一种压缩标准.

In this paper, an extended divide and conquer algorithm is intended proposed, which is for solving the real symmetric band generalized eigenvalue problem under distributing environment Eigenvalue partition theorem is presented and proved Based on divide and conquer by extension, this algorithm computes generalized eigenpaires of symmetric band matrix pencil by bisection and generalized Rayleigh quotient iteration Theoretic analysis and numerical results show that this algorithm is better than the classic software package LAPACK when bandwidth is small and the scale is large Combined with multisection, which has good parallelism, it got good effects under distributed environments

提出了分布式环境下计算对称带状广义特征值问题的一种扩展分治算法，给出了特征值分割定理及其证明算法在扩展分治的基础上，利用二分压缩结合广义Rayleigh商迭代计算广义特征对理论分析和数值实验表明，对于窄带宽大规模的广义特征值问题，该分治算法明显优于LAPACK软件包结合并行性好的多分法，在分布式环境下获得了很好的并行效果1 引言本文研究了对称带状广义特征值问题Ax =λBx ( 1)的并行计算，其中，A ，B均为半带宽为r的n阶实对称带状矩阵且其中之一是正定的本文总假设B是正定的求解此问题有两种传统方法，第1种方法是通过计算矩阵B的Cholesky分解，将问题( 1)转化为标准特征值问题[1～3] ，进一步

JPEG2000 is a new image compressing standard, it has the characteristic of high compression ratio and low distortion.

JPEG2000是一种新的图像压缩标准，具有高压缩率、低失真度和灵活高效的特点。

Methods Acˉcording to the standard YY0290"Intraocular Lens",dioptric power,differentiate rate,axial displacement under presˉsure and optical eccentric distance of10types of intraocularlens were tested.

按照行业标准YY0290《人工晶体》规定的方法对国内外10种一件式或三件式人工晶体的屈光度、分辨率、压缩力下轴向移位和光学偏心等指标进行了测试。

In this paper, an improved technique of static image compression is completed based on the JPEG standard, the technique uses a new Fourier analysis technique called the arithmetic Fourier transform to compute discrete cosine transform coefficient.

本文在国际标准组织制定的静态图像压缩标准JPEG的基础上，提出了一种采用新的傅立叶分析技术—算术傅立叶变换来快速计算离散余弦变换系数值，改进了静态图像压缩技术，克服了DCT运算速度慢的缺点，同时克服了传统的快速离散余弦变换程序复杂，子进程多的缺点。

At first, this paper introduces JPEG compression, and proposes a method of DCT which is fit for embedded system.

首先，本文介绍了JPEG图像压缩的标准，提出了一种适用于嵌入式系统的DCT算法。

It is based on a polynomial model,which can describe the change tendency of motion vectors within a small area.

1引言H.264是联合视频专家组提出的一种全新的视频压缩标准，它采用了许多与以往标准不同的编码特性。

A one-pass rate controller for compressed video encoders that can be configured to comply with buffering schemes specified in video-coding standards.

一种用于压缩视频编码器的一次性速率控制器，其可以配置为遵守在当前的视频编码标准中所规定的缓冲方案。

A rate-distortion model is presented in order to make use of the down channel of deep space effectively and analyzed the error of image loss compression exactly.It is fit for CCSDS image compression standards based on wavelet transform.

为了能更好地利用有限地深空通信下行信道资源，更准确地分析图像有损压缩的失真大小，提出了一种适合于CCS-DS基于小波变换图像压缩标准的速率-失真模型。

A rate-distortion model is presented in order to make use of the down channel of deep space effectively and analyzed the error of image loss compression exactly.It is fit for CCSDS image compression standards based on wavelet transform.

中文摘要：为了能更好地利用有限地深空通信下行信道资源，更准确地分析图像有损压缩的失真大小，提出了一种适合于CCS-DS基于小波变换图像压缩标准的速率-失真模型。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。