in the new round begin, the choose of cluster head node is based on the current energy value in a cluster.
在新的一轮开始时,簇内簇头节点的选择基于节点的当前能量值。
private subnet configuration between head node and compute nodes.
配置头节点和计算节点之间的子网。
when the digit number for the root is not 1, the humane drawing of a suffix tree includes a head node with an edge to the former root. this edge is labeled with the digits that are skipped over.