This paper reviews the process of development of China s computerized scientific and technological information service.Starting from the middle of 1970s and developing into an embryonic form through the efforts made during the period of the Sixth Five Year Plan, it began to take shape after the period of the Seventh Five Year Plan,came to a turning point in the period of the Eighth Five Year Plan and entered a new stage to develop a nationwide scientific and technological information network and modernize the exchange and sharing of scientific and technological information so is to meet the needs of development .Finally,the paper looks into the prospect for the development during the period of the Ninth Five Year Plan and puts forth some proposals and ideas for the development of a scientific and technological information reaources network in China.
This paper describes the present situation and development of China Public Communication Networks.The four kinds of public switched communication networks are PSTN (SPC systems), PSDN, DDN, and mobile systems.Their basic features and development in China,and the CHINANET-the backborne Network of China Internet, its services and user s application are also introduced.
The concept of CGI (Common Gateway Interface) and the method of using Forms of HTML (HyperText Markup Language) are introduced in this paper. It also describes how the Forms, HTTP and CGI program work together, as well as how to make a CGI program.
This paper describes the generation,concepts,basic features,and the models of a digital library.The authors,especially,present that a dream of the electronic library is able to come true under Internet environment,and a real electronic library model consists of four structure levels which are user interfaces,networks and communications,information resource,and reference service system. There are five functions in the digital library which are digitized documents for various media,storage,access,transmission, privilege and management.The authors are planning to create an embryonic form of a digital library in Shanghai Jiantong University.
Golden Disk Library Integrated System(GDLIS) was based on a RDBMS platform and developed in 1995 by Golden Disk Electronic Company,the pioneer of multimedia application software development and electronic publication in China.This paper introduces the background,objectives and principles of developing GDLIS and the overall structure of GDLIS.The technical highlights on handling MARC and the opinion on selection of development platforms are also presented.
This paper introduces the development process of a multimedia information retrieval room with a Windows NT system,a Client/Server model and a Fast Ethernet Network system.Through these systems the room has been successfuly connected with the CERNET and the Library Computer Management Integrated System.
The paper discusses about evolution of mulitimedia computer network,high speed area network,FDDI network,information databases and multimedia compression technology.
In this paper, some problems in today' s machine translation systems are discussed, and the auther suggests use automatic indexing and automatic abstracting in mach ine translat ion analyges the advantages of doing so.
This paper states the authority file conception and authority control principles of document databases, discussing the relations between the authority records and document databases and introducing the implementation of GDPS relative authority control.
