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By utilizing the concepts and methods developed in Algebra Topology,Algebra Geometry and Algebra Representations,we first depicted the concepts and results of Incidence Algebra which reflects the linear structure of underlying posets and Sheaf theory which reflects the topological structure of underlying poset in the framework of Category Theory.

本文综合运用了代数拓扑、代数几何及代数表示论里发展起来的概念与方法，首先在范畴的框架下，对和偏序集的线性结构密切相关的Incidence代数，及与偏序集的拓扑结构紧密联系的层，进行了刻画。

Incised fluvial systems and soil crust developed on top of each parasequence, which may indicate a significant subaerial exposure period after construction of each parasequence.

在每个准层序顶部都发育下切河体系及古土壤层，说明在每个准层序形成之后，都曾暴露过地表并遭受到侵蚀。

Mainly belonged to Loranthaceae. Plants of Phacellaria Benth. and their hosts were mainly distributed in tropical and subtropical area. Plants of Phacellaria Benth. maybe originated in tropical area in the south of China before Tertiary. Their ancestors were parasitic on ancestors of some plants of Loranthaceae by chance during Tertiary. It took them millions of years to form a sturdy relationship between parasites and hosts. Ph. rigidula was a hemi-parasitic subshrub. In area observed, its host was mainly Taxillus caloreas var. fargesii.

的硬序重寄生(Ph.rigidula)及其寄主植物做为研究植物与植物间协同进化的材料，对重寄生属植物的起源、与其寄主的分布、硬序重寄生的形态学特性、解剖学以及化学成分进行了研究，结果表明：重寄生属植物主要寄生在桑寄生科植物上，分布区与其寄主的基本一致，均主要分布在东南亚和中国南部的热带与亚热带地区；重寄生属植物可能起源于第三纪之前某一时期的华南热带地区，随后向周边地区扩散。

A lot of excellent circuits can be quickly and easily designed by using of Multisim2001. This thesis designed digital answer bell, digital frequency meter, up-down-counter, adder- subtracter .

本文利用Multisim2001在数字电路方面的仿真能力，设计出了数字式抢答器、数字频率计、正序倒序计数器、个位数的加法减法器。

This innovative DNA-sequencing technology was invented by Dr. Jingyue Ju, professor of Chemical Engineering and head of DNA Sequencing and Chemical Biology at the Judith P. Sulzberger, M.D.

这项革命性的DNA测序技术是由化学工程教授Jingyue Ju博士和哥伦比亚大学哥伦比亚基因组中心DNA测序和生物化学系主任Judith P。

In a sequence of the mouth, jonidan students can only do something like fetching water sweeping Daza, only three paragraphs to the purpose, some of them will teach technology, and to the 12 students who is a professional sumo wrestling, Known as the "Guinness" is not only wages but also participate in various competitions to win prize money.

处于序之口、序二段的学员只能做一些打水扫地之类的打杂工作，只有到了三段目的时候，师傅才会传授一些技术，而到了十两的学员就是职业相扑选手了，被称为"力士"，不仅有工资，而且还可以参加各种比赛赢取奖金。

After the balance and symmetry on operation function is realized with unsymmetrical structure, the transformer can be made not only for BT power supply, but also for AT power supply, which can meet the requirement of 2-phase power-supply system.

行功能上的平衡与对称，它既可制造成用于铁路电气化"BT"或直接供电方式供电的产品，又能制造成按"AT"供电方式的产品，可满足两相制供电的要求，能有效减小零序和负序电

Results (1) The forward and reverse subtracted cDNA libraries of different metastastic potential large cell lung cancer cell lines were successfully constructed;(2) With blue-white colony and dot blot, 307 positive clones in the forward subtracted library and 78 positive clones in the reverse subtracted library were obtained;(3) 55 clones were successfully sequenced in the forward subtracted library. Homolog analysis confirmed 23 differential expression segments, which were similar to the human genes already known, including NME2, NPM1, MT 2A, HSPE1, TAFIA, EPRS, PX19 and EIF3S9 et al;(4) 31 clones were successfully sequenced in the reverse subtracted library. Homolog analysis confirmed 16 differentially expressed segments. 15 of them were similar to the human genes already known, including ANXA2, TUBB, PKN2, GNAS, EEF1A1, SSR2 and RPLPO et al. Only one segment had partial homology to known human genes. This segment was supposed to be the new EST segments which might not have been cloned.

结果(1)成功构建人大细胞肺癌高低转移株差异表达基因正向消减cDNA文库和反向消减cDNA文库；(2)经蓝白菌落筛选和斑点杂交，正向消减文库获得307个阳性克隆，反向消减文库获得78个阳性克隆；(3)正向消减文库挑选55个克隆成功测序，经同源性分析最终确定差异表达基因片段23个与已知人类全长基因具有很高相似性(95％～100％)，这些基因包括NME2、NPM1、MT2A、HSPE1、TAFlA、EPRS、PX19和EIF3S9等；(4)反向消减文库挑选31个克隆成功测序，经同源性检索和比对最终确定差异表达基因片段16个，其中15个与人类全长基因具有很高相似性(95％～100％)，包括ANXA2、TUBB、PKN2、GNAS、EEF1A1、SSR2和RPLPO等基因。1个片段和己知人类基因仅有部分相似性，表明它可能是未被克隆的人类基因EST片段。

In the part of empirical analysis of Chinese IPO first-day return, the difference between existing study and this study is that we use principal components analysis to extract from five factors to construct investors'sentiment index, add it to controled varibles, on which we examine the influence of offering mechanism on IPO first-day return. Moreover, we gather statistics and compare the IPO holding return for lockup period between fixed-price-class offering method and bookbuilding-class offering method, as well as price range between Chinese A-share market and Hongkong stock market, which prvide comprehensive evidence to appraise Chinese IPO bookbuilding mechanism. 2. Compare to the existing literatures which consider discount or allocation, incentive allocation and discount are considered at the same time in optimal mechanism design in this dissertation, and the offering bottom price is introduced to the price range. We investigate the relationship between price range and allocation quantity, and obtain the optimal price range and allocation strategy so that the advantages of independent allocation are reflected. On the other hand, the disadvantages of independent allocation are reflected in the manipulation in case of no restriction on IPO allocation. To distinguish from the existing literatures, bookbuilding mechanism is introduced to the model. We study the allocation strategy adopted by the underwriter in the pooling equilibrium of manipulation. In addition, we analyze the incentive compatibility conditions to which the existence of pooling equilibrium should satisfy and examine some factors'impact on the existence of manipulation.3. In bookbuilding without independent IPO allocation, Chinese realistic IPO background is considered and the condition of bookbuilding and fixed-price hybrid offering is added. Divide bookbuilding and fixed-price hybrid offering into sequential hybrid and simultaneous hybrid, and point out that the key points of subscription strategy in the two kinds of hybrid are different. Through modeling and simulation we obtain the impact of institutional investors'subscription strategy on bookbuilding without independent IPO allocation, which fill the gap in related research. Moreover, in the part of IPO bookbuilding with over-allotment option, the pricing strategy is divided into hot-IPO strategy and weak-IPO strategy. Take into account the procedure of Chinese IPO with over-allotment option, it presents how the underwriter determines the pricing strategy and what effect it brings to offering price and issue size through modeling and simulation. Therefore, it is instructive as a complement to existing literatures.

此外，对我国A股市场询价发行方式与固定价格发行方式下的IPO锁定期到期时持有收益率、以及我国A股市场与香港市场的询价发行价格区间进行了统计比较，为评价我国IPO市场的询价发行提供了比较全面的依据。2、相比已有文献仅考虑折价和分配中的一种激励措施，本论文在有自主配售权下的机制设计中并用了分配与折价两种激励措施，并且在价格区间的制定中引入发行底价，考察了价格区间与分配量之间的关系，得到最优的价格区间和分配策略，从中体现自主分配权的优点；在有自主分配权下的操纵行为研究中则体现了自主配售权的弊端，与已有文献不同的是，在模型中引入了累计投标询价机制，研究了承销商在混同均衡操纵中采取的分配策略，并对操纵存在的条件进行分析讨论，得出各个因素对混同均衡操纵存在的影响。3、在无自主分配权下的询价发行中，充分考虑了我国实际应用的背景，加入了与固定价格发售混合的条件，并将询价与固定价格混合发行分为序贯与同步两种方式，指出机构投资者在两种情况下申购策略的侧重点各有不同，通过对序贯混合发行方式下的网下累计投标策略以及同步混合发行方式下的资金分配策略的模型建立和数值仿真，考察了机构投资者申购策略对无自主分配权下的询价发行的影响，填补了相关研究文献的空白；在包含超额配售选择权的询价发行中，将发行定价策略分为热销策略和弱销策略，在考虑了我国含超额配售选择权的发行流程下，通过建模以及数值仿真得出承销商会对发行定价策略作出怎样的选取，进而会对新股发行价格、发售数量产生怎样的影响，对目前相关研究的缺乏做出了有益的补充。

Both the theory and empirical result show that cumulative link model is appropriate. Moreover, the ordered logistic regress is proved better than ordered probit regress by the test of goodness of fit.

理论与实证结果均显示，积累线性模型更适合用于建立单笔交易模型；其中序次Logisic回归又比序次Probit回归的拟合效果更好。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。