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In fact, on one hand, it is often found that two graphs with the same number of verticesand the same connectivity(edge-connectivity) may result in entirely different forms after a minimum disconnecting set of vertices is removed, one may be totally disconnected while the other may consist of a few very stable components, and thus be much easier to reconstruct.On the other hand, we often face this question: how easily can we disrupt a system at the least cost, on the contrary, when we set up a system, especially a communication system, we try our best to make it as stable as possible that it can be reconstructed easily if it do get disrupted .

对于两个具有相同点数，具有相同点连通度的图，从图中分别去掉使图不连通的点集后，所得图的结构可能完全不同，这是因为点连通度、边连通度和局部点、边连通度等连通性参数仅反映了系统被破坏的难易程度，而对系统遭受破坏的程度并没有明确的反映。

Interference images are produced by a Michelson interferometer, which used a bromine tungsten lamp as the light source. A Kretschmann prism configuration is used to stimulate SPR. The reflected biochip images are recorded by a CCD camera. Spectral images which are obtained through Fourier transform of the interference images, are analyzed and processed to get SPR curves.

系统以溴钨灯为迈克尔逊干涉仪的光源产生干涉图像，采用Kreschmann棱镜耦合结构激励SPR，由CCD摄像机采集传感芯片干涉图，对干涉图进行信息提取和傅里叶变换得到光谱图，再对光谱图进行分析处理得到SPR曲线。

This system can complete quickly,the realtime parametric design of turbojet,turbofan,turboprop and turboshaft engine and its parts.During designing the required information,data and structural graphics can be inquired interactively from Aeroengine Information Database and Structure Database.

该系统可以实现对涡喷、涡扇、涡轴和涡桨航空发动机部件图和总图的参数化实时设计，在参数化设计过程中提供发动机信息数据库、结构数据库的交互式查询，为设计提供所需的信息、数据和结构图形支持，可达到快速地生成供方案论证应用的各种航空发动机部件图、总图及各种信息，能快速实现多方案对比设计。

This method mainly studies the change detection based on the judge of temple and threshold value of the land use class. The land use patch is expressed by vector polygon along with raster region. First the spectrum feature databank with histogram, texture and shape features of the patch is formed. Then, the patches are classified and their change types were judged.

其基本思路是在矢栅位置配准的基础上，以矢量多边形和栅格面阵共同表示的土地利用图斑为基本单位，建立土地类别解译标识，在此基础上对所有图斑进行基于图斑的分类、利用检测模板和阈值来判断图斑类型是否发生变化，并对变化图斑进行表示和更新。

The tree T=is a bichromatic tree subgraph in a maximal plannar graph G, in which the subgraph induced by V_t is a tree and T is a component of some bichromatic subgraph Gij of some 4-coloring of G.

极大平面图G=中的一个二色树子图T=，其Vt在G中导出子图为树，并且图G存在至少一个四着色C，使T是该四着色一个二色子图的一个连通支。

For unicyclic graphs and bicyclic graphs, we showed that the nullity set both are [0,n - 4](n ≥ 5 for unicyclic graphs and n ≥ 6 for bicyclic graphs).

对单圈图和双圈图，我们证明了零维数集均为[0，n-4](单圈图n≥5，双圈图n≥6)。

If G is a {2K_1+K_2, C_4}-free graph, we show thatifα＞3 then G is a split graph, and ifα=3 then for any independentset S of cardinality 3, G-S is a chordal graph or G-S?

如果图G不含与4-圈和2K_1+K_2同构的导出子图，我们证明了如果α＞3，那么G是一个split图；如果α=3，那么对于G的任一个有三个元素的独立集S，G-S是一个弦图或者G-S？

Http://photos.gznet.com/photos/1077167/1077167-tAo5MLwz4G$PERvFtBjZSjnL7ejp4g .gif 幽影六腿马没有图图……幽影树怪图图: http://photos.gznet.com/photos/1077167/1077167-NP9r$hEBONk5R7szA8z$4plQkqeLkz .gif 新出现的译名 Ephemera 幽影生物 Dusk Beast 双头幽影兽 Ecalypse 幽影六腿马 Discorporate 不稳构造 Umbral Banyan 幽影树怪 Yank upward 猛扯上拉没想到幽影生物一个比一个弱智……——||）-- Griffons make their homes in high places,swooping down with a shrill,eaglelike cry to attack their prey.

伪装：因为当幽影树怪休息时和一般的树木无异，故必须要在它攻击之前通过一次成功的侦察技能检定（DC 25）来发现它的存在。

Firstly, the thesis analyzes the content of behavior consistency of C~4ISR system requirement, researches the theory of behavior consistency validation based on executable model. Secondly, it analyzes the extense form of basic state chart, researches the grammar rules and formal description method of the transition-oriented state chart. Lastly, it brings forward the method for transforming TO_StateChart to Object Petri Net model, and based on executable model, researches the method of validation for behavior consistency between the state chart and sequence diagram.

论文首先对C~4ISR系统需求行为一致性验证的内容进行了分析，研究了基于可执行模型进行行为一致性验证的原理；其次分析了基本状态图的扩展形式，研究了面向转移的状态图(简称为TO_StateChart)的语法规则及其形式化描述方法；最后研究了TO_StateChart转换为对象Petri网模型的方法，并以此为基础，深入研究了基于可执行模型进行状态图和时序图之间行为一致性验证的方法。

We use the character of dynamic conferences, introduce verification secret key set, give the calculation formule of probability of some successful attacks in authentication schemes for dynamic confereices.

在这一部分，我们讨论了网络拓朴结构不是完全图的情形，提出了通信图认证系统，利用图的特征，得出了要使系统充分安全，各用户应掌握的密钥空间的大小，给出了一种构造通信图认证系统的方法。。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。