Browsing Prof. William Tucker by Issue Date

Now showing items 21-40 of 89

    • An IP based multimodal semi-synchronous rural telehealth service: Adding video messaging and conferencing to MuTI 

      Vuza, Xolisa; Tucker, William David (Telkom, 2004)
      We intend adding video messaging and conferencing to Multimodal Telemedicine Intecommunicator (MuTI), a previous system that has already been in place in the target environment. This is to allow a semi-synchronous communication ...

    • Guaranteed delivery of semi-synchronous IP-based communication 

      Julius, Elroy P.; Tucker, William David (Telkom, 2004)
      This research aims to find an empirical solution for guaranteeing the delivery of synchronous and asynchronous messages within a semi-synchronous IP-based communication domain. The communication infrastructure that is ...

    • Telemedicine using VoIP combined with a store and forward approach 

      Chetty, Marshini; Tucker, William David; Blake, Edwin H. (Telkom, 2004)
      Rural areas in South Africa have unique conditions such as remoteness and scarcity of reliable public facilities. Information and Communication Technologies (ICTs) introduced into these areas must be suitable for these ...

    • A Softbridge with carrier grade reliability using JAIN SLEE 

      Sun, Tao; Tucker, William David (Telkom, 2004)
      We have built a SoftBridge prototype within a JAIN (Java APIs for the Integrated Network) SLEE (Service Logic Execution Environment). A SoftBridge is a semi-synchronous multimodal IP (Internet Protocol) -based communication ...

    • Affective gesture feedback Instant Messaging on handhelds 

      Adesemowo, A. Kayode; Tucker, William David (Institute of Electrical and Electronics Engineers, Inc., 2004)
      Mobile devices and mobile networks are becoming more data-centric (evident in Japanese I-mode) even as mobile network voice Average Revenue Per User are declining, new stream of data services are required which must take ...

    • Instant Messaging on handhelds: affective feedback 

      Adesemowo, A. Kayode; Tucker, William David (Telkom, 2004)
      A text only Instant Messaging (IM) built on the IETF open standard SIP/SIMPLE has been developed in line with our proposed introduction of a user-defined text Hotkey feature. These act as an on-click Affective Gesture (AG): ...

    • Ethics and mono-disciplinarity: positivism, informed consent and informed participation 

      Hersh, Marion A.; Tucker, William David (Elsevier, 2005)
      There are a number of pressures on researchers in academia and industry to behave unethically or compromise their ethical standards, for instance in order to obtain funding or publish frequently. In this paper a case study ...

    • Instant messaging on handhelds: an affective gesture approach 

      Adesemowo, A. Kayode; Tucker, William David (SAICSIT in association with ACM, 2005)
      Text communication can be perceived as lacking in chat spontaneity, or plastic, due to medium limitations during interaction. A form of text messaging, Instant Messaging (IM), is now on the uptake, even on mobile handhelds. ...

    • SIP presence location service 

      Wu, Wilson; Radovanovic, Aleksander; 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 ...

    • Guaranteed delivery of semi-synchronous IP-based communication 

      Julius, Elroy P.; Tucker, William David (Telkom, 2005)
      This paper presents an empirical solution for guaranteeing the delivery of synchronous and asynchronous messages within a semi-synchronous IPbased communication domain. The communication infrastructure that is needed between ...

    • Evaluating the relevance of the “Real Access” criteria as a framework for rural HCI research 

      Maunder, Andrew; Marsden, Gary; Tucker, William David (ACM, 2006)
      Developing ICT software that is useful and usable in a rural context poses many problems. One of the major difficulties is understanding the real needs of the target users and the constraints imposed by the rural environment. ...

    • Socially aware software engineering for the developing world 

      Blake, Edwin H.; Tucker, William David (IIMC International Information Management Corporation, 2006)
      While the social effects of Information Technology (IT) have received much attention there is very little work on targeted methodologies to develop IT applications and content in a developing world environment. This paper ...

    • User interfaces for communication bridges across the digital divide 

      Blake, Edwin H.; Tucker, William David (Springer-Verlag, 2006)
      Connecting people across the Digital Divide is as much a social effort as a technological one. We are developing a community-centred approach to learn how interaction techniques can compensate for poor communication across ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • Adapting x264 to asynchronous video telephony for the Deaf 

      Ma, Zhen Yu; Tucker, William David (Telkom, 2008)
      Deaf people want to communicate remotely with sign language. Sign language requires sufficient video quality to be intelligible. Internet-based real-time video tools do not provide that quality. Our approach is to use ...

    • 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 ...

    • 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 ...