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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2017/10/31  Number of Organizations 652, Number of records ALL: 2,709,960, Full text 2,062,837]

Content growth   
  
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Number of contents of latest month [2017/10] (ALL)
Past number of contents (ALL)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 467,508 (17.3%)
Thesis or Dissertation 220,965 (8.2%)
Departmental Bulletin Paper 1,221,274 (45.1%)
Conference Paper 146,682 (5.4%)
Presentation 51,810 (1.9%)
Book 47,695 (1.8%)
Technical Report 49,932 (1.8%)
Research Paper 71,958 (2.7%)
Article 77,306 (2.9%)
Preprint 621 (0.0%)
Learning Material 10,083 (0.4%)
Data or Dataset 54,311 (2.0%)
Software 55 (0.0%)
Others 289,760 (10.7%)
SUM 2,709,960
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 76.1 %   
Version distribution Input% 58.0 % ALL
Language distribution Input% 93.5 % ALL
NDC distribution Input% 15.8 % ALL
Fileformat distribution Input% 38.0 % ALL