查询词典 gradient method

By doing so, the application of SDTFM is extended to random geometrical plane region. Compared with FEM, the method has such the advantages as using fewer elements, faster convergence and highter accuracy of computation especially in dealing with high gradient stress.

与单纯用有限元法求解相比较，本文方法具有划分单元少、求解速度快、计算精度高等优点，特别在求解高梯度应力时，显示极大的优势。

The proposed DGF MoM method can be used for high field MRI coil design, for example, the rapid evaluation of RF resonator and high per formance gradient system designs.

所提出的DGF/MoM法可用于高场MRI的线圈优化设计，例如射频线圈的快速评价以及高性能的梯度线圈的快速优化设计。

The exact solutions are then obtained for the equations characterizing flows of such fluids under an arbitrary pressure gradient by the method of integral transforms (Fourier Cosine transform and Laplace transform).

运用积分变换方法(Fourier余弦变换和Laplace变换)，求得了在任意压力梯度下流体运动方程的精确解。

Gradient regularization method ; Frechet derivative ; regularization parameters ; parameter identification ; ill posedness ; elliptic operator equation

梯度正则化方法； Frechet导数；正则参数；参数识别；不适定；椭圆算子方程

By using the Copson method, one of these equations is transformed into a Fredholm integral equation of the second kind to obtain the solution. Furthermore, the intensity factors, the total energy release rate and the mechanical strain energy release rate are obtained and compared with the classical results without considering the electric field gradient effects.

采用了Copson方法，将其中一组对偶积分方程转化为第二类Fredholm 积分方程来进行数值求解，得到了裂纹尖端的强度因子、总能量释放率和机械应变能释放率，并与经典理论中的结果进行了比较。

In this paper,we developed a color to gray method based on gradient domain .

本文提出了一种基于梯度域的彩色图像转灰度图像的方法。

Now the gradient projection method has been considered as one of the basic methods for solving nonlinear optimization problems.

现在梯度投影方法已成为求解非线性规划问题的基本方法之一。

The numerical results illustrate that the algorithm in the paper is more effective than gradient projection method.

数值试验的结果表明算法是有效的。

In this paper, a gradient based robust method for estimation of fingerprint orientation fields is proposed.

作为指纹的全局特征，指纹方向场在自动指纹识别系统中发挥了非常重要的作用。

A new method of gravity gradient vector field for quantitative determination of field source is described in this paper.

本文叙述了利用重力梯度矢量场确定场源的一种新方法，采用富里哀级数求和的算法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。