肌电图波形的分维表征及模拟初探

本文简单介绍了时间序列、分形和分维的基本概念。初步讨论发现肌电图波是时间序列,可视为自仿射分形曲线,能用分维表征。用R/S分析法计算了几个肌电图的分维,并在Weierstrass-Mandelbrot函数和分数布朗运动基础上模拟了肌电图曲线。最后讨论了分维在体育科学中的应用。     

高等学校须重视学生的情报素质教育

由高校的素质教育谈到了当前大学生情报素质问题,并通过我国发生的某些情况,说明了情报素质的重要。认为高校应加强大学生的情报素质教育。     

未来的信息系统结构模型——B/S计算模式

本文概括地介绍了信息系统结构的发展现状和未来发展趋势。对中央计算模式、Client/Server计算模式和Browser/Server计算模式这三种结构的特点分别进行了讨论 ,在此基础上进一步探讨Browser/Server计算模式的结构、Web服务器的构建、Web服务器与数据库的连接方式。最后给出了这些连接方法的评估 ,以作为基于Web的信息系统设计和开发的参考     

用VisualC++6.0开发网络通信程序

叙述了网络通信的基本原理以及基本的开发方法 ,重点介绍了用VC + + 6 .0开发网络通信的基本方法以及CSocket类的使用 ,同时具体描述了一个网络通信程序的开发过程     

Rapid processing of base and derived forms of words and grades 4, 5 and 6 children's spelling

This paper emphasizes the productive aspect of morphological processingand the effect on spelling proficiency in 226 grades 4, 5 and 6 children. Two convergent studies using reaction time measures aimed at exploring ten- to twelve-year old spellers' sensitivity to, and knowledge of, derivational morphology with lexical items varying in orthographic and phonological transparency and opacity. There is some evidence, from the accurate and rapid vocal production of base forms or derived forms of source words in sentential contexts, that the depth of segmentation to base morphology and the converse process of derived morphology of words, plays a role in spelling performance of these children. There are complex orthographic, phonological and semantic factors affecting morphological processing.     

关于美国政府信息政策的思考

信息政策是有关发展和管理信息事业的方针、原则和方法 ,是推动整个信息事业发展的行动指南。文中以美国政府信息政策为研究对象 ,从其信息的生产、传播、政府资助、知识产权保护、公共利益保护、竞争与垄断及信息的国际化问题等 7个方面进行了探索。参考文献 7。     

Market Concentration Levels in the U.S. Consumer Book Industry: 1995–1996

While many scholars have studied the impact mergersand acquisitions have had on market concentrationlevels in various industries, few have addressed theconsumer book market, an important U.S. culturalindustry. This paper: (1) defines the consumer bookmarket; and (2) using consumer book mergers, salesdata, the U.S. Department of Justice's 1992 mergerguidelines, the Herfindahl–Hirschman Index, andfour-firm and eight-firm concentration ratios testswhether an illegal level of market concentration or aviolation of Justice's antitrust guidelines wereevident in 1995 and 1996. Data on market entrybarriers, outputs, and prices are also analyzed.     

留美学生与孟禄的中国教育调查

美国大教育家孟禄来华调查中国教育是中国近代教育史上的重要事件之一。这一事件与留美学生有着密切的关系。留美学生在其中起了重要作用。     

学术期刊文献信息的传播与编辑

The characteristics and functions of academic journals and the new demand for documentary information in academic journals in the information age are expounded. By introducing the characteristics of edition and dissemination of printed journals, secondary documents and academic journals (CD), the paper emphasizes the importance of large-scale integration and secondary edition of documentary information in journals for enhancing information dissemination and availability ratio of academic journals.