结构

The high-resolution crystal structure of TIPE2 reveals a previously uncharacterized fold that is different from the predicted fold of a death effector domain.

清华大学施一公的研究小组对TIPE2的晶体结构进行了分析，发现其真实的蛋白折叠结构与先前用软件预测的折叠结构有出入，尤其是该蛋白的死亡效应区域结构。

By mean tests of microstructure test under uniaxial compression, the image sequences of red sandstones' microstructure were continuously gathered and the quantitative parameters were extracted; then the microstructural evolvement of red sandstones under uniaxal compression has been analyzed.

通过单轴压缩微细结构试验，采集红砂岩的微细结构图像系列，提取微细结构量化参数，对不同风化程度红砂岩在单轴压缩条件下微细结构的演化规律进行分析。

Firstly, the spatial model of the structrue was established by ETABS. By multiple adjustment works and multiple calculations, the scheme of unidirection slant column subjected the giant floor load was denied. Finally the herringbone bracing structure scheme was adopted.

首先利用ETABS软件建立该结构的空间分析模型，通过多次结构方案调整和计算分析，否定了上部承受巨大楼层荷载的单向斜柱结构的可行性，最终采用了人字形支撑的结构方案。

In this paper,a new variable structure robust model reference adaptive control scheme is proposed,which deals with a class of SISO plants under parameter and unmodelled dynamical uncertainties.It is shown that even with the existence of unmodelled dynamics,the output tracking error will converge to zero in finite time, and the SPRcondition for reference model is not required.

摘 要 讨论了含结构不确定SISO系统的变结构模型参考鲁棒自适应控制问题，提出了一种新的变结构控制方法，使得：1系统在同时含参数及结构不确定性时，跟踪误差仍能在有限时间内收敛到零；2无须假设参考模型为SPR函数。

Analysis result shows that the dynamic interaction between wheel and rail and the rail-pad force of the strengthened track are little bigger than those of the unstrengthened track,the safety grades of the tracks are same,the strengthened track can benefit to decrease the displacements of all components of track structure obviously,to restrain the deformation of track effectively,and to reinforce the stability of railway,especially the lateral displacement and the gauge enlargement of the strengthened rail are about 33% of original rail.

分析结果表明：强化后轨道结构的轮轨动态相互作用力及轨枕支点压力均较强化前的相应值略大，但皆属相同安全合格等级；强化轨道结构位移大幅度降低，有效抑制轨道结构变形，增强线路稳定性，尤其是钢轨横向位移和轨距动态扩大量较强化前下降十分显著，前者仅约为后者的1/3左右；强化轨道也有利于降低轨下结构振动和减轻列车提速后对轨下基础的破坏。

It is considered that the Tertiary unconformity in Jiyang Depression can be divided into three types: typeⅠ1, typeⅠ2 and typeⅡ. Unconformity generally consists of weathered clay, semi-weathered rock and unweathered rock.

研究认为济阳坳陷第三系不整合可划分为三类：Ⅰ1型结构、Ⅰ2型结构和Ⅱ型结构，完整的不整合结构包括风化粘土层、半风化岩石、未风化岩石。

ISO 10303, is issued by international standardization organization, and here, this paper gives the definition of product structure model oriented part41 and part44 in STEP and content of product structure management in PDM. This paper also presents method of creating and extracting product information on engineering draught and product data exchange and integration between CAD system and database manager system. Moreover, the paper gives a method of organization and manager of data base on product structure.

论文中依据国际标准化组织颁发的STEP标准即ISO 10303中的Part41，Part44两部分内容以及PDM中有关产品结构管理方面的功能含义定义了产品结构模型，实现了工程图样中产品管理信息的建立和提取以及数据库系统与图形文件中的管理信息交换与集成，并以产品结构为核心组织和管理产品结构模型数据。

After happening in a certain degree, the structure damage will have a bad effect on the load capacity and durability greatly or even cause the serious accidents. Thus, it caused not only the significant casualties and economic losses but also a very bad social influence.

水工结构在实际运营中，由于设计、施工等先天缺陷或者使用载荷超出设计以及遭受强大的突加外在荷载的作用会使结构物出现不同程度的损伤，结构发生损伤以后将严重影响结构的承载力及耐久性，甚至会发生严重的工程事故，不仅造成重大的人员伤亡和经济损失，而且还会产生极坏的社会影响。

Based on this foundation, when structure theory gains breakthrough with the help of computer, the image of contemporary steel structure architecture takes on a current of diversity. Design aims at not only the magnificent and the renovation of structure, but also how to combine steel and form, and at the same time, embody the rational form art which string along with the logic of material and structure.

在这样的历史积淀下，在结构理论获得计算机帮助并迅速取得突破的情况下，当代钢结构建筑的面貌够呈现出多元化的发展趋势；设计追求的目标也不再仅仅是结构的宏伟与革新，而是转向将钢材作为一种表现元素与造型设计相结合，体现出一种忠实于材料与结构逻辑的理性造型艺术。

For preparing for the researches of text digital watermarking and advantaging other researchers" development when using the Chinese mathematical expression theory, this paper designs and realizes a development platform of Chinese mathematical expression. It has been proved by experiments that the platform"s function, execution speed and stability can satisfy the requirements of conversion and operation of enormous data.This research found out that the structure information of Chinese have plenty redundant information that can be used by the Chinese mathematical expression for the digital watermarking, the data embedded can possess better robustness. Based on this finding, this paper designs a kind of text digital watermarking method of embedding watermarking by using Chinese structure, and realizes the method by using the Chinese mathematical expression platform.Considering the watermarking embedding algorithms importance to the robustness of the text digital watermarking, this paper makes fully use of the advantage of the Chinese mathematical expression theory to design a kind of layered text method, which has being realized by using the Chinese mathematical expression platform. The layered text method can handle the text as a solid structure, and the embedding data havepreferable robustness.Finally, based on the researches of the text digital watermarking method and the text layered method, this paper integrates the method of making use of the Chinese structure embedding watermarking with the robust algorithm based on text layered, and realizes a brand-new text digital watermarking method. Proved by lots of experiments, this brand-new method has good robustness and better invisibility.

为了为研究工作做准备和方便其他使用汉字数学表达式理论体系的人进行开发，本文基于汉字数学表达式理论设计实现了一个汉字数学表达式平台，实现了Unicode汉字集中的汉字、汉字数学表达式、汉字的Unicode码之间的相互转化、依据汉字数学表达式提取汉字的结构信息、由汉字数学表达式在非中文平台上不依赖字库显示汉字的图像等功能，使用复合文档技术和流压缩技术进行数据的存储，使用对汉字数学表达式进行二叉树拆分来处理汉字数学表达式中包含的信息，使用自定义哈希函数来提高运行速度，实验证明，该平台功能、速度和稳定性完全能满足大量数据的转化和运算要求；通过研究表明汉字的结构信息中存在大量可使用汉字数学表达式理论加以利用的水印加载空间，加载在该空间的数据可以具有较好的鲁棒性，基于此，本文设计了一种利用汉字结构加载水印的文本数字水印方法，并使用汉字数学表达式平台将其实现；由于水印嵌入算法对于文本数字水印的鲁棒性至关重要，本文充分利用汉字数学表达式理论的优点，设计了一种文本分层的方法，并使用汉字数学表达式平台将其实现，使文本成为一个立体的空间，使嵌入在其中的数据具有更好的鲁棒性；最后在基于汉字数学表达式的文本数字水印嵌入方法的研究和基于汉字数学表达式的文本分层方法的研究的基础上，结合利用汉字结构嵌入水印的方法和基于文本分层的抗攻击文本水印嵌入算法实现了一种全新的文本数字水印方法，经实验证明，该方法有良好的鲁棒性和较好的隐蔽性。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新