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; Schulze, C; Litvin, I; Duparré, M; Forbes, ADate:Aug 2013Although many techniques are efficient at measuring optical orbital angular momentum (OAM), they do not allow one to obtain a quantitative measurement for the OAM density across an optical field and instead only measure its global OAM. Numerous ...Read more
Author:McLaren, M; Romero, J; Giovannini, D; Galvez, EJ; Padgett, MJ; Forbes, ADate:Jul 2013Typically, a Gaussian mode is used to pump a non-linear crystal to produce pairs of entangled photons. We demonstrate orbital angular momentum (OAM) entanglement when a non-fundamental mode is used to pump a non-linear crystal. An approximation ...Read more
Author:Klarman, S; Meyer, TDate:Jun 2014SQL:2011, the most recently adopted version of the SQL query language, has unprecedentedly standardized the representation of temporal data in relational databases. Following the successful paradigm of ontology-based data access, we develop ...Read more
Author:Salmon, BP; Olivier, JC; Kleynhans, W; Wessels, Konrad J; Van den Bergh, FDate:Jul 2009This paper shows that a feedforward Multilayer Perceptron (MLP) operating over a temporal sliding window of multispectral time series MODerate-resolution Imaging Spectroradiometer (MODIS) satellite data is able to detect land cover change ...Read more
Author:Nienaber, S; Funke, Nicola SDate:01 Sep 2010The South African water sector faces challenges that need to be addressed through effective policy development and implementation. Sound evidence, based on researched consideration of issues and solutions, is an important input to policy ...Read more
Author:Chakwizira, JDate:Jul 2007This paper is concerned with the road traffic congestion problems and de-congestion initiatives in the Greater Johannesburg Area (GJA). A rapid appraisal of the traffic congestion and de-congestion map and atlas of the GJA was conducted with ...Read more
Author:Gerryts, BA; Buys, AJDate:Jul 2008In investigating the link between R&D and innovation, data was used from the South African Innovation Survey of 2001 (SAIS2001). The SAIS2001 results showed that South African enterprises had a relatively high level of innovation with a low ...Read more
Author:Curle, UA; Wilkins, JD; Govender, GDate:2013Flexibility of the Council for Scientific and Industrial Research’s Rheocasting System (CSIR-RCS) and its rheo-high pressure die casting (R-HPDC) technology is again demonstrated, as with aluminium alloys, by processing and shape casting of ...Read more
Author:Anderson, FDate:Nov 2008South Africa, like other countries, faces the challenge of protecting its territory and its people from activities such as illegal border crossings, weapons trafficking, smuggling, piracy, poaching, organised crime, and terrorism on land, at ...Read more
Author:Du Plessis, MC; Olivier, JCDate:Jul 2009This paper presents a classification method which discriminates between two radar transmitters based on the received pulses. A simple radar transmitter model is presented to which a non-stationary signal classifier is applied. The classifier ...Read more
Author:Sephton, Bereneice C; Dudley, Angela LDate:Aug 2017Beams carrying orbital angular momentum (OAM) are ubiquitous in many experiments carried out today and cover a wide range of research, from surface microstructure processing to optical tweezers and communications. It follows that these beams ...Read more
Author:Gibberd, Jeremy TDate:Dec 2022Different approaches have been developed to design rainwater harvesting systems. However, these have not been widely applied in schools and are not well understood. This paper presents findings from a study in which different rainwater water ...Read more
Author:Moodley, MKDate:05 Jul 2006In Raman spectra of SWCNTs, there are many features which can be identifed with specific phonon modes and with specific Raman scattering processes that contribute to each feature. Mechanical, elastic and thermal properties are strongly ...Read more
Author:Mkwelo, Simpiwe; Nicolls, F; De Jager, GDate:Nov 2007This paper presents another approach to segmenting a scene of rocks on a conveyor belt for the purposes of measuring rock size. Rock size estimation instruments are used to monitor, optimize and control milling and crushing in the mining ...Read more
Author:Olwal, TO; Van Wyk, BJ; Djouani, K; Hamam, Y; Siarry, P; Ntlatlapa, Ntsibane SDate:Aug 2009Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in Wireless Mesh Networks (WMNs). In this paper, researchers present a range based dynamic power control for MRMC WMNs. First, WMN is represented as a set of disjoint ...Read more