XML搜索引擎探微

在简述XML的基础上,从现有的搜索引擎的缺陷、开发XML搜索引擎的条件、XML搜索引擎的分类及其构成等方面出发,对XML搜索引擎进行比较详尽的探讨。     

Web抽取技术在数字图书馆中的应用

从Web页面中挖掘有价值的信息是数字图书馆技术应用的一个重要方式。目前Web页面信息描述大多教是用XML表示的,Web数据抽取技术是Web信息挖掘的关键,文章提出了一种面向HTML或XML描述的web页面的web数据抽取模型并阐述了实现过程。     

三线典藏制在现代图书馆管理中的拓新

本文通过分析三线典藏制的利与弊,提出了现代图书馆的藏书布局应在三线典藏制的基础上加以灵活运用,实行全新的动态典藏管理模式。     

世界女子手球运动技战术发展动态初步研究

本文就2003年举行的世界女子手球锦标赛中,世界前8名队伍及中国队在比赛中各项技术指标,进行数理统计与理论分析,寻找中国队与世界强队之间存在的差距,为中国女子手球队备战2004年雅典奥运会和2008年北京奥运会提供依据。     

新一代WEB技术层：XML

可扩展标记语言（XML）是万维网协会（W3C）定义的用于优化Web上的传输的SGML的子集，它是一种元标注语言，提供一种描述结构数据的格式，本文讨论使用XML作为数据的标准格式，Web发展的趋势是数据集成和管理，而只有利用XML才是解决这一问题的关键。     

巧用单片机实现液晶的动态显示

文章介绍一种基于单片机AT89S51控制的图形液晶显示器动态显示的方法。给出AT89S51和LCM具体的硬件电路图和液晶动态显示的部分程序。     

基于复杂网络动力学的远程教育网站生命力特征

《国家中长期教育改革和发展规划纲要（2010-2020年）》将教育信息化发展纳入国家信息化发展整体战略,强调信息技术对教育发展具有革命性影响。国内许多高校及广播电视大学都希望将各自的远程教育网站打造成提供优质教育资源的＂资源中心＂。但是当前我国远程教育网站存在使用不便、更新慢、不稳定、利用率与易访问率低等情况,用户满意度不高。复杂网络动力学研究动力学模型在不同网络上的性质及其与网络的静态统计性质之间的联系。以复杂网络动力学视角考察远程教育网站的生命力特征,是衡量网站是否具有源动力、是否具有维持网站正常运作活动能力及生存发展能力的一种方法。从网站架构、管理及内容三个角度分析国内外远程教育网站的生命力特征发现：目前远程教育网站存在泊松分布和幂律分布两种架构;泊松分布的远程教育网站网页链接比较随意、均匀,具有较差的抗攻击能力,适合随机免疫的防病毒机制;幂律分布的远程教育网站网页联系紧密合理,对随机攻击具有较强的鲁棒性,但对蓄意攻击和病毒的防护力较差,适合熟识者免疫的防病毒机制。以社团架构的形式梳理和安排网站内容与链接,有助于提升网站自身的生命力。     

An Analysis of the Three Translated Versions of Youth from the Perspective of Dynamic Equivalence

Inspired by Eugene Nida's dynamic equivalence theory,this thesis takes the translation of Samul Ullman's work Youth as a case study.It explores the three translated versions of Mrs.Zhang Aiqing,Mr.Huang Ren and Mr.Xu Hanlin respectively.These versions are analyzed at the levels of lexicology,syntax,rhetoric,semasiology and style.Then it points out that the same effect on the target language readers are as the original text has done on the source language readers,in other words,it proves the efficiency of dynamic equivalence in the translation of Youth.     

Analytical study on the dynamic displacement response of a curved track subjected to moving loads

A closed-form out-of-plane dynamic displacement response of a curved track subjected to moving loads was pro- posed. The track structure was modeled as a planar curved Timoshenko beam periodically supported by the double-layer spring-damping elements. The general dynamic displacement response induced by the moving loads along the curve on the elastic semi-infinite space was firstly obtained in the frequency domain, according to the Duhamel integral and the dynamic reciprocity theorem. In the case of the periodic curved track structure subjected to moving loads, the dynamic displacement equation was simplified into a form of summation within the basic track cell instead of the integral. The transfer function for the curved track was expressed in the form of a transfer matrix. Single and series moving loads were involved in the calculation program. For the verification of the analytical model, the mid-span vertical deflection of a simply support curved beam subjected to moving load was recalculated and compared with the same case in the reference. The research results indicate that： under the same moving loads, the displacement response of the curved track decreases slightly with the increasing track radius, and the displacement response of the curved track with the radius greater than or equal to 600 m is almost equivalent to the displacement response of the straight track; the frequency spectrum of the curved track is more abundant than that of the straight track, which may result in more wheel-rail resonance and rail corrugation in the curved lines.