查询词典 periodic

The partial periodic correlation functions are summarized, and the notion partial aperiodic correlation function is brought forward correspondingly.

这两个概念在研究序列的随机性时常被忽略且很模糊，但它们却对序列的局部随机性有很重要的影响。

This technique is an improved and generalized version of the finite array Green's function method[1], and fit for analyzing all kinds of arrays including finite periodic and aperiodic arrays.

该法不受阵列单元排布形式、单元电流分布情况和单元数量的限制，对有限周期和非周期阵列的分析都有着较高的计算效率和稳定的收敛性。

The result of simulation and experiment showed that in follows:Stochastic resonance in the neuron models was not only for periodic signal but alsofor aperiodic signal.

实验结果表明：神经元模型中的随机共振不仅仅局限于周期信号，对于非周期信号也广泛存在。

According to the change of the enemy\'s quantity and the qualitative theory of the differential equation, we research the spruce aphides and its predator system. At the same time, we discussion the spruce aphid multiplication model when the natural enemy quantity is a certain value and the periodic oscillating model whose the quantity of the natural enemy changes along with the time. Obtains the stability condition of the balance point and the limit-cycle existing condition, the system presents the dissipative structure\'s character. Finally it explains that this theoretical analysis has certain practical significance regarding the preventing and controlling harmful insect.

第五章，松毛虫与其天敌的关系是食饵和捕食者的关系，根据天敌数量的变化，利用微分方程定性理论，研究松毛虫与天敌系统，讨论天敌数量为一定时的松毛虫增殖模型和天敌数量随时间变化的周期振荡模型，得到正平衡点全局稳定性和极限环的存在条件，通过计算机模拟，说明周期振荡的捕食模型能够呈现典型的时间耗散结构特征，对于防治害虫有一定的实际意义。

That it is subject to periodic review of its relevance and appropriateness.

定期对其是否对方针的相关性和适宜性进行了定期评审。

Without presuming the activation functions to be continuous, bounded and monotone nondecreasing, by utilizing linear matrix inequality and Cellina approximate selection theory in differential inclusion, a sufficient condition is provided to ensure existence of periodic solutions for that recurrent neural networks.

在并不要求激励函数连续、有界及单调非减的情况下，通过利用线性矩阵不等式和微分包含中的Cellina近似选择定理，得到了该神经网络模型存在周期解的充分条件。

Stability and the approximate bifurcation periodic solution of a class of general Logistic model with time delay are discussed.

讨论了具有时滞的广义Logistic模型分支周期解的存在性、稳定性及近似分支周期解。

Planar Archimedes spiral antenna,conical spiral antenna and the printed log periodic dipole antenna,were researched in frequency domain on the demand of jammer and seeker.

根据干扰机和导引头应用需要，从频域来研究平面阿基米德螺旋天线、锥台螺旋天线和印刷对数周期天线。

The article predictes in farmer s increasing income fluctuation by the wavelet transform in 1976-2006.The Result shows that:Chinese armer income fluctutions appears the characteristic time scale 7 and 40 years keeping consistent with the periodic oscillation.

文章运用小波变换对1976—2006年间农民收入的波动关系进行预测分析，实证检验结果显示：全国农民人均纯收入增长具有7年和40年左右的特征时间尺度，与农民人均纯收入变化存在着7年和40年两个主要周期振荡保持一致。

But, most of the traditional mushroom structures are restricted to only single EBG frequency design. In this thesis, we propose a novel concept about the interlaced periodic arrayal of the mushroom structure with the suspending microstrip line. By the simulation and measurement result, it is verified that the mushroom structure with the suspending microstrip line can reveal multi-band EBG characteristic.

而传统的蕈状结构的应用，多半只有操作在单一频率的电磁带隙特性，而本论文就针对了蕈状结构结合悬置微带线架构的电磁带隙特性研究，并提出了一种新的穿插周期排列的概念，透过电路模拟与实作量测的验证，我们成功的让蕈状结构结合悬置微带线的架构展现出多频电磁带隙的特性，并且，我们利用了这一个新概念设计了一种新型的微波电路。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。