查询词典 noise

Chaper 3 is general description of ADA encryption. Chapter 4 deals with the transform domain encryption. Includes the element of perfect and quasi-perfect transform domain encryption, and presents two type new schemes. Chapter 5 deals with asynchronous ADA encryption. Extends the general theory and model of asynchronous ADA scrambling, and introduces two type phase-distortion-free a synchronous ADA schemes. Chapter 6 is about new direction of ADA encryption. Includes TASI scrambling, transform domain dummy insertion scrambling, noise coving scrambling and other multi-dimension ADA scrambling, and proposes an adaptive dummy spectrum insertion asynchronous scrambling and a new adaptive noise-coving DFT scrambling algorithm. Chapter 7 is on permutation key. presents part results on permutation features, selecting criterion and constructing method. Chapter 8 introduces the hard and software design of a common ADA encryption/decryption system, and presents the experimental results on several proposed ADA encryption schemes.

第一章为绪论；第二章为语声信号、及其处理基础；第三章为模数模加密的一般描述；第四章为变换域加密研究，包括变换域加密机理，变换域完善与准完善保密研究，提出两种新的变换域加密方案；第五章为异步模数模加密研究，扩充了异步模数模加密的一般理论，介绍了两种新的无相位失真异步加密方案的原理与实现方法；第六章对模数模加密新方向：TASI应用途径、变换域伪谱插空置乱、噪声掩盖、多维置乱加密的原理和方法进行介绍，提出了自适应伪频插空异步模数模置乱算法与自适应DFT系数噪声掩盖置乱新算法；第七章为置换密钥性质、筛选准则以及构造方法研究的部分结果；第八章介绍了通用模数模加/解密实验系统的硬件、软件研制概况，并给出了几种加密方法的实验结果。

Using symmetrical component method, the correlation analysis on calculated results of cross correlation coefficient of on-site collected noise is performed and the conclusion is obtained: the interphase noise of three-phase power transmission line is relevant a certain extent.

首先介绍了中压电力线信道噪声通用模型，对现场采集的噪声进行互相关系数计算，并采用对称分量法进行相关性分析，得出三相电力系统相间噪声具有一定相关性的结论。

Spatial white noise is considered first then the spatial colored noise. Two method based on 1st and 2nd order cyclic moments, CERA, and then 3rd order cyclic moment, MCERA, are proposed separately.

分白噪声及有色噪声两种情况，分别提出了基于一、二阶循环矩的CERA方法和基于三阶循环矩的MCERA方法。

The methods of the first-and second-order cyclic statistics-based hybrid and the first-and third-order cyclic statistics-based hybrid have been proposed. Using the first order cyclic statistics, the frequencies of harmonics corresponding to nonzero mean multiplicative noise were obtained. Then the mean of multiplicative noise can be estimated. With this, harmonics can be retrieved by second or third order cyclic statistics.

提出了基于一阶、二阶循环统计量的混合方法和基于一阶、三阶循环统计量的混合方法，即先利用一阶循环统计量得到对应非零均值乘性噪声的谐波频率，再求出与谐波频率对应的乘性噪声均值，去均值后用二阶或三阶循环统计量来恢复谐波。

In chapter 6, within a two-band tight-binding model driven by a dc-ac electric field, we investigate the effect of external noise on the transport property of electrons by controlling the strength and the decay constant of the noise.

在第六章，利用直交流电场驱动下的双带紧束缚模型，我们研究了外部噪声对电子输运性质的影响。

With increasing of the noise strength, the height of the current peaks will decrease, and the width will increase: a similar change will appear when we increase the decay constant of the noise.

随噪声强度的增加，电流共振峰宽度增加，高度降低；增加噪声衰减常数会有类似现象发生。

Press conduction method deci:Can is divided into the noise of common mode and string module noise.

按传导方式分：可分为共模噪声和串模噪声。

The 21st century is a century of life science,the mathematical biology advanced rapidly, and the study in determinate system is perfect. In face,the species ecology systems are often subject to ,some uncertain factors,white noise,whether the presence of such noise affects these results that we have obtained has received exten sive attention ,which makes the study about stochastic system more and more important.

21世纪是生命科学的世纪，生物数学的发展突飞猛进，百花争妍，其中对确定性系统的研究已经较为完善，而实际上的种群系统常受到一些不确定性因素的干扰，即白噪声的干扰，研究白噪声的存在是否影响种群生态系统以及是否使原有的结果发生变化已受到广泛的关注，这就使对随机系统的研究显得尤为重要。

While the negative coupling suppresses the fluctuations in the laser system and changes the system from stochastic process to deterministic process.

标 签 正耦合负耦合加性噪声倍增噪声涨落 positive coupling negative couling additive noise multiplicative noise fluctuation

Din : it is a kind of noise, but it is a kind of confused noise that continues .

噪音的一种，是一种混合并持续的噪音

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。