Browsing Research Articles (Electrical, Electronic and Computer Engineering) by Title

Browsing Research Articles (Electrical, Electronic and Computer Engineering) by Title

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  • Land cover change detection using autocorrelation analysis on MODIS time-series data : detection of new human settlements in the Gauteng province of South Africa 
    Kleynhans, Waldo; Salmon, Brian Paxton; Olivier, Jan Corne; Van den Bergh, Frans; Wessels, K.J. (Konrad); Grobler, Trienko Lups; Steenkamp, Karen C. (Institute of Electrical and Electronics Engineers, 2012)
    Human settlement expansion is one of the most pervasive forms of land cover change in the Gauteng province of South Africa. A method for detecting new settlement developments in areas that are typically covered by natural ...
  • Land cover separability analysis of MODIS time series data using a combined simple harmonic oscillator and a mean reverting stochastic process 
    Grobler, Trienko Lups; Ackermann, Etienne Rudolph; Olivier, Jan Corne; Van Zyl, A.J. (Gusti); Kleynhans, Waldo (Institute of Electrical and Electronics Engineers, 2012-06)
    It is proposed that the time series extracted from moderate resolution imaging spectroradiometer satellite data be modeled as a simple harmonic oscillator with additive colored noise. The colored noise is modeled with ...
  • Large-scale building energy efficiency retrofit : concept, model and control 
    Wu, Zhou; Wang, Bo; Xia, Xiaohua (Elsevier, 2016-08)
    Building energy efficiency retrofit (BEER) projects are initiated in many nations and regions over the world. Existing studies of BEER focus on modeling and planning based on one building and one year period of retrofitting, ...
  • Leader-following consensus for upper-triangular multi-agent systems via sampled and delayed output feedback 
    Li, Fengjiao; Shen, Yanjun; Zhang, Daoyuan; Huang, Xiongfeng; Wang, Yan-Wu (Elsevier, 2018-01)
    In this paper, the leader-following consensus problem is investigated for upper-triangular nonlinear MASs (multi-agent systems) via sampled and delayed output feedback. The sampled outputs transmitted through the communication ...
  • Limiting apparent target position in skin-return influenced cross-eye jamming 
    Du Plessis, W.P. (Warren Paul) (Institute of Electrical and Electronics Engineers, 2013)
    It is desirable to limit the apparent target to one side of a retrodirective cross-eye jammer despite the variation caused by platform skin return. The relationship between the jammer parameters and the jammer-to-signal ...
  • Line impedance measurement to improve power systems protection of the Gautrain 25 kV autotransformer traction power supply system 
    Moyo, Ndaedzo M.; Bansal, Ramesh C.; Naidoo, Raj; Sprong, Willem (Institute of Electrical and Electronics Engineers, 2019)
    Traction power systems are susceptible to service affecting electrical faults or disturbances. These may cause interruptions of the power supply to the trains, affecting systems operations and causing major delays. ...
  • Linearity improvement analysis for PAs at mm-wave frequencies 
    Valliarampath, Joe; Sinha, Saurabh (Wiley, 2014-03)
    This article presents an adaptive predistortion (APD) linearization technique to improve the linearity of millimeter-wave power amplifiers (PAs), specifically at 60 GHz. The PA and the APD were designed using the 0.13 ...
  • Linearized differential current sensor in low-voltage CMOS 
    Naude, Neil; Sinha, Saurabh (Emerald, 2017-05)
    PURPOSE : This work aims to improve upon the linearity of integrated CMOS current sensors used in switch mode power supply topologies, using a low-cost and low-voltage (less than 1.2 V) CMOS technology node. Improved sensor ...
  • Listening effort in native and nonnative English-speaking children using low linguistic single-and dual-task paradigms 
    Oosthuizen, Ilze; Picou, Erin M.; Pottas, Lidia; Myburgh, Hermanus Carel; Swanepoel, De Wet (American Speech-Language-Hearing Association, 2020-06)
    PURPOSE : It is not clear if behavioral indices of listening effort are sensitive to changes in signal-to-noise ratio (SNR) for young children (7-12 years old) from multilingual backgrounds. The purpose of this study was ...
  • Localised information fusion techniques for location discovery in wireless sensor networks 
    Abu-Mahfouz, Adnan Mohammed; Hancke, Gerhard P. (Inderscience, 2018)
    Many wireless sensor network (WSN) applications and techniques require sensor location to work correctly. Information fusion in WSNs is crucial for location discovery and many information fusion techniques have been used ...
  • Log-domain iterative sphere decoder with symbol sorting 
    Botha, P.R. (Philippus Rudolph); Maharaj, Bodhaswar Tikanath Jugpershad (South African Institute of Electrical Engineers, 2016-03)
    In this paper the authors propose modified branch and pruning metrics for the sphere decoder to facilitate the use of apriori information in the sphere decoder. The proposed sphere decoder operates completely in the ...
  • Loop-mediated isothermal aplification detection of SARS-CoV-2 and myriad other applications 
    Moore, Keith J. M.; Cahill, Jeremy; Aidelberg, Guy; Aronoff, Rachel; Bektas, Ali; Bezdan, Daniela; Butler, Daniel J.; Chittur, Sridar V.; Codyre, Martin; Federici, Fernan; Tanner, Nathan A.; Tighe, Scott W.; True, Randy; Ware, Sarah B.; Wyllie, Anne L.; Afshin, Evan E.; Bendesky, Andres; Chang, Connie B.; Dela Rosa, Richard II; Elhaik, Eran; Erickson, David; Goldsborough, Andrew S.; Grills, George; Hadasch, Kathrin; Hayden, Andrew; Her, Seong-Young; Karl, Julie A.; Kim, Chang Hee; Kriegel, Alison J.; Kunstman, Thomas; Landau, Zeph; Land, Kevin; Langhorst, Bradley W.; Lindner, Ariel B.; Mayer, Benjamin E.; McLaughlin, Lee A.; McLaughlin, Matthew T.; Molloy, Jenny; Mozsary, Christopher; Nadler, Jerry L.; D’Silva, Melinee; Ng, David; O’Connor, David H.; Ongerth, Jerry E.; Osuolale, Olayinka; Pinharanda, Ana; Plenker, Dennis; Ranjan, Ravi; Rosbash, Michael; Rotem, Assaf; Segarra, Jacob; Schurer, Stephan; Sherrill-Mix, Scott; Solo-Gabriele, Helena; To, Shaina; Vogt, Merly C.; Yu, Albert D.; Mason, Christopher E.; The gLAMP Consortium (Association of Biomolecular Resource Facilities, 2022-09)
    As the second year of the COVID-19 pandemic begins, it remains clear that a massive increase in the ability to test for SARS-CoV-2 infections in a myriad of settings is critical to controlling the pandemic and to preparing ...
  • A low complexity Hopfield neural network turbo equalizer 
    Myburgh, Hermanus Carel; Olivier, Jan Corne (Hindawi Publishing Corporation, 2013-02-08)
    In this article, it is proposed that a Hopfield neural network (HNN) can be used to jointly equalize and decode information transmitted over a highly dispersive Rayleigh fading multipath channel. It is shown that a HNN ...
  • Low complexity MLSE equalization in highly dispersive Rayleigh fading channels 
    Myburgh, Hermanus Carel; Olivier, Jan Corne (Hindawi Publishing Corporation, 2010)
    A soft output low complexity maximum likelihood sequence estimation (MLSE) equalizer is proposed to equalizeM-QAM signals in systems with extremely long memory. The computational complexity of the proposed equalizer is ...
  • Low power wide area network, cognitive radio and the internet of things : potentials for integration 
    Onumanyi, A.J. (Adeiza); Abu-Mahfouz, Adnan Mohammed; Hancke, Gerhard P. (MDPI Publishing, 2020-11-30)
    The Internet of Things (IoT) is an emerging paradigm that enables many beneficial and prospective application areas, such as smart metering, smart homes, smart industries, and smart city architectures, to name but a few. ...
  • Low-complexity filter for software-defined radio by modulated interpolated coefficient decimated filter in a hybrid farrow 
    Otunniyi, Temidayo O.; Myburgh, Hermanus Carel (MDPI, 2022-02-03)
    Realising a low-complexity Farrow channelisation algorithm for multi-standard receivers in software-defined radio is a challenging task. A Farrow filter operates best at low frequencies while its performance degrades ...
  • A low-cost inkjet-printed paper-based potentiostat 
    Bezuidenhout, Petrone; Smith, Suzanne; Joubert, Trudi-Heleen (MDPI Publishing, 2018-06-13)
    The work presented details the manufacturing of a low-cost hybrid inkjet-printed paper-based potentiostat, with the aim of creating a low-cost sensing system for rapid water quality monitoring. Potentiostats exhibit high ...
  • A low-cost open-hardware wideband multiple-input–multiple-output (MIMO) wireless channel sounder 
    Maharaj, Bodhaswar Tikanath Jugpershad; Wallace, Jon W.; Jensen, Michael A.; Linde, Louis P. (Institute of Electrical and Electronics Engineers, 2008)
    Due to the complexity of multiple-input–multipleoutput (MIMO) wireless channels, direct measurement is the main viable option for accurate characterization. Details on a new low-cost wideband channel sounder are presented, ...
  • Low-resourced communities benefit from 3D-printed electronic systems 
    Smith, Suzanne; Joubert, Trudi-Heleen (University of Pretoria, Graduate School of Technology Management, 2020)
    Imagine that a smart and interconnected sensor system can be formed digitally in an economical and environmentally friendly way. Now imagine that it can be done in South Africa, near low-resourced communities who need ...
  • Maintenance optimization incorporating lumen degradation failure for energy-efficient lighting retrofit projects 
    Ikuzwe, Alice; Xia, Xiaohua; Ye, Xianming (Elsevier, 2020-06)
    This study presents an optimal lighting maintenance plan that takes into account lumen degradation failure. In lighting retrofit projects, retrofitted lights fail over time mainly owing to burnout and lumen degradation ...