查询词典 permutation

In chapter four,we have studied the permutation group coset method in calculations of gauge field vertices which can simplified the calculation of gluonic vertices.Using this method we derived the Feynman rules of trilinear vertex and quartic vertex of gauge theory.

第四章给出了规范场顶角计算中的置换群陪集展开方法，利用该方法可以简化胶子顶角的计算，并导出了规范场的三点及四点树图顶角的Feynman规则。

In this dissertation,applying the connection decomposition and the dual assumption, we studied the SU(2)non-Abelian gauge theory and the nonperturbative vacuum of QCD. And we also discussed the permutation group coset method in calculations of gauge field vertices.

本论文主要运用联络分解思想和对偶超导方法来研究SU(2)非阿贝尔规范理论和QCD的非微扰真空，并讨论了利用置换群陪集简化方法来计算规范场顶角问题。

Based on this model, a new crypt structure called completely nonsingular matrix based substitution permutation network is designed.

基于这一模型，设计了一个称为基于全非奇异矩阵的代替置换网络的密码结构。

Linear cryptanalysis is one of the most important attacks of block cipher systems such as Feistel netowrks and substitution-permutation networks.

线性攻击法是针对区块加密系统的最重要的法法之一。

As to cyclic codes over finite chain rings, we study their stucture and develop the Fourier Transform method to finite chain rings. The permutation groups of cyclic codes and their extended codes are investigated using their Mattson-Solomn polynomials.

对于有限链环上的循环码，我们研究了它们的结构，并把傅立叶变换的方法推广到有限链环，用循环码的Mattson-Solomn多项式对循环码及其扩展码的置换群进行了研究。

The permutation groups of cyclic codes and their extended codes are investigated using their Mattson-Solomn polynomials. SDq codes over finite fields are byte-organized and they can correct any single error and dete

有限域上的SD_q码是一类按字节组织的，能纠正发生的所有单个错误，同时能检测发生在同一字节内的两个相邻错误的纠错码；我们对有限域F_q上SD_q码的线对界在q＞3，b＞2时给出了一个改进界。

First, two preprocess algorithms are designed to decompose a communication request set into some continuous cyclic sequences. Then the permutation group is used to represent the ring network with fixed converters and an algorithm is proposed to classify the wavelength channels into some groups.Based on these on these ideas,a wavelength assignment algorithm is presented.For an optical ring with any fixed conversion mode,the algorithm can giv a good assignment scheme.

首先，提出了两个对环网上的请求集合预处理的算法，这两个算法可以将请求集合分解成一些连续的循环序列；然后，采用置换群来描述具有固定波长转换器的光环网，基于这种数学表示，提出了对环网上的波长信道进行分解的算法；基于这些算法，进一步提出了一个波长分配算法，该算法对于环形光网上的任意固定转换模式都能给出一个较好的波长分配方案。

Several important relations are studied between the girth condition and the ACE (approximated cycle extrinsic message degree) spectrum of the QC-LDPC (quasi-cyclic low-density parity-check) codes, where the PCM (parity-check matrices) are defined by the base-matrix and expanded by the cyclic permutation matrices.

研究了基于置换阵的QC-LDPC码圈长分布、ACE分布与对应的基矩阵结构之间的关系。

The tower high about 6 meters, put the brewing water to the deaeration tower to oxygenate directly, adopt CO2 permutation, while completed the deaeration, the deaeration water also to achieve the partial carbonation goal.

塔高约6米，直接将酿造水进入脱氧塔进行脱氧，采用CO2置换，在完成脱氧的同时脱氧水也达到了部分碳酸化目的。

Recently, baidu is more unpredicatable to the permutation of Serp, whether is the acquiescent home page that does not say a website discharged in the first position, the website that still can let you sometimes becomes home page to stand to depilate even.

最近，百度对serp的排列更是变幻莫测，不要说网站的默认首页是否排在第一个位置，有时还能让你的网站成为首页站甚至拔毛。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了