基于论文标题的学科结构研究

Study on the Structure of Mechanics Based on the Titles of Mechanics Papers

借助学术期刊探讨学科结构是科学计量学的一个新兴领域，通常是通过期刊之间的引文关系来研究学科结构。而本文是从期刊的论文标题入手，探索期刊之间在研究内容上的关系并由此揭示学科结构。以66种力学期刊中68075篇学术论文的标题为样本，利用词频分析、多维尺度分析和因子分析等方法，对力学期刊之间在研究主题上的相似度与区分度进行分析，将66种力学期刊复杂的内部关系转换为少数几个相互独立的综合指标。通过聚类分析对66种力学期刊进行分类，用图谱直观地展现出力学各分支学科在研究主题上的关联状况，深入分析了固体力学、流体力学、理性力学（含力学中的数学方法）、声音与振动力学、计算力学等力学分支学科之间的关系，进而从力学期刊的论文标题这一新颖角度揭示了力学的学科结构。

It is a new academic area of depending on journals to explore the structure of science through the journal citation relationship. However, this paper studied the joumals＇ contents rather than citation, then discovered the structure of science. Based on the title words of 68,075 papers published in 66 mechanical journals, using word frequency analysis, multidimensional scaling analysis and factor analysis, the paper analyzed similarity and distinction of journals＇ contents, converted complex internal relations of mechanical journals to a small number of independent factors. Mechanical journals was classified by cluster analysis. The paper demonstrated the relationship of mechanical research contents with intuitive maps, analyzed the relationship among the mechanical branches, solid mechanics, fluid mechanics, rational mechanics （including mathematical methods in mechanics）, sound and vibration mechanics, computational mechanics, and revealed the mechanical disciplinary structure from the new perspective.