查询词典 be characteristic of

The characteristic exponent based on a probabilistic dynamical system is calculated, which provides some useful information on unstable periodic orbits of the chaotic economic dynamical system. An effective controlling parameter is chosen by discussing the sign of the characteristic exponent. Furthermore, the control regions of the parameter variable are proposed. Therefore the controllable domain of chaos in the chaotic economic model can be obtained.

提出一种等价关系，计算基于概率的动力系统的特征指数，给出混沌经济动力系统的不稳定周期轨道的有用信息，通过讨论特征指数的符号，选择有效的控制参数，得到相应的控制参数取值范围，从而得到混沌经济模型中的参数变量的混沌控制域。

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。

This article introduces that the principle and technical characteristic of infrared camera cutting to length,describes its functional characteristic,advantage and application in practice.

文章阐述了红外摄像定尺切割的原理和技术特点，并对它的功能特性和优点以及该技术在实际中的应用作了详尽的介绍。

This paper discusses the index of load characteristic, and analyses the factors that affect load characteristic. Also, a method that forecasting the day load curve has been cited.

本文探讨了负荷特性的指标体系，分析了影响负荷特性的因素并借助一个简单方法对辽宁省日负荷曲线进行预测。

The empirical study on seven main indexes in China stock market shows the PDFA method can be used to reveal the phenomena that the lasting characteristic of stock index will change with time, and is also useful for us to compare the similarity of lasting characteristic between different indexes.

对我国证券市场的七个主要指数的实证研究结果表明，本文提出的逐段非趋势波动分析方法能够有效揭示股票指数持久性特征随时间变化的现象，也有助于更深入的比较不同指数间持久性特征的相似程度。

To characteristic line as the center, characteristic line farther away from land distribution affected by the characteristics of the smaller lines.

以特征线为中心，特征线远离受影响的土地分配的特点，规模较小的线路。

By the finite element simulation to Qingchuan Bridge dynamic characteristic, the thesis discusses manifold factors which influence the dynamic characteristic of half-through concrete filled steel tubular arch bridge, and gets some conclusions.

本文通过对晴川桥的动力特性进行有限元模拟，论述了影响下承式钢管混凝土拱桥动力特性的多种因素，并得出了一些结论。

It avoided the complicated number calculation of the characteristic matrix method ,and can get with the result with the characteristic matrix method homology.

它避免了常用的特征矩阵法中对反射率复杂的数值计算，并能得到与特征矩阵法相同的结果。

The algorithm applied the characteristic of the small second item's degree of irreducible polynomial in characteristic 2 finite field.

该算法利用了特征为2的有限域中的不可约多项式第二项次数较小的特点。

Traditional ways of characteristic extraction often choose a certain number of the best character by intuition, physical meaning of characteristic root or predecessor's experience .

传统的特征选取方法，很多情况下都是凭直觉、特征值的物理意义或前人的经验来选出若干最好的特征，而本文采用解析的方法来指(来源：A2c1cBc1C论文网www.abclunwen.com)导特征的选取，更具有说服力。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。