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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2018/04/30  Number of Organizations 677, Number of records ALL: 2,850,790, Full text 2,174,446]

Content growth   
  
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Number of contents of latest month [2018/4] (Full text)
Past number of contents (Full text)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 291,738 (13.4%)
Thesis or Dissertation 111,721 (5.1%)
Departmental Bulletin Paper 1,144,748 (52.6%)
Conference Paper 36,214 (1.7%)
Presentation 14,591 (0.7%)
Book 35,018 (1.6%)
Technical Report 46,124 (2.1%)
Research Paper 67,336 (3.1%)
Article 72,139 (3.3%)
Preprint 583 (0.0%)
Learning Material 5,169 (0.2%)
Data or Dataset 54,686 (2.5%)
Software 47 (0.0%)
Others 294,332 (13.5%)
SUM 2,174,446
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 76.3 %   
Version distribution Input% 65.5 % Full text
Language distribution Input% 95.3 % Full text
NDC distribution Input% 16.8 % Full text
Fileformat distribution Input% 46.4 % Full text