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The minimum duration signal necessary to identify a set of spoken words was established by the gating technique; most words could be identified before their acoustic offset. Gated words were used as congruous and incongruous sentence completions, and isolation points established in the gating experiment were compared with the time course of semantic(More)
Over the last decade, the world has faced a rapidly expanding and dynamic threat environment. As demonstrated by the 9/11 and 26/11 terrorist attacks, adversary capabilities have evolved to include advanced tactics and increased militancy. For the Department of Energy's National Nuclear Security Administration (DOE/NNSA), and other organizations responsible(More)
In this paper, we present methods to detect and recover from sensor failure in dense wireless sensor networks. In order to extend the lifetime of a sensor network while maintaining coverage, a minimal subset of the deployed sensors are kept active while the other sensors can enter a low power sleep state. Several distributed algorithms for coverage have(More)
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