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1.
匡登辉 《中国科技期刊研究》2018,29(5):503-508
【目的】 考察顶级期刊的影响力,总结顶级期刊高网络参与度论文的特征,为我国科技期刊评价和科学传播提供借鉴。【方法】 以Nature 2016年高网络参与度论文为分析对象,选取Scopus、Altmetric.com进行文献被引频次及Altmetrics指标采集,对高网络参与度论文作者、学科、收录引用文献类型、Nature的IF和CiteScore、Altmetrics指标的覆盖率进行统计分析。【结果】 Nature高网络参与度论文的合著率达52%;各学科分布相对均衡,人文社会科学成果占19%;Scopus对Nature的论文选择性收录,仅从本研究来看,News的收录仅占28.97%;Nature同年度CiteScore比IF数值低;Blog、Facebook、Tweeter、Google+、Reddit、Mendeley、news story覆盖率较高,可用于探讨顶级科研成果在网络上的关注程度及其传播规律。【结论】 Nature与国际在线发布平台合作服务的新型出版模式在一定程度上成就了高网络参与度论文。 相似文献
2.
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
3.
【目的】 以SSCI的学科分类为单位,分析不同学科期刊的Article和Review参考文献量的差异,以利于相关人员了解及借鉴,同时为进一步从文后参考文献的角度更深入了解现行期刊评价指标的优缺点提供数据支持。【方法】 分学科下载2015年SSCI收录期刊的主要文献计量学指标,同时记录各刊在学科内的分区及各刊Article和Review的平均参考文献量,Spearman等级秩相关性分析用于分析各学科Article和Review的参考文献量与学科各评价指标的相关性。【结果】 2015年SSCI共收录了57个学科的4468种期刊,Article和Review的参考文献量与学科规模的大小均不相关(均为P>0.05);学科内Article和Review的参考文献量由多到少排序,依次为Q1区(60.27条、86.85条)、Q2区(52.21条、83.80条)、Q3区(48.16条、74.61条)、Q4区(45.70条、62.90条),且差异均有统计学意义(均为P<0.05)。相关性分析结果表明,Article参考文献量仅与学科中位被引半衰期和学科中位引用半衰期存在相关性;Review参考文献量除与学科中位被引半衰期不存在相关性外,与其他主要期刊评价指标均有相关性(均为P<0.05)。【结论】 按SSCI学科分组,Article和Review参考文献量与学科影响力的关系并不一致,二者与学科规模均不相关;同一学科影响力较大期刊的Article和Review参考文献量相对较多。 相似文献
4.
钱爱兵 《中国科技期刊研究》2017,28(10):887-899
【目的】 结合江苏省科技期刊发文、引文、作者、基金项目等元数据,结合被引次数、影响因子、即年指标、文献半衰期与h指数等文献计量学指标,综合分析江苏省科技期刊的学术影响。【方法】 以中国科学技术信息研究所发布的《中国科技期刊引证报告(扩刊版)》(2012—2016年)为原始数据,采用文献计量学的方法,分析比较江苏省科技期刊的发文数量、篇均引文数量、篇均作者、作者地区分布、机构分布、篇均基金项目、论文选出比例、引用期刊数量、总被引次数、他刊引用次数、影响因子、即年指标、被引半衰期、引用半衰期、h指数。【结果】 江苏省科技期刊的学术影响力不断提高,各个期刊在不同指标显示出自己的特点。【结论】 江苏省科技期刊表现出清晰的学术层级性,影响力不均衡。 相似文献
5.
【目的】分析P指数在中国SCI期刊评价中的适用性,从而促进中国SCI期刊评价体系的完善。【方法】 以中国大陆及香港地区SCI期刊在2014年度《期刊引证报告》（Journal Citation Reports,简称JCR）的主要文献计量指标为研究对象,系统研究P指数分别用于不同学科和同一学科中国SCI期刊评价的有效性,分析P指数与被JCR收录后的总被引次数（C）、影响因子（IF）、5年影响因子（IF5）、被JCR收录后的总载文量（N）和平均被引率（C/N）的关系,并进行相关性分析。将P指数和h指数对中国SCI期刊评价的适用性进行对比。【结果】 P指数与中国SCI期刊的总被引次数、影响因子、5年影响因子、总载文量、平均被引率具有较强的相关性,能够较好地反映期刊的规模和影响力。P指数对同一学科SCI期刊比不同学科SCI期刊的评价更具优势。【结论】 P指数延续了h指数的优点,并具有更强的区分度,对优秀学术期刊的识别能力比较突出,使期刊评价更加科学,具有更加广泛的实用意义。 相似文献
6.
严建新 《中国科技期刊研究》2018,29(5):497-502
【目的】 针对引用的偏态分布,提出修正影响因子失真的方法。【方法】 以影响因子不同的7种物理学综合期刊为样本,根据2011—2015年度各学术载文的被引频次,以被引量的分布曲线和洛伦兹曲线揭示期刊被引量在学术载文间的分布特征,引入基尼系数来描述引用分布的不均匀程度。【结果】 期刊被引量在学术载文间均为右偏分布,基尼系数均大于0.4。【结论】 被引量的非正态分布能导致影响因子出现不同程度的失真,以(1-G)为基尼修正系数,可有效修正影响因子失真。 相似文献
7.
【目的】 对CiteScore和《期刊引证报告》(JCR)期刊评价体系收录期刊的异同进行比较,并分析CiteScore对期刊评价研究与实践的潜在影响。【方法】 对CiteScore 2016版及JCR 2015版收录的期刊进行统计分析,比较两者在期刊收录范围、相互覆盖程度、期刊影响因子计算方法、影响力排名分区的差异,分析中国科技期刊在2个评价体系中的表现。【结果】 CiteScore和JCR所采用的评价期刊影响因子的计算方法类似,对期刊影响力的评价结果总体存在较高的一致性。【结论】 CiteScore和JCR将并存一段时间,并推动完善国际期刊评价方法的研究热潮。 相似文献
8.
盛丽娜 《中国科技期刊研究》2018,29(3):291-295
【目的】 以《期刊引证报告》(JCR)内的6门学科为基础,分析期刊影响因子相关自被引率(SCR-IF),为深入解析自被引率(SCR)在期刊评价中的作用提供数据参考。【方法】 分别在SCI和SSCI中各选择相互独立的3门学科,充分考虑学科规模和影响力大小的差异性,计算各期刊的SCR、SCR-IF,以及非影响因子相关自被引率(SCR-NIF),对比分析不同JCR学科以及不同期刊分区中SCR-IF的分布特征。同时,对SCR-IF与期刊其他主要文献计量学指标进行Pearson相关性分析。【结果】 列入研究的401种期刊中,SCR-IF大于0的期刊占93.77%;6门学科内,SCR-IF的平均值大于SCR的平均值,SCR的平均值大于SCR-NIF的平均值;Q1区和Q2区期刊的SCR-IF均小于Q3区和Q4区期刊的SCR-IF;SCR-IF与期刊其他主要文献计量学指标具有相关性,但是相关系数较小。【结论】 各学科期刊的SCR-IF均大于SCR和SCR-NIF;SCR-IF在影响力较高的期刊中相对较小。 相似文献
9.
【目的】 探讨期刊影响力指数的科学合理性及其可能存在的不足,以利于决策者、办刊人以及作者更加科学地评估学术期刊影响力,预测期刊发展潜力。【方法】 以2015—2017年《中国学术期刊影响因子年报》的10个期刊指标数据为研究对象,运用IBM SPSS软件,采用主成分分析法,求得各期刊的综合主成分得分(F),按照F对期刊进行排名;将F与期刊影响力指数(fCI)排名结果进行对比分析;采用Spearman秩相关系数,比较fCI和F与10个指标的相关程度。【结果】 F与10个指标的相关性总体高于fCI;fCI和F与即年指标的相关系数相对较小,但是F明显高于fCI。【结论】 F排名更接近各项指标共同表征的期刊水平;更能反映期刊的反应速率和被引强度;在参阅期刊fCI排名时,应当特别注意参考期刊的即年指标。 相似文献
10.
【目的】评价近10年我国SCIE收录期刊主要指标变化,在此基础上提出一些改进建议。［方法］以JCR为依据,统计分析2005—2015年我国SCIE收录期刊种类、IF、学科分布、载文量、被引量IF和CNCI等主要指标变化。［结果］我国SCIE收录期刊新增约100种、涉及学科增加约50个,IF、被引量IF、CNCI等指标明显提高。但是,我国SCIE期刊仍存在学科空白,各学科期刊种数偏少,优势学科Q1和Q2区期刊屈指可数,论文质量有待提高。［结论］我国期刊可以从填补学科空白,打造优势学科高影响力期刊;组约优秀稿件,重视高被引论文;定位与国际接轨,发展与时俱进;加强自主发展能力等方面提高影响力。 相似文献
11.
《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
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.
《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
14.
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
15.
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
16.
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
17.
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
18.
Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
19.
Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
20.
Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献