Now showing items 20-39 of 171

    • Call capacity for voice over Internet Protocol on wireless mesh networks 

      Zulu, Docas Dudu; Tucker, William David (Telkom, 2010)
      This paper describes work in progress on call capacity optimization for voice over Internet Protocol on wireless mesh networks. In a developing country such as South Africa, evidence has shown that rural inhabitants find ...
    • Carbon futures trading and short-term price prediction: An analysis using the fractal market hypothesis and evolutionary computing 

      Lamphiere, Marc; Blackledge, Jonathan; Kearney, Derek (MPDI, 2021)
      This paper presents trend prediction results based on backtesting of the European Union Emissions Trading Scheme futures market. This is based on the Intercontinental Exchange from 2005 to 2019. An alternative trend ...
    • Cell phone notification via bluetooth for Web 2.0 applications 

      Mutemwa, Muyowa; Tucker, William David; Norman, Michael (Telkom, 2009)
      This paper discusses how an Instant Messaging application on a computer can use Bluetooth in order to provide vibration notification on a mobile phone. The initial motivation was to aid Deaf1 office workers to know when ...
    • Challenges for the adoption of ICT for diabetes selfmanagement in South Africa 

      Petersen, Fazlyn; Afeefa, Brown; Shaun, Pather; Tucker, William D (University of the Western Cape, 2019)
      The increasing disease burden in developing countries inhibits the provision of quality care to citizens. However, the increased availability of information communication and technology (ICT) tools makes this a viable ...
    • Clustered data muling in the internet of things in motion 

      Tuyishimire, Emmanuel; Bagula, Antoine; Ismail, Adiel (MDPI, 2019)
      This paper considers a case where an Unmanned Aerial Vehicle (UAV) is used to monitor an area of interest. The UAV is assisted by a Sensor Network (SN), which is deployed in the area such as a smart city or smart village. ...
    • Clustered Multi-layer Multi-protocol Wireless Mesh Networks 

      Abdalla, Taha; Rey-Moreno, Carlos; Tucker, William David; Bagula, Antoine (Telkom, 2015)
      Wireless Mesh Networks (WMNs) have emerged as an alternative option to the wired networks in areas where wired deployment is unfeasible and/or costly. They have been widely adopted in community networks as these networks ...
    • Co-designing a billing system for voice services in rural South Africa: Lessons learned 

      Rey-Moreno, Carlos; Ufitamahoro, Marie Josee; Venter, Isabella; Tucker, William David (ACM, 2014)
      Access to information and communication technologies re- mains una ordable for many in rural areas despite recent progress in providing voice services to remote communities. The sustainability of alternative technical ...
    • Communicating in designing an oral repository for rural African villages 

      Reitmaier, Thomas; Bidwell, Nicola J.; Siya, Masbulele Jay; Marsden, Gary; Tucker, William David (IIMC International Information Management Corporation, 2012)
      We describe designing an asynchronous, oral repository and sharing system that we intend to suit the needs and practices of rural residents in South Africa. We aim to enable users without access to personal computers to ...
    • Community healthcare mesh network engineering in white space frequencies 

      Bagula, Antoine (Institute of Electrical and Electronics Engineers, 2019)
      The transition from analog to digital television has availed new spectrum called white space, which can be used to boost the capacity of wireless networks on an opportunistic basis. One sector in which there is a need to ...
    • Community-based solar power revenue alternative to improve sustainability of a rural wireless mesh network 

      Rey-Moreno, Carlos; Roro, Zukile; Tucker, William David; Siya, Masbulele Jay (ACM, 2013)
      Given the needs for a clean and easy way to maintain and secure powering wireless networks in rural areas and to gen- erate revenue to guarantee the sustainability of its intended goals, an innovative approach to leverage ...
    • Comparative study of admissions criteria of a selection of South African universities 

      Blignaut, Renette; Venter, Isabella M. (Stellenbosch University, 2011)
      Summary: The new school-leaving certificate, the National Senior Certificate (NSC), was awarded for the first time in 2008. This necessitated a relook at the entrance requirements for university, as the school subjects ...
    • A Comparison of deep learning architectures for optical galaxy morphology classification 

      Fielding, Ezra; Nyirenda, Clement N.; Vaccari, Mattia (International Conference on Electrical, Computer and Energy Technologies (ICECET), 2021)
      The classification of galaxy morphology plays a crucial role in understanding galaxy formation and evolution. Traditionally, this process is done manually. The emergence of deep learning techniques has given room for the ...
    • Comparison of phenolic content and antioxidant activity for fermented and unfermented rooibos samples extracted with water and methanol 

      Hussein, Eslam A.; Thron, Christopher; Ghaziasgar, Mehrdad (MPDI, 2022)
      Rooibos is brewed from the medicinal plant Aspalathus linearis. It has a well-established wide spectrum of bio-activity properties, which in part may be attributed to the phenolic antioxidant power. The antioxidant ...
    • Complex sequential data analysis: A systematic literature review of existing algorithms 

      Dandajena, Kudakwashe; Venter, Isabella M.; Ghaziasgar, Mehrdad (SAICSIT, 2020)
      This paper provides a review of past approaches to the use of deep-learning frameworks for the analysis of discrete irregularpatterned complex sequential datasets. A typical example of such a dataset is financial data ...
    • A comprehensive survey on Fog Computing: State-of-the-art and research challenges 

      Mouradian, Carla; Naboulsi, Diala; Yangui, Sami; Morrow, Monique J.; Polakos, Paul A.; Glitho, Roch H. (IEEE, 2018)
      Cloud computing with its three key facets (i.e., Infrastructure-as-a-Service, Platform-as-a-Service, and Softwareas- a-Service) and its inherent advantages (e.g., elasticity and scalability) still faces several challenges. ...
    • Connecting bridges across the digital divide 

      Tucker, William David (ACM, 2004)
      Connecting people across the Digital Divide is as much a social effort as a technological one. We are developing a community-centered approach to learn how interaction techniques can compensate for poor communication across ...
    • Context-Aware Stemming algorithm for semantically related root words 

      Agbele, Kehinde K.; Adesina, Ademola Olusola; Azeez, Nureni A.; Abidoye, Ademola P. (Institute of Electrical and Electronics Engineers (IEEE) Inc., 2012)
      There is a growing interest in the use of context-awareness as a technique for developing pervasive computing applications that are flexible and adaptable for users. In this context, however, information retrieval (IR) is ...
    • Cyber physical systems dependability using cps-iot monitoring 

      Bagula, Antoine; Ajayi, Olasupo; Maluleke, Hloniphani (MPDI, 2021)
      Recently, vast investments have been made worldwide in developing Cyber-Physical Systems (CPS) as solutions to key socio-economic challenges. The Internet-of-Things (IoT) has also enjoyed widespread adoption, mostly for ...
    • Cyber security education is as essential as “the three R's” 

      Venter, Isabella M.; Blignaut, Renette J.; Renaud, Karen; Venter, Anja (CELLPRESS, 2019)
      Smartphones have diffused rapidly across South African society and constitute the most dominant information and communication technologies in everyday use. That being so, it is important to ensure that all South Africans know ...
    • Deaf telephony: community-based co-design 

      Blake, Edwin H.; Tucker, William David; Glaser, Meryl; Freudenthal, Adinda (Wiley, 2011)
      The process of community-based co-design is one that explores various solution configurations in a multi-dimensional design space whose axes are the different dimensions of requirements and the various dimensions of designer ...