查询词典 Lorenz

Generalized Lorenz system contains the classical Lorenz system and infinite chaotic systems which are similar in structure but not topologically equivalent with Lorenz system.

广义Lorenz系统包括经典Lorenz系统和无穷多个结构相似但不拓扑等价的混沌系统。

At the same time, we introduce a unified chaotic system with single parameter,called Lorenz system families, which contains the Lorenz and the Chen systems as two dualsystems at the two extremes of its parameter spectrum, and acritical system as a transitionsystem.

同时，提出了一个单参数的统一混沌系统--Lorenz系统族，它包含Lorenz系统和Chen系统作为参数区间的两个极端系统，临界系统作为一个过渡系统。

The major results are summarized as follows: When there is initial error only or model parameter error only in the Lorenz system, the error growth and predictability limit are comparable between two kinds of error problems. This result holds basically for the wide range of parameter space of Lorenz system.

结果表明：在初始误差和参数误差单独存在时，系统的可预报期限随误差大小的变化规律基本上相同；对于相同的误差大小，初始误差和参数误差对系统可预报期限的影响几乎相同，这一结果基本上不随参数范围的变化而变化。

Since the E.N.Lorenz established the system of Lorenz in 1963, the people havealready done a lot of work on this system.

自从 1963 年 E.N.Lorenz 创立了 Lorenz 系统以来，至今人们已经对这个系统进行了大量而深入的研究。

absolute term can substitute for square term for nonlinear action, when the square term in lorenz-like system proposed by liu is replaced by absolute term, a new hyperchaotic system containing absolute term can be constructed by using proper feedback control method.

绝对值项的非线性化作用往往可以代替平方项，liu等人提出的类lorenz系统中平方项用绝对值代替，并利用合适的反馈控制手段，可以构造一种新的含有绝对值项的超混沌系统。

Compare Lorenz's view of learning, or, if you prefer, one part of his view of learning, with that of a behaviorist such as B.

比较Lorenz的学习观点，或者，如果你也可以比较他的一部分学习观点与一个行为学家如B.F。

The system structure of generalized Lorenz canonical form is reconstructed based on T-S model.

针对广义Lorenz规范式结构，基于T-S模型进行了系统的模糊重构；利用Lyapunov稳定性理论和反馈同步的思想实现了重构系统的同步，并推导了误差系统以衰减率α实现全局渐近稳定的充分条件。

Typically, capitellar fractures are divided into 3groups3,21: type 1, the Hahn-Steinthal fracture, is characterized by a single, large capitellar fragment; type 2, the Kocher-Lorenz or Mouchet fracture, involves the articular cartilage and a thin layer of subchondral bone; type 3 was originally described by Broberg and Morrey and characterizes a comminuted or compression fracture of the capitellum.

肱骨小头骨折可典型地分为3种：1，Hahn-Steinthal骨折，特点为单个、大块小头骨折片；2，Kocher-Lorenz 或 Mouchet骨折，涉及到软骨和软骨下骨骨折；3，此类骨折最初为Broberg和Morrey所描述，特点为肱骨小头粉碎性或压缩性骨折。

Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.

本文在混沌理论研究成果的基础上，对混沌信号的产生做了详细的分析，涵盖以下内容：首先介绍了混沌的定义，混沌信号的基本特性和各种判别方法，特别是对简单的一维Logistic映射的硬件实现问题做了初步探索；其次对混沌信号的产生方法进行讨论，借助于MATLAB、PSPICE、EWB等仿真软件，对几种混沌电路输出的混沌信号进行了分析比较，并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究，通过混沌电路调试，深入研究电路中各元器件，特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响；再次研究连续混沌系统的数字化硬件产生，设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案，在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点；最后针对不同混沌系统，采取不同算法，提取混沌特性参数Lyapunov指数，进而对不同的混沌信号发生器的性能进行了分析。

In the first part, an ideal non-noise spatio-temporal series (33 modes Lorenz system) is used as a generator for chaotic spatio-temporal series in comparison and sensitive tests with the field time series analysis method.

在第一部分中，以一个"理想"的混沌时空序列即33模Lorenz系统，作为时空混沌序列的"发生器"，通过状态空间重构，利用场时间序列的局域近似方法建立预测模型，进行对比试验和敏感性试验。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。