Journal and discipline map
Separate the systems before comparing the journals.
Quartiles, disciplines, core lists and indexing databases answer different questions. Every project records the edition year, subject category, source path and query date before a journal-level conclusion is treated as confirmed.
01CAS Journal Ranking Zones 1-4
Use the Chinese Academy of Sciences journal ranking platform as a CAS-specific partition system. Record the edition year, upgraded table status, large or small subject category, zone result and query date. A CAS Zone is not a JCR quartile.
02JCR Q1-Q4
Use Journal Citation Reports by JCR year, metric and Web of Science subject category. A journal can have separate ranks and quartiles in different JCR categories, so the category name must travel with each Q label.
03Discipline Categories
Build the discipline view from the research question, topic scope, method route, target readers and journal coverage. This is a scope judgment, not another ranking layer.
04Core & Indexed Journals
Keep core catalogues and database inclusion separate. Record the catalogue name and edition when used, then record the database, index, journal profile and update date. Do not call a journal core only because it is indexed.