利用Borel矩阵群以及群论中的半直积方法构建了一个对称性强、直径小、聚集系数高的5正则Borel亚循环图,将无线传感器网络结点嵌入到该亚循环图中,提出了一种确定性的以数据为中心的数据存储及路由算法,并将所设计的拓扑结构与现有的基...利用Borel矩阵群以及群论中的半直积方法构建了一个对称性强、直径小、聚集系数高的5正则Borel亚循环图,将无线传感器网络结点嵌入到该亚循环图中,提出了一种确定性的以数据为中心的数据存储及路由算法,并将所设计的拓扑结构与现有的基于Chord的CSN(Chord for Sensor Networks)以及VRR(Virtual Ring Routing)进行了对比.结果表明,与现有的一些算法相比,所设计的拓扑结构在平均查询长度、路由表大小、平均端到端时延以及能量耗散等方面都有一定优势,有利于延长传感器网络结点的寿命.展开更多
It was generally accepted that manuscript maps,as distinct from printed maps,exhibited no signs of printing and were entirely hand-drawn.Western scholars Christopher Terrell and Tony Campbell were the first to break t...It was generally accepted that manuscript maps,as distinct from printed maps,exhibited no signs of printing and were entirely hand-drawn.Western scholars Christopher Terrell and Tony Campbell were the first to break this stereotype in 1987,followed by Catherine Delano-Smith and Chet Van Duzer who discovered a few Renaissance maps and two Qing dynasty maps that showed use of hand stamps.Inspired by these findings,this paper explores the stamped map signs in ten Chinese maps,three Japanese maps,and three Korean maps.By analyzing each map and each type of stamp,this paper provides more examples of this research,broadens the research horizons and geographical area,and demonstrates that use of stamps in manuscript maps was invented independently among people of different regions and civilizations as a result of human nature.展开更多
文摘利用Borel矩阵群以及群论中的半直积方法构建了一个对称性强、直径小、聚集系数高的5正则Borel亚循环图,将无线传感器网络结点嵌入到该亚循环图中,提出了一种确定性的以数据为中心的数据存储及路由算法,并将所设计的拓扑结构与现有的基于Chord的CSN(Chord for Sensor Networks)以及VRR(Virtual Ring Routing)进行了对比.结果表明,与现有的一些算法相比,所设计的拓扑结构在平均查询长度、路由表大小、平均端到端时延以及能量耗散等方面都有一定优势,有利于延长传感器网络结点的寿命.
文摘It was generally accepted that manuscript maps,as distinct from printed maps,exhibited no signs of printing and were entirely hand-drawn.Western scholars Christopher Terrell and Tony Campbell were the first to break this stereotype in 1987,followed by Catherine Delano-Smith and Chet Van Duzer who discovered a few Renaissance maps and two Qing dynasty maps that showed use of hand stamps.Inspired by these findings,this paper explores the stamped map signs in ten Chinese maps,three Japanese maps,and three Korean maps.By analyzing each map and each type of stamp,this paper provides more examples of this research,broadens the research horizons and geographical area,and demonstrates that use of stamps in manuscript maps was invented independently among people of different regions and civilizations as a result of human nature.
