分布

Location: An epiphyte on tree trunk.

分布：附生於树干上。

This dissertation investigates the construction of pseudo-random sequences (pseudo-random numbers) from elliptic curves and mainly analyzes their cryptographic properties by using exponential sums over rational points along elliptic curves. The main results are as follows:(1) The uniform distribution of the elliptic curve linear congruential generator is discussed and the lower bound of its nonlinear complexity is given.(2) Two large families of binary sequences are constructed from elliptic curves. The well distribution measure and the correlation measure of order k of the resulting sequences are studied. The results indicate that they are "good" binary sequences which give a positive answer to a conjecture proposed by Goubin et al.(3) A kind of binary sequences from an elliptic curve and its twisted curves over a prime field F_p. The length of the sequences is 4p. The "1" and "0" occur almost the same times. The linear complexity is at least one-fourth the period.(4) The exponential sums over rational points along elliptic curves over ring Z_ are estimated and are used to estimate the well distribution measure and the correlation measure of order k of a family of binary sequences from elliptic curves over ring Z_.(5) The correlation of the elliptic curve power number generator is given. It is proved that the sequences produced by the elliptic curve quadratic generator are asymptotically uniformly distributed.(6) The uniform distribution of the elliptic curve subset sum generator is considered.(7) We apply the linear feedback shift register over elliptic curves to produce sequences with long periods. The distribution and the linear complexity of the resulting sequences are also considered.

本文研究利用椭圆曲线构造的伪随机序列，主要利用有限域上椭圆曲线有理点群的指数和估计讨论椭圆曲线序列的密码性质——分布、相关性、线性复杂度等，得到如下主要结果：(1)系统讨论椭圆曲线-线性同余序列的一致分布性质，即该类序列是渐近一致分布的，并给出了它的非线性复杂度下界；(2)讨论两类由椭圆曲线构造的二元序列的"良性"分布与高阶相关性(correlation of order κ)，这两类序列具有"优"的密码性质，也正面回答了Goubin等提出的公开问题；(3)利用椭圆曲线及其挠曲线构造一类二元序列，其周期为4p(其中椭圆曲线定义在有限域F_p上)，0-1分布基本平衡，线性复杂度至少为周期的四分之一；(4)讨论了剩余类环Z_上的椭圆曲线的有理点的分布估计，并用于分析一类由剩余类环Z_上椭圆曲线构造的二元序列的伪随机性；(5)讨论椭圆曲线-幂生成器序列的相关性及椭圆曲线-二次生成器序列的一致分布；(6)讨论椭圆曲线-子集和序列的一致分布；(7)讨论椭圆曲线上的线性反馈移位寄存器序列的分布，线性复杂度等性质。

The influence of magnetic field intensity on bed structure, pressure drop, minimum fluidization velocity, transition velocity, and liquid holdup were investigated.

试验结果表明，固含率轴向分布基本均匀，径向为"扁-陡曲线"分布。固含率随磁场强度和颗粒尺寸的增大而增大，随液体粘度和空塔液速的增大而减小。

Formosus in Cambodia and in other countries throughout its range.

此外 ，还迫切需要收集详细资料，分布，种群数量和面临的威胁红龙鱼在柬埔寨，和其他国家的整个范围。

The community is composed of 136 species belonging to 46 families and 73 genera.

群落结构特征方面的材料是研究它的分类、分布、演替和合理利用的方向所迫切需要的[2]。

Depression ; Gravimetry ; Debris flow ; Distribution

凹陷；重力流；泥石流；分布

Amazon River system and French Guiana.

分布 亚马逊河系统和法属圭亚那。

In contrast, the level of GRP94 was gradually increasing and exceeded the level of GRP78 at later fetal stages. Furthermore, the level of GRP78 was gradually decreasing from telencephalon to hindbrain on E16.5 but GRP94 was not.

在E16.5的不同脑区，GRP78的表达呈现出从端脑到后脑逐渐递减的"浓度梯度"分布，而CRP94在不同脑区中表达相同。

In order to solve in the distribution, isomerism and the dynamic Internet environment the digital library resource sharing, the semantic retrieval and the knowledge discovery difficult problem, designed the platform based on the grid Digital library knowledge, and the realization of the key technologies were discussed.

为解决广域、分布、异构和动态的Internet环境中数字图书馆资源共享、语义检索和知识发现的难题，设计了基于网格的数字图书馆知识服务平台，并对其实现的关键技术进行了讨论。

Objective In order to provide scientific basis for steady utilization, scientific exploit and the GAP planting, pass through survey the types and distribution of Smilax L.

目的调查我国菝葜属药用植物的种类、分布、生态环境和蕴藏量，为菝葜属药用植物的持续利用、合理开发及GAP种植提供科学依据。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。