1996-2025年日本天文与天体物理学研究共同体的机构拓展
Institutional broadening of the Japanese astronomy and astrophysics research community during 1996-2025
AI总结：
本研究利用文献计量数据发现，1996-2025年日本天文与天体物理学的机构数量和论文数均增长，但顶尖机构仍主导机构-论文关联，有效机构数量增长较慢，机构仅实现名义拓展而非完全均衡化。
摘要：
利用发表记录的文献计量数据，我们调查了1996-2025年日本天文与天体物理学的机构拓展情况。日本机构署名的论文数量从588篇增至2156篇，参与的日本独特机构数量从123个增至227个，这表明机构基础实现了名义上的拓展。不过，机构-论文关联仍集中在顶尖机构中，而作为频率加权多样性度量的有效机构数量，其增长速度比独特参与机构数量的增长更缓慢。这些结果显示，日本天文与天体物理学在机构层面实现了拓展，但并非通过机构参与的完全均衡化实现；观测到的变化最适合解读为在持续存在的顶尖机构核心周围，参与机构基础的扩张。
英文摘要：
Using bibliometric data from publication records, we investigate the institutional broadening of Japanese astronomy and astrophysics over 1996-2025. The number of Japan-affiliated publications increased from 588 to 2,156, and the number of unique participating Japanese institutions increased from 123 to 227, indicating a nominal broadening of the institutional base. However, institution-publication links remained concentrated among leading institutions, and the effective number of institutions, a frequency-weighted diversity measure, increased more gradually than the number of unique participating institutions. These results show that Japanese astronomy and astrophysics broadened institutionally, but not through a complete equalization of institutional participation. The observed change is best interpreted as an expansion of the participating institutional base around a persistent core of leading institutions.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
