时滞

In the last part we investigate the existence of global attractors for the timediscretization model from a class of reaction-diffudion equations with delay, andthe upper semicontinuity of the global attractors is obtained under some sufficientconditions.

第三部分研究了一类时滞反应扩散方程的时间离散化模型，证明了连续模型离散后整体吸引子的存在性，并在一定条件下证明了离散整体吸引子的上半连续性。

Chapter 1 deals with the global existence of solutions for abstract semilinear RFDEs withinfinite delay.

第一章讨论抽象半线性无穷时滞RFDEs解的全局存在性。

The dynamics of coupled system of semilinear parabolic equations with time delays is investigated using upper and lower solutions and its associated monotone iterations. The asymptotic behavior of solutions is given.

利用上、下解方法及相应的单调迭代序列研究具有时滞的耦合半线性抛物方程组的动力学行为，给出了解的渐近性质。

Neutral equation; stochastic functional differential equation; stochastic differential equation with delay; infinite delay; asymptotic propertie; semimartingale convergence theorem; Markovian switching; moment stability; moment boundedness

基础科学，数学，概率论、数理统计中立型方程；随机泛函微分方程；随机延迟微分方程；无限时滞；渐近性质；半鞅收敛定理； Markov调制；矩稳定性；矩有界性

The influence of dynamic characteristics of positioning servo-system to machining precision is studied.

同时，将前馈控制与模型参考时滞控制相结合，对位置控制系统进行了仿真研究，实现了位置伺服系统的零跟随误差控制，为进一步提高位置伺服系统的控制精度和鲁棒性开辟了新途径。

Successfully applying to nonlinear structure analysis and active control with time-delay consideration,the high order single step method shows its good stability,high precision and high speed computation,etc.

高阶单步法已成功地应用于结构非线性分析及考虑时滞的主动控制等，显示了它的稳定、精度高和计算迅速等特点。

Because the successful application to nonlinear analysis of structure vibration and active control takes into account the time-delay,the high order single step method shows good stability, high precision and high computing speed, etc.

由于高阶单步法已成功地应用于结构非线性分析及考虑时滞的主动控制等，显示了它的稳定、精度高和计算迅速等特点。

The solution of singular system is not unique and impulse-free, which is not existing in regular systems. Therefore, the study on robust control for uncertain singular systems with delays is important both in theory and in practice.

因此，奇异系统是比完全状态系统更具有广泛形式的动力学系统，对不确定奇异时滞系统的鲁棒控制研究具有重要的理论意义和实际意义。

This result shows that if all the characteristic roots have negative real parts, under a condition, the solution of singular differential systems with delay is exponentially stable.

由此可以得到一个条件，在该条件下如果所有特征根都具有负实部，则退化时滞微分系统的解是指数稳定的。

Analysis results show travel time distribution is skew and hysteretic, which denies the widely accepted assumption in this field that the travel time distribution is normal distribution.

实证结果表明行程时间分布存在偏峰和时滞现象，否定了当前行程时间可靠度研究普遍认为的行程时间服从正态分布假设。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新