查询词典 initial condition

For the computational stability of linear evolution equation, the condition of CLF for judging the computational stability of initial value problem is introduced.

针对线性发展方程的计算稳定性问题，介绍了判定线性发展方程初值问题的稳定性判别条件：CLF条件。

Under the assumptionthat the covariant derivative of the sections satisfies the Lipschitz condition with L-averagealong the piecewise geodesic, a unified convergence criterion for Newton\'s method and theradii of the uniqueness balls of singular points around the initial points of sections are es-tablished.

本章的主要内容包括以下两个方面：当截面的协变导数满足沿着分段测地线的关于取正值非减可积函数L-平均的Lipschitz条件条件时，本文给出了关于截面的Newton法收敛的统一判据，同时给出了在初始点附近的关于截面的奇异点的唯一性球的半径的估计。

It is proved by experiments that the expansion energy of initial releasing gas and the thickness of soft coal seam can be used to forecast outburst accurately under the condition of "uncovering ideal crosscut".

实验证明，采用初始释放瓦斯膨胀能和软煤厚度可以准确地预测理想石门揭煤条件下的突出危险性。

Chaotic system has a determinate description equation, a tiny change on its initial condition would cause unpredictable changes of system trajectories.

20世纪60年代人们发现了一种称之为"混沌"的非线性系统，描述系统的方程是确定的，但系统初值有极微小地变化，将引起系统轨迹在未来不可预测的改变。

Firstly, based on the wave equation, determining reasonably its initial boundary condition, the paper establishes a computer diagnostic model of oil pumping mechanical well, the damping factor in the model has been reasonably determined, the implicit difference solutionis conducted to the model by changing of step width expression difference solves, and the half analytical solution is explored to the model - fine integral method; and realizes the transformation from dot indicator diagram to indicator diagram of any section.

首先从抽油机井计算机诊断技术的理论基础入手，考虑多级抽油杆连续性，建立了粘滞阻尼波动方程，合理确定模型中的阻尼系数，采用无条件稳定的隐式差分法及半解析方法求解方程，获得抽油杆柱任意断面和抽油泵处的示功图。

Some conclusions can be obtained from the analysis of test results:(1) Under long-term cycle loading, the strain rate of soft clay decreases with time. The logarithmic relationship between strain rate and time is linear.(2) The effect of initial static deviator stress and cyclic shear stress coupling and the drained condition have much influence on stain rate of residual strain.

通过试验结果分析可得：（1）在长期循环荷载作用下，黏土的应变速率随时间的增大而减小，应变速率对数与时间对数间的关系可用直线描述；（2）初始静偏应力与动偏应力的耦合作用以及不同的排水条件对黏土残余应变速率有较大程度的影响。

The results show that, consolidated deviator stress ratio has the most significant effect on normalized pore water pressure developed with number of cycles. And the normalized pore water pressure developed with generalized shear strain is independent of various initial stress condition.

研究表明：非均等固结条件下，固结偏应力比对归一化后的孔隙水压力随振次增长模式影响最为显著；不同固结条件下的归一化孔隙水压力随应变增长模式却基本相同。

Based on initial condition, during certain time span, numerical analysis method of differential equation, algebra iteration and optimization method are used to solve response of generalized system and to analyze stability of generalized system.

从初始条件出发，在一定时间长度上，采用微分方程数值积分法、代数迭代和优化方法来求解系统响应，获得非线性广义系统稳定性的数值分析方法。

This paper devoted to the initial boundary problem of a degenerate reaction system with the null Dirichlet boundary condition.

研究一类具有Dirichlet边界条件的非局部退化反应扩散系统的初边值问题。

A scalable parallel algorithm of block tridiagonal systems for solving the initial boundary value problem of 3D-parabolic equation with the Dirichlet boundary condition is discussed.

对三维抛物型方程带Dirichlet边界条件初边值问题的离散系统使用块三对角可扩展并行算法求解。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。