Browsing Research Articles (Computer Science) by Title

Now showing items 9-28 of 170

    • ANCAEE: A novel clustering algorithm for energy efficiency in wireless sensor networks 

      Abidoye, Ademola P.; Azeez, Nureni A.; Adesina, Ademola Olusola; Agbele, Kehinde K. (Scientific Research Publishing, 2011)
      One of the major constraints of wireless sensor networks is limited energy available to sensor nodes because of the small size of the batteries they use as source of power. Clustering is one of the routing techniques that ...

    • Article comparing three countries’ higher education students’ cyber related perceptions and behaviours during COVID-19 

      Tick, Andrea; Cranfield, Desireé J.; Renaud, Karen V. (MPDI, 2021)
      : In 2020, a global pandemic led to lockdowns, and subsequent social and business restrictions. These required overnight implementation of emergency measures to permit continued functioning of vital industries. Digital ...

    • Asynchronous video telephony for the Deaf 

      Ma, Zhen Yu; Tucker, William David (Telkom, 2007)
      The South African Deaf community has very limited telephony options. They prefer to communicate in sign language, a visual medium. Realtime video over Internet Protocol is a promising option, but in reality, the quality ...

    • Automatic voice relay with open source Kiara 

      Yi, Long; Tucker, William David (Telkom, 2009)
      One way for Deaf people to communicate with hearing people over the telephone is to use a voice relay. The service is often provided with a human relay operator that relays text into voice, and vice versa, on behalf of the ...

    • Basic statistical estimation outperforms machine learning in monthly prediction of seasonal climatic parameters 

      Hussein, Eslam A.; Ghaziasgar, Mehrdad; Thron, Christopher (MPDI, 2021)
      Machine learning (ML) has been utilized to predict climatic parameters, and many successes have been reported in the literature. In this paper, we scrutinize the effectiveness of five widely used ML algorithms in the ...

    • Battery and data drain of over-the-top applications on low-end smartphones 

      Om, Shree; Tucker, William David (IIMC International Information Management Corporation, 2018)
      Low-end smartphones with sub $50 price tags provide affordable device ownership to low-income populations. However, their limited capacity, when combined with the need for multimodal connectivity, raises usage concerns in ...

    • Beyond traditional ethics when developing assistive technology for and with deaf people in developing regions 

      Tucker, William David (Springer, 2015)
      There are limitations to traditional ethical approaches and procedures when engaged in assistive technology (AT) research for Deaf people in a developing region. Non-traditional issues arise as a consequence of employing ...

    • A bridge over the computer science graduate skill gap 

      Blignaut, Renette; Venter, Isabella M.; Renaud, Karen (2013)
      Universities are increasingly required to respond to the ever evolving needs of an ever more sophisticated and globalised workplace, which requires well-rounded workers with more than mere technical knowledge. Employers ...

    • Bridging communications across the digital divide 

      Blake, Edwin H.; Tucker, William David (CTIT, 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 ...

    • Browser-based sign language communication 

      Wang, Yuan Yuan; Tucker, William David (Telkom, 2010)
      This paper describes the design and evaluation of two browser-based video communication prototypes that support sign language communication between Deaf people. The research explores combinations of technologies, protocols ...

    • Browser-based video communication for deaf people 

      Wang, Yuan Yuan; Tucker, William David (Telkom, 2009)
      This paper describes work in progress to to provide browser-based sign language communication for deaf users. The paper introduces the communication requirements for a disadvantaged Deaf community in Cape Town, describes ...

    • 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 ...