As one of the key state scientific and technological projects, China Pilot Digital Library realizes DL resources sharing for the first time in the country. Achievements are made in the design of overall architecture, research on standards and specifications, creation of digital resources and development of application systems, laying a sound ground for the construction of China Digital Libraries Program.
Standardization is a key to the development of digital library.China digital library standardization is a astronomical system work and should contain system hardware flat standard, system software flat standard, develop tools flat standard, Internet applications flat standard, production tools flat standard, production techniques standard, metadata standard, data quality standard, resource construction standard, files standard and compatible with library automatization manage system standard. The standarization should keep to thesep rincip les: p ractice, completeness, recapitulation, recapitulation, innovation and gradualness. After 3- 5 years, the standard of Scholar digital library will be systematism that could guide and push forward our digital library work continuously.
This article gives a systematic introduction about the structure and operation manner of the Agent-Based Architecture for Digital Libraries and puts its focal point on the types of agents and communication patterns among agents.
File compress is a key technology of the realization of digital library. This paper introduces the principle of file compress and its general knowledge, tools and its usage about file compress, points for attention of file compress.
The paper introduces the characters of knowledge database and its great significance to library and it introduces the detailed course of knowledge database making by using KD3.0.
A new method of making the brief records in bibliographic databases into complete ones in batches is introduced in this paper. The feasibility of the method, the implementation as well as the way how to improve the replace efficiency are analysed and described .
Agent servers are extensively used in networks to accelerate the access to the Internet, economize on the occupation of network band breadth and IP addresses, reduce cyber-jam and enhance the security of networks. However if wrongly equipped. An agent Server may cause great economic loss. This paper, with special reference to Microsoft Proxy2.0,describes in detail how to control the users of visitor.
With advanced VB6.0 developmental tool, popular ASP database interface technology and new and original XML display type, we have realized the development and design of standard Literature database system, especially of its main functions such as management and maintenance, network searching etc.
This article introduced the scientific structure system and its logical relationship of SCI, and compared the scientific reference idea of print, diskette and web versions and their connections. The article also explained practical operation of different SCI version and related problems. From this article specialists and scholars may learn to use SCI to know the latest development and trend in their fields.
LSI(Latent Semantic Indexing), which is a method of concept-based retrieval, is different from traditional retrieval which depend on a lexical match between words in user s query and those in documents. LSI can make retrieval accomplished based on the queries and documents meaning relationship. It is a completely automatic yet intelligent method in English textual materials indexing.
This paper focuses on getting an integral knowledge of the excite search engine by the introduction of its working principle and the analysis of its various search functions. Hope this paper will bring some light on the development of search engines.
When register a netweb at search engine,there are a lot of applied skills can be used.And then when users search for correlative network resource,the netweb could be found frequently,and users would visit this netweb more times.
The CD-ROM and Internet search system were compared in search database, search approach, search interfaces, search content, search technology and search quality, and some suggestions about using CD-ROM and Internet search were given.
During searching chemistry and chemical engineering literature in Chinese database retrieval system, in order to sure the searching accuracy and thoroughness, attention should be paid to the use of molecular formula index. This situation is illustrated by several examples in this paper.
The three principal indexes,including science citation index, engineering index and index to science and technology, have several kinds of media, that is, print, online, CD-ROM, and Web databases,in which the latter two are widely used. Based on collections of Tsinghua University Library, this article describes their differences in coverage, characteristics, author field., etc. Methods and techniques of searching complex author index are explored. A brief introduction to some other indexes being frequently used in scient ificevaluat ing activities has been given.
This paper introduces the structure and databases composed of"Web of Knowledge", which is published by ISI company recently. The authors also give soe personal opinions on this platform.
The paper expounds the principles of copyright protection for database,and the dificiencies in this respect.It introduces the main content of sui generis right protection,cooks ahead to the future,makes seme suggestions to protection of database in China.
The essay researches on three downloading software of NetAnts1.2?FlashGet0.86 and DLExpert0.96 in order to improve downloading technology of network information and advance developing and utilizing network information resources.
The paper describes the new database services system introduced by ISI, and discusses the characteristic, user s interface, retrival methods, output formats, saveing and running queries etc.
This paper introduces functions, analyses,over-all design and program arithmetics of the Web securities and finance information collecting system,which is developed by authors.This system is important to solve the contradiction between information increasing and searching, and to promote the theory and practice research of Web information resources management.
The status of Chinese information resource has been improved greatly in the past few years and the economic information recourse system has reached a fairly high level. The article classifies the resource into 10 categories and make a probe to each with typical Web resources.
The development direction of the library is towards the advanced culture,so it should enlarge their serving domain,improve their serving style,study and researd the various new situations of our stock market and offer thoughtful services for the investors in our stock market.
The article analyzed how to do with the relation between the technological digital library and the tradition library,the user,the Internet,the publishers,the nonprofit information service organizations,the foreign technological digital library on the base of criterion the conceptive of technological digital library.
In this paper the author discusses dynamic technology in making Web page on two aspects,1.dynamic content technology in making Web page;2, dynamic expressing technology in making Web page.
This paper discusses how to code USMARC records for electronic resources in leader/06(Type of record) and computer files 008/26 and 006/09(Type of computer file).
This article puts an analysis on the reasons of system data during the operation of Integration System of Literature Management, and arises experience of dealing approaches according to the actual circumstances.
This article discussed the solution of literature transmission system, this system is C/S mode,the Web can make the network library has the function of auto keeping records and stating while present the service of literature transmission to the readers.
TOTALSⅡ(Technology Opulent TRANSTECH Automated Library SystemⅡ)is the computer management integrated system being used by library of hebei university at present. This article summarizes the changes of library circulation brought by TOTALSⅡ, introduces its application and technique in book circulation, and points out the remaining problems.
It is always a difficult question to ensure the library automatic system runs safely and effectively for the factor of technology and management,but people can reduce the rip,by applying a netbar manage system in the library LAN to increase the network and system s safety factor somewhat.
The author states the meaning?content and existing problems on Web pages desing in university library from professional angel, and provides constructive suggestions on corresponding solving method?design skills in this paper.
In order to add the accessories of books in the currency of library,it is a scientific management using the special series bar code in the accessories of books.
It is discussed in this article that the important role and advantage of the microcopy technology in the library collections, and how to use the technology combined with modern equipment in the processing of library collections digitalization.