时滞

In this thesis, a circadian oscillation model is studied from the point of view of theoretical analysis. The circadian oscillation model is analyzed using the theory of delay differential equations.

本文从理论分析的角度出发，运用时滞微分方程的相关理论，对昼夜节律模型做了一定的理论分析。

"Currently one of the most important task should be run in the first three quarters of the situation on the basis of the fourth quarter should be taken to explore what the appropriate policy initiatives, so as to economic growth in 2005 to create a more room,"Ba said," especially considering that China's macro-policy 1 ~ three-quarter time-delay effect, the development trend of the first three quarters, as well as the policy direction of the fourth quarter, were to some extent implicit economic growth in 2005 with a pattern of clues."

"目前的一个最重要的任务应该是运行在前三季度的情况的基础上，第四季度应当采取哪些探索适当的政策举措，使经济增长在2005年创建更室，"巴金说："特别是考虑到中国的宏观政策1 3个季度的时滞效应的发展趋势，前三个季度，以及政策方向的第四季度，都在一定程度上隐式的经济增长在2005年的格局线索。"

It is the system delay time and the system time constant a combination of values.

它是系统时滞时间和系统时间常数的组合值。

Meanwhile, it studies the composition and the calculation method of the time lag of transportation investment.

同时研究了交通运输投资项目投资时滞的组成和计算方法。

The main reason is that supply can adjust to changes in demand only with a time lag.

主要原因在于，在房地产市场中，供给对于需求变化的反应总是存在时滞。

The control of time lag system has important sense in automation domain.

梗概： 时滞系统的控制在自动化领域具有重要意义。

It appears especially essential to research and limit the time lag of control system.

对控制系统时滞进行研究和限制显得尤为必要。

For the second order inclusion, using the transformation of variable, the existence of nonoscillatory solutions can be reduced to the existence of solutions for a first order inclusion.

在引进了微分包含解的振动性和非振动性的定义之后，通过分析解的单调性给出了一类二阶包含解的渐近性和振动性的判别准则；对于一阶微分包含，首先证明了时滞微分方程的振动性定理，在此基础上给出微分包含的结果。

Then discuss whether the trivial solution will bring the Hopf bifurcation problems or not, at last model the equation using Matlab.

最后，本文利用Matlab对这一类时滞微分方程做出了相应的数值模拟，对所求的数据准确性进行了验证。

In this thesis,we first consider the stability of the trivial solution to a three-unit ring network with multiple delays and without self-feedback.Most impor-tantly,we know how the number of the eigenvalues with positive real parts changes,which is fundamental for the discussion of bifurcation.

本文首先讨论了具多个时滞的不带自反馈的3元环状神经网络系统平凡解的稳定性，并得到了平凡解对应特征方程正实部根个数的变化规律。

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