In order to solve the two differential-difference equations, a systematic algebraic algorithm is given.
为了求解这两个微分差分方程，给出一个系统的代数算法。
The main contents of first chapter are several difference schemes of first-order and second-order differential equations.
第一章有限差分方法主要内容是一阶和二阶的两点式、三点式和五点式差分方案。
In this paper, by estimates of spectral of an integral operator, the authors give a theorem on the existence of solutions for first order differential difference equations with boundary condition.
摘要通过对积分算子谱的估计，作者给出了一阶线性微分差分方程在边值条件下解的存在唯一性定理。
On this heat transfer model the differential equations were based, and the finite difference complete concealed grids were used in the numerical analysis computation.
根据喉部沉积的传热模型建立了偏微分方程组，采用有限差分完全隐式格式进行数值分析计算。
The continuous dynamics is governed by differential or difference equations, whereas the discrete dynamics is governed by finite automata that are driven asynchronously by external discrete events.
其中连续动力学由微分或者差分方程描述，离散动力学由有限的自动开关描述，并由异步的离散事件驱动。
Results are useful for differential difference equations and differential integral equations with continuous distributed retards.
所得的结果适用于微分差分方程和具连续分布滞量的积分微分方程。
First, the partial differential equations are transformed into discrete space, discrete time nonlinear difference equations through characteristic method and finite difference approach.
首先，通过特征线法和有限差分法得到了时间离散和空间离散的非线性状态方程。
Difference equations are derived by differential equations.
微分方程经过差分化后引出差分方程。
The existence of periodic solutions for a class of impulsive differential equations with piecewise constant argument is studied by constructing periodic sequence solutions of difference equation.
通过构造差分方程的周期数列解，研究了一类具有分段常数变元的脉冲微分方程周期解的存在性。
In this paper, by estimates of spectral of an integral operator, the authors give a theorem on the existence of solutions for first order differential difference equations with boundary condition.
通过对积分算子谱的估计，作者给出了一阶线性微分差分方程在边值条件下解的存在唯一性定理。
In this paper, we derived the conservation laws of 1 + 1, 2 + 1 dimensional differential-difference equations on the base of discrete spectral problems through a direct method.
本文基于谱问题的特点利用直接方法导出了1 + 1、2 + 1维微分—差分方程的无穷多守恒律。
The nonlinear differential equations are solved using finite difference method.
用有限差分法求解非线性微分方程组。
Some sufficient conditions are obtained for the oscillation of first order neutral differential-difference equations with positive and negative periodic coefficients.
本文获得了一阶正负周期系数的中立型微分差分方程振动的充分条件。
Then with a substitutes' dispersion of difference scheme the partial differential equations of the above model were programed on a computer.
建立起数学模型并离散化，然后用微机编程求解微分方程组。
In this paper, a harmonized multi time difference scheme is established, which can be easily constructed on any numerical difference scheme of ordinary differential equations.
提出对求解常微分方程的各种数值算法，可以建立与之相协调的多时次差分格式。
This method can also be used in other nonlinear differential-difference equations.
这种方法也可用于求解其他的差分方程。
In this paper the geometric properties of the difference periodic solutions of ordinary differential equations are discussed.
本文讨论常微分方程差分周期解的几何性质。
A finite difference method based on differential-integral equation is presented for the solution of Navier-Stokes equations for incompressible viscous flow.
本文提出了基于微分-积分方程组求解n - S方程的有限差分法求解不可压缩实际粘性流体绕孤立翼型流动。
The groundwater flow is simulated with the seepage model of heterogeneity isotrope, and the partial differential equations are solved with finite difference scheme of irregular triangle net.
以非均质各向同性渗流模型仿真地下水流，用不规则三角网格有限差分法求解三维数值仿真模型。
The completely conservative difference scheme for hyperbolic differential equations in three dimensions is studied.
研究三维双曲型方程组的完全守恒差分格式。
The groundwater flow is emulated with the seepage model of heterogeneity anti-isotope, and the partial differential equations are solved with finite difference scheme of irregular triangle net.
本文基于研究区地下水系统概念模型，以非均质各向异性渗流模型仿真裂隙-岩溶水流，用有限元法求数值解。
We made the following research in image denoising based on PDEs. On the solution of nonlinear partial differential equations, the check-board finite difference scheme is introduced.
本文在基于偏微分方程的图像去噪方面进行了以下的研究：就非线性扩散偏微分方程的解法，引入了跳点有限差分格式。
The paper discusses the difference method of solving the 4th ordered elliptic partial differential equations and its application to the design of blending and free form surfaces.
本文讨论四阶椭园方程一类周期问题的差分方法及在过渡面、自由曲面设计中的应用。
The partial differential equations are discretized by finite difference method and the transient values of towed body depth and cable tension are computed by Newton Iteration when the heave …
数值计算结果表明采用收放拖缆的升沉补偿方法能够有效削弱母船升沉运动对拖体深度和拖缆张力的影响。
The partial differential equations are discretized by finite difference method and the transient values of towed body depth and cable tension are computed by Newton Iteration when the heave …
数值计算结果表明采用收放拖缆的升沉补偿方法能够有效削弱母船升沉运动对拖体深度和拖缆张力的影响。
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