查询词典 perturbation function

Comparisons between the interval analysis method and the probability perturbation finite element method in mathematical proof and numerical examples are performed, which show the advantages of the presented method, including less prior information need on uncertain parameters and higher accuracy.

从数学证明和数值算例两方面，将其与概率摄动有限元法进行了比较，结果显示区间分析方法对不确定参数先验信息具有要求较少、精度较高的优点。关键词动力响应，非线性振动系统，区间分析方法，概率摄动有限元法，不确定参数

That is, a hacker can produce a valid signature for any message without the signer's secret keys. In chapter 4, we research the digital signature schemes based on quadratic residue problem. We first propose a new and efficient bit perturbation.

第三章第二节，首先分析Harn密钥交换协议的安全性，然后根据数学问题y=g〓 mod p设计两种新的密钥交换协，从而避免了Harn密钥交换协议的不安全因素。Z。

Applied perturbation theory of quantum, the electronics transition probability is calculated, but the pressure of the wall of well and conformation work is investigated with the infinite-depth potential well model.

以无限深势阱为模型，应用量子力学微扰理论计算了叶绿素中电子跃迁几率，并且求得电子对阱壁产生的压力以及所做的构像功。

The quintic and derivative nonlinear Schrodinger equations has a extensive applications in various physical areas and can be considered the perturbation of the NLS equation. Further they are the near integrable systems.

具五次和导数项的非线性Schrodinger方程具有广泛的物理应用背景，可视为非线性Schrodinger方程的扰动，进而可作为近可积系统进行较为精细的研究。

Perturbation source forced by convection can produce waves propagating cyclonically, which makes eyewall and spiral rainband enclose eye.

西北侧对流作为扰源，激发波动沿逆时针方向传播，使得眼墙与螺旋雨带逐渐趋于闭合，包围形成较为完整的眼区结构。

In chapter 5, we investigate the iterative methods for solving the linear systems by the homotopy perturbation technique, and the numerical rank of a matrix in the matrix computations are considered, especially the ill-conditioned matrices.

本文第五章中我们首先利用同伦摄动技巧考察了线性方程组的迭代解法。其次，从数值计算的角度考察了矩阵的数值秩问题，尤其是病态矩阵。

Based on the above results, the problems of the electromagnetic interaction between a perfect conducting plate and 1-D/2-D conducting slightly random rough surface and the problems of the electromagnetic interaction between a dielectric spherical particle and dielectric slightly random rough surface are investigated. By using the reciprocity theorem, Small Perturbation Method and Physical Optics approximation, the solution for the composite scattering field from the composite target is derived and evaluated, and the numerical results are discussed and analyzed.

在此基础上，用互易性原理分别研究了一维、二维导体微粗糙面与其上方金属导体平板目标的复合电磁散射及介质粗糙面与其上方球形粒子的复合电磁散射，结合互易性原理和粗糙面散射微扰法及物理光学近似导出了复合散射场的计算公式并进行了数值计算，对计算结果进行了讨论和分析。

By comparing the theoretical and measured results, we find that the rectangular cavity perturbation method has relative high precision in complex permittivity.

详细介绍了矩形谐振腔微扰法的基本原理；通过对比标准物质的测量结果发现，矩形谐振腔微扰法测量复介电常数具有比较高的测量精度，且使用样品少。

This paper firstly discusses the constellation rotation error of autonomous orbit determination of navigation satellites which only make use of crosslink ranging observation, then analyzes in depth the influence of tide perturbation on right ascension of the ascending node and autonomous orbit determination.

讨论了仅利用星间测距观测值进行导航卫星自主定轨时所遇到的星座整体旋转问题，分析了潮汐摄动对升交点赤经以及导航卫星自主定轨的影响。

By the intake form of the equations of motion of celestial bodies complex, there is no rigorous analytical solution, common analytical methods and numerical methods seek an approximate solution, the former is called the general perturbation, the latter as a special perturbations.

受摄天体的运动方程形式复杂，没有严格的分析解，常用分析方法和数值方法求近似解，前者称为普遍摄动，后者称为特殊摄动。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！