迭代法

By perceiving the facts that average damages do not change the loading paths of a structure and that local damages will not increase component stiffness, the author presents the damage identification algorithms termed as Iterative Matrix Optimal updating and Constrained Submatrix Factor Adjustment .

根据一般损伤不引起荷载路径改变、局部损伤不会导致单元刚度增加等损伤问题的特点，提出损伤识别的"矩阵迭代优化修正法"和"带约束的子矩阵系数修正法"；并将子矩阵系数修正法推广为联合运用动力与静力测量值的损伤识别算法。

A kind of finite element analyzing software "ANSYS" is used to calculate the temperature field of cable system; Finally, Subtense truncation approach is used to calculate the ampacity of cable system with equal load.

根据地下直埋电缆的温度场特性，将开域场转化为四个边分别符合第一、二和三类边界条件的四边形有界热场问题，然后利用有限元法计算场域内的温度场分布，最后用迭代的方法确定电力电缆的载流量。

Data of tooth surface before and after wear were both obtained through laser scan system. The images were then reconstructed by SURFACER software.(2) C language program used of improved iterative closest point algorithms was developed to registrate imagines before and after wear. Standard plan was defined to the overlapped imagines after registration, then wear quantity was measured.￤ear was imitated by tooth brush machine which was made by STOMATOLOGY COLLEGE FORTH MILITARY MEDICAL UNIVERSITY.

应用三维激光扫描仪采集牙模型的表面数据，在计算机中用SURFACER逆向工程软件重建牙表面；②运用最近邻点迭代匹配算法加以改进，编制 C语言程序，配准磨耗前后的三维图像，在确定基准平面后，计算磨耗前后的体积变化量；③用口腔医院自制刷牙机进行模拟磨耗，用传统称重法，通过电子天平测试件的重量变化，用失水法计算测试材料的密度，换算成体积。

However, various algorithms of MFD have a common shortcoming, that is, the initial iteration point must be feasible, so an auxiliary procedure must be considered for finding an initial feasible point, i.e., a system of nonlinear inequalities must be solved before using the method of feasible directions, which is not easy to be finished in generally, especially for large scale problems.

然而，各类可行方向算法有一共同的缺点，那就是初始迭代点必须可行，从而需要一个辅助程序来寻找一个初始可行点，即在运用可行方向法之前先要求解一非线性不等式组，而这个问题通常不易解决，特别是对于大规模问题而言。

Levin pine Act TOEPLITZ symmetric matrix solution composed of linear equations, fewer iterations, the computational complexity is at the end of time, and the calculation accuracy is very high, is a very good way!

详细说明：列文松法解对称TOEPLITZ矩阵组成的线性方程组，迭代次数少，计算复杂读很底，且计算精度相当高，是一种非常好的方法！

Up-to-date, four models of the radiative transter processes have been developed: the two-stream Eddington approximation; the Eddington factor iteration; the ray tracing method and the Monte-Carlo method.

目前所见到的四种球对称系统中的尘埃辐射转移方法可被总结为：二流Eddington近似模型方法、Eddington因子迭代模型方法、射线跟踪法和Monte-Carlo模型方法。

In accordance with the given demands of optimum data, precision distribution has been made with the help of optimum distribution theory and given the uniform convergence iteration method of optimum distribution.

最后给出了精度最佳分配的直接分配迭代算法和对偶分配法。

We apply this technique into theimplementation of discrete dipole approximation method, and the method of moment ofvolume integral equation. The FFT technique combined with iterative solvers reported inthe literatures is compared for the ordinary volume integral equation and weakform ones.

我们将它应用到分析介质体散射的离散偶极子近似方法及体积分方程的矩量法中，并且讨论了文献中报道的FFT技术结合迭代解法求解体积分方程几种不同实现方案的优缺点。

The incremental double iteration method is used to analyze the nonlinear aerostatic stability for long span cable-stayed bridges.

综合考虑了静风荷载和结构自身非线性因素的影响，引用大跨度桥梁非线性静风稳定分析理论，采用增量双重迭代搜索法对大跨度斜拉桥进行了非线性静风稳定分析。

The obtained results a re compared with analytic solution and those from integral equation and other me ans. It is shown that the staggered grid finite difference method combined with the Biconjugate gradient iterative solver processed with divergence correction and incomplete Cholesky decomposition procedures can efficiently improve the three dimensional electromagnetic calculation with high accuracy and stability.

经与解析方法、积分方程等其他方法的计算结果对比表明，交错网格有限差分法结合散度校正和不完全乔累斯基分解预处理的双共轭梯度迭代方法进行正演计算，速度快、精度高、结果稳定，能适应三维复杂介质的数值模拟，为三维电磁反演奠定了基础。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。