Author:Haelterman, R; Bogaers, Alfred EJ; Degroote, JDate:Feb 2018In many cases, different physical systems interact, which translates to coupled mathematical models. We only focus on methods to solve (strongly) coupled problems with a partitioned approach, i.e. where each of the physical problems is solved ...Read more
Author:Bezuidenhout, PH; Smith, S; Mbanjwa, M; Land, KJ; Joubert, T-HDate:Nov 2015This study compares the performance between two commercially-available electrically conductive silver inks, Harima NPS-J nanopaste and the NBSIJ-FD02 Mitsubishi conductive ink, used in rapid prototyping of electronic circuits. The comparative ...Read more
Author:Ntshangase, Cynthia SDate:Aug 2019This paper presents the study of the permanence of the ear shape. The focus is on comparing ear recognition methods using images affected by illumination and geometrical changes. The main aim of the study is to determine the permanence of the ...Read more
Author:Mlambo, CS; Nelwamondo, Fulufhelo V; Mathekga, Mmamolatelo EDate:Aug 2014In this paper, two effective and mostly used Hough Transform (HT) based fingerprint alignment approaches are compared, namely; Local Match Based Alignment (LMBA) and Discretized Rotation Based Alignment (DRBA). The comparison was performed ...Read more
Author:Thompson, MW; Vink, ER; Fairbanks, DHK; Ballance, A; Shackleton, CMDate:May 2001The recent completion of the South African National Land-Cover Database and the Vegetation Map of South Africa, Swaziland and Lesotho, allows for the first time a comparison to be made on a national scale between the current and potential ...Read more
Author:Kleynhans, W; Salmon, BP; Olivier, JC; Wessels, Konrad J; Van den Bergh, FDate:Jul 2011In this paper, a change detection accuracy comparison is made between a recently proposed EKF method and a sliding window. Fast Fourier Transform(FFT) alternative within a spatio-temporal change detection framework. Both methods produce a ...Read more
Author:Bachoo, A; Tapamo, J-RDate:Mar 2009Identification of individuals using iris recognition is an emerging technology. Segmentation of the iris texture from an acquired digital image of the eye is not always accurate - the image contains noise elements such as skin, reflection and ...Read more
Author:Robinson, GA; Turpie, DWFDate:Oct 1978The performance and physical properties of fibre, yarn and fabric produced from a 64's quality imported merino wool, a Cape merino 64's wool and a 50/50 blend of these has been investigated.Read more
Author:Kgarume, Thabang E; Brovko, Fatheela; Van Schoor, MichaelDate:Sep 2015This paper aims to demonstrate, through practical examples and numerical modelling, the trade-off between range and resolution in ground penetrating radar (GPR) prospecting. GPR surveys can easily fail when the target and host rock properties ...Read more
Author:Moller, H; Govender, G; Stumpf, WE; Pistorius, PCDate:2010The heat treatment response of semisolid metal high pressure die cast Al-7Si-Mg alloys A356 and F357 was studied and compared. It was found that the heat treatment behaviour of alloy F357 is influenced markedly by the stability of the Mg ...Read more
Author:Cronje, J; De Villiers, JDate:Nov 2012This paper presents a comparison of several established and recent image feature-descriptors to register long wave infra-red images in the 8–14 m band to visual band images. The feature descriptors were chosen to include robust algorithms, ...Read more
Author:Cronje, J; De Villiers, JDate:Nov 2012This paper presents a comparison of several established and recent image feature-descriptors to register long wave infra-red images in the 8–14 m band to visual band images. The feature descriptors were chosen to include robust algorithms, ...Read more
Author:De Villiers, Johan PDate:Jun 2010Improving the quality of an image increases the probability, speed and accuracy with which possible objects of interest can be located and identified. Image sharpening, in particular, can correct for soft focus and strengthen the outlines of ...Read more
Author:Madikizela, C; Cornish, LA; Chown, LH; Möller, H; Arthur, Nana KKDate:Nov 2017In situ alloying is an important topic for alloy development and improvement of mechanical properties in additive manufacturing. With the scarcity of getting most commercial titanium alloys in powder form, development and qualification of ...Read more
Author:Forbes, A; Du Plessis, A; Rohwer, EGDate:Aug 2005Infra-red laser beam shaping has the inherent difficulty that simple ray tracing methods often yield anomalous results, due primarily to the propagation effects at longer wavelengths. Techniques based on diffraction theory have been developed ...Read more
Author:Kruger, Jene; Bezuidenhout, Petrone H; Joubert, T-HDate:Sep 2016Applications for diagnostic and environmental point-of-need require processes and building blocks to add smart features to disposable biosensors on low-cost substrates. A novel method for producing such biosensors is printing electronics using ...Read more
Author:John, Maya J; Thomas, S; Varughese, KTDate:Nov 2009Natural rubber was reinforced with sisal–oil palm hybrid fibers. Composites were prepared by varying the weight content of the fibers and chemical modification of the biofibers. The interaction of three different types of aromatic solvents, ...Read more
Author:Masemola, Cecilia; Cho, Moses A; Ramoelo, AbelDate:Jun 2016The leaf area index (LAI) is the key biophysical indicator used to assess the condition of rangeland. In this study, we investigated the implications of narrow spectral response, high radiometric resolution (12 bits), and higher signal-to-noise ...Read more