Compared with books, periodicals have the advantages of short publishing period, high speed, large quantity, novel content, wide distribution and great influence, and can timely reflect the new achievements, new levels and new trends of science and technology at home and abroad.

(2) extensive content?

Most of the documents published in journals are original papers, and the information provided includes research methods, instruments and equipment, discussion of achievements, references and so on. In addition, the magazine also publishes literature review, dynamic introduction, conference news, book review, new book preview, product advertisement and so on. , the content is very rich. Moreover, journals often publish other types of documents, such as conference papers, scientific reports, dissertations and so on. Important patents are often reported in journals.

(3) continuous publication?

The continuous publication of periodicals is not only conducive to the transmission of information, but also a large number of documents accumulated by them record the development process of a certain discipline or a certain research object historically and systematically. Periodicals have a catalogue in each issue, and various indexes are compiled at the end of the volume or at the end of the year. Some journals also publish multi-volume or multi-year cumulative indexes to facilitate literature information retrieval.

Extended data:

First, the publishing cycle.

Every week, the publishing cycle is the weekend of every week.

Xun magazine, publishing cycle 10 days.

Bimonthly, the publication cycle is 15 days.

Monthly, published for 30 days.

Bimonthly, the publication cycle is two months.

Quarterly, the publication cycle is one quarter, that is, three months.

Semi-annual publication with a publishing cycle of 6 months.

Published in, the publishing cycle is 1 year.

Second, classification

(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, which mainly publish academic papers, research reports, summaries and other articles, are mainly aimed at 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.

Baidu encyclopedia-periodical