Author:Grobler, J; Engelbrecht, AP; Kendall, G; Yadavalli, VSSDate:Jul 2014This paper introduces the concept of heuristic space diversity and investigates various strategies for the management of heuristic space diversity within the context of a meta-hyper-heuristic algorithm. Evaluation on a diverse set of ...Read more
Author:Grobler, J; Engelbrecht, AP; Kendall, G; Yadavalli, VSSDate:Jul 2014This paper introduces the concept of heuristic space diversity and investigates various strategies for the management of heuristic space diversity within the context of a meta-hyper-heuristic algorithm. Evaluation on a diverse set of ...Read more
Author:Andrew, JE; Grzeskowiak, V; Kerr, IDate:Oct 2009Hexenuronic acid (HexA) is formed during kraft pulping by the conversion of 4-O-methyl-glucuronic acid groups in strong alkali conditions. HexA can be removed from the pulp by including an acid hydrolysis (A) stage in the bleaching sequence. ...Read more
Author:Du Preez, Ilse; Richter, Wim; Van Papendorp, D; Joubert, ADate:2018Much research over the past five decades has focussed on the repair and replacement of bone. Recently, the research focus has shifted to nanotechnology since it provides a platform from which to alter and possibly improve materials’ properties. ...Read more
Author:Saasa, Valentine R; Malwela, Thomas; Lemmer, Yolandy; Beukes, M; Mwakikunga, Bonex WDate:Oct 2020Hierarchical nanostructured Co-doped WO3 with carbon as template has been successfully synthesised through facile sol-gel method. The synthesised Co-doped WO3 was characterized by X-ray diffraction, Scanning electron microscopy, Transmission ...Read more
Author:Raju, Kumar; Ozoemena, KIDate:Dec 2015High-performance electrochemical capacitors will drive the next-generation portable, flexible and wearable electronics. Unlike the conventional all-carbon supercapacitors (electric double layer capacitors, EDLC) with high power but poor energy ...Read more
Author:Earle, AC; Saxe, AM; Rosman, Benjamin SDate:Aug 2017Hierarchical reinforcement learning methods offer a powerful means of planning flexible behavior in complicated domains. However, learning an appropriate hierarchical decomposition of a domain into subtasks remains a substantial challenge. ...Read more
Author:Earle, AC; Saxe, AM; Rosman, Benjamin SDate:Apr 2018Hierarchical reinforcement learning methods offer a powerful means of planning flexible behavior in complicated domains. However, learning an appropriate hierarchical decomposition of a domain into subtasks remains a substantial challenge. ...Read more
Author:Saxe, AM; Earle, AC; Rosman, Benjamin SDate:Aug 2017Hierarchical architectures are critical to the scalability of reinforcement learning methods. Most current hierarchical frameworks execute actions serially, with macro-actions comprising sequences of primitive actions. We propose a novel ...Read more
Author:Botha, RC; Koen, W; Esser, MJD; Bollig, C; Combrinck, WL; Von Bergmann, M; Strauss, Hencharl JDate:Feb 2015A 1314 nm two-crystal Nd:YLF laser was designed and operated in both CW and actively Q-switched modes. Maximum CW output of 26.5 W resulted from 125 W of combined incident pump power. Active Q-switching was obtained by inserting a Brewster-cut ...Read more
Author:Kemp, Lana; Steenkamp, Anton J; De Saxe, CCDate:Sep 2021The substantial road maintenance backlog in South Africa, coupled with an inadequate budget allocation, requires high impact solutions in order to preserve the 158 000 km paved road network. Focussing efforts on the heavy vehicles operating ...Read more
Author:McGuigan, KG; Samaiyar, P; Du Preez, M; Conroy, RMDate:Sep 2011Recent solar disinfection (SODIS) studies in Bolivia and South Africa have reported compliance rates below 35% resulting in no overall statistically significant benefit associated with disease rates. In this study, the authors report the ...Read more
Author:McLaren, M; Roux, FS; Forbes, ADate:Jul 2012This presentation highlights the increasing interest in quantum and high dimensional entanglement.Read more
Author:Boguslavsky, LDate:Oct 2010In this work, High Efficiency Particulate Air (HEPA) Filters are designed to keep small harmful particles from entering a control environment or to prevent them from escaping. Nonwoven fabrics for filtration application were produced from ...Read more
Author:Ngcobo, Sandile; Forbes, A; Ait-Ameur, KDate:Jul 2012The transformation of a single mode TEM00 Gaussian beam by forcing the laser to operate into a symmetrical single mode higher order TEMp0 Laguerre Gaussian beam intensity distribution is very useful in improving and substantially increasing ...Read more
Author:Ballav, N; Maity, Arjun; Mishra, SBDate:Aug 2012Glycine doped polypyrrole (PPy-gly) adsorbent was prepared via in situ polymerization of pyrrole (Py) monomer in the presence of glycine (gly) for the removal of Cr(VI). Formation of PPy homopolymer and inclusion of gly in the PPy matrix were ...Read more
Author:Dada, M; Popoola, P; Adeosun, S; Mathe, Ntombizodwa RDate:Sep 2019In the aerospace industry, materials used as modern engine components must be able to withstand extreme operating temperatures, creep, fatigue crack growth and translational movements of parts at high speed. Therefore, the parts produced must ...Read more
Author:Dada, M; Popoola, P; Adeosun, S; Mathe, Ntombizodwa RDate:Sep 2019In the aerospace industry, materials used as modern engine components must be able to withstand extreme operating temperatures, creep, fatigue crack growth and translational movements of parts at high speed. Therefore, the parts produced must ...Read more