我国高校专利工作影响因素及对策分析

The factors affecting the grant of patents of colleges and universities in China are analyzed. The deficiencies of patent affairs of colleges and universities are pointed out, and finally the countermeasures to improve their patent affairs are discussed.     

网络信息资源的合法使用

Various forms of infringements upon the copyright of Internet information resources are summarized. Ways of using Internet information resources legally are discussed.     

远程教育的方法与模式研究

To follow the development and popularization of network technology and multimedia technology, remote edu-cation has devdoped quickly in recent years.In this article, the method and scheme of remote education are introduced, the characteristics of remote education are studied.Finally, the new scheme of remote education and its development in the future are discussed.     

小议分辨率与输出图像的关系

合理的分辨率对图像输出效果起着至关重要的作用.本文首先确定分辨率的概念,然后以扫描--处理--输出这样一种常见的图像处理过程为例作了分辨率选取的探究,设法找出了分辨率如何选取的一些规律.     

Understanding the Water Crisis in China: Towards a Harmonious Aquatic Environment

The water resources in China are much often regarded as insufficient and unevenly distributed. As a result of fast economic development and urbanization in recent years,serious water shortage,contamination and deterioration of aquatic ecosystem are arising. In order to establish a sustainable development,scientific utilization of water resources and protection of the aquatic environment are urgently needed in China.     

信息化水平测算方法的问题及改进

The problems existing in the method of calculating informatization level arepointed out. Three improved methods, which are used to calculate the informatization indices of Guangxi Province from 1992 to 1998, are introduced.The results show the informatization indices of Guangxi Province in 1998 are far below those calculated with the original method.     

电子式互感器输出接口及通讯研究

电子式互感器的研究已成为互感器领域内研究的热点,但是还没有进入实用化阶段.目前互感器还存在着多种输出形式.本文介绍了一些较为常见的电子式互感器输出形式并介绍了两种相关的其通讯技术.     

Material research from the viewpoint of functional motifsOA

As early as 2001,the need for the ’functional motif theory’ was pointed out,to assist the rational design of functional materials.The properties of materials are determined by their functional motifs and how they are arranged in the materials.Uncovering functional motifs and their arrangements is crucial in understanding the properties of materials and rationally designing new materials of desired properties.The functional motifs of materials are the critical microstructural units(e.g.constituen...     

浅谈企业数据集成

The paper introduces the necessity and general method of enterprise data inegration.Then the effects of XML on eraerprise data integration are discussed and the main problems in the process of eraerprise data integration are listed.     

信息检索模型及其在跨语言信息检索中的应用进展

信息检索发展中的一个重要理论问题是如何对查询与文档进行匹配,由此形成了不同的信息检索模型。跨语言信息检索是信息检索研究的一个分支,也是近年来的热点问题。本文主要对信息检索模型的研究进展,及其在跨语言信息检索中的应用进展进行分析与综述。     

学科交叉与信息自动检索--科学发展呼唤新的信息自动检索工具

The intercrossing of disciphnes is an important impetus of scientific development. The existing automatic information retrieval systems are not propitious for the generation of new ideas and the interdisciplinary multiplication as they are developing towards more intelligent, knowledgeable and specialized ones. The scientific development calls for a new automatic information retrieval tool. The research will be a comprehensive subject involved with many disciplines and rields, and need to be conducted in order and step by step.     

影响科技查新质量的因素分析和如何确定恰当的查新点

本文就科技查新工作中存在的一些问题,建议性地提出具体解决方案,以提高我院查新质量。首先论述了我院的查新现状,然后,从人为因素和客观因素两大方面分析了影响我院查新工作质量的主要原因,其中,人为因素包括查新员自身业务素质、客户人为因素两方面,而客观因素则包括数据库资源、工作时间等因素。查新点是贯穿整个科技查新报告的生命线,查新点应该是体现该查新课题的核心内容;本文从两个具体的查新案例着手,描述了确定恰当的查新点分析过程。最后,真对我院查新工作所存在的问题,提出展望。     

网络环境下情报检索模型理论发展及评价体系研究

相关性测量是信息检索的关键。人们提出了一系列信息检索模型以从理论与实践的角度给予解答。本文以发展的眼光探讨了各种信息检索模型的理论、特性和应用，试图从模型应用的角度建立一套用于网络环境下的信息检索模型比较和评估指标体系。     

网络全文检索系统的实现技术及其未来发展

本文介绍了全文数据库的概念、特点，详述了网络全文检索系统的构建模型和核心技术，提出了全文检索系统现存的主要问题和解决办法，并结合信息检索的总体发展趋向，探讨性地提出了全文检索系统的未来发展。     

基于段落检索和段落内容分析的知识化检索系统设计

设计了一个基于段落检索和段落内容关系分析的知识化检索系统,分析了系统数据流,介绍了系统功能框架,包括段落检索和段落内容关系分析等核心模块,重点解决了段落鉴别、段落关系分析方法等问题。     

试论联机检索策略

讨论了计算机检索策略定义及其在检索中的地位和作用。作者根据自己的实践经验,探讨出几种行之有效的检索方法:主题词和分类号联合检索,内容概念转换检索,信息反馈检索,扩检和缩检。     

The measures precision,recall, fallout and miss as a function of the number of retrieved documents and their mutual interrelations

In this paper, for the first time, we present global curves for the measures precision, recall, fallout and miss in function of the number of retrieved documents. Different curves apply for different retrieved systems, for which we give exact definitions in terms of a retrieval density function: perverse retrieval, perfect retrieval, random retrieval, normal retrieval, hereby extending results of Buckland and Gey and of Egghe in the following sense: mathematically more advanced methods yield a better insight into these curves, more types of retrieval are considered and, very importantly, the theory is developed for the “complete” set of measures: precision, recall, fallout and miss.     

情报检索的发展——情报学世纪回眸之一

本文站在世纪之交的2000年，通过情报检索系统历史的回顾，描述了情报检索的发展历程。从手工情报检索、机械情报检索、计算机情报检索到网络情报检索系统四个阶段，阐述了各个时期情报检索语言、情报检索技术和情报检索数据库的发展状况，说明计算机等新型信息技术的使用是促进情报检索现代化的基本动力，基于因特网的网络情报检索系统将是情报检索系统的发展模式。     

基于互联网的海量信息检索系统检索策略模式研究

在检索系统对基于互联网的海量信息进行检索的过程中,检索效率很大程度上取决于检索策略的质量。为提高检索策略的正确性,本文根据信息逻辑检索的基本原理,并参照DIALOG系统,提出了检索需求的主题分析法则,并在此基础上建立了检索策略优化模型。同时,还给出了此模型在操作执行过程中的组配机制。