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With the properties of openness and dynamic in topology, wireless sensor networks are challenged with great security threats. In this paper we focus on the wormhole attack which is proved to be particularly dangerous to the resource-limited sensor nodes. We present the SA-TC algorithm for detecting and thus defending against this serious threat. It is based on the on-demand multi-path routings and...
Many devices are managed through serial interface nowadays, but if devices controlled are located in different places with administrator, the configuration may be inconvenient. System specified in this paper is a scheme basically for remote control of serial devices. It is an embedded system based on Linux, and it can connect many other serial devices through serial interfaces. With the system, users...
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