Author:Kramers, AP; Butterworth, M; Biffi, M; Van Zyl, FJ; Meyer, J; Denys, N; Ramsden, RDate:Jan 2002The literature review and findings of the Tau Tona accident report (Department of
Minerals and Energy 1999), identified a single possible scenario whereby a HFC134a/lubricant/air mixture may become explosive. The mechanism involved the
escape ...Read more
Author:Botha, PB; Semmelink, CJ; Raubenheimer, J; Perry, B; Hodgkinson, ADate:Oct 2005The South African Road Agency Limited (SANRAL Northern Region) requested that more information be generated to determine the early trafficking potential of ETB, FB and Cement stabilized materials, in order to determine when the traffic could ...Read more
Author:James, S; Rosman, Benjamin S; Konidaris, GDate:Jul 2016Monte Carlo Tree Search (MCTS) is a family of directed search algorithms that has gained widespread attention in recent years, with its domain-independent nature making it particularly attractive to fields such as General Game Playing. Despite ...Read more
Author:O'Brien, TMDate:Mar 2004This report covers work conducted to evaluate the effects of specimen length on the
breaking force, in an attempt to validate or refine the discard criteria of SABS 0293: 1996. Inter alia, this included an examination of the postulation of ...Read more
Author:Engelbrecht, AD; North, Brian C; Hadley, TDDate:Sep 2007Electricity demand in South Africa is increasing at a rate of 1000 MW per year. Whilst there is increasing pressure to adopt non-fossil fuel electricity generating technologies, the abundant reserves and low cost of coal makes it the preferred ...Read more
Author:Drescher, KDate:Feb 2002The testing undertaken for this dissertation is intended to help quantify the various time-dependant deformation processes around typical deep level hard rock tabular excavations. Three mechanisms were investigated and two different hard rock ...Read more
Author:Litvin, IADate:Jul 2006Numerical calculations of the phase velocities of collective modes of a hollow waveguide at the Stokes frequency is carried out. The self- imaging of transverse structure of modes superposition (Talbot effect) is investigated. It is shown ...Read more
Author:Nkosi, M; Masuku, FDate:Jul 2016Gauteng Province has carried out two household travel surveys (HTS) – the first was carried out in 2000 and the recent one was completed in 2014. HTSs are the mainstay of transport planning and modelling, being used by the province to update ...Read more
Author:Frieslaar, I; Irwin, BDate:Sep 2015This paper investigates the power leakage of a smartcard. It is intended to answer two vital questions: what information is leaked out when different characters are used as output; and does the length of the output affect the ...Read more
Author:Steenkamp, Anton J; Nordengen, Paul A; Berman, Robert J; Kemp, LanaDate:Jun 2017Transport logistics in South Africa forms the backbone of the economy, having represented 11.8% of GDP, or R499 billion in 2016. These costs are significantly higher than many developed countries. The South African transportation sector is ...Read more
Author:Le Roux, WHDate:Jun 2007The applicability and usability of the Military Simulation Definition Language (MSDL) is investigated in context of the South African air Defence simulation community. A constructive, tactical command and control simulation environment used ...Read more
Author:Salie, F; Poluta, M; De Jager, Peta; Abbott, G; Baloyi, N; Van Reenen, Tobias HDate:Oct 2012The subject of this research project is to review and study the effectiveness of natural ventilation design assisted by a turbine
ventilator, introduced to minimise the risk of transmission of airborne pathogens like TB.Read more
Author:Lord, RT; Nel, Willem AJ; Abdul Gaffar, MYDate:May 2006Conventional Inverse Synthetic Aperture Radar (ISAR) utilises the rotational motion of a target such as a ship or an aircraft to obtain a 2-D image of the target’s radar cross section (RCS) profile from a coherent radar system. This concept ...Read more
Author:Mgangira, Martin B; Xungu, Sipho A; Giani, John CDate:Jul 2018The deterioration of the aggregate material used in road construction is of concern as it affects the overall long term stability of the road pavement and should be minimised by using durable aggregates. The paper presents proof of concept ...Read more
Author:Ndlovu, GF; Asante, JKO; Roos, WD; Hillie, KTDate:Jul 2011This work present an in situ Variable Temperature Scanning Tunneling Microscopy (VT-STM) study of the Sb/Cu(111) system studied at various temperatures. The experimental data support a structural model in which Sb atoms displace up to 1/3 of ...Read more
Author:Makamba, MDate:Mar 2016The proliferation of service technology stimulated the increase usage of services. Services are distinct, loosely coupled units of functionalities that are self-contained. These services are developed by various vendors without following ...Read more
Author:Brown, Dane; Bradshaw, KDate:May 2016There are a lack of multi-modal biometric fusion guidelines at the feature-level. This paper investigates face and fingerprint features in the form of their strengths and weaknesses. This serves as a set of guidelines to authors that are ...Read more
Author:Shatalov, MY; Joubert, SV; Voges, EDate:Jul 2007Vibrating patterns of distributed oscillating structures, subjected to rotation, also turn in the direction of inertial revolution but with different angular rates, which depend on the geometry of the structures, the number of modes, etc. ...Read more
Author:Padayachi, YR; Thambiran, Tirusha; Naidoo, M; Garland, Rebecca M; Phala, NDate:Oct 2014A study of ozone monitoring data in Johannesburg highlighted that the city is frequently affected by high ozone episodes. There is limited knowledge about the chemical and meteorological drivers of these high ozone episodes in Johannesburg. ...Read more
Author:Padayachi, YR; Thambiran, Tirusha; Naidoo, M; Garland, Rebecca M; Phala, NDate:Oct 2014A study of ozone monitoring data in Johannesburg highlighted that the city is frequently affected by high ozone episodes. There is limited knowledge about the chemical and meteorological drivers of these high ozone episodes in Johannesburg. ...Read more