数值计算

Finally, a Lorenz system is employed to verify the effectiveness of the proposed method, and the simulation results are shown in the end of this paper.

在本文最后，针对Lorenz系统进行了数值计算，数值计算结果表明了所给方法的有效性。

The error between numerical calculation results and theoretical calculation ones is no more than 5%. So, the basic fracturing characteristics and scope of an ice medium below -15℃ may be determined.

数值计算值与理论计算值误差不超过5%，数值模拟结果与实验结果吻合，从而确定了无限区域冰体在-15℃时的基本破坏特征及范围。

It has characters of succinct working environment, good numerical stability and abundant function resources.

MATLAB是一种高性能的数值计算的科学计算语言，具有程序开发环境简洁直观、数值稳定性好、函数资源丰富的特点。

Numerical Calculation of Applied Mathematics important branch of linear equations numerical calculation is an important part.

数值计算是应用数学的重要分支，线性方程组求解是数值计算中的一个重要部分。

The numerical techniques developed here, including the high accuracy method of using expansions in orthogonal functions in normal direction and the effective algebraic mapping to deal with the problem of infinite region, can raise the calculation precision and the convergence velocity greatly.

文中所发展的方法，如，在法向上采用高精度的高阶谱方法和对无限区域数值问题的更为有效的代数变换处理等，提高了计算精度和收敛速度；同时，通过预估校正迭代法，使抛物化稳定性方程中重要的正规化条件得到满足，保证了数值计算的稳定。

The existence of optimal diffractionefficiency is also found and ascertained.(4).Based on the wavefront aberration theory, we analyze the influence brought outby wavefront aberration.

基于MATLAB数值计算得出液晶指向矢在不同电压下的分布参数和液晶Jones矩阵理论，分析了TN-LCSLM的复振幅透过率，利用指向矢分布参数对显示一维矩形光栅时系统的一级衍射效率进行了数值计算和分析。

Afterwards, the solving problem of Parabolic Type is transformed into a initial value problem of ordinary differential equation with respect to through Fourier transform again.

在数值实验中，对六个美式看跌期权价格进行了计算，通过分析比较，结果表明：快速傅里叶变换法加欧拉法是一种快速的高精度的数值计算方法。

This paper uses unsaturated soil Alonso elasto-plastic model to analyze the influence of model parameter value on numerical calculation. And the result shows that Finite Element numerical calculation which adopts the specimen integral deformation model parameter will generate errors, and overestimates unsaturated soil strength.

应用非饱和土Alonso弹塑性模型研究探讨了模型参数取值对非饱和土数值计算结果的影响，使用包含端部约束影响的试样整体变形确定的模型参数进行有限元数值计算将产生误差，同时也高估了非饱和土体的强度。

In the numerical computation, a two-dimensional numerical method integrating finite element method and difference method was employed, where the finite element method is used to calculate the magnetic field of the permanent magnetic guideway and the difference method is used to calculate the induced current in the superconductor, then the levitation force and the lateral force were calculated by Lorentz formula.

在数值计算部分，实现了一种集有限元法与差分法为一体的数值计算方法。

The calculating results which predict that the tip undercooling decreases continuously with an increase of the primary spacing and no minimum undercooling exists have lent an obvious evidence to the above theoretical analyses. The tip undercooling changes sharply for the low primary spacings but slowly for the large spacings.

本文提出的数值模型表明，Peclet数较小时，可以将强制性枝晶生长处理成自适应边界条件进行数值计算；计算结果充分证实了上述的理论分析，并指出顶部过冷随一次间距的增大而连续减小，不存在最小过冷值；一次间距较小时顶部过冷变化显著，较大时变化缓慢。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。