Plagiarism is the copying of ideas, text, data, and other creative work (e.g. tables, figures, and graphs) and presenting it as original research without proper citation. Plagiarism is a serious violation. We define plagiarism as a case in which a paper reproduces another work with at least 20% similarity and without citation. If evidence of plagiarism is found before or after acceptance or after the publication of the paper, the author will be offered a chance to defend his/her paper. If the arguments are found to be unsatisfactory, the manuscript will be retracted and authors found to have been guilty of plagiarism will no longer have papers accepted for publication by journal. All the submitted manuscripts will be firstly checked by using Turnitin program that is already available in the Northern Technical University.