查询词典 iteration

On the convergence of Newton's method in Banach space〓 Let F be an operator mapping from a real or complex Banach space X to another one Y, the Newton iteration 〓(2) is used to find the approximative solution of the equation (1), where the derivative is meant in the Frechet sense.

一、Banach空间中Newton法的收敛性〓设F是由实的或复的Banach空间X到同型空间Y的算子，求解方程(1)的Newton迭代为〓，0，1…，(2)其中的导数指的是在Frechet意义下的。

By using the iteration method,M-matris theory and monotonous theory,the sufficient conditions are obtained for global attractivity and boundedness and persistence of positive solutions of this difference system.

利用迭代理论、M—矩阵理论、单调理论，分析该系统的持久存在性和吸引性，得到了该差分系统一致持久存在和其正解全局吸引的充分条件。

For any initial generalized bisymmetric matrix $X_1$, when $AXB=C$ is consistent, we can obtain the generalized bisymmetric solution of the matrix equation AXB=C within finite iterative steps by the iteration method in the absence of roundoff errors; Moreover, the least-norm solution $X^*$ can be obtained by choosing a special kind of initial generalized bisymmetric matrix.

在不考虑机器误差的情况下，当矩阵方程AXB=C相容时，对任意广义双对称X_1，矩阵方程AXB=C的解可以经过有限步迭代得到；特别地，通过选择特殊地初始广义双对称矩阵极小范数解X^*。

By this iterative method ,the solvability of the matrix equation can be judged automatically.When the matrix equation is consistent ,then,for any initial centrosymmetric matrix pair ,a centrosymmetric solution pair can be obtained within finite iteration steps in the absence of roundoff errors, and the least norm centrosymmetric solution pair can be obtained by choosing a special kind of initial centrosymmetric matrix pair.

当矩阵方程相容时，对任意初始的中心对称矩阵对在没有舍入误差的情况下，经过有限步迭代，得到它的一个中心对称解，并且，通过选择一种特殊的中心对称矩阵对，得到它的最小范数中心对称解。

The coaction of grouting and drainage curtains will lead to biggish gradient variation of seepage flow nearby, and slow down the convergence rate of unconfined seepage flow iteration, or even cause it divergent.

防渗帷幕和排水孔幕的共同作用可能会引起附近渗流场较大的梯度变化，并导致无压渗流迭代计算过程收敛速度慢甚至不收敛。

The optimization method is an effective tool in back-analysis of displacements of roadway, choosing the bad iteration method will lead to many problems, such as slow constringent speed, bad stability of solutions, local minimization.

最优化方法是进行巷道位移反分析的有力工具，如果优化迭代方法选择不当，将导致迭代过程收敛缓慢、解的稳定性差、陷入局部极小值等问题，不能保证搜索到全局最优解。

The optimization method is an effective tool in back-analysis of displacements of roadway, choosing the bad iteration method will lead to many problems, such as slow constringent speed, bad stability of solutions, local minimization. The globally optimal solution cant be found out.

最优化方法是进行巷道位移反分析的有力工具，如果优化迭代方法选择不当，将导致迭代过程收敛缓慢、解的稳定性差、陷入局部极小值等问题，不能保证搜索到全局最优解。

The next iteration was this thing that would do cryptographically secure IOU notes.

接下来的这次尝试是我们使用密码安全加密 IOU3。

Iteration is needed in complex misaligned system.The range for tilt misalignment that can be figured out is 0～10~4 urad and the decentration range is from 0 to 1mm.

这种辅助装调方法能够有效的指导谐振腔的精装调过程，为今后实际的激光器谐振腔系统的自动精密调节提供了一种方法。

This rapid continuous inversion method utilize well logging curves to delaminate formation,and integrate auto-delaminate and human-computer interaction delamination to provide reliable initial model for iteration inversion calculation,and in the same time apply resistivity comparison and gamma as the constraint condition to reprocess the data from the inversion, all these improve the precision of this inversion and get the logical resistivity curves of both filter layer and impervious bed.

快速连续反演方法利用测井曲线划分地层，进行自动分层与人机交互分层相结合的方法，为迭代反演计算提供出可靠的初始模型，同时应用电阻率比值、自然伽玛作为约束条件对反演得到的数据进行约束后处理，提高反演的精度，得到合理的渗透层和非渗透层的电阻率曲线，并在理论地层模型和实际测井模型中均进行了测试。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。