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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2018/05/31  Number of Organizations 681, Number of records ALL: 2,839,740, Full text 2,151,826]

Content growth   
  
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Number of contents of latest month [2018/5] (ALL)
Past number of contents (ALL)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 472,711 (16.6%)
Thesis or Dissertation 231,939 (8.2%)
Departmental Bulletin Paper 1,288,548 (45.4%)
Conference Paper 150,280 (5.3%)
Presentation 55,213 (1.9%)
Book 49,193 (1.7%)
Technical Report 52,877 (1.9%)
Research Paper 74,828 (2.6%)
Article 78,609 (2.8%)
Preprint 703 (0.0%)
Learning Material 10,693 (0.4%)
Data or Dataset 55,174 (1.9%)
Software 56 (0.0%)
Others 318,916 (11.2%)
SUM 2,839,740
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 75.8 %   
Version distribution Input% 58.8 % ALL
Language distribution Input% 94.9 % ALL
NDC distribution Input% 14.1 % ALL
Fileformat distribution Input% 36.9 % ALL