Author:Dlamini, Moses T; Eloff, MM; Eloff, JHP; Hone, KDate:Jul 2009The entire business landscape finds itself on the verge of a recession because of ongoing global economic turmoil. Thus, there is a heightened need to minimise and mitigate business risk and scrutinise information spending while ensuring ...Read more
Author:Rens, G; Ferrein, A; Van der Poel, EDate:Jun 2009Traditionally, agent architectures based on the Belief-Desire-Intention (BDI) model make use of precompiled plans, or if they do generate plans, the plans do not involve stochastic actions nor probabilistic observations. Plans that do involve ...Read more
Author:Butgereit, L; Coetzee, LDate:May 2011As more and more “smart things” get connected to the Internet, the “Internet of Things” grows. It is currently quite common that aircraft have transponders and cars have tracking devices. Even the family pet, FIDO, often has a chip embedded. ...Read more
Author:Litvin, Igor A; King, Gary R; Strauss, Hencharl JDate:Jun 2017We propose a novel intra-cavity laser beam shaping technique based on the manipulation of the transverse gain profile in the laser crystal. The method allows controllable reshaping of a laser output beam into a desired beam profile. Two laser ...Read more
Author:Mofolo, ROM; Lysko, Albert A; Olwal, TO; Clarke, WADate:Sep 2011In this paper, the authors present a method of electronic beam steering for circular switched parasitic array (SPA) antennas. In circular SPA antennas, one achieves azimuth beam steering by open-circuiting and short-circuiting different ...Read more
Author:Schulze, C; Flamm, D; Duparré, M; Forbes, ADate:Nov 2012We present a fast and easy technique for measuring the beam propagation ratio, M2, of laser beams using a spatial light modulator. Our technique is based on digitally simulating the free-space propagation of light, thus eliminating the need ...Read more
Author:Berger, DK; Oelofse, D; Arendse, MS; Du Plessis, E; Dubery, IADate:Jul 2000Stenocarpella maydis, a fungal pathogen of maize, produced polygalacturonases (PGs) when grown on pectin or maize cell walls. An extract from bean (Phaseolus vulgaris L.) which contained an active inhibitor of Aspergillus niger PG, also ...Read more
Author:Dickens, J; Swart, HDate:Nov 2015Mobile robotics has a wide range of applications resulting in a diverse array of designs including a variety of sensors and manipulators. The task of integrating the variety of components that make up a typical robotic system takes significant ...Read more
Author:Litvin, IADate:Jun 2012In this work we investigate the behavior of the instantaneous Poynting vector of symmetrical paraxial laser beams, namely the modification of the instantaneous Poynting vector and the radiation pattern during propagation in free space for a ...Read more
Author:York, G; Squelch, APDate:Nov 1992Cemented backfill is used at Western Deep Mine as local and regional support areas of high stopping width. The in situ performance is reported and compared to laboratory tests. A back analysis was carried out to obtain a more accurate value ...Read more
Author:Erinosho, MF; Akinlabi, ET; Pityana, Sisa LDate:2016Ti6Al4V alloy is a well-known material for biomedical application due to the very excellent corrosion resistance it possessed. Cu has an excellent antimicrobial property and stabilizes the immune system of the body activities. In this present ...Read more
Author:De Beer, Morris; Kleyn, EG; Wolff, H; Otte, JRDate:1991This paper summarises the full scale accelerated research done during the past six years with the Heavy Vehicle Simulator (HVS) belonging to the Roads Branch of the Transvaal Provincial Administration (TPA). The research concentrated on the ...Read more
Author:Dlamini, Thandokuhle M; Eloff, JHP; Venter, HS; Eloff, MM; Henha Eyono, RPS; Mosola, NNDate:Sep 2017This paper investigates how to effectively stop an attacker from using compromised user credentials to gain authorized entry to systems that they are otherwise not authorised to access. The proposed solution extends previous work to move ...Read more
Author:Rosman, Benjamin SDate:Nov 2014An agent continuously performing different tasks in the same domain has the opportunity to learn, over the course of its operational lifetime, about the behavioural regularities afforded by the domain. This paper addresses the problem of ...Read more
Author:Ramotsoela, TD; Hancke, GP; Abu-Mahfouz, Adnan MIDate:Oct 2020There has been an increasing number of attacks against critical water system infrastructure in recent years. This is largely due to the fact that these systems are heavily dependent on computer networks meaning that an attacker can use ...Read more
Author:Winschiers-Theophilus, H; Chivuno-Kuria, S; Kapuire, GK; Bidwell, NJ; Blake, EDate:2010In this paper, we explore the concept of participatory design from a different viewpoint by drawing on an African philosophy of humanness -Ubuntu-, and African rural community practices. The situational dynamics of participatory interaction ...Read more
Author:Van Huyssteen, ElsonaDate:Mar 2018The thesis, Being, becoming and contributing in (and through) Planning, provides an overview and reflection on an innovative narrative-based enquiry into personal and professional work-life experiences of planning practitioners. It is aimed ...Read more
Author:Booth, R; Meyer, TDate:Jul 2012In this paper the authors present a brief overview of belief change, a research area concerned with the question of how a rational agent ought to change its mind in the face of new, possibly conflicting, information. The authors limit themselves ...Read more
Author:Booth, R; Meyer, TDate:Aug 2011In this paper the authors present a brief overview of belief change, a research area concerned with the question of how a rational agent ought to change its mind in the face of new, possibly conflicting, information. The authors limit themselves ...Read more
Author:Marom, O; Rosman, Benjamin SDate:Feb 2018A key challenge in many reinforcement learning problems is delayed rewards, which can significantly slow down learning. Although reward shaping has previously been introduced to accelerate learning by bootstrapping an agent with additional ...Read more