Now showing items 59-78 of 117

  • KernTune: Self-tuning Linux kernel performance using support vector machines 

    Yi, Long; Connan, James (Association for Computing Machinery, 2007)
    Self-tuning has been an elusive goal for operating systems and is becoming a pressing issue for modern operating systems. Well-trained system administrators are able to tune an operating system to achieve better system ...
  • Kiara: an open source SIP system to support Deaf telephony 

    Yi, Long; Tucker, William David (Telkom, 2008)
    This paper describes Kiara, an open source SIPbased communication system that provides the building blocks to enable Deaf relay services. We have implemented a prototype that provides real-time text, voice and video to a ...
  • Local ownership, exercise of ownership and moving from passive to active entitlement: a practice-led inquiry on a rural community network 

    Rey-Moreno, Carlos; Sabiescu, Amalia; Siya, Masbulele Jay; Tucker, William David (CCIRDT, 2015)
    In this paper, we aim to shed light on local ownership from a double practical and theoretical perspective, and examine its meaning as well as the factors that are bound to influence its development in community based ...
  • Making a community network legal within the South African regulatory framework 

    Rey-Moreno, Carlos; Tucker, William David; Cull, Domonic; Blom, R. (ACM, 2015)
    Community networks often operate at the fringe of legality with respect to spectrum, network infrastructure and providing services. We have been involved with such a network in a rural community, and together with them, ...
  • Mobile Communication Tools for a South African Deaf patient in a pharmacy context 

    Chininthorn, Prangnat; Glaser, Meryl; Freudenthal, Adinda; Tucker, William David (IIMC International Information Management Corporation, 2012)
    This paper presents a case for iterative community-based co-design to facilitate the emergence of an innovative mobile system to address a potentially life-threatening scenario for Deaf people in South Africa. For Deaf ...
  • A mobile Deaf-to-hearing communication aid for medical diagnosis 

    Mutemwa, Muyowa; Tucker, William David (Telkom, 2010)
    This paper describes how a deaf to hearing communication aid built for a mobile phone can be used to provide semi-synchronous communication between a Deaf person and a hearing person who cannot sign. Deaf people with access ...
  • A mobile platform traffic generator for network performance evaluation 

    Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella M.; Rey-Moreno, Carlos; Tucker, William David (Telkom, 2013)
    This work in progress paper presents an overview of the development of an efficient and accurate mobile traffic generator based on an open source computer-based traffic generator software. A high performance mobile traffic ...
  • Mobile vertical handover between infrastructure and ad hoc Wi-Fi networks 

    Chitedze, Zimani; Tucker, William David (Telkom, 2011)
    This paper addresses mobility management issues in an environment with both wireless LAN and wireless mesh networks. We first examine wireless mesh network client side transparency within mesh mobility management protocols ...
  • A Mobile-Health Information Access System 

    Adesina, Ademola Olusola; Nyongesa, Henry O. (Telkom, 2013)
    Patients using the Mobile-Health Information System can send SMS requests to a Frequently Asked Questions (FAQ) web server with the expectation of receiving an appropriate feedback on issues that relate to their health. ...
  • MUTI Telehealth 

    Tucker, William David; Vuza, Xolisa; Chetty, Marshini; Blake, Edwin H.; Marsden, Gary; Pearson, Murray; Westerveld, Rudi (2007)
    For four years we have been iteratively evolving MUTI, a rural telehealth system, for hospitals and clinics in a remote rural part of the Eastern Cape in South Africa (Chetty, 2005; Chetty et al., 2003, 2004a; Maunder et ...
  • A novel approach integrating ranking functions discovery, optimization and infernce to improve retrieval performance 

    Agbele, Kehinde K.; Adesina, Ademola Olusola; Nyongesa, Henry O.; Febba, Ronald (Medwell Journals, 2010)
    The significant roles play by ranking function in the performance and success of Information Retrieval (IR) systems and search engines cannot be underestimated. Diverse ranking functions are available in IR literature. ...
  • A novel document ranking algorithm that supports mobile healthcare information access effectiveness 

    Agbele, Kehinde K.; Adesina, Ademola Olusola; Azeez, Nureni A.; Abidoye, Ademola P.; Febba, Ronald (Academic Journals Inc., 2011)
    This study presented DROPT; an acronym for Document ranking Optmization algorithm approach, a new idea for the effectiveness of meaningful retrieval results from the information source. Proposed method extracted the frequency ...
  • 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 ...