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Recently, some researchers have found that the abounding search engines cannot support exploratory search effectively. In such case, it requires the search engines know better about the imprecise queries provided by the end users. Actually, it's hard for the users to formulate the queries, not alone understand by the engines. However, in our study, we find that the search logs in the web community...
For the grid workflow of DAG with strict time limits, this paper puts forward a new algorithm based on the time prediction model of queuing theory. According to the requirements of workflow execution time submitted by users, this algorithm finds critical path first and then obtains the probability of actual execution time exceeding the limit time which was set by users using Little's law, and then...
SELinux is a strong and flexible system with a well-defined MAC architecture. It provides a mechanism to enforce the access control based on confidentiality and integrity requirements which offers an effective protection of information security. This paper describes in what way SELinux uses various models and policies to secure the information safety which different from others, especially from a...
With mobile terminals and wireless network environment constantly being improved, people are using mobile instant messaging (IM) products more frequently. We provide a novel design based on Jabber and FCAPS model to meet the rapidly growing and changing needs. Jabber provides an open, secure, real-time communication technology. Network management has always been a key aspect of communication networks...
In order to meet the rapidly growing and changing needs of mobile instant messaging (IM), this paper provides a new service model and implementation mechanism based on Jabber and hierarchical thinking. The communication protocol of our system provides an open, expandable, real-time communication technology that can be used to build a wide range of XML applications. We use Linux C++, MySQL, and protocol...
With the rapid advancement of wireless network technologies, Mobile Instant Messaging (IM) has become a major application in the telecommunications industry. Firstly, this paper introduces recent research and development efforts in constructing mobile IM systems. Secondly, it advances a new service model and implementation mechanism based on Jabber/XMPP. The communication protocol of our system provides...
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