In this paper a new method of modeling forecasting is given for the time series by using the numerical solution of differential equation.
本文利用微分方程的数值解法对时间序列建模预测作了新的尝试。
A method to find real numerical solution of the nonlinear equation by logarithm complex conversion is presented in this paper.
本文提出一种通过对数复变换求非线性方程实数根数值解的方法。
Numerical solution is given to mathematical model of formation temperature field by full implicit finite difference method.
并利用有限差分方法，对温度场数学模型进行数值求解。
After treating the two-dimensional ideal MHD equations with a multistep implicit scheme, we obtained a helmet streamer solution of the solar wind near the sun by use of the numerical method.
在对二维理想磁流体力学方程组采用多步隐格式进行数值处理后，利用长时间渐近方法计算得到了太阳风的盔状流动解。
Numerical test study about the stability and precision of the method is made by discussing the solution of SH wave motion.
对采用该方法求解点源出平面波动问题时的数值稳定性和精度进行了数值试验研究。
The fine scales solution in the variational multiscale finite element method, which can be acquired by analytical or numerical technique, has an important impact on the final numerical solution.
变分多尺度有限元方法中的细尺度解对数值解有着重要的影响，其可通过分析方法或数值方法求得。
Numerical solution can be obtained by discrete method.
用离散的方法可获数值解。
The collocation method is a numerical method which search for the approximate solution of the equation by way of meeting pure interpolation condition.
配置法是以满足纯插值约束条件的方式，寻求算子方程近似解的方法，且具有无需计算数值积分、计算量小、收敛阶高等优点。
This paper mainly describes how to get the numerical solution of the scalar wave equation by finite element method.
本文研究用有限元法求标量波动方程的数值解。
By means of the method of the multiple scales the first approximate solution of the primary resonance of the system is acquired, and numerical calculation is carried out.
应用多尺度法求得了系统主共振情况的一次近似解，并进行了数值计算。
Theoretically the numerical solution of Poisson's equation or Laplace's equation plus Neumann boundary condition calculated by the boundary integration method is not unique.
使用边界积分方法求解已知第二类边界条件的拉普拉斯方程或泊松方程时，理论上解是不唯一的。
In this paper a new method of modeling forecasting is given for the time series by using the numerical solution of differential equation. A practical example is also given.
本文利用微分方程的数值解法对时间序列建模预测作了新的尝试。文中用实例给以说明。
Because the numerical solution is obtained point to point by it, the probabilistic numerial method is not expensive for the problem of concentrative loading.
又因为此种方法，是逐点获得数值解的，因此，用于集中载荷等问题时不显工作量大和浪费。
A mechanical model of bottom hole assembly (BHA) with eccentric bits is established and the solution of this model was given by means of numerical method.
采用静力分析的方法，建立了偏心钻头底部钻具组合的力学模型，并完成了对力学模型的求解。
The potential lift is computed by the numerical method of basic solution distribution.
位流升力的计算，采用基本解的数值计算方法。
A method to improve the computational accuracy for numerical solution by considering the acceleration-discontinued characteristics has been given and discussed in detail.
提出了考虑加速度间断特性来改进数值解精度的方法。并作了详尽的讨论。
The results show that the numerical solution of the dam-break problem can be obtained by hybrid finite analytic method correctly and effectively.
一维理论解和其他格式的二维数值结果符合良好，表明非交错网格下的混合有限分析法能正确有效地求解溃坝问题。
The precise integration method of two end boundary conditions is adopted to realize the high-precision numerical solution of the question by means of computer program with MATLAB.
运用两端边值问题的精细积分法，通过MATLAB语言编制计算程序求解出相应问题的高精度数值解。
A new numerical method for the solution of multi-component chemical equilibrium flows by the elements distributing equations and thermodynamic calculation of chemical equilibrium was introduced.
提出了一种新的方法来计算多组分化学反应流场。它首先引入了元素的分布方程，然后根据化学平衡的热力计算方法求解每一位置的组分及温度。
The numerical solution of the frequency equation by half - separation method, was studied.
给出二分法求解频率方程的流程图，并进行实例计算。
A numerical solution method is suggested for the calculation of the geometry of horizontal fractures induced hydraulically by injecting, at variable rates, in sequence of power-law fracturing fluids.
本文建立了水力压裂过程中变排量注入一种和顺序注入两种幕律液体情况下水平裂缝几何尺寸的数值计算方法。
Described in this paper is the calculation of hydrodynamic coefficients of submarine horizontal stabilizing fin -rudder assembly by a numerical method of finite elementary solution.
本文用有限基本解方法计算潜艇水平稳定翼与舵组合体的流体动力系数。
The numerical solution of the shortest geodesic on open surface is given by spline function method, and computer drawing is discussed.
本文应用样条函数方法给出求解一般开曲面短程线的数值得的方法，进一步对计算机图形绘制进行了探讨。
As the integral equation, the authors use the reproducing kernel method to seek the solution, and seek the numerical solution by the Mathematic software.
对于积分方程应用再生核解法进行求解，并应用数学软件进行数值求解。
According to the finite element analysis of heat conduction with phase-change by using the enthalpy, an effective numerical method to eliminate the solution of iteration is presented.
通过对采用热焓处理相变导热问题的有限元分析，提出了消除迭代求解的一种有效算法。
By using numerical solution method, the optimal cycle performance characteristics of the engine at maximum power output, maximum efficiency and maximum ecological function are analyzed and discussed.
应用数值方法，分析并讨论了热机在最大输出功率、最大效率和最大生态学函数下的优化循环性能特性。
A numerical solution method named section-by-section method was introduced to solve the Poisson equation.
提出了分段计算求解泊松方程的数值计算方法。
The solution obtained by the present method has large convergence range and the computation is simpler and more rapid than other numerical methods.
该方法和其它方法比较，具有收敛范围大，计算简便迅速等特点。
The solution obtained by the present method has large convergence range and the computation is simpler and more rapid than other numerical methods.
该方法和其它方法比较，具有收敛范围大，计算简便迅速等特点。
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