Author:Belle, BKDate:Feb 2002This report describes research project COL 807 which was formulated to find ways of keeping down the dust in thick-seam wall operations to concentration levels of less than 5 mg/m3 and to minimize the dust exposure of workers while maintaining ...Read more
Author:Bembe, M; Dludla, Angeline G; Ngwenya, D; Mekuria, FissehaDate:Jul 2015DVB-NGH (Digital Video Broadcasting-Next Generation Handheld) is the next generation technology for mobile TV broadcasting. It integrates both satellite and terrestrial techniques, which is vital in supporting rich media content for mobile ...Read more
Author:Wall, K; Manus, A; Moodley, K; Boshoff, L; Ottermann, ADate:May 2008This paper describes the steady progress that the Department of Water Affairs and Forestry (DWAF) has been making with formulating a national water services infrastructure asset management (IAM) strategy. A "scan" of the state of water services ...Read more
Author:Cummings, FDate:Nov 2009This presentation gives an overview of the background of dye solar cell research, specifically the CSIR dye solar cell research, and collaborations and links.Read more
Author:Cummings, FDate:09 Nov 2009This presentation gave an overview of the background of dye solar cell research, specifically the CSIR dye solar cell research, and collaborations and links.Read more
Author:Le Roux, Lukas JDate:Feb 2006Various institutions are doing research on photovoltaics in South Africa. Although the CSIR is the only one that does research on DSC's there is significant support from the different universities. In the presentation a short overview of the ...Read more
Author:Le Roux, Lukas J; Hietkamp, S; Cummings, FDate:Nov 2008An attractive and cheaper alternative to siliconbased photovoltaic (PV) cells for the conversion of solar light into electrical energy is to utilise dyeadsorbed, large-band-gap metal oxide materials such as TiO2 to absorb the solar light. ...Read more
Author:Le Roux, Lukas J; Arendse, C; Hietkamp, S; Knoesen, DDate:Jul 2005A novel system that harnesses solar energy is the nano-crystalline TiO dye-sensitised solar cell (DSC), in conjunction with several new concepts, such as nanotechnology and molecular devices. An efficient and low-cost cell can be produced by ...Read more
Author:Le Roux, Lukas J; Arendse, C; Hietkamp, SDate:Feb 2006As fuel sources become depleted, there is an increasing need to turn to alternative sources of energy. Of particular interest, especially in southern Africa, is solar energy, since it is clean and abundant. A novel system that harnesses solar ...Read more
Author:Price, Catherine S; Moodley, Deshendran; Pillay, Anban WDate:Sep 2018Sugarcane growers usually burn their cane to facilitate its harvesting and transportation. Cane quality tends to deteriorate after burning, so it must be delivered as soon as possible to the mill for processing. This situation is dynamic and ...Read more
Author:Shoke, Lerato; Mutombo, Kalenda; Snyman, Izak M; Sono, Tleyane JDate:Oct 2016This paper deals with characterisation of blast loading to a mild steel plate (SUPRAFORM TM380) and titanium alloy (Ti6Al4V). Circular plates 3 mm thick with diameter 306 mm were impulsively loaded by a 20 g PE4 cylindrical charge at a standoff ...Read more
Author:Kareem, TR; Matthee, Karel W; Chan, HA; Ntlatlapa, Ntsibane SDate:Sep 2008This paper investigates the challenges involve in designing a dynamic channel assignment (DCA) scheme for wireless mesh networks, particularly for multi-radio systems. It motivates the need for fast switching and process coordination modules ...Read more
Author:Nobre, AM; Musango, JK; de Wit, MP; Ferreira, JGDate:Feb 2008The objective of this report is to conceptualize ecological and economic interactions in mariculture; to implement a dynamic ecological-economic model in order to: simulate the socio-economics of aquaculture production, simulate its effects ...Read more
Author:Mutombo, K; Siyasiya, C; Stumpf, WEDate:Dec 2013Ti6Al4V samples were isothermally compressed using a Gleeble (supTM) 1500D thermo-mechanical simulator. Differential scanning calorimetry (DSC), microstructural analyses, and thermodynamic calculations were used to investigate the sequence ...Read more
Author:Van Schalkwyk, Richard F; Smit, Johan CDate:Oct 2017In this paper the process followed in generating a high fidelity reference data set for radar cross section (RCS) modelling validation for a full-scale aircraft, is presented. An overview of two dynamic RCS measurement campaigns, involving ...Read more
Author:Mfupe, Luzango P; Masonta, Moshe T; Olwal, T; Mzyece, MDate:Sep 2012Dynamic spectrum access (DSA) technologies are increasingly viewed as a potential solution to improve overall spectral utilisation efficiency and for bridging the digital divide in the rural areas. In particular, DSA technologies have the ...Read more
Author:Hussien, HM; Katzis, K; Mfupe, Luzango PDate:Dec 2021The issue of spectrum allocation in cognitive high altitude platform wireless networks using TV White Space (TVWS) spectrum is presented in this paper. The mathematical model of spectrum allocation is given, and this model is converted into ...Read more
Author:Brown, Dane; Bradshaw, KDate:Sep 2016The face, fingerprint and palmprint feature vectors are automatically extracted and dynamically selected for fusion at the feature-level, toward an improved human identification accuracy. The feature-level has a higher potential accuracy than ...Read more
Author:Shatalov, M; Fedotov, I; Joubert, SDate:2006It was shown in 1985 by Acad. V. Zhuravlev that the angular rate of a pure vibrating mode excited in a vibratory gyroscope with spherical symmetry is proportional to an inertial angular rate of the gyroscope. The effect is three dimensional ...Read more
Author:Shatalov, M; Coetzee, CDate:May 2009The parametric electrode is normally used in the hemispherical resonator gyroscopes, operating in the whole angle regime, for maintaining of amplitudes of vibratory patterns. It is well known that due to variation of the gap between the ...Read more