Author:Nkuna, Z; Mamakoa, E; Mothetha, MDate:Dec 2014Groundwater is one of the most important natural resources globally. In Africa, particularly, groundwater has been the most reliable water supply option for meeting the daily water needs of rural communities. This is mainly due to the fact ...Read more
Author:Jansen van Rensburg, Gerhardus J; Bogaers, Alfred EJDate:Sep 2018Surrogate- or metamodels approximate and so reduce the computational cost associated with evaluating computer experiments of interest over a set of design variables. Radial Basis Functions (RBFs) are a popular metamodel choice due to its ease ...Read more
Author:Sabatta, D; Scaramuzza, D; Siegwart, RDate:May 2010In this paper the authors present a topological map building algorithm based on a Vocabulary Tree that is robust to features present in dynamic or similar environments. The algorithm recognises incorrect loop closures, not supported by the ...Read more
Author:Gummow, RJ; De Kock, A; Thackeray, MMDate:Apr 1994The rechargeable capacity of 4 V LixMn2O4 spinel cathodes (0 < x <= 1) has been improved by modifying the composition of the spinel electrode. Stable rechargeable capacities in excess of 100 mAh/g in flooded-electrolyte lithium cells can be ...Read more
Author:Fatoba, OS; Popoola, API; Fedetova, T; Pityana, Sisa LDate:Mar 2016Surface deterioration by corrosion is one of the complications associated with ageing facilities and components especially under some service environments. The research work examines the corrosion behavior of laser alloyed UNS-G10150 steel; ...Read more
Author:Herselman, PL; De Wind, HJDate:Sep 2008Asymptotically optimal coherent detection techniques yield sub-clutter visibility in heavy-tailed sea clutter. The adaptive linear quadratic detector inherently assumes spectral homogeneity for the reference window of the covariance matrix ...Read more
Author:Brown, Dane; Bradshaw, KDate:May 2016The traditional texture-based fingerprint recognition system known as FingerCode is improved in this work. Texture-based fingerprint recognition methods are generally more accurate than other methods, but at the disadvantage of increased ...Read more
Author:Ndaba, N; Pillay, AW; Ezugwu, AEDate:Jul 2018This paper proposes an improved Generalized Regression Neural Network (KGRNN) for the diagnosis of type II diabetes. Diabetes, a widespread chronic disease, is a metabolic disorder that develops when the body does not make enough insulin or ...Read more
Author:Adebiyi, DI; Fedotova, T; Pityana, Sisa L; Popoola, APIDate:Jul 2011The improvement in hardness of X12CrNiMo martensitic stainless steel laser alloyed with 99.9% pure titanium carbide, stellite 6 and two cases of premixed ratio of titanium carbide and stellite 6 [TiC (30 wt.%)- stellite 6 (70 wt.%) and TiC ...Read more
Author:Mlambo, CS; Nelwamondo, Fulufhelo V; Mathekga, Mmamolatelo EDate:Nov 2014An improved Hough Transform based fingerprint alignment approach is presented, which improves computing time and memory usage with accurate alignment parameter (rotation and translation) results. This is achieved by studying the strengths and ...Read more
Author:Paige-Green, PDate:2007Performance-related specifications for the selection of gravel materials for use in unsealed roads were developed in South Africa in the late 1980's along with associated deterioration models. The implementation of these has shown that, when ...Read more
Author:Turpie, DWF; Van der Walt, LTDate:Jul 1977An improved method for the rapid determination of non-ionic detergent in the cream, effluent and sludge from wool scouring liquors in recovered wool grease was established using dichloromethane as an extraction liquor.Read more
Author:De Villiers, DanielDate:May 2010This paper describes a unique way of setting up a mortar with minimum of extra equipment. A mortar can be set-up, by using the current mechanical mortar sight and a prismatic mirror with a bearing sensor. This concept focuses directly on one ...Read more
Author:De Villiers, DanielDate:Oct 2008Mortars will still play an important roll in modern warfare. This paper describes a unique way of setting up a mortar with minimum of extra equipment. A mortar can be set-up, by using the current mechanical mortar sight and a prismatic mirror ...Read more
Author:De Villiers, JP; Cronje, J; Nicolls, FCDate:Apr 2011Inverse lens distortion modelling allows one to find the pixel in a distorted image which corresponds to a known point in object space, such as may be produced by a RADAR. This paper extends recent work using neural networks as a compromise ...Read more
Author:Maina, JW; De Beer, MorrisDate:Nov 2008This paper presents evaluation of road pavement response under the loading of typical dual and single truck tyre configurations. Locally developed Stress-In-Motion (SIM) technology was used to quantify three-dimensional (3D) shapes of the ...Read more
Author:Chamier, J; Crouch, AMDate:Jan 2012The spectrophotometric change of amercury (II) (Hg2+) selective small molecule chemosensor has been successfully converted into a photovoltaic response upon ligating Hg2+. The photon excitation was followed by charge separation facilitated ...Read more
Author:De Villiers, J; Cronje, JDate:Apr 2013This work extends earlier work on the real-time photogrammetric stitching of staring arrays of high resolution videos on commercial off the shelf hardware. The blending is both further optimised for Graphics Processor Unit (GPU) implementation ...Read more
Author:Ogbodo, EU; Dorrell, DG; Abu-Mahfouz, Adnan MIDate:Mar 2019The conventional smart grid (SG) uses static radio resource allocation (RRA) techniques to allocate resources to sensor nodes and communication devices in the SG network. Cognitive radio sensor Networks (CRSNs) based SGs uses dynamic RRA for ...Read more