Anna was a vivid literature figure in the international literature history. Besides the obvious social factors of Anna 's tragedy, some internal roots of her tragedy shouldn't be neglected, such as her particular spiritual world, merit and drawback of her character, her love value and conflicts about her thought. Analyzing into internal factors for Anna 's tragedy would offer further appreciation to readers.
针对移动自组网中节点的移动导致数据传输路由经常发生断裂,备份路由并不能保证其可用性,在现有备份路由的基础上加入稳定性考虑,形成了一种加入稳定性的备份按需距离矢量路由协议(back-up stability Ad hoc on-demand distance vector,BSAODV)。改进后的路由协议使用稳定性最高的路由作为主路由进行数据传输,其余路由按稳定从高到低作为备份路由。通过仿真实验对该路由协议在端传输时延、封包到达率等方面进行验证,证明了该协议能提高网络的性能。
