Author:Aderemi, BA; Puati Zau, AT; Chowdhury, SPD; Olwal, TO; Abu-Mahfouz, Adnan MIDate:Jun 2018As an energy storage device, battery technologies had evolved over the years from using a simple nickel-iron to the later superior technology of lead-acid. Furthermore, as the needs of the battery to store a large amount of energy grows, the ...Read more
Author:John, Maya J; Anandjiwala, RD; Thomas, SDate:Apr 2009The incorporation of several different types of fibres into a single matrix has led to the development of hybrid biocomposites. The behaviour of hybrid composites is a weighed sum of the individual components in which there is a more favourable ...Read more
Author:Opoku, F; Govender, Krishna; van Sittert, CGCE; Govender, PPDate:Dec 2018Over the past decade, remarkable efforts have been made to design low-cost, non-toxic, stable and efficient photocatalyst for water splitting. In the present work, an effective alternative approach to enhance hydrogen production of SrTiO(sub)3 ...Read more
Author:Tazvinga, Henerica; Dzobo, ODate:Jun 2017Renewable energy sources such as solar photovoltaic (PV) systems have been widely utilized as alternative energy sources to fossil fuels in residential areas in many countries. The PV cell output varies according to many factors including ...Read more
Author:Mowat, AGB; Malan, AG; Van Zyl, Louwrens H; Meyer, JPDate:Jun 2011A fully-coupled partitioned fluid-structure interaction (FSI) scheme is developed for sub- and transonic aeroelastic structures undergoing non-linear displacements. The Euler equations, written in an Arbitrary Lagrangian Eulerian (ALE) ...Read more
Author:Broughton, BA; Selig, MSDate:Nov 2006A methodology for the inverse design of non-lifting axisymmetric bodies in compressible flow is presented. In this method, an inverse design approach based on conformal mapping is used to design a set of airfoils in isolation. These airfoils ...Read more
Author:Szewczuk, SDate:Jun 2009To date, the South African electrification programme has been highly successful from a policy, institutional, planning, financing and technical innovation perspective. The focus on electrification and energisation, though, has moved from ...Read more
Author:Szewczuk, SDate:Nov 2008One of the South African Government’s objectives is to have universal access to electricity for all of its citizens (Mbeki, 2004). To date, the South African electrification programme has been extremely successful from a policy, institutional, ...Read more
Author:Olatinwo, DD; Abu-Mahfouz, Adnan MI; Hancke, GPDate:Mar 2021This study proposes a hybrid MAC protocol that can efficiently and effectively optimize the communication channel access of a WBAN multi-class system. The proposed protocol consists of two major processes that include the contention phase ...Read more
Author:Maodzeka, DK; Olakanmi, EO; Mosalagae, M; Hagedorn-Hansen, D; Pityana, Sisa LDate:Aug 2022Improper selection of laser powder bed fusion (LPBF) process parameters tends to result in poor quality parts which imposes limitations with respect to the mechanical performance due to process induced defects. To address this LPBF processing ...Read more
Author:Bezuidenhout, PH; Smith, S; Land, KJ; Joubert, TDate:Oct 2017The focus of this paper is the manufacturing of a low-cost hybrid paper-based potentiostat. Potentiostats exhibit high sensitivity, and can be used for a variety of applications. The results highlight the functionality of a paper-based ...Read more
Author:Rens, GB; Meyer, TADate:Jan 2015The authors propose an agent architecture which combines Partially observable Markov decision processes (POMDPs) and the belief-desire-intention (BDI) framework have several complementary strengths. The authors propose an agent architecture, ...Read more
Author:Moodley, D; Rens, GavinDate:Dec 2016This article presents an agent architecture for controlling an autonomous agent in stochastic, noisy environments. The architecture combines the partially observable Markov decision process (POMDP) model with the belief-desire-intention (BDI) ...Read more
Author:Sikhakhane, K; Rimer, S; Gololo, M; Ouahada, K; Abu-Mahfouz, Adnan MIDate:Sep 2023Ultrasound imaging uses reflected echo signals from high-frequency sound waves transmitted into a body with high water content to create images of the internal soft tissue, bone, and blood flow. Different kinds of noise are introduced during ...Read more
Author:Mboweni, IV; Ramotsoela, DT; Abu-Mahfouz, Adnan MIDate:Apr 2023The protection of critical infrastructure such as water treatment and water distribution systems is crucial for a functioning economy. The use of cyber-physical systems in these systems presents numerous vulnerabilities to attackers. To enhance ...Read more
Author:Meissner, RichardDate:Sep 2017In an anarchical global environment, the conflict potential of shared water resources has made rivers subject to high politics (i.e. security). While researchers and diplomats consider regional treaties as cooperation indicators (Wold 1995), ...Read more
Author:Chutter, FMDate:1971A general description of the study area be found in part 1(Chutter, 1970), where the fauna other than Cladocera and Copera of store-in-current, marginal vegetation and story backwater has been described. It was found that the streams and ...Read more
Author:Chutter, FMDate:1970Vaal Dam is situated on the elevated plateau which forms the interior of South Africa and is a little less than 1500 m above the level. The source of the most of the streams and rivers flowing into the dam are about 2000 m above sea level, ...Read more
Author:Adams, S; Titus, R; Pietersen, K; Tredoux, G; Harris, CDate:15 Jan 2001The Western Karoo depends entirely on groundwater for domestic and agricultural use. An understanding of the chemical evolution of the groundwater provides insight into the interaction of water with the environment and contributes to better ...Read more