迭代计算

In each iterative design, a high efficiency reanalysis method was used to reduce computational effort.

在迭代设计过程中，应用一种高效的重分析方法提高了计算速度。

The former can be computed by the iterative physical optical method directly and the later by the boundary element method, the generalized network principle and the reciprocity theorem are then employed to deal with the coupling across the aperture opening.

首先根据等效原理将目标散射场进行分解，分别采用迭代物理光学法和边界元法计算槽缝填充的电大目标和槽缝散射，并应用广义网络原理和互易定理处理口径耦合问题。

Iteration method ; multi curve regression ; water diversion ; computer management system

迭代法；多曲线拟合；水量计算；计算机管理系统

In this paper, we have deduced an iterative algorithm with relaxation parameter from the successive over relaxation method, which not only deduce the necessary of computation time and memory space but also is propitious to overcome the sensitivity of reconstructed images to incomplete noisy data.

从解大型线性方程组出发，由逐次超松弛法(Successive Over Relaxation， SOR)推导出一种带有松弛因子的迭代法。与 SOR 法相比，该算法不仅大大降低了对计算时间和内存空间的需要，而且有利于克服重建图像对不完全噪声数据的敏感性。

The calculation is completed by repetitional iteration.

计算需要通过循环迭代来完成。

In every-time iteration, we firstly estimate the signal amplitude and variance of residual interference plus noise with the output of channel decoding, then calculate the extrinsic information of multiuser detection, and finally conduct channel decoding.

在每一次迭代，首先根据信道译码器的输出估计信号幅度和冗余干扰及噪声方差，然后计算多用户检测的外信息输出，最后是信道译码。

Press and ramp rolling problems are simulated by programming written. Meanwhile the influence of the number of scattered nodes and iterative steps to the results\\\\\\\ accuracy is discussed.

编程对压印和斜扎两个塑性成形过程进行了模拟研究，讨论了离散节点数目和迭代步数对计算精度的影响。

The calculation of the rotordynamic coefficients of a multistepped annular seal in hydraulic turbines is discussed in this paper. Based on the Hirs' turbulence lubrication theory and the bulk flow model, the governing equations for the flow in the seal are developed by using the Moody's friction equations. The governing equations are perturbed when the rotor and the stator are coaxial. The Runge Kutta integration method and the Newton Raphson iteration method are used to solve the perturbation equations....

本文首先在Hirs紊流润滑理论的基础上，采用体积流动模型及Moody摩擦方程建立起阶梯口环水封中流体流动的控制方程，将各个方程在转子与定子同心处进行摄动，采用Runge－Kuta积分法及迭代过程求解摄动方程，建立起水轮机阶梯式口环水封的转子动力特性系数的计算方法，为水轮发电机组轴系的动力学分析提供了必要的理论基础。

This paper focuses on four important aspects as follows. The first one is the establishment of variational quations which provides the mathematics theories for the finite element method of HMT; the second one is for the study of scalar/node and vector/edge finite element method; the third one is about how to solve faster for the large-sacled matrix system of scalar/node and vector/edge finite element; and the last one is achieving the forward modeling with high precision of HMT method.

主要包括四部分：建立与高频大地电磁法边值问题相等价的变分问题，为有限元数值计算奠定数理基础；标量/矢量有限元方法的研究；加速标量/矢量有限元矩阵系统方程迭代求解技术的研究；实现高频大地电磁参数精确快速正演模拟的研究。

To simplify and reduce the effort required for solving control equations, separation of time-space variables is invoked.

在此基础上，在整个时间空间上构造了迭代求解方法，将问题化为局部状态变量修正和全局控制变量求解问题；从而形成了有限变形问题过程最优控制计算方法的理论基础。

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。