The resource-oriented digital library, the system-oriented digital library and the service-oriented digital library best illustrate the development phrases of the digital library. The service-oriented digital library should consist of the following components: three kinds of resources, two service platforms, and one portal. The virtual reference system, as one of two service platforms, is playing an important role in the service-oriented digital library. A distributed collaborative virtual reference system and its framework are presented in the paper, and an automatic task scheduler for the synchronous reference and the asynchronous reference is also described in detail.
黄敏,林皓明,金毅. 分布式联合虚拟参考咨询系统及其调度机制[J]. 现代图书情报技术, 2005, 21(4): 18-21.
Huang Min,Lin Haoming,Jin Yi. Distributed Collaborative Virtual Reference System and Its Scheduler Mechanism. New Technology of Library and Information Service, 2005, 21(4): 18-21.
1黄敏，杨宗英，林皓明. 网上参考咨询服务的主要形式及发展趋势. 大学图书馆学报， 2003，21(1): 33-36
2Wasik, Joann M.. Building and Maintaining Digital Reference Services. http://www.michaellorenzen.com/eric/reference-services.html (Accessed Aug.10, 2004)
3Gobinda G. Chowdhury. Digital libraries and reference services: present and future. Journal of Documentation, 2002，58(3):258-283
4Catherine Jane, Dawn McMillan. Online in real-time? Deciding whether to offer a real-time virtual reference service. The Electronic Library, 2003，21(3): 240-246
5Lesley M. Moyo. Reference anytime anywhere: towards virtual reference services at Penn State. The Electronic Library, 2002，20(1):22-28
6Barbara Quint.. QuestionPoint Marks New Era in Virtual Reference. Information Today, 2002，19(7):50-54
7Question Interchange Profile (QuIP). http://www.vrd.org/Tech/QuIP.shtml (Accessed Aug.10, 2004)
8Dublin Core Metadata Initiative (DCMI). http://dublincore.org/ (Accessed Aug.10, 2004)
9Question/Answer Transaction Protocol (Draft for Trial Use). March 17, 2004. http://www.loc.gov/standards/netref/qatp-trial.pdf (Accessed Apr.5, 2004)
10Kaba Abdoulaye, Shaheen Majid. Use of the Internet for reference services in Malaysian academic libraries. Online Information Review, 2000，24(5):381-389
11Gobinda Chowdhury, Simone Margariti. Digital reference services: a snapshot of the current practices in Scottish libraries. Library Review, 2004，53(1):50-60
12Rory Patterson. Live virtual reference: more work and more opportunity. Reference Services Review, 2001，29(3):204-210
13Wayne Daniels, Kathy Scardellato. Past into future: capturing library expertise in a virtual library. Library Hi Tech, 1999，17(2):181-188
14Catherine Jane, Dawn McMillan. Online in real-time? Deciding whether to offer a real-time virtual reference service. The Electronic Library, 2003，21(3): 240-246
15James A. Stemper, John T. Butler. Developing a model to provide digital reference services. Reference Services Review, 2001，29(3):172-189
16黄敏,林皓明,杨宗英. 分布式联合虚拟参考咨询系统的建设. 高校图书馆工作，2003，23（6）：18-20，39
