This collection houses previously published articles published in traditional scholarly and scientific journals when allowed by the copyright holder and/or publisher. You may see the following versions of articles:

Pre-print = the version of the article as initially submitted to the journal, prior to peer-review edits.

Post-print = the version of the article after peer-review suggestions and edits.

As-published = the version of the article as it appeared in the publication.


Once a manuscript has been published in a traditional journal, the Sigma Repository does not review or judge the quality of the individual article and relies on the scientific publishing and review process of the individual journal. The presence of an article in this repository does not reflect an endorsement of, or concurrence with, the contents of the article by Sigma or the Sigma Repository.

Recent Submissions

View more

Powered by KnowledgeArc