查询词典 group scheme

In this paper, the focus is to design a lightweight group key management scheme to safeguard the data packets passing on the sensor networks under different types of attacks.

本文的主要任务是研究和实现一种有效的基于分簇分层结构网络模型的密钥管理机制。

We present an efficient group key management scheme for resourcelimited sensor networks.

对传感器网络安全基础设施–密钥管理的研究。

That suggests biology has only scratched the surface of isopod diversity—and in the grand scheme of things, isopods are a pretty obscure group.

这表明现今的生物学仅触及了等足类动物多样性问题的表面，并且，从更高的层面来看，等足类动物仅是一个微不足道的群体。

Thus,Route 1 was not able to continue.In Route 2,the methyl groups of 6 could be developed from cyanos by different pathways individually(Scheme 5).In this thesis,we have completed the protection of one ketone group of 11,and further synthesis is currently under investigation.

在类似物的合成研究过程中，我们还取得了如下成果：(1)通过对中间体8的合成，发展了一种四氧化三铅现场氧化酚成醌，并进一步催化醌参与(来源：Af6BC论文网www.abclunwen.com)的Diels-Alder反应一锅化的方法。

In this paper,a threshold authentication scheme of ad hoe network based on elliptic curve is proposed,in using Lagrange Theorem to generate the group key and in using the digital signature algorithm based on elliptic curve to generate and merge the sub certificates.

论文提出一种基于椭圆曲线的门限身份认证方案，利用拉格朗日定理生成群密钥并利用椭圆曲线数字签名算法生成子证书并合成，该算法的安全性、高效率以及低计算复杂度特别适合Ad hoc网络移动自组的特点。

In order to ensure the security of hierarchical wireless sensor networks, the refined key link tree based group key management scheme is proposed.

5针对层次结构无线传感器网络的安全，提出了一种基于改进****链接树的动态****管理方案。

Besides, the proposed group signature scheme was long in length and the signatures of the same signer are linkable.

除此之外，所构造的群签名方案本身也存在签名长度过长、同一签名成员的签名存在关联性的缺陷。

In this scheme weak voltage area are determined by the network sensitivity index method; Considering the relation between low voltage level and voltage collapse, it is put forward that the voltage magnitude variation rate is taken as the observed information for the grouping of weak voltage buses and weak voltage grouping are given; Taking geographic factors into consideration, a fuzzy maximal tree is established to group the weak voltage buses. The method to measure the incomplete observability of buses and the flow chart of PMU configuration are given.

应用网损灵敏度法来判断电压崩溃临界点和电压薄弱区域；考虑低电压水平与电压崩溃的关系，提出将电压幅值变化率作为电压薄弱母线分群所观察的信息，并且给出了电压薄弱分群指标，兼顾地域因素，采用模糊最大树聚类法将电压薄弱母线分群；给出了母线非完全可观测程度的度量方法以及 PMU 的配置流程。

This paper reviews recent advances in myriapod phylogenetics and presents a preliminary phylochronologic scheme of the evolutionary events in early my-riapods with the following observations: 1） Myriapoda might have diverged from its sister group during late Cambrian or earlier.

精确的多足动物亚门谱系发生关系以及谱系年代学细节还有待于进一步综合系统学、多基因和多重化石参照点的合理分析加以深入和完善，进而为早期陆地复杂生态系统的建立提供新的证据。

As a result, there are no specific advantages of processing signals in frequency domain, and we propose to directly process signals in time domain. By this way, it is observed that in time domain the signal signatures can be arranged into groups of orthogonal components, leading to a very natural group-wise symbol recovery scheme. To realize this figure of merit, we propose a GSC-based receiver, which also takes into account the mitigation of channel mismatch effects caused by the channel temporal variation and the imperfect estimation.

因此，吾人提出直接於时域中处理讯号，於时域中，吾人发现讯号特徵矩阵能够被分为数个拥有正交元素的群组，能自然地被用来设计群组式讯号侦测技术，为了实现此特性吾人提出一个GSC接收机，其能同时抑制通道时间变化与通道估计错误所产生之通道偏差效应。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。