Author:Sokoya, O; Maharaj, BTDate:Aug 2009This paper presents the performance analysis of Super-Orthogonal Space-Frequency trellis coded OFDM (SOSFTC-OFDM) system using the Gauss-Chebyshev Quadrature technique. SOSFTC-OFDM is a form of the super-orthogonal space-time trellis code ...Read more
Author:Grobler, InusDate:Oct 2022Lithium Titanite Oxide (LTO) cells with the typical anode chemical compound Li4Ti5O12, are currently used in heavy transport vehicles (e.g., electric busses) and MW-size Battery Energy Storage Systems (BESS), due to their excellent performance, ...Read more
Author:Horak, E; Rust, FCDate:Aug 1992Emulsion treatment of granular bases is used mostly as a rehabilitation option in South Africa. Emulsion treated bases (ETBs) have been used on an ad hoc basis in South Africa in the past. Considerable work has gone into the mix design of ...Read more
Author:Berman, R; Benade, RDate:Dec 2015The costs of logistics in South Africa are dominated by high transportation and fuel costs which are ultimately carried by consumers. An alternative regulatory framework for governing heavy vehicles is explored as a means to not only decrease ...Read more
Author:Skosana, Vusi J; Abu-Mahfouz, Adnan MIDate:Nov 2021Video encoding is challenging in the energy-constrained environments Wireless Multimedia Sensor Networks (WMSN) operate. Among the many design considerations when developing a video encoding scheme, the first is the sparsity transform, however, ...Read more
Author:Stoltz, George G; Stoltz, MDate:Sep 2020In this paper, we model a real-time feasible rosette imager, consisting of a rosette scanner, an optical sensor and a deterministic image reconstruction algorithm. We fine-tune the rosette imager through selecting the appropriate sensor field ...Read more
Author:Arthur, Nana KK; Khodja, Malika; Moller, Heinrich; Rossouw, PierreDate:Nov 2017Metallic powders are widely used as the feedstock material for many additive manufacturing processes. Titanium alloys in particular are used in aerospace construction as an attractive alternative construction material due to the superior ...Read more
Author:Mabaso, M; Twala, B; Withey, Daniel J; Utete, SDate:Oct 2012Detection of messenger Ribonucleic Acid (mRNA) spots in fluorescence microscopy images is of great importance for biologists seeking better understanding of cell functionality. Fluorescence microscopy and specific staining methods make ...Read more
Author:Magubane, Z; Tarwireyi, P; Abu-Mahfouz, Adnan MI; Adigun, MODate:Nov 2020Nowadays physical objects have an ability to connect to the internet, process, analyze the data to the real world through the Internet of Things (IoT). These physical objects have a limited processing space, storage, memory, and bandwidth. ...Read more
Author:Nxumalo, SL; Ntlatlapa, Ntsibane S; Mudali, P; Adigun, MODate:Aug 2009A routing metric is a measure used by a routing protocol to select a best path, without a routing metric a protocol will not know which path to use to send a packet. A number of routing metrics exist for WMN, but routing still remains a problem ...Read more
Author:Olukanmi, PO; Nelwamondo, Fulufhelo V; Marwala, TDate:Jan 2019Using benchmark datasets, we study the performances of three efficient clustering algorithms which find cluster centers using a fixed number of random samples. The algorithms are also compared with two other (well-known) algorithms, namely ...Read more
Author:Engelbrecht, GN; Schmitz, P; Bean, WLDate:Sep 2009The development of performance indicators in the military is dependent on the measurability of its associated strategies. Von Clausewitz (1976) argues that nations are either at war or preparing for war. It follows that military forces should ...Read more
Author:Blaauw, Ciara; Potgieter, Monique; Cilliers, Jacques EDate:Apr 2020Commercial off the shelf antennas make it possible to perform rapid initial system tests and proof of concepts experiments. This paper reports on the antenna performance of a cost effective commercial off the shelf printed Log-periodic antenna ...Read more
Author:Roro, Kittessa TDate:Jun 2016Performance monitoring of different module technologies and system configurations of Photovoltaic (PV) systems in South Africa is rare, resulting in-few reports based on field results of PV systems installed and operated in South Africa. The ...Read more
Author:Snedden, Glen C; Dunn, Dwain I; Ingram, G; Gregory-Smith, DDate:Jun 2010The application of non-axisymmetric end walls in turbine stages has gained wide spread acceptance as a means to improve the performance of turbines in both power generation and aero-derivative applications. Non-axisymmetric end walls are aimed ...Read more
Author:Blouw, LS; Sotana, MDate:Oct 2005The purpose of this work was to obtain information on the performance of four European hemp cultivars piloted at five different sites in the Eastern Cape (South Africa), by assessing the fibre content of each cultivar grown under different ...Read more
Author:Vlok, JD; Linde, LPDate:Sep 2007This paper presents the uncoded and coded multi-user error performance results of a novel super-orthogonal (SO) 4D CDMA communication platform under AWGN and multi-path fading channel conditions. The communication platform employs a special ...Read more
Author:Rust, FC; Servas, VP; Van Der Walt, NDate:Jun 1989The use of bitumen-rubbers and other modified binders to inhibit reflection cracking, highlighted the need to investigate the phenomena of load-associated crack movement and crack reflection and the evaluation of the field performance of ...Read more
Author:Kuijpers, JS; Milev, AM; Jager, AJ; Acheampong, EDate:May 2002Seismicity causes the most severe loading conditions for tunnel support systems in deep-level South African gold mines. The design of such support systems should therefore incorporate the potential effect of seismicity on support requirements. ...Read more