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对网络文献传递服务及其过程进行了仔细分析,识别出文献传递服务过程中的角色和基本活动,并利用UML中的活动图建立文献传递服务的工作流模型。在此基础上,对文献传递服务工作流模型进行比较、分析,指出无中介文献传递服务的本质是文献检索过程,而有中介文献传递服务本质上是代理文献检索过程,两种文献传递服务的本质差别即为文献检索过程与代理文献检索过程的差别。
The web document delivery service and its process are analyzed carefully, the roles and basic activities in the document delivery service are identified, and the workflow model of document delivery service is established by using the activity diagram in the UML. On the basis of this, we compare and analyze the workflow model of document delivery service, and point out that the essence of documentless delivery service is document retrieval process. However, the service of document delivery service is essentially the process of document retrieval and the two document delivery services The essential difference is the difference between the document retrieval process and the proxy document retrieval process.