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| Директория на списанията с отворен достъп× | H-индекс× | |
|---|---|---|
| Област | Библиометрия | Библиометрия |
| Семейство | Process / pipeline | Process / pipeline |
| Година на възникване≠ | 2003 | 2005 |
| Създател≠ | DOAJ Community (Swedish library consortium, later expanded to international consortium) | Jorge Hirsch, University of California San Diego |
| Тип≠ | Database | Metric |
| Основополагащ източник≠ | Directory of Open Access Journals. (2024). About DOAJ. Retrieved from https://doaj.org/ link ↗ | Hirsch, J. E. (2005). An index to quantify an individual's scientific research output. Proceedings of the National Academy of Sciences USA, 102(46), 16569-16572. DOI ↗ |
| Други названия≠ | DOAJ, Directory of Open Access | Hirsch index, h factor, h-number |
| Свързани | 5 | 5 |
| Резюме≠ | The Directory of Open Access Journals (DOAJ) is a community-maintained, freely accessible directory of high-quality, peer-reviewed open-access journals and articles established in 2003. DOAJ indexes over 20,000 open-access journals across all disciplines (sciences, social sciences, humanities, arts) from diverse geographic regions. The directory serves researchers, librarians, and administrators as the authoritative curated list of legitimate open-access journals—differentiating quality open-access publications from predatory journals that lack genuine peer review. DOAJ quality seal, awarded to journals meeting stricter governance and transparency criteria, enables identification of the highest-caliber open-access publications. | The h-index, or Hirsch index, is a quantitative metric proposed by physicist Jorge Hirsch in 2005 to measure researcher productivity and citation impact simultaneously. A researcher has an h-index of h if they have published at least h papers, each cited at least h times. For example, an h-index of 20 means the researcher has 20 papers each cited at least 20 times. The h-index is widely used in research evaluation, hiring, and promotion decisions, though experts debate its limitations. It provides a single number balancing quantity of publications against quality of citations, offering an intuitive summary of research career impact. |
| ScholarGateНабор от данни ↗ |
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