JKMP is an open access international journal. Starting from 2023, in this issue, if your paper is accepted for publication, you will be asked to pay an Article Publication Fee to cover publications costs.  

Readers can read and download any full-text articles for free of charge. But authors may also pay some fees for the Ordered Original Reprint Articles (not reprint issue) with some eligible rates. For details about Original Reprint articles, please contact us.