模函数

The velocity distribution of the numerical simulation and the theoretical equations calculation are compared on the condition of axial symmetry.

结果表明，在轴对称条件下，对数模、理论计算的速度分布进行对比分析，证实了旋涡流场不仅是径向的函数，而且还是轴向的函数。

The pupose of the research is to develops public key encryption and digital signature shemes based on matrix canonical decomposition problem, or matrix diagonalization problem over Z/n, the ring of integers with modulo-n addition and multiplication in particular, where n is an RSA modulus.

本课题研究基于矩阵经典分解问题，特别是Z/n上矩阵对角化问题的公钥密码与数字签名算法，其中n是一个RSA模数。新算法采用由一个矩阵多项式构成的多维单向陷门函数，其单向性由矩阵对角分解问题(即通过相似变换将矩阵化为对角型的问题)的复杂性来保障，对该函数求逆的陷门由矩阵的特征值或特征向量提供。

The paper includes:The author calculate the structures inner force and displacement of the free end , analyze the influence of the height and the value of pretress of cable by making use of ANSYS 9.0 soft, pose the concept of critical prestress,conclude the function relation between displacement of the free end, initial strain and the height of cable ,analyze the dynamic properity and point out that Newmark-β method should be adopted when we analyze the dynamic properity of the cable-stayed spatial structure with direct integral test to guarantee the contribution of high mode,finally conclude the functional relation among coefficient of earthquake inner force, initial strain and the height of cable, wish to get some helpful conclusion applied to cable-stayed spatial truss design.

本文系统介绍了斜拉空间桁架竖向地震反应的分析理论与方法、详细分析了斜拉空间桁架结构在静力和竖向地震作用下的受力性能，主要内容包括：利用通用有限元软件ANSYS9.0计算了斜拉空间桁架在静力和竖向地震作用下内力及自由端位移分布规律并得出地震内力系数与节间位置、预应力以及斜拉索高度之间的函数关系；详细分析了斜拉索中施加的预应力以及斜拉索高度的变化对于该种结构内力及自由端位移的影响并提出了斜拉空间桁架的临界预应变概念，进而得到了自由端位移与初始预应变以及斜拉索高度的函数关系，即：△=-(40h+2180)ε+9.8；分析了该种结构的动力性能，并指出：在时域内采用直接积分法计算该种结构的动力响应时，应该考虑采用不引起振幅率减小的Newmark-β法，以保证高阶模态响应的贡献仍然保留在响应中而不致于被忽略。

All functions and methods defined in this module are equivalent to the C functions with ALprefixed to their name.

本模组所定义的所有函数及方法和C中以AL前缀的同名函数是等价的。

All functions and methods defined in this module are equivalent to the C functions with "AL" prefixed to their name.

本模组所定义的所有函数及方法和 C 中以"AL"前缀的同名函数是等价的。

The abnormal values and pseudo-modes existed in the measured FRF can usually introduce errors into the result of structure modification, for the purpose of eliminating these errors and carrying on dynamic modification of complex structures in a large scale, the fictitious force modification method, which is based on constructed FRF, is proposed and it can restrain the influences of test errors on modification results remarkably. Furthermore, it is more convenient and precise.

实测频响函数中存在异常值或虚假模态对结构修改会产生较大的误差，为消除其影响，并进行复杂结构的动力大修改，本文还提出了基于构造频响函数的拟力修改法，这种方法能显著地抑制测试误差对修改结果的影响，且处理方便、精度高。

By using the method of expanding the aperture function into a finite sum of complex Gaussian functions, approximate closed-form propagation equations of TMn0-Gaussian beams diffracted by hard-edged parallelogram aperture s are derived.

通过将硬边光阑函数展为复高斯函数之和的方法，在直角坐标系下研究了TMn0模高斯光束通过有平行四边形光阑的衍射，得到了近似的解析传输公式。

Methods CT water phantom was scanned using the regular condition of seaning first, then changed one of seaning conditions （ thick slice, exposure capacity, reconstruction of function, kV, FOV and CT- scanner） to scan the water phantom again.

通过固定扫描条件对机器自带水模进行扫描，然后在其它条件不变的情况下，改变其中1个扫描条件（层厚、曝光量、重建函数、仟伏、FOV、机器）再对水模各扫描1次，测量CT图像一定兴趣区的CT值与固定扫描条件的图像相对应ROI的CT值进行比较。

The modal testing measures the frequency call function of test points on scatter-gun and recognizes the step modal parameters by single point momentary stimulation and multi-points measuring.

全枪模态试验通过单点瞬态激励、多点测量方法，测出机枪上各测点的频响函数，识别出机枪的各阶模态参数。

In order to help for evaluating properties of soil in interaction more precisely, the paper applies elastic theory solution on different modulus in tension and compression for vertical load into semi-infinite elastic body. Through quoting Heaviside function, the solution of elasticity theory with different modulus in tension and compression is established founded on the solution of elasticity theory for the material incapable in tension and Mindlinsolution for equal modulus.

为使地基土在共同作用中的行为特征评价更为合理，本文应用了半空间问题竖向荷载下地基土的拉压模量不同弹性理论解，该理论解是通过引入Heaviside函数，利用不能承受拉应力材料的弹性理论解并结合拉压模量相等的经典Mindlin解而获得。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。