网络数据库服务效益的评价指标体系研究

网络数据库服务效益评价是对网络数据库服务效果的检验,也是对网络数据库服务进行调控的依据.运用系统论的观点和层次分析法,提出了网络数据库服务效益描述指标体系的递阶层次基本框架和评价指标体系的递阶层次综合评价模型.     

基于模糊综合评判法的高校网络数据库质量评价

分析了网络数据库质量评价的意义,建立了由6个一级指标,相应的30个二级指标构成的网络数据库评价指标体系.运用模糊综合评价方法,结合实例给出了进行网络数据库质量评价的步骤和方法.     

网络数据库评价指标体系构建

针对网络数据库利用定性与定量相结合的方法,建立起一套客观、科学、合理的综合性评价指标体系.采用网上特尔菲法和基于指数标度的层次分析法.建立判断矩阵的过程中,采用"等差分级、等比赋值"的指数标度取代1-9标度系统,获得非常满意的一致性检验结果.     

基于网络影响力的电子政务建设绩效评价

网络影响力是电子政务绩效评估的重要组成部分。本文在利用层次分析法建立政府网站网络影响力评价指标体系的基础上，对我国32个省级政府门户网站的网络影响力进行了测评。并以上海市为例，测定了其所属行政部门和区政府网站的网络影响力。根据测评结果，我们发现目前仍然存在重建设轻利用的问题。     

Springer Link网络数据库新版评价

对Springer Link网络数据库新版进行了简要介绍与评价.     

高校图书馆网络信息服务质量测评研究

在问卷调查的基础上,建立一套适用于高校网络信息服务质量测评的指标体系,并利用该测评体系对佛山地区高校图书馆网络信息服务现状进行分析,提出对策建议。     

电子期刊数据库评价指标体系的构建

在分析国内外研究现状的基础上,构建了适合电子期刊数据库评价的二级指标体系,为科学评价电子期刊数据库奠定层次结构基础.     

网络学术数据库收录JCR学科期刊的实证性研究

以2007年JCR收录的大气科学(气象学)类期刊为例,对网络学术数据库收录的JCR学科期刊进行实证性研究,并根据研究结果,对网络学术数据库进行评价,最后得出相关启示.     

网络参考信息源评价指标体系的构建

论述了网络参考信息源评价指标体系构建的意义与原则,探讨了网络参考信息源评价指标体系的整体构建,建立了网络参考信息源评价指标体系。     

网络教学资源数据库的管理

在网络教学活动中,数据库系统的设计及其管理是关键问题。网络教学数据库的设计,可采取B/S模式、在线学习模式、PHP模式等。网络教学数据库的管理策略,可采取FTP Server和Printer Server的管理策略。资源层管理和管理层体系的构建,也是网络教学数据库管理的重要内容。     

多媒体数据库开发

The paper starts with an introduction to the development process of database technologies. Then, it discusses the techniques and methods used to develop multimedia database. Finally, taking the Information Management System of Graduate Students as an example, it describes the design process of a simple multimedia database.     

基于WinCE的嵌入式数据库研究

鉴于WinCE下硬件资源的匮乏,大型的基于服务的数据库显得累赘而不可取,寻找可嵌入、可配置的小型数据库非常重要。结合实际WinCE开发,研究两种嵌入式数据库的使用并给出各自的优缺点。     

Weak Ties in Networked Communities

Communities with high levels of social capital are likely to have a higher quality of life than communities with low social capital. This is due to the greater ability of such communities to organize and mobilize effectively for collective action because they have high levels of social trust, dense social networks, and well-established norms of mutuality (the major features of social capital). Communities with “bridging” social capital (weak ties across groups) as well as “bonding” social capital (strong ties within groups) are the most effective in organizing for collective action. People who belong to multiple groups act as bridging ties. When people with bridging ties use communication media, such as the Internet, they enhance their capability to educate community members and to organize, as needed, for collective action. This article summarizes evidence from stratified household survey data in Blacksburg, VA, showing that people with weak (bridging) ties across groups have higher levels of community involvement, civic interest, and collective efficacy than people without bridging ties among groups. Moreover, heavy Internet users with bridging ties have higher social engagement, use the Internet for social purposes, and have been attending more local meetings and events since going online than heavy Internet users with no bridging ties. These findings may suggest that the Internet—in the hands of bridging individuals-is a tool for enhancing social relations and information exchange, and for increasing face-to-face interaction, all of which help to build both bonding and bridging social capital in communities.     

Weak Ties in Networked Communities

Communities with high levels of social capital are likely to have a higher quality of life than communities with low social capital. This is due to the greater ability of such communities to organize and mobilize effectively for collective action because they have high levels of social trust, dense social networks, and well-established norms of mutuality (the major features of social capital). Communities with “bridging” social capital (weak ties across groups) as well as “bonding” social capital (strong ties within groups) are the most effective in organizing for collective action. People who belong to multiple groups act as bridging ties. When people with bridging ties use communication media, such as the Internet, they enhance their capability to educate community members and to organize, as needed, for collective action. This article summarizes evidence from stratified household survey data in Blacksburg, VA, showing that people with weak (bridging) ties across groups have higher levels of community involvement, civic interest, and collective efficacy than people without bridging ties among groups. Moreover, heavy Internet users with bridging ties have higher social engagement, use the Internet for social purposes, and have been attending more local meetings and events since going online than heavy Internet users with no bridging ties. These findings may suggest that the Internet—in the hands of bridging individuals–is a tool for enhancing social relations and information exchange, and for increasing face-to-face interaction, all of which help to build both bonding and bridging social capital in communities.     

国内五种引文数据库的比较研究

本文就我国目前出版的五种引文数据库：“中国科学引文数据库”、“中国科技论文与引文数据库”、“中文社会科学引文索引”、“中国学术期刊全文数据库”、“中文科技期刊引文数据库”的数据库内容、数据库检索性能以及各自的优势和不足等几个方面,进行了比较和分析,以便使用者在使用时有一个较为客观的选择。     

网络电子期刊的评价

对网络电子期刊的评价是图书馆甄选电子期刊的重要依据。通过探讨传统评价方法在网络电子期刊评价中的应用，介绍网络电子期刊评价的新标准，从而建立合理的馆藏体系。     

网络信息专业指引库的开发

本文在介绍了两种网络信息导引系统即搜索引擎和专业指引库的基础上,以“DVD专业指引库”的开发为例,重点探讨了专业指引库的开发步骤及其关键技术。     

数据库个性化服务研究

目前许多数据库产品为满足用户的特定信息需求,提升自身的服务功能而致力于数据库个性化服务功能的推出。本文介绍了数据库个性化服务的基本功能和模式,分析了国内几个主要数据库的个性化服务内容,并就增强与完善数据库个性化服务提出了几点建议。     

非一致数据库的查询研究

提出的方法能灵活地进行数据库SQL查询,它可以干扰一系列的约束条件,并且这种方法能够允许用户假定一组约束和查询一起。系统重写这个查询去查找相应的与约束一致的数据。这个重写是SQL,以便能被商业数据库系统有效地优化和执行。使用TPC-H基准的数据和查询比较脏数据多粒度的执行性能,实验显示该方法是可行的。     

主动数据库及其研究现状

The similarities and differences between an active database and a traditional database are expounded. The general model of an active database and the model of the Active Database Management System are discussed. In the light of the deficiencies of the object-oriented database, the paper probes into the superiorities of combining the active database with the object-oriented database. It also discusses the present situation and the development of the active database as well as the problems to be solved.