Author:Salehiyan, Reza; Nofar, M; Makwakwa, Dimakatso M; Ray, Suprakas SDate:Apr 2020Polymer composites featuring high dielectric constants are known to be useful materials for the development of modern transducers, piezo- and thermal-sensors, and energy storage devices. In this study, blend nanocomposites of carbon nanotube ...Read more
Author:Rossouw, NDate:Oct 2017This presentation discusses Shell’s use of science in de-risking projects. The presentation includes examples of applying science in the De-Risking process, supporting scientific research and De-Risking the Karoo Basin.Read more
Author:Pelders, Jodi L; Nelson, G; Magweregwede, FlecksonDate:Oct 2019Shift work and fatigue are health and safety risks in industry. The aim of this research was to assess contributors to fatigue of workers in the South African mining industry (SAMI), including shift cycles, commuting times and lifestyle ...Read more
Author:Slinger, JH; Hermans, LM; Cunningham, SW; Taljaard, Susan; Van Niekerk, Lara; Vreugdenhil, HDate:Jan 2013In this paper, the authors do not examine the safety of these coastal systems and the vulnerability of estuaries to flooding from the usual engineering, environmental science or public administration perspective. Instead, the authors adopt a ...Read more
Author:Schwegmann, CP; Kleynhans, W; Salmon, BP; Mdakane, LDate:Jul 2015The ability to reliably detect ships within the ocean is one of the core capabilities of Maritime Domain Awareness. Constant improvements are pursued in both computational speed and reliable responses to events by exploring new ship detection ...Read more
Author:Kleynhans, W; Salmon, BP; Schwegmann, CP; Seotlo, MVDate:Jul 2013Regular surveillance of territorial sea areas is increasingly important for coastal nations as these marine areas are a valuable economic resource (e.g. for fisheries or oil extraction). The responsibility for the administration, law enforcement, ...Read more
Author:Schwegmann, CP; Kleynhans, W; Salmon, BPDate:Jul 2014Synthetic Aperture Radar images is a proven technology that can be used to detect ships at sea which have no active transponders (commonly referred to as dark targets). Various methods have been proposed that process SAR images to monitor ...Read more
Author:Schwegmann, Colin P; Kleynhans, Waldo; Salmon, BP; Mdakane, Lizwe W; Meyer, Rory GVDate:Jul 2016The widespread access to Synthetic Aperture Radar data has created a need for more precise ship extraction, specifically in low-to-medium resolution imagery. While Synthetic Aperture Radar pixel resolution is improving for a large swaths, ...Read more
Author:Van Eeden, GSDate:1963With a view of the production of smokeless fuels, tests were conducted to determine the rate at which coal particles can be heated without disintegrating.Read more
Author:Schoonees, JS; Theron, AK; Bevis, DDate:2006The south-western shoreline along the entrance channel inside the Port of Richards Bay has experienced continued erosion. Four groynes were constructed to stabilise the shoreline. Monitoring of shoreline evolution provided valuable data on ...Read more
Author:Madala, NE; Tugizimana, F; Steenkamp, PA; Piater, LA; Dubery, IADate:Mar 2013Ultra high-performance liquid chromatography hyphenated to mass spectrometry (UHPLC-MS) technologies has been widely applied in metabolomics, and the high resolution and peak capacity thereof are only some of the key aspects that are exploited ...Read more
Author:De Beer, Morris; van der Merwe, CJ; Rohde, GTDate:Sep 1997This report contains a set of practical course notes on the Rehabilitation Design of flexible pavements in southern Africa based on extensive research by various researchers and / or practitioners in South Africa. The course is intended for ...Read more
Author:Walwyn, D; Steyn, PDate:Feb 2006Natural product research has been a major component of the CSIR's bioscience activities for its entire history, and particularly in the 1960s and 1970s. This type of work is also strongly aligned with one of the objectives of the CSIR, namely ...Read more
Author:Botha, LR; Van Heerden, SP; Prinsloo, FJDate:Sep 2006High pressure CO2 lasers are good candidates for amplifying picosecond mid infrared pulses. High pressure CO2 lasers are notorious for being unreliable and difficult to operate. In this paper a high pressure CO2 laser is presented based on ...Read more
Author:Ngcobo, Sandile; Bollig, C; Von Bergmann, HDate:Sep 2010A Nd: YVO4 modelocked laser has been constructed using a resonator designed according to the theoretical parameters. The laser produced pulses in the picosecond region with a maximum average output power of 2.8W. Passive modelocking of the ...Read more
Author:Park, R; Landman, WA; Engelbrecht, FDate:Oct 2012Using the Conformal-Cubic Atmospheric Model
(CCAM), the project shows that the largest ensemble at high resolution is the best system to predict rainfall over southern Africa. Future research will explore whether the CCAM at higher resolution ...Read more
Author:Landman, S; Engelbrecht, FA; Engelbrecht, CJ; Landman, WA; Dyson, LDate:Sep 2010The objective of this paper is to present the temporal and spatial description of precipitation forecast skill over South Africa from an ensemble of multiple model runs. Numerical forecasts from an experimental short-range multi-model ensemble ...Read more
Author:Landman, S; Engelbrecht, FA; Engelbrecht, CJ; Dyson, LL; Landman, WADate:Oct 2012Predicting the location and timing of rainfall events has important social and economic impacts. It is also important to have the ability to predict the amount of rainfall accurately. At many operational centres, such as the South African ...Read more
Author:Reddy, T; Shkedy, Z; Janse van Rensburg, C; Mwambi, H; Zuma, K; Manda, S; Debba, PraveshDate:Jan 2021The rising burden of the ongoing COVID-19 epidemic in South Africa has motivated the application of modeling strategies to predict the COVID-19 cases and deaths. Reliable and accurate short and long-term forecasts of COVID-19 cases and deaths, ...Read more
Author:Steyn, Melise; Wilms, Josefine M; Brink, W; Smit, FDate:Sep 2017This study proposes a computationally efficient solution to stream flow forecasting for river basins where historical time series data are available. Two data-driven modeling techniques are investigated, namely support vector regression and ...Read more