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1.
Objective
The purpose of this study was to investigate the relative effectiveness of three web-scale discovery (WSD) tools in answering health sciences search queries.Methods
Simple keyword searches, based on topics from six health sciences disciplines, were run at multiple real-world implementations of EBSCO Discovery Service (EDS), Ex Libris''s Primo, and ProQuest''s Summon. Each WSD tool was evaluated in its ability to retrieve relevant results and in its coverage of MEDLINE content.Results
All WSD tools returned between 50%–60% relevant results. Primo returned a higher number of duplicate results than the other 2 WSD products. Summon results were more relevant when search terms were automatically mapped to controlled vocabulary. EDS indexed the largest number of MEDLINE citations, followed closely by Summon. Additionally, keyword searches in all 3 WSD tools retrieved relevant material that was not found with precision (Medical Subject Headings) searches in MEDLINE.Conclusions
None of the 3 WSD products studied was overwhelmingly more effective in returning relevant results. While difficult to place the figure of 50%–60% relevance in context, it implies a strong likelihood that the average user would be able to find satisfactory sources on the first page of search results using a rudimentary keyword search. The discovery of additional relevant material beyond that retrieved from MEDLINE indicates WSD tools'' value as a supplement to traditional resources for health sciences researchers. 相似文献2.
李欣 《株洲师范高等专科学校学报》2007,12(2):63-65
随着互联网的不断发展，企业对跨平台的系统需求越来越迫切，而新的网络应用技术构架Web Services技术的出现，为企业应用集成的发展提供了崭新的模式．通过介绍Web Services的主要技术及其应用构架，并结合具体的实例阐述了Web Services构架技术在企业上的应用及前景． 相似文献
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刘行仕 《咸阳师范学院学报》2002,17(3):55-59
大洋洲是在地理大发现的白银时代才呈现在欧洲人面前的，1788年和1840年分别是澳大利亚和新西兰被英国残民的开始时间，与此同时也逐渐开始了近代化，由于地处南半球，移民的奋斗等原因，殖民化与近代化同步发展，另外，新西兰的毛利人进行过维护土地权的战争，而澳大利亚的土几乎未作过积极的反抗，19世纪后期，这两个国家都有过社会改革的实验，加之移民劳动的努力，为20世纪初自治领的建立奠定了基础，此后两国实际走上了独立的道路并在亚太地区发挥着重大作用。 相似文献
4.
Four standards and best practices recently released or currently underway at the National Information Standards Organization were presented: Knowledge Bases and Related Tools, Presentation and Identification of E-Journals, Open Discovery Initiative, and Open Access Metadata Indicators. Basics outlining the creation work and deliverables were shared for each project. Applicability of these standards and best practices for different stakeholders of the information community were discussed. 相似文献
5.
针对WEB环境下图书相关文献资源的多样性和平台的异构性,使得读者对资源的获取不方便。提出基于预索引数据仓储的图书相关资源发现和获取方法,来集成各种类型的图书文献资源。对预索引元数据仓储模型、元数据的自动获取、对象的链接和用户体验等技术深入分析,并采用TRS信息技术来构建图书相关文献资源发现与获取系统。 相似文献
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发现学习理论在网球发球教学中的应用 总被引：6，自引：0，他引：6
通过对布鲁纳的发现学习理论具体内容的说明，作者在网球发球的实际教学过程中，应用它来解决实际中的一些问题。通过激发学生的内部动机，鼓励学生在学习中自我发现，从而使他们获取对发球动作的完整信息，较为牢固地掌握了发球动作。这对网球其他技术的教学也具有同样的指导作用。 相似文献
8.
AbstractThe Program for Cooperative Cataloging (PCC) has formal relationships with the Library of Congress (LC), Share-VDE, and Linked Data for Production Phase 2 (LD4P2) for work on Bibliographic Framework (BIBFRAME), and PCC institutions have been very active in the exploration of MARC to BIBFRAME conversion processes. This article will review the involvement of PCC in the development of BIBFRAME and examine the work of LC, Share-VDE, and LD4P2 on MARC to BIBFRAME conversion. It will conclude with a discussion of areas for further exploration by the PCC leading up to the creation of PCC conversion specifications and PCC BIBFRAME data. 相似文献
9.
陈平 《温州大学学报(社会科学版)》2008,21(6)
有些学者对“发明四声”说法提出批评,认为汉语的＂四声＂不是任何人所能发明创造的。然而“发明四声”又被语言学界许多学者所普遍接受并继续使用。这对矛盾是由“发明”的古今词义的不同造成的：“发明”在古汉语中是表“发现”义,在现代则是表“创造”义。因而,在古代“发明四声”说法是正确的,现代学者继续使用“发明四声”则是由于仿古文写作和习惯用法的原因。 相似文献
10.
冷枝楠 《黄冈职业技术学院学报》2007,9(2):26-28
本文论述了学生学习动机培养对提高高职学生素质教育实效性的重要作用,分析了高职学生学习动机缺乏的原因,运用动机变化规律理论对培养高职学生学习动机的途径和方法进行了探讨。 相似文献