开放数字环境下的参考文献链接

介绍开放式分布式数字信息环境中参考文献链接机制的基本概念和实现框架 ,并具体讨论相关的实施技术和范例系统。     

数字资源整合检索协议研究

简要地论述了数字资源整合检索的必要性、模式、以及联接方式和联接方法，并详细地介绍了三种数字资源整合检索的协议：Z39．50、OAI、OpenuRL。     

OpenURL框架结构分析

OpenURL作为一种开放式链接框架结构，与传统信息链接框架相比，增加了许多新的功能，成为信息资源整合的重要工具，受到图书情报界的密切关注，也将被美国全国信息标准组织(NISO)所接收。本文在分析OpenURL框架结构和运行机制的基础上，讨论其在信息资源整合中的使用。     

Integrating Print Holdings into SFX

Abstract

Popular for their ability to provide full-text linking, OpenURL link servers, such as SFX, can also interface with online catalogs and interlibrary loan modules, giving library users the ability to locate articles in print or request items not owned by their local institution. This article examines four different approaches to integrating print holding information into SFX, detailing the advantages and drawbacks of each approach. The ultimate goal is to provide end-users with comprehensive, dynamic access to the full range of core library services, including online full-text, print materials, and interlibrary loan.     

Improving OpenURL Linking

Ever since OpenURL linking was introduced in 2000 by Herbert van de Sompel the link resolver has played an important role in providing users with access to the online resources they have rights to. From the start, one of the criticisms of OpenURL linking has been that it is not 100% successful—sometimes the user is presented with a link to full text, but that link fails. In 2010 a new National Information Standards Organization (NISO) workgroup was created to tackle the issue of OpenURL quality. This column will discuss this NISO initiative and look in detail at the proposed “Completeness Index” that promises a means of measuring the quality of OpenURLs being submitted by various content providers. The article will also discuss how some OpenURL quality issues may be more perception than reality and how librarians can configure their links and link resolvers to overcome these negative perceptions.     

OpenURL and SFX Linking

Abstract

It is only a few short years since the early academic research led by Herbert Van de Sompel at Ghent University in Belgium that resulted in the formulation of the OpenURL standard and the development of the SFX link server. These complementary components have revolutionized linking for libraries, putting control for linking in the hands of the librarian.

This paper considers briefly the early linking initiatives, explains the purpose and structure of the OpenURL and the role of linking components-the sources, targets, and the link server, with a focus on the SFX link server.     

浏览器扩展组件在图书馆的应用

向用户提供浏览器扩展组件是图书馆方便用户利用图书馆的方式之一。用户通过这种方式,可以不必中断在互联网上正进行的科研过程,只需在当前浏览的窗口上点击一下鼠标,就可以检索和利用图书馆的资源。这种采用客户端技术加强图书馆服务能力的做法在国外已有较普遍的应用,也是目前图书馆将那些被互联网拉走的用户拉回到图书馆的举措之一。该文将浏览器扩展组件在图书馆的应用情况进行了汇总,还对北京师范大学图书馆采用LibX的应用情况进行了概要描述,该馆的LibX突破了只有SFX的源资源才能生成SFX链接的限制,将链接服务扩展到任意页面。LibX将读者的互联网阅读过程和图书馆OPAC检索、电子期刊检索、OpenURL链接服务以及WorldCatxISBN服务等多种功能和服务整合在一起,提高了读者对图书馆资源的检索效率和水平。     

OpenURL及其应用

OpenURL作为一种开放式链接框架结构，不仅适用于信息源本身的整合，而且可将多种信息源和多种服务整合在一起，提供上下文相关的服务。本文在分析OpenURL框架结构、语法、上下文对象描述与传输的基础上，讨论其在信息资源整合中的应用。     

基于分布式知识库的开放服务链接系统设计与实现

OpenURL框架提供了新的描述资源的途径.OpenURL链接解析器使资源与服务无缝集成.当前支持解析器工作的后台知识库都是集中式的,或者委托第三方代理管理与维护.本文首先简要介绍开放链接标准、开放链接系统提供的扩展服务形式、知识库的总体结构,然后详细阐述链接解析器的工作流程及开放链接系统架构,并开发出开放链接服务系统原型.在分析开放、分布式环境下链接解析器工作原理的基础上,提出并实现了分布式知识库的构建与维护.最后给出了实例说明.