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Alice's short black hair was not in its usual spiky do—it was smoothed into sleek pin curls around her pixie face, which wore a contrastingly businesslike expression.

艾丽丝一头黑色短发不再像平时一样一根根向外刺——而是顺从地拢成一卷卷贴合在她小精灵般的脸蛋上，此时这张脸上带着一种极不协调的职业表情。

This algorithm simplifies the convolutive mixture problem into the instantaneous mixture problem from a new point of view, so it avoids domain transformation and convolution operation, as well as decreases the complexity.

由于没有使用域变换而是从新的角度将卷积混合问题简化为瞬时混合问题，避免了卷积运算或域映射过程，降低了算法的复杂度。

The so called Wiener systems, composed by a convolutive subsystem followed by a memoryless nonlinear distortion, is a special case of nonlinear mixing model.

所谓的 Wiener 系统，是由源信号首先通过一个卷积滤波器，卷积后的信号再被非线性扭曲。

Then,the state of the art and the challenge problems in ICA research field are discussed.The algorithms for standard and extended ICA models,including blind deconvolution,blind separation of convolutive mixtures,nonlinear instantaneous mixtures,are briefly analyzed.

讨论了目前ICA的几个研究方向的发展现状和面临的问题，分析了ICA基本模型和几种扩展模型的求解算法，包括盲反卷积、卷积混和的盲分离、非线性瞬时混合的盲分离。

We deduce an BSS algorithm for time-delay mixture model and an algorithm for the convolutive mixture model under the principal of Maximum Output Entropy, separately. We also provide a comparison between the two separating structures of the convolutive mixture model.

我们在最大输出熵的原则下，分别推导得出了一种时延混合模型的盲分离算法和卷积混合模型的盲分离算法，而且给出了对于卷积混合模型的两种分离结构及两者之间的优缺点。

In this paper, a time-domain blind source separation algorithm for non-stationary convolutive mixtures is proposed by reprogramming the vectors of convolutive mixture model and generalizing the joint approximate diagonalization method.

摘要该文将卷积混合盲源分离模型中的向量进行重新规划并对联合近似对角化方法加以推广，提出一种非平稳卷积混合信号的时域盲源分离算法。

The original Infomax is only applied in the instantaneous mixture and in the single channel blind deconvolution. This thesis applies the idea to blind sources separation in multiple channel convolutive mixture.

Infomax算法适用于瞬时混合情况下的盲分离和单通道盲解卷积问题，本文将Infomax算法推广到多通道卷积混合，对算法进行仿真，取得了不错的效果。

Final, the number of the sources is estimated with multistage clutstering techniques and the corresponding sources are extracted. The proposed algorithm can avoid suffering the error propagation of the deflation technique, which exists in all sequential algorithms.4. A new post-processing method for convolutive mixtures blind speech separation is proposed.

针对现有卷积混合盲源分离的频域算法存在的问题，即恢复出的信号是源信号和一个未知的滤波器的卷积，且由于部分频率点处盲源分离方法的失效和无法精确解决排列和尺度模糊问题，分离出的信号中会泄露进其余的信号分量，影响分离性能。

Then, the relation between vibration and sound, the acoustic holography method, the indeterminacy and identifiability of BSS, the BSS algorithm are discussed in detail. Based on above researches, the dissertation is divided in following four sections. The first section investigates the BSS algorithm suitable to acoustic feature separation. The algorithm of the joint approximate diagonalization of eigen-matrices is proposed. The spectra or the time-frequency distributions of source signals are the interesting features in ABD and they are separated from mixing signals by JADE algorithm. Then, the convolutive mixing model is transformed into a high-dimension instantaneous mixing model, and the deconvolution of source signals is achieved by the joint approximate block diagonalization of eigen-matrices. The proposed algorithm has a global minimum, and it is unsensitive to noise interference.

论文首先概述国内外声学诊断研究进展与盲分离研究进展，给出机器噪声声场与盲分离的数学描述，讨论了声振辐射、声全息、盲分离模型、盲分离可解性、盲分离结果不确定性、分离算法等基本问题，在此基础上，论文的研究工作分为以下四个部分：第一部分研究适用于声学特征分离的盲分离算法，提出基于特征提取的联合近似对角化盲分离算法，该算法以频谱特征或时频特征作为分离目标，从混合信号中分离源信号频谱特征或时频特征，最大限度地保留了与声学特征提取有关的频谱特征或时频特征，采用模型变换把卷积混合模型变换为一个高维瞬时混合模型，通过联合近似分块对角化算法实现源信号频谱特征与时频特征的盲反卷积。

The Secret Doctrine, Vol 1 Cosmogenesis (350 pages)and The Secret Doctrine, Vol 2 Anthropogenesis (387 pages) This massive study is an astonishing document.

秘密教义1卷宇宙奥秘(350页)、教义、2卷anthropogenesis (387页)这是一个惊人的大规模研究文献。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐