查询词典 division algorithm

The symmetric algorithm is a traditional algorithm, it is easy and efficient, and so it is still being popular used. The stream cIPher and the block cIPher are two part of the symmetric algorithm. The symmetric algorithm uses the key to control the key stream generator, and then the generator produces a random stream. We can get the cIPher by xor the message and the random stream by bit. In the field of communication and code, the stream cIPher has always been the key cIPher of the military affairs and foreign affairs.

对称密码体制分为序列密码和分组密码两类，序列密码以密钥控制密钥流发生器，产生一随机序列，用这个随机序列和明文信息逐位异或，就得到密文，其加密单元为比特。

After analyzing disadvantages of artificial fish-swarm algorithm and particle swarm optimization algorithm, this paper presents a hybrid algorithm. In the algorithm, AFSA and PSO are regarded as two independent swarms to search in the synchronical way.

在分析人工鱼群算法、粒子群算法存在不足的基础上，提出一种将PSO群与AFSA群作为两个独立进化的群，同时进行搜索的算法。

The thesis analysises the superiority of genetic algorithm in dealing with discreate variables and primal-dual interior point method in dealing with continuous variables, and brings forward a discoupled combined algorithm which is based on the equipment control priority and take advantage of genetic algorithm and primal-dual interior point method, and the emulator of IEEE-30 bus system validates the fesability of the discoupled combined algorithm.

本文分析了遗传算法在处理离散变量和原对偶内点法处理连续变量的优势，提出一种基于设备动作优先级并利用遗传算法和原对偶内点法的解耦组合算法思路，通过IEEE-30节点系统仿真验证了该解耦组合算法的可行性。

A new scheme of target discrimination in SAR images, consisted of frames, models and algorithms, is proposed. Under such a scheme, a global frame, combining orderly the algorithm based on feature extraction and that based on knowledge, is then proposed. Moreover, in the method of target discrimination based on feature extraction, a "loose-coupling" model is given. The existing features are chosen and three new features about the contrast are given under the "loose-coupling". Meanwhile, an algorithm of feature selection based on Genetic Algorithm is also modified to solve the problem that the existing algorithm can not evaluate the goodness-of-features comprehensively. The weighted quadratic distance discriminator is designed to improve the performance of target discrimination. Finally, a method based on the knowledge of target groups to remove clutter false alarms is also given.

提出了一种目标鉴别的新方案，该方案包括目标鉴别的框架、模型以及算法；提出了基于特征选取鉴别和基于编队提取鉴别"序贯"连接相结合的目标鉴别框架；在基于特征选取进行目标鉴别的方法中，提出了目标鉴别的"松耦合"模型；提出了"松耦合"模型下目标鉴别的特征提取方法，包括已有特征的筛选和3个新的对比度特征的提出；改进了一种基于GA的特征选择方法，克服了已有方法对特征优劣评价不全面的问题；设计了加权二次距离鉴别器，提高了鉴别的性能；研究了基于目标编队知识进行进一步杂波虚警剔除的方法。

This article studies based on the shortest path city public transportation intelligence inquiry system, first aims at the city public transportation line network chart establishment mathematical model; Then research based on above mathematical model database creation method and corresponding algorithm design, with take Dijkstra algorithm as foundation, based on path shortest public transportation line inquiry algorithm, and through simple analog data confirmation algorithm validity; Finally brief introduction according to this thought design realization city public transportation intelligence inquiry system.

研究基于最短道路的城市公交智能查询系统，首先针对城市公交线路网络图建立数学模型；然后研究基于上述数学模型的数据库建立方法和相应的算法设计，和以Dijkstra算法为基础的、基于道路最短的公交线路查询算法，并通过简单模拟数据验证算法的有效性；最后简要介绍按此思想设计实现的城市公交智能查询系统。

Based on the strong relationship about frames near by, the Author brought forward an particle filter algorithm importing weighted sampling about pre-frame in object tracking. The algorithm resolves the trickiness in traditional SIR algorithm which depends on statcmodcl acutely by importing proposal distribution. The algorithm can track object which movement is irregular.

根据相部帧间信息的强关联性，提出一种引入前帧加权采样的粒子滤波目标跟踪算法，解决了传统采样重要性重采样(SIR算法由于引进提议分布而需要严重依赖目标的系统状态模型的问题，可以理想跟踪运动状态不规则的目标。

Based on the propagation algorithm of signal probability,the decomposition algorithm of a multi-input XOR/AND gate,and the multiple segment algorithm of polarity conversion,this paper successfully applies the whole annealing genetic algorithm to find the best polarity of an RM circuit.

徐建 宁波大学电路与系统研究所，宁波 315211针对n变量逻辑函数在不同极性下所对应REED-MULLER 电路功耗和面积不同的特点，对信号几率传递算法、多输入XOR/AND门的低功耗分解算法和多成份极性转换算法进行了深入研究，成功地将整体退火遗传算法(whole annealing genetic algorithm，WAGA)应用于RM电路最佳极性的搜索。

The method solves the limitation of converging to the local infinitesimal point in medical image segmentation,and adopts the initial algorithm to assure the initial searching scope of genetic algorithm which is better accommodable than standard genetic algorithm with fuzzy C-means clustering,speeding up the convergence of genetic algorithm.

该算法除了解决模糊C均值聚类算法在医学图像分割中容易陷入局部最优解的问题，而且采用的初值化算法比标准的遗传模糊C均值聚类算法能确定更合适的遗传算法的初始搜索范围，从而加速了遗传算法的收敛过程。

We gave out a new method of finding community structure on the basic of divisive algorithm and agglomerative algorithm--agglomerative algorithm based on diversity index. We also used the algorithm in classic Zachary network and found the result is in accordance with the real network.

2本文在分裂算法和凝聚算法的基础上也提出了一种新的算法——基于相异性指数的凝聚算法，并将它运用于经典Zachary网络，结果与现实网络完全符合。

This thesis focuses on studying the matrix equa-tion problem systematically, and proposed an abstract algorithm of solving the matrixequation with constraints, and established a strict convergence theory. Using this algo-rithm, we can solve the sets of matrix equation satisfying some constraint conditions,such as symmetric, antisymmetric, centrosymmetric, centroskew symmetric, re?exive,antire?exive, bisymmetric, symmetric and antipersymmetric, symmetric orthogonalsymmetric, symmetric orthogonal antisymmetric, Hermite generalized Hamilton ma-trix;So we can solve the problem with this algorithm, if the set of constrain matrixcan make a subspace in matrix space, and this algorithm also can solve the optimalapproximation and least squares problem. So this abstract algorithm has universal andimportant practical value.

本篇硕士论文系统地研究了此类问题，并找到了求解约束矩阵问题的抽象算法，并建立严格的收敛性理论，利用这一算法可求解约束条件为对称矩阵、反对称矩阵、中心对称矩阵、中心反对称矩阵、自反矩阵、反自反矩阵，对称正交对称矩阵、对称正交反对称矩阵、双中心矩阵、Hermite广义Hamilton矩阵等；可以说只要约束矩阵集合在矩阵空间中构成子空间，都可以考虑用此算法求解，而且这一算法还能把矩阵方程解及其最佳逼近，最小二乘解及其最佳逼近统一处理，因此本文算法有普适性和重要的实用价值。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。