基于语料库和语篇衔接的英语词汇学习模式研究

结合实例探讨一种语料库和语篇衔接相结合的词汇学习模式,利用语料库中的真实语料,学习词汇的不同搭配关系,类联结和语义韵等语言特征,并在语篇中通过词汇衔接加深对词汇的认识,用词汇链记忆联想词,领会词汇不同语境和语体中的用法。二者的结合必将促进使学习者掌握更多的词汇,并学会其应用。     

文本知识分析中的概念层次网络方法

文中提出了一种文本知识分析中的概念层次网络方法。该方法是一种文本概念分析的新思路。探讨了用面向对象技术与框架技术结合实现文本知识的抽象概念和具体概念的自动分析、知识组织、检索智能化方法。     

赵瑜报告文学论

作为跨越1980年和1990年代的报告学作家，赵瑜有着独特的创作理念。他的本由早期的对地域性或行业性具体人、事的描述上升到对社会公共话题的宏大叙事，并显示出独特的反思与批判意识。其艺术建构的先锋性和包容性，生动地体现出晚近20年报告学体嬗变的历史印记。     

基于现金流量法的企业外汇风险暴露度量研究

随着中国企业国际化程度的提高,由汇率波动所带来的企业价值变化的外汇风险将越来越大。因此,如何准确而简约地衡量企业外汇风险是一个亟待解决的问题。从这个角度出发,通过实证研究发现现金流量法能较好地度量中国企业的外汇风险暴露。     

多重数字水印技术

数字水印技术在保护数字产品版权等方面起到了重要的作用。随着计算机和因特网技术的飞速发展,对数字水印技术的要求也越来越高,多重数字水印就是应时而生的一种技术。本文从图像与文本两大方面分析总结了多重数字水印的现有算法,讨论了其应用及优缺点并提出了多重数字水印下一步的发展方向,对其进一步研究有着重要的意义。     

Contextual feature selection for text classification

We present a simple approach for the classification of “noisy” documents using bigrams and named entities. The approach combines conventional feature selection with a contextual approach to filter out passages around selected features. Originally designed for call for tender documents, the method can be useful for other web collections that also contain non-topical contents. Experiments are conducted on our in-house collection as well as on the 4-Universities data set, Reuters 21578 and 20 Newsgroups. We find a significant improvement on our collection and the 4-Universities data set (10.9% and 4.1%, respectively). Although the best results are obtained by combining bigrams and named entities, the impact of the latter is not found to be significant.     

论高校学报正文的编辑加工

编辑加工足保证高校学报质量的重要环节，又是一项细致繁重的工作。针对高校学报编辑加工中存在的问题，总结多年编辑工作的经验，从稿观点、字、图表、结构等方面论述了高校学报正编辑加工的内容和作用。     

Understanding Greek Primary School Children's Comprehension of Sun Exposure

The purpose of this study was to assess Greek primary (1st to 6th grade) school children's understanding of sun exposure during summer vacation. Our results show that children know the damaging effects of long time exposure and the precautions that should be taken during sun bathing (sun glasses, hat, umbrella, sunscreen, etc). Nevertheless, they do not seem to avoid being exposed between 12.00 A.M. and 15.00 P.M., which is the most dangerous time. The socioeconomic status of father has no effect on the attitude of children towards taking protection measures when exposed to the sun, however, the educational status of the mother appears to influence children's reported knowledge and behaviour. Place of residence (urban or rural areas) and gender does not influence their knowledge on the sun's damaging effects and the precautions they should take. Finally, as children grow older they seem to gradually reduce the protective measures they take.     

A text to speech interface for Universal Digital Library

INTRODUCTION The objective of Universal Digital Library (UDL) is to capture all books in digital format (Universal Digital Library, 2005; Digital Library of India, 2005). Most of the digital information present in the digital world is accessible to a few who can read or under- stand a particular language. Language technologies can provide solutions in the form of natural interfaces so that digital content can reach the masses and fa- cilitate the exchange of information across differe…     

Effect of lead exposure on the immune function of lymphocytes and erythrocytes in preschool children

INTRODUCTION Over the past few years, systematic studies onthe effect of lead exposure on the human body haveled to an understanding that lead is neurotoxic andhas adverse effect on the immune system. So far,however, research on the immunotoxic effects oflead has been limited to animal experiments andpeople with occupational exposure to lead (Shen etal., 1996; Mishra et al., 2003; Liu et al., 2000).Presently, there are no reports on the influence oflead exposure on lymphocyte and …