Author:Meyer, JAM; Erasmus, Louwrence DDate:Sep 2017South African organisations that offer engineering services to the local and foreign market contribute significantly towards South Africa’s overall Gross Domestic Product (GDP). The importance of engineering services in South Africa motivates ...Read more
Author:Chindipha, SD; Irwin, Barry VWDate:Sep 2017The SQL Slammer worm is a self propagated computer virus that caused a denial of service on some Internet hosts and dramatically slowed down general Internet traffic. An observation of network traffic captured in the Rhodes University’s network ...Read more
Author:Smith, S; Naidoo, T; Nxumalo, Z; Land, K; Davies, E; Fourie, L; Marais, P; Roux, PDate:Mar 2014There is an inherent trade-off between cost and operational integrity of microfluidic components, especially when intended for use in point-of-care devices. We present an analysis system developed to characterise microfluidic components for ...Read more
Author:Vlok, JD; Olivier, JCDate:14 Aug 2012Eigenvalue distributions of Wishart matrices are given in the literature as functions or distributions defined in terms of matrix arguments requiring numerical evaluation. As a result the relationship between parameter values and statistics ...Read more
Author:Khanyile, NP; Tapamo, J-R; Dube, EDate:Aug 2012Computationally demanding applications can benefit from distributed processing. Distributed processing offers immerse computational power from collections of autonomous systems which can provide up to thousands of processing cores. Over the ...Read more
Author:Komba, Julius JDate:Jun 2013The work presented in this dissertation contributes to the current innovative research at the Council for Scientific and Industrial Research (CSIR) in South Africa, to automate the measurement of aggregate shape properties. The CSIR’s present ...Read more
Author:Komba, Julius J; Anochie-Boateng, Joseph; Steyn, WJvdMDate:Jan 2013The fundamental shape attributes of aggregates used in pavements i.e., form, angularity, and surface texture have not been accurately quantified historically, because of their irregular and non-ideal shapes. This paper presents selected results ...Read more
Author:Hernandez, JA; Gamez, A; Al-Qadi, IL; De Beer, MorrisDate:Dec 2014Three-dimensional tire–pavement contact loads of two truck tires—a new-generation wide-base tire (WBT) and a dual tire assembly (DTA)—were measured and analyzed. Extreme and typical values of tire inflation pressure (552, 690, 758, and 862 ...Read more
Author:Komba, Julius J; Maina, JW; Anochie-Boateng, Joseph; O'Connell, Johannes SDate:Jul 2012As part of the revision of the South African Pavement Design Method (SAPDM), laboratory testing was conducted to obtain the dynamic (Complex) modulus |E*| of hot-mix asphalt (HMA) samples. Dynamic modulus gives an indication of linear ...Read more
Author:Singh, GK; Claassens, JDate:Oct 2010This work addresses the inverse kinematics problem for the 7 Degrees of Freedom Barrett Whole Arm Manipulator with link offsets. The presence of link offsets gives rise to the possibility of the in-elbow & out-elbow poses for a given end-effector ...Read more
Author:Hunter, LDate:Feb 1973The breaking strength and extension of a range of wool worsted hosiery and weaving yarns were related to the average linear density of the yarn segment and that of the yarn at the point of rupture.Read more
Author:Makhari, A; Hawes, Nomashaka BN; Mturi, George AJ; Ojijo, Vincent ODate:Jul 2021Modifying bitumen is currently a common practice in South Africa. The asphalt pavement industry has seen an increase in use of different types of modifiers in an attempt to improve or extend the properties of bitumen. Common modifiers used ...Read more
Author:Sastrawan, J; Jones, C; Akhalwaya, I; Uys, H; Biercuk, MJDate:Aug 2016We introduce concepts from optimal estimation to the stabilization of precision frequency standards limited by noisy local oscillators. We develop a theoretical framework casting various measures for frequency standard variance in terms of ...Read more
Author:Goolab, Shivani; Roth, Robyn L; Crampton, Michael C; Van Heerden, HDate:Oct 2015Bacterial lipoproteins possess diverse structure and functionality, ranging from bacterial physiology to pathogenic processes. As such many lipoproteins, originating from Brucella are exploited as potential vaccines to countermeasure brucellosis ...Read more
Author:Mtsweni, Jabu SDate:12 Aug 2015oday, public-facing websites are virtually used across all different sectors by different types of organizations for information sharing and conducting core business activities. At the same time, the increasing use of mobile devices in Africa ...Read more
Author:Dudley, Angela L; Vette, C; Szameit, A; Forbes, ADate:Aug 2015Significant interest has been devoted to tailoring optical fields that transversely accelerate during propagation in the form of Airy, Weber and Mathieu beams. In this work, the authors introduce a new type of optical field that exhibits ...Read more
Author:Litvin, IA; Burger, L; Forbes, ADate:Sep 2013The self-reconstruction of superpositions of Laguerre–Gaussian (LG) beams has been observed experimentally, but the results appear anomalous and without a means to predict under what conditions this take place. In this Letter, we offer a ...Read more
Author:Luo, H; Vaivars, G; Nonjola, S; Rohwer, Mark B; Mathe, Mahlanyane KDate:Mar 2010Alkaline membrane fuel cell (AMFC) has been received increasing attention among the different types of fuel cells. Ammonium quaternized polymers such as poly (arylene ether sulfones) are being developed and studied as candidates of ionomeric ...Read more
Author:Luo, H; Vaivars, G; Agboola, B; Mu, s; Mathe, Mahlanyane KDate:Feb 2012The properties of alkali doped poly(2,5-benzimidazole) membrane with different alkali doping level for fuel cell application is reported in this work. The alkali doping level played an important role for the ion conductivity of the membrane. ...Read more
Author:Nonjola, SDate:Sep 2010Ammonium quaternized polymers such as poly (arylene ether sulfones) are being developed and studied as candidates of ionomeric materials for application in alkaline fuel cells, due to their low cost and promising electrochemical properties. ...Read more