(一) 引言在医学情报学中几乎没有哪些科研项目是以前从未研究过的新项目。许多文献资料系统可检索到与科研课题有关的出版物,其中大多数已经计算机化和能远程存取。这些系统的费用昂贵,但是,一般来说获得与科研课题有关文献的费用少于重复这些课题研究的费用。 (A) Introduction Few scientific research projects in medical information science are new projects that have never been studied before. Many documentation systems can retrieve publications related to research topics, most of which are computerized and remotely accessible. These systems are expensive, however, but generally speaking, the cost of obtaining literature related to research topics is less than the cost of duplicating these research topics.