探索

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 New Year, faced with new challenges and opportunities, we will have full confidence and make efforts to build an efficient team to explore a set of characteristic modern enterprise system.

新的一年，面临新的挑战和机遇，我们将以十倍的信心和努力，打造出一个高效敬业、团结协作的团队，探索出一套有特色的现代化企业制度。

This paper intends to research Lin Yutang s art theory and evaluate its characteristic and value again.

本文试图对林语堂30年代的文艺思想进行探索研究，给其文艺思想的特性和价值进行重新评价。

This paper intends to research Lin Yutangs art theory and evaluate its characteristic and value again.

本文试图对林语堂30年代的文艺思想进行探索研究，给其文艺思想的特性和价值进行重新评价。

At the same time,this tragedy is also containing the exthemely rich cultural value: Lu Xun take himself as the reference, profound analyze himself, created Wei Lian-shu who has characteristical image; He thought the initiation person's destiny again and explored the outlet question of the intellectual in the 20 century, has the intense humanitarianism spirit.

同时，这一悲剧也蕴含着极其丰富的文化价值：鲁迅先生以自身为参照，深刻剖析，结合自己生命历程，创造出了独具特色的魏连殳形象，给当时的启蒙主义知识分子以警示；重新对启蒙主义者的命运进行再思考，探索了20世纪初中国知识分子的出路问题，体现出强烈的人道主义精神。

And that brings me to a characteristically humanistic way to relate a truth: by telling a story.

那把我带到探索真理的典型的人文科学方式上：讲故事。

The random system is reduced to its equivalent deterministic one by Chebyshev polynomial approximation, and the response of the stochastic system can be obtained by the deterministic methods.

首先用Chebyshev多项式逼近法将随机系统化成与其等价的确定性系统，然后通过等价确定性系统来探索随机Duffing-Van der pol系统的对称破裂分岔现象。

So it is of important significance for human health to explore a sort ofeffective treatments for cancers,to improve drug sensitivity for cancer cells and to reducenegative effects of chemotherapeutics.

因此，探索有效的肿瘤治疗方法、提高肿瘤对化疗药物的敏感性以及减小化疗药物的毒副作用，对保障人类健康具有重要的意义。

The main farmland soil types in Heilongjiang province are of white pulp soil, black soil, Chernozem, meadow soil. In this study, according the actual value of dry soil density, capacity soil moisture constant by weight, soil porosity with different soil in different vertical layers, applying statistical analysis method, to solve the internal relations among the three index above.

黑龙江省早作区耕地土壤主要类型有白浆土、黑土、黑钙土、草甸土，本项研究通过不同类型、不同层位土壤的比重、干容重、田间持水量、总孔隙率等的实测值，采用统计分析中回归分析方法，探索各项物理指标之间的内在关系。

Objective Explore the role of chigger mite in the transmission of hemorrhagic fever with renal syndrome.

目的 探索小盾纤恙螨在肾综合征出血热传播中的作用及传播疾病的关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。