University of the Ryukyus

University of the Ryukyus

The University of the Ryukyus, abbreviated to Ryūdai, is a Japanese national university in Nishihara, Okinawa, Japan. Established in 1950, it is the westernmost national university of Japan and the largest public university in Okinawa Prefecture. Derived from Wikipedia licensed CC-BY-SA.

Open Access statistics for University of the Ryukyus, Japan, covering academic research published from 2000 to 2024. Read More.


Open Access Percentage

48%


Total
Publications

14K


Total Open
Publications

7K


Total
Citations

323K


Open Access
Percentage

48%


Total
Publications

14K


Total Open
Publications

7K


Total
Citations

323K

Wikipedia

Website

download

Breakdown

25% 19% 4% 52%

Publisher Open

25%

Both

19%

Other Platform Open

4%

Closed

52%

Percentage of Open Access over time

0%10%20%30%40%50%60%70%80%90%100%
2000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024

Publisher Open

Both

Other Platform Open

Closed

Volume of Open Access over time

0100200300400500600700800Total Publications
2000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024

Open

Closed

Publisher Open

42%OA Journal

OA Journal 42%

2.7K

Hybrid 22%

1.4K

No Guarantees 36%

2.3K

Other Platform Open

Domain 62%

2.1K

Institution 29%

992

Other Internet 24%

828

Preprint 6%

212

Public 5%

166

Other Platform Locations

Name

Platform Type

Publications

PubMed Central
Domain
2.1K
DOI
Other Internet
785
University of the Ryukyus - University of the Ryukyus academic repository
Institution
476
arXiv
Preprint
211
Europe PMC
Domain
205
Figshare
Public
98
Le Centre pour la Communication Scientifique Directe - HAL - Diderot
Institution
64
Zenodo
Public
57
Unknown Repository
Other Internet
57
Nagasaki University - Nagasaki University's Academic Output SITE
Institution
44
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Data updated 18 August 2025

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