Rhodes University

Displaying 1-25 of 25 results

  • White Papers // Aug 2011

    Transparent and Reliable Computing Power Service Provision on P2P Systems

    The advancements in virtualization technologies have provided a large spectrum of computational approaches. Dedicated computations can be run on private environments (Virtual Machines), created within the same computer. Through capable APIs, this functionality is leveraged for the service, the authors wish to implement; a Computer Power Service (CPS). They target...

    Provided By Rhodes University

  • White Papers // Aug 2011

    A Proxy Approach to Control Interoperability on Ethernet AVB Networks

    Ethernet AVB guarantees the necessary quality of service required to transmit real-time media, such as audio/video content. The IEEE 1722 protocol defines the messaging format for transmission of media content on an AVB network. With the efforts of the IEEE 1722 and IEEE 1722.1 working groups, there is a drive...

    Provided By Rhodes University

  • White Papers // Aug 2011

    Developing a Cross Platform IMS Client Using the JAIN SIP Applet Phone

    The interest in the adoption of the IP Multimedia Subsystem (IMS) by industry and research institutes has resulted in the establishment of IMS testbeds for developing and deploying IMS services. The client applications used for testing and consuming services within these testbeds are important for the overall success of the...

    Provided By Rhodes University

  • White Papers // Aug 2011

    An Evaluation of Trading Bands as Indicators for Network Telescope Datasets

    Large scale viral outbreaks such as Conficker, the Code Red worm and the Witty worm illustrate the importance of monitoring malevolent activity on the Internet. Careful monitoring of anomalous traffic allows organizations to react appropriately and in a timely fashion to minimize economic damage. Network telescopes, a type of Internet...

    Provided By Rhodes University

  • White Papers // May 2011

    Composing a Simple Friend-Finder Application Using the SIP Location-Based Services Toolkit

    The increase of data traffic and access to the Internet has resulted in more consumer-driven markets. There is increasing pressure for Mobile Network Operators (MNOs) to quickly and innovatively provide personalised multimedia services that combine voice, video, presence and location. Many traditional SIP applications have always included presence capabilities in...

    Provided By Rhodes University

  • White Papers // Jan 2011

    A Baseline Numeric Analysis of Network Telescope Data for Network Incident Discovery

    This paper investigates the value of Network Telescope data as a mechanism for network incident discovery by considering data summarization, simple heuristic identification and deviations from previously observed traffic distributions. It is important to note that the traffic observed is obtained from a Network Telescope and thus does not experience...

    Provided By Rhodes University

  • White Papers // Nov 2010

    Risk-Return Tradeoff And The Behaviour Of Volatility On The South African Stock Market: Evidence From Both Aggregate And Disaggregate Data

    The paper analyses the nature and behavior of volatility, the risk-return relationship and the long-term trend of volatility on the South African equity markets, using aggregate-level, industrial-level and sectoral-level daily data for the period 1995-2009. By employing dummy variables for the Asian and the sub-prime financial crises and the 11...

    Provided By Rhodes University

  • White Papers // Jul 2010

    HIV Testing Site Locator: Applying Current Computing Trends to Voice Applications

    Voice applications are increasingly growing in popularity as computing technologies advance. This is a positive development because voice communication offers a number of benefits over other forms of communication; even though information can only be presented serially. As a means to ameliorate this limitation, the authors have proposed a futuristic...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Adding Location-Based Services Support to the Mobicents Service Delivery Platform

    Research has indicated that there has been a steady increase in the number of location-aware devices and applications and that this trend is likely to continue well into the future. The private and secure transmission of geographical data over SIP/IP core networks is therefore seen as adding significant value to...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Streaming Session Transfer Between Registered User Agents

    The development of telecommunication technologies has simplified the delivery of interactive multimedia services anywhere, anytime, and on any device. As a result, it is now easy to obtain multimedia services, such as IPTV, on small hand-held mobile devices, in addition to computers and TVs. This has pushed users to demand...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Bluetooth Audio and Video Streaming on the Java ME Platform

    This paper investigates the feasibility of Bluetooth as a protocol for audio and video streaming between mobile phones using the Java ME platform. A comparison is made between Radio Frequency COMMunications (RFCOMM) protocol and the Logical Link Control and Adaptation Protocol (L2CAP) to determine which protocol can support the fastest...

    Provided By Rhodes University

  • White Papers // Jul 2010

    WiMAX for Rural SA: The Experience of the Siyakhula Living Lab

    Rural development is seen as a priority in South Africa; information and knowledge are key strategic resources for social and economic development. Information Communication Technologies (ICTs) are seen as important tools in rural development, assisting in enabling change through economic development. In rural areas where ICT infrastructure is limited wireless...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Bandwidth Management and Monitoring for Community Networks

    This paper describes a custom-built system to replace existing routing solutions within an identified community network. The community network in question shares a VSAT Internet connection to provide Internet access to a number of schools and their surrounding communities. This connection provides a limited resource which needs to be managed...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Towards a Customised Video on Demand Service for the Mobicents Platform

    Customisation has become a key feature in new and upcoming communications applications. The "New media" viewpoint is that the user is increasingly in control. Viewing preferences and user driven advertising (including On-Demand advertising), coupled with innovative billing are expected to help IPTV/Video-on-Demand (VoD) attract traditional broadcast TV viewers. Several IPTV/VoD...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Towards Service Capability Interaction Management in IMS Networks

    For a long time, IP Multimedia Subsystem (IMS) services have been developed and deployed in a manner that does not carefully consider how these services can interact with each other in a beneficial way. Services can often overlap in terms of the logic that they execute, causing pockets of redundant...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Investigating the Performance and Code Characteristics of Three Parallel Programming Models for C++

    The authors investigate and compare three parallel programming models for implementing parallel programs in C++ on multi-core computer systems. The models under consideration include the tried and tested OpenMP, Intel's Thread Building Blocks (TBB) and a do-it-yourself approach using Pthreads and Boost.Thread. For demonstration purposes, they create multiple parallel implementations...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Building a Delivery Platform for Literacy Research and Literacy Development

    FundaWethu is reading software that is designed to deliver reading lessons to Grade 1-3 (foundation phase) children who are learning to read in a multilingual context. Starting from a premise that the system should be both educative and entertaining, the system allows literacy researchers or teachers to construct rich multimedia...

    Provided By Rhodes University

  • White Papers // Jun 2010

    Ubiquitous Cloud Computing

    With the tremendous development in computing technology, it has become possible for most users to enjoy the benefits of high performance or multipurpose computing. This is achieved through cloud computing, which is a term that generally refers to delivering hosted services (e.g. Platform as a Service) over the Internet. Because,...

    Provided By Rhodes University

  • White Papers // Jun 2010

    Control Protocol Translation for Device Interoperability in the Context of Ethernet AVB

    With the introduction of Ethernet Audio Video Bridging (AVB) technology, there is an opportunity for deterministic transmission of data over Ethernet. The guaranteed transmission of data using the AVB technology will enable streaming of media (audio/video) alongside non-media data on the same Ethernet network. Each pro-audio device within a digital...

    Provided By Rhodes University

  • White Papers // May 2010

    Ensuring QoS in Professional Audio Networks Which Use IEEE 1394b

    The calculation of the bandwidth available, the latency of audio and control data and making sure the correct number of audio channels can be transmitted is of paramount importance to maintaining Quality of Service (QoS) in an audio network. QoS is very important in professional audio networks where audio needs...

    Provided By Rhodes University

  • White Papers // Nov 2009

    An Evaluation of Windows 7 Release Candidate

    This paper evaluates Microsoft latest Operating System (OS), Windows 7 and compares its performance to that of Windows XP. Similarities and differences between Windows 7 and Windows Vista are noted. The performance evaluation of the systems is carried out using freely available benchmarks to characterize the behavior of the Operating...

    Provided By Rhodes University

  • White Papers // Jul 2009

    An Evaluation of a Mobile Phone Platform as a Convergent Technology for Text Based Communication

    This paper investigates inexpensive means of communication through the use of instant messaging, text messaging over Hyper Text Transfer Protocol, and mobile email. It describes ThEm, a suite of applications consisting of an instant messenger, text messenger, and email application. All applications have been designed in such a way so...

    Provided By Rhodes University

  • White Papers // Jul 2009

    A Proxy Solution for Networked Audio Device Interoperability

    This paper proposes the use of a proxy as the means to achieving network interoperability. This paper investigates whether proxies can be used to attain cross network communication. In this paper two protocols are described, namely the Audio Video Control (AV/C) protocol and the contemporary AES-X170 protocol. An AV/C proxy...

    Provided By Rhodes University

  • White Papers // Jul 2009

    Providing Interoperability Of, and Control Over, Quality of Service Networks for Real-Time Audio and Video Devices

    In the IT industry there is a trend towards the convergence of the transportation of different types of content to single networking technologies. Web, e-mail and VoIP applications all use a common network to transport their data. This convergence leads to lower equipment costs and allows for more future-proof networks...

    Provided By Rhodes University

  • White Papers // May 2009

    An Analysis of Logical Network Distance on Observed Packet Counts for Network Telescope Data

    This paper investigates the relationship between the logical distance between two IP addresses on the Internet, and the number of packets captured by a network telescope listening on a network containing one of the addresses. The need for the computation of a manageable measure of quantification of this distance is...

    Provided By Rhodes University

  • White Papers // Aug 2011

    A Proxy Approach to Control Interoperability on Ethernet AVB Networks

    Ethernet AVB guarantees the necessary quality of service required to transmit real-time media, such as audio/video content. The IEEE 1722 protocol defines the messaging format for transmission of media content on an AVB network. With the efforts of the IEEE 1722 and IEEE 1722.1 working groups, there is a drive...

    Provided By Rhodes University

  • White Papers // Jul 2010

    HIV Testing Site Locator: Applying Current Computing Trends to Voice Applications

    Voice applications are increasingly growing in popularity as computing technologies advance. This is a positive development because voice communication offers a number of benefits over other forms of communication; even though information can only be presented serially. As a means to ameliorate this limitation, the authors have proposed a futuristic...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Adding Location-Based Services Support to the Mobicents Service Delivery Platform

    Research has indicated that there has been a steady increase in the number of location-aware devices and applications and that this trend is likely to continue well into the future. The private and secure transmission of geographical data over SIP/IP core networks is therefore seen as adding significant value to...

    Provided By Rhodes University

  • White Papers // May 2011

    Composing a Simple Friend-Finder Application Using the SIP Location-Based Services Toolkit

    The increase of data traffic and access to the Internet has resulted in more consumer-driven markets. There is increasing pressure for Mobile Network Operators (MNOs) to quickly and innovatively provide personalised multimedia services that combine voice, video, presence and location. Many traditional SIP applications have always included presence capabilities in...

    Provided By Rhodes University

  • White Papers // Aug 2011

    Developing a Cross Platform IMS Client Using the JAIN SIP Applet Phone

    The interest in the adoption of the IP Multimedia Subsystem (IMS) by industry and research institutes has resulted in the establishment of IMS testbeds for developing and deploying IMS services. The client applications used for testing and consuming services within these testbeds are important for the overall success of the...

    Provided By Rhodes University

  • White Papers // Aug 2011

    Transparent and Reliable Computing Power Service Provision on P2P Systems

    The advancements in virtualization technologies have provided a large spectrum of computational approaches. Dedicated computations can be run on private environments (Virtual Machines), created within the same computer. Through capable APIs, this functionality is leveraged for the service, the authors wish to implement; a Computer Power Service (CPS). They target...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Streaming Session Transfer Between Registered User Agents

    The development of telecommunication technologies has simplified the delivery of interactive multimedia services anywhere, anytime, and on any device. As a result, it is now easy to obtain multimedia services, such as IPTV, on small hand-held mobile devices, in addition to computers and TVs. This has pushed users to demand...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Building a Delivery Platform for Literacy Research and Literacy Development

    FundaWethu is reading software that is designed to deliver reading lessons to Grade 1-3 (foundation phase) children who are learning to read in a multilingual context. Starting from a premise that the system should be both educative and entertaining, the system allows literacy researchers or teachers to construct rich multimedia...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Towards a Customised Video on Demand Service for the Mobicents Platform

    Customisation has become a key feature in new and upcoming communications applications. The "New media" viewpoint is that the user is increasingly in control. Viewing preferences and user driven advertising (including On-Demand advertising), coupled with innovative billing are expected to help IPTV/Video-on-Demand (VoD) attract traditional broadcast TV viewers. Several IPTV/VoD...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Bluetooth Audio and Video Streaming on the Java ME Platform

    This paper investigates the feasibility of Bluetooth as a protocol for audio and video streaming between mobile phones using the Java ME platform. A comparison is made between Radio Frequency COMMunications (RFCOMM) protocol and the Logical Link Control and Adaptation Protocol (L2CAP) to determine which protocol can support the fastest...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Investigating the Performance and Code Characteristics of Three Parallel Programming Models for C++

    The authors investigate and compare three parallel programming models for implementing parallel programs in C++ on multi-core computer systems. The models under consideration include the tried and tested OpenMP, Intel's Thread Building Blocks (TBB) and a do-it-yourself approach using Pthreads and Boost.Thread. For demonstration purposes, they create multiple parallel implementations...

    Provided By Rhodes University

  • White Papers // Nov 2009

    An Evaluation of Windows 7 Release Candidate

    This paper evaluates Microsoft latest Operating System (OS), Windows 7 and compares its performance to that of Windows XP. Similarities and differences between Windows 7 and Windows Vista are noted. The performance evaluation of the systems is carried out using freely available benchmarks to characterize the behavior of the Operating...

    Provided By Rhodes University

  • White Papers // Nov 2010

    Risk-Return Tradeoff And The Behaviour Of Volatility On The South African Stock Market: Evidence From Both Aggregate And Disaggregate Data

    The paper analyses the nature and behavior of volatility, the risk-return relationship and the long-term trend of volatility on the South African equity markets, using aggregate-level, industrial-level and sectoral-level daily data for the period 1995-2009. By employing dummy variables for the Asian and the sub-prime financial crises and the 11...

    Provided By Rhodes University

  • White Papers // Jun 2010

    Ubiquitous Cloud Computing

    With the tremendous development in computing technology, it has become possible for most users to enjoy the benefits of high performance or multipurpose computing. This is achieved through cloud computing, which is a term that generally refers to delivering hosted services (e.g. Platform as a Service) over the Internet. Because,...

    Provided By Rhodes University

  • White Papers // Jul 2009

    A Proxy Solution for Networked Audio Device Interoperability

    This paper proposes the use of a proxy as the means to achieving network interoperability. This paper investigates whether proxies can be used to attain cross network communication. In this paper two protocols are described, namely the Audio Video Control (AV/C) protocol and the contemporary AES-X170 protocol. An AV/C proxy...

    Provided By Rhodes University

  • White Papers // May 2009

    An Analysis of Logical Network Distance on Observed Packet Counts for Network Telescope Data

    This paper investigates the relationship between the logical distance between two IP addresses on the Internet, and the number of packets captured by a network telescope listening on a network containing one of the addresses. The need for the computation of a manageable measure of quantification of this distance is...

    Provided By Rhodes University

  • White Papers // Jul 2009

    Providing Interoperability Of, and Control Over, Quality of Service Networks for Real-Time Audio and Video Devices

    In the IT industry there is a trend towards the convergence of the transportation of different types of content to single networking technologies. Web, e-mail and VoIP applications all use a common network to transport their data. This convergence leads to lower equipment costs and allows for more future-proof networks...

    Provided By Rhodes University

  • White Papers // Jul 2009

    An Evaluation of a Mobile Phone Platform as a Convergent Technology for Text Based Communication

    This paper investigates inexpensive means of communication through the use of instant messaging, text messaging over Hyper Text Transfer Protocol, and mobile email. It describes ThEm, a suite of applications consisting of an instant messenger, text messenger, and email application. All applications have been designed in such a way so...

    Provided By Rhodes University

  • White Papers // May 2010

    Ensuring QoS in Professional Audio Networks Which Use IEEE 1394b

    The calculation of the bandwidth available, the latency of audio and control data and making sure the correct number of audio channels can be transmitted is of paramount importance to maintaining Quality of Service (QoS) in an audio network. QoS is very important in professional audio networks where audio needs...

    Provided By Rhodes University

  • White Papers // Jul 2010

    WiMAX for Rural SA: The Experience of the Siyakhula Living Lab

    Rural development is seen as a priority in South Africa; information and knowledge are key strategic resources for social and economic development. Information Communication Technologies (ICTs) are seen as important tools in rural development, assisting in enabling change through economic development. In rural areas where ICT infrastructure is limited wireless...

    Provided By Rhodes University

  • White Papers // Jan 2011

    A Baseline Numeric Analysis of Network Telescope Data for Network Incident Discovery

    This paper investigates the value of Network Telescope data as a mechanism for network incident discovery by considering data summarization, simple heuristic identification and deviations from previously observed traffic distributions. It is important to note that the traffic observed is obtained from a Network Telescope and thus does not experience...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Bandwidth Management and Monitoring for Community Networks

    This paper describes a custom-built system to replace existing routing solutions within an identified community network. The community network in question shares a VSAT Internet connection to provide Internet access to a number of schools and their surrounding communities. This connection provides a limited resource which needs to be managed...

    Provided By Rhodes University

  • White Papers // Jul 2010

    Towards Service Capability Interaction Management in IMS Networks

    For a long time, IP Multimedia Subsystem (IMS) services have been developed and deployed in a manner that does not carefully consider how these services can interact with each other in a beneficial way. Services can often overlap in terms of the logic that they execute, causing pockets of redundant...

    Provided By Rhodes University

  • White Papers // Jun 2010

    Control Protocol Translation for Device Interoperability in the Context of Ethernet AVB

    With the introduction of Ethernet Audio Video Bridging (AVB) technology, there is an opportunity for deterministic transmission of data over Ethernet. The guaranteed transmission of data using the AVB technology will enable streaming of media (audio/video) alongside non-media data on the same Ethernet network. Each pro-audio device within a digital...

    Provided By Rhodes University

  • White Papers // Aug 2011

    An Evaluation of Trading Bands as Indicators for Network Telescope Datasets

    Large scale viral outbreaks such as Conficker, the Code Red worm and the Witty worm illustrate the importance of monitoring malevolent activity on the Internet. Careful monitoring of anomalous traffic allows organizations to react appropriately and in a timely fashion to minimize economic damage. Network telescopes, a type of Internet...

    Provided By Rhodes University