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科技期刊是科技情报的主要来源,是科技情报工作的重要基础。据文献报道,从科技期刊所得到的情报占整个情报来源的65～70％,有的甚至占90％以上。然而对某一学科或专业来说并不是所有科技期刊都同等重要。一个基层科研、生产单位订阅本专业及相关专业期刊总数的5～15％,即可获得50％的有关情报.由此可见,科技期刊确有主次之分,简言之,可以把少数载有某一学科大量有关文献的期刑称为核心期刊。科学地确定学科或专业的核心期刊具有重要的意义。其一,可以帮助科技人员缩小查阅范围,获得高密度的情报源,节省查阅文献的大量时间和精力;其二可节省经费,用少量经费获得最大限度的科技资料,建
Sci-tech periodicals are the main source of sci-tech intelligence and an important foundation for sci-tech intelligence work. According to the literature, intelligence from scientific journals accounts for 65-70% of the entire intelligence source, and some even account for more than 90%. However, not all science journals are equally important to a subject or profession. A grass-roots research, production units subscribe to the professional and related professional journals 5 ~ 15% of the total, you can get 50% of the relevant information.Thus, science and technology periodicals have primary and secondary points, in short, There are a large number of relevant documents in a subject period known as the core journals. Scientifically determine the discipline or professional core journals is of great significance. First, it can help scientists and technicians narrow the scope of access, obtain high-density intelligence sources, and save a lot of time and energy in accessing the literature; secondly, they can save funds and obtain the maximum scientific and technical information with a small amount of funds