On basis of networking environment, this paper discusses digitalization of information resources, access and ownership of information resources, document delivery and its obstacles.

Being a communication protocol for Internet,HTTP plays an important role for WWW service. This paper describes experience in the process of developing WWW server for DataTrans 1000 Integrated Library System. The WWW server developed by Beijing DataTrans Software Corp. Ltd is highly integrated with DataTrans 1000 database engine. The special protocol DTLP is also introduced.

The paper givers an analysis of the basic structure and functional process of meta search engines, and describes with examples the categories and characteristics of these new search tools.

A new infA new information retrieval system based on push technology is presented in this paper.In view of existing situation of Internet in China,if using this system,the duplicate information flow can be decreased,the efficiency of using the Internet improved,time and fee saved,and the useless information can be controlled on the same time.This system is suitable for universities and enterprises,and gives a new method in using the Internet.ormation retrieval system based on push technology is presented in this paper.In view of existing situation of Internet in China,if using this system,the duplicate information flow can be decreased,the efficiency of using the Internet improved,time and fee saved,and the useless information can be controlled on the same time.This system is suitable for universities and enterprises,and gives a new method in using the Internet.

Internet in library is widely developing, and the security of information and system is worthy of attention,more and more.This paper deals with the content and principle of design for the security of Internet.It highlights the encrypting of informational channel and the main types of encrypting.And it gives some reasonable and necessary countermeasures.

This paper introduces the concept and function of firewall, and summarizes the basic classification and system constitution of firewall. The artice also further analyzes the security strategy and packet filters rules of firewall. Furthermore the author indicates the limit of firewall and puts forward the integrally solving scheme of network security.

This article introduces Deja News search engine of usenet newsgroup over Internet,and summarizes its main function,characteristics,search methods and skills,at last the author make an objective appraisal of the use effect of Deja News search engine.

This paper reviews the development,cataloging methods,structures of the reference books of the ring system compounds in CA,and illustrates the seaching ways and methods with the examples of "Parent Compound Handbook".

World wide Web contains a lot of valuable information,wich includes text,voice,and image.It is the most difficult for users to find the most needed information promptly and precisely from a sea of information.This article analyses reasons why information retrieval is so difficult,then introduces several important Chinese and English search engines,provide skills of how to search information roundly,precisely and promptly.

This paper reviews the library development under the demends and stimulation of the contenmporation information technology.It also points out the confronting problems and research dirctions for the contemporary libraries,and discusses in depth on the concepts,technology,advantages,and its significance of the Java computing in library modernization.

This paper presents the xinshidai knowledge based Computer aided indexing system which is designed and developed by the CDSTIC library and has been used for more than one year. Its system design,somposition, function modulars and main features are briefly presented.

Introduction to the history and status of the establishment of shenzhen library multimedia reading room, some suggestions on building the digital library.

In this paper a general introduction is given of CAJ-CD(China Academic Journals - CD-ROM),the first integrated fulltext-retieval electronic periodical in China.And its functions and characteristics are discussed.For the further use,some trial practices are done.

Some problems which exist in the development of CD-ROM retrieval in our country such as:unstandardized systems,verified standards and different applying conditions were analysed in this paper.While indieating great difficulties on system management and usage brought by these problems,the author pointed out some resolving methods according to his own experiences,especially on how to use windows 95 to manage CD-ROM retrieval system.These experiences were offered to those who doing the same work as to give better service to readers.