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In chapter 1, Structure characters, classifications and the correlation between wavelength and structure of cyanine dyes were firstly summarized.

第一章为绪论，首先介绍了菁染料的结构特点、分类以及结构与光谱波长的关系。

Firstly, this is not a normal cycle.

首先，这并非一个正常的周期。

This study consists of three parts. Firstly the equivalently accelerative corrosive environment is determined through the analysis of statistic data of corrosion environment. Secondly the fatigue test is carried out under the constant amplitude cyclic loading for the specimens which are exposed in the corrosive environment for equivalent calendar time of zero year, 3 years, 8 years and 13 years. Four S-N curves with different corrosive time are obtained based on the fatigue experiment. Finally the regression method of S-N curves for experimental data is researched and a weighted least square fit is put forward in which the weigh of a group of test data is inversely proportional to the length of the confidence interval.

进行了以下几个方面的工作：(1)通过实测、统计、分析得到了当量加速环境谱；(2)完成了在当量加速环境谱下预腐蚀日历年限0年、3年、8年和13年的腐蚀试验，并进行了成组常幅疲劳试验，得到了不同预腐蚀年限下的S-N曲线；(3)进行预腐蚀后的S-N曲线的数据拟合方法的研究，提出了考虑置信区间长度影响的加权最小二乘法。

ECC system makes use of the finite group of elliptic curve on the finite field instead of finite cyclic group used in the discrete logarithm problem. The theory of ECC is being studied a lot and it is the focus of the cryptography and the industrial estate, especially the technique of the implementation of ECC.In this thesis, the meaning of the information technology is discussed firstly, then we analyze the classical cryptography algoritham. After that, the mathematics base of elliptic curve cryptosytems are introduced, especially the theory of the finite field. As for some algorithms, we also give out the program of reliazation.

随后，介绍了研究椭圆曲线密码系统所需要的数学理论基础，特别是有限域中的椭圆曲线理论，并对相关的方法给出相应的实例及其程序实现；论文第三章讨论给出了椭圆曲线密码体制的研究现状，综述了椭圆曲线与现有一些密码算法的结合，介绍了椭圆曲线的离散对数问题以及椭圆曲线面临的攻击，详细描述了椭圆曲线密码系统的实现细节及各个部分的实验数据。

Firstly expound the structure of the OFDM system, then analysis the working principle of OFDM communication and research into the key technologies in OFDM system: string conversion, sub-carrier modulation and demodulation, inverse Discrete Fourier Transformation, Discrete Fourier Transformation, cyclic prefix Insert, etc.

该文首先阐述了OFDM系统的结构，分析了OFDM通信系统的工作原理，研究了OFDM系统实现过程中串并转换、子载波调制解调、离散逆傅里叶变换、离散傅里叶变换、循环前缀插入等关键技术。

Work in this paper focuses on the data mining from chromatographic retention index data. A retention index database that contains about 50000 records of retention index is firstly established. Projection pursuit technique is then utilized to do data mining upon the data in order to find out some valuable information about the relationship between the retention indices and structural descriptors. A novel algorithm for projection pursuit is developed in this work. Samples of alkane, alkene and cycloalkane are investigated.

中文题名化学数据挖掘新算法和定量构性关系基础研究副题名外文题名 New methodology in chemical data mining and foundational research on QSPR 论文作者杜一平导师梁逸曾学科专业分析化学研究领域\研究方向化学计量学学位级别博士学位授予单位湖南大学学位授予日期2002 论文页码总数115页关键词定量构性关系化学计量学数据挖掘馆藏号BSLW /2003 /O6 /2 化学数据挖掘正逐渐引起化学家们的关注。

In experiment firstly used unsupervised classification to remote sensing image, made progress of manual work interpreted to make certain their attributes, then transformed their outcome to the file of classification cyclostyle, and then carried out supervised classification, it indicated that the classification precision of Poyang Lake wetland was improved through these means.

在监督分类中，采用了不同波段组合方式、主成分分析等手段，经过基于误差矩阵的精度评价分析表明，这些手段可以提高鄱阳湖湿地遥感影像分类的精度。

Firstly the principles and implementary steps of the MPSTD algorithm based on polar and cylindrical coordinates are put forward.

系统、全面地分析总结了MPSTD算法的计算流程和各项关键技术，对各项关键技术的优缺点进行了分析和比较。2。

The author studied firstly, systemtically and roundly on the membrane molecular biology of Cysticercus cellulosae during development, and put forward the biomembrane system, chemical compose, the process of phosphorus metabolism and biomembrane characteristic, and their changes during development.

首次对猪囊尾蚴膜分子生物学进行了较系统全面的研究，提出了猪囊尾蚴的生物膜系统、生物膜化学组成、膜磷脂代谢的途径及其生物膜特性以及发育过程中的变化。

The lipid, polysaccharide and protein existed on the surface of T. f. were demonstrated firstly by electronic microscope cytochemistry.

采用电镜细胞化学方法证实了T.f表面存在的脂类，多糖及蛋白质等物质。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。