讨论了Ad Hoc DYMO路由协议的演进和其路由协议的工作原理,采用ns2仿真实验的方法,对暂停时间变化下的DYMO路由协议和相关的AODV,DSR路由协议进行了平均时延、平均跳数、包传递率和路由负荷分析,结果表明DYMO路由协议在平均时延和平均...讨论了Ad Hoc DYMO路由协议的演进和其路由协议的工作原理,采用ns2仿真实验的方法,对暂停时间变化下的DYMO路由协议和相关的AODV,DSR路由协议进行了平均时延、平均跳数、包传递率和路由负荷分析,结果表明DYMO路由协议在平均时延和平均跳数上性能优于AODV和DSR路由协议,但在包传递率和路由负荷上其性能参数低于AODV和DSR路由协议.展开更多
Wireless sensor networks are challenging networks regarding communication because of its resource constrained nature and dynamic network topology. Plenty of research has being going on throughout the world to optimize...Wireless sensor networks are challenging networks regarding communication because of its resource constrained nature and dynamic network topology. Plenty of research has being going on throughout the world to optimize communication cost and overhead due to it in the ad hoc networks, thus efforts are being made to make the communications more energy efficient. The application spectrum and use cases of wireless sensor networks includes many critical applications as environmental monitoring, to resource monitoring, to Industrial measurements, to public safety applications and last but not the least to sensitive applications as military sector applications .The erratic size of such networks and along with its exotic topology pose a magnificent set of challenges to the routing algorithms designed and implemented within such networks. The present work concentrates on the comparative analysis of some of reactive and proactive protocols used in the wireless sensor networks. The parameter for comparative analysis is the energy consumption for different simulation time and for different mobility conditions based scenario.展开更多
This study seeks to develop a scientific understanding of the effects of dynamic loading history on the low-yield-strength shear panel damper （LYSPD） mechanical properties and fatigue performance. The LYSPD model is...This study seeks to develop a scientific understanding of the effects of dynamic loading history on the low-yield-strength shear panel damper （LYSPD） mechanical properties and fatigue performance. The LYSPD model is supposed as perfect elastic-plastic without strength deterioration. By adjusting the damper strength with the above supposition in the DYMO software, the serial earthquake response waves of the LYSPD under different soil conditions are obtained firstly. Subsequently, several waves, the most prone to damage at each soil condition. are selected as dynamic loading waves to verify the LYSPD dynamic performances experimentally. The test re- sults suggest that the dynamic loading histories have no influence on the LYSPD strength or the supposed model while they affect the fatigue performance. The applicability and accuracy of three fatigue evaluation metbods, cumulative plastic shear strain, cumulative energy absorption and Miner rule, are also compared according t,o the test results.展开更多
文摘讨论了Ad Hoc DYMO路由协议的演进和其路由协议的工作原理,采用ns2仿真实验的方法,对暂停时间变化下的DYMO路由协议和相关的AODV,DSR路由协议进行了平均时延、平均跳数、包传递率和路由负荷分析,结果表明DYMO路由协议在平均时延和平均跳数上性能优于AODV和DSR路由协议,但在包传递率和路由负荷上其性能参数低于AODV和DSR路由协议.
文摘Wireless sensor networks are challenging networks regarding communication because of its resource constrained nature and dynamic network topology. Plenty of research has being going on throughout the world to optimize communication cost and overhead due to it in the ad hoc networks, thus efforts are being made to make the communications more energy efficient. The application spectrum and use cases of wireless sensor networks includes many critical applications as environmental monitoring, to resource monitoring, to Industrial measurements, to public safety applications and last but not the least to sensitive applications as military sector applications .The erratic size of such networks and along with its exotic topology pose a magnificent set of challenges to the routing algorithms designed and implemented within such networks. The present work concentrates on the comparative analysis of some of reactive and proactive protocols used in the wireless sensor networks. The parameter for comparative analysis is the energy consumption for different simulation time and for different mobility conditions based scenario.
文摘This study seeks to develop a scientific understanding of the effects of dynamic loading history on the low-yield-strength shear panel damper （LYSPD） mechanical properties and fatigue performance. The LYSPD model is supposed as perfect elastic-plastic without strength deterioration. By adjusting the damper strength with the above supposition in the DYMO software, the serial earthquake response waves of the LYSPD under different soil conditions are obtained firstly. Subsequently, several waves, the most prone to damage at each soil condition. are selected as dynamic loading waves to verify the LYSPD dynamic performances experimentally. The test re- sults suggest that the dynamic loading histories have no influence on the LYSPD strength or the supposed model while they affect the fatigue performance. The applicability and accuracy of three fatigue evaluation metbods, cumulative plastic shear strain, cumulative energy absorption and Miner rule, are also compared according t,o the test results.
