系统函数

Chapter 1 gives a brief introduction to basic contents and methods of system identification and solutions of certain prob— lems met during the process of identificationIn chapter 2, the identification is accomplished by transforming the linear differential equation of a dynamic system into an algebraic form via block pulse functions .

第二章介绍采用正交函数BPF将含有未知参数的系统线性微分方程转化为代数向量方程求解，获取表征系统特性的传递函数或微分方程参数而达到辨识目的。

Part Two. The approximation theory of distributed parameter systems.

偏微分方程的特征函数理论是研究分布参数系统的一个有效方法，但分布参数系统的特征函数的求取十分困难。

The application of an appropriate apodization film to an ordinary lens makes the point amplitude response asymptotic to a Dirac-delta function, or causes an arbitrarily narrow depth of focus. This implicates that we may achieve lateral or axial superresolution through implementing an apodization film.

运用适当形式的光瞳滤波器可以改变成像系统点振幅响应的分布，使其具有类似于冲击函数(Dirac-delta函数)的形式，这样就有可能实现光学超分辨，但变迹术的运用往往会因其强烈的旁瓣效应而导致成像系统对比度的急剧下降。

We take them as examples for listing the microcanonical distribution,the canonical distribution and the grand canonical distribution for illustrating the idea.

本文根据刘维方程讨论了经典系统和量子系统处于平衡态时分布函数和统计算符应当具有的普遍函数形式，并以常用的微正则分布、正则分布和巨正则分布予以印证。

We take them as examples for listing the micro canonical distribution ,the canonical distribution and thegrand canonical distribution for illustrating the idea.

本文根据刘维方程讨论了经典系统和量子系统处于平衡态时分布函数和统计算符应当具有的普遍函数形式，并以常用的微正则分布、正则分布和巨正则分布予以印证。

Owing to the properties of wavelet packet functions such as compact support in time domain, localization in frequency domain and orthogonalities, the performance of the proposed system is enhanced greatly.

为了节约系统带宽，论文提出了小波包函数的"有效支撑长度"的概念，通过合理调节"有效支撑长度"上的小波包函数的长度达到节省系统带宽的目的。

V-system is a complete orthogonal system on L_2[0,1], which was constructed in 2005 by the author of this paper. V-system of degree k is composed of piecewise k-order polynomials, has multiresolution property, and is a generalization of Harr wavelet.

V系统是作者2005年构造的一类L_2[0，1]空间上的正交完备函数系。k次V系统由k次分片多项式组成，具有多分辨特性，是Haar小波函数的推广。

The experiment results indicate that V-system is an effective tool used to reconstruct complicated geometric information with both continuous and discontinuous signals. This is the essential difference among V-system, the classical complete orthogonal system with continuous functions and Walsh and Haar system which include intense discontinuous functions.

利用三角域上V-系统进行三维复杂几何模型的重构实验，实验结果表明，V-系统对复杂的、连续间断并存的几何信息重构特别有效，这与经典的连续正交函数系及强间断的Walsh及Haar函数系有本质的不同。

In thethesis we present a method to calculate the dielectric function of therandom composite and give the expression of the effective dielectricfunction.

在本文中，我们将计算周期性结构介电函数的表达式推广到无规系统，给出了无规系统有效介电函数的级数表达式，并得到了稀浓度时的解析表达式。

For the global priority and infinitely splittable cases,we show that starting from an empty configuration,the solution after any one round of best responses is of a constant-factor approximation.

本文分为以下三个方面：首先，我们考虑线性拥塞博弈，对总体加权延迟函数、用户延迟和函数、资源延迟和函数等三种系统目标函数，分别给出了稳定率的上界。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷