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In delay tolerant networks (DTNs), enabling a node to search and find an interested mobile node is an important function in many applications. However, the movement of nodes in DTNs makes the problem formidable. Current methods in disconnected networks mainly rely on fixed stations and infrastructure-based communication to collect node position information, which is difficult to implement in DTNs...
Civil Experimental System consists of electric-hydraulic servo-controlled machine and the data recorder in which the recorded data are saved. In Electro-hydraulic servo controller, a exterior trigger signal is used to remote control the data recorder working, and the problem of simultaneously data recording is solved by on-line processing of servo testing machine and data recorder, which quicken the...
When a denial-of-service happens, the malicious programs often occupies too much computing resources. A defending schema proposed in this paper can use virtual machine monitor to detect such attack by adapting threshold of available resources. If the defending system assures existence of attack, it will live duplicates the operating system together with the tagged applications to reserved isolated...
The knowledge representing method, question semantic analysis and answer extraction algorithm are very important parts of QA (question answering system). This paper puts forward a framework which can well serve not only the simple question, but also the complex conditional question; can construct and apply ontology to drive Chinese restricted domain QA; and can conveniently extract answer by QSR (question...
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