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1.
中文期刊零被引率与期刊关键评价指标相关性分析——以图书情报学科为例 总被引：2，自引：2，他引：0
【目的】探讨期刊零被引率与期刊关键评价指标的相关关系,检验期刊零被引率作为期刊评价反向指标的科学性。【方法】以CSSCI为数据源,选择图书情报学科核心期刊作为研究对象,计算时间窗口分别为2-5年的期刊零被引率、期刊关键评价指标,借助于SPSS分析期刊零被引率与期刊评价指标间的相关关系。【结果】期刊零被引率与期刊关键评价指标(2年影响因子、5年影响因子和h指数)显著负相关,期刊自引对于期刊的引用突破并不构成重要影响。【结论】期刊零被引率可以作为一个反向指标,但需要考虑学科差异性。 相似文献
2.
预防医学类期刊引证指标与零被引论文率的相关性 总被引：2，自引：2，他引：0
通过查阅《中国学术期刊影响因子年报（自然科学与工程技术）》及中国知网,对31种预防医学类期刊的引证指标及其与零被引论文率的相关性进行分析。结果显示,期刊零被引率平均为49.16%;复合影响因子为0.451（0.070~1.354）,复合即年指标为0.060（0.006~0.507）,引用半衰期为5.7（3.3~7.4）,被引半衰期为4.8（3.4~7.6）,引用期刊数为492（145~1332）,被引期刊数为490（106~1256）,他引总引比为0.84（0.41~1.00）,互引指数为1.17%（0.08~3.58）%。期刊复合影响因子、复合即年指标、被引期刊数和零被引论文率均呈负相关（r值分别为-0.708,-0.382,-0.430,P值均<0.05）, 引用半衰期和零被引率呈正相关（r=0.578,P<0.05）;而被引半衰期、引用期刊数、他引总引比、互引指数与零被引论文率相关均无统计学意义（r值分别为0.254,-0.149,0.341,-0.167,P值均>0.05）。 相似文献
3.
h指数与其他文献计量学指标的相关性研究 ——以河南省学术期刊为例 总被引：1，自引：0，他引：1
盛丽娜 《中国科技期刊研究》2013,24(4):675-677
以河南省182种学术期刊为例,分析h指数与其他期刊文献计量学指标的相互关系。将2010年版《中国期刊引证报告》(扩刊版)内收录的河南省学术期刊的h指数与期刊被引指标(总被引频次、影响因子、即年指标、引用刊数、学科扩散指标、被引半衰期、学科影响指标)和期刊来源指标(基金论文比)作相关性分析,以探讨h指数与其他文献计量学指标的相关性。结果表明,h指数与期刊总被引频次、影响因子、即年指标、引用刊数、学科扩散指标、学科影响指标及基金论文比均呈统计学上的显著正相关。在182种河南省学术期刊及其中的106种自然科学期刊中,h指数与被引半衰期也均呈现了统计学上的正相关。 相似文献
4.
【目的】 了解综合性农业科学类中文核心期刊零被引论文特征,探讨该类期刊在提高影响力方面的措施。【方法】 收集《中文核心期刊要目总览》中13种综合性农业科学类期刊在2011年发表的零被引论文,对其作者数量、第一作者所属机构、第一作者职称、第一作者学历、基金资助情况以及论文下载频次、篇幅、类型及学科分布等进行统计分析。【结果】 各刊零被引论文数量与其发文量相关性不大,零被引率与期刊的影响因子呈负相关。高等院校的零被引论文占比最大;零被引论文随完成论文合作机构数量的减少而增加。基金资助论文的零被引率高于非基金资助论文;资助项目少的论文零被引率低于资助项目多的论文。篇幅短的文章或不系统的研究性论文较少被引用。摘要信息量存在一定程度的不完善。综述型论文零被引率小于研究型论文。【结论】 各刊发文量与零被引论文量间的关系视具体情况而定。针对零被引论文占比较大的稿件,即高等院校及任务类稿件,应在论文发表前的各环节进行协同控制。要加强及重视摘要信息的规范编辑。对来稿字数应作要求。编辑要及时掌握研究领域动向,加强与资深专家及学科带头人间的沟通,积极约稿。尽早发表并提高论文的显示度,进而减少零被引或低被引文献的产量。 相似文献
5.
方红玲 《中国科技期刊研究》2018,29(2):165-170
【目的】 比较国内外眼科学、数学和环境科学期刊被引半衰期的差异,为期刊编辑今后制定工作策略提供参考。【方法】 选择国内外眼科学、数学和环境科学期刊各10种,收集期刊的被引半衰期以及其他期刊评价指标,比较国内外相同学科期刊被引半衰期的差异;采用Spearman 相关分析法,对国内外眼科学、数学、环境科学期刊被引半衰期与其他文献计量学指标的相关性进行分析。【结果】 我国眼科学和环境科学期刊被引半衰期均短于国外相同学科期刊,我国大多数数学期刊被引半衰期长于国外数学类期刊。我国眼科学期刊被引半衰期与引用半衰期呈正相关,环境科学期刊被引半衰期与平均引文数呈正相关;国外3个学科期刊被引半衰期均与引用半衰期呈正相关(P均小于0.05)。【结论】 我国眼科学和环境科学期刊编辑今后首要任务是提升期刊国内显示度和持久影响力,数学期刊则需提升国际显示度和影响力。 相似文献
6.
应用文献计量学方法,对我国12种植物学期刊在《中国科技期刊引证报告》(CJCR)中的被引频次、影响因子、引用期刊数、扩散因子、即年指标、他引率、被引半衰期、基金论文比、论文地区分布数、平均引用率、普赖斯指数等11项指标进行了比较分析,并结合万方数据知识链接门户www.sci.com.cn检索的结果,对期刊的学术水平进行了单项的和综合的评价. 相似文献
7.
科技期刊下载量半衰期的建立及其文献计量学意义 总被引：1，自引：1，他引：0
刘雪立 《中国科技期刊研究》2012,23(4):561-564
根据期刊引用半衰期和被引半衰期概念建立了期刊下载量半衰期。基于CNKI数据库的期刊下载量数据,计算出我国11种眼科学期刊的下载量半衰期,并与中国学术期刊（光盘版）电子杂志社出版的《中国学术期刊影响因子年报》（2010年版）中的主要文献计量学指标进行相关性分析。结果发现,我国11种眼科学期刊下载量半衰期介于1.802和6.056之间（3.524±1.074）,明显小于期刊引用半衰期和被引半衰期,与复合他引影响因子、复合即年指标、期刊即年指标、基金论文比、期刊论文下载率和下载量等呈明显负相关,与引用半衰期和被引半衰期呈明显正相关,而与期刊他引影响因子和期刊影响力排序问卷调查结果无相关性。研究证实,下载量半衰期作为学术期刊影响力评价指标具有一定合理性,它既可以作为文献老化的测度指标,又具有测度期刊即时反应速率的功能。该指标属于反向评价指标,即下载量半衰期越大,期刊影响力越小。 相似文献
8.
郭亿华 《中国科技期刊研究》2016,27(10):1094-1099
【目的】通过分析国内地理学中文核心期刊的零被引论文特征,为地理学科技期刊选题策划、稿源筛选、提高影响力提供参考。【方法】以4次入选《中文核心期刊要目总览》的16家地理学期刊作为研究对象,分析其2009—2010年零被引论文的期刊分布、作者、基金资助、页数、摘要、学科和类型等的特征。【结果】所统计期刊论文零被引率较低,仅为1.79%;作者中学生占比较大,以博士为主,高等院校占比大于研究所;基金资助论文占比大于无基金资助;论文页数大部分<6页;摘要信息存在不同程度的缺失;学科分布上以天文学、地球科学、经济学、农业科学等为主。【结论】减少或者避免零被引论文需要期刊主办者、科研工作者、科研评价机构等的参与。 相似文献
9.
基金论文比作为科技期刊评价指标的合理性 ——基于SCI数据库中眼科学期刊的实证研究 总被引：3，自引：1，他引：2
近年国内关于基金论文比作为科技期刊评价指标一直存在极大争议。为了客观评价基金论文比在科技期刊评价中的作用,选取2009年SCI数据库收录眼科学期刊和论文为研究对象,对基金论文与非基金论文的被引率和篇均被引频次、期刊基金论文比与影响因子、5年影响因子、特征因子和零被引论文率的关系做了统计分析。向全球8525个眼科医生发放E-mail问卷调查表,对每个SCI眼科学期刊打分、排序,并与期刊基金论文比排序进行相关分析。按照被引频次高低,将所有论文分为4组,被引频次≥10的论文为Ⅰ组,5～9者为Ⅱ组,1～4者为Ⅲ组,零被引论文为Ⅳ组,计算4组论文的基金论文比,并进行统χ2检验。结果显示,2009年45种眼科期刊共发表论文7319篇,被引用6280篇,零引用1039篇,被引频次47333,论文被引率为85.80%,篇均被引6.467次。各种基金资助论文3110篇(42.49%),被引用2899篇,被引频次25404,论文被引率93.21%,篇均被引8.168次;无基金资助论文4209篇,占总论文的57.50%,论文被引率为80.33%,篇均被引5.21次。经Spearman相关检验,基金论文比与影响因子、5年影响因子、特征因子的相关系数分别为0.619、0.523和0.624,与问卷调查的相关系数为0.462。Ⅰ、Ⅱ、Ⅲ、Ⅳ组基金论文比分别为57.15%、51.51%、37.29%和20.31%,Ⅰ与Ⅱ、Ⅱ与Ⅲ、Ⅲ与Ⅳ组相比,χ2值分别为10.542、90.409和100.630(均为P<0.001)。因此认为,无论是论文被引率还是篇均被引频次,基金论文均明显高于非基金论文;期刊基金论文比与影响因子、5年影响因子、特征因子及读者调查得分均呈显著正相关;高被引频次组的论文其基金论文比明显高于低被引频次组论文。显然,基金论文比作为科技期刊评价指标是科学合理的。 相似文献
10.
学术期刊中的零被引论文特征分析——以编辑出版类核心期刊为例 总被引：2，自引：1，他引：1
【目的】为国内编辑出版类作者的选题及同行编辑组稿、选稿提供一定的参考依据,以期能对编辑出版类核心期刊学术影响力的提高有所裨益。【方法】 以7种编辑出版类核心期刊2009年刊发的文章在6年内(2009-2014年)的零被引论文为研究对象,从论文的不活跃性入手,参考相关高被引论文的研究思路,对这些论文的相关文本信息、相关作者信息、主题内容、基金资助情况、论文特征等进行统计分析。【结果】 零被引论文的出现与期刊的H指数、影响因子及其论文的语种、类型、学科分布等有着很大的相关性。【结论】期刊应该减少或避免零被引论文的出现,在注重基础理论的同时,要能够发现那些具有较大创新的优质稿件,提高期刊的学术影响力。 相似文献
11.
A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
12.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
13.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
14.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
15.
Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
16.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
17.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
18.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
19.
Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
20.
Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献