KarienDate:Jul 2017As part of an ongoing effort to explore driver behaviour in South Africa, this research investigates non-motorised transport users as an element of risk in the driving environment from a driver perspective. This research made use of a small ...Read more
Author:Knüppe, K; Meissner, RichardDate:Nov 2016Over the last 17 years South Africa's water and land resources management has changed dramatically. This rapid evolution has been accompanied by a growing number of laws and policies to co-balance water allocation for human basic needs and ...Read more
Author:Jacob, M; Erasmus, JDate:Sep 2014Product Lifecycle Management (PLM) combines enterprise-wide product and process innovation improving the manufacturing industry’s ability to meet the need for shorter product lifecycles, satisfying customers’ expectations and adhere to stricter ...Read more
Author:Archibald, SA; Kirton, A; Van der Merwe, Martina R; Scholes, RJ; Williams, CA; Hanan, NDate:2009Inter-annual variability in primary production and ecosystem respiration was explored using eddy-covariance data at a semi-arid savanna site in the Kruger Park, South Africa. New methods of extrapolating night-time respiration to the entire ...Read more
Author:Raw, JL; Godbold, JA; Van Niekerk, Lara; Adams, JBDate:Oct 2019Mangrove distribution patterns at regional scales are influenced by additional factors besides temperature and rainfall regimes. This study identified abiotic drivers of mangrove area cover along the high-energy, wave-dominated coastline of ...Read more
Author:Rust, FCDate:Jan 2009There is no doubt that infrastructure in general and specifically transport infrastructure plays a major role in economic development (Weisbrod G 1997, Chapman P et al 2002) as well as in social development (UNCDF 2007). In addition, construction ...Read more
Author:Mbanjwa, MB; Windvoel, TV; Land, KJDate:Oct 2012Droplet-based microfluidics has, in recent years, received increased attention as an important tool for performing numerous
methods in modern day chemistry and biology, such as synthesis of hydrogel microparticles. The droplet-based ...Read more