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This paper will introduce the polynomial greatest common divisor comprehensively and combine its basic characteristics with matrix decomposition and line transformation, and then use it to solve some related problems.

并把多项式最大公因式的性质与线性变换，矩阵分解相结合，解决一些相关的问题。

By summarizing theorical analysis and application, it is validated that the proposed approach of the extensible elementary linear graph made some achievements in multidisciplinary composable simulation. And then the modelling range was enlarged, and the simulating efficient was improved. So the effective method and tool were provided for simulating multidisciplinary system.

理论分析和应用研表明，本文提出的基于可扩展单元线性图模型的复合建模方法在多领域统一建模理论上取得了一些进展，扩展了应用范围，提高了建模效率，为复杂的多领域系统整体性能仿真提供了有效的建模方法和工具。

Chapter 1 briefs the relation between invariance and computer vision and summarizes the research and application of invariance in computer vision. Chapter 2 first derives the transformations of three camera models, then makes the correpondences between the models and three typical geometrical transformation groups by analysing the transformations respectively. The correspondences supply the theoretical basis for applying geometrical invariants to resolve the problems of computer vision. In Chapter 3, we describe the geometrical invariant theory and prove some geometrical invariants of coplanar points, lines or conics by algebraic method. In order to use the invariants of conic pairs to describe general 2D shapes, we discuss the perspectively invariant representation of planar curves using conies in detail. A system consisted of two TMS320C25 and based on moment invariants is introduced in Chapter 5. The system can recognize more than 30 different shapes of object model or more than 10 plane models with similar shape in real time.

第一章简述了不变性与计算机视觉的关系，以及计算机视觉中的不变性研究和应用概况；第二章推导了计算机视觉中常用三种投影模型的变换关系，通过对这三种变换关系的分析，分别建立了这三种投影模型和几何学中的三种变换群之间的一一对应关系，为几何不变性在计算机视觉中的应用提供了理论基础；在第三章中，我们介绍了几何不变性的理论，并且用代数方法证明了共面点、直线、二次曲线的几何不变量和射影不变量；为了把二次曲线的不变量用于一般二维形状描述，在第四章中我们详细地讨论了用二次曲线实现一般平面曲线的透视不变性表示的方法；第五章介绍了用两片TMS320C25构成的、基于不变矩形特征的运动目标实时识别系统。

In order to stabilize and recycle municipal solid waste incineration fly ashes,chemicaltabilization with copperas as agent was firstly applied and then the treated fly ash was solidified by mixing with cement,the resulted concrete blocks are save and strong enough to be used in some special cases.

为实现垃圾焚烧飞灰的无害化和资源化，先将绿矾溶液与飞灰混合后氧化稳定飞灰中的重金属，然后将处理后的飞灰与水泥混合、养护，使焚烧飞灰在双重稳定化的同时，得到的水泥砌块浸出浓度低，具有相当的强度，可以在特殊场合安全利用。

With the crop marks created in Photoshop, I produced a template within After Effects that takes a video as input, and through some expressions I wrote, seperates and numbers each frame to a specific quadrant on the 4×6 print, and then outputs a sequence of JPGs.

与作物马克创造了在Photoshop中，我产生了模板后的影响，采取视频输入，并通过一些表达我写的，分隔和人数每帧一个特定的象限对4× 6打印，然后输出一个序列对jpgs 。

After introducing and analyzing the general value of Amicus Curiae and negative appraisement toward it, the article focus on the specific value of Amicus Curiae in NAFTA investment dispute arbitration, and then points out the present problems as well as makes some suggestions for innovation.

在分析了法庭之友制度具有的一般价值和指向它的主要负面评价的基础上，分析法庭之友在NAFTA投资争端仲裁中的特殊价值；然后指出其现存的主要问题并提出有关改进的建议。

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。

The process of ecological degradation in the vicinity of Shaoguan Pb/Zn smelter may be summed as: heavy metals and acidic deposits from the waste gas from smelter resulted in the vanishment of the sensitive plant species, increasing accumulation of heavy metals in soils and acidification of topsoil worsened the chemical properties and then shallow-rooted plant, mainly the herbaceous, vanished. With the demolishment of the vegetation cover, increasing water-soil erosion worsened physico-chemical properties of soil and, subsequently, some woody plants disappeared and barren land was finally appeared.

该生态系统的退化过程可以归纳为：来自于冶炼废气的重金属和酸沉降导致了敏感植物的消亡，丧失了对土壤的缓冲保护作用；重金属在土壤表层的积累，酸性物质在土壤表层的增加导致的土壤酸化以及由此引发的有机质与养分的淋溶和重金属及Al的活性增加，加剧植被的快速退化，特别是浅根植物的衰亡；地被层的破坏，导致水土流失和土壤侵蚀加深，进一步恶化表层土壤的理化性质，一些木本植物随之消失，最终形成光板地。

By transforming the delayed neural model to the describer model and then employing the Lyapunov-Krasovskii stability theorem, linear matrix inequality LMI technique, S procedure, and some algebraic inequality method, a new sufficient condition is derived, which is determined by the coefficients of the model and includes more tuning parameters for determining the globally asymptotical stability of recurrent neural networks with time-varying delay.

首先将要研究的模型转化为描述系统模型，然后利用Lyapunov-Krasovskii稳定性定理、线性矩阵不等式技术、S过程和代数不等式方法，得到了确保时变时滞递归神经网络渐近稳定性的新的充分条件，并将它应用于常时滞神经网络和时滞细胞神经网络模型，分别得到了相应的全局渐近稳定性条件。

For of other affections, there is occasion given, but now and then; and therefore it was well said, Invidia festos dies non agit: for it is ever working upon some or other. And it is also noted, that love and envy do make a man pine, which other affections do not, because they are not so continual.

公众的嫉妒对国家来说是一种可能蔓延的疾病，正如传染病可侵入健全的肌体并使之犯疾一样，国民一旦产生这种嫉妒，他们甚至会反对最合理的国家行为，并使这些行为背上恶名；而为此采取宠络民心的举措也几乎无济于事，因为这正好表明当局害怕嫉妒，软弱可欺，结果造成的损害更大。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。