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[目的 /意义]通过量化计量指标对研究主题的知识扩散进行测度与分析,客观地展现研究主题所包含的知识单元的扩散路径及其扩散规律。[方法 /过程]以Web of Science(SCI-E&SSCI)数据库核心合集为数据来源,通过被引参考文献检索方法,以J.E.Hirsch 2005年首次提出H指数概念的文献为被引文献,检索2005-2015间引用该文献的施引文献,得到样本数据。借助信息可视化分析工具CiteSpace分别进行关键词共现与文献共被引分析。将分析结果通过本文所提出的双阶知识扩散度指标Q算法进行计算,得到指标Q量变情况,并进一步分析H指数研究领域的演化扩散状况。[结果 /结论]H指数研究主题的知识扩散的相关性随着流动阶层的增加而降低;H指数研究主题一、二阶知识扩散文献的主要研究方向不同,二阶文献更侧重于应用领域的拓展,这也是该研究邻域知识流动的新增长点;通过对H指数研究主题的分析,证明了本文所提出的双阶知识扩散度指标Q的准确性及科学性。
[Purpose / Significance] To measure and analyze the diffusion of knowledge of research topics through quantitative and quantitative indicators, objectively display the diffusion paths and diffusion rules of the knowledge units contained in the research topics. [Method / Process] Based on the Web of Science (SCI-E & SSCI) database core collection as data sources, the paper first introduced the concept of H index by JE Hirsch in 2005 as a reference source, retrieved 2005-2015 Citation references cited in this document give sample data. With information visualization analysis tools CiteSpace, respectively, the co-occurrence of keywords and documents were cited citation analysis. The results of the analysis are calculated by the Q-algorithm of double-degree knowledge diffusion index proposed in this paper, and the quantitative change of index Q is obtained. Furthermore, the evolvement and diffusion status of H index research are further analyzed. [Results / Conclusions] The relevance of knowledge diffusion in the research subject of H-index decreased with the increase of mobile stratum. The first and second-order knowledge diffusion literature of H-index was mainly studied in different directions. The second-order literature focused more on the application field This is also the new growth point of the knowledge flow in the neighborhood of the research. Through the analysis of the research topic of the H-index, the accuracy and scientificness of the double-degree knowledge diffusion index Q proposed in this paper is proved.