论现代投资银行的发展及启示

在过去30年中，世界经济步入现代发展的增长期，金融市场全球化与金融创新工具对世界经济增长及一体化所带来的作用已日益为人们所认识并加以研究；而作为金融体系中的重要组成部分之一——投资银行及其业务，则发生了比其他任何领域更为巨大的变化和突破，它在金融资源分配机制中所发挥的功能和作用甚至引导着世界现代经济发展的趋势和格局。如果没有投资银行，就没有今天西方资本主义国家发达的金融市场、高效的资源配置体制、富有效率的企业组织结构，当然也不会有西方国家高度发达的市场经济。 最初的投资银行，主要从事公司证券的承销和分销以及二级市场上市证券的交易和操作。随着金融理论的重大突破及公司业务全球化所带来的商业环境的...学位：经济学硕士院系专业：经济学院经济研究所_世界经济学号：19950900

Effect of Flue-gas Cleaning Devices on Mercury Emission From Coal-fired Boiler

为研究燃煤锅炉烟气净化设施对汞排放特性的影响,采用Ontario-Hydro方法,对设有催化脱硝、静电除尘、海水脱硫的300MW燃煤锅炉排放烟气中汞的含量与形态进行分析,同时测定锅炉的煤、底渣、飞灰等固体样品以及脱硫塔前后、曝气之后海水样品中的汞含量。实验结果为:烟气中的气态汞占总汞的79.1%以上,脱硝催化剂对汞的价态具有强烈的转化作用,烟气中83.4%的气态Hg0被氧化成气态Hg2+;静电除尘对颗粒态汞的去除率几乎达到100%;在脱硫塔中,海水对烟气中汞的洗脱率高达73.6%,曝气后排放前的海水中含汞量是新鲜海水的5.5倍。研究表明锅炉烟气净化设施对汞的排放特性有着重要的影响。In order to study the effect of flue-gas cleaning devices on mercury emission from coal-fired boiler, Ontario-Hydro method had been applied to determine the mercury concentration and speciation in the flue-gas emitted from a 300MW coal-fired boiler, which was equipped with various pollution control devices, including selective catalyst reduction (SCR) De-NOx system, electrostatic precipitator (ESP), and flue-gas seawater De-SO2 system (FGD). Mercury concentration in raw coal, bottom ash and fly ash of the boiler, seawater at the inlet and outlet of SO2 absorption reactor and the drainage of aeration sink, were also analyzed. The results indicate that the percentage of gaseous mercury in total mercury discharged is more than 79.1%. De-NOx catalyst strongly affects the mercury speciation transformation, showing a conversion rate of 83.4% for Hg0 to Hg2+. The removal efficiency of particulate mercury by ESP is close to 100%. With seawater FGD, the removal efficiency of mercury is as high as 73.6%. The mercury concentration in the seawater of drainage from aeration sink is 5.5 times higher than that in fresh seawater. The study shows that the flue-gas cleaning devices in coal-fired power plant play an important role on mercury emission characterization

面条品质性状相关基因在四川小麦中的分布

为给面条小麦亲本材料的选择提供依据,利用多重PCR技术分析了Wx-B1和2个主效PPO位点的等位基因在104份四川主栽小麦和骨干亲本中的分布,并检测了59份新育成品系的淀粉糊化特性。结果表明,控制低PPO活性的等位基因PPO-2Ab和PPO-2Da的频率分别为42.3%和83.6%,Wx-B1蛋白缺失基因Wx-B1b的频率为26.9%,四川小麦淀粉特性整体表现较优良。Wx-B1缺失小麦在峰值粘度、稀懈值、最终粘度和反弹值方面与正常类型间差异显著。绵阳26、川麦107、川麦43等是面条小麦育种的优良亲本。

Stocking carrying machine hand device and carrying method thereof

本发明公开了一种袜子搬运机械手装置及其搬运方法，机架上设置有一横跨在工作台和传送带之间的横梁，横梁的下侧面上设置有一滑轨和一滑块，滑块下方连接有一滑动基座，滑动基座的侧方设置有一固定铲板和一活动压板，固定铲板水平贴面游离在工作台和传送带的工作端面上，活动压板尾端两侧轴接在滑动基座上的一对转轴上，其中一转轴连接有一驱动臂，驱动臂铰接在一伸缩气缸上，横梁的旁侧面上设置有一主动带轮、一从动带轮和一齿带，主动带轮连接有一正反转电机，齿带的下循环带体上设置有一运动块，运动块与滑动基座相连接。本发明固定铲板贴面于工作端面而工作，它从底部整体将袜子铲起并托住，所以在搬运袜子过程中不会凌乱整齐的袜子

Current Statistical Machine Translation Research in China

2005年7月13日至15日,中国科学院自动化研究所、计算技术研究所和厦门大学计算机系联合举办了我国首届统计机器翻译研讨班。本文主要介绍本次研讨班参加单位的测试系统和实验结果,并给出相应的分析。测试结果表明,我国的统计机器翻译研究起步虽晚,但已有快速进展,参评系统在短期内得到了较好的翻译质量,与往年参加863评测的基于规则方法的系统相比性能虽还有差距,但差距已经不大。从目前国际统计机器翻译研究的现状和发展趋势来看,随着数据资源规模的不断扩大和计算机性能的迅速提高,统计机器翻译还有很大的发展空间。在未来几年内,在基于短语的主流统计翻译方法中融入句法、语义信息,必将成为机器翻译发展的趋势。Institute of Automation,Institute of Computing Technology of Chinese Academy of Sciences,and Department of Computer Science of Xiamen University held the first Statistical Machine Translation Workshop in China together,from July 13th to 15th in 2005.This paper describes the tested systems of involved institutions,and analyzes the results of their experiments.The test results show that although the research of statistical machine translation started late in China,it develops rapidly.The tested systems got quite good results in a short period.Compared with the rule-based systems reported in the formal "863"evaluation,the performance is somewhat lower;however,the difference is small.According to the state of art and the trend of international statistic machine translation research,we believe that there is still great space for the improvement of statistic machine translation,with larger-scale data resources and more powerful hardware.In near future,phrase-based method incorporated with syntax and semantic information will become the mainstream of statistical machine translation.国家自然科学基金资助项目(60272041