CiNii(Academic information search service, pronounced like "sigh-knee") is a database service which can be searched with academic information of articles, Books, Journals & Dissertations.
It is available free of charge for anyone.
"CiNii Research" enables you to search not only information on academic articles but also a lot of information related to research activities such as research data and project information..
About CiNii Research>>
"CiNii Articles" was integrated into CiNii Research on April 18, 2022.
"CiNii Books" enables you to search information of books and journals held by university libraries in Japan.
About CiNii Books>>
"CiNii Dissertations" enables you to search information on dissertations written for doctoral degrees in Japan conferred by Japanese Universities and the National Institute for Academic Degrees and University Evaluation.
About CiNii Dissertations>>
Before using CiNii
Please read carefully the Academic Content Service Usage Regulations and CiNii Articles Service Usage Detailed Regulations before using CiNii. By using CiNii, you agree to both regulations.
Recommdended web browsers
Operating environments are as follows (as of November 2021):
- Mozilla Firefox
- Google Chrome
- Microsoft Edge
* Please use the latest versions of each browser.
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CiNii uses Pop-ups. Please allow your browser to accept Pop-ups, in the settings of the browser you are using. If Pop-ups are not enabled, some functions may not be used.
Full text documents are available for reading from CiNii Research, CiNii Articles and CiNii Dissertations in PDF format. Please obtain the latest version of Adobe Reader (6.0 or later is recommended) in advance.
If you get an error viewing a PDF, try uninstalling your Adobe Acrobat Reader and reinstalling the latest version. It has been reported that having copies of both old and new versions of Adobe Acrobat Reader on the same computer can causes an error, even if you have installed the latest version.
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If you get error messages frequently, please refer to the following FAQ page.
→Frequently-Asked Questions "Questions about using content">>