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- W2054510820 abstract "A rotatable and directional (R&D) sensor is a wireless device that has sector-shaped sensing coverage and rotatable ability. Such sensors can periodically rotate to monitor nearby objects in order to achieve temporal coverage. Specifically, an object is said to be δi-time covered if it can be monitored by R&D sensors for at least δi portion in each period, where 0<δi≤1. Given a set of heterogeneous objects with different δi values, the paper formulates a generalized R&D sensor deployment (GRSD) problem. It determines how to use the minimum number of R&D sensors to accomplish temporal coverage by letting each object be δi-time covered. The GRSD problem is proven to be NP-hard, and an efficient heuristic is developed based on the locations and coverage demands of objects. Experimental results demonstrate that the proposed GRSD heuristic significantly reduces the number of deployed sensors compared with existing methods, under various simulation scenarios." @default.
- W2054510820 created "2016-06-24" @default.
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- W2054510820 date "2015-08-01" @default.
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- W2054510820 title "Deploying R&D sensors to monitor heterogeneous objects and accomplish temporal coverage" @default.
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- W2054510820 doi "https://doi.org/10.1016/j.pmcj.2015.04.002" @default.
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