Now showing items 71-90 of 117

  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Rural Wireless Mesh Network Analysis on Mobile Devices 

    Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella; Tucker, William David (Telkom SA, 2014)
    The aim of this research effort is to build an efficient and accurate mobile traffic generator based on open source computer-based traffic generator software. A high performance mobile traffic generator would make the ...
  • Secure contactless smart card transactions on mobile devices 

    Poroye, Adeola; Tucker, William David; Norman, Michael (Telkom, 2009)
    This paper presents work in progress to explore the utility of Near Field Communication technology to secure mobile financial services. The objective is to evaluate the potential of this approach as an upcoming technology ...
  • Security of a Mesh Potato Network in Ad Hoc Mode 

    Mauwa, H.; Tucker, William David (Telkom, 2013)
    Wireless Mesh Networks can provide low cost and reliable community-owned connectivity in developing rural areas. A rural community can use mesh networks to access a wide range of modern information and communication ...
  • SignSupport: a limited communication domain mobile aid for a Deaf patient at the pharmacy 

    Motlhabi, Michael B.; Glaser, Meryl; Tucker, William David (Telkom, 2013)
    This paper discusses a prototype for a communication aid on a mobile phone to support a Deaf1 person visiting a public hospital pharmacy. The aim is to prevent problems of non-compliance to treatment due to poor communication ...
  • SIP presence location service 

    Wu, Wilson; Radovanovic, Aleksandar; Tucker, William David (Telkom, 2005)
    This paper presents an innovative use of the Session Initiation Protocol (SIP) for the subscription and notification of geographic information in order to provide a privacy concerned location-based service. SIP is a signaling ...
  • Situation-aware routing based on link quality for static mesh networks with mobile nodes 

    Kobo, Hlabishi Isaac; Tucker, William David; Liu, Xiao Ming (Telkom, 2011)
    Situation-aware routing seeks to improve quality of service on hybrid wireless mesh networks by making routing decisions based on the current situation of the network. BATMAN-adv is a mesh routing protocol that counts ...