使针对

As the inversion and compression attack includes the question relating to solving thepreimage from image of function, a subdivision algorithm for solving preimage of function withbounded derivative based on Lagrange mean value theorem is proposed firstly.

由于逆推压缩攻击方法涉及混沌映射的求逆，针对复杂混沌映射求逆困难的问题，运用拉格朗日中值定理，我们提出了求解导函数有界的函数原象的分割算法，给出了使分割算法计算复杂性上界达到最小的充分条件。

Based on research of lube leakage of the vertical turbine principal axis,the leakage reason is analyzed.

针对立式水轮发电机轴承的漏油问题，分析了产生漏油的原因；结合理论计算，在挡油筒体上加环形板，使之与轴领内壁形成圆盘摩擦泵。

The intension of reduce rank is that the time constant of current-ring is regulated to the best of minimum, and low frequency signal is equated to common proportional component.

磁悬浮系统降阶参数自校正控制，针对直接状态反馈法不足，使闭环系统的动态性满足调节时间和超调量等要求。

On the basis of the research of Growth-type Enterprise and management theory, in the light of its present conditions, this dissertation concluded Growth-type Enterprise problems, analyzed the forming reasons to find the effective management ways, which could promote Growth-type enterprise pullulate steadily and fast, so as to make Growth-type Enterprise promote the national economy.

本文在研究成长型企业的基本理论和管理理论的基础上，针对我国成长型企业的现状，提出其存在的问题，分析问题形成的原因，找到可以促进成长型企业快速、稳步成长的有效管理措施，使成长型企业带动我国经济的高速发展。

This thesis introduces the basic principle of the least square data fitting.. According to the least square data fitting ,the paper studies and analyzes the linear least square fitting ,the quantic least square fitting and nonlinear least square fitting respectively . By using the mathimatic instrument Matlab , this paper shows a lot of examples of interrelated questions. Using Matlab makes the theory of data fitting easier to be understood.

本文介绍了最小二乘数据拟合法的基本原理，并根据最小二乘数据拟合方法，分别针对线性最小二乘拟合、多项式最小二乘拟合，非线性最小二乘拟合（lsqcurvefit、nlinfit、lsqnonlin、以及非线性的线性化）、多元最小二乘拟合进行了分析和研究，并通过数学工具Matlab实现了对相关问题的举例应用，使相关数据拟合理论更加生动易懂。

Simulation results with different sources and channel properties show that the robustness of vector quantizer designed with the method described in this paper has been improved.

我们针对BSC信道对所提方案进行了分析和模拟，结果表明，在量化网络设计中，考虑噪声信道影响的因素，可使训练得到的量化网络的量化特性对噪声信道的影响表现出明显的韧性。

According to the feature that deformation resulted from water absorption and mildew appear mainly on the rabbet surface of ccf , this paper adopts rsst to spray a special waterproof sealant on rabbet surface of ccf , so that the sealant can get into fiberboard to certain extent by means of capillarity and penetration , blockage the holes between fibers and capillary , cut up passage of water and change the properties of soakage and sorption to water in capillarity and fiber . at the same time , solidified sealant can form a compact waterproof pellicle on rabbet surface so as to prevent water and humidity from fiber ' s expansion and mildewing

针对吸水变形、霉变主要发生在地板企口表面的特征，采用企口表面全封闭法，在复合强化地板企口表面喷涂特殊的防水封闭剂，使其依靠毛细管作用及渗透作用进入板内一定深度，堵塞木纤维之间的空隙及毛细孔通道，截断水分传递的渠道，并改变毛细孔壁及纤维的表面性质以不利于水的浸润与吸附，同时其固化后能在企口表面形成一层致密的憎水薄膜，防止水分、湿气从企口侵入板内引起木纤维膨胀变形、发霉等现象。

Because source data is unsteadiness, the changes of data must be spread to materialized view and make it be consistency the changes of materialized view and source data. Otherwise the freshness of data in materialized view will be fall down and the authenticity and consistency of OLAP will be affected. For the maintenance problem of materialized view, an algorithm is presented and it can make the cost of materialized view recomputation be minimized.

由于源数据的不稳定性，其数据的变化必须及时传播到实体化视图中，以保持实体化视图与源数据的变化一致性，否则会降低实体化视图中数据的新鲜度，并影响联机分析处理查询结果的真实性和有效性，针对视图的维护问题，提出了实体化视图的一种维护算法，它将使视图重计算代价最小化。

To satisfy the need of internship of the college students from Hong Kong, Macao and Taiwan and to help them get acquainted with the mainland, since 2002 CAST has organized internship activities for these students from Hong Kong, Macao and Taiwan in their summer vacations. The internship activities are named "Redbud Program""Green Lotus Program" and "Yushan Program" respectively to refer to receiving the students from Hong Kong, Macao and Taiwan.

为了能使港澳台地区在校的大学生深入了解内地的经济和社会发展，促进两岸四地青年的互相了解，获取实际工作经验的机会，中国科协自2002年始，开展了港澳台大学生暑期实习活动，针对香港、澳门、台湾大学生，分别命名为《紫荆计划》、《绿荷计划》、《玉山计划》。

According to disadvantage of AS that the speed low of convergentiss and easily entering the stagnation,improving the AS in some aspect by the way that importing pheromone windows that the value of pheromone cannot exceed the window,only deposit the pheromone on the edge that belongs to the iteration shortest solution path,releasing additional pheromone to the edge belongs to the so-far shortest solution path,judging the situation of convergent and to reinitialize pheromone,optimizing the solutions by local search procedure at the end of every iteration,modifying the transition probability by add some problem specific parameters and so on.

本文主要运用蚁群优化算法(Ant Colony Optimization，ACO)来求解VRP。针对蚁群算法收敛性比较差，易于停滞的缺陷，通过使用信息素窗口限制、信息素的最大最小值，只更新信息素迭代中最好解，增加了精英的蚂蚁，信息素重新初始化之前先判断出汇聚情况，在每次迭代过程中加入局部的搜索进行优化，在对蚁群算法进行了优化时考虑选择概率当中加入与问题的相关参数等措施，从而使蚁群算法的收敛性得到大大提高，避免了算法的停滞现象。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐