Author:Lysko, Albert ADate:Mar 2010A novel method has been devised where one set of higher order polynomial-based basis functions can be applied over several wire segments, thus permitting to decouple the number of unknowns from the number of segments, and so from the geometrical ...Read more
Author:Lysko, Albert ADate:Mar 2010A novel method has been devised where one set of higher order polynomial-based basis functions can be applied over several wire segments, thus permitting to decouple the number of unknowns from the number of segments, and so from the geometrical ...Read more
Author:Mofolo, M; Lysko, Albert A; Clarke, WDate:Sep 2010This paper presents a method of electronic beam steering for a smart antenna system based on a switched parasitic array. The antenna system is made up of circular array of half wave dipoles, with four parasitic elements positioned equidistantly, ...Read more
Author:Denneman, EDate:Aug 2010Fatigue cracking is an important mode of failure in hot-mix asphalt (HMA). As part of the revision of the South African pavement design method (SAPDM) a need was identified to assess the fracture toughness of HMA in terms of fracture energy. ...Read more
Author:Taljaard, Susan; Lemley, DA; Van Niekerk, LaraDate:Aug 2022Situated at the land-sea interface, estuaries are susceptible to land- and sea-based sources of pollution. Despite growing scientific evidence of deterioration in water quality, quantitative methods to translate such information in support ...Read more
Author:Brill, G; Anderson, P; O’Farrell, PatrickDate:May 2017This study contributes to both the methodological and empirical literature by developing an integrative approach to assessing temporal and spatial change in riparian ecosystem service delivery by drawing on available and diverse data sets. ...Read more
Author:Spottiswoode, SM; Milev, AMDate:Aug 2002Use of the mine layout design criteria of ERR (Energy Release Rate), APS (Average Pillar Stress) and ESS (Excess Shear Stress) have not provided a good control of seismicity. It has become apparent that more complex models of rock mass behaviour ...Read more
Author:Herselman, Martha E; Botha, AdèleDate:Dec 2016This section will address the methodology that was applied to develop the South African Digital Health Innovation Ecosystem (DHIE). Each chapter under Section B represents a specific phase in the methodology.Read more
Author:Nordengen, Paul A; Steenkamp, Anton JDate:Nov 2016This paper describes the methodology that is being used for the performance assessment of PBS vehicles in terms of road structures as part of the PBS pilot project in South Africa. The assessment approach has evolved from the standard “bridge ...Read more
Author:Debba, Pravesh; Carranza, E; Stein, A; Van der Meer, FDate:Mar 2010This research describes a quantitive methodology for deriving optimal exploration target zones based on a probalistic mineral prospectivity map.The Rodalquilar mineral district is located in the Sierra del Cabo de Gata volcanic field, in the ...Read more
Author:Kemp, Lana; Steenkamp, Anton J; Nordengen, Paul ADate:Oct 2018Heavy vehicle traffic volumes continue to increase globally, causing the accelerated deterioration of pavement structures. This paper introduces an innovative methodology that quantifies road consumption attributed to heavy vehicles on a paved ...Read more
Author:Schutte, IC; Page, OA; Dehlen, GLDate:Mar 1999Road traffic collision result in both human loss and cost to the company. Government and other role players addressing this problem require reliable information on the cost of collisions to the economy. Collisions costs are also used in the ...Read more
Author:Thompson, M; Marneweck, G; Bell, S; Kotze, D; Muller, JL; Cox, D; Clark, REDate:Mar 2002In order to manage and conserve wetland resources effectively in South Africa, it is essential to have accurate information on their location and boundaries. The need for an inventory of this nature has also been accentuated through various ...Read more
Author:Debba, PraveshDate:Jul 2009This presentation presented to the SASA Eastern Cape Chapter at Rhodes University posses two questions: (a) how could estimates of abundances of spectrally similar iron-bearing oxide/hydroxide/sulfate minerals in complex mixtures be obtained ...Read more
Author:Simpkins, MJDate:Nov 1976This report is published on behalf of the South African Committee for Solid Wastes which in turn advises the National Committee for Environmental Sciences on problems concerned with Solid Wastes in South Africa. It is particularly concerned ...Read more
Author:Kruger, OADate:2000In angle calibrations the uncertainty contributions of the autocollimator and index table are easily estimated as these uncertainties are well documented, but it is more difficult to determine the uncertainties associated with flatness ...Read more
Author:Greeff, MDate:01 Sep 2010Decision making - with the goal of finding the optimal solution - is an important part of modern life. For example: In the control room of an airport, the goals or objectives are to minimise the risk of airplanes colliding, minimise the time ...Read more
Author:Kemp, J; Bessinger, M; Lück-Vogel, MelanieDate:Oct 2014Flood extent mapping is an important disaster response tool made possible by synthetic aperture radar (SAR). The ability to rapidly assess ground conditions during flood events, independent of cloud cover or time of day, makes SAR imagery ...Read more
Author:Archibald, S; Nickless, A; Scholes, RJ; Schulze, RDate:Nov 2010In southern African savannas, grass production, and therefore the annual extent of fire, is highly dependent on rainfall. This response has repeatedly been noted in the literature but authors used different input variables and modelling ...Read more