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Deploying IP telephony or voice over IP (VoIP) is a major and challenging task. This paper describes an analytical design and planning simulator to assess the readiness of existing IP networks for the deployment of VoIP. The analytical simulator utilizes techniques used for network flows and queueing network analysis to compute two key performance bounds(More)
E-commerce systems are an important new application area in which maintaining good performance under scaling workloads is crucial to business success. The TPC-W benchmark is a benchmark designed to exercise a web server and associated transaction processing system in representative e-commerce scenarios. Whilst the benchmark specifies the architecture of the(More)
In a pervasive system it is essential to understand the intent of the user in order to predict his/her future behaviour. This in turn will help to minimise the user's administrative overheads and assist the user to achieve his/her goals. The aim of this paper is to present some aspects of how user intent may be handled. It focuses on the architecture(More)
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