自然科学

In the thesis, research on network vulnerability analysis and IP traceback is discussed.Under the background of "IP network topology and analysis of performance based on network detection" supported by NSFC, Distributed Network Measurement and Analysis Infrastructure, the cooperant result of our workgroup, is discussed, and also the significance of network vulnerability analysis and IP traceback research in DNMAI; Several existing advanced vulnerability analysis methods and models are compared and summarized. Advantages and disadvantages of each technique are discussed in detail.

论文以国家自然科学基金重点项目(基于网络探测的IP网络拓扑发现和性能分析)工作组提出的分布式网络测量和分析基础架构为背景，在网络脆弱性分析和反向追踪方面做了一些研究工作：说明了脆弱性分析和反向追踪研究在DNMAI架构中的意义和作用；对现有网络脆弱性分析领域的几种先进模型和技术进行分析、比较和综述，详细讨论了各种技术的优缺点。

Shock absorption and structure-liquid couping.as to be a part of the capital stock item of nature science, the article just contains some words and research about damping shock absorption and structure-liquid couping these only two sides, and we have explained for the insufficient in the last part also we point out that we need to do the research wilder and deep in the future.

涉及到隔震、减振、流固相互作用等多方面，作为国家自然科学基金项目研究的一部分，本文只针对渡槽结构控制中的阻尼器减振以及流固耦合两个方面作了一定的研究，在最后一章的论文总结当中，我们对一些不足之处进行了说明，并且指出了接下来的研究工作需要在广度和深度上进行进一步研究的地方。

Human beings have acquired illustrious accomplishments in many fields of natural science through millennia evolution of human civilization, but there has been many ill-defined enigmas in biology, a vital subject involved the secrets of human beings selves, in which one of the most interesting questions is that how the polymer as DNA and RNA moves in confined environments.

人类文明经过几千年的演化发展，在自然科学的诸多领域都取得了辉煌的成就，但是涉及到人类自身奥秘的学科——生物学，却有许多未解之谜，因此它也成为当今最有活力的学科之一，其中最引人注目的一个问题就是DNA，RNA等分子在细胞中的动力学行为。

As a newly emerging subject, bioinformatics has become one of the forefronts of natural science.

生物信息学作为一门新兴的学科，已成为这个世纪自然科学的前沿领域之一。

The base of this point is that firstly, math has become the base of natural science, social science and behavioural science, and the content, ideology and other elements of math have been widespreadly applied to our social life; secondly, math plays a key role in improving the scientific and cultural qualities of a nation because it not only provided us with applying technology but also gibes people capability; thirdly, one of the weak line in math education is the cultivation of the ability of self-supervision and self-control.

另一方面，数学教育应着眼于人的文化素质教育已成为人们对数学教育认识的一个新变化点。这一点是基于：1、数学已成为自然科学、社会科学和行为科学的基础，数学的内容、思想等在人类社会生活中已经得到广泛的应用；2、数学在提高一个民族的科学和文化素质上起着非常关键的作用，他不仅给予应用技术，而且也给人以能力。

Many people who work in the natural sciences are idealists in their world outlook.

搞自然科学的许多人，世界观是唯心论的。

Buried pipeline response to nearby deep excavation in soft soil is a vital project, which is imbursed by national science fund. Based on the former study, the coupled action of retaining structure, soil and pipeline is firstly considered in this paper.

深基坑开挖工程对邻近地下管线的影响规律研究，是基坑环境工程中的重要课题，也是国家自然科学基金资助重点项目&受施工扰动影响的土体、环境稳定理论和控制方法&的主要研究内容之一。

This research was imbursed by a National Natural Science Fund project titled Integration And Systematization Of Mathematic Models For Soil And Water Resources Study In A Basin And Its Application. This study established a base for the share of geography information and it also possessed an important significance for the lately geography process quantificational study and its models improvement and integration.

该研究在国家自然科学基金项目&流域土壤与水资源模拟模型的集成和系统化及其应用&资助下完成，其成果将为地学信息共享奠定了一定的基础，对今后地理过程定量化研究以及模型的改进、集成有重要意义。

To conquer limitations of existing techniques for developing loop invariants, professor Xue Jinyun, who is imbursed under two National Nature Science Foundation of China, systematically research the theory and method of loop invariants and advanced the new definition and developing strategies for loop invariants. Based on above, he presented efficiency method of developing algorithmic program, Partition-and-Recur Approach, and its developing environment which bring into important play in formal method.

为了克服已有循环不变式开发技术存在的局限性，薛锦云教授在两个国家自然科学基金课题&若干新的算法程序设计和证明方法研究&和&实用的软件形式化方法及其开发工具的研究&的资助下，对循环不变式的理论和方法进行了系统的研究，提出了关于循环不变式的新定义和新的开发策略，并在此基础上形成了一种实用的算法程序形式化开发方法及其开发环境，在复杂算法程序及软件形式化开发中发挥了重要作用。

The subject is the sequential reseach of the item of theory and experimentation reseach of hybrid-integrated optical acceleration seismic geophone (No. 49874031) and the item of theory and experimentation reseach of photoelectricity integrated acceleration seismic geophone imbursed (No. 40274047) by naitional neature science fund.

本文研究是国家自然科学基金资助项目&混合型集成光学加速度地震检波器理论与实验研究&(No.49874031)和&光电集成加速度地震检波技术理论与实验研究&(No.40274047)的后期研究课题，旨在将研究成功的各类干涉型光电集成加速度地震检波器推广应用。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。