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Workflow job is composed of several ordered subtasks which invoke different computing services. These computing services are deployed on geographically distributed servers. Towards Workflow Job Management, how to schedule workflow jobs to achieve high server resource utilization and how to ensure Quality of Service (QoS) pose several challenges. In the paper, an autonomic Performance-Aware Workflow...
Mobile commerce (M-commerce) is an attractive research area due to its relative novelty, rapid growth, and great potential in business applications. Unfortunately, there are a number of constraints effecting both performance and usability of mobile devices and network bandwidth. In addition, existing M-commerce applications are lack of fully automated business processes and still require significant...
Real time process algebra with urgency executing policy can specify the behaviors of real time systems. But in reality, the executing time of real time systems' behavior is not determined to an accurate value. As executing time obey the exponential distribution, stochastic process algebras equip their actions with exponential variable ??. In order to specify real time systems behaviors more accurately,...
In e-science environment researchers can submit complex tasks as scientific workflows. However, because the network may be blocked or even interrupted sometimes, it can hinder the researchers to submit tasks, as well as the overload on the server. Additionally, many tasks submitted by researchers may use the same resources, which may result in the overload of the specific resources. Meanwhile, some...
Scientific collaboration is becoming more and more important in the e-science. As real-time collaborative editing allows geographically distributed users edit a same document synchronously, it could be one of the effective ways to support scientific collaboration. We designed a Scientific Collaborative Editing Environment (SCEE) so as to apply the real-time collaborative editing to the scientific...
Scientific collaboration needs efficiently communication within a team. At the same time, instant messaging (IM) is a popular real-time communication technology on the Internet. Whereas, chemists need to exchange information of chemical structure and chemical-reaction formula in time when doing their research work collaboratively. Thus, an instant messaging system named eChemIM is introduced in this...
E-Research aims to facilitate collaboration across time and distance. Researchers need techniques and tools to support their collaborative work. Groupware is one technique that supports groups of people engaging in a common task over the network. Besides, it is also one of the most effective means to solve the collaboration problem. Existing groupware projects provide fixed functions such as messaging,...
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