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沥青路面设计应变指标控制必要性研究 被引量:1
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作者 闫天昊 黄晓明 +1 位作者 刘修宇 曹青青 《现代交通技术》 2017年第3期1-4,23,共5页
现行沥青路面设计规范中的设计指标为层底拉应力和弯沉,而缺少对于应变指标的控制。文章对比分析了应变、应力、弯沉指标的差异性,对不同类型沥青路面设计指标的选取进行了探讨。研究结果表明,应变指标验算点的位置应取在面层中部、基... 现行沥青路面设计规范中的设计指标为层底拉应力和弯沉,而缺少对于应变指标的控制。文章对比分析了应变、应力、弯沉指标的差异性,对不同类型沥青路面设计指标的选取进行了探讨。研究结果表明,应变指标验算点的位置应取在面层中部、基层的顶部和底部;基层模量与应变指标和应力指标、弯沉的关系呈负相关;指出了应变作为控制指标的必要性;路面类型对设计指标的适用性影响较大,设计指标应根据路面类型而进行相应选取。 展开更多
关键词 沥青路面 设计指标 有限元分析 验算点位置
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Node cooperation based location secure verification algorithm in wireless sensor networks localization 被引量:2
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作者 唐弢 Guo Qing +1 位作者 Li Hanqing Peng Bao 《High Technology Letters》 EI CAS 2012年第4期376-381,共6页
For the application of wireless sensor networks in the military field, one of the main challenges is security. To solve the problem of verifying the location claim for a node, a new location verifica- tion algorithm c... For the application of wireless sensor networks in the military field, one of the main challenges is security. To solve the problem of verifying the location claim for a node, a new location verifica- tion algorithm called node cooperation based location secure verification (NCBLSV) algorithm is proposed. NCBLSV could verify malicious nodes by contrasting neighbor nodes and nodes under beam width angle using an adaptive array antenna at a base point. Simulation experiments are con- ducted to evaluate the performance of this algorithm by varying the communication range and the an- tenna beam width angle. Results show that NCBLSV algorithm has high probability of successful ma- licious nodes detection and low probability of false nodes detection. Thus, it is proved that the NCBLSV algorithm is useful and necessary in the wireless sensor networks security. 展开更多
关键词 wireless sensor networks WSNs) node localization SECURE position verifica-tion adaptive array antenna
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