查询词典 quasi-periodic

The equivalent relation between quasi-semi-E-convexity of functions and corresponding level sets is proved.

函数的凸性与广义凸性在数学规划以及最优化理论中起着非常重要的作用。

Researches show that chaotic systems have characteristics of ergodic property, non-periodicity and quasi-randomicity, so chaotic systems fit for information encryption.

但是目前研究的多数加密方案都是基于低维混沌系统，存在保密性差、易被网络重构信号等方法破解的危险，并且缺少必要的安全性分析。

Error threshold. The object of natural selection is the quasi-species, and the existence of the error threshold places a limit on the genome length that the organisms carry.

自然选择的目标是准物种，而误差阈的存在对生物体所能携带的基因组的长度施加了一个限制。

One of such distribution functions can be used to describe satisfactorily the three-dimensional quasi-stationary grain size distribution obtained from experimental measurement results for pure iron by serial sectioning, and those obtained from computer simulations by vertex method, surface evolver method, phase-field method, Monte Carlo method with Potts model.

采用纯Fe实验数据以及顶点法、基元演化法、相场模型和Monte Carlo法进行了验证，结果表明，函数族中峰值左偏的函数适合三维准稳态晶粒尺寸分布的定量表述。

This paper deals with an existence theorem for a class of quasi-equilibrium problem s in com-pletp metric spaces.

研究完备度量空间中一类拟均衡问题的可解性，由此导出著名的Ekeland变分原理。

We propose and implement a quasi-discrete Hankel transform algorithm based on Dini series expansion in this paper.

我们提出了一种基于Dini级数展开的准离散汉克尔变换算法。

By using the quasi-harmonic Debye model, we obtain the thermal expansivity α, Debye temperature Θ, heat capacity CV and the entropy S.

利用准谐德拜模型，很好的得到了热胀系数，体模量随压力和温度的关系。

In this paper, propagation of quasi-continuous wave in photonic crystal fiber is theoretically and experimentally investigated.

对准连续光在光子晶体光纤中的传输特性进行了理论和实验研究。

Likelihood inference will be developed using the exponential family of distributions. Extensions to quasi-likelihood methods will also be discussed, which allow the relaxation of some model assumptions.

运用指数族分布发展似然推断，还将讨论允许放松一些模型假设的准似然方法的扩展。

A new discrete reaching law is presented to improve the reaching process of discrete exponential reaching law.The discrete-time variable structure control system designed by this reaching law can not only weaken the chattering and control the system state approach to zero diminishingly,but also keep the basic property of quasi-sliding mode which can cross the switching surface step by step.This method improves the reaching process and enhances the control quality of the control system.

为了改善离散指数趋近律的趋近过程，提出了一种新的趋近律，利用该趋近律设计的变结构控制器，不仅能够大幅度削弱抖振，使系统运动最终趋于原点不存在稳态振荡，而且能使系统的准滑动模态保持步步穿越切换面的基本属性，有效地改善了趋近过程，提高了控制品质。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。