Open Access statistics for Altera (United States), United States, covering academic research published from 2000 to 2025. Read More.
Open Access Percentage
86%
Total
Publications
5.9K
Total Open
Publications
5.1K
Total
Citations
42K
Open Access
Percentage
86%
Total
Publications
5.9K
Total Open
Publications
5.1K
Total
Citations
42K
Breakdown
Publisher Open
52%
Both
29%
Other Platform Open
4%
Closed
15%
Percentage of Open Access over time
Publisher Open
Both
Other Platform Open
Closed
Volume of Open Access over time
Open
Closed
Publisher Open
OA Journal 33%
1.4K
Hybrid 30%
1.3K
No Guarantees 37%
1.6K
Other Platform Open
Institution 90%
1.6K
Other Internet 12%
209
Domain 5%
90
Preprint 1%
25
Public 1%
25
Other Platform Locations
Name | Platform Type | Publications |
|---|---|---|
doaj.org OAI-PMH Repository | Institution | 747 |
LA Referencia | Institution | 724 |
aecid.es OAI-PMH Repository | Institution | 264 |
wur.nl OAI-PMH Repository | Institution | 173 |
Unknown Repository | Other Internet | 137 |
PubMed Central | Domain | 91 |
DOI | Other Internet | 81 |
Royal Netherlands Academy of Arts and Sciences | Institution | 26 |
Hospitais da Universidade de Coimbra | Institution | 26 |
Le Centre pour la Communication Scientifique Directe - HAL - Diderot | Institution | 25 |
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