共查询到19条相似文献，搜索用时 187 毫秒
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以SJR为数据来源,比较分析了1996-2008年巴西、印度、中国、韩国4个国家发表科技论文数量、可引用文献量、文献被引量、自引量、篇均被引量、去除自引后的篇均被引量、H指数、文献引用率、国际合作量等9个指标。中国发表论文数最多,2003年后每年增加约3万篇。巴西、韩国文献引用率、篇均引用量高,且自引率低;印度居中等水平;中国文献引用率、篇均引用率低且自引率高;国际合作度巴西最高、中国最低。可见中国的科技论文质量与其他3个国家相比,还有一定的差距。 相似文献
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中国和印度作为世界公认的亚洲两个实力较为接近的发展中国家,有必要对其在科技、政治、军事等领域的差异作进一步的分析,以取长补短。学术期刊可以体现一个国家的科研竞争力,同时也是科学生产率的重要表现形式之一。因此,比较中国和印度学术期刊的相关情况具有一定的现实意义。本文主要选取中国和印度均被《期刊引证报告》(Journal Citation Reports,JCR)收录的期刊,通过比较各个期刊的各项指标以及这些期刊所涵盖学科的基本情况,从而得出中国相对于印度在此类科技期刊上的优势和劣势,并通过比较和分析,得出相关结论。 相似文献
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科技期刊核心竞争力研究综述与分析 总被引：2，自引：0，他引：2
本文从分析文献的角度出发,对我国科技期刊核心竞争力研究方面的文献进行了归纳总结,分析了我国科技期刊核心竞争力的研究现状,结合期刊发展趋势,从中得出我国科技期刊核心竞争力研究的方向,为更好地研究科技期刊提供参考。 相似文献
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当前我国与欧洲主要国家国民阅读状况之比较研究——以中国、德国、俄罗斯为例 总被引：2，自引：0，他引：2
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电视走进竞争时代有人做了比较,中国目前电视台的数量是美国的2倍,日本的25倍,英国的260倍,超过了美国、俄罗斯、日本、英国、法国、德国、印度、加拿大、澳大利亚、巴西和巴基斯坦等11国电视台的总和。然而,随着社会主义市场经济体制的确立,观念和 相似文献
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文章根据科技期刊历年关于冠状病毒研究的文献产出情况,分析科技期刊在应对突发公共卫生事件中的健康传播作用和学术引领作用。以“冠状病毒（coronavirus）”为主题词,在PubMed和中国知网中检索相关文献,发现随着冠状病毒发展史上的重大事件的发生,两个数据库中的相关文献数量增幅明显,文献量均呈现高峰,其中2020年文献量创历史新高。对在PubMed和中国知网检索到的各类文献占比进行比较,发现临床试验、Meta分析、随机对照试验、综述、系统综述这5种类型的中文文献数量明显少于英文文献。中文科技期刊的文献主要集中于临床诊治方面,今后应重视提高临床试验、随机对照试验、系统综述等类型的文献比重,鼓励开展多中心、大样本的临床研究,并重视研究的延续性,形成高水平原创性研究成果。 相似文献
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《Journal of Informetrics》2022,16(3):101305
This study examined the development of English-language journals indexed by the database of Journal Citation Reports (JCR) and owned by six non-English-speaking countries (China, Japan, South Korea, Taiwan, Italy, and Spain) and four countries where English is an official national language (Australia, Canada, India, and Singapore) over a 21-year period. Four types of journals were identified based on changes in journal impact factor (JIF) and rank percentage per year. The results suggest that “growth” journals with trends of increasing JIF and rank percentage outnumbered other types of journals for each country and were not concentrated in particular subject categories. Over half of the growth journals in eight countries were positioned at Q3 and Q4 levels. No significant differences in the average age of growth journals were identified between countries. Although China possessed the highest percentage of growth journals, its journals with the highest growth were at the Q4 level. This study concluded that China and South Korea should monitor their development of JCR journals due to their faster improvement in the average annual rank percentage per growth journal. One limitation is that a considerable proportion of junior English journals were not analyzed in this study. 相似文献
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以2004--2008年被Science Citation Index—Expanded收录有文献计量学指标并且是我国正式出版的科技期刊为数据来源,研究其中与国际著名出版集团合作的科技期刊的语种、地区、载文量、刊期分布以及学科主题与合作期刊影响因子的变化情况。 相似文献
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In this paper we map the scientific journals from Ibero‐American countries indexed in the Web of Science and Scopus. Data were collected from the journals' websites. Of 879 journals in the two databases, Spain accounted for 35.6% of the titles, Brazil 28.5%, and the remaining 11 countries together 35.9%. Medicine had the most titles in almost all countries, with 28.9% of the total, followed by agricultural and biological sciences (particularly in Brazil) with 14.9%, and social sciences with 11.5%. A digital format was used by 95% of the journals and 82% were open access, with an even higher level of open access in Latin America. The publishers were mainly universities (37.7%) and associations (31.1%). Ibero‐American countries, with the exception of Spain, do not have a long tradition as scientific journal publishers, but in the last few years they have gained in importance as players in scientific communication with the use of new business models for journals. 相似文献
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Omwoyo Bosire Onyancha 《Publishing Research Quarterly》2017,33(1):71-91
The purpose of the study was to investigate and compare the social media (SM) impact of 273 South Africa Post-Secondary Education accredited journals, which are recognised by the Department of Higher Education and Training of South Africa for purposes of financial support. We used multiple sources to extract data for the study, namely, Altmetric.com, Google Scholar (GS), Scopus (through SCImago) and the Thomson Reuters (TR) Journal Citation Reports (JCR). Data was analysed to determine South African journals’ presence in and impact on SM as well as to contrast SM visibility and impact with the citation impact in GS, JCR and Scopus. The Spearman correlation test was performed to compare the impact of the journals on SM and other sources. The results reveal that 2923 articles published in 122 of the 273 South African (SA) journals have received at least one mention in SM; the most commonly used SM platforms were Twitter and Facebook; the journals indexed in the TR’s citation indexes and Scopus performed much better, in terms of their average altmetrics, than non-TR and non-Scopus indexed journals; and there were weak to moderate relationships among different types of altmetrics and citation-based measures, thereby implying different kinds of journal impacts on SM when compared to the scholarly impact reflected in citation databases. In conclusion, South African journals’ impact on SM, just as is the case with countries with similar economies, is minimal but has shown signs of growth. 相似文献
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This study examines the extent of concentration in the journal publishing industry. A number of aspects are considered: publishers, journal impacts, countries, and languages. For journals indexed in JCR from 1997 to 2009, just 0.2% of publishers produce 50% of journals and articles, and 0.3% of publishers account for the top 50% of citations, impact factors and immediacy indices. More than a half of publishers in JCR are from four countries: USA, UK, Germany and Japan. In addition, more than a half of journals come from the USA and UK. Examining the publishers' interactions in terms of buying and selling journals shows the extent of change by acquisition, and the acquisition links between publishers. The findings confirm that the international market of journal publishing is essentially dominated by a few publishers. 相似文献