查询词典 periods

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。

Generally, Faure"s style had experiences three periods" refinement and sharpening.

总体来说，福列的音乐风格大致经历了三个时期的磨砺和提炼。

Like nose-picking and a preoccupation with feculence, the inability to sit still for long periods is a defining characteristic of childhood.

象不停地挖鼻子和玩弄废物以及不能够长时间静坐之类的行为是少儿时期的主要特征。

The topic of my speech today is: feel mapleleaf, involve with mapleleafWe have already came to mapleleaf for two months, during those periods, we had experienced military training, mapleleaf activities week and chorus competition, we experienced so much for ESL class process and excellent club activities. I also feel such honor to come to MapleleafSchool to study and experience wonderful life such as our teachers who always help us, encourage us and motive to us.we should thank our parents to create this good environment for us, thank school for providing those facilities, thank teachers for helping us and tutoring us with our study, also guide us in a proper way. Here, we want to thank all the people who help us with understanding, encouraging and supporting. On the 19th of October, when we see all of the students wear tidy and neat uniforms to present the flag ceremony, we feel so proud to be here. When we listen to our school songs, we feel so excited to be a mapleafer.

时光荏冉，来到枫叶高中男校区已经两个多月了，这期间，我们亲身经历了军训、枫叶体育活动周、合唱比赛、教师节的手语操，亲身体验了枫叶强化年级课程和丰富多彩的社团活动，亲身体会了能够来到枫叶学校读书是多么的荣幸，这里宽松的环境、多彩的生活、和蔼可亲的老师、乐善好施的学长们都给了我们极大的支持和鼓励，我们感恩父母给我们创造的环境、感谢学校为我们提供的设施、感谢老师在学习和生活上给我们的帮助和教导、感谢学长和同学们的理解、鼓励和支持，当10月19日看到全体学生身着整齐的正装参加升旗仪式时，我们心潮澎湃，听着那气势磅礴的国歌和校歌，我们激动万分，我们深深的感到，能在枫叶学校学习是我们的荣幸，我们为能有这样优质的教育而感到骄傲，我们为能在这样的一所国际化学校里学习而感到自豪！

Fictitious capital experienced four periods during its formation and development,investing loans, initial security investment, security capital investment and derivative,investment and developed step by step. The formation of the fictitious capital anddevelopment is not only the development of the fictionalization of the investment, butalso the multiple expansion of the investment. In this course, fictitious capitalsachieve its social value and became a social capital.

虚拟投资伴随着虚拟资本的形成和发展经历了投资性贷款——原生证券投资——证券化资产投资——金融衍生品投资四个阶段而逐渐发展起来，它的形成和发展过程是投资虚拟化不断发展和深化的过程，是虚拟资本倍乘式地扩张的过程，也是虚拟资本走向社会价值和社会资本的过程。

According to the material of field investigation and survey, tectonic erosion periods and their erosion are studied.

根据野外调查和实际测量资料，研究了黄土高原构造侵蚀期和期内造成的侵蚀。

This thesis expounds the origin and development of Chinese culture of filial piety at different periods and its cultural implications.

孝文化是一个复杂的文化现象，从不同的视角来审视可以得出不同的结论。

April showers,ie short periods of rain alternating with fine weather.

可以看出，"短"拦截，不适当的阻尼系数和高的"a"值都会发生振荡的响应曲线。

For babies who might be staying in the stroller for long periods of time, look for a five-point harness.

至于婴儿的人，可能留在婴儿长时间的时候，找了五点治理。

In this article, the history of Geng-Liao District is divided into three parts: The periods during the rules of Qing Dynasty, during the colonization of Japan, and after World War II to survey the related historical record. After this is a study of the affects of the Erchong Floodway toward the local education, religion, and way of life in Geng-Liao. The affects toward Geng-Liao Elementary School and the region around the old campus is shown by the structure and running of the school, the changes of temples: Fuan temple, Singjhen temple, Fusing temple, and Fude temple, and the development of Gengsin community and Singjhen community.

文中针对更寮的历史，区分为清领时期的更寮、日治时期的更寮、以及战后的更寮三个部份分别审视史料中有关更寮区域的记载，其后以更寮区域为标的，探究二重疏洪道的施建对更寮区域教育文化、民间信仰以及生活型态的影响；对二重疏洪道辟建后对更寮国小及旧校地周边发展，则分别从更寮国小、信仰中心：福安宫、兴珍宫、福兴宫、福德宫以及更新社区与兴珍社区的结构与运作与当地来陈述。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。