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: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: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: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: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: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: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
Author:Bischof-Niemz, TDate:Dec 2016Annual new-build limits for solar PV and wind are constant in absolute terms but decrease relative to the size of the power system. Today: Both leading and follower countries install much more new solar PV capacity per year than what South ...Read more
Author:Chauke, L; Möller, H; Curle, UA; Govender, GDate:Jul 2013Anodising of aluminium alloys can be used to improve corrosion resistance during application or it can be simply for decorative purposes. In this research, anodising of 6111 (Cu containing) and 6082 (without Cu) alloys produced by Rheo-High ...Read more
Author:Mgabile, T; Msiza, IS; Dube, EDate:Oct 2012This manuscript presents a supervised machine learning approach in the identification of network attacks on a fingerprint biometric system. To reduce the problem of malicious acts on a biometric system, this manuscript proposes an intrusion ...Read more
Author:Botes, FH; Leenen, Louise; De La Harpe, RDate:Jun 2017In the ashes of Moore’s Law, companies have to acclimatise to the vast increase of data flowing through their networks. Reports on information breaches and hackers claiming ransom for company data are rampant. We live in a world where data ...Read more
Author:Engelbrecht, FA; Ndarana, T; Morioka, Y; Behera, S; Thatcher, M; McGregor, JLDate:Sep 2015The impact of time-varying Antarctic stratospheric ozone on southern African summer climate variability is explored through atmospheric global circulation model (AGCM) sensitivity experiments. A control experiment following the design of the ...Read more
Author:Olwal, TO; Chuku, PN; Lysko, Albert ADate:Mar 2021Antennas are a critical component in any wireless link. The significance of their role continues to grow, together with the rise of machine-to-machine (M2M) communications and telecommunications starting to move from the fourth generation ...Read more
Author:Olwal, TO; Chuku, PN; Lysko, Albert ADate:Mar 2021Antennas are a critical component in any wireless link. The significance of their role continues to grow, together with the rise of machine-to-machine (M2M) communications and telecommunications starting to move from the fourth generation ...Read more
Author:Padayachi, Yerdashin R; Thambiran, TirushaDate:Oct 2016The anthropogenic heat fluxes (AHF) from buildings, transport and people are an essential component of the urban climate within cities. Presently limited information on the AHF in South African cities exists. This study quantifies the AHF in ...Read more
Author:Engelbrecht, FA; Landman, WA; Ndarana, TDate:Oct 2014This paper explores the hypothesis that the more realistic depiction of the atmosphere's ability to absorb and release radiation in atmospheric model simulations, through the more realistic representation of the time-varying concentrations ...Read more