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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2017/12/31  Number of Organizations 660, Number of records ALL: 2,730,641, Full text 2,075,589]

Content growth   
  
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Number of contents of latest month [2017/12] (Full text)
Past number of contents (Full text)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 283,752 (13.7%)
Thesis or Dissertation 107,132 (5.2%)
Departmental Bulletin Paper 1,103,868 (53.2%)
Conference Paper 34,474 (1.7%)
Presentation 14,302 (0.7%)
Book 34,086 (1.6%)
Technical Report 44,146 (2.1%)
Research Paper 65,333 (3.1%)
Article 54,746 (2.6%)
Preprint 572 (0.0%)
Learning Material 4,599 (0.2%)
Data or Dataset 53,767 (2.6%)
Software 47 (0.0%)
Others 274,765 (13.2%)
SUM 2,075,589
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 76.0 %   
Version distribution Input% 65.8 % Full text
Language distribution Input% 93.6 % Full text
NDC distribution Input% 19.1 % Full text
Fileformat distribution Input% 44.8 % Full text