立基于

By using canonic signed digit to represent each coefficient of FIR filter and local search method to optimize the coefficients, we implement a multiplier-less FIR filter.

利用卫星数字电视广播系统中接收信号的频谱特性，提出一种基于离散傅立叶变换的载波恢复算法。

By comparison between SMM HXRBS observation and ground observation of Hα and CaIIK lines, especially through the combined study between SMM HXRBS observation and chromospheric flare models, the results show that: in the initial stage of impulsive phase, there is a correlative relation betweem Hα line intensity and hard X-ray emission; different spike in hard X-ray flux curve represents the burst at different location; the energy taken by non-thermal electron beam is larger than the radiative loss in chromosphere; for the flare studied here, the chromospheric evapporation is explosive; if the chromosphere is in balance between electron beam bombardment and radiative loss, the column mass density at the top of chromospheric flare model can not be taken as measure from the source of electrons and then the total material between the source of electrons and the top of chromosphere can be estimated.

通过一个具体耀斑的SMM HXRBS观测结果与同时基于地面得到的Hα和CaⅡK可见光谱观测结果对比，特别是将硬x谱观测结果与色球半经验模型联立研究，结果显示出：在脉冲相上升段，硬x发射与Hα辐射之间存在对应关系；硬x线光变曲线中不同脉冲爆发分量不太可能起源于同一位置；硬x辐射所反映的高能非热电子总携带能量大于色球总辐射损失；对所研究的耀斑而言，其色球蒸发过程是爆发性的；在详细比较了非热电子色球总沉积和色球辐射损失的基础上，指出半经验模型中色球顶部柱数密度不能看成是从非热电子源度量的，从而估计了色球顶部到非热电子源之间的总物质。

FLEM FOR GROUND SUBSIDENCE CALCULATION AND DAT... LIU Li-min;LIU Han-long;LI Jian-gang;LIAN C... mining engineering;GIS;FLEM;ground subsiden...

基于GIS的地下开挖沉陷计算的有限层法及数据场表达刘立民；刘汉龙；李建刚；连传杰 2005 采矿工程；GIS；有限层法；地表沉陷；数据场；六。。。

Medium and long-term strategy must be planned for Lida Company after two years fast development.

基于两年的快速发展，立达公司迫切需要制定自己的中长期发展战略。

To widen the application of PSTD algorithm, a new non-uniform pseudospectral time-domain algorithm is developed in the latest years, and it is highly desirable.

文中第四章分别研究了基于非均匀傅立叶变换以及网格插值方法的两种非均匀时域伪谱算法，并就它们的优缺点和适用范围进行了讨论。

The relationship between displacement of double diffracting gratings and the intensity of Moiré signal is studied by applying theories of physics optics and Fourier optics, a mathematical model of linear displacement measure based on the Moiré signal is established, and computer-simulated pattern changes are obtained.

应用物理光学和傅立叶光学理论，分析了双级光栅衍射时的相对位移与激光莫尔信号强度的关系，建立了基于激光莫尔信号的精密位移测量数学模型。

Based on events relating to the trial, crucifixion, and resurrection of Jesus Christ, the passion play enacts the central drama of the Christian faith.

基于事件与审判，在十字架上，复活的基督，激情发挥立中央戏剧的基督教信仰。

At the same time, chaotic pseudo-random sequences generator based on nonlinear dynamic filter security model are constructed to select the frequency hopping points for NDFT, improving the overall system security. 3、Aiming at replay attack of networks in the remote speaker recognition systems and distributed databases speaker recognition systems, a time-stamp watermarking method is brought, which quantizes magnitude coefficients of NDFT. The time-stamp watermarking is embedded into the user's voice sample/voice characteristic information to resist on the replay attack.

同时该类算法采用以非线性动力学滤波器为基础的伪随机序列发生器构造跳频序列来选择频率变换点集合，有效提高了系统的安全性。3、针对远程说话人识别系统以及数据库分布式说话人识别系统存在易受网络重放攻击的缺陷，本文给出一种基于非均匀傅立叶变换的&时间戳&水印量化算法，通过把时间戳水印嵌入待识别用户的语音样本/语音特征信息中，可以有效解决此类缺陷。

Rased on the high-order statistics of data,the feature basis function which is obtained by ICA from image data are localized in space as well as in frequency and orientation ,fit image data well.

传统的的傅立叶变换、离散余弦变换、主分量分析等线性变换方法都是基于全局变换的思想，无法反映图像在时频域的局部特征。

A new algorithm of the regularizing image restoration based on wavelet transform in the frequency is presented and the advantages of the Fourier transform and wavelet transform are, respectively, adopted in this algorithm.

将图像复原正则解的小波变换在频域中执行，提出了一种基于频域的小波变换图像复原正则化方法，这种方法同时利用了傅立叶变换和小波变换各自的优点。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。