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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2014/12/31  Number of Organizations 407, Number of records ALL: 1,955,248, Full text 1,440,211]

Content growth   
  
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Number of contents of latest month [2014/12] (Full text)
Past number of contents (Full text)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 226,641 (15.7%)
Thesis or Dissertation 62,714 (4.4%)
Departmental Bulletin Paper 770,761 (53.5%)
Conference Paper 22,807 (1.6%)
Presentation 5,619 (0.4%)
Book 19,603 (1.4%)
Technical Report 18,744 (1.3%)
Research Paper 32,240 (2.2%)
Article 49,368 (3.4%)
Preprint 378 (0.0%)
Learning Material 4,053 (0.3%)
Data or Dataset 52,418 (3.6%)
Software 29 (0.0%)
Others 174,836 (12.1%)
SUM 1,440,211
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 73.7 %   
Version distribution Input% 70.4 % Full text
Language distribution Input% 93.4 % Full text
NDC distribution Input% 24.2 % Full text
Fileformat distribution Input% 59.2 % Full text