Subject analysis is an approach for analyzing the development of academic research and paradigm shifts in Library and Information Science. Through content analysis and categorization of academic literatures, the focus in different development stages of research fields, such as research areas, issues of concern, and temporal and spatial shifts, is summarized and analyzed. This study proposes an analytical framework for the topics of electronic resources by adopting the Medical Subject Headings (MeSH) posted by the U.S. National Library of Medicine (NLM) as the basis for subject classification. The study covers cancer research as a subject case to verify and compare the databases of SCImago Journal and Country Rank and the bibliographies of PubMed biomedical literatures. Through systematic collection, collation, and analysis of raw data, variables such as specific key topics, number of publications, and year of publications are segmented for statistical analysis. The findings show that cancer research is a developing trend, and the compiled information provides a diversity of study topics for informatics and information behavior research.

中文翻译：

---

癌症研究的主题分析：核心文献的程序与鉴定

学科分析是一种分析图书馆和信息科学学术研究发展和范式转变的方法。通过对学术文献的内容分析和分类，总结和分析研究领域不同发展阶段的关注点，如研究领域、关注的问题、时空变化等。本研究采用美国国家医学图书馆（NLM）发布的医学主题词表（MeSH）作为主题分类的基础，提出了电子资源主题的分析框架。该研究以癌症研究为主题案例，以验证和比较 SCImago Journal 和 Country Rank 的数据库以及 PubMed 生物医学文献的书目。通过系统地收集、整理和分析原始数据，对特定关键主题、出版物数量和出版物年份等变量进行细分以进行统计分析。研究结果表明，癌症研究是一个发展趋势，汇编的信息为信息学和信息行为研究提供了多样化的研究课题。