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1.
A qualitative study of the impact of electronic journals on the information behavior of academic researchers at Catalan universities shows that academic researchers now read more, and more widely. However, their reading is becoming more superficial; they are compelled to improve their discrimination skills in order to decide what to read in more depth. The electronic accessibility of journals means that researchers now make fewer library visits. Web browsing and table of contents (TOC) e-mail alerts are replacing physical browsing, and searching is a very popular option for keeping up to date with developments. Internet search engines, especially Google and Google Scholar, are becoming important sources of information for researchers. However, they face problems in managing their personal scientific information. 相似文献
2.
Jessica Bates Paul Best Janice McQuilkin Brian Taylor 《The Journal of Academic Librarianship》2017,43(1):8-17
The availability of web search engines offers opportunities in addition to those provided by bibliographic databases for identifying academic literature, but their usefulness for retrieving research is uncertain. A rigorous literature search was undertaken to investigate whether web search engines might replace bibliographic databases, using empirical research in health and social care as a case study. Eight databases and five web search engines were searched between 20 July and 6 August 2015. Sixteen unique studies which compared at least one database with at least one web search engine were examined, as well as drawing lessons from the authors’ own search process. Web search engines were limited in that the searcher cannot be certain that the principles of Boolean logic apply and they were more limited than bibliographic databases in their functions, such as exporting abstracts. Recommendations are made for improving the rigour and quality of reporting studies of academic literature searching. 相似文献
3.
《Library & information science research》2023,45(1):101222
Searches with learning intent typically require the users to interact with the searching environment and perform knowledge acquisition features such as scan, read, and process the online content to fulfill their information needs. To capture indicators from searching behaviors that could account for the knowledge gained during a Web search, a qualitative study was performed using the Concurrent Think-Aloud protocol to observe the mechanisms of transfer and map knowledge flows during 78 search sessions. Findings indicate evidence of transfer of learning in the form of sixteen online information searching strategy indicators. This research aids the understanding of how knowledge is gained during search sessions and how to identify behaviors that could indicate that learning has occurred, which could be used to represent knowledge gain on Web search engines. In this way, it can aid search engines to become not only better tools of searching, but also tools of learning. 相似文献
4.
Students turn to a variety of sources when searching for information for their academic assignments. This study uses findings from a survey given to 151 Israeli students attending a university in Israel. A questionnaire comprising 12 questions was administered regarding their information needs, information behavior, and difficulties in searching and writing an academic assignment. A special emphasis of the study was on the multicultural environment of the Israeli students and its effect on their information behavior. Results show that there is a significant difference between native language groups with regard to the use of search engines, the use of library services, and in the patterns of conducting their academic assignment. 相似文献
5.
几种搜索引擎中Image搜索的比较 总被引：4，自引：0，他引：4
李爱国 《现代图书情报技术》2002,18(5):35-36
随着用户对网上图像搜索要求的不断增长，各种基于Web的图像搜索引擎应运而生。但是各种不同的图像搜索引擎在搜索的响应时间、检索出的图像的数量、准确性、检索结果的排序等方面存在着较大的差异。本文首先就图像搜索模式作一简单的叙述，然后对搜索引擎Google、Excite、Yahoo、Ixqiuck的Image Search进行比较。 相似文献
6.
利用搜索引擎进行高质量情报检索 总被引：16，自引：0，他引：16
伍宪 《现代图书情报技术》2000,16(6):51-53
简述了Internet 上与情报源质量相关的问题, 分析了Internet 主要检索工具——搜索引擎的分类特点、工作原理及优缺点, 阐述了利用搜索引擎等工具进行高质量情报检索的步骤。 相似文献
7.
Jeffrey Beall 《Library Collections, Acquisitions, and Technical Services》2010,34(2-3):74-82
Geographical research often involves searching for place names in full-text resources, such as digitized books. Place names often have variants, resulting in many different names for a single geographical place, a problem that can lead to missed results in full-text searches for place names. The problem occurs because full-text search engines merely match words in the search box with words in online documents, leaving place–name variants unsearched. This paper describes how relevant resources can be missed due to this problem and describes the different sources of place–name variation. Finally, the paper describes some solutions to the place–name variation problem in full-text searching. 相似文献
8.
网络时代搜索引擎带来的社会问题 总被引：1，自引：0，他引：1
针对搜索引擎面临各种特色服务所引起的各种社会问题,从搜索引擎运营商的利益角度,论述这些问题所产生的负面影响,并在展望搜索引擎运营商市场前景的基础上,就如何完善搜索引擎检索机制提出建议。 相似文献
9.
常用中文搜索引擎检索性能比较分析 总被引：4，自引：0，他引：4
从几种主要的中搜索引擎几年来的市场占有份额的变化出发，选择检索性能为比较切入点。以代表检索性能的数据库、检索结果、用户界面和搜索技巧为评价标准，对常用搜索引擎进行数据统计分析，找出专注于搜索主业的google和百度最成功的原因。 相似文献
10.
垂直搜索引擎应用中的若干策略探讨*——以12580餐饮垂直搜索为例 总被引：2，自引：0，他引：2
首先概述垂直搜索引擎的有关研究,结合通用搜索引擎分析垂直搜索引擎的一些特点和应用,然后结合实际的开发应用从提高查准率、提高查询速度、提高信息采集效率、控制信息采集质量等角度进行分析和探讨,在实例探讨中结合12580网络信息采集的餐饮垂直搜索原型系统提出信息采集、信息更新、信息抽取等实际应用领域中的若干策略。 相似文献
11.
关于搜索引擎的几个理论问题的综述 总被引：6，自引：0，他引：6
建构搜索引擎的理论体系有助于更系统、更科学地研究搜索引擎的应用实践。本文对近几年来搜索引擎的分类、检索功能、存在问题、发展趋势等相关理论作了概述。 相似文献
12.
面向跨领域海量信息资源的元搜索引擎研究 总被引：1，自引：0，他引：1
跨领域海量信息资源搜索是从事交叉学科和跨学科研究的重要前提.元搜索引擎不仅可以避免独立搜索引擎覆盖面较低的局限性,而且还可以充分发挥不同独立搜索引擎之间的互补性.基于元搜索引擎的跨领域海量信息资源搜索需要解决四个关键问题,即协助用户准确表达搜索意图、消除检索词的"一词多义"和"多词一义"现象、设计自动调整检索范围的机制以及发挥用户价值.面向跨领域海量信息资源的元搜索引擎采用多领域本体、语义web和web2.O技术,较好地解决了元搜索引擎的上述四个关键问题.相对于传统元搜索引擎,面向跨领域海量信息资源的元搜索引擎在基本思路、框架设计、流程设计、关键技术四个方面发生了重要变化. 相似文献
13.
Carol A. Leibiger 《Behavioral & Social Sciences Librarian》2013,32(4):187-222
Googlitis, the overreliance on search engines for research and the resulting development of poor searching skills, is a recognized problem among today's students. Google is not an effective research tool because, in addition to encouraging keyword searching at the expense of more powerful subject searching, it only accesses the Surface Web and is driven by advertising. American higher education unwittingly fosters the use of search engines in research by emphasizing results rather than process. Academic librarians emulate teaching faculty in their reliance on lectures, and their course-related instruction is limited in its effectiveness because it is constrained to one-shot, lecture-driven sessions. A more effective way to teach research is to collaborate with faculty via problem-based and project-oriented learning tasks that incorporate authentic discipline-specific information finding and critical thinking into assignments. 相似文献
14.
Heidi Senior Kerry Wu Diane M. Martin Margaret Mellinger 《Journal of Business & Finance Librarianship》2013,18(3):202-229
Revisiting a study performed 30 years ago, researchers at three institutions surveyed undergraduate and graduate students in marketing courses to determine their attitudes toward and knowledge of library services and collections. Results found that 21st-century students are more likely to believe in the importance of library research, to have had library instruction, and to use Web sites and Internet search engines to begin their research. However, they are less likely to read business periodicals. Faced with a list of information sources, they are generally able to pick out a useful resource, although not always the most efficient. Implications for library service to business students are discussed. 相似文献
15.
中文搜索引擎用户检索式特征探析 总被引：2，自引：0，他引：2
这项研究采集了百度、一搜、中搜和搜狗四家中文搜索引擎的七千余项检索式,分别从词汇出现频次、词汇量、类别等方面分析了中文搜索引擎用户的检索行为特征,对开展用户教育和搜索服务设计都有一定的实用价值。 相似文献
16.
Rebecca B. French 《Journal of Web Librarianship》2019,13(2):156-197
Information about faculty and their publications can be found in library databases such as the Library of Congress Name Authority File, VIAF, WorldCat, and institutional repositories; in identifier registries such as ORCID and ISNI; and on academic social networking sites such as Academia, Google Scholar, and ResearchGate, but the way search engines use such identifiers and profiles is unclear. Therefore, researchers at a large comprehensive university conducted several rounds of web searching before and after the creation and modification of faculty authority records. The sample consisted of 24 faculty and the 35 publications associated with their authorities. The researchers searched for the faculty and their publications on the social networking and identity websites directly, and then used Google, Bing, and Google Scholar to record which of the faculty members’ profiles and publications were found within the top 50 results. Faculty with more profiles were more visible in search engine results, and faculty with authority records ranked more highly in Google. Results related to publication discovery and ranking were more inconclusive, but revealed clear differences between search tools. The implications of this exploratory research can support educational efforts about academic identities and scholarly profiles, begin a research agenda, and inform methodological development surrounding the influence of identity records and academic social networking profiles on web visibility. 相似文献
17.
Atlas MC 《Medical reference services quarterly》2001,20(1):11-25
Physicians are becoming aware of the World Wide Web as a resource for medical information. In spring 1999, first-year students at the University of Louisville's School of Medicine were given an assignment to review and evaluate Internet search engines and directories, medicine-specific search engines and meta lists, and health-related Web sites. Students found that general search engines were easier to learn and use and produced better results than either meta medical sites or medicine-specific search engines. Students were very severe in judging the quality of health-related Web sites. Our students' impressions are compared to those of physicians in similar studies. Solutions to the problems of searching the Web for health information are reviewed. 相似文献
18.
基于文档聚类的Web辅助浏览研究 总被引：2，自引：0，他引：2
目前的搜索引擎在方便人们查询的同时也存在不足 ,由于它们并非面向某个特定用户服务 ,所以并不能反映用户的个性化需求 ,查询得到的信息往往还是有大量的冗余。为此本文提出了一种基于文档聚类的网络辅助浏览技术。首先给出了模糊概念图的模型来描述词语间的关系 ,然后将Web文档转化为矢量文档表示 ,利用基于K Means聚类方法对矢量文档进行聚类 ,通过确认最终抽取出用户兴趣模式 ,从而辅助用户实现个性化搜索 相似文献
19.
Librarians who teach one-shot library instruction classes (one-time, one- to three-hour classes to students who are assumed to be novice researchers) are often torn between two pedagogic approaches: a “critical mass” pedagogy emphasizing a minimum amount of databases that must be introduced with little time for student searching, and a “use-oriented” pedagogy emphasizing the introduction of one or two databases, with the instructor providing adequate time for the student to hone their search skills through in class work time that provides for interaction with the librarian. Drawing from the learning theory of Brian Cambourne, we compare the two pedagogic approaches and argue that a use-oriented approach is a better match to Cambourne's Conditions of Learning, but that without certain preparations of and expectations from the student, librarians will struggle with both approaches in these one-shot library instruction sessions. 相似文献
20.
The literature shows that students are more likely to begin their search via Google, as it is perceived to be easier and more accessible than other databases or publisher platforms. The invisible web, specifically publisher platforms, is sometimes too difficult for students to access; there are also suggestions that Google Scholar in particular may outperform other paid-for databases. The ease of access and the somewhat misguided notion that Google Scholar has more reliable information than that provided by libraries makes search engines all the more attractive. This culture of searching using a single search box is reflected in the increase in the number of libraries opting for single resource discovery systems such as Summon or Primo, which use a single search covering all the library holdings. The findings suggest that whilst Google Scholar can perform well in some circumstances, it performed only moderately well when compared with LISTA and Summon – the single resource discovery system tested. It was the least successful resource in terms of precision when compared with LISTA, Summon, Emerald and Sage. However, the simplicity of search engines begs the question: will databases and publisher platforms become obsolete? The study concludes that subject specific databases are more effective than search engines, but the complexity of accessing the invisible web is hindering their popularity. 相似文献