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HOME  BROWSE We are providing statistics of Japanese Institutional Repositories DataBase.
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[2017/02/28  Number of Organizations 589, Number of records ALL: 2,458,058, Full text 1,867,169]

Content growth   
  
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Number of contents of latest month [2017/2] (Full text)
Past number of contents (Full text)

Content growth

Breakdown of content by resource type (ratio)

Journal Article 272,661 (14.6%)
Thesis or Dissertation 93,704 (5.0%)
Departmental Bulletin Paper 993,038 (53.2%)
Conference Paper 33,618 (1.8%)
Presentation 10,167 (0.5%)
Book 22,927 (1.2%)
Technical Report 42,252 (2.3%)
Research Paper 59,841 (3.2%)
Article 55,235 (3.0%)
Preprint 586 (0.0%)
Learning Material 4,321 (0.2%)
Data or Dataset 53,572 (2.9%)
Software 31 (0.0%)
Others 225,216 (12.1%)
SUM 1,867,169
Number of contents of latest month
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Analysis of content   

Ratio of full text ALL 76.0 %   
Version distribution Input% 67.6 % Full text
Language distribution Input% 93.0 % Full text
NDC distribution Input% 20.5 % Full text
Fileformat distribution Input% 52.0 % Full text