在此中

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。

On this basis, we give the characterization of the compact set in E〓,τ

引入了模糊数网的最终等度左连续概念，利用它得到了模糊数序列在水平收敛意义下存在极限的一个充要条件，在此基础上给出了空间E〓，τ(l中紧集的特征刻画，即空间E〓，τ(l中的闭集U是紧的当且仅当U一致支集有界，且U的每个网有在（0，1上最终等度左连续、在λ=0处最终等度右连续的子网。

The body has 2 sections , the first of which reaches into the Christianity" s influence upon the transformation of Western Europe to feudal society : In the early middle ages Western Europe , Christianity together with the traditional ruling class , had reunified the political power of Roman empire with the help of "Divine Right to govern";In the meanwhile , it had contributed to the ethnic unity of the Roman races and the feudalization of Western Europe ; while the other section deals with the Christianity" s impact upon the transformation of Western Europe to capitalism : in the Late Middle Ages , Western Europe , with the emergence of cities , some social changes had taken place .

正文又分为两个部分：Ⅰ。基督教在西欧向封建社会转型中的作用：在西欧中世纪早期，基督教不仅为日尔曼人的统治提供了一套完备的思想理论体系，而且为孕育于两种不同背景下文化的融合搭起了桥梁，并在此基础上促成了西欧封建制的最终形成。Ⅱ。基督教在西欧向资本主义社会转型中的作用：中世纪后期，随着城市的兴起，西欧社会发生了一系列变化。

Secondly, enrichment of 13C and 15N and their combination with NMR spectroscopy can help us study not only the dynamics of decomposition of organic materials but also the changes of their chemical structures during the turnover of the organic materials, which can provide more information in clarifying the C and N cycling and humification of the organic materials applied to soils.

本文根据已收集到的部分资料，对13C标记技术在土壤和植物营养中的应用情况作一简要综述，并在此基础上讨论了13C加富标记技术在研究植物光合作用、光合产物的去向以及标记秸杆在土壤中的分解等方面的应用及其注意点，旨在能为国内开展这方面的工作提供十分有用的参考

Superintendent of the home: the birth of this Tom Fang Ting's northeast corner, a half a blue iron gate, lavender and lily swaying in the breeze --- Here is the superintendent's house --- the reality of Alice and her sisters live , At the entrance there is the famous chestnut tree, but trees in the smiling faces of cats, albeit not very clearly that it is only in fairy tales.

学监的家：诞生于此汤姆方庭的东北角，半掩着一扇蓝色的铁门，薰衣草和百合在微风中摇曳———这里就是学监的家———现实中的爱丽丝和她的姐妹生活的地方，门口有那棵著名的栗子树，不过树梢中那若隐若现的笑脸猫却是童话中才有。

The main study areas are as follows: 1 The landscape classification system of the urban-rural ecotone is set up based on the studying on land-use type of urban area and rural area, and then it is used to establish a regional landscape data warehouse for deposition, modification and management; 2 A group of landscape structure and pattern indices and patch area spectrum analysis methods are used to describe the structural and heterogeneous characters of all the landscape elements from different aspects; 3 The temporal and spatial difference of the landscape pattern of main road belts of the research area are also analyzed with the same method. Their basic process and regularity of urban axial expanding of the southwestward of Shanghai City are initially knewn well; 4 According to the traits of the ecotone, the principles and basis of vegetation classification, the ecotone vegetation classification system is set up, its species constitute, community patch characters, the relationship between vegetation types and landscape categories are analyzed, meanwhile, the vegetation sample maps are made; 5 Based on above studies, some landscape ecological stratedies within the research area were discussed. The following are the results of this study

城乡交错带地区的景观分类，在对城市地区和农村地区的土地利用类型研究的基础上建立了城乡交错带的分类体系，并在此基础上用ARC＼INFO软件分时段、分区、分要素建立研究区的景观图形数据库，对数据进行存储、修改和管理；2）利用多种景观结构、格局指数和斑块面积谱分析方法，从不同的侧面对各种景观组分的结构以及区域的景观格局特征进行了分析，并对其成因进行了探讨；3）利用相同的分析方法，分析了城乡交错带中的城市干道两侧的景观格局特征的空间和时间分异情况，初步掌握上海城市西南轴向扩张的基本过程和规律；4）对城乡交错带中非独立的景观要素-植被，研究其遥感图象信息的基本特征，建立适合区域特点的植被分类体系，并在样区中建立了植被图形数据库和计算机制图，分析了植被景观种类组成、斑块等级等特征以及与不同景观的相互关系；5）在上述研究的基础上，对研究区内的景观生态对策进行了研究。

Combining with the evolution of congestion control mechanisms, the existed technologies for congestion avoidance and recovery in IP networks are reviewed. The unsolved problems and hot spots in subdiscipline, such as TCP flow control, end to end flow control and enhanced mechanism in intermediate nodes, are summarized, and the advantages and disadvantages of all kinds of schemes for active queue management are emphatically analyzed. Also the paper presents and discusses the drawbacks of heuristic designin...

以拥塞控制机制演化的历史为线索，回顾了IP网络中已有的拥塞控制技术；总结了TCP流量控制、端到端流量控制和中间节点增强机制等各研究子方向中需要解决的问题；重点分析了主动队列管理这一热点领域中已有策略和算法的优缺点，并在此基础上，归纳和阐述了大多数算法所采用的启发式设计加仿真试验验证的模式存在的不足；提出了应用控制理论中的分析和设计方法研究网络拥塞控制的思路，并给出几个有意义的研究方向

According this, the thesis broadens the content of the Union of Nature and Man, and pointed that it should be built on full understand on nature and man, acknowledge nature"s inherent value, definite man"s responsibility to nature, then stress difference in unit and unit in difference. On the basis of it, the Union of Nature and Man world outlook is set up, which may be useful to transform Mans concept of environment and morality, and to promote perfect rules and international collaboration, and to set up right development view, and finally realize the harmony between nature and man.

据此，本文拓展了"天人合一"的内涵，明确指出"天人合一"思想应当建立在对自然界和人类自身的充分认识之上，承认自然的内在价值，肯定人对自然负有责任，在差别中强调合一，在合一中强调差别，并在此基础上，树立天人合一自然观，以从根本上改造人们的环境意识和道德观念，促进制度完善和国际协作，建立正确的发展观，最终实现人与自然的和谐共生。

In this investigation fragments of Acropora pulchra were used in a semiprotected nursery in southern Taiwan between 1996 and 1998 to test, in situ, the possible effects of different factors on the generation of new branches and the initial skeletal extension rates of transplants.

在调查研究的美丽轴孔珊瑚是以半保护的养殖牧场在1996年到1998年於南台湾做测试，在那里，有可能会影响移植片段中的新分叉生长和骨骼生长速率之不同因子；这些变因在此研究中有片段的来源及长度、它们新的定向、存在的组织伤害和片段的位置。

In this paper we use the expert-investigation method to distinguish the risks of the project and then we build a model and to use the analysis of hieratical processto evaluate the risks of the project. After this we get the weighs of every risk we distinguish and we also get the high, middle and low probability of the projects whole risk. And then we analyze the two important risks of the project, the market risk and the design risk, we also make out the methods to control the risks.

本文在对周公山楠水阁酒店工程的风险管理研究中，采用了专家调查法对咳项目所面临的风险进行识别，并建立了风险评估模型，在此基础上用层次分析法对各风险因素进行评估得出了各种风险因素所占的权重和整体工程项目的风险度大小，着重对市场风险和设计风险做了详细分析，在分析的基础上给出了相应的风险控制措施和方法，最后总结了在风险管理过程中的成绩及不足之处。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。