This paper presents a programmable context-aware voice (CAV) service, which enables VoIP services to cope in crisis situations. To prevent the upsurge in traffic normally associated with a crisis from degrading the quality of service for privileged users like emergency workers, the CAV service prevents nonprivileged users from accessing the network during a crisis. This service is built upon th...

As video distribution over optical transport networks becomes more and more important, considerable focus is put on providing the appropriate quality for this transport service. A typical trade-off seen in this context is between sophisticated compression techniques used in order to save required transmission bandwidth, and the sensitivity of service quality with respect to transport network in...

The rapid evolution of (Web) service technologies is leading services to play a central role in the software development process. The number of service-based applications is quickly increasing, and they are subject to continuous evolution to meet ever more demanding requirements, such as: adaptability to different types of devices, optimal exploitation of available resources to achieve a certai...

Cloud computing systems promise to offer subscription-based, enterprise-quality computing services to users worldwide. As the demand for delivering services to a large number of users has increased, they need to offer differentiated services to users and meet their expected quality requirements. Service-Oriented Computing (SOC) enables the alignment of loosely coupled services with different le...

This paper presents the design and system architecture of the Ad hoc Context Aware Network (ACAN), a wireless environment with no pre-configuration and with spontaneous applications running according to the contextual situation. The ACAN is a new vision to the future of the wireless networks where it will consists of sensors that will capture the entities in the environment and the surrounding ...

We propose a general architecture and implementation for the autonomous assessment of quality of arbitrary service elements in the convergent service environments. We describe a quality engine, which is the central component of our proposed architecture of self-aware convergent services of NGSDP. The quality engine combines domain independent statistical analysis and probabilistic reasoning tec...

Service composition is a widely used method in ubiquitous computing that enables accomplishing complex tasks required by users based on elementary (hardware and software) services available in ubiquitous environments. To ensure that users experience the best Quality of Service (QoS) with respect to their quality needs, service composition has to be QoS-aware. Establishing QoS-aware service comp...

In this paper, we show that coding can be used in storage area networks (SANs) to improve various quality of service metrics under normal SAN operating conditions, without requiring additional storage space. For our analysis, we develop a model which captures modern characteristics such as constrained I/O access bandwidth limitations. Using this model, we consider two important cases: single-re...

tourism, combined with the phrase medical, seems to be a new form of tourism which has gained huge popularity in recent decades. though, a number of literatures available with regard to the tourism industry and the competitiveness of the destination, however, the major aspects which determine the satisfaction of medical tourists are hardly focused specifically on malaysia. there is a lack of em...

Recently our research group introduced the notion of Service Enabled Workflow (SEW) with the integration of Semantic Web Service (SWS) and Workflow. In this paper, we present a Service Oriented Architecture (SOA)-based integrated software tool suite called MOSEW that provides functionalities to design and develop ontology based Quality of Service (QoS) aware SEWs.