交流分析

Lord, the American Ambassador in China, to participate an exchange plan. In September 1987, Mr. Li went to America again for his master degree. In June 1989, Mr. Li attained his master degree on International Finance from Brandes University. As an analysis of Acadian Investment Management Company, Mr. Li started his investment management practice in 1990. In March 1991, Mr. Li was employed by the famous Wall Street Investment Bank and the Brother Braun Corporation as senior analysis in investment strategy department, analyzing and researching investment strategy. In September 1995, Mr. Li was appointed by the Oppenheimer Funds and responsible for the global stock investment.

1986年6月，李山泉受美国驻中国大使洛德邀请，参加美国汉弗莱交流计划。1987年9月，他重返美攻读学位。1989年6月，获布兰德斯大学国际金融硕士学位。1990年作为为Acadian投资管理公司的分析师开始投资管理的实践。1991年3月到纽约华尔街，被著名的老牌华尔街投资银行、布朗兄弟公司聘任，在投资战略部任高级分析师，从事投资战略的分析研究。1995年11月应聘到奥本海默基金公司，负责该公司环球股票投资的管理工作。

During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica

阿拉伯芥是第一个完成基因体定序的开花植物，其基因体资讯提供植物学研究的重要依据；在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时，阿拉伯芥近缘的野生物种自然成了不可或缺的关键；跟阿拉伯芥近缘的物种包括A halleri及A lyrata，其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾，与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽，而A lyrata ssp kamchatica主要分布於东北亚及台湾，与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔，这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构，本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种，两对互为亚种的姊妹群，以阿拉伯芥为外群进行研究，在四个物种完成98个同源基因的分子序列，利用套装软体MCMCcoal来估算祖先物种的遗传变异，亦估算现生物种的核苷酸歧异度，观察到？多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度，显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式，在某些物种配对间邻域种化模式应比异域种化更为可能；在基因树与物种树的比较，98个基因片段的亲缘模式只有28个是与已知物种树一致的，有23个基因其树状图支持{ lyrata} thaliana的型式，藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率，推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。

Examining from the literary creation practice and opinions of China , Japan , India , I summarize the difference and geting in touch between " amorousness" and love, that it is artistic

并通过川端康成和泰戈尔、大江健三郎的创作比较，揭示在现代化背景下，艳情观所体现的文化交流与融合的启示意义。4、在以上分析的基础上，探讨艳

What this thesis will be done is: 1, Combing amorousness development and change of Japanese literature , summarizing its characteristic, giveing amorous literature objective localization and appraise with academic serious attitude.

本论文要做的就是：1、梳理日本艳情文学的发展流变，总结其特征，以学术的严肃态度给艳情文学客观的定位和评价。2、通过对日本艳情文学模式产生、发展和嬗变的分析，启示和警醒现代人面对生存的缺失，思考精神的归依和存在的意义。3、不同的文化之间的交流与融合是不可逆转的历史趋向，但泯灭差异与个性的汇通势必会有给丰富多彩的人类文化带来单调和死寂的危险。

But at present the on-line monitoring technology was concentrated on AC cable, the relevant research on DC feeder cable was scarcely carried out around the world, and the on-line monitoring technology on AC cable can not be adopted. Then, in the thesis, the faults reasons were analyzed and fault models with real project were set up started with the faults of the DC feeder cable.

由于直流馈出电缆在线监测技术国内外未见报道以及交流电缆在线监测技术不能移植于直流馈出电缆在线监测的现状，论文首先从直流馈出电缆故障分析入手，分析了直流馈出电缆故障原因，建立了具有工程意义的直流馈出电缆故障模型。

This article described the language teaching method which for hundred years deaf school uses (sign language teaching method, spoken language teaching method, comprehensive junction conversion of sixteenths to decimal, bilingual double cultural teaching method) as well as the spoken language,...

本文描述了百年来聋校所采用的语言教学方法(手语教学法、口语教学法、全面交流法、双语双文化教学法)以及口语、手语的含义；调查了长春地区一所聋校低、中、高年级语文教学中教学语言使用的情况，并分析了一些教学现象；根据调查与分析，提出了一些具体可行的改进聋校语言教学的措施，分别为：教学语言在各年级段合理使用的措施，提高教师教学语言效率，充分发挥聋人教师的作用。

Tests were carried out using ±1 000 kV simulation tower in this paper, and switching impulse and lightning impulse flashover characteristic curves of typical air gap in ±1 000 kV transmission tower were obtained. These curves were compared with test results of ±500 and ±800 kV air gap, and the flashover characteristic of 750 kV AC transmission tower and square tower window were also discussed in this paper.

利用±1 000 kV模拟塔头进行试验，得到了±1 000 kV杆塔典型空气间隙的操作冲击和雷电冲击放电特性曲线，并与±500和±800 kV杆塔塔头的空气间隙研究成果进行对比分析，同时结合750 kV 交流杆塔塔头和正方形塔窗的操作冲击特性进行了讨论和分析。

Michael Q. Zhang, Professor of Cold Spring Harbor Laboratory and Changjiang Chair Professor of Tsinghua University, and Dr. Xuegong Zhang, Professor of Tsinghua University and Tsinghua National Laboratory. The candidate should have a gained Ph.D degree in related majors and have experience in computational biology research such as DNA sequence analysis and microarray data analysis. In particular, strong skills in machine learning / statistical pattern recognition and working knowledge of molecular biology are required. Efficient ability of reading, writing and communicating in English is required.

Zhang博士在清华信息科学与技术国家实验室生物信息学研究部与张学工教授联合招收计算分子生物学博士后研究人员1-2名，应聘者需具有相关专业的博士学位，在如DNA序列分析、基因芯片数据分析等方面有计算生物学研究经验，尤其在机器学习与统计模式识别方面较强的基础和技能，在分子生物学方面有必要的知识，同时需要有较强的英语阅读、写作和交流能力。

The results show that:(1) The space-charge fields(include dc space-charge fields and ac space-charge fields) have important effect on the beam-wave interaction output power, make the saturated output power lower, saturated position delay;(2) The back-radio excited by the electron beam has little effect on the output power, and can be ignored;(3) The transverse motions of electron beam has some effect of the output power;(4) The means of phase velocity taped and bunch compression can improve the relativistic TWT efficiency, especially bunch compression can greatly improve the efficiency.

五、分析了相对论行波管三维非线性特性，分析结果表明：(1)空间电荷场（包含直流和交流空间电荷场）对注波互作用输出功率影响很大，会造成饱和输出功率减小，饱和位置推后；(2)电子注激发的反向辐射对输出功率影响比较小，基本上可以忽略不计；(3)电子注横向运行对注波互作用的直接影响比较大；(4)通过改变耦合腔内半径来调节慢波结构相速，采用相速跳变和预群聚的方法可以改善相对论行波管的效率，特别是采用预群聚方法，可以尽量提高相对论行波管的效率。

The control signals of the PWM rectifier are obtained by comparing the current of AC side with triangular wave (or saw-tooth wave) directly, which can implement the steadiness of the voltage of DC side and unit capacity factor of the system. At the same time, harmonic component of the system is abstracted through Instant Reactive Power Method, which can be smoothed by Integrated Learning Boost Converter Control.

本文采用重复学习Boost变换技术，利用滑模变结构控制技术对单相PWM整流器恒频Boost变换进行了分析，提出将交流侧电流直接与三角波相比较得到开关控制信号的方法，实现直流电压恒定不变及系统单位功率因数；同时，利用瞬时无功功率法分析系统谐波，并在谐波域内使用重复学习的控制方法，结合Boost变换技术，有效滤除系统谐波有功电流。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。