查询词典 quasi-periodic

In this chapter, we introduce the theory of the radial basis function and the hyperbolic partial differential equation. In addition to this, we summarize in detail the knowledge of the konwn four kinds of multiquadric quasi-interpolation.

介绍了一些有关径向基函数和双曲型偏微分方程的理论，对已有的四种Multiquadric拟插值做出了详细的概括。

But the Creator's common device for ordinary people is to let the passage of time wash away old traces, leaving only pale-red bloodstains and a vague pain; and he lets men live on ignobly amid these, to keep this quasi-human world going.

然而造化又常常为庸人设计，以时间的流驶，来洗涤旧迹，仅使留下淡红的血色和微漠的悲哀。在这淡红的血色和微漠的悲哀中，又给人暂得偷生，维持着这似人非人的世界。

During the 1950s Pollock continued to produce figurative or quasi-figurative black and white works and delicately modulated paintings in rich impasto as well as the paintings in the new all-over style.

1950年，波拉克继续生产了修饰丰富的或类似修饰丰富的白的或黑的工作，优美的微妙的已调整的绘画，用丰富的厚涂颜料绘画法和所有新风格绘画。

For the problem of data s mismanagement, separated usage of study tools and hard for awareness processing widely existing in the traditional collaborative learning system, the nested knowledge space model is presented in this paper, which includes the concepts of knowledge domain, inclusion relation, correlation relation, quasi-order relation and parallel relation among the knowledge domain,and knowledge space etc.

针对传统协同学习系统中普遍存在着学习材料组织混乱、学习工具隔离使用和感知处理困难等问题，本文提出了嵌套式知识空间模型，该模型包含知识域、知识域之间的包含关系、相关关系、拟序关系和并行关系以及知识空间等概念。

In conclusion, by consideration of viscosity effect of material at propagating crack-tip, it is established in the paper the unified continuous singular crack-tip field in linear-hardening material under the condition of incompressibility. The plastic shock is eliminated that exists in non-viscosity solutions. What's more, the dynamic and quasi-static solutions are united together when the Mach number approaches zero.

总之，通过考虑扩展裂纹尖端材料的粘性效应，本文建立了幂硬化材料在不可压缩条件下扩展裂纹尖端的统一的连续奇异性场，消除了无粘性解中存在的塑性激波，在马赫数趋于零时动态解和准静态解得到了统一。

By Monte Carlo simulations, the effect of the dispersion of the quasi Gaussian size distribution on dynamic behavior of the system is investigated in the same inelasticity case.

随后，建立了粒径为分形分布的准一维颗粒气体的动力学模型，其中每个颗粒受高斯白噪声驱动，研究了系统稳态的动力学特性。

With an additional terminal cost in the standard finite horizon objective functional and a terminal inequality constraint,the prediction is expanding quasi to infinity but the control profile to be determined by on-line optimization is only of finite horizon.

开环优化问题含有附加的终端代价项和终端约束条件，这样预测时域延伸至准无限，而需在线优化获得的控制函数仅为有限时域。

We give a two-parameter penalty function and its exact penalty theorem for inequation constrain- ed optimization,meanwhile,We propose a quasi Newton algorithmfor solving the unconstrained nonlinear penalty problem and study its convergence,Numerical examples illustrate the feasibility of the algorithm.

对于含约束不等式的优化问题，构造双参数精确罚函数并给出精确罚定理，提出了一个求解这种罚函数问题的布鲁丹族拟牛顿算法，研究了算法的收敛性与收敛速度，并进行了数值试验，证明了可行性。

It has been prepared for the investigation of inexact quasi-newton method for operator equations in infinite dimensional space.

文献[1]对有限维空间中非线性方程组的不精确拟牛顿法的收敛性进行了研究，为无穷维空间上的算子方程的不精确拟牛顿法的研究作好了准备。

In the research of complex stochastic models, Quasi-Birth-and-Death processes whose level and phase are all infinite will take place frequently.

在复杂随机模型的研究中，经常会出现水平和位相都是无限的拟生灭过程，对这类过程，平稳分布的计算仍然是一个未很好解决的难题。

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。