Author:Rosman, Benjamin SDate:Oct 2014Representation learning is a difficult and important problem for autonomous agents. This paper presents an approach to automatic feature selection for a long-lived learning agent, which tackles the trade-off between a sparse feature set which ...Read more
Author:Burke, Michael GDate:Nov 2009This poster presents a visual servo approach to straight line range and velocity regulation. The difference in velocity between a lead mobile robot and a follower is regulated through velocity control of the follower, in order to maintain a ...Read more
Author:Featherstone, Coral; Van der Poel, EDate:Jun 2017Computational creativity is a multi-disciplinary area of research that investigates what aspects of computing can be considered as an analogue to the human creative process. One premise is that humans come up with new concepts or creative ...Read more
Author:De Beer, MorrisDate:Nov 2001Describes in summary the attendance of the author at an invited meeting of the COST 347 ALT (Accelerated Loading Testing) Committee in Cologne, Germany, Europe. The meeting was held at Bast, near Cologne, from 27th June 2001 to 29th June 2001. ...Read more
Author:Amigun, B; Petrie, D; Gorgens, JDate:Sep 2013The production of fuel grade ethanol from nonfood grade crops in South Africa has the potential to reduce reliance on imported oil and minimize the negative environmental consequences of fossil fuels. This article presents a preliminary ...Read more
Author:Roberts, DE; Du Plessis, A; Botha, LRDate:2009The average ablation depth per pulse of silver foil by 130 fs laser pulses has been measured in vacuum over a range of three orders of magnitude of pulse fluence up to 900 J cm_2. In addition, double pulses with separations up to 3.4 ns have ...Read more
Author:Roberts, DE; Du Plessis, A; Botha, LRDate:2009The average ablation depth per pulse of silver foil by 130 fs laser pulses has been measured in vacuum over a range of three orders of magnitude of pulse fluence up to 900 J cm-2. In addition, double pulses with separations up to 3.4 ns have ...Read more
Author:Du Plessis, A; Strydom, CA; Uys, H; Botha, L; Roberts, T; Dlamini, THDate:Sep 2010Femtosecond laser control of chemical reactions is made possible through the use of pulse-shaping techniques coupled to a learning algorithm feedback loop – teaching the laser pulse to control the chemical reaction. This can result in ...Read more
Author:Du Plessis, A; Strydom, CA; Uys, H; Botha, L; Roberts, T; Dlamini, THDate:31 Aug 2010Femtosecond laser control of chemical reactions is made possible through the use of pulse-shaping techniques coupled to a learning algorithm feedback loop – teaching the laser pulse to control the chemical reaction. This can result in ...Read more
Author:Du Plessis, A; Strydom, CA; Uys, H; Hendriks, A; Botha, GN; Botha, LRDate:Jul 2011Results from experiments aimed at bimolecular chemical reaction control of CO and H2 at room temperature and pressure, without any catalyst, using shaped femtosecond laser pulses are presented. A stable reaction product (CO2) was measured ...Read more
Author:Mthunzi-Kufa, Patience; Dholakia, K; Gunn-Moore, FDate:Aug 2011Owing to their self renewal and pluripotency properties, stem cells can efficiently advance current therapies in tissue regeneration and/or engineering. Under appropriate culture conditions in vitro, pluripotent stem cells can be primed to ...Read more
Author:Ombinda-Lemboumba, Saturnin; du Plessis, A; Botha, LR; Rohwer, EG; Steenkanp, CMDate:01 Sep 2010Phthalocyanines are new class of photosensitiser used for photodynamic therapy. These drugs are used to treat small and superficial tumours. In recent years, a particular attention has been given to phthalocyanine in order to search suitable ...Read more
Author:Van Zyl, PJDate:Apr 2006The presentation is based on the new challenges facing an age old technology of fermentation. These challenges were presented at the SASM Conference, the conclusion been that the future of fermentation is only limited by our imagination. ...Read more
Author:Mnkeni, PNS; Austin, LMDate:Jan 2009Ecological sanitation is a system that, unlike the traditional waterborne sewerage and pit toilet systems, regards human excreta as a resource to be recycled rather than as a waste. There is, however, little or no information on the fertiliser ...Read more