เปรียบเทียบวิธี

	Ulrichsweb Global Serials Directory	ฐานข้อมูล Scopus	ฐานข้อมูล Web of Science
สาขาวิชา	บรรณมิติ	บรรณมิติ	บรรณมิติ
ตระกูล	Process / pipeline	Process / pipeline	Process / pipeline
ปีกำเนิด	1932	2004	1964
ผู้ริเริ่ม	Bowker (originally R.R. Bowker), now ProQuest LLC	Elsevier	Institute for Scientific Information (ISI), now Clarivate Analytics
ประเภท	Database	Database	Database
แหล่งต้นตำรับ	ProQuest. (2024). Ulrichsweb: Global Serials Directory. Retrieved from https://ulrichsweb.serialssolutions.com/	Elsevier. (2024). Scopus: The largest abstract and citation database of peer-reviewed literature. Retrieved from https://www.elsevier.com/products/scopus	Clarivate Analytics. (2024). Web of Science Core Collection. Retrieved from https://clarivate.com/webofsciencegroup/solutions/web-of-science-core-collection/
ชื่อเรียกอื่น	Ulrichsweb, Ulrich's International Periodicals Directory, Ulrich's Directory	Scopus, Elsevier Scopus	WoS, ISI Web of Science, Clarivate Analytics
ที่เกี่ยวข้อง	4	5	5
สรุป	Ulrichsweb is a comprehensive, subscription-based global serials directory cataloging over 300,000 print and electronic journals, magazines, newspapers, and other periodical publications. Developed by ProQuest (originally R.R. Bowker), Ulrichsweb has served librarians and researchers for over 90 years as the authoritative source for journal metadata, publication information, and peer-review verification. A unique feature is Ulrichsweb's verification program: editorial staff contact journals directly to confirm peer-review claims, marking journals as 'refereed' only after validation. This verification process distinguishes legitimate peer-reviewed journals from predatory publishers falsely claiming peer review.	Scopus, owned by Elsevier, is the world's largest abstract and citation database covering peer-reviewed journals, conference proceedings, and book chapters across all scientific disciplines. Launched in 2004, Scopus now indexes over 37 million documents from more than 6,500 journals, with expanded coverage of open-access publications and emerging regional journals. Scopus provides researchers and institutions with comprehensive citation tracking, field-normalized impact metrics (CiteScore, SJR, SNIP), and analytical tools for literature discovery, research evaluation, and institutional benchmarking.	Web of Science (WoS) is the oldest and most established multidisciplinary citation database, maintained by Clarivate Analytics since 1964. It indexes over 21,000 peer-reviewed journals, conference proceedings, and books across sciences, social sciences, and humanities. WoS provides researchers, librarians, and administrators with comprehensive citation tracking, publication metrics, and research evaluation tools essential for literature review, impact assessment, and research strategy.