期刊文献不同于其它类型的文献,其特点之一就是周期短、传递信息快,具有一定的时效性。这种时效性的产生来源于刊物本身的内容,其内容是随着社会形势的发展变化而变化的,由于政治、经济、文化、科技、生产等诸方面客观环境所制约,致使期刊利用的价值发生变 Journal literature is different from other types of literature, one of its characteristics is the cycle is short, fast delivery of information, with a certain degree of timeliness. This kind of timeliness arises from the content of the publication itself. Its contents change with the development and changes of the social situation. Due to the objective environment of politics, economy, culture, science and technology, production and other aspects, the value of the periodical utilization Has changed