Author:Uys, H; Biercuk, M; Van Devender, AP; Ospelkaus, C; Meiser, D; Ozeri, R; Bollinger, JJDate:Sep 2010This paper investigates the decoherence of superpositions of hyperfine states of 9Be+ ions due to spontaneous scattering of off-resonant light. It was found that, contrary to conventional wisdom, elastic Raleigh scattering can have major ...Read more
Author:Roux, FSDate:Jun 2012This report present the presentation on deconstructing quantum decoherence in atmospheric turbulence. The focus was on the classical and quantum scintillation, time vs propagation distance, current paradigm: Paterson model, infinitesimal ...Read more
Author:Ndlovu, GF; Asante, JKO; Roos, WD; Hillie, KTDate:Jul 2011An Ultra-high Vacuum Variable Temperature Scanning Tunnelling Microscope was used to study the growth mechanism of Antimony on vicinal Cu polycrystalline samples. The STM data after deposition of 0.3 ML Sb at 300°C showed localization of Sb ...Read more
Author:Cronje, JDate:Nov 2015The work in this paper address the problem of removing non-uniform motion blur from a single image. The motion vector for an image patch is estimated by using a convolutional neural network (CNN). All the predicted motion vectors are combined ...Read more
Author:Napier, JAL; Malan, DF; Sellers, E; Daehnke, A; Hildyard, MW; Dede, T; Shou, K-JDate:Dec 1998The investigation of the behaviour of the fracture zone surrounding deep level gold mine stopes is detailed in three main sections of this report. Section 2 outlines the ongoing study of fundamental fracture process and their numerical ...Read more
Author:Van Schoor, Michael; Nkosi, Nomqhele Z; Magweregwede, Fleckson; Kgarume, Thabang EDate:Aug 2022This book provides the basic know-how and guidance to effectively exploit non-destructive geophysical technologies and apply them in the underground mining environment to optimise mineral extraction and to contribute to safer mining. The ...Read more
Author:Davel, MH; Barnard, EDate:Nov 2004The authors define a novel g-to-p prediction algorithm that utilises the concept of a 'default phoneme': a grapheme which is realised as a specific phoneme significantly more often than as any other phoneme. They found that this approach ...Read more
Author:Casini, G; Meyer, T; Varzinczak, IDate:Oct 2018In this paper we present what we believe to be the first systematic approach for extending the framework for defeasible entailment first presented by Kraus, Lehmann, and Magidor—the so-called KLM approach. Drawing on the properties for KLM, ...Read more
Author:Casini, G; Straccia, UDate:2013Defeasible inheritance networks are a non-monotonic framework that deals with hierarchical knowledge. On the other hand, rational closure is acknowledged as a landmark of the preferential approach to non-monotonic reasoning. We will combine ...Read more
Author:Britz, K; Varzinczak, IDate:Jan 2013Nonmonotonic logics are usually characterized by the presence of some notion of `conditional' that fails monotonicity. Research on nonmonotonic logics is therefore largely concerned with the defeasibility of argument forms and the associated ...Read more
Author:Britz, K; Varzinczak, IDate:Jun 2012Historically, approaches to defeasible reasoning have been concerned mostly with one aspect of defeasibility, viz. that of arguments, in which the focus is on normality of the premise. In this paper we are interested in another aspect of ...Read more
Author:Moodley, K; Meyer, T; Varzinczak, IJDate:Oct 2012Classical reasoning for logic-based KR (Knowledge Representation) systems is in general, monotonic. That is, there is an assumption in these systems that there is complete information about a domain. This means that they generally cannot deal ...Read more
Author:Mashapa, MG; Chetty, N; Ray, Suprakas SDate:May 2012The effect of defect complexes on the stability, structural and electronic properties of single-walled carbon nanotubes and boron nitride nanotubes is investigated using the ab initio pseudopotential density functional method implemented in ...Read more
Author:Pratt, Lawrence E; Govender, Devashen; Klein, RDate:Nov 2021Electroluminescence (EL) images enable defect detection in solar photovoltaic (PV) modules that are otherwise invisible to the naked eye, much the same way an x-ray enables a doctor to detect cracks and fractures in bones. The prevalence of ...Read more
Author:Jule, L; Dejene, F; Ali, AG; Roro, Kittessa T; Mwakikunga, Bonex WDate:Jul 2017In this work, electron paramagnetic resonance (EPR) experiment on undoped ZnO and Al doped ZnO (AZO) nanoparticles prepared by facile sol–gel method were investigated. The effects of the Al concentration on room temperature ferromagnetic (FM) ...Read more
Author:Van den Bergh, FransDate:Mar 2018The slanted-edge method of spatial frequency response (SFR) measurement is usually applied to grayscale images under the assumption that any distortion of the expected straight edge is negligible. By decoupling the edge orientation and position ...Read more
Author:Van Wyk, Llewellyn V; Knoetze, Theunis PDate:May 2007In exploring the possibility of establishing a theory of construction for development, this paper reviews concepts of theory and theory formulation, contextualises optimal developmental modalities, describes the role of construction within ...Read more
Author:Maposa, Sibonginkosi; Duncker, Louiza C; Ngorima, ENDate:May 2012This paper presents the experiences and lessons from the Accelerating Sustainable Water Services Delivery (ASWSD) initiative that is currently being implemented in South Africa. The initiative is being spearheaded by the Department of Science ...Read more
Author:Thaba, James M; Mtsweni, Jabu SDate:Nov 2023The domains of warfare have become complex, where cyberspace is declared as the fifth domain. The complexity of cyber space is that it is borderless, and war could be launched from anywhere, and is a serious concern for national security. ...Read more