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Due to the widespread deployment and low cost, WiFi has become one of the most attractive research fields in indoor environments, for example, almost every smart mobile device can be a WiFi signal receiver and transmitter. Various WiFi based indoor localization approaches have been proposed under different circumstances. However, most of them are only suitable for relatively small indoor environments,...
Device-free localization (DFL) is an emerging wireless localization technique where the target does not equip with any electronic tag for communicating with the localization system. It has been found numerous practical applications such as human health and medical care with the help of location detection and behavior analysis, intrusion detection, security safeguard, and emergency rescue. In the DFL...
In recent years, safety problem of bridges becomes a public topic, and threatens people's lives and property; it also has become an indispensable hidden danger. This paper analyzes the main problems existing in the safety management, provides some improving measures, and points out the importance of safety operation on construction sites and its later maintenance and management. In order to ensure...
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