Generally speaking, students or researchers will check their papers after writing them, which includes using professional duplicate checking systems, such as HowNet, VIP, paperfree, papertime and so on. Schools or institutions will conduct a unified duplicate check after self-examination, usually from April to June every year, to provide students with the service of knowing and checking duplicates.
In addition, the tutor will check the duplicate, usually before the paper is submitted to ensure the quality and academic integrity of the paper.
Generally speaking, the time of paper duplicate checking will vary according to the specific situation. It is suggested that the paper should be re-checked as soon as possible after completion, and the re-checking should be completed within the time required by the school or institution. At the same time, we must abide by the relevant regulations and requirements of schools or institutions to ensure academic integrity and originality.