共查询到20条相似文献，搜索用时 500 毫秒
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[目的/意义] 鉴于Scopus、Web of Science(WoS)与Google Scholar(GS)3个单源数据库在计量学研究和应用中的局限,发展综合利用多源数据信息的复合型引文分析方法可为计量学分析提供一种补充思路。[方法/过程] 以期刊总被引次数这一底层参量为切入点,用图书情报学国际期刊2009-2014年数据为实证基础,尝试对多源数据复合引文算术均值、几何均值及调和均值方法进行比较讨论。[结果/结论] 结果发现,算术均值、几何均值和调和均值虽有差异,但亦有线性关联,应用中可选其一;累计算术均值、几何均值和调和均值与期刊数之间未证实存在布拉德福定律,但在期刊数量等同的三分区内,累计被引均值满足形如n2:n:1的经验分布;多源数据复合引文与单个数据库引文的期刊排名差异呈现"两端小、中间大"之现象;期刊的算术均值排名与GS排名结果更接近,几何均值排名则与Scopus相似度更高,而调和均值与WoS的排名差异最小。 相似文献
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引文扩散的动态过程更为全面地展现了科学论文的质量与影响。本文从引文扩散的视角出发,在传统引文指标基础上引入altmetrics,试图从论文学术影响力与社会影响力两个方面综合探究不同引文扩散模式下论文的影响力情况及各指标间的相关性。研究结果发现,规则型、持续型引文扩散模式下,altmetrics与引用呈正相关关系,同时具有高学术影响力和社会影响力;不规则引文扩散模式下,引用与社交媒体传播量不具有相关性,高社会影响力并不总代表着高学术影响力;文献发表早期,altmetrics对引用具有推动和促进作用。本文从扩散视角结合altmetrics对不同引文扩散模式论文影响力进行分析,为科学研究成果影响力评价构建多维度指标、提升学术影响力提供了借鉴参考。 相似文献
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[目的/意义] 构建多维指标的综合影响力评价模型,为不同层次挖掘高价值文献提供新途径。[方法/过程] 选取临床神经病学、化学与物理、地球科学作为自然科学的代表学科,信息科学与图书馆学、经济学、教育研究作为社会科学的代表学科,在Web of Science核心合集中收集引文指标数据,在Altmetric.com平台中收集Altmetrics计量指标数据,通过指标覆盖率和指标间相关性进行指标筛选,然后利用主成分分析方法建立不同学科的论文综合影响力指标模型并对比分析。[结果/结论] 不同学科的差异使论文影响力评价模型采用的指标有所区别,自然科学和社会科学论文影响力评价模型中共同保留的指标为被引频次、Mendeley、Blogs。在论文综合影响力评价中,学术影响力依然占据主导地位,社会影响力的测评研究发展迅速,两者结合的定量评价能挖掘出综合影响力较高的文献。 相似文献
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[目的/意义] 为探索图书的老化速度与引文特征,更客观地评价图书的学术价值和利用规律。[方法/过程] 对汤森路透WoS平台中图书引文索引（Book Citation Index）中2012-2014年间的图书情报学学科图书的引文数据进行引用半衰期、被引半衰期的计量,并与WoS中该学科的期刊引文半衰期、被引半衰期做分析比较。[结果/结论] 对比结果显示,该学科图书引用半衰期大于期刊引用半衰期,图书被引半衰期要小于期刊被引半衰期,并从图书的引文和被引规律分析造成这种差异的原因。 相似文献
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学术文献引文推荐研究进展 总被引：1，自引：0，他引：1
[目的/意义]学术文献引文推荐是指对于给定的学术文献,自动化地为其推荐合适的引文和参考文献。借助于引文推荐,用户可以在一定程度上提高撰写学术文献的效率,降低对重要相关文献的漏引。[方法/过程]分析国内外引文推荐研究的最新进展,阐述引文推荐问题的演化过程,从局部引文推荐和全局引文推荐等方面对引文推荐进行梳理,重点归纳文档相似性、主题模型、翻译模型、协同过滤和混合推荐等5种引文推荐常用方法,并总结引文推荐常用数据集和测评方法。[结果/结论]已有引文推荐研究的主要问题在于未考虑用户偏好的动态变化性及研究领域的综合性,在用户研究和实际应用方面仍有所欠缺;未来引文推荐的研究可运用语义化表达方法和自然语言生成技术,从基于上下文的引文推荐和跨语言引文推荐等方面进行展开。 相似文献
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[目的/意义] 为了解我国标准文献的学术影响力, 以为标准文献的利用提供参考, 从标准文献的角度出发, 分析其被引证特征。[方法/过程] 选择中国引文数据库中1994-2013年标准类引文数据, 采用文献计量的方法, 从标准引文总量、篇均标准引文量等方面分析标准文献的总体被引用情况和学科分布情况。[结果/结论] 标准引文量和篇均标准引文量占引文总量比例很小;各学科标准引文量差异较大, 工科和医科对标准文献的引用较多;标准引文数量和被引频次较高的专题集中于自然科学;大部分社会学科标准引用量为零;标准引文的半衰期整体上较长, 老化速度较慢。 相似文献
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引文起飞是文献被广泛采纳的重要信号,引文起飞的分布规律研究对解释引文动态进程具有重要意义,为文献科学评价提供新视角。本研究以中国社会科学引文索引（Chinese Social Sciences Citation Index,CSSCI）数据库1998—2018年的引文数据为研究对象,在对引文起飞识别基础上进行统计分析、对比分析及分布模型拟合,较为全面地揭示了引文起飞分布规律。本研究发现,我国人文社会科学文献大多仅存在一次起飞现象,主要分布在发表后的0～3年,且首次被引往往伴随着引文起飞;引文起飞论文数比例分布符合指数分布规律,拟合系数β可以判断文献引文起飞分布的集中离散情况;不同学科引文起飞分布存在差异,不同被引频次的引文起飞指数分布模型进一步解释了文献被引的内在机制。引文起飞学科分布差异可为知识分类提供参考,本研究的相关结论也可为建立新的科学评价指标提供思路。 相似文献
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[目的/意义]大数据环境下,科学数据管理研究具有重要的理论和现实意义。对科学数据管理研究脉络进行可视化分析,可以为我国该主题研究提供参考与借鉴。[方法/过程]基于WoS和Google Scholar,利用Citespace、Ucinet、TDA等分析工具,探析国际学术界科学数据管理研究发展的演进过程,全面揭示科学数据管理研究的历史、现状和发展方向。[结果/结论]从时间分布图谱、空间分布图谱、主题演进图谱和知识基础图谱4个维度反映科学数据管理的研究现状,并结合国内相关研究及发展状况提出相关建议。 相似文献
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伴随数据论文影响力的凸显,数据计量逐渐兴起。本文基于数据计量,融合多维度、多指标综合评价数据论文的影响力。首先,本文通过信息传播模式分析数据论文影响力的产生机制,解析出数据论文影响力可以划分为潜在影响力、学术影响力和社会影响力三个维度。其次,融合Altmetrics与引文分析甄选指标构建数据论文影响力评价体系。最后,利用相关性分析以及三维空间差异性分析解构数据论文影响力评价结果。研究结果表明,三维度影响力反映出数据论文综合影响力,三者相互补充与促进。同时,数据论文应在整体上促进评审机制、引用机制和激励机制的针对性发展,在内部促进数据论文质量、内容、逻辑和时效的优化。 相似文献
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《Slavic & East European Information Resources》2013,14(1-2):123-143
ABSTRACT The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed. 相似文献
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Jon C. Giullian 《Slavic & East European Information Resources》2013,14(3):278-284
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire. 相似文献
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《Slavic & East European Information Resources》2013,14(1):25-74
ABSTRACT The history of the almanac in Croatia is reconstructed through primary research in bibliographic and archival sources. The almanac is a vehicle for knowledge communication in informal contexts, engaging both oral tradition and literary forms traceable to medieval literacy and ways of structuring knowledge. The history of the almanac in Croatia reflects the changing context of the book trade, literacy, and the evolution of language. Four main stages are identified: (1) the beginning of the annual almanac in the seventeenth century; astrological almanacs reflecting the sensibility of the Baroque period; (2) the Enlightenment's stimulation of almanac publishing in the spirit of contemporary secular reforms in agriculture and education; (3) nineteenth-and twentieth-century almanac trade, showing complex and overlapping networks for the production, distribution and appropriation of printed almanacs;(4) roughly the end of World War II, when the almanac slowly moved out of the role of a popular mass medium and into specialized niches represented by regional, diaspora, and religious almanacs. 相似文献
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Neil De Young 《Publishing Research Quarterly》2009,25(3):139-146
Some key questions for publishers in today’s market are: Could Amazon’s recent merger and acquisitions strategy create a disruptive or paradigm shifting business model in the publishing industry? Do their recent actions post mergers and acquisitions illustrate a predicable pattern of behaviour that publishers can strategize around? This paper will explore these questions and look at some of the possible reasons behind Amazon’s business practices and the possible consequences to publishers. 相似文献
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Barbara Lison 《图书馆管理杂志》2013,53(2):180-187
ABSTRACTGerman authorities are expecting more than 1 million refugees by the end of 2015. These people come to Germany to seek protection and assistance and to build a new life, therefore it is important to welcome them and to assist them in their integration as soon as possible. This situation creates a versatile and perfectly fitting opportunity for cultural and educational programs, including libraries, which can play a vital role in this integration process. The key to integration is the knowledge of the German language, and the most important challenge now is to teach the necessary language skills to as many asylum-seekers as possible. 相似文献
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《Journal of Web Librarianship》2013,7(1):41-59
Abstract Many libraries use RSS to syndicate information about their collections to users. A survey of 65 academic libraries revealed their most common use for RSS is to disseminate information about library holdings, such as lists of new acquisitions. Even though typical RSS feeds are ill suited to the task of carrying rich bibliographic metadata, great potential exists for developing applications that can exploit metadata exposed to Web services via RSS. Using the MODS metadata format, entire catalog records can be seamlessly embedded in RSS 2.0 feeds. Existing tools, such as Library of Congress Java toolkits and XSLT stylesheets, can facilitate this process, while a new XSLT stylesheet may be used to create the RSS feeds complete with MODS records. As an example of the added functionality these MODS/RSS feeds can offer, records from a MODS-enriched RSS feed can be ingested into a non-RSS application such as Zotero. As more emerging library technologies use Web services architectures to handle data objects, the ability to syndicate catalog records will become more critical to providing innovative library Web services. 相似文献
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Most studies of collection development mask inadequate theoretical underpinnings with facile assumptions and dazzling statistical manipulations. This essay, in moving toward a model for collection development within both specific collections and library systems as a whole, seeks to demonstrate the full range and complexity of relevant factors. An enlarged theoretical grasp should help highlight both the possibilities and the challenges of existing approaches. One result could be a shift toward gaming or simulation techniques as more realistic analytical tools. 相似文献
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Jason D. Phillips 《期刊图书馆员》2013,64(1):82-101
An annotated list is presented describing seventeen periodicals that cover significant aspects of the gay, lesbian, bisexual, and transgender (GLBT) community and their culture in whole or in part, with popular content rather than an academic or research focus. The titles included are a selective and representative sampling. The entry for each periodical includes the following information: periodical title, publisher/editor and address, basic information, publication data, content, Internet information, an abstract/annotation, and evaluative statement 相似文献
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SUMMARY The state of Illinois funded a large scale Ariel project. This is a report of the project's successes and shortcomings. Although widely successful, additional training in the use of sophisticated hardware, primarily Minolta scanners, is needed. Data on sending and receiving is included. 相似文献
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SUMMARY Ariel files are the starting point for electronic delivery of interlibrary loan articles through ILLiad, Virginia Tech's interlibrary loan system. Despite some advantages to electronic delivery of articles to their desktops, a large majority of ILL customers continue to prefer print on paper delivery rather than electronic delivery. This fact has implications for introducing additional electronic services. Correctly choosing what services to impose on library customers, and what services to offer as value-added options, is fundamental to maintaining the credibility of libraries during these times of rapid change. 相似文献