Open Access statistics for Altera (United States), United States, covering academic research published from 2000 to 2025. Read More.
Open Access Percentage
85%
Total
Publications
5.9K
Total Open
Publications
5K
Total
Citations
42K
Open Access
Percentage
85%
Total
Publications
5.9K
Total Open
Publications
5K
Total
Citations
42K
Breakdown
Publisher Open
52%
Both
29%
Other Platform Open
2%
Closed
17%
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 89%
1.5K
Other Internet 13%
229
Domain 5%
90
Preprint 1%
25
Public 1%
25
Other Platform Locations
Name | Platform Type | Publications |
|---|---|---|
doaj.org OAI-PMH Repository | Institution | 749 |
LA Referencia | Institution | 722 |
aecid.es OAI-PMH Repository | Institution | 265 |
Unknown Repository | Other Internet | 142 |
DOI | Other Internet | 99 |
PubMed Central | Domain | 91 |
Royal Netherlands Academy of Arts and Sciences | Institution | 62 |
wur.nl OAI-PMH Repository | Institution | 48 |
Le Centre pour la Communication Scientifique Directe - HAL - Diderot | Institution | 24 |
Hospitais da Universidade de Coimbra | Institution | 24 |
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