查询词典 Petersen

In this master thesis, we mainly discuss the adjacent vertex- distinguishing total chromatic numbers of some special graphs and prove that Zhang"s conjecture holds for these graphs. Then we get the adjacent vertex-distinguishing total chromatic numbers of the Halin Graphs. Moreover, we investigate the Generalized Petersen Graphs, prove that some classes of positive integers can"t structure the Generalized Petersen Graphs and get the result that the adjacent vertex-distinguishing total chromatic number is 5. Finally, based on the number and the parity of circles contained by the graph, we get the adjacent vertex-distinguishing total chromatic number of two classes of graphs.

本学位论文首先主要针对几个特殊图类讨论其邻点可区别全色数，验证了其满足图的邻点可区别全色数的猜想；再证明了非轮的Halin图的邻点可区别全色数；接着研究的是广义Petersen图，讨论了不能构成广义Petersen图的几类正整数，并证明了该图的邻点可区别全色数等于5；最后，根据图所含圈的个数及其奇偶性得到了两类图的邻点可区别全色数。

In an interview with VOA, Jessen-Petersen called on ethnic Albanian politicians to reach out to the Serb minority.

在接受VOA的采访过程中，Jessen petersen号召阿尔巴尼亚的政客们与塞尔维亚少数民族加强联系。

In this paper, firstly, the embeddability of near-triangular graphs on the orientable surface is studied. By using Petersen's Theorem about 1-factor, we first prove that for a near-triangulation on the orientable surface, its geometry dual graph has a 1-factor; then after a procedure of operation leaded by the 1-factor, we show that if a graph G triangulates some orientable surface S_g, then G has a near-triangular embedding in S_h for h = g,g + 1,...,β(G/2」, where β is the Betti number of G. Hence we obtain a conclusion: A near-triangulation of the orientable surface is upper-embeddable. As a generalization, a class of near-quadrangulation is studied, and similar results are obtained.

本文首先研究了近三角剖分图的可定向曲面嵌入性质，通过运用Petersen关于1-因子的定理，首先证明了对于可定向曲面上的三角剖分图，其几何对偶图具有1-因子；然后在1-因子的导向下，通过做一系列增加亏格的手术，证明了如果一个图G三角剖分可定向曲面S_g，那么G可以近三角剖分可定向曲面S_h，这里h=g，g+1，…，「β(G／2」，β是指图G的Betti数，从而得出推论：可定向曲面上的三角剖分图是上可嵌入的，作为推广，又研究了一类近四角剖分图的可定向曲面嵌入性质，并得到类似的结论。

Petersen's catchphrase for this effort is "no secret software for public sensing data."

Petersen为这个项目所取的口号就是"没有用于公共检测数据的秘密软件。"

It also gives the crossing numbers relation between Circulant Graphs Cn(1,k) and generalized Petersen graphs.

本文还给出了循环图C_n(1，k)和广义Petersen图P的交叉数关系。

Enrique Eskenazi, a grandee of the private sector and the controlling shareholder in Banco Santa Cruz, argues that politics and business are so closely linked in Argentina because the country lacks the institutions that ought to separate them. In 2007 his company, Grupo Petersen, bought a 14.9% stake in YPF from Spain's Repsol, which wanted a well-connected local partner for its troubled investment.

民营企业大亨和Santa Cruz银行的最大股东Enrique Eskenazi认为，政商关系在阿根廷向来是紧密挂勾，因为国家乏缺一个将他们完全分离的体制。2007年，他的公司Grupo Petersen从西班牙Repsol石油购买YPF石油14.9%的股份，因为Repsol石油想要为自己的盲目投资找一个关系良好的本地合伙人接手。

A few days later, Petersen, his daughter, and the neighbor all had West Nile.

几天后， Lyle Petersen、他的女儿和邻居都感染上了西尼罗热。

Petersen's main message was in regard to the balance between privacy and security.

Petersen传达的主要意思是如何在隐私和安全之间求得平衡。

Petersen largely pays attention to nanotech, but she also draws connections between technology and how it's used.

Petersen的注意力主要放在纳米技术上，不过她也研究技术与如何使用之间的联系。

That year, Petersen learned the hard way how unforgiving the virus can be.

那一年， Lyle Petersen痛苦地了解到了病毒是如何无情的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。