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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2015/04/30  Number of Organizations 470, Number of records ALL: 2,049,874, Full text 1,519,176]

Content growth   
  
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Number of contents of latest month [2015/4] (Full text)
Past number of contents (Full text)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 232,473 (15.3%)
Thesis or Dissertation 66,339 (4.4%)
Departmental Bulletin Paper 824,790 (54.3%)
Conference Paper 23,866 (1.6%)
Presentation 6,165 (0.4%)
Book 20,051 (1.3%)
Technical Report 22,429 (1.5%)
Research Paper 33,403 (2.2%)
Article 50,458 (3.3%)
Preprint 375 (0.0%)
Learning Material 4,116 (0.3%)
Data or Dataset 52,423 (3.5%)
Software 30 (0.0%)
Others 182,258 (12.0%)
SUM 1,519,176
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 74.1 %   
Version distribution Input% 69.0 % Full text
Language distribution Input% 92.7 % Full text
NDC distribution Input% 23.3 % Full text
Fileformat distribution Input% 56.8 % Full text