迭代法

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

If the step of the linear system question is not very high, direct solving method is better; if coefficient matrix of the linear system question is not regular and large-sparse matrix , direct solving method does not settle the storage question.

而在求解线性方程组的许多实际问题中，尤其在偏微分方程的差分方法与有限元方法求解问题之中，方程具有重要的特征，一是多为大型稀疏矩阵；二是满足一些条件如对称正定、对角占优等，这使迭代法得到广泛的应用。

Based on the model, retrieves the relative permittivity and relative permeability of the coating- material by iterative inversion of a neural network from the measured antenna temperature.

在此模型的基础上，用神经网络迭代法从测得的天线温度反演了隐身涂层材料的的相对介电常数、相对磁导率。

Bifurcation behaviour of nonlinear systems under the resonance condition isstudied when there are parametric and external excitations at the same time.

本文提出的映射迭代法可以有效地用于强非线性系统的定性分析，且对于弱非线性系统，其一次近似的平均方程与其它方法等价。

Although the present code only adopted the scalar quantity to calculate the apparent reflectance, it has lots of advantages.

描述了一种采用海洋表面反射模型解海洋上空大气辐射传输方程的标量迭代法。

Aimed at the mathematic problem in the model of the pendulum oscillation,the paper introduces the study on the existence of odd-harmonic solutions to second order semi-linear differential equation which describes the model of the pendulum oscillation by using upper and lower solution method monotone iterative technique and the Schauder fixed point theorem respectively.

针对摆型振动模型中的数学问题，分别采用上下解方法、单调迭代法及Schauder不动点定理研究了摆型振动模型的二阶半线性微分方程奇调和解的存在性。

On behalf of the original law Jacobian, Seidel SO...

雅可比、塞德尔和SOR迭代法的原理。

To solve the problem of the slowness of convergence in the learning process of BP network,this paper integrates the idea of Gauss Seidel algorithms into BP algorithms and makes use of the newly corrected weight while correcting next weight.

为了解决BP网络在学习过程中存在收敛慢的缺点，文中将GaussSeidel 迭代法的基本思想与BP算法结合，将每一个最新修正的权值反映到下一个权值的修正中，提出了一种新的BPGS学习算法来加速BP网络的收敛。

In SHET, equations which represent relation of fundamental component and preparatory eliminated harmonic components are a system of nonlinear, transcendental equations that require the interative Newton-Raphson matrix method for its solution, and convergence in solution depends on whether or not starting value given is right.

特定消谐技术中，表征基波及各次谐波幅值与开关角关系的方程组为非线性超越方程组，一般只能采用牛顿迭代法等数值方法求解，而解的收敛性取决于所给初值的正确与否。

So one topic of this thesis is to further study Ishikawa and Mann iterationmethods for solutions to nonlinear equations involving single-valued m ?

长期以来，许多作者用Ishikawa和Mann迭代法去逼近非线性算子方程的解以及非线性算子的不动点。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。