Interested in submitting to this journal? We recommend that you review the About the Journal page for the journal's section policies, as well as the Author Guidelines. Authors need to register with the journal prior to submitting or, if already registered, can simply log in and begin the five-step process. All processes in JPDD publishing, starting from submitting the paper, reviewing process, to sending print journals, the author is not charged anything. The author will get a print journal that we will send to the author's residence address. Journal allow the author(s) to hold the copyright without restrictions