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Smartphone theft is a non-negligible problem that causes serious concerns on personal property, privacy, and public security. The existing solutions to this problem either provide only functions like retrieving a phone, or require dedicated hardware to detect thefts. How to protect smartphones from being stolen at all times is still an open problem. In this paper, we propose iGuard, a real-time anti-theft...
The ATIS (Abyss Twisted-pair Imaging System) and FITS (Fiber-optical Instrumentation Towed System) were developed for real-time observing on the sea floor around the gas hydrate seeps, while the V-corer (Video-guided multi-corer) was for effective sediment collection. Considering that the CTD (Conductivity, Temperature, and Depth) winch is a standard equipment on most of the research vessels, the...
Driven by the proliferation of mobile applications, the conflict between data communication requirement and limited battery capacity is becoming sharp on modern smartphones. Offloading mobile traffic from cellular to WiFi is widely recognized as a viable solution to improve the energy efficiency. However, through extensive field experiments, we find WiFi offloading is not always energy efficient and...
Emergency navigation is an emerging application of wireless sensor networks with significant research and social value. In order to ensure the safe and timely navigation of the evacuees, most of the existing works model navigation as a path-planning problem or movement decision support problem and adopt different metrics, such as the shortest route, the minimum exposure path, and the maximum safe...
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