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1.
[目的/意义]打破聚类分析法关系分析的固有模式,从关键词共现网络的结构出发,探讨关键词网络位置对技术间关联关系的影响。[方法/过程]基于ESI数据库2017年5月的更新数据,以电子信息领域的高影响力论文为研究对象,在对该领域进行宏观分析的基础上,依据结构洞和桥结构两种媒介角色理论,基于关键词共现网络分析电子信息领域内各技术的媒介角色,识别各技术之间的内在关联。[结果/结论]研究结果表明,优化研究、智能电网、功率控制、非线性系统、时间延迟、稳定性、同步技术等技术的媒介作用较重要,与多种技术存在关联,对电子信息领域的技术发展有至关重要的作用。媒介角色理论从结构角度出发,将微观的个体间关系与整个网络的宏观结构相结合的分析思路为技术间关联关系的探讨提供了新的视角。  相似文献   

2.
This article highlights the research productivity and scholarly communication of library and information science professionals during 2003–2012 by using Web of Science databases from 40 library and information science core journals. Data was interpreted by using two open-source software Vantage point (powerful text-mining tool for discovering meaningful result from raw data) and CiteSpace II to visualize the library and information science growth and trends. Underlying results indicated that mainstream of authors (12,847, 69.9%) published their article as a single author from 2003–2009, this trend has declined and collaborative number of publications trend has inclined during the last 3 years. The University of Illinois at Urbana-Champaign produced 95 (0.52%) of the total publications and stands at the leading position. The maximum number of publications was carried out by universities rather than non-academic institutions. This article identified that Asian countries, such as China, Taiwan, India, and Iran, are still in its infancy stage. The present study could be considered as a useful tool for effective allocation of research funds in the research community and academic world of library and information science to enhance the research process.  相似文献   

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