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国家自然科学基金(60503018)

作品数:2 被引量:3H指数:1
相关作者:陈华均田文雅更多>>
相关机构:浙江经贸职业技术学院浙江大学更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划浙江省自然科学基金更多>>
相关领域:自动化与计算机技术更多>>

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  • 2篇2007
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Designing reduced beacon trajectory for sensor localization被引量:1
2007年
Localization is one of the substantial issues in wireless sensor networks. The key problem for the mobile beacon localization is how to choose the appropriate beacon trajectory. However, little research has been done on it. In this paper, firstly, we deduce the number of positions for a beacon to send a packet according to the acreage of ROI (region of interest); and next we present a novel method based on virtual force to arrange the positions in arbitrary ROI; then we apply TSP (travelling salesman problem) algorithm to the positions sequence to obtain the optimal touring path, i.e. the reduced beacon trajectory. When a mobile beacon moves along the touring path, sending RF signals at every position, the sensors in ROI can work out their position with trilateration. Experimental results demonstrate that the localization method, based on the beacon reduced path, is efficient and has flexible accuracy.
HUANG Wen-liangLI Shi-jianLIU Duo
基于语义网格的E-learning平台研究被引量:2
2007年
本文以互联网应用的第三次浪潮E-learning为背景,给出了一个基于语义网格技术的E-learning平台的模型架构及其实现方式。该平台有效地解决了E-learning教学中底层信息资源间语义层次的资源共享和动态集成等问题,具有良好的应用前景。
田文雅陈华均
关键词:语义网格RDFOGSA
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