共查询到20条相似文献，搜索用时 78 毫秒
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计算机科学文献的老化速度 总被引：4，自引：0，他引：4
本文以计算机技术学科类具有代表性的10种期刊2001年发表的全部论文为统计对象,收集其引用文献进行该学科的文献老化研究。对该学科引文的时序分布、当年指标、最大引文年限、引文半衰期、普赖斯指数等文献老化量度指标进行统计分析。结果表明:该学科的中、外文文献最大引文年限分别为第3和第4年,引文半衰期为5.5年,普赖斯指数为45.8%,并提出分别以该学科中、外文文献发表后的11年和16年作为文献保存年限参考值,建议把该学科近5年内发表和出版的文献作为文献订购的时限。 相似文献
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我国主要石油科技期刊的引文分析与老化研究 总被引：3，自引：0，他引：3
用引文分析方法研究了石油科技期刊文献的引文年代分布特征,探讨了石油科技期刊文献的老化规律,计算了老化半衰期等量度指标。 相似文献
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基于重点学科引文分析的我国高校人文社会科学外文文献保障率研究 总被引：1，自引：0，他引：1
使用抽样调查方法,以利用外文文献较多的人文社会科学重点学科为研究对象,通过对教师、硕、博士研究生的科研成果进行引文分析,研究高校人文社会科学教学科研人员的外文文献需求和信息利用行为模式,并与CASHL项目的馆藏情况进行比对,研究高校人文社科外文文献保障率,为构建我国高校人文社科外文文献资源保障体系提供理论支持。 相似文献
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科技期刊长期老化趋势与影响因素实证研究——基于4门学科期刊30年引文数据的统计分析 总被引：1，自引：0，他引：1
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文献半衰期与普赖斯指数之间的关系研究 总被引：2，自引：0，他引：2
文献半衰期和普赖斯指数是用来测度文献老化速度的两个重要指标。文章从文献老化B—K方程出发,首次给出文献半衰期与普赖斯指数之间的关系式。用该关系式拟合了超导专业期刊的引文数据。计算结果表明：B—K方程的半衰期计算公式和莫蒂列夫修正式的半衰期计算公式对某些文献半衰期小于3年的学科（专业）是不适用的;新的计算引文半衰期公式所得到的结果与内插法得到的结果非常接近;并且该公式给出的半衰期范围围要比B—K方程的半衰期和莫蒂列夫修正式的半衰期要大得多。因此,新的计算引文半衰期公式更具普适性。 相似文献
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利用CSSCI对我国高等院校人文社科研究状况的分析 总被引：11，自引：0，他引：11
据南京大学研制的《中文社会科学引文索引》(CSSCI)对全国各地区、各高校在人文社会科学各领域的发文情况的统计分析 ,可以了解全国人文社会科学发展概况 ,为人文社会科学研究的发展提供决策依据。参考文献 3。表 6。 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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运用文献计量学中有关内容分析、作者分析、引文分析的一些基本方法,对贵州财经学院人文社会科学研究人员2000～2006年发表的期刊论文,从发文指标、引文指标、摘录指标三个方面进行了全面的统计、分析和评价,比较客观地揭示和描述了新世纪初贵州财经学院人文社会科学研究与发展的基本状况。 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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《Legal Reference Services Quarterly》2013,32(3-4):223-229
SUMMARY The Nevada Constitution provides voters with the ability to propose new statutes, amendments to existing statutes, and amendments to the State constitution through the initiative petition process. Voters can also approve or disapprove of existing statutes through the referendum petition process. Both require the circulation of a petition to collect a minimum number of signatures before the Secretary of State will place the measures on the ballot for the general election. As with other topics of law, Nevada has a profound shortage of research resources on initiatives and referenda, but State law and government Web sites provide enough information to allow for significant research. 相似文献
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SUMMARY This article is a case study of Ariel use at the University of Texas at Austin. The author divides the history of Ariel use into three distinct stages: resistance, full implementation, and enhanced. For each stage the advantages and disadvantages of using Ariel are discussed. The author concludes that using Ariel saves both money and staff time and permits faster delivery of documents than other methods. 相似文献
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《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(4):113-119
SUMMARY CISTI, the Canada Institute for Scientific and Technical Information, is one of the world's largest document delivery suppliers, and was among the first to be fully automated. The revolutionary Intel-liDoc system, developed during the years 1993 to 1995, provided for end-to-end automation of the document delivery process, which has enabled CISTI to improve its service and accommodate growth. From the beginning Ariel was, and remains, an integral part of IntelliDoc. This article describes how Ariel has been integrated into IntelliDoc and into CIS-TI's services, showing the benefits to CISTI and to its clients. 相似文献
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Nadia Zavorotna 《Slavic & East European Information Resources》2013,14(1-2):90-96
The author describes the Slavic Humanities Index, a bibliographic database of scholarly and cultural articles on subjects including history; literature; language teaching; linguistics; philosophy; ethnology; performing arts; and cultural, borderland, and regional studies. She discusses its development, its current form and functionality, and plans for the future. 相似文献