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    Browsing Research Articles (Electrical and Electronic Engineering) by Title

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    Now showing items 1-20 of 63

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        Afrikaans and Dutch as closely-related languages : a comparison to West Germanic languages and Dutch dialects 

        Heeringa, Wilbert; De Wet, Febe; Van Huyssteen, Gerhard B. (University of Stellenbosch, Department of General Linguistics, 2015)
        Following Den Besten’s (2009) desiderata for historical linguistics of Afrikaans, this article aims to contribute some modern evidence to the debate regarding the founding dialects of Afrikaans. From an applied perspective ...
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        Analysis of template-based detection algorithms for inshore Bryde’s whale short pulse calls 

        Ogundile, Olayinka O.; Versfeld, Daniel J. J. (Institute of Electrical and Electronics Engineers, 2020)
        Marine mammals use sound for communication and echolocation within their ecosystems. The detection of these sounds is an important aspect of signal processing, such that we can estimate the spatial position and direction ...
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        Analytical modeling of surface-mounted and consequent-pole linear vernier hybrid machines 

        Botha, Christoff D.; Kamper, Maarten J.; Wang, Rong-Jie; Chama, Abdoulkadri (Institute of Electrical and Electronics Engineers, 2021)
        ENGLISH ABSTRACT: This paper presents an analytical method for modeling the no-load air gap ux density of a surface-mounted and a consequent-pole linear Vernier hybrid machine (LVHM). The approach is based on simple ...
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        Animal-borne behaviour classification for sheep (Dohne Merino) and rhinoceros (Ceratotherium simum and diceros bicornis) 

        Le Roux, Solomon Petrus; Marias, Jacques; Wolhuter, Riaan; Niesler, Thomas (BioMed Central, 2017-11-21)
        Background: The ability to study animal behaviour is important in many fields of science, including biology, behavioural ecology and conservation. Behavioural information is usually obtained by attaching an electronic ...
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        Biosensors for the detection of Escherichia coli 

        Maas, M. B.; Perold, W. J.; Dicks, L. M. T. (South African Water Research Commission, 2017-10)
        ENGLISH ABSTRACT: The supply of safe potable water, free from pathogens and chemicals, requires routine analyses and the application of several diagnostic techniques. Apart from being expensive, many of the detection methods ...
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        Capacitive seat sensors for multiple occupancy detection using a low-cost setup 

        Zeeman, Adriaan Siebrits; Booysen, Marthinus J.; Ruggeri, Giuseppe; Lagana, Bruno (IEEE -- Institute of Electrical and Electronics Engineers, 2013-02)
        The Minibus public transportation sector and road safety remains a significant challenge in Africa. We propose a low cost system to monitor the taxi industry and encourage safe driving. A low cost capacitive proximity ...
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        Classified atmospheric states as operating scenarios in probabilistic power flow analysis for networks with high levels of wind power 

        Dalton, Amaris; Bekker, Bernard; Koivisto, Matti Juhani (Elsevier, 2021)
        ENGLISH ABSTRACT: Large-scale atmospheric circulation patterns are the primary drivers of wind power variability on power networks at timescales of hours to days. This paper proposes a methodology that allows power system ...
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        Clustering acoustic segments using multi- stage agglomerative hierarchical clustering 

        Lerato, Lerato; Niesler, Thomas (Public Library of Science, 2015)
        Agglomerative hierarchical clustering becomes infeasible when applied to large datasets due to its O(N2) storage requirements. We present a multi-stage agglomerative hierarchical clustering (MAHC) approach aimed at large ...
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        Combining speed and acceleration to detect reckless driving in the informal public transport industry 

        Zeeman, A. S.; Booysen, Marthinus J. (IEEE -- Institute of Electrical and Electronics Engineers, 2013-10)
        The informal transport industry in Sub-Saharan Africa is notoriously dangerous, leading to many fatalities annually. This paper presents an innovative way of monitoring driver behaviour, in real-time, by taking into ...
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        Compact conical line power combiner design using circuit models 

        Beyers, Ryno D.; De Villiers, Dirk I. L. (Institute of Electrical and Electronics Engineers, 2014)
        ENGLISH ABSTRACT: A simple equivalent circuit model with empirical equations describing the peripheral feeding ports of conical line power combiners is presented. The model allows the entire structure to be designed using ...
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        Compact high-power broadband absorptive filters using slotted waveguide harmonic pads 

        Stander, Tinus; Meyer, Petrie; Van der Walt, Pieter Willem (The Institution of Engineering and Technology - IET, 2014-06)
        A compact high-power broadband absorptive filter is designed by cascading a slotted waveguide harmonic pad with a wide stop-band reflective filter. Absorption is achieved by coupling a surface current standing wave to ...
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        A comparative evaluation of the impact of average speed enforcement (ASE) on passenger and minibus taxi vehicle drivers on the R61 in South Africa 

        Akoku Ebot Eno Akpa, Nelson; Booysen, M. J.; Sinclair, M. (South African Institution of Civil Engineering, 2016)
        Average speed enforcement (ASE) is an emergent alternative to instantaneous speed limit enforcement to improve road safety, and is used to enforce an average speed limit over a road segment. This paper presents a study on ...
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        A computationally inexpensive energy model for horizontal electric water heaters with scheduling 

        Nel, P. J. C.; Booysen, M. J.; Van der Merwe, A. B. (2016-03)
        ENGLISH ABSTRACT: Electric water heaters (EWHs) remain one of the main contributors to energy consumption in countries where they are used. EWH models serve as a step towards achieving optimised control, and can also ...
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        Constant radiation characteristics for log-periodic dipole array antennas 

        Lehmensiek, Robert; De Villiers, Dirk I. L. (Institute of Electrical and Electronics Engineers, 2014)
        Given the correct terminal voltages on each element of a log-periodic dipole array constant radiation characteristics can be achieved for an omni-directional radiation pattern. In this communication it is shown that this ...
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        Cross-coupling inductance parameter estimation for more accurate performance evaluation of wound-field flux modulation machines 

        Mabhula, Mkhululi; Akuru, Udochukwu B.; Kamper, Maarten J. (MDPI, 2020-10-22)
        ENGLISH ABSTRACT: In this paper, a proposed numerical frozen permeability modeling procedure is fully derived to accurately estimate the parameters of two variants of wound-field flux modulation machines (WF-FMMs) namely: ...
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        Detection of reckless driving in the Sub-Saharan informal public transportation system using acceleration-sensing telematics 

        Schietekat, Justin M.; Booysen, Marthinus J. (IEEE -- Institute of Electrical and Electronics Engineers, 2013-07)
        Many lives are lost annually in Sub-Saharan Africa’s unique and vibrant informal public transportation system due to accidents caused by reckless driving, fatigue, and illegal overloading. Fleet management has been used ...
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        An efficient beam steerable antenna array concept for airborne applications 

        Aliakbarian, Hadi; Van der Westhuizen, Ewald; Wiid, Riaan; Volskiy, Vladimir; Wolhuter, Riaan; Vandenbosch, Guy A. E. (Radioengineering Society, 2014)
        Deployment of a satellite borne, steerable antenna array with higher directivity and gain in Low Earth Orbit makes sense to reduce ground station complexity and cost, while still maintaining a reasonable link budget. The ...
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        Energy perceptions in South Africa: An analysis of behaviour and understanding of electric water heaters 

        Nel, P. J. C.; Booysen, Marthinus J.; Van der Merwe, B. (Elsevier, 2016-03)
        Using data from an online national survey conducted in South Africa, this paper aims to investigate: the awareness of energy savings measures for electric water heaters (EWHs); whether or not consumers are implementing ...
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        Etched ring absorbing waveguide filter based on a slotted waveguide antenna response 

        Stander, Tinus; Meyer, Petrie (Wiley, 2008-04)
        A cascade of resistively loaded etched rings in waveguide is proposed to act as the load in a balanced FMCW Reflected Power Canceller topology using a slotted waveguide array antenna. A synthesis technique using derived ...
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        Evaluation of next-generation low-power communication technology to replace GSM in IoT-applications 

        Durand, Thomas G.; Visagie, Lourens; Booysen, Marthinus J. (Institution of Engineering and Technology, 2019)
        ENGLISH ABSTRACT: The large demand for smart metering and control, asset tracking, remote monitoring, and other applications has resulted in the emergence of innovative new internet of things (IoT) low-power wide-area ...

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