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节点有自环的网络流数学模型 被引量:2
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作者 徐光联 《数学的实践与认识》 CSCD 北大核心 2011年第17期148-156,共9页
以网络流中节点有自环的情形为对象进行研究,把节点分开为入点和出点,节点自环转换为流量相同,方向相反的两条弧,改进了网络流数学模型.改进后的数学模型在处理原来网络流中节点发生异常情况时,即节点不遵守流量守恒条件时,其节点自环... 以网络流中节点有自环的情形为对象进行研究,把节点分开为入点和出点,节点自环转换为流量相同,方向相反的两条弧,改进了网络流数学模型.改进后的数学模型在处理原来网络流中节点发生异常情况时,即节点不遵守流量守恒条件时,其节点自环的流能够起特殊的调节作用.在描述网络流异常状态时,给出了网络流状态周期的阶跃性质.通过网络模型对应的邻接矩阵对网络流进行计算和监控,给出一个节点环流的应用实例. 展开更多
关键词 网络流 节点自环 邻接矩阵 状态周期
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A Secure-Efficient Data Collection Algorithm Based on Self-Adaptive Sensing Model in Mobile Internet of Vehicles 被引量:1
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作者 LIANG Wei RUAN Zhiqiang +1 位作者 TANG Mingdong LI Peng 《China Communications》 SCIE CSCD 2016年第2期121-129,共9页
Existing research on data collection using wireless mobile vehicle network emphasizes the reliable delivery of information.However,other performance requirements such as life cycle of nodes,stability and security are ... Existing research on data collection using wireless mobile vehicle network emphasizes the reliable delivery of information.However,other performance requirements such as life cycle of nodes,stability and security are not set as primary design objectives.This makes data collection ability of vehicular nodes in real application environment inferior.By considering the features of nodes in wireless IoV,such as large scales of deployment,volatility and low time delay,an efficient data collection algorithm is proposed for mobile vehicle network environment.An adaptive sensing model is designed to establish vehicular data collection protocol.The protocol adopts group management in model communication.The vehicular sensing node in group can adjust network sensing chain according to sensing distance threshold with surrounding nodes.It will dynamically choose a combination of network sensing chains on basis of remaining energy and location characteristics of surrounding nodes.In addition,secure data collection between sensing nodes is undertaken as well.The simulation and experiments show that the vehicular node can realize secure and real-time data collection.Moreover,the proposed algorithm is superior in vehicular network life cycle,power consumption and reliability of data collection by comparing to other algorithms. 展开更多
关键词 wireless vehicle network datacollection protocol network sensing chain self'-adaptive sensing sensing distance threshold.
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