The journal takes issues of copyright infringement or plagiarism very seriously, and we will investigate any claims of malpractice to protect authors and the reputation of the journal. We reserve the right to use plagiarism detecting software and take action if duplication of material without permission or acknowledgement is found.

While papers may be based on PhD work or conference papers, we expect that papers submitted to PPP have not been published in a substantive form and as part of a peer reviewed process elsewhere. Papers may have been published as reports on departmental websites.