1. Uniqueness: Each periodical has a unique ISSN code, which helps to prevent repeated publication and confusion. For example, if two journals have the same name, but their publishing places or contents are different, they need to have different ISSN codes.
2. Easy retrieval: With ISSN code, readers and researchers can find the journals they need more easily. Libraries, databases and other information resources usually use ISSN codes to index and classify periodicals.
3. Quality control: ISSN coding also helps to ensure the quality of journals. Because every periodical needs strict examination and evaluation to obtain ISSN code, this code can be used as a symbol of quality assurance.
4. Easy for statistics and analysis: ISSN coding can help publishers and research institutions to make statistics and analysis of periodicals. For example, they can track the circulation, readership and citation times of periodicals through ISSN codes.
5. Promote international cooperation: Because ISSN code is universal, it helps to promote international academic exchanges and cooperation. For example, journals in China can use ISSN code to cooperate with research institutions in other countries without worrying about the obstacles caused by language and cultural differences.
Generally speaking, ISSN coding plays an important role in periodical identification, retrieval, quality control, statistical analysis and international cooperation. Therefore, both publishers and readers need to understand and pay attention to ISSN coding.