The vice cluster-head charges for the communication with base station.
副簇头负责与基站进行通信。
Secondly, this thesis presents a mixed cluster-head selection algorithm (LEACH-M).
本文接着提出了能量高效的混合式簇首选举算法LEACH-M。
Firstly, we've divided the CR users into some clusters and chosen the cluster-head nodes.
首先，我们将认知用户分为若干个簇，并选出簇头节点。
And cluster is stable for a while until it obtains certain conditions whose cluster-head changes in-cluster.
分簇完成后，簇固定工作一段时间，簇头在簇内轮换，达到相应的条件后再重新分簇；
Because energy threshold decides to when cluster-head rotation happens, the selection of threshold is critical.
因为簇头何时轮转由能量阈值决定，所以阈值的选取非常关键。
The remaining energy and the position of the sensor node were taken as the parameter to optimize the process of cluster-head selection.
本文主要针对无线传感器网络能量高效的簇首选举算法和最优簇数的选择进行研究。
The CR users in the same cluster make a cluster decision together, and then the cluster-head nodes conduct a communication to make the global sensing decision.
在同一个簇中的认知用户，共同做出一个簇判决，之后，各个簇头节点进行通信做出全局判决。
In order to solve this security problem, cognitive radio networks are divided into single-hop clustering structure, and cluster-head is designed to detect malicious nodes.
为了解决这个问题，将认知无线电网络分成单跳有簇头结构，通过簇头检测恶意节点。
And the performance of the system would be improved by decreasing the whole communicate energy between the cluster-head and the cluster member and decreasing the average time-delay.
通过降低系统内簇头与簇内节点之间通信的总能量和平均传输时延来提高网络的生命周期。
The node that can logically communicate with the nodes in other clusters has the ability to be gateway, and the set of these nodes is defined as gateway dominating set relative to cluster-head.
逻辑上能和其他簇内节点通信的节点都可以做网关，这些节点相对于簇首节点称为网关支配集。
If your servers are pooled in a compute cluster, the head node is the only crucial machine; the rest can start and stop and crash freely.
如果服务器部署在计算机集群中，那么最前端的节点是惟一的关键机器；其他机器可以随意启动和停止，崩溃了也不要紧。
Remarkably, the ion tail easily stretches past background star cluster NGC 1245 (upper left) in the constellation Perseus, about 1.5 degrees from the comet's lovely greenish head or coma.
明显地，离子彗尾轻易伸展至背景星团NGC 1245（上左）的前面，在飞马座，离彗星可爱的绿色彗头或彗发1.5度。
While the timer reaches 0, the node becomes Cluster Head spontaneously.
时间率先衰减到0的节点则主动成为簇头。
In GAF, the network is divided into several grids, in which one node is chosen as the cluster head to represent the whole grid to communicate with other grids.
它将网络划分成若干个单元格，同一单元格内推举一个节点作为簇头，代替整个单元格实现通信功能。
The improvement of LEACH is based on power and distance between cluster head. Both of the algorithms were emulated in Matlab.
基于经典的LEACH路由算法，提出了改进主要体现在对能量和簇头间距的考虑上。
The cluster head is selected through an improved four color algorithm to build up the logical structure of the network, it can significantly less overlap.
通过用改进的四色算法选举簇头，并建立网络逻辑簇结构，使网络簇的逻辑结构更加合理。
While selecting the cluster head, the principle of protecting the lowest energy node should be followed, the selected cluster head should be as close as the lowest energy node.
簇头选择时，遵循保护最低能量节点的原则，即要求所选簇头尽量靠近剩余能量最低的节点。
Woods picked up sticks on the ground, along the gravel-paved road into the trees, the road extended to a cluster of spire were touched his head, curled up and whipped.
呜兹拿起地上的木棒，沿着碎石铺成的小路走进树丛，伸展到路上的一丛细叶被他的脑袋一碰，嗖地卷曲了起来。
A query register mechanism is proposed to enhance the cluster head nodes ability of resource discovery.
提出了查询登记机制，以提高簇头节点资源发现能力。
The cluster head manages to distribute resource in cluster and communication of clusters.
簇头负责管理簇内资源分配和簇之间通信。
Results Although the balance of the members of the energy consumption between nodes, but did not take into account the energy consumption among cluster head balance.
结果虽然均衡了成员节点之间的能量消耗，但是没有考虑到簇头间的能量消耗均衡问题。
When the cluster head dies out, the network will be reestablished, and stability of the network will be reduced.
现有分簇算法一般只选取一个簇头，有簇头消亡便要重建网络，导致网络稳定性不好。
The algorithm optimizes the selecting form of the cluster head and gateway and operates with fast convergence and low cost.
该算法对簇头和网关的选取方式都进行了优化，收敛速度快，控制开销小。
This algorithm makes the communications consumed lower between the cluster head nodes, the simulation results show the feasibility and effectiveness of this algorithm.
该算法使得簇头节点间通信代价耗费降低，仿真结果说明了该算法的可行性和有效性。
The basic thinking of the algorithm is to prolong the lifetime of WSN, which is on the basis of the dynamic election of cluster head, the rebuilding of cluster, and the energy control.
其基本思想是在动态簇首选举和簇重组的基础上，结合能量控制过程，以更好的降低和节约节点能耗，延长网络生命期。
The proposed localization algorithm first generates clusters and a spanning tree consisting of cluster heads, and then the cluster head computes local coordinates of all member nodes in the cluster.
着重设计了一种基于二跳生成树的可扩展分簇定位算法。首先对传感器网络进行分簇、并利用簇头节点构造一个二跳生成树；
To reduce false alarm rate, the cluster head carries out second diagnosis mechanisms for malicious after the monitor node found out it.
为了减小误检率，巡查节点检测出信誉度为零的恶意节点后，需要簇头节点对其进行二次诊断。
Based on LEACH and PEGASIS algorithm, this paper proposes an assistant cluster head algorithm in Wireless Sensor Networks (WSN).
研究LEACH和PEGASIS协议，提出一种无线传感器网络中的助理簇头分簇算法。
The cluster head is selected through four color algorithm as to build up the logical structure of the network, it can significantly less overlap.
通过用四色算法选举簇头，并建立网络逻辑簇结构，使网络簇的逻辑结构更加合理。
The new protocol finds the path to the cluster head with the minimum cost, using an algorithm similar to flooding to propagate the cost information and greedy algorithm to find the lowest cost link;
节点根据能量消耗的代价来选择至簇头的路由，通过扩散算法来广播代价消息，采用贪婪算法来选择能量消耗最小的路径；
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