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Recently, wireless sensor networks are used in an expanded bulk of utilizations. In this research, a lighting control system is proposed on basis of wireless sensor networks named LACS (Lighting Automatic Control System). This system with the ability of explaining the users' activities, in addition to providing the needed lighting which provides the satisfaction of users, will provide energy saving...
A fundamental function performed by a sensory network is the retrieval of data gathered collectively by sensor nodes. The metrics that measure the efficiency of this data collection process are time and energy. In this paper, we study via simple discrete mathematical models, the statistics of the data collection time in sensory networks. Specifically, we analyze the average minimum delay in collecting...
Nowadays there is great enthusiasm in using Video Sensor Networks in both civilian and military fields. This marks the location awareness of the node as a critical issue. In this paper we present a novel vision based technique that builds up a local relative coordinate system in one-plane video network without using GPS. One sensor node will present the core of the system and it will start locating...
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