Author:Lorgat, MW; Baghai-Wadji, A; McDonald, Andre MDate:Oct 2017The performance loss due to incomplete information in denial of service (DoS) detection is quantified in this paper. Volumetric DoS detection is formulated as a signal detection problem. Two detectors are defined: the first operates without ...Read more
Author:Dumani, Nozonke; Mokoena, Refiloe; Mgangira, MartinDate:Jan 2024A sustainable concrete mix design, incorporating industrial by-products: fly ash and recycled plastic pellets, was developed, and optimized through laboratory performance-based testing trials. The primary objective of this investigation was ...Read more
Author:Karsten, AE; Singh, ADate:May 2013Laser based treatment modalities offer patients a less invasive, often localised treatment method. This has advantages of faster healing times and fewer side effects from treatment. For most laser treatments though the target site is some ...Read more
Author:Le Roux, AlizeDate:Aug 2012Land use policies have a definite and lasting impact on the way that cities grow, however, the change in land use only gets observed many years later. As such, it is difficult for policy and decision makers to observe and quantify the ...Read more
Author:Landwehr, Gregory B; Wright, Jarrad GDate:May 2018The CSIR is embarking on a project to develop a localised system operator variable renewable energy (VRE) forecasting model. Forecasting improvement requires detailed understanding of local weather anomalies and systems with best of breed ...Read more
Author:Bischof-Niemz, TDate:Nov 2015South Africa’s power system is currently under severe constraints, and at the same time, the Department of Energy is procuring new generation capacity and has already allocated a total of 8.1 GW of renewables (mainly wind & PV) for procurement ...Read more
Author:Smith, Andrew C; Foko, Thato E; Van Deventer, ADate:Nov 2008Earlier studies discovered that South African testees from community schools do not have the required skills to participate in tertiary education and also lack many of the basic skills to compete successfully in certain sectors of society. ...Read more
Author:Nel, M; Theron, BertusDate:Sep 2009A fibre optic power meter calibration has several uncertainty contributors associated with it. In order to assign a realistic uncertainty to the calibration result it is necessary to realistically estimate the magnitude of each uncertainty ...Read more
Author:Nkosi, MC; Lysko, Albert ADate:Sep 2015Understanding radio wave propagation is important for the design and implementation of reliable wireless communication systems. This paper describes transmission coefficient quantification. Measurements were done by using two antennas placed ...Read more
Author:Seleka, T; Pityana, Sisa L; Ulbrich, M; Rampedi, LDate:Nov 2007An AISI 420 martensitic stainless steel, 0.6 mm thick was melted with a 4.4 Kw continuous wave Nd: Yag laser in order to induce a certain proportion of retained austenite in a matrix. The volume percentage of the retained austenite in the ...Read more
Author:Bachoo, AK; De Villiers, JP; Nicolls, F; Le Roux, Francois PJDate:Apr 2011This work aims to evaluate the improvement in the performance of tracking small maritime targets due to real-time enhancement of the video streams from high zoom cameras on pan-tilt pedestal. Due to atmospheric conditions these images can ...Read more
Author:De Villiers, JP; Bachoo, AK; Nicolls, FC; Le Roux, FPJDate:Apr 2011Omnidirectional camera systems are used to supplement RADAR in tracking small craft close in to the ship in a maritime environment. They can simultaneously track multiple targets to provide a more complete situational awareness. Due to their ...Read more
Author:Hanslo, Ridewaan; Vahed, Anwar; Mnkandla, EDate:Jan 2020Scrum provides many benefits to organizations requiring a project management framework for complex adaptive problems. Some of these benefits include improved teamwork, improved time to market, and a noticeable decrease in software defects. ...Read more
Author:Mabaso, M; Twala, B; Withey, Daniel JDate:Sep 2013Tracking of multiple bright particles (spots) in fluorescence microscopy image sequences is seen as a crucial step in understanding complex information in the cell. However, fluorescence microscopy generates high a volume of noisy image data ...Read more
Author:Copeman, JH; Von Wolff, WTEDate:1968When certain component, in a mixture with other components, has to be determined in a sample, one cannot directly compare line intensities of the pure component, proposed under identical conditions as the sample, because of the absorption ...Read more
Author:Jamison, Kevin A; Rossouw, Pieter S; Miles, EliznaDate:Sep 2017When a new store is integrated with an aircraft, it is necessary to verify that it separates safely for all possible release and emergency jettison scenarios. A large number of store separation analyses are required to comply with this ...Read more
Author:Jamison, Kevin A; Rossouw, Pieter S; Miles, EliznaDate:Sep 2017When a new store is integrated with an aircraft, it is necessary to verify that it separates safely for all possible release and emergency jettison scenarios. A large number of store separation analyses are required to comply with this ...Read more
Author:Dudley, Angela L; Litvin, IA; Forbes, ADate:Mar 2012In this work we derive expressions for the orbital angular momentum (OAM) density of light, for both symmetric and nonsymmetric optical fields, that allow a direct comparison between theory and experiment. We present a simple method for ...Read more
Author:Abia, ALK; Ubomba-Jaswa, Eunice; Genthe, Bettina; Momba, MNBDate:Oct 2016Although higher microbial concentrations have been reported in sediments than in the overlying water column, most quantitative microbial risk assessment (QMRA) studies have not clearly indicated the contribution of sediment-borne pathogens ...Read more