Now showing items 111-130 of 171

    • On the Evolution Equation for Modelling the Covid-19 Pandemic 

      Blackledge, J (2021)
      The paper introduces and discusses the evolution equation, and, based exclusively on this equation, considers random walk models for the time series available on the daily confirmed Covid-19 cases for different countries. ...
    • An ontology for the south african protection of personal information act 

      Jafta, Yahlieel; Leenen, Louise; Chan, Peter (Curran Associates Inc., 2020)
      The protection and management of data, and especially personal information, is becoming an issue of critical importance in both the business environment and in general society. Various institutions have justifiable reasons ...
    • Open user interconnect and quality of communication 

      Tucker, William David; Blake, Edwin H.; Marsden, Gary (Telkom, 2004)
      We looked for and found two situations within the South African Digital Divide where constant and severe macro-scale latencies would most likely interfere with the usage of Information and Communication Technology (ICT) ...
    • Optimisation of SlotTime for a single-radio Mid-Range Multi-hop Wireless Mesh Network 

      Rey-Moreno, Carlos; Tucker, William David; Simo-Reigadas, Javier (Telkom SA, 2014)
      This paper presents the business context and results of an optimisation exercise for a single-radio mid-range multi-hop wireless mesh network for the provision of VoIP services. This WiFi mesh network physically covers 30 ...
    • A participatory design for a billing system: A South African case study of a community based telephony system 

      Ufitamahoro, Marie Josee; Venter, Isabella; Rey-Moreno, Carlos; Tucker, William David (ACM, 2014)
      This paper describes the role participatory design can play in developing and implementing an information and communication technology for development project in a rural area. It shows how the process of co-designing an ...
    • Peer-to-Peer Computing and Grid Computing: towards a better understanding 

      Azeez, Nureni A.; Abidoye, Ademola P.; Adesina, Ademola Olusola; Agbele, Kehinde K.; Iyamu, Tiko; Venter, Isabella M. (Akamai University, 2011)
      Currently, both Peer-to-Peer Computing (P2P) and Grid Computing have remained the most vibrant and useful forms of distributed computing all over the world. Their applications are such that they cut across both academia ...
    • Performance Evaluation of a Wireless Network using a VoIP Traffic Generator on a Mobile Device 

      Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella; Tucker, William David (ACM, 2014)
      The problem of generating different patterns of traffic to emulate real user behaviour is receiving considerable attention with the construction of new and more complex network architectures. The theoretical modelling of ...
    • Please call ME.N.U.4EVER: designing for “Callback” in rural Africa 

      Bidwell, Nicola J.; Lalmas, Mounia; Marsden, Gary; Dlutu, Bongiwe; Ntlangano, Senzo; Manjingolo, Azola; Tucker, William David; Jones, Matt; Robinson, Simon; Vartiainen, Elina; Klampanos, Iraklis (Product & Systems Internationalisation, Inc, 2011)
      Designers and developers are naïve about the ways impoverished people in rural Africa innovate new uses of mobile technology to circumvent access difficulties. Here, we report on the local appropriation of an USSD ‘Callback’ ...
    • Policy-based network management of legacy equipment in Next Generation Networks 

      Naidoo, Vaughn; Tucker, William David (Telkom, 2001)
      Next Generation Networks use policy-based network management and QoS protocols to provide voice services on IP networks. Large numbers of older equipment still push IP packets. We present several solutions that include ...
    • A preliminary study of a graphene fractal sierpinski antenna 

      Blackledge, Jonathan M.; Boretti, Alberto; Rosa, Lorenzo (Institute of Physics Publishing, 2020)
      We provide a preliminary study of a Graphene fractal antenna operating at THz frequencies with the opportunity to modulate the emission. There are many advantages of the fractal design, namely multiband/wideband ability, ...
    • Preparation of Deaf end-users and the softbridge for semi-automated relay trials 

      Glaser, Meryl; Tucker, William David; Mashao, Daniel (Telkom, 2004)
      Following on the development of several prototypes, we have built a semi-automated Deaf Telephony prototype on the SoftBridge platform. This prototype relays text and speech between Deaf users on the Internet and hearing ...
    • A query-based SMS translation in information access system 

      Adesina, Ademola Olusola; Agbele, Kehinde K.; Azeez, Nureni A.; Abidoye, Ademola P. (Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd., 2011)
      Mobile technology has contributed to the evolution of several media of communication such as chats, emails and short message service (SMS) text. This has significantly influenced the traditional standard way of expressing ...
    • Real-time gesture recognition using eigenvectors 

      Segers, Vaughn; Connan, James (2009)
      This paper discusses an implementation for gesture recognition using eigenvectors under controlled conditions. This application of eigenvector recognition is trained on a set of defined hand images. Training images are ...
    • Reflection on three years of rural wireless Internet Protocol communication 

      Tucker, William David; Blake, Edwin H.; Marsden, Gary; Pearson, Murray; Westerveld, Rudi (Telkom, 2007)
      This paper reports on three years of research and fieldwork with a rural wireless Internet Protocol communication project. We built a long-range WiFi network and custom communication software to support a rural telehealth ...
    • Regional rainfall prediction using support vector machine classification of large-scale precipitation maps 

      Hussein, Eslam A.; Ghaziasgar, Mehrdad; Thron, Christopher (Institute of Electrical and Electronics Engineers Inc., 2020)
      Rainfall prediction helps planners anticipate potential social and economic impacts produced by too much or too little rain. This research investigates a class-based approach to rainfall prediction from 1-30 days in advance. ...
    • Relevant computing curricula in Sub-Saharan Africa 

      Rai, Idris; Rodrigues, Anthony; Venter, Isabella M.; Mills, Godfrey; Suleman, Hussein; Edumadze, John (2011)
      The principle objective of this research was to establish what computing curricula are required for the Sub-Saharan Africa region. Input from academics, businessmen and the analyses of curricula from several African ...
    • Reliable communication across ad hoc networks 

      Daniels, Francois; Tucker, William David (Telkom, 2008)
      This paper presents a fully decentralised peer-topeer voice communication tool intended for use across mobile ad hoc networks (MANET) by distributed groups who desired collaboration. We examined the synergy between MANETs ...
    • Renewing Felsenstein’s phylogenetic Bootstrap in the era of big data 

      Lemoine, F.; Entfellner, Jean-Baka Domelevo; Wilkinson, E.; Correia, D.; Felipe, M. Davila; De Oliveira, T.; Gascuel, O. (Nature Publishing Group, 2018)
      Felsenstein’s application of the bootstrap method to evolutionary trees is one of the most cited scientific papers of all time. The bootstrap method, which is based on resampling and replications, is used extensively to ...
    • A review of the fractal market hypothesis for trading and market price prediction 

      Blackledge, Jonathan; Lamphiere, Marc (MPDI, 2022)
      This paper provides a review of the Fractal Market Hypothesis (FMH) focusing on financial times series analysis. In order to put the FMH into a broader perspective, the Random Walk and Efficient Market Hypotheses are ...
    • The role of Outcome Mapping in developing a rural telemedicine system 

      Tucker, William David; Blake, Edwin H. (International Information Management Corporation, 2008)
      We describe the use of Outcome Mapping to guide the design of a rural telemedicine consultation system in South Africa. While Outcome Mapping was not primarily intended to guide design, we show that it tied in well with a ...