So sánh phương pháp
Xem các phương pháp đã chọn cạnh nhau; những hàng khác biệt được làm nổi bật.
| Ulrichsweb Global Serials Directory× | Cơ sở dữ liệu Scopus× | |
|---|---|---|
| Lĩnh vực | Trắc lượng thư mục | Trắc lượng thư mục |
| Họ | Process / pipeline | Process / pipeline |
| Năm ra đời≠ | 1932 | 2004 |
| Người khởi xướng≠ | Bowker (originally R.R. Bowker), now ProQuest LLC | Elsevier |
| Loại | Database | Database |
| Công trình gốc≠ | ProQuest. (2024). Ulrichsweb: Global Serials Directory. Retrieved from https://ulrichsweb.serialssolutions.com/ link ↗ | Elsevier. (2024). Scopus: The largest abstract and citation database of peer-reviewed literature. Retrieved from https://www.elsevier.com/products/scopus link ↗ |
| Tên gọi khác≠ | Ulrichsweb, Ulrich's International Periodicals Directory, Ulrich's Directory | Scopus, Elsevier Scopus |
| Liên quan≠ | 4 | 5 |
| Tóm tắt≠ | 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. |
| ScholarGateBộ dữ liệu ↗ |
|
|