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21.
Students and scholars can take full advantage of Open Access journals only if libraries make them available through mechanisms that are familiar to patrons. This study examines the extent to which American liberal arts colleges have provided access to Open Access journals through their journal title lists (Serials Solutions, Ex Libris, etc.) and their online public access catalogs (OPACs). While 57 percent of the colleges provide access to at least 90 percent of the journals in our sample, 20 percent of the colleges provide access to fewer than 20 percent of the journals. Large and high-impact journals are especially likely to appear in libraries' catalogs and journal lists. There is no systematic trend by publication fee status or country of publication, however. The study concludes with a discussion of the strategies libraries can use to select Open Access journals and add them to their collections. 相似文献
22.
本文以互联网FTP目录树为对象,从大众构造的层次式结构中揭示管理网络资源时的组织规律。通过考察44,972个软件资源及其在目录树中的位置,得到如下认识:①对于用户查找、浏览资源来说,资源存放在深度为2或3层较适合。②当要管理的资源数量在200以内时,人们可容忍平均1个目录中包含10个左右的软件资源;当资源数量更大时,人们可容忍平均1个目录中包含15个左右的软件资源。③在使用层次式组织结构时,人们会对结构的深度有一个习惯上限,目录结构平均深度一般不多于6层。④人们考虑组织结构时,会在"分类体系复杂度"和"分类精细度"之间权衡,在资源量增多时,尽量保证扁形结构。本文揭示了采用层次方式组织资源时的一些共性,有助于设计更贴近大众习惯的网络资源组织与导航系统,并对标签聚类等从扁平型信息组织方式中提取类目层次的研究工作提供依据。 相似文献
23.
本文分析了OracleNet网络的体系结构,提出了基于目录服务器的OracleNet网络应用解决方案及具体实施方法。 相似文献
24.
信息共享是良好的个性化服务的基础，而标准化与规范化则是信息全面共享的的前提，本文提出建立相应的信息共享服务标准的重要性，详细论述了标准化与规范化的信息共享服务，并在此基础上初步完成了标准化与规范化信息共享服务的框架结构设计。 相似文献
25.
吴宏 《喀什师范学院学报》2004,25(6):76-77
从心理认知的角度出发，分析了初中生阅读理解活动中存在问题的原因以及提高学生数学阅读理解能力的指导策略． 相似文献
26.
刘雄 《深圳信息职业技术学院学报》2005,3(4):34-40
本文针对邮件服务系统中邮局协议（POP）服务可扩展性的需求，提出了解决方案，该方案使得系统能够灵活扩展，并能均衡负载以避免性能瓶颈问题；介绍了系统的工作原理，阐述了系统的实现机制，基于qmail系统建立了测试环境并进行了性能测试，测试数据说明系统具有高性能。 相似文献
27.
硬盘空间配额管理的设计与实现 总被引：1，自引：0，他引：1
在Windows2000系统下利用WMI、LDAP技术和DiskQuota控件编程技术，把配额管理和“活动目录”下的用户管理、目录管理结合在一起，实现硬盘空间配额管理的技术和方法。 相似文献
28.
We present a study to develop an improved understanding of symbolic links in web directories. A symbolic link is a hyperlink which makes a directed connection from a webpage along one path through a directory to a page along another path. While symbolic links are ubiquitous in web directories such as Yahoo!, they are under-studied and, as a result, their uses are poorly understood. A cursory analysis of symbolic links reveals multiple uses: to provide navigational shortcuts deeper into a directory, backlinks to more general categories, and multiclassification. We investigated these uses in the Open Directory Project (ODP), the largest, most comprehensive, and most widely distributed human-compiled taxonomy of links to websites, which makes extensive use of symbolic links. The results reveal that while symbolic links in ODP are used primarily for multiclassification, only few multiclassification links actually span top- and second-level categories. This indicates that most symbolic links in ODP are used to create multiclassification between topics which are nested more than two levels deep and suggests that there may be multiple uses of multiclassification links. We also situate symbolic links vis à vis other semantic and structural link types from hypermedia. We anticipate that the results and relationships identified and discussed in this paper will provide a foundation for (1) users for understanding the usages of symbolic links in a directory, (2) designers to employ symbolic links more effectively when building and maintaining directories and for crafting user interfaces to them, and (3) information retrieval researchers for further study of symbolic links in web directories. 相似文献
29.
宋文燕 《图书馆理论与实践》2022,(1)
文章阐述了开放获取学术资源目录(ROAD)的背景、资源建设机制、实现机制和关联数据功能,指出ROAD作为一个识别、选择关联开放获取学术资源的方案或工具,要在为用户提供的服务方面发挥更积极的作用。最后,对提高我国连续性资源开放获取与关联的世界影响力提出几点建议。 相似文献
30.
活动目录服务接口（ADSI）是Microsoft推出的一项用于开发客户方的目录服务应用系统的技术。本文介绍了该技术及其功能模型，并在以动态服务页面（ASP）实现的网站中，使用ADSI技术实现基于LDAP服务器的用户认证。 相似文献