查询词典 Jacobi

We take the nonlinear Klein-Gordonequation in an infinite strap and in a cylinder as examples to illustrate how to deal withnonlinear problems by using Jacobi pseudospectral methods.

Jacobi谱方法和拟谱方法数值分析理论的研究极大地丰富了现有谱方法的理论基础，同时将发展泛函分析、数值逼近论和偏微分方程数值解的相关理论。

We prove under the local error bound condition that the Levenberg-Marquardt method with this parameter converges quadratically to a solution of the system of the equations by the technique of the singular value decomposition of the Jacobi matrix.

利用Jacobi矩阵的奇异值分解技巧，我们证明了此时在局部误差界条件下，Levenberg-Marquardt方法产生的迭代点列局部二阶收敛于方程组的某个解。

These three algorithms can avoid to recompute the nth order head submatrix of the Jacobi matrix. Moreover, the last two algorithms are more stable, their precision can match well with the algorithm of Boley and Golub.

这三种算法都可以避免重构Jacobi矩阵的n阶首主子阵，并且后两种算法更稳定，数值精度可以(来源：A1cBC论c4文网www.abclunwen.com)与Boley和Golub的算法媲美。

The relationships between the eigenvalues of Jacobi iteration matrix and the block AOR iteration matrix make a very important role in our analysis. Then we prove some sufficient conditions for the semiconvergence of the block AOR method.

利用块AOR迭代矩阵和相应的块Jacobi迭代矩阵的特征值之间所存在的关系，我们证明了求解奇异p-循环线性方程组的块AOR迭代法半收敛的一些充分件。

Moreover, the stability and bifurcation of periodic motions are studied by means of computing the eigenvalues of its Jacobi matrix.

数值模拟表明了超谐周期运动的存在性判据的正确性，并通过计算Jacobi矩阵特征值可判断周期运动的稳定性及分岔。

Certainly President Jacobi won't stand for this, but the way the Senate is, it would take days for them to actually decide on any recourse

很显然，Jacobi总统不会为这个出面，但是参议院的方式是，花几天时间考虑去决定他们的办法。？？

In Chapter One we give the background of large unsymmetric matrix eigenproblems and basic numerical algorithms for solving them. We review the state of the art of this subject. Finally, we describe the work of this thesis. In Chapter Two we make two improvements for the Jacobi-Davidson method combining with the refined projection principle.

本文正是在这一思想的引导下，对Jacobi-Davidson类方法进行了研究，全文共分四章：第一章介绍大规模非对称矩阵特征问题的来源、解决这类问题的基本方法以及本学科的发展现状、最后介绍本文所作的工作。

The optimal dynamic unlimited excess of loss reinsurance using the mean-variance premium principle is studied. Following Hipp's theory, a corresponding Hamilton-Jacobi-Bellman equation is obtained to minimize the ruin probability, and existence and optimality of the solution is proved.

考虑具有均值－方差保费原理的超额损失再保险的最优策略问题，沿用Hipp的理论框架，以最小化破产概率为目标，得到一个Hamilton-Jacobi-Bellman方程，并证明了其解的存在性及最优性。

With the increase of vibration frequency, the variation process of Jacobi matrix eigenvalue was calculated. According to the position of eigenvalue crossing the unit circle in the complex plane, the stability of fixed point of the map was discussed and the route from periodic motion to chaos via period-doubling bifurcation was received.

以振动频率为控制参数，计算得到映射Jacobi矩阵特征值的变化曲线，根据其穿越复平面单位圆的位置，分析了映射不动点的稳定性，获得了碰撞运动通过典型的倍周期分岔通向混沌的过程。

This article discusses the linear complexities of generalised Legendre sequences and two classes of generalised Jacobi sequences.

Legendre序列和Jacobi序列的伪随机性良好［1］，文［2］又给出了Legendre序列的线性复杂度和反馈多项式。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。