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1.
基于汤森路透(Thomson Reuters)的基本科学指标(ESI)和科学引文索引扩展(SCIE)文献数据统计,分析了近10年主要国家和研究机构在地球科学领域的论文产出及其研究影响力、研究热点方向等,并重点分析了中国在该领域的研究影响力。分析结果表明,在国际地球科学研究领域,美国的论文数量最多,英国和美国的论文影响力较高,日本各方面接近平均水平,俄罗斯有关地球科学研究的论文占其本国科研论文的比例高于其他国家,新兴经济体国家普遍重视地球科学研究,但论文的国际影响力总体还偏弱。中国的地球科学研究近年来发展迅速,相关研究成果及其影响力在新兴经济体国家中表现突出,但在国际合作和高影响力论文产出方面与发达国家相比尚有一定差距。 相似文献
2.
以收录于Web…of…Science的国家自然科学基金资助论文为对象,从高被引论文和平均引用影响两个视角,评价我国与G7国家的合作效果。研究表明,美国是第一大合作伙伴,加拿大、日本、英国、德国和法国与我国的合作规模相当,意大利与我国合作最少;在提升国际合作影响力(高被引论文份额和平均引用影响)方面,NSFC对数学、化学与化工、以及物理学与材料科学领域的提升作用明显,但这种提升效果因合作国家不同而异;NSFC资助对国际合作影响力提升作用较好的领域也是我国总体上实力相对较强的领域,而需要付出更大努力的是我国影响力远低于世界平均水平的领域(如环境与生态学、神经科学与行为学、微生物学、分子生物学与遗传学、以及临床医学等),NSFC资助的国际合作效果甚至不及非NSFC资助的国际合作。文末提出资助政策建议。 相似文献
3.
基于ESI学科分类体系,以2004—2013年的SCI论文为数据样本,通过科学计量学的研究方法,从国际合作发展态势,主导地位变迁和主导论文影响力变迁4个角度分析中国各学科在科研国际合作中地位的变化,并与日本、印度的变化情况进行对比。结果表明,中国广泛开展国际合作,但国际合作率的排名与国际合作论文数的排名基本相反,多数学科国际合作率不稳定,合作范围越来越广;中国基础学科的主导率较高,但近几年呈下降趋势,医学相关学科增长较快,但仍相对较低;中国已有11个学科的主导论文影响力高于世界论文平均影响力,但各学科主导论文影响力均低于非主导论文。 相似文献
4.
【目的/意义】学科领域发展现状与趋势分析对科技工作者掌握学科发展动态、政策制定与管理者制定政策
与实施有效管理而言至关重要。【方法/过程】本文以同位素径流分割领域为例,采用知识可视化技术,对该领域的
科技文献增长规律、主要学科、核心出版源、具有影响力的国家、机构和作者分布特征及其合作模式进行了探讨。
结合文献计量学指标和地理信息系统,刻画国家尺度下该领域科研产出和影响力重心时空分布特征,揭示该领域
未来发展格局。【结果/结论】该研究结果表明21世纪同位素径流分割领域发展加速,尤其是2015年以来。该领域涉
及学科数量较多,且新学科不断涌现。水资源、地质学和环境科学与生态学是该领域发文量前3的学科。中国科学
院是该领域发文量最多的研究机构。McDonnell JJ是该领域发文量与影响力最高的国际知名学者。美国、加拿大、
英国和中国是该领域主要研究国家。北美和西欧地区的国家主导了该领域的国际合作。该领域学者倾向于机构
内合作或国内机构间合作,国际合作有待提升。领域内科技文献主要分布在北半球,科研产出和影响力重心逐渐
向东亚转移,但科研影响力重心的转移滞后于科研产出重心的转移。【创新/局限】该研究结果可为同位素径流分割
的学科建设与相关研究提供一定的参考,可为图书情报领域学科发展态势挖掘与可视化提供一定的借鉴。 相似文献
5.
2007～2011年中国发表SCI眼科学研究论文和综述共计5027篇,其中国际合作论文1775篇。5年间眼科学研究国际合作论文呈现持续增长趋势,增长率达144.14%,国际合作率稳定在35%左右。国外作为第一研究机构,与中国合作较多的3个国家分别是美国(571篇)、英国(71篇)、澳大利亚(56篇)。中国作为第一研究机构,合作较多的前3的国家同样为美国(1480篇)、英国(287篇)、澳大利亚(225篇)。同时对国内外机构合作情况进行了研究。 相似文献
6.
本文基于Web of Science数据库和Dimensions数据库,分析了七国集团国家、部分金砖国家和韩国在量子科技领域的国际科技论文产出总体状况,并从量子钟、量子感知、量子通信、量子计算四个方面研究了各自的相对产出、相对引用影响力和国际合作情况。同时,还对七国集团国家和中国在上述领域获得项目资助的情况进行了对比,并对美国科学基金会和中国国家自然科学基金委员会在该领域资助所产出的国际科技论文情况开展了比较分析。 相似文献
7.
联合国教科文组织（UNESCO）致力于推动教育、科学和文化的合作交流，在中国建立有15个二类中心。掌握UNESCO在科技研究领域的动态对于促进我国各机构与UNESCO在科学、技术、工程、文化等领域的国际合作与交流具有借鉴和指导意义。文章以Web of Science为数据源，以UNESCO在2010—2019年公开发表的4 936篇学术论文为研究对象，采用文献计量法，从论文产出状况、学科领域研究主题、国际合作关系等角度开展UNESCO在科技研究领域的趋势分析。结果表明，UNESCO在近10年来发表的学术论文呈逐年增长趋势，其中高被引论文占1.64%。研究论文覆盖21个学科，涉及自然科学、社会科学、人文科学、管理科学等，以及其交叉学科，体现了UNESCO的跨学科研究特征。重点研究学科包括生态/环境科学、化学、地球科学、社会科学、工程科学、生物学与生物化学、材料科学、物理学、植物与动物科学、农业科学。其中，防灾减灾、非洲、女性、青少年和遗产保护是其传统优势领域。10年来，UNESCO的主要合作研究国家分布在五大洲，但主要集中在欧洲且以荷兰最为突出。文章建议，今后中国的UNESCO二类中心应重视和加强与UNESCO总部在重点学科领域、传统优势领域、合作研究网络、新冠疫情防控、提升中国影响力等方面的深入合作，如在生态环境、防灾减灾、非洲、女性、青年、文化遗产保护等领域的合作。 相似文献
8.
从国际科技合著论文状况看中国环境领域国际科技合作态势 总被引：1，自引：0，他引：1
环境领域是我国十一五期间重点强调的国际科技合作关键领域之一,该领域产出的国际合著论文是国际科技合作实施状况的一种重要反映。本文以美国科学引文索引数据库扩展版数据库(SC I-EXPANDED)收录的、中国2005-2009年在环境研究领域发表的国际合著论文为研究对象,通过对论文的生产能力、地域分布、机构分布、研究热点分布、发表期刊分布等方面的计量分析,系统地揭示了5年来我国在环境领域所开展的国际科技合作的整体表现以及国际科技合作网络的基本特征。 相似文献
9.
SCI论文是衡量研究机构和科研人员学术水平高低的重要指标之一,基于SCI论文对我国地质工程学科的国际化发展趋势进行分析,可为该学科的后续发展提供支持。本文基于Web of Science数据库,对2008-2017年世界范围和中国地质工程学科领域的科研成果进行了统计分析,从发文数量、研究方向、合作研究、基金资助机构、研究机构、研究学者、主要发文期刊等方面分析了世界和中国地质工程学科领域近十年的研究状况和发展趋势。研究结果表明:中国在近十年该学科发展迅猛,发文总量已超越美国,位居第一;在全球排名前20位的研究机构中,我国研究机构占7席。国际合作和多学科交叉在本学科发展趋势增强。 相似文献
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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