Open Access statistics for Altera (United States), United States, covering academic research published from 2000 to 2025. Read More.
Open Access Percentage
83%
Total
Publications
4.9K
Total Open
Publications
4.1K
Total
Citations
35K
Open Access
Percentage
83%
Total
Publications
4.9K
Total Open
Publications
4.1K
Total
Citations
35K
Breakdown
Publisher Open
50%
Both
28%
Other Platform Open
3%
Closed
19%
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 34%
1.2K
Hybrid 28%
934
No Guarantees 38%
1.3K
Other Platform Open
Institution 88%
1.2K
Other Internet 13%
178
Domain 6%
78
Preprint 2%
24
Public 1%
18
Other Platform Locations
Name | Platform Type | Publications |
|---|---|---|
doaj.org OAI-PMH Repository | Institution | 588 |
LA Referencia | Institution | 479 |
aecid.es OAI-PMH Repository | Institution | 181 |
Unknown Repository | Other Internet | 110 |
PubMed Central | Domain | 79 |
DOI | Other Internet | 75 |
Royal Netherlands Academy of Arts and Sciences | Institution | 62 |
wur.nl OAI-PMH Repository | Institution | 46 |
Hospitais da Universidade de Coimbra | Institution | 43 |
Le Centre pour la Communication Scientifique Directe - HAL - Diderot | Institution | 22 |
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