Author:Yong Song, H; Salehiyan, Reza; Li, X; Hak Lee, S; Hyun, KDate:Nov 2017In this study, the effects of cone-plate (C/P) and parallel-plate (P/P) geometries were investigated on the rheological properties of various complex fluids, e.g. single-phase (polymer melts and solutions) and multiphase systems (polymer blend ...Read more
Author:Dada, M; Popoola, P; Mathe, Ntombizodwa R; Pityana, Sisa L; Adeosun, S; Aramide, ODate:Jun 2021Corrosion is a conservational occurrence that has a large economic impact on most metals and its alloys because it destroys and deteriorates most materials by an electrochemical process through the reaction of these materials with the ...Read more
Author:Strauss, Hencharl J; Bollig, C; Von Bergmann, M; Esser, MDDate:Jun 2009Aimed to compare the two materials directly under diode-end-pumping by performing thermal lens measurements during lasing with a HeNe probe beam using identical low-doped (0.15%), 4x4x18 mm3 crystals. Our setup was such that we could separately ...Read more
Author:Manickchand, Kaveer; Strydom, Johannes J; Mishra, AKDate:Sep 2017The goal of this study was to research TOA exclusive tracking and deinterleaving algorithms applied to radar emitters in an EW environment for application on FPGA-based DRFM platforms. In this paper sequence search (SS), TOA difference ...Read more
Author:Hoosain, Shaik E; Pityana, Sisa L; Tlotleng, Monnamme; Legopeng, TDate:Nov 2017Titanium aluminides (TiAl) are acknowledged as promising high temperature structural materials due to their high melting point, high strength to density, high elastic modulus and high creep strength. Due to their low ductility, it is difficult ...Read more
Author:Govender, G; Ivanchev, L; Hope, D; Burger, H; Kunene, GDate:Jul 2007Aluminium alloys are used extensively in the automotive and aerospace industries. The development semi-solid forming as manufacturing process has offered the opportunity to HPDC cast complex, near net shape, high volume, and high integrity ...Read more
Author:Masikane, M; Chikwanda, HK; Sigalas, IDate:Jul 2015Over the past years, the blended elemental powder metallurgy (PM) approach has been identified as one of the most promising strategies to reduce the cost of titanium-based components. However, oxygen pick-up, inhomogeneity of the microstructure ...Read more
Author:Motaung, DE; Malgas, GF; Arendse, CJDate:Jan 2010In this report the effect of solvent to control the degree of mixing of the polymer and fullerene components, as well as the domain size and charge transport properties of the blends were investigated in detail using P3HT:C60 films. The polymer ...Read more
Author:Adekunle, AS; Ozoemena, KIDate:Dec 2010This study described the decoration of edge plane pyrolytic graphite electrode (EPPGE) with synthesised cobalt and cobalt oxide nanoparticles. The modified electrode was characterised by techniques such as TEM, FESEM, XRD, EDS, cyclic voltammetry ...Read more
Author:High, C; Shackleton, CMDate:Mar 2000Rural inhabitants make considerable use of wild resources from communal areas around their settlements, as well as from arable and residential plots. These wild resources compete with the main crops planted in arable plots and home gardens, ...Read more
Author:Steenkamp, Anton J; De Saxe, CC; Kienhöfer, F; Kemp, LanaDate:Jul 2021The paved road network is a critical asset to any country and its economy. South Africa's paved road network has an estimated value in excess of R2 trillion. This asset is threatened by a backlog in maintenance of more than R416.6 billion, ...Read more
Author:Basson, WD; Davel, MHDate:Nov 2012This paper compares the recognition accuracy of a phoneme-based automatic speech recognition system with that of a grapheme-based system, using Afrikaans as case study. The first system is developed using a conventional pronunciation dictionary, ...Read more
Author:Simpson, LA; Botai, J; De Koning, E; Sivakumar, VDate:Sep 2011This study aims to find a correlation between lightning polarity and microphysical properties of a storm cloud, for events where large amounts of lightning damage have occured and/or there has been a reported lightning-related fatality.Read more
Author:Loots, L; Davel, M; Barnard, E; Niesler, TDate:Nov 2009Phoneme-to-phoneme (P2P) learning provides a mechanism for predicting the pronunciation of a word based on its pronunciation in a different accent, dialect or language. The authors evaluate the effectiveness of manually-developed as well as ...Read more
Author:Grant, T; Burke, Ivan D; Van Heerden, Renier PDate:Mar 2012The purpose of this paper is to find, formalise, and compare models of the offensive cyber operations process available in the open scientific literature. Seven models were sufficiently well described for formalisation using Structured Analysis ...Read more
Author:Grant, T; Burke, Ivan D; Van Heerden, Renier PDate:Oct 2015Based on the idea that offensive cyber operations should be studied and merge from the darkness in which they typically hide, Grant and his colleagues embarked on a research program to explore the potential answers to the question, " What ...Read more
Author:Mashaba, Nikiwe P; Griffith, DJDate:Nov 2020Turbulence is regarded as one of the most deleterious effects on imaging systems. The CSIR have an optical test facility, used to test image quality of surveillance systems, however, the temporal distribution of the near field turbulence is ...Read more
Author:Cho, Moses A; Naidoo, Laven; Mathieu, Renaud SA; Asner, GP; Ramoelo, AbelDate:Nov 2012Several classification techniques have been used to map vegetation communities or land cover types using remote sensing data including maximum likelihood (ML), discriminant analysis and spectral angle mapper classifiers. ML classifier is a ...Read more