共查询到20条相似文献，搜索用时 421 毫秒
1.
【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
2.
【目的】 探讨不同类型文献对期刊影响因子的作用,为科学评价学术期刊质量和影响力提供参考。【方法】 以3种代表性的国际顶级期刊Physical Review Letters,Chemical Reviews和Energy & Environmental Science为例,通过查询Web of Science数据库的相关数据,分别计算和分析了综述性文献和研究性文献对期刊影响因子的总体贡献度与平均贡献度。【结果】 总体贡献度与平均贡献度可以分别从总体上及平均上来评价不同类型文献对影响因子的作用。【结论】 这两种贡献度评价方法的有机结合可有效地评估不同类型文献对影响因子的影响,有利于建立更为公正和合理的期刊评价体系。 相似文献
3.
翟万银 《中国科技期刊研究》2018,29(12):1183-1191
【目的】 揭示Nature非学术栏目在期刊中的作用及作用方式,以探索我国科技期刊科学办刊途径,从而促进我国科技期刊学术影响力的提高。【方法】 以不同年份出版的4期Nature作为研究对象,分析非学术栏目的构成、文章内容和目标读者,并统计文章的字数、被引频次和自引次数。【结果】 非学术栏目的主要功能是以科普方式宣传、解读学术论文,次要功能是构建Nature的良好生态,而不是凭自身获取被引频次和自引次数来提高期刊影响因子。【结论】 非学术栏目以科普短文形式宣传、解读了Nature的学术论文,我国科技期刊应学习Nature宣传学术论文的方式方法,其中Nature的120 words/180汉字的科普短文宣传法简单有效,易于模仿应用。 相似文献
4.
王燕 《中国科技期刊研究》2018,29(10):1048-1053
【目的】 比较研究“中国科技期刊国际影响力提升计划”(以下简称“影响力提升计划”)对其第一批资助的SCI收录期刊国际影响力水平的提升效果。【方法】 依据Web of Science《期刊引证报告》和中国知网《中国学术期刊国际引证报告》2013年和2016年数据,对2013年11月被“影响力提升计划”资助的非新创办的SCI收录期刊和未受资助的SCI收录期刊进行对照研究。比较其总被引频次(Total Cites,TC)、影响因子(Impact Factor,IF)、国际影响力指数(Clout Index,CI)、平均期刊影响因子百分位(Average Journal Impact Factor Percentile,AJIFP)的变化及分区提升率。【结果】 受资助期刊和未受资助期刊TC、IF、篇均被引频次、即年指标、标准化特征因子、CI、国际他引TC和国际他引IF均显著提升(P<0.05),且受资助期刊被资助后AJIFP同样提升显著(P<0.05)。除即年指标和标准化特征因子的增幅在2组间差异无统计学意义外,受资助期刊上述指标的增幅及分区提升率均显著高于未受资助期刊(P<0.05)。不同资助额度的受资助期刊间影响力指标的提升差异无统计学意义(P>0.05)。受资助期刊在资助前后可被引文献数增加并不显著(P>0.05),降低幅度超过10%的期刊共6种(14.6%)。但未受资助期刊可被引文献量降低幅度超过10%的期刊占35.8%。【结论】 “影响力提升计划”1期资助效果显著。大部分受资助期刊影响力指标提升显著,但个别期刊影响力指标不升反降。受资助期刊的可被引文献量增加并不明显,有些期刊可被引文献量下降明显。不同资助额度对期刊影响力指标的提升影响不明显。 相似文献
5.
【目的】 分析我国SCI收录期刊国际合作出版情况及实行国际合作出版后期刊影响力的变化。【方法】 选取2007—2016年与国外出版商有过合作出版经历的151种SCI收录期刊为研究对象,以期刊总被引频次、影响因子、即年指标和分区等作为期刊影响力指标,对样本期刊的国际合作出版情况进行统计,探讨我国国际合作出版期刊的影响力变化。【结果】 我国SCI收录期刊的国际合作出版商主要有Springer、Elsevier和Wiley-Blackwell;一直是国际合作出版的期刊共118种,一直是国内出版的期刊共28种,国际合作出版期刊与国内出版期刊的影响因子分别为2.01±2.04和0.91±0.52(P<0.001),即年指标分别为0.39±0.45和0.35±0.41(P=0.039),总被引频次分别为1566.3±1845.0和1335.8±1376.4(P=0.620),仅期刊总被引频次差异无统计学意义。国际合作出版与国内出版的Q1区期刊所占比例分别为24.6% 和0,Q2区期刊所占比例分别为21.2%和13.8%,且由国内出版变更为国际合作出版的期刊共27种,其中数据较全的10种期刊里,5种期刊影响力提升明显,1种期刊影响力提升幅度较小,4种期刊影响力略有下降,但幅度较小。 【结论】 与国外出版商合作可在一定程度上提升我国科技期刊的国际显示度和学术影响力。 相似文献
6.
【目的】考察出版单位编辑学论文的发表情况,从而探讨出版单位编辑学研究水平与其办刊质量的关系。【方法】 检索CNKI数据库2012—2014年《中国科技期刊研究》和《编辑学报》的文章,对参与发文的期刊出版单位的发文量进行统计和排序,得出发文量排名前10的单位,另外抽样只参与发表1篇论文的期刊出版单位,对二者办刊质量的相关指标,包括拥有期刊数、国内外重要数据库收录情况、影响因子变化、复合总被引频次、复合即年指标、Web即年下载率和总下载频次等进行比较分析。【结果】在这两刊上参与发表编辑学论文较多、编辑学研究水平较高的单位大部分旗下拥有多种期刊,有较多期刊被国内外重要数据库收录,并且旗下大部分期刊近两年的影响因子处于上升趋势,相关评价指标均优于发文较少的单位。【结论】出版单位开展编辑学研究活动可以促进编辑水平提高,促进出版单位建设,促进期刊外部发展环境优化,最终共同促进办刊质量提高。 相似文献
7.
【目的/意义】为了定量分析学术期刊影响力的影响因素,针对目前研究方法的不足,引进偏最小二乘回归
（PLSR）模型进行研究。【方法/过程】以图书情报类期刊为研究样本,构建期刊影响力影响因素指标体系,利用期刊
影响力指数表征期刊影响力,建立单因变量PLSR模型并采用VIP 值衡量各影响因素的重要程度。【结果/结论】实
证结果表明：复合总被引、五年影响因子和他引影响因子是排名前三的重要因素;即年指标和平均引文数不是主要
因素;可被引文献量、可被引文献比和被引半衰期的影响作用十分微弱。研究指出,在对期刊影响力与其影响因素
之间的关系进行研究时,应该注重样本特异点的筛选。 相似文献
8.
国际著名四大医学周刊栏目设置及对我国医学期刊的启示 总被引：1，自引：1，他引：0
【目的】探讨国际著名医学期刊JAMA《美国医学会杂志》、NEJM《新英格兰医学杂志》、The Lancet《柳叶刀》和BMJ《英国医学杂志》(简称四大医学周刊)的栏目设置及内容特色。【方法】逐期浏览2013年1-6月四大医学周刊,其中BMJ 26期,JAMA 24期,NEJM 26期,The Lancet 25期,分析101期期刊的栏目设置及内容特色。【结果】 四大医学周刊每期都包括十几个栏目,有固定栏目和非固定栏目,每个栏目根据期刊内容刊登不同数量的文章。内容主要以研究类、观点类、通信类、人文类等为主。【结论】四大医学周刊栏目设置多样、灵活、内容丰富,突出了期刊办刊特色及办刊宗旨。 相似文献
9.
【目的】 分析《中华医学杂志英文版》(Chinese Medical Journal,CMJ)与国外三大医学期刊《新英格兰医学杂志》《柳叶刀》《美国医学会杂志》通讯类文章的差异,为优化国内医学期刊通讯类栏目提供参考。【方法】 利用Web of Science数据库和《期刊引证报告》,比较2015—2016年CMJ与国外三大医学期刊通讯类文章的载文情况,分析2017年排名前10位高被引文章的特点。【结果】 CMJ通讯类文章刊载量、比例、被引频次和引用率均明显偏低;同时,对学科研究热点追踪程度低,从而导致被关注程度较低。【结论】 国内医学期刊对通讯类文章重视程度不高,所发表的通讯类文章影响力较低。应重视通讯类栏目建设,及时把握相关学科领域的研究前沿和社会热点,刊发高影响力通讯类文章。 相似文献
10.
【目的】分析不同学术影响力的综合类/专科类期刊栏目建设和专题策划的差异化情况,从突出相关学科期刊差异化发展的视角,探索综合类科技期刊有效避免不良竞争、与相关学科期刊共赢的高质量发展途径。【方法】根据《中国科技期刊引证报告》中期刊学术影响力情况和中国知网的期刊栏目发文引证数据,以处于不同学术影响力水平的老年医学相关学科的8种专科类和综合类期刊为研究对象,纵向(不同学术影响力期刊)和横向(综合类与专科类期刊)分析比较期刊栏目建设和专题策划的差异情况。【结果】学术影响力较高的4种期刊中,综合类和专科类期刊的栏目发文量排名、篇均被引频次排名差异较大;学术影响力较低的4种期刊中,综合类和专科类期刊的差异较小。在不同学术影响力期刊中,专题类、特色类栏目是促进差异化的重要栏目;学术影响力较低的4种期刊的指南共识类发文的学术质量有待加强,专题数量和选题质量需要继续提高。应通过降低相关学科期刊间共有专题比例,关注选题综合性、专业性、连续性,以及与国家重要课题结合等加深差异化程度。【结论】医学综合类科技期刊需要提高栏目统筹管理水平、加强特色类和专题类栏目建设、注重指南共识类文章的学术质量,从差异化视角推动... 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.
《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
18.
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
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