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以汤森路透集团的web of science及CNKI数据库为数据源,对截至2011年已发表的SCI论文、中文核心期刊论文中信息科学与图书情报、图书馆科学类别下以“共享”为主题的期刊论文进行全面分析。利用文献计量学的相关分析方法对论文从时间分布、主题分布、期刊分布、主题发展趋势等多个角度探索研究者对共享方面研究的发展历程,分析现状,得出相应结论。 相似文献
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我国信息共享空间研究文献计量学分析 总被引：3，自引：0，他引：3
以CNKI<中国期刊全文数据库>为数据源,对截至2008年10月国内所发表的关于信息共享空间研究的113篇期刊论文进行全面的统计分析,从论文时间分布、主题分布、期刊分布、基金论文分布、作者分布、作者机构分布、关键词词频、被引频次、下载频次等多个角度探索我国信息共享空间研究的发展历程,分析现状,指出存在的问题并提出相应的对策. 相似文献
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通过文献计量统计方法和CiteSpace Ⅲ软件对2005-2015年CNKI收录的主题为"物联网"的核心期刊论文进行了分析,绘制了可视化图谱来揭示出国内物联网研究的时间分布情况、高产作者分布情况、研究机构分布情况、核心期刊分布情况以及目前的研究热点分布情况,并对今后的研究趋势做出了简要的总结。 相似文献
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于曦 《中国科技期刊研究》2024,(3):400-407
【目的】分析国际期刊论文层面的研究主题,有助于准确获取领域内全球主题分布特点和发展现状,为中国科技期刊建设和学术水平提升提供借鉴和参考。【方法】以图书情报学国际期刊论文为研究对象,借助《CWTS莱顿大学排名》主题分类,开展论文层面的研究主题定位。根据研究主题发现主题集中和主题分散的期刊,分别分析这些期刊的主题分布特点和研究现状。【结果】图书情报学国际期刊主要涉及17个微观领域。图书馆学期刊多为主题集中期刊,研究领域包括信息素养、网络搜索、知识组织、健康科学、同行评议等。情报学期刊多为主题分散期刊,研究领域包括数字化学习、组织研究、文献计量分析、在线评论等。【结论】基于论文层面的学科主题定位和分析可以有效识别出学科主要研究主题,发现跨学科研究和新兴研究领域,为中国科技期刊提升论文利用率提供思路,为期刊编辑制定论文选题提供方向,为索引机构与搜索引擎提供精准主题定位,也为作者选刊、投稿提供帮助。 相似文献
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选取<中国对期刊网>、<中文维普科技全文数据库>和万方数据-数字化期刊群作为检索工具,以2002～2007年间所发表的关于隐蔽网络研究的50篇期刊论文为分析数据,从论文年代分布、主题分布、期刊分布、作者分布、基金分布等7个角度分析我国隐蔽网络研究的现状,并指出存在的问题. 相似文献
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情报学研究主题分布的文献计量学分析 总被引：12，自引：1，他引：12
本文运用文献计量学方法，对1993-2002年情报学期刊论文研究主题分布进行统计分析，通过分析发现G350、G354、G356、G359等四个主题是10年来情报学科的研究主流，“G354．4：机械化、自动化检索系统”是10年中情报学的研究热点。对情报资料进行整理、分析、研究，对网络信息资源进行有效的组织、加工整理，使杂乱的信息有序化等工作将会成为情报学的研究重点。 相似文献
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关联规则挖掘在DM研究热点演化分析中的应用 总被引：2，自引：0，他引：2
数据挖掘是基于数据库、统计学、机器学习、人工智能等多学科交叉的新兴学科领域.为系统分析和评价该学科过去和现在的研究热点及其内在结构,以Web of Science数据库收录的主题为"data mining"的期刊论文为数据源,对关键词进行规范和统计选出热点高频词,然后将期刊论文视为事务,高频词视为项集,采用关联规则分析方法挖掘隐含在1997～2004年、2005～2008年两个时期文献集中的关联词汇,定量描述知识主题之间的逻辑关联和相关影响程度,并借助可视化工具对知识主题关联网络进行直观展示. 相似文献
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《内蒙古科技与经济》2021,(15)
以中国社会科学引文数据库、中国知网期刊全文数据库收录的期刊论文为数据来源,进行了美育与图书馆的相关文献分析,包括时间分布、学科领域、研究主题等,研究结果可为高校图书馆开展相关研究工作提供参考。 相似文献
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Leah A. Lievrouw 《The Information Society》1998,14(2):83-96
The main premise of this article is that in information societies generally, and in virtual social contexts particularly, a distinctive style of interaction to facilitate the communication of difference, heterotopic communication , has emerged. It rests on two cultural foundations: an ideological belief in the positive, socially integrating power of communication, and a prevailing ethic of instrumental rationality, subjective individualism, and strategically practiced self-interest. The former is demonstrated by the use of simulation and spectacle as sources of information; exhibitionism/voyeurism as a communicative style; and the awareness of surveillance. The latter is seen in the competitive use of knowledge as a commodity; a surface globalism masking deep parochialism; lateral as well as vertical information inequity; and the use of public versus private as strategies for engagement rather than as spaces. Those who engage in heterotopic communication resort to their 'own devices' both in the sense of personal agendas, strategies, interests, and interpretations, and in the form of the telecommunication tools that help realize them. These personal and technological devices allow individuals with the right educational and technical resources to avoid exposure to disagreement, difference, or other information that does not serve their direct purposes or reflect their particular views of the world; yet they also help convey the appearance of openness, availability, and cooperation. This style of interaction is used strategically in combination with information and communication technologies to gain social or economic advantages, but it may encourage social separatism and parochialism, inhibit the negotiation of disputes, and emphasize competing interests. 相似文献