Distributed Collaborative Virtual Reference Advisory System Of Non-real-time Consultation Scheduling Function And Realization

Virtual Reference Service (VRS) is a very important function of library. The level of VRS incarnates a library's strength and service quality. VRS is a very important subsystem of digital library. This kind of software provides libraries with tools to interact with users in multiple ways including synchronous way and asynchronous way. Synchronous way is realized by chat-online, Page Push, VOIP, cooperative browse technology and so on. Asynchronous way is realized by E_mail, web-form and so on. Perfect Virtual Reference Service can allows readers apply their questions at any moment and everywhere .The answer for difficult questions can be searched over the countrywide range. A single library was restricted by its resource and teachers, so it can not answer all kinds of questions. CALIS digital library system tries to combine the resource of one hundred national key universities in order to provide perfect professional reference service with high quality. So the task become collaborative consultation, and the task need to be transferred and scheduled form one library to another. The scheduling of consultation task is a very important part of collaborative reference service.With the increasing development computer network and database technology, the distributed computing has become a new trend and model of computer application. In this system interoperability is a very important subject.Interoperability in general includes the communication control and transfer between different system .Interoperability namely is the accessing between systems in function and date level. The task of distributed system is realized by Interoperability .So interoperability was the important support for distributed systems.Collaborative Virtual Reference Service (CVRS) is a kind of typical distributed system. In this paper, we do research for asynchronous scheduling problems in CVRS. Some important technology are studied and analyzed as follows:The communication and Interoperability problem in distribute systemThe asynchronous Interoperability problem over Web ServiceThe reliability of message transfers...