波导

An approximate nth derivative of an analytical signal can be obtained by applying n times of the wavelet transform to the signal.

用Haar小波对信号进行n次连续小波变换，可得到信号的近似n阶导数。

Two new functions based on the property of bubble wavelet are proposed. An approximate 2nd derivative of an analytical signal can be obtained by applying n times of the wavelet transform to the signal, the signal-to-noise ratio can be enhanced greatly.

根据小波的定义和墨西哥帽小波的一些特点提出了两种简单的窗口函数，利用它们对模拟高斯信号求2n阶近似导数的同时滤除了噪声，同时还可分离重叠峰，并讨论了尺度因子对变换结果的影响。

The quantum conductance can be largely reduced by interference when there is mismatch between the Fermi wave vector and the atomic lattice along the circumferential direction.

当相邻缺陷沿周长方向的距离与费米波矢长度不匹配时，体系的量子电导因为波函数发生相消干涉而被极大的降低。

Here, a difference between transmittances of P and S wave of polarized light having passed through the polarizing coating layer from the light guide panel body is at least 50% in a visible light area.

此处，在可见光区域内，从光导板主体穿过偏振涂层的偏振光的P波和S波的透射率之差至少为50％。

A new catalytic kinetic method with second derivative oscillopolarography detection for determining trace amounts of NO〓〓 has been developed. The method is based on the catalytic oxidation of Amarath by potassium bromide in the diluted H〓SO〓. The detection limit of the method is 2.8×10〓g/ml, the linear range of the determination 〓is 0.6～14ng/ml for NO〓.

首次研究了鸡冠红的示波极谱行为，并发现NO〓〓在稀硫酸介质中对KBrO〓氧化鸡冠红褪色反应具有强的催化作用，本文采用两阶导数示波极谱法作监测技术，测定了该催化体系的表观反应级数及动力学方程，建立了催化动力学伏安法测定痕量NO〓〓的新方法。

In this paper,an algorithm based on wavelet transform has been developed for detecting QRS complexes of signed-lead electrocardiogram signal.

介绍了一种使用小波变换对单导联心电信号QRS复合波进行检测的方法。

With the id￠=0 vector control and the feedforward compensation of cogging, the minimum force ripple and maximum efficiency control of non-sinusoidal BEMF SPM motors can be obtained.

考虑永磁磁链谐波对永磁磁链导数矢量幅值及相位的影响，通过引入d￠q￠轴坐标系，提出一种id￠=0的非正弦波BEMF SPM电机矢量控制新方法，结合齿槽前馈补偿可以实现非正弦BEMF SPM电机的最小推力纹波最大效率控制。

Additionally, we analyzed the thermal-decay rules of LPGs. We use temperature-compensating package to reduce the sensitivity of temperature of LPGs. At the end of this paper, we summarized the key technologies required during practical application of LPGs, During this paper, we obtained some inventional results as follow: 1. We deduced waveguide modes of single and many mode fibers by use of Maxwell equation.

论文工作期间，主要取得了以下几方面的成果：一、我们利用Maxwell方程，推导了单模和多模光纤的导波模式，同时利用耦合模原理，简要推导了反射式光纤光栅的模式场分布及相应的模式特征方程；采用弱导光纤近似理论，严格推导了透射式长周期光纤光栅的模式场分布，得到了光栅周期与光波长间的对应关系，这是分析长周期光纤光栅光谱特性的有力工具。

On this tache, new members could know and realize fathers' elegant demeanors through the small bars. For instance, mature and sober Bobo, the heavyweight person with ability Guide Feng, golden brand belle emcee Mingyuan, bearing the palm to soft Xijing, and the three towards person besides three times job-hopping Laozhuang, they all had a profundity impression to people.

在这个环节，通过小字条的介绍，让刚刚加进俱乐部的新人们更好的了解和领略前辈们的风采，比如成熟和稳重的波波、重量级人才冯导、金牌美女主持明媛、获奖拿钱拿到手软的喜景、还有三朝元老兼三次跳槽的老庄等等都给大家留下了深刻的印象。

The basic principle and experimental method of nonlinear guided-wave optics were employed to investigate all kinds of characteristics of nonlinear dynamic grating and its application by studying Kerr effects of nonlinear multilayers media film as well as interactions between guided wave and grating vector.

采用非线性导波光学基本原理和实验方法，通过对非线性多层介质薄膜的光学克尔效应的研究，导波与光栅矢量相互作用的研究，进一步探讨了非线性动态光栅的各种特性及其应用。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。