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In "Chang'an Avenue", the original clear scene is smashed and changed into a flat wall which blocks our sight and interferes with our psychological needs of the depth of field when seeing photos. However, there is still a kind of flat visual form which makes the infinite depth transform into a limited flat. When facing the variegated image, we are made to find the reality so faraway and dim by the glint of the adjusted photo, the extremely clear marks and the deep hue which seems like the result of underexposure.

长安街》中，本来清晰可见的远景，在揉的过程中其客观存在被改变，演变成一堵平面的墙，封堵了人们的视线，打破了人们观看照片时对空间景深的心理需求，但又存在着一种平面的视觉形式，使无限的景深陡然变成了有限的平面，仿佛是曝光不足所导致的低沉色调与照片被处理后所带来的映衬着现实若隐若现的反光，以及清晰无二的皱痕，让人感觉在沧桑斑驳的平面前，现实是那么遥远与模糊。

Primarily, the thesis assays the condition of network framework, the network was divided into three levels in terms of network management in order to establish the distributed method ,and still pointing out the intention and denotation of studying the Topology Discovery.Next, the thesis analyzes SNMP protocol minutely, including its development, principle, and the Network Management system that established on the SNMP protocol. Have analysed MIB in detail and the application way of MIB in network management .The thesis also assays the ICMP protocol, describing its working principle and the format of datagram minutely , and describing two important tools of ICMP- Ping and TraceRoute in detail. On the base of upper analysis, the thesis expounds a kind of distributed Topology Discovery project, and book it in one autonomy system. Topology Discovery was divided into two levels in terms of network management, and analyses the way of linking up between the two level. The thesis minutely assays Router-Level Topology Discovery technology basing on SNMP and Subnet-Level Topology Discovery technology basing on ARP and ICMP. According to these analyses, the thesis explores the specific methodology and the technology of XML data object which using the WinSNMP API to achieve topology discovering system on the development platform of Visual C++, and also analyses the technology of topology analysis and topology graph minutely. Moreover, the thesis assays the technology of basic firewall and Topology Discovery response strategy. Finally, the thesis analyses the underlying blind problem of the topology finding, and also analyses the reason that the blind problem produced and the way that reduced. The distributed algorithm that this paper puts forward has a certain directive significance in wireless network or other fields.

本文首先分析了网络结构状况，将网络从网络管理的角度划分为三个层次，为分布式的方法奠定了基础，同时还指出拓扑发现研究的目的及意义；接着本文分析了SNMP协议，详细分析了SNMP协议的发展状况，协议的工作原理，以及由SNMP协议基础上建立的SNMP网络管理体系，详细分析了MIB，以及MIB在网络管理上的应用方式；本文又分析了ICMP协议，详细描述了ICMP的工作原理和数据报格式，并详细描述了ICMP的两个重要工具-Ping 和TraceRoute；然后本文在结合上述分析的基础上，提出了一种分布式的拓扑发现方案，将拓扑发现拟订在一个自治系统内，将拓扑发现从网络管理角度划分为路由器级和子网级两个层次，分析了两个层次之间的衔接方式，同时从拓扑地域的角度将拓扑发现过程分布化，分析了分布式算法的具体方法和分布式结点之间的数据通讯方法，本文详细分析了基于SNMP的路由器级拓扑发现技术和基于ARP和ICMP的子网级拓扑发现技术；根据这些分析，本文利用XML数据对象作为分布式算法中的数据对象，分析了XML的技术，本文使用Visual C++开发平台实现网络拓扑发现系统，详细分析了使用WinSNMP API实现基于SNMP的路由器级拓扑发现和基于ARP的子网级拓扑发现，分析了使用Winsock编程实现基于ICMP的子网级拓扑发现，本文还对拓扑分析和拓扑图的绘制技术作了较细致的分析；本文最后还分析了基本防火墙技术，分析了几种类型的防火墙对拓扑发现带来的影响，以及在拓扑发现时的应对策略，本文还分析了拓扑发现中可能产生的盲点问题，分析了盲点产生的原因以及拓扑发现中减少盲点的方法。

And therefore, though perhaps at first,(as shall be shewed more at large hereafter in the following part of this discourse) some one good and excellent man having got a pre-eminency amongst the rest, had this deference paid to his goodness and virtue, as to a kind of natural authority, that the chief rule, with arbitration of their differences, by a tacit consent devolved into his hands, without any other caution, but the assurance they had of his uprightness and wisdom; yet when time, giving authority, and sacredness of customs, which the negligent, and unforeseeing innocence of the first ages began, had brought in successors of another stamp, the people finding their properties not secure under the government, as then it was,(whereas government has no other end but the preservation of * property) could never be safe nor at rest, nor think themselves in civil society, till the legislature was placed in collective bodies of men, call them senate, parliament, or what you please.

所以，虽然最初可能，（在这个论题接下来的部分将更详细的说明）有一个道德良好的人，在其余的人中享有卓越的声望，大家尊重他的良善和美德，将他视为一种自然的权柄，从而将裁定他们之间的分歧的主要统治权，以一种默许的形式转交到他的手中，他们无须其它的警惕，仅仅是他们信任他的诚实正直和智慧；然而随着时间的推移，由于最初时代不曾在意和毫无预见的天真无知所开始的授权，以及习俗的神圣，也产生了另一种类型的继承者，这时人们发现他们处于这个政府之下的财产不再像以往那样安全，（然而除了保护财产政府没有其它的目的）于是，他们不再放心，也不再认为他们处于世俗社会之中，直到将立法权交给集合体——元老院，国会或诸如此类你想用的。

It is well known that knowledge has tremendous amount like the sea , but what you can learn is only a little bit as a drop in the bucket, what you have mastered and what you are studying, as well as both what you will learn in the future and what you should be study all your life are all limited, but if you have learned a kind of method of thinking, so you will prolong what you have studied unlimitedly.

广博的知识是浩如烟海的，而你所能学到的也只不过是沧海中的一粟，你掌握的和现在学的包括将来要学的和你一辈子学的知识都太有限了，可是如果你学到了一种解决问题的方法，那么就可以将你所学的东西无限延伸。。。。。。。。。。。。。。。

If i fall in love with a girl when i was youth ,i wil treat her tender whether we bath in love long or short....if we could treat softly for each other all the time .then all the time we get together is a kind of unspotted beauty....at the end ,we have to be far apart ,also to keep a thankful heart.being fine to say thank you,thank you for giving me a wonderful recall......

当我在我年轻的时候，如果我爱上了一个女生，我将会温柔的对待她，不管我们相爱的时刻是长或是短。。。。。若我们能够始终温柔的相对，那么所有的时刻都将是一种无暇的美丽。。。若不得不分离，也要心存感激，好好的讲一声多谢，多谢她给了我一份美好的回忆。。。。。。。。

The result was a kind of Liverpool, mon amour, a documemoir that used newsreels and home movies to create what Davies called a "valediction and an epitaph."

其结果是利物浦，我的爱，一部采用纪录片和家庭电影的形式来创造出戴维斯所称的"告别墓志铭"。

The dissertation considers that there is an inner relationship between various elements of e- ducology and a given culture, which produces"the culturalcharacter of educology". Educational problems have factual bases, but their nature should be considered as subjectivity, valuableness, and historicity, which distinguish educational problems from educational facts and related prob- lems of other disciplines. Besides having a logical feature of scientific concepts, the nature of edu- cational concepts should be considered as historicity, normativity, valuableness and expressivity. Educological activity is a kind of subjective activity. The subjects of educology are not only the subjects of knowledge, but also the subjects of value and practice. Educological works are products of their whole soul life, which embody their life and social ideals.

本文阐明，教育学活动的诸要素与一定的文化之间存在着内在的关联，具有文化特征，构成教育学的文化性格：教育问题有它客观的事实基础，但是教育问题的质是它的主观性、价值性、历史性，这是教育问题与教育事实以及相关学科问题的分界线；教育概念除了一般科学概念所具有的逻辑特性以外，在质上是一类历史性、规范性、价值性与表达性的概念；教育学活动是一种主体的活动，这种主体在活动中不仅是认识的主体，更是价值的主体和实践的主体，因此，教育学著作是他们整个心灵生活的结晶，体现着他们的人生和社会理想。

Beneath the story of a love affair, Titanic tells another story, that of a spoiled high-society girl with an identity crisis: she is confused, doesn't know what to do with herself, and DiCaprio, much more than just her love partner, is a kind of "vanishing mediator" whose function is to restore her sense of identity and purpose in life.

在表面的爱故事之下，《泰坦尼克》其实还有另一个故事，关于一个被宠坏的富家女的身份危机：她感到迷茫，不知如何是好；DiCaprio不只是她的情人，而是是一个"消失的中界"，其作用是恢复女主人公的身份认同和人生目标。

Applied with space vector diagram, a novel method for analyzing the control law and current controllability of variable structure control is proposed The detail discussions of parameter design, robustness and stability analysis are also made Furthermore, based on modeling the DC capacitor voltage control subsystem, a kind of fuzzy voltage controller is proposed, which results in good control performance In order to reduce the chattering of variable structure, a novel control scheme----fuzzy variable structure control is proposed in the fifth chapter.

针对变结构控制在应用中出现的抖振问题，本文第5章应用趋近率控制与模糊控制的有机结合，提出了模糊变结构控制策略，并应用空间矢量分析法揭示了其控制机理。

Baculovirus is a kind of double-stranded circle large DNA virus, which has been developed as an environment sound pesticide and a powerful vector of foreign protein expression, as well as a potential vector of gene therapy.

杆状病毒是一类大型环状双链DNA病毒，作为一种高效的生物杀虫剂、真核表达系统以及基因治疗载体的研究和应用，其分子生物学和侵染机制的研究也取得了很大进展。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。