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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2017/08/31  Number of Organizations 645, Number of records ALL: 2,677,452, Full text 2,038,019]

Content growth   
  
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Number of contents of latest month [2017/8] (ALL)
Past number of contents (ALL)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 462,690 (17.3%)
Thesis or Dissertation 217,182 (8.1%)
Departmental Bulletin Paper 1,209,569 (45.2%)
Conference Paper 143,837 (5.4%)
Presentation 49,452 (1.8%)
Book 46,265 (1.7%)
Technical Report 48,514 (1.8%)
Research Paper 71,089 (2.7%)
Article 76,561 (2.9%)
Preprint 670 (0.0%)
Learning Material 10,058 (0.4%)
Data or Dataset 54,307 (2.0%)
Software 55 (0.0%)
Others 287,203 (10.7%)
SUM 2,677,452
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 76.1 %   
Version distribution Input% 57.9 % ALL
Language distribution Input% 93.4 % ALL
NDC distribution Input% 15.8 % ALL
Fileformat distribution Input% 38.2 % ALL