学位论文

This dissertation systematically studies the principle of twist-roller friction drive, and builds an ultraprecision positioning sy...

本学位论文系统地研究了扭轮摩擦传动系统的原理与实现技术，并研制了一台采用气浮导轨的大行程、高精度一维运动平台。

This dissertation systematically studies the principle of twist-roller friction drive, and builds an ultraprecision positioning system with long stroke using the twist-roller friction drive.

本学位论文系统地研究了扭轮摩擦传动系统的原理与实现技术，并研制了一台采用气浮导轨的大行程、高精度一维运动平台。

Based on some existing works, this thesis is devoted to the study of globalsynchronization for several delayed complex dynamical networks by means of Lya-punov functional, linear matrix inequality and some other skills. some su?cientconditions are obtained to guarantee the synchronization of the considered systems.

本学位论文在现有文献的基础上，通过构造不同的Lyapunov泛函，运用线性矩阵不等式，和一些数学分析方法技巧，分析讨论了几类耦合时滞神经网络模型的全局同步性质，得到了其全局同步的几个判断准则。

It is news transmission academia the first " paper of countrywide outstanding doctor's degree " gainer.

是新闻传播学界第一位"全国优秀博士学位论文"获得者。

Based on the fundamental theory of impulsive differential systems, employing Green formula, Gauss divergence theorem, Jensen inequality and Gronwall-Bellman inequality with impulse, we discuss the oscillation of impulsive partial differential systems by adopting reduction to absurdity and the stability in via of comparison theorem, respectively. Especially, we take an in-depth study on the oscillation of neutral impulsive parabolic systems and the stability of a class of nonlinear impulsive partial differential equations and obtain some useful conclusions.

本学位论文以脉冲微分系统基本理论为基础，利用反证法的分析方法和比较定理，结合Green公式、Gauss散度定理、Jensen不等式、含脉冲的Gronwall-Bellman不等式以及相关数学工具研究了脉冲偏微分系统的振动理论和稳定性理论，特别对中立型脉冲时滞抛物系统的振动性和一类非线性脉冲偏微分系统的稳定性作了较为深入的研究，给出了一些有用的结论。

This PhD dissertation is on the polynomial representations of the general linear group GL_n and related topics.

这是一篇研究一般线性群GL_n的多项式表示及相关课题的博士学位论文。

The result implied that genotype HH of MCW0289E and genotype JO of MCW0258may be regarded as candidate locus for early assistant selection markers in yolk proportion and haugh unit traits of silkies.(3)Means of egg shape index for genotype BG of MCW0289E was significantly higher than those of others. Means of haugh unit for genotype BG of MCW0294 was significantly lower than those of others. Means of egg shape index for genotype JL of MCW0258 was significantly lower than those of others.

标记MCW0289E中，BG基因型的蛋形指数均值最高、哈氏单位均值最低，分别与其它基因型差异显著；标记MCW0258四川农业大学硕士学位论文丝羽乌骨鸡微卫星位点多态性及其与蛋品质性状的相关分析中，JL基因型的蛋形指数均值最低、哈氏单位均值最高，分别与其它基因型差异显著。

The neural stem cells can be isolated from human embryonic cerebral tissue . The ratio of cell clone formation from smaller gestational age is higher than that from elder gestational age .The differentiation of neural stem cells from hindbrain is easier than that from forebrain.

从人胚脑组织的前、后脑中分离出神经干细胞；较小胚龄的脑组织原代培养时细胞克隆的形成比例较高；后脑组织分离的南京医科大学硕士学位论文神经干细胞比前脑组织来源的更容易分化。

In vitro studies by Hinter showed that AK auto Ab could promote the phagocytosis of intermediate filament aggregates by human monocytes and polymorphonuclear neutrophils.

所取得的主要进展有：①证实AK 第四军医大学博士学位论文2auto Ah在正常人和多种动物体内广泛存在，明确其与皮肤多种生理和病理过程密切相关；②发现 AK auto Ah能够抑制培养角质形成细胞伙eratinoc刊e，KC）的增殖代谢，可以抑制KC产生兔疫介质如1＊－6、IL.8，促进＊C凋亡：首次提出＊K allt。

The first part of this thesis researches related theories on service quality management, and discusses the meaning of service quality, fundamental standards of experiencing service, factors of service quality, as well as the meaning and methods of service product improvable design.

本文第一部分研究了服务质量管理的相关理论，阐述了服务质量的含义、感受服务的基本标准、服务质量的构成要素、服务产品改善性设计的概念及其四川大学2001级MBA学位论文方法。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。