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Browsing Research Articles by Title

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  • Reference frame independent twin field quantum key distribution with source flaws 
    Sekga, Comfort; Mafu, Mhlambululi (IOP Publishing Ltd, 2021-04-14)
    The trade-off between distance and secret key generation rate remains one of the major challenges in the practical implementation of quantum key distribution (QKD). As a solution, a twin field QKD protocol was proposed by ...
  • Relative gottlieb groups of embeddings between complex grassmannians 
    Gatsinzi, Jean Baptiste (Hindawi Limited, 2021-11-15)
    Let Grk,n be the complex Grassmann manifold of k-linear subspaces in ℂn. We compute rational relative Gottlieb groups of the embedding i:Grk,n Grk,n+r and show that the G-sequence is exact if r≥kn-k.
  • Repository assessment AAU/BIUST open access week 2020 
    Lebele, Ayanda Agnes (Botswana International University of Science and Technology, 2020-10-20)
    To map the Botswana IR case while also soliciting for global support in advocacy for open access of Botswana, Africa’s research output.
  • Review of dual axis solar tracking and development of its functional model 
    Mpodi, Emmanuel Karabo; Tjiparuro, Zeundjua; Matsebe, Oduetse (Elsevier B.V., 2019)
    The use of solar energy is in the upswing due to its environmental friendliness and abundance. That notwithstanding, efficiency remains a major problem in many of the applications. Mitigation is normally in the form of ...
  • A review of ironmaking by direct reduction processes: quality requirements and sustainability 
    Ramakgala, Comfort; Danha, Gwiranai (Elsevier B.V., 2019)
    Currently the majority of the world’s steel is produced through either one of the two main routes; the integrated Blast Furnace – Basic Oxygen Furnace (BF – BOF) route or the Direct Reduced Iron - Electric Arc Furnace (DRI ...
  • A review of the desulphurization methods used for pyrolysis oil 
    Serefentse, Ratanang; Ruwona, Wiseman; Danha, Gwiranai; Muzenda, Edison (Elsevier B.V., 2019)
    In this article we review the different methods that are used for the desulphurization of pyrolysis oil obtained from used tyres. A lot of research has been done on desulphurization of crude oil and its derivatives, mostly ...
  • A review of timber waste utilization: challenges and opportunities in Zimbabwe 
    Charis, Gratitude; Danha, Gwiranai; Muzenda, Edison (Elsevier B.V., 2019)
    This paper is a case study review of the timber waste problem and solutions that have been proffered in the Manicaland region of Zimbabwe. The study was conducted through primary data collected during site visits and a ...
  • A review on Botswana coal potential from a pyrolysis and gasification perspective 
    Makoba, Mmoloki; Botha, Daniel Erich; Rapoo, Mpho Thabang; Szabó, László Zsolt; Shomana, Thapelo; Agachi, Paul Serban; Muzenda, Edison (Faculty of Chemical Technology and Biotechnology of the Budapest University of Technology and Economics., 2021)
    Coal pyrolysis and gasification are promising options for the future of Botswana as the country has large coal reserves with severe limitations in terms of export options. Coal characterization facilities will be required ...
  • A review on drones controlled in real-time 
    Kangunde, Vemema; Jamisola, Rodrigo S.; Theophilus, Emmanuel K. (Springer Nature Switzerland, 2021-01-05)
    This paper presents related literature review on drones or unmanned aerial vehicles that are controlled in real-time. Systems in real-time control create more deterministic response such that tasks are guaranteed to be ...
  • A review on material and energy recovery from waste tyres 
    Ruwona, Wiseman; Danha, Gwiranai; Muzenda, Edison (Elsevier B.V., 2019)
    The tyre industry in Botswana produces and sells thousands of tyres annually generating volumes of waste tyres which contribute towards the country’s waste management challenges. At the end of their useful life, most tyres ...
  • A review on wingtip devices for reducing induced drag on fixed-wing drones 
    Makgantai, Boitumelo; Subaschandar, N.; Jamisola, Rodrigo S. (Science Press, 2021)
    This review paper presents and analyzes previous studies on wingtip devices mainly to reduce induced drag on fixed-wing aircraft and drones. Some of the parameters discussed are the different types of winglets, cant angles, ...
  • The role of graphite addition on spark plasma sintered titanium nitride 
    Akinribide, Ojo Jeremiah; Obadele, Babatunde Abiodun; Ayeleru, Olusola Olaitan; Akinwamide, Olukayode Samuel; Nomoto, Keita; Eizadjou, Mehdi; Ringer, Simon P.; Olubambi, Peter Apata (Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license, 2020-05)
    Composites of titanium nitride reinforced with graphite were synthesized using spark plasma sintering at 2000 °C. The effects of graphite addition on the microstructure, relative density, and mechanical properties of TiN ...
  • A secured and efficient communication scheme for decentralized cognitive radio-based internet of vehicles 
    Yao, Wei; Yahya, Abid; Khan, Fazlullah; Tan, Zhiyuan; Rehman, Ateeq Ur; Chuma, Joseph; Jan, Mian Ahmad; Babar, Muhammad (IEEE, 2019)
    The advancements in hardware technologies have driven the evolution of vehicular ad hoc networks into the Internet of Vehicles (IoV). The IoV is a decentralized network of IoT-enabled vehicles capable of smooth traffic ...
  • A secured data management scheme for smart societies in industrial internet of things environment 
    Babar, Muhammad; Khan, Fazlullah; Iqbal, Waseem; Yahya, Abid; Arif, Fahim; Tan, Zhiyuan; Chuma, Joseph (IEEE Explore, 2018-07)
    Smart societies have an increasing demand for quality-oriented services and infrastructure in an industrial Internet of Things (IIoT) paradigm. Smart urbanization faces numerous challenges. Among them, secured energy ...
  • A secured smart home switching system based on wireless communications and self-energy harvesting 
    Zungeru, Adamu Murtala; Gaboitaolelwe, Jwaone; Diarra, Bakary; Chuma, Joseph; Ang, Li-Minn; Kolobe, Lone; David, Mpho; Zibani, Ishmael (IEEE Xplore, 2019-02-19)
    Due to human influence and its negative impacts on the world’s environment, the world ischanging into a cleaner and more sustainable energy system. In both private and public buildings, there isa desire to reduce electricity ...
  • Security of quantum-key-distribution protocol by using the post-selection technique 
    Sekga, Comfort; Mafu, Mhlambululi (Elsevier B.V., 2021-05)
    The post-selection technique was proposed by Christandl, König, and Renner [Phys. Rev. Lett. 102, 020504 (2009)] to simplify the security of quantum-key-distribution schemes. This work applies this technique to derive the ...
  • Soil properties influence bacterial abundance and diversity under different land-use regimes in semi-arid environments 
    Mhete, Modise; Eze, Peter N.; Rahube, Teddie; Akinyemi, Felicia (Elsevier B.V., 2019-11)
    Bacterial diversity is known to be a driver of soil ecosystem services and it is influenced by the natural integrity of the environments. Samples from garden soil, saline soil and sludge-impacted soil were studied to ...
  • Spatiotemporal changes in mean and extreme climate: Farmers’ perception and its agricultural implications in Awash river basin, Ethiopia 
    Damtew, Addisu; Teferi, Ermias; Ongoma, Victor; Mumo, Richard; Esayas, Befikadu (Multidisciplinary Digital Publishing Institute(MDPI), 2022-06-20)
    The increase in the intensity and frequency of climate extremes threatens socioeconomic development. This study examines variability of mean and extreme climate, farmers’ perception of the changes, and impacts in the Awash ...
  • The split equality fixed point problem for quasi-pseudo-contractive mappings without prior knowledge of norms 
    Boikanyo, Oganeditse A.; Zegeye, Hailu Habtu (Taylor & Francis group, 2019-10-12)
    Recently, Chang et al. (2015) constructed an algorithm that converges weakly to the solution of the split equality fixed point problem for quasi-pseudo-contractive mappings under some suitable conditions. They also showed ...
  • Split equality variational inequality problems for pseudomonotone mappings in Banach spaces 
    Boikanyo, Oganeditse A; Zegeye, Habtu (Babeş-Bolyai University, Faculty of Mathematics and Computer Science, 2021)
    A new algorithm for approximating solutions of the split equality variational inequality problems (SEVIP) for pseudomonotone mappings in the setting of Banach spaces is introduced. Strong convergence of the sequence generated ...

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