1. Journals: Journals are published by legally established periodical publishing units. Periodical publishing units must be approved by the General Administration of Press and Publication to publish periodicals, and hold a national unified serial publication number.
2. add:? The special needs of newspapers and periodicals temporarily increase the length of brochures; Extra space or separate brochures for newspapers and periodicals on anniversary or when necessary.
3. Special issue: a newspaper (or a combination of several pages of a newspaper) or magazine devoted to a certain content; Compilation of academic research papers.
Second, the hair cycle is different.
1. Periodical: The periodical distribution cycle varies according to different periodicals, such as weekly, and the publication cycle is every weekend; Biweekly, published every two weeks.
2. Supplement: According to the regulations of the General Administration of Press and Publication, each legal periodical can be supplemented twice a year. The competent unit, organizer and serial number of the supplement are completely consistent with the publications published in the normal cycle, and cannot be called illegal or illegal publications.
3. Special issue: The difference between special issue and general issue is that the cycle of the paper is shorter, mainly around a certain topic.
Third, the characteristics are different.
1. Periodicals: All official periodicals have gone through the process of informal periodicals. Official periodicals shall be examined and approved by the Press and Publication Administration and the State Science and Technology Commission within the agreed number and incorporated into the "unified domestic serial number". The application for running a journal is relatively strict, which requires a certain publishing strength. Official periodicals have an independent publishing policy.
2. Supplement: The supplement of popular periodicals is usually used to publish picture books, anthologies or commemorative special issues. Academic journals usually arrange some manuscripts with a certain level in supplements that can't be published in periodicals with normal cycles, so the academic influence of supplements is weaker than that of periodicals with normal cycles.
3. Special issue: The content contained in the special issue is more realistic and contemporary; Explaining, supplementing or extending the news events reported in the news edition with non-news words as the main form; The content of the special issue abbreviation is static, but it borrows a dynamic header.
Taking the news and publication volume of Encyclopedia of China as the representative, the periodicals are divided into four categories:
(1) General periodicals, which emphasize knowledge and interest, have a wide readership, such as People's Pictorial and Popular Movies in China, Time and Reader's Digest in the United States, etc.
(2) Academic journals, mainly publishing academic papers, research reports, reviews and other articles, mainly for professional workers;
(3) Industry periodicals, which mainly report the products, market conditions, management progress and trends of all walks of life, such as motorcycle information in China, Japanese furniture, office equipment and products.
(4) Search periodicals, such as national newspaper index, national new bibliography, American chemical abstracts, etc.