针对泛在互联车辆传感器网络的特点,提出了一种基于位置和定向扩散机制的泛在互联车辆传感器网络混合逻辑拓扑结构HLT-L&DD(hybrid logical topology based on location and directed diffusion mechanism),并给出了形成HLT-L&D...针对泛在互联车辆传感器网络的特点,提出了一种基于位置和定向扩散机制的泛在互联车辆传感器网络混合逻辑拓扑结构HLT-L&DD(hybrid logical topology based on location and directed diffusion mechanism),并给出了形成HLT-L&DD的控制方法。在HLT-L&DD中,各路边节点根据任务需求自定为簇首,以其位置信息作为其所在分簇的簇标识ID,并以定向扩散机制分布式启动分簇过程,逐跳吸纳跳数距离近的车辆节点加入本簇,不同的路边节点独立形成若干个分簇;各相邻分簇之间通过边沿节点的定向扩散机制实现彼此相联,最终将各独立分簇互联成一个完整的混合逻辑拓扑结构HLT-L&DD。HLT-L&DD是平面逻辑拓扑结构与层次型逻辑拓扑结构的混合拓扑结构,既便于车辆传感器网络节点的泛在自组成网、分区自治,也便于路边节点与其他诸如Internet等传统网络的泛在互联。理论分析和仿真结果表明,HLT-L&DD有利于减小泛在互联车辆传感器网络逻辑拓扑结构建立与动态维护的时间开销,以及提高网络的实时连通性,从而优化泛在互联车辆传感器网络的综合性能。展开更多
Considering the problems of classical structure parameters that existed in the study of quantitative structure activity relationship (QSAR). Two new groups of autocorrelation topological indexes V(t), E(t), (P(t)) and...Considering the problems of classical structure parameters that existed in the study of quantitative structure activity relationship (QSAR). Two new groups of autocorrelation topological indexes V(t), E(t), (P(t)) and A(t), B(t), C(t), D(t) were developed on the basis of molecular topology and autocorrelation function in mathematics. The first group were obtained from Van der Waals volume, electronegativity and topological vertex degree;and the second group were obtained from the different combination of topological vertex degree.Corresponding softwares of ATIJP and ATITP have been developed for calculating these two new groups of indexes. Better results have been obtained from the application of these indexes in QSAR study.展开更多
文摘针对泛在互联车辆传感器网络的特点,提出了一种基于位置和定向扩散机制的泛在互联车辆传感器网络混合逻辑拓扑结构HLT-L&DD(hybrid logical topology based on location and directed diffusion mechanism),并给出了形成HLT-L&DD的控制方法。在HLT-L&DD中,各路边节点根据任务需求自定为簇首,以其位置信息作为其所在分簇的簇标识ID,并以定向扩散机制分布式启动分簇过程,逐跳吸纳跳数距离近的车辆节点加入本簇,不同的路边节点独立形成若干个分簇;各相邻分簇之间通过边沿节点的定向扩散机制实现彼此相联,最终将各独立分簇互联成一个完整的混合逻辑拓扑结构HLT-L&DD。HLT-L&DD是平面逻辑拓扑结构与层次型逻辑拓扑结构的混合拓扑结构,既便于车辆传感器网络节点的泛在自组成网、分区自治,也便于路边节点与其他诸如Internet等传统网络的泛在互联。理论分析和仿真结果表明,HLT-L&DD有利于减小泛在互联车辆传感器网络逻辑拓扑结构建立与动态维护的时间开销,以及提高网络的实时连通性,从而优化泛在互联车辆传感器网络的综合性能。
文摘Considering the problems of classical structure parameters that existed in the study of quantitative structure activity relationship (QSAR). Two new groups of autocorrelation topological indexes V(t), E(t), (P(t)) and A(t), B(t), C(t), D(t) were developed on the basis of molecular topology and autocorrelation function in mathematics. The first group were obtained from Van der Waals volume, electronegativity and topological vertex degree;and the second group were obtained from the different combination of topological vertex degree.Corresponding softwares of ATIJP and ATITP have been developed for calculating these two new groups of indexes. Better results have been obtained from the application of these indexes in QSAR study.
