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E Diane Johnson Paul E Pancoast Joyce A Mitchell Chi-Ren Shyu 《Journal of the Medical Library Association》2004,92(4):438-444
PURPOSE: This study describes the system architecture and user acceptance of a suite of programs that deliver information about newly updated library resources to clinicians' personal digital assistants (PDAs). DESCRIPTION: Participants received headlines delivered to their PDAs alerting them to new books, National Guideline Clearinghouse guidelines, Cochrane Reviews, and National Institutes of Health (NIH) Clinical Alerts, as well as updated content in UpToDate, Harrison's Online, Scientific American Medicine, and Clinical Evidence. Participants could request additional information for any of the headlines, and the information was delivered via e-mail during their next synchronization. Participants completed a survey at the conclusion of the study to gauge their opinions about the service. RESULTS/OUTCOME: Of the 816 headlines delivered to the 16 study participants' PDAs during the project, Scientific American Medicine generated the highest proportion of headline requests at 35%. Most users of the PDA Alerts software reported that they learned about new medical developments sooner than they otherwise would have, and half reported that they learned about developments that they would not have heard about at all. While some users liked the PDA platform for receiving headlines, it seemed that a Web database that allowed tailored searches and alerts could be configured to satisfy both PDA-oriented and e-mail-oriented users. 相似文献
33.
Paul J Bracke 《Journal of the Medical Library Association》2004,92(4):421-428
OBJECTIVES: This paper explores the potential of multinomial logistic regression analysis to perform Web usage mining for an academic health sciences library Website. METHODS: Usage of database-driven resource gateway pages was logged for a six-month period, including information about users' network addresses, referring uniform resource locators (URLs), and types of resource accessed. RESULTS: It was found that referring URL did vary significantly by two factors: whether a user was on-campus and what type of resource was accessed. CONCLUSIONS: Although the data available for analysis are limited by the nature of the Web and concerns for privacy, this method demonstrates the potential for gaining insight into Web usage that supplements Web log analysis. It can be used to improve the design of static and dynamic Websites today and could be used in the design of more advanced Web systems in the future. 相似文献
34.
The Cross-Language Evaluation Forum has encouraged research in text retrieval methods for numerous European languages and has developed durable test suites that allow language-specific techniques to be investigated and compared. The labor associated with crafting a retrieval system that takes advantage of sophisticated linguistic methods is daunting. We examine whether language-neutral methods can achieve accuracy comparable to language-specific methods with less concomitant software complexity. Using the CLEF 2002 test set we demonstrate empirically how overlapping character n-gram tokenization can provide retrieval accuracy that rivals the best current language-specific approaches for European languages. We show that n = 4 is a good choice for those languages, and document the increased storage and time requirements of the technique. We report on the benefits of and challenges posed by n-grams, and explain peculiarities attendant to bilingual retrieval. Our findings demonstrate clearly that accuracy using n-gram indexing rivals or exceeds accuracy using unnormalized words, for both monolingual and bilingual retrieval. 相似文献
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This article reports on a large‐scale international survey of authors' perception and experience of the journals system conducted by ciber in association with National Opinion Polls (NOP). It explores the factors that inform authors' decisions where to publish and, in particular, which groups of readers they perceive to be most important. It probes readership behaviour and the values that underlie authors' attitudes towards copyright and emerging business models, notably open access. It is concluded that many aspects of author behaviour are highly conservative and that a significant shift towards open access is, in the short to medium term, highly unlikely. 相似文献
36.
基于信息融合的档案知识服务,是借助信息融合的理念和技术,对档案信息资源、用户需求信息等进行综合处理与协同利用,推动档案信息资源在数据层面的关联和知识层面的重构,实现面向用户需求的档案知识发现和知识服务的过程.论文构建了由一个目标、两种资源、三个模块、四个环节构成的基于信息融合的档案知识服务框架,并从多源信息获取、信息综合处理、信息融合和档案知识服务方面,探讨了基于信息融合的档案知识服务实现流程. 相似文献
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This paper adopts the academic tool of discourse analysis to examine the ‘new visual turn’ of the Communist Party of China’s propaganda work since the 18th CPC National Congress when Xi Jinping was inaugurated as the leader of Chinese Communists. A thorough review of the new visual means the Party uses for photojournalism, TV news, animated cartoons and online promotional videos points to three developments markedly different from traditional discursive strategies: a full embrace of Confucian ethics, articulation of the Internet-based popular culture and subcultures, and an effort to fortify Xi’s personal authority as a political idol. The paper concludes that the ‘new visual turn’ of CPC propaganda after the 18th Party Congress suggests that the Communist discourse has evolved to a new stage where sophisticated manipulation of sleek technological tools substantiates a rigorous, dynamic CPC discursive system more at ease with itself and more powerful than ever in shaping the mainstream political culture in China. 相似文献
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期刊评价中文献老化理论视角的研究相对薄弱。本文探究生存分析法在学术期刊评价上的应用,在理论上
克服了因领域差异导致的壁垒,并选取CSTPCD中30家中文物理学科期刊作为样本数据集进行实证研究。通过对论文
被引时序数据进行分析,研究物理学科文献老化规律,并选取样本期刊进行对比分析,以探究期刊评价的新思路。 相似文献
40.
为了研究科研成果高水平论文产出状况,了解中日印韩四国近五年在国际顶级期刊(Cell、Nature、Science,CNS)论文产出以及国际地位变化,利用Web of Science统计2011—2015年中日印韩在CNS论文产出情况和国际地位变化.研究发现:我国与日本并驾齐驱,并大有赶超日本的趋势,二者约占四国论文总数的80%;印度和韩国仅占20%.国际排名则中日较为靠前,期间中国增长最为迅速,印度和韩国保持相对稳定,日本增长最低.我国2011—2015年CNS论文产出增长势头明显,相关系数呈正相关,并在2015年全面超越日本并进一步拉开差距,在四国当中首屈一指,但以后可能进入一种新常态模式,为此提出两点建议期望能保持高质量论文中高速增长. 相似文献