不散射的

A fuzzy logic system for classification of hydrometeor type based on polarimetric radar measurements is described.

根据不同相态降水粒子的散射和空间取向等特征建立了基本形式为不对称的T型函数的模糊逻辑识别的隶属函数，完善了该识别方法的流程，并利用美国KOUN雷达的观测资料，详细讨论了利用双线偏振雷达观测资料识别降水粒子相态的方法，并对其在实际业务运用中的合理性和可行性进行分析探讨。

It is concluded that microcrystalline silicate and magnetite show characteristics of liquation in the back-scattered electron image.

本文研究认为，硅酸盐矿物与磁铁矿在背散射电子图像中表现为熔离特征，这种在透光显微镜下呈黑色不透明的微晶固体，是引发交代蚀变、具熔浆流体特点和超临界流体性质的地幔流体交代作用的一种微观表现。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

Moreover, Alice's adventure, with its un-sequential events—as the plot "murdered time" in story suggests—creates a time without its chronological flowing, but a time suspended. The time is on the one hand a moment that suspensive, and is a most intensive instant on the other hand, where all the forces encounter, resonate and emit at this ultimate second. Thus, the Dream becomes a purely intensive world, and Alice is the continuum of intensities which constitutes by dynamically linked events.

另一方面，爱丽丝的冒险由各种不连续的事件构成，正如故事中「时间被谋杀」的情节所示，时间不再呈现历时性的流动，取而代之的是一个介於进入与离开的钟摆低点时刻，这个低点瞬间既是一个不动的时间切片，也是强度最大的时刻，一切能量於此互相角力或各自散射，而梦境成为一处纯粹的强度世界，爱丽丝则是由诸事件的动态串联所组成的强度连续体。

Our main work is as follows: the stable laser mode theory in uniform plasmas is extended to non-uniform plasma cases; the discussion of the sufficient and necessary conditions for laser self-focusing in uniform plasmas is developed to non-uniform plasma cases; a quantitative approach to judge the impact of different plasma density distribution on laser self-focusing is proposed; the evolution properties of asymmetric laser filed in non-uniform and uniform plasmas are discussed and mechanisms that symmetric channel-like plasmas can confine the laser centroid around the plasma channel axes and symmetrize initially asymmetric laser beams are proposed; the formation of solitary standing wave in moderate plasma density is studied by PIC simulations and can be explained by stimulated Raman scattering of laser beams in plasmas.

主要工作为：把均匀等离子体中激光的稳定模理论推广到横向非均匀等离子体情形；把均匀等离子体中激光自聚焦的充分和必要条件的讨论推广到横向非均匀等离子体情形；给出横向密度分布不同的等离子体影响激光自聚焦的定量判据。讨论了初始不对称的激光场在横向非均匀及均匀等离子体中的演化特性，并提出了具有对称腔道结构的等离子体箍缩激光质心和对称化初始不对称激光场的物理机制。用粒子模拟讨论了激光场在等离子体中形成孤立驻波的过程，认为前向受激拉曼散射是发生此现象的可能机制。

The B spline and the NURBS spline functions commonly used in the electromagnetic scattering field are approximate splines, but they have to solve the control points and the numerical solution is unstable sometimes.

目前电磁散射几何建模常用的B样条和NUBRS曲面都是逼近样条，存在需要反求控制顶点，数值解有时不稳定的缺点。

Especially the deficiencies of the research work in scattered wave numerical simulation and its applications were summed up:①geometry is unseemliness;②lack of study systematically in the scattered wave field characteristic;③lack of study systematically in the scattered wave field recognize and its interpretation;④lack of the program for scattering image.

对散射理论及应用研究成果进行了系统评述，特别对前人关于散射波数值模拟和应用研究的不足进行了总结：(1)观测系统设计不合理；(2)对散射波的特征研究缺乏系统性；(3)对复杂散射波场的识别方法没有进行系统研究；(4)适合散射成像的处理软件还有待开发。

Based on the Lorentz-Mie theory, the single scattering characteristics of multi-dispersed spherical and multi-layered spherical particles are studied. The extinction coefficients, scattering coefficients, single albedos, single scattering phase functions and asymmetry factors of different clouds are presented. Numerical results for single scattering of spherical and non-spherical particles are obtained in the approximation of geometrical optics. The single scattering phase matrixes of non-spherical aerosols are calculated by using the T matrix method.

基于洛伦茨-米理论研究了服从一定尺寸分布的球形和多层球形粒子的单次散射特性，计算了各种不同类型云层的消光系数、散射系数、单次散射反照率、单次散射相函数以及不对称因子；利用几何光学方法计算了球形、非球形粒子的单次散射特性；利用T矩阵方法计算了非球形气溶胶的单次散射相矩阵。

The scarce annual global solar radiation data of Henan Province were extended to recent 40 years (1960￣1997) by experimental formula, and direct solar radiation and scatting solar radiation data were calculated by another experimental formula for the stations with the only global solar radiation data.

首先把河南省不完整的太阳辐射资料，用经验公式推算到近40年（1960～1997年）的资料。并把只有总日射资料的站，利用经验公式，计算出直接辐射、散射辐射资料。

Based on the 10060 Λ hyperons candidates events selected by us in 27. 6GeV longitudinal polarized e〓 deep inelastic scattering on unpolarized fixed proton target at HERMES, the spin transfer from fragmented u-quark to Λ hyperons, S〓, is measured.

本论文利用HERMES实验装置上的27.6GeV纵向极化正电子束与固定不极化质子靶的深度非弹散射的实验原始数据，重建了10060个Λ超子候选事例，对该过程中核子内被撞击的u夸克在碎裂过程中转移到Λ超子的自旋S〓进行了分析。

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。