查询词典 generator double current

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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。

We construct the generator of gauge transformation and the generator of BRST transformation, then we obtain gauge transformation and BRST transformation of component fields, we find certain relations between the BRST generator and the gauge generator.

我们构造了体系的规范生成元和BRST生成元，分别得到了场量的规范变换和BRST变换，发现超对称不同场的BRST变换与规范变换存在一定的关系。

Our company mainly manufacture and sale of diesel generator sets, power generator sets for the 3-2000KW, land diesel power generator sets for 3-2500KW, mobile power station for 24-300KW, marine emergency diesel generator sets and a variety of 24-500KW diesel generating imports Series unit.

我公司主要制造销售柴油发电机组，发电机组功率为3-2000KW，陆用柴油发电机组功率为3-2500KW，移动电站为24-300KW，船用应急柴油发电机组24-500KW以及各种进口系列柴油发电机组。

In the last chapter, on the basis of theories in paper [4, 5], the notions of strong mixing, weak mixing, generator and expansion of the variable-parametric dynamical system are introduced, it turns out that in variable-parametric dynamical system strong mixing implies weak mixing and then implies transitivity; it is proved that if and both are variable-parametric dynamical system, F conjugates with G , the members of F are communicate with each other and the members of G are also communicate with each other, what's more, they are both homeomorphism, then F is strong mixing implies G has the same properties; futhermore, we prove that F is strong mixing implies F Devaney chaos in the sense of modification in variable-parametric dynamical system and that F Devaney chaos in the sense of modification if and only if G Devaney chaos in the sense of modification when semi-conjugate with and they both are communicate and homeomorphism; at last, we illustrate that F has generator if and only if it has weak generator, and we also prove that if F is expansion, then F has generator.

在第三章中，我们在文[4，5]的基础上，提出了变参数动力系统拓扑强混合、拓扑弱混合以及变参数动力系统的生成子、扩张的概念；证明了变参数动力系统拓扑强混合蕴含拓扑弱混合，进而蕴含拓扑传递；证明了：如果，为两个变参数动力系统，F与G拓扑半共轭，且F两两可交换，G两两可交换，它们均为同胚映射，那么F拓扑强混合，则G也有同样的性质；本章还证明了变参数动力系统拓扑强混合蕴含F在修改的意义下Devaney混沌；在此基础上得出了：如果变参数动力系统与变参数动力系统拓扑半共轭，它们都两两可交换，并且它们均为同胚映射，那么F在修改的意义下Devaney混沌当且仅当G在修改的意义下Devaney混沌；得出了F有生成子当且仅当F有弱生成子；如果F是扩张的，则F有生成子。

The seismic qualification for a diesel-generator assembly was performed in analytical way and a finite element model of the diesel-generator assembly including the diesel engine, generator, gear increaser and common under-frame was built. The strength of each component was checked in accordance with the corresponding 1andards and codes and the structure integrity of die diesel-generator assembly under seismic loads was evaluated.

本文采用分析方法对抗震Ⅰ类设备柴油发电机组进行抗震鉴定，对包括柴油机、发电机、齿轮箱和公共底架在内的柴油发电机组建立有限元模型进行抗震分析，并根据相关规范和标准对柴油发电机组各部件进行应力评定和强度校核，对柴油发电机组在地震载荷下的结构完整性作出评定。

On the analysis foundation for the at the same time generator control law of permanent magnetisms have discussed the at the same time generator word of permanent magnetism of niter quantity to melt the function of every control son modular in control system and the specific ay of realizing, have put forward a set of at the same time generator word of permanent magnetism of entire quantity to melt the specific enforcement of control scheme, and according to this set of scheme having established the synchronous generator of permanent magnetism based on Simulink the word of entire quantity melts to control emulation model, for the control made scheme emulate to analyses.

在对永磁同步电机控制规律的分析基础之上，讨论了永磁同步电机全数字化控制系统中各个控制子模块的功能和具体的实现方式，提出了一套永磁同步电机全数字化控制的具体实施方案，并根据这套方案建立了基于 Simulink的永磁同步电机全数字化控制仿真模型，对所出的控制方案进行了仿真分析。

Firstly, the meaning of dynamic analysis on the steam turbine-generator set foundation is pointed out. Review and comment on the present research on dynamic analysis of domestic and international steam turbine-generator sets are presented Then a dynamic calculating model of the framed foundation of the steam turbine-generator set is set up based on finite element theory. Then dynamic analysis methods are put forward based on dynamics theory. The dynamic design of the foundation of the specific 12,000KW steam turbine-generator set is carried out.

论文首先指出汽轮发电机组基础动力分析的意义，并对国内外汽轮发电机组基础动力分析的研究现状进行了回顾及评述；其后，利用有限元原理建立了汽轮发电机组框架式基础的动力计算模型，根据动力学理论对该模型提出了自由振动分析和动力响应分析的方法，针对某工程12000KW汽轮发电机组的动力基础进行了动力设计。

For the purpose of this insurance a Steam Turbine Generator shall comprise the steam turbine and generator complete including exciter and generator cooling plant but not beyond the limits of the inlet steam stop-valve generator terminals or condenser steam inlet point.

为了本保险合同目的，一个蒸汽涡轮发电机包括蒸汽涡轮机、发电机，其中发电机包含励磁机和发电机制冷设备，但该机组以蒸汽进口截止阀、发电机接线柱或蒸汽冷凝器入口点为限。

Design random number generators with good independence and good uniformity is the key in reliability parallel simulation. Four algorithms of parallel random number generators are introduced. They are segmented parallel algorithm and leapfrog parallel algorithm of multiplicative congruential generator and generalized feedback shift register generator, parallel algorithm of lagged Fibonacci generator, and parallel algorithm of combined generator.

可靠性并行仿真的关键问题是设计独立性、均匀性良好的并行伪随机数序列，本文给出了基于分段并行算法和跳跃式并行算法的乘同余发生器、GFSR发生器和延迟Fibonacci发生器、组合发生器等的并行算法，组合发生器能够产生周期为2.3×10〓的伪随机数序列，且品质良好。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。