研究混沌离散系统中不稳定周期轨道的镇定问题。
The stabilization problem of unstable periodic orbits embedded in chaotic discrete-time systems is discussed.
利用闭回路对技术估计欲稳定周期轨的近似位置。
The close return pairs technique is utilized to estimate an approximate desired periodic orbit.
通过调节反馈强度可以得到不同的稳定周期轨道。
Different periodic orbits can be obtained by changing feedback intensity.
在运动学的基础上推导了磨纹长度、磨纹数量以及磨削稳定周期公式。
The length of trajectory, the number of grinding marks and the stable grinding period were deduced.
提示出非稳定周期轨道在神经不规则放电节律的动力学之中起着重要作用。
These results suggest that the UPO play an important role in the dynamics of the irregular firing pattern of neuron's discharge.
结论非稳定周期轨道可以刻划hrv的动力学性质，是分析HRV的潜在的方法。
Conclusion UPOs can be used to characterize the dynamics of HRV and is a potential method to analyze HRV.
从得到的1 0例数据中无一例外地检测到了具有高度统计显著性的非稳定周期1轨道。
Unstable period 1 orbits with high statistical significance were identified in all 10 data sets.
讨论了一类具反馈控制的两种群竞争模型，获得了其存在唯一，全局渐近稳定周期解的充分条件。
A two species competitive system with feedback controls is considered. Sufficient conditions are derived that guarantee the persistence of the system.
这种分析的概念的基础是将所观察到的神经元活动抽象成用非稳定周期轨道的分级所描述的动力学图。
The conceptual foundation of this analysis is the abstraction of observed neuronal activities into a dynamical landscape characterized by a hierarchy of "unstable periodic orbits" (UPOs).
结果表明，通过改变系统变量之间的线性变换矩阵，可以实现混沌系统中各种不稳定周期轨道的稳定控制。
The results show that the UPOs embedded in the chaotic system can be stably controlled by changing the linear transformation matrix of system variables.
目的研究立位心脏R- R间期信号的非稳定周期轨道的结构，进一步探讨心率变异（HRV）的动力学特征。
Objective To study structure of the unstable periodic orbits (UPOs) of R-R interval signals of heart during orthostatic standing, and to reveal the dynamic characters of heart rate variability (HRV).
在此基础上，进一步对阵发放电的非稳定周期轨道分级进行了初步研究，检测到了显著的周期2与周期3轨道。
We also detected the orbits with higher periods, and highly significant unstable period 2 and period 3 orbits were identified.
并将该混沌控制方法推广应用到二维光滑混沌映射系统中，成功实现了该混沌系统中的不稳定周期2轨道的镇定。
A two-dimensional smooth mapping system can be controlled from chaos to a stable period-2 orbit by the nonlinear feedback chaos control method.
外激励相位控制采用微小信号控制并使控制信号与系统的不稳定周期轨道达到最佳相位匹配，获得最佳控制效果。
The small control is adopted also in the phase control and the best phase matching between the control signal and the unstable periodic orbit is reached. Then the best effect of control is got.
第一种控制方案是一种微扰控制，并能将BZ-CSTR化学混沌稳定控制到其内嵌的不稳定周期轨道（UPO）上去。
The first control method is a kind of perturbation control and can stabilize the BZ-CSTR chemical chaos to its embedded unstable periodic orbits (UPO).
为刻划心脏节律存在的确定性动力学特征，运用不稳定周期轨道分析方法对健康青年人的RR间期时间序列数据进行分析。
To characterize the deterministic dynamics in heart rhythm, the unstable periodic orbit analysis were the RR interval time series of healthy young men.
这一控制方法的优点是不需要获取时空混沌系统中不稳定周期轨道的任何信息，且控制参数与被控系统的参数和变量的取值无关。
The advantage of this method is that it does not need to know any information about the UPOs embeded in spatiotemporal chaotic system.
的确，生物钟周期的稳定性是它的主要特征之一。
Indeed, stability of the biological clock's period is one of its major features.
如果对它们的数量进行时间记录，就会发现它是很不稳定的——以不规则的周期急剧上升下降。
If their population is tracked through time, it will be seen to be particularly unstable—soaring and plummeting in irregular cycles.
那些稳定的周期总是导致泡沫甚至危机，更加自由的金融市场只会加剧损失。
Periods of stability always lead to excess and eventual crisis, and freer financial markets only lead to greater damage.
英格兰银行行长默文金，将会在保持设定利率权力的同时，为了金融体系的稳定而承担责任，并且控制信贷周期。
Mervyn King, the governor of the Bank of England, will assume responsibility for the stability of the financial system and control of the credit cycle, while retaining power to set interest rates.
与其说银行是稳定的源泉，倒不如说银行强化了经济周期，银行公司在经济繁荣时毫无规矩而在经济萧条时又毫不谦虚。
Rather than being a source of stability, banks intensified the economic cycle, with firms showing little discipline during the boom and no humility afterwards.
他没有说衰退很可能发生，仅仅是道出了事实：美国企业的利润率开始稳定，这是经济周期进入后期状态的标志。
He did not say recession was likely. He merely noted the truth: that corporate America's profit margins "have begun to stabilise", a sign that the economic cycle is entering its later stages.
如果产品不够稳定，发现了很多缺陷，那么你需要增加测试的周期直到达到质量标准。
If the product is unstable, and many defects are being discovered and investigated, you'll need to add test cycles until the quality criteria are met.
在我们这个宇宙里出现了漫长生命周期的恒星，具有稳定轨道的行星，能够实现复杂化学变化的分子，仿佛它的物理法则曾被精确校准过。
In our universe the laws of physics seem precisely calibrated to allow the existence of long-lived stars, planets with stable orbits, and molecules that allow complex chemistry.
不过它的发布周期并不稳定，而且也没有64位的版本。
Its release cycle can be erratic, though, and there is also no 64-bit version of the software.
一旦设计开始稳定，我们就进入到了一个使用JSP和servlet的迭代的编码周期。
We moved to an iterative coding cycle using JSP and servlets once the design started to stabilize.
Debian也有一个相对较慢的发布周期，大约每1到3年会发布一个稳定版。
Debian also has a relatively slow release cycle, with stable ones coming out every one to three years.
我们在稳定状态下每次测试运行约60分钟，自举(ramp up)周期为5分钟。
We ran each test for approximately 60 minutes in a steady state, with a ramp-up period of 5 minutes.
我们在稳定状态下每次测试运行约60分钟，自举(ramp up)周期为5分钟。
We ran each test for approximately 60 minutes in a steady state, with a ramp-up period of 5 minutes.
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