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本文研究了无线Mesh网络的结构和特点,以及入侵检测系统(IDS)在构建安全WMN中不可替代的作用。深入分析了AdHoc网络IDS、跨层和网络故障检测技术特点以及无线Mesh网络自身的安全需求。在此基础上,本文结合网络故障检测与跨层技术提出了一种基于代理的非对称分布式协作IDS结构,对代理模块设计原则进行了详细分析。最后以MAC自私行为攻击为例对该结构进行了模拟。结果显示,该结构能够很好地适应无线Mesh网络。 相似文献
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Metallic ring-shaped nanotube arrays are proposed and its optical transmission properties are studied by using finite-difference time-domain (FDTD) method. Compared with the transmission spectra of conventional circular nanotube arrays, two photonic band gaps are emerged in the transmission spectra offing-shaped nanotube arrays, the two band gaps and transmission spectra are adjusted by the length, inner radius, intertube spacing and the dielectric constants of the core and embedding medium, and magnitude modification, redshift and blueshift of the resonance modes are observed. A metallic ring-shaped nanotube arrays for subwavelength band-stop filter in the range of visible light can be achieved. To understand its physical origin, field-interference mechanism was suggested by the field distributions. The proposed nanostructures and results may have great potential applications in subwavelength near-field optics. 相似文献
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采用荧光染料Oxazine-720作掺杂剂,对聚乙烯基咔唑(PVCz)进行了掺杂,研究了掺杂溶液浓度,掺杂渐度和掺杂时间对掺杂PVCz膜发光性能的影响,旨在制备高发光效率和发光强度的PVCz膜。 相似文献
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研究了不同型号涂炭胶上胶量对导电化海绵电阻的影响及在114℃温度下各种涂炭胶干燥时间与电阻的关系,得出1#涂炭胶更适合海绵导电化处理. 相似文献
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安徽电建二公司实施人才强企战略,积极倡导“企业以员工为本,员工以企业为家”的理念,公司通过评选青年岗位能手、举办职工职业技能培训班、开展导师带徒等活动,培育职工“忠诚、责任、奉献”的核心价值观,促进工程建设的稳步发展。 相似文献
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