Author:Esser, MJD; Collett, O; Bollig, CDate:Oct 2010The authors present a continuous-wave slab laser utilising both Ho:YLF and Ho:LuLF as laser gain media. 30 W of output power at 2 µm was demonstrated in a stable concave-plane resonator while 13 W was achieved in a hybrid stable-unstable ...Read more
Author:Gray, IDate:Jan 2003This report contains a description of the stress measurement process and the results of
the stress measurements at Goedehoop. The results of the stress measurements show a very low horizontal stress regime but one in which the stresses are ...Read more
Author:Van der Walt, Christiaan M; Barnard, EDate:Nov 2009The authors propose a hyper-ellipsoid clustering algorithm that grows clusters from local structures in a dataset and estimates the underlying geometrical structure of data with a set of hyper-ellipsoids. The clusters are used to estimate a ...Read more
Author:Pillay, KDate:Oct 2017This presentation discusses cybersecurity operations as well as the cybersecurity hub implemented and used by the South African Department of Telecommunications and Postal Services.Read more
Author:Mvelase, PS; Dlodlo, N; Sithole, Happy M; Adigun, MDate:Dec 2015Research and commercial efforts are currently addressing challenges and providing solutions in cloud computing. Business models are emerging to address different use scenarios of cloud computing. In this paper, we present a virtual enterprise ...Read more
Author:Mamushiane, Lusani; Lysko, Albert A; Kobo, Hlabishi I; Mwangama, JDate:Aug 2023Field trials and experimentation are crucial for accelerating the adoption of standalone (SA) 5G in Africa. Traditionally, only network operators and vendors had the opportunity for practical experimentation due to proprietary systems and ...Read more
Author:Ngxande, Mkhuseli; Tapamo, J; Burke, MichaelDate:Jan 2019Recent work has shown significant progress in the direction of synthetic data generation using Generative Adversarial Networks (GANs). GANs have been applied in many fields of computer vision including text-to-image conversion, domain transfer, ...Read more
Author:Rossouw, M; Rautenbach, C; Page, Philip R; Harribhai, JatinDate:Apr 2015The present study addressed aspects of the highly interrelated study area of coastal safety and vulnerability, climate change and setback lines for South African coast. A medium resolution numerical wave analysis was undertaken, in the form ...Read more
Author:Oosthuizen, RudolphDate:Oct 2009The objective of Joint Air Defence (JAD) is to defend own assets against all types of hostile aerial attack. This may even happen within the context of Operations Other Than War (OOTW). Like general warfare, OOTW is a complex environment where ...Read more
Author:Cooper, Antony K; Hjelmager, J; Nielsen, A; Rapant, PDate:Aug 2003The International Cartographic Association (ICA) has a number of Commissions, including the Commission on Spatial Data Standards, and this presentation describes some of the work undertaken recently by the Commission. A spatial data structure ...Read more
Author:Marais, Laurette; Van Zijl, LDate:Sep 2017Previously, self-verifying symmetric difference automata were defined and a tight bound of 2^n-1-1 was shown for state complexity in the unary case. We now consider the non-unary case and show that, for every n at least 2, there is a regular ...Read more
Author:Pennefather, S; Irwin, Barry VWDate:Aug 2017This paper describes the design and application of Link, a Domain Specific Language (DSL) targeting the development of network applications focused on traffic manipulation at the frame level. The development of Link is described through the ...Read more
Author:Xing, B; Gao, W; Tlale, NS; Bright, GDate:May 2007Manufacturing companies are faced with the challenge of unpredictable, high frequency market changes in both local and international markets. There is a need for greater, more effective responsiveness by manufacturers to change their manufacturing ...Read more
Author:Ottermann, RW; Burger, NDL; Von Wielligh, AJ; De Wet, PRDate:Aug 2001Noise is a generic hazard common to all commodities and, to a greater or lesser extend affecting, all operations within mining. More people are exposed to the risk of noise- induced hearing impairment than to any other occupational hazard. ...Read more
Author:De Ponte, JD; Pieterse, FF; Bidgood, Peter MDate:May 2014In order to meet the increasingly stringent requirements for wind tunnel balances, as expressed by the wind tunnel testing community, balance design philosophy needs to be further expanded to include alternative sensor, material, design and ...Read more
Author:Gerber, AJ; Barnard, A; Van der Merwe, AJDate:May 2006The terms architecture, layered architecture and system architecture are often used by researchers, as well as system architects and business process analysts inconsistently. Furthermore, the concept architecture is commonplace in discussions ...Read more
Author:Khumalo, F; Jordaan, J; Abrahamse, H; Land, K; Potgieter, S; Sparrow, RDate:Jul 2009The development of a micro fluidic circuit for the separation of micro particles is being investigated. There are a wide range of available separation techniques such as acoustic, laminar flow, split flow, optical trapping and centrifugal ...Read more
Author:Tshweu, L; Katata, L; Naidoo, Saloshnee; Kalombo, Lonji; Swai, HDate:Oct 2012AIDS kills over 1.5 million people a year globally. Current HIV drugs pose many challenges. This presentation shows that nano-encapsulation of HIV drugs achieves controlled and steady drug release, and
reduced dosing frequency.Read more