Open Access statistics for University of California System, United States, covering academic research published from 2000 to 2023. Read More.
Open Access Percentage
55%
Total
Publications
1.2M
Total Open
Publications
635K
Total
Citations
52M
Open Access
Percentage
55%
Total
Publications
1.2M
Total Open
Publications
635K
Total
Citations
52M
Breakdown
Publisher Open
13%
Both
23%
Other Platform Open
19%
Closed
45%
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 30%
123K
Hybrid 30%
125K
No Guarantees 40%
162K
Other Platform Open
Domain 58%
282K
Institution 38%
185K
Other Internet 28%
138K
Preprint 22%
110K
Public 6%
29K
Other Platform Locations
Name | Platform Type | Publications |
---|---|---|
PubMed Central | Domain | 277K |
Europe PMC | Domain | 195K |
California Digital Library - eScholarship | Other Internet | 82K |
University of California - eScholarship University of California | Institution | 81K |
arXiv | Preprint | 71K |
U.S. Department of Energy Office of Scientific and Technical Information - OSTI OAI | Institution | 26K |
CiteSeer X | Other Internet | 24K |
Semantic Scholar | Public | 21K |
bioRxiv | Preprint | 21K |
DOI | Other Internet | 21K |