Author:Sokoya, O; Xu, HJ; Takawira, FDate:May 2008The performance analysis of high rate space–time trellis-coded modulation (HR-STTCM) using the Gauss–Chebyshev quadrature technique is presented. HR-STTCM is an example of space–time codes that combine the idea used in trellis coded modulation ...Read more
Author:Mathekga, HI; Oboirien, BO; Engelbrecht, A; North, Brian C; Premlal, KDate:Jul 2016In this study, the experimental results of the oxy-fluidized combustion of three different South African coals (sub-bituminous) are presented. The coal samples were denoted Coal A, B, and C. Three combustion atmospheres—air, oxy (21% O(sub2)/79% ...Read more
Author:Mnguni, S; Pragasen, M; Abu-Mahfouz, Adnan MI; Adigun, MDate:Mar 2021LoRa Networks is one of the fast-growing and promising technologies to enable communications for the Internet of Things (IoT) devices on a large scale or long-range communication. Spreading Factors (SF) plays a significant role in enabling ...Read more
Author:Ogbodo, E; Dorrell, D; Abu-Mahfouz, Adnan MIDate:Jun 2019Traditional power grids have unidirectional power flow and often information transfer, this limits their capacity for scalability, efficiency, and renewable energy integration. Smart grids (SGs) are being developed as more intelligent power ...Read more
Author:Fuku, X; Modibedi, Remegia MDate:Aug 2023BiCu2O Modified Pd/C nanocatalyst was synthesised via an eco-friendly method for fuel cell application. The obtained nanomaterials' structural composition, and electrochemical properties were investigated using chemical and physical techniques ...Read more
Author:Devi, Nishu; Ray, Suprakas SDate:Dec 2020The supercapacitor, which has been attracting growing interest in energy-storage applications since the past decade, is an alternative that evinces the potential to emulate future battery technology. To achieve this decisive task, it is ...Read more
Author:Shaibu, FE; Onwuka, EN; Salawu, N; Oyewobi, SS; Djouani, K; Abu-Mahfouz, Adnan MIDate:Nov 2023The rapid development of 5G communication networks has ushered in a new era of high-speed, low-latency wireless connectivity, as well as the enabling of transformative technologies. However, a crucial aspect of ensuring reliable communication ...Read more
Author:Sokoya, OA; Maharaj, BTDate:Sep 2007This paper investigates the performance of Super-Orthogonal Space-time Trellis Code (SOSTTC) designed primarily for non-frequency selective (i.e. flat) fading channel but now applied to a frequency selective fading channel. A new decoding ...Read more
Author:Habib, MH; Katzis, K; Mfupe, Luzango P; Ephrem, TBDate:Jul 2022The Uniform hexagonal array (UHA) sidelobe level (SLL) reduction is a crucial consideration for avoiding co-channel interference and improving Carrier-to-interference Ratio (CIR) performance in HAP wireless networks using the TVWS spectrum. ...Read more
Author:Nordengen, Paul A; Prem, H; Lyne, PWLDate:Jul 2008The South African sugar industry spends in the order of R750 million per annum on
sugarcane transport. Although rationalisation processes are in progress, innovative systems
are needed to reduce these costs even further. The current fleet ...Read more
Author:Anochie-Boateng, Joseph; Tutumluer, E; Carpenter, SHDate:2008Oil sand, or tar sand, is a generic name given to bituminous sand deposits that are rich in bitumen or asphalt content to the extent that oil can be extracted from these deposits. The typical 8% to 15% presence of bitumen in the soil composition ...Read more
Author:Anochie-Boateng, Joseph; Maina, JDate:Jan 2012The South Africa National Road Agency Limited together with the CSIR are undertaking a research and development project to support the revision of the South African mechanistic-empirical pavement design method. An important part of this project ...Read more
Author:Olaleru, SA; Kirui, JK; Wamwangi, D; Roro, Kittessa T; Mwakikunga, Bonex WDate:Jan 2020Perovskite-based solar cells (PSC) is the fastest growing solar technology to date since inception in 2009. This technology has revolutionized the photovoltaic (PV) community. While it has taken 15–42 years for traditional PV technologies to ...Read more
Author:Terblanche, APS; Opperman, LDate:Jun 1995Personal monitoring of exposure to air pollution is becoming increasingly important in health studies as a method of characterizing total exposure. We monitored the exposure of 31 teenagers to total suspended particulates (TSP) over a 12-hour ...Read more
Author:Ramabulana, T; Mavunda, RD; Steenkamp, Paul A; Piater, LA; Dubery, IA; Madala, NEDate:Mar 2016Oxidative stress is a physiological state associated with almost all biotic and abiotic stresses in plants. This phenomenon occurs due to imbalances which result from the overproduction of reactive oxygen species (ROS). Plants, however, have ...Read more
Author:Litvin, IA; Burger, L; Forbes, ADate:Oct 2007A new approach to modeling the spatial intensity profile from Porro prism resonators is proposed based on rotating loss screens to mimic the apex losses of the prisms. A numerical model based on this approach is presented which correctly ...Read more