Author:Greben, JMDate:2009It has become common to describe complexity science as a new approach to many scientific questions that are less amenable to the usual “mechanistic view” of reality in science. However, we believe that the contrast implied here is to a large ...Read more
Author:Cilliers, Jacques E; Smit, JCDate:Sep 2009In previous paper the authors introduced a technique for generating mismatched pulse compression filters for linear frequency chirp signals. The technique minimizes the sum of the pulse compression sidelobes in an Lp norm sense. It was shown ...Read more
Author:Bencherif, H; Begue, NM; Diab, CR; Sivakumar, V; Keckhut, PDate:Sep 2010The present reports on the use of a multi-regression model adapted at Reunion University for temperature and ozone trend estimates. Depending on the location of the observing site, the studied geophysical signal is broken down in form of a ...Read more
Author:Engelbrecht, GN; Vos, APDate:Jul 2009This article delineates generic causes to internal conflict and proposes a coalition-forming methodology to allow for power sharing as one avenue of conflict resolution. A suitable framework to study causes to internal conflict should, at ...Read more
Author:Meijer, M-C; Dala, LDate:Jun 2015The basis of linear piston theory in unsteady potential flow is used in this work to develop a quantitative treatment of the validity range of piston theory. In the limit of steady flow, velocity perturbations from Donov’s series expansion ...Read more
Author:Dufois, F; Penven, P; Whittle, CP; Veitch, JDate:2012Using in situ sea surface temperature (SST) data and MODIS/TERRA SST, the monthly AVHRR Pathfinder (version 5.0 and 5.2) SST product was evaluated within the four main Eastern Boundary Upwelling Systems. A warm bias in the monthly Pathfinder ...Read more
Author:Rosman, Benjamin S; Ramamoorthy, S; Mahmud, MMH; Kohli, PDate:Feb 2014Different interfaces allow a user to achieve the same end goal through different action sequences, e.g., command lines vs. drop down menus. Interface efficiency can be described in terms of a cost incurred, e.g., time taken, by the user in ...Read more
Author:Sahraeian, R; Van Compernolle, D; De Wet, FebeDate:May 2014This paper demonstrates the application of Intrinsic Spectral Analysis (ISA) for low-resource Automatic Speech Recognition (ASR). State-of-the-art speech recognition systems that require large amounts of task specific training data fail to ...Read more
Author:Khomenko, MD; Mirzade, FKH; Pityana, Sisa LDate:Nov 2018The developed hydrodynamic model of laser cladding (LC) considering catchment efficiency is verified with experimental data for steel powder LC in a wide range of process parameters. The comparison of the main calculated output parameters ...Read more
Author:Snedden, Glen C; Dunn, Dwain I; Ingram, GDate:Apr 2018Non-axisymmetric endwalls in turbine stages have shown to be a robust method to improve the performance of turbines in both power generation and aero-derivative applications. Non-axisymmetric endwalls target the control of secondary flows and ...Read more
Author:Van Heerden, N; Grobbelaar, SS; Meyer, Isabella ADate:Jul 2023While the One Health perspective provides a useful approach by which to influence the complex interactions that pose a risk to the individual and collective health of humans, animals, and the environment, approaches to its operationalization ...Read more
Author:Roux, FSDate:Jun 2011The presentation on topological charge distributions in stochastic optical fields concludes that by using a combination of speckle fields one can produce inhomogeneous vortex distributions that allow both analytical calculations and numerical ...Read more
Author:Fedotov, I; Katskov, D; Shatalov, MY; Marais, JDate:2006A one-dimensional model is developed to describe atomic diffusion in a graphite tube atomizer for electrothermal atomic adsorption spectrometry. The underlying idea of the model is the solution of an inhomogeneous one-dimensional diffusion ...Read more
Author:Turner, GRDate:Sep 2014A one-dimensional electrostatic sheet model of a coaxial geometry Virtual Cathode Oscillator (VCO) is presented. The cathode is centrally located and connects to a peripherally located plate electrode to form a resonant cavity, and is thus ...Read more
Author:Nabarro, FRNDate:2003The analysis of thermal activation under shear stress in three- and even two-dimensional models presents unresolved problems. The analysis of one-dimensional models presented here may illuminate the study of more realistic models. For the ...Read more
Author:Adeleye, AT; John, KI; Adeleye, PG; Akande, Amos A; Banjoko, OODate:Sep 2021One-dimensional (1D) titanate nanotubes materials (protonated titanate nanotube (HTNT) and sodium titanate nanotube (NaTNT)) have been reported as low-cost and efficient catalytic materials in chemical syntheses for the production of biofuel ...Read more
Author:Simo, A; Mwakikunga, Bonex W; Maaza, MDate:Jun 2015In relation to hydrogen (H2) economy in general and gas sensing in particular, an extensive set of one dimensional (1-D) nano-scaled oxide materials are being investigated as ideal candidates for potential gas sensing applications. This is ...Read more
Author:Wellington, Kevin W; Qwebani-Ogunleye, T; Kolesnikova, NI; Brady, D; De Koning, CBDate:Apr 2013A commercial laccase, Suberase® from Novozymes, was used to catalyse the synthesis of 5,6-dihydroxylated benzo[b]furans and catechol derivatives. The yields were, in some cases, similar to or better than that obtained by other enzymatic, ...Read more