求和

PART 1 : REQUIREMENTS AND TEST METHODS FOR SNOWBOARDS WITHOUT INSERTS.

第1部分：非插入式滑雪板的要求和试验方法

This paper describes the improvement in the personnel security interlock system of Beijing Electron Positron Collider .

本文介绍北京正负电子对撞机人身安全联锁系统的改进，主要叙述了人身安全联锁的要求和新系统方案的确定。

With the quick development of Electronic Commerce and the enterprise application on Internet, Web application server becomes a hot research point.

随着电子商务应用的需求和Internet上企业级应用的迅速发展，Web应用服务器成为研究热点。

Therefore to setup and guarantee the members' democratic rights is the emphasis of the intraparty construction and also the essential request and important expression.

因此确立和保障党员民主权利是党内民主建设的重点，是发展党内民主的本质要求和重要体现。

In every period, do the following operations:# For each 8*8 block, do the discrete cosine transform, then take out direct current coefficient in each block, using the transformation above for each DC coefficient, the gold stands for the code of the spread-spectrum we use when embedding the different watermark bit in different frames, after all of the watermark information which we want to embed is embedded, then do the inverse discrete cosine transformation, and store the current frame in a new file.

于是利用DCT变换域的这点重要的几何不变性，我们可以推导出一种能够抵抗几何攻击的视频水印算法，即将所需要嵌入的水印信息以127位扩频序列作为辅助，以求和值形式嵌入到DCT变换后的每个宏块的每个DC系数当中，具体嵌入和提取算法如下：根据使用的扩频序列的长度N，基于相关的嵌入器需要选取包含N帧的视频子序列，令这N帧视频子序列作为一个嵌入周期，对于每N帧视频子序列做如下的操作，#即对于每个8×8的像素块进行DCT变换，然后取出每个DCT变换后的直流分量，对于每个DC系数，做如上所述的变换，其中gold为在第k帧中嵌入第i位水印信息时使用的扩频码字值，待将所有需要嵌入的水印信息全部嵌入后，再做反DCT变换，保存当前帧。

Based on the summarizing of the exiting algorithms of the texture mapping and antialiasing, this paper goes deeply into the basic theory and processing of texture mapping. The texture compress algorithm which can satisfy the need of the memory and time is given for the stochastic sampling in the inverse texture mapping; the geometry transformation in the texture mapping are discussed and the concepts of the unitary parametrization and the patch parametrization is proposed, some kinds of the unitary parametrization methods of parametric surfaces and the geometry transformation in the patch parametrization are also presented; in order to solve the aliasing in the parametrization of intermediate surface-sphere in two-part texture mapping, an area-preserving transformation is presented also; to improve the quality of the graph the aliasing in the texture mapping is analyzed from the aspect of signal process, and the modified summed-area tables algorithms is proposed; the distortion of the scanline conversion algorithms under perspective transformation is analyzed and the proper interpolation algorithm is presented so the aliasing problem of the polyhedral object after the unitary parametrization is efficiently solved.

本文在总结现有的纹理映射和反走样算法的基础上，深入研究了纹理映射的基本原理与过程，根据反向纹理映射对纹理随机采样的特殊要求，提出了一种可满足存储空间和寻址时间的纹理压缩存储算法；通过对纹理映射中几何变换理论的进一步深入探讨，提出了整体参数化和面片参数化的概念，并给出了参数化曲面的各种整体参数化方法和面片参数化的几何变换形式；针对现有的两步映射算法所存在的中间曲面—球面的参数化问题，提出一种等积映射方法，较好地实现了由非参数化面片拼接而成的多面体表面的纹理映射；从信号采样的角度深入分析了纹理映射中走样产生的原因，提出了改进的区域求和表算法，使图形生成的效果有所提高；还分析了一般的扫描线算法在透视变换中所存在的问题，提出了一种正确的插值算法，从而解决了整体参数化后多面体表面纹理映射的几何变形问题。

I hear from above O pennant of war your ironical call and demand

我听到来自上空的，战争的旒旗哟，你那嘲讽的要求和呼吁

This can be expressed by where X i and x i are undeformed and deformed positions of a point in direction i respectively,d ij denotes the Kronecker delta,and the summation convention of summing on all repeated indices is used.

E ij [15，16]。这个可以用下面的式子来表达一个点Xi和xi在各自方向上未变形的和变形的位置 dij表示克罗内克δ，使用反复连续指数的求和。

In Chapter 4, by some important summation formulas, we prove some results of number theory, such as Jacobi two square numbers theorem and Lagrange four square numbers theorem.

第四章：应用第二章介绍的几个重要求和公式，证明了数论中的若干结果。

This paper reviewed the studies and standards for structural laminated wood adhesives and the testing methods in China.

介绍了国内木结构材用胶的研究和已制定的标准，简述了标准中对胶黏剂要求和试验方法，并提出对制定和完善结构材标准的建议。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。