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This paper presents research using simulation to explore the sensitivity of the network lifetime of a Wireless Sensor Network (WSN) under the constraint to maintain a chosen coverage percentage when different aspects of the node model are included. Specifically, they begin with a simple sensor node that can transition between an awake mode and a sleep mode, dependent on meeting the coverage constraint with a simple battery model that expends energy when the node is in the awake mode. They then compare this network behavior to when the battery model includes battery recovery behavior.
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