The application and development of modern information technology makes our social life change qualitatively,modern electrical publication is an example. This paper tries to disclose what people prefer and the selected orientation of social trend by analyzing it.Electrical publication has great vitality and with the shortening of the period of coexistence with the traditional publication,the period of its common use will come.Electrical publication will promote further the success of information revolution and the maturity of information society.
This paper discusses the characters of electronic journals and how to cataloge electronic journals using USMARC format.
This article describes the three development stages of Ameircan electronic encyclopedias,characterized by the fulltext, multimedia CD-ROM and Web version.It also analyzes the contents and technical features of its data sources,integration degree of content,updating frequency and retrieval ways.And forecasts the trend of electronic encyclopedias.
This paper introduces the retrieval methods and practice of several databases on Sci-Tech information resources on the Internet.
This paper presents a new method of automatic indexing and retrieval.The approach is to take advantage of terms with documents (“latent semantic-structure”)in order to improve the detection of relevent documents on the basis of terms found in queries.A particular technique used is singular-value decomposition in which a large term-document matrix is decomposed into a set of korthogonal factors.The original matrix can be approximated by linear combination from the factors set.Documents and queries are represented as vectors for med from weighted combinations of these factors. The relevancy prediction is achieved by comput ing the similarity of query and documents.
Chinese word automatic segmenting is the basis of machine translation and indexing and intellectual retrieve and understanding & handling of natural language.This paper summarizes the method & positive result of chinese word segmenting in the past ten years,and analyzes characteristic of existing word segmenting.The author puts forward new ideas about combining nerual network with expert system to set up an integrated chinese word automatic segmenting system.
This paper discusses the functional structure system framework,application process system and database structure for establishing a province-wide resource-sharing network by using browser/server/database mode and firewall technique and based on Intranet technology.
This paper introduces how to reproduce the data of CD-ROM database on the hard disk of Windows NT server and then retrieve them from clientscomputers with an aim at making CD-ROM databases available on network.
This paper discusses the real meaning and the information value of applying CD-ROM databases. It also puts forward the assessment scope and the technical reguirements for data quality, retrieval technology and the maintainance of CD-ROM databases from the view point of useres as well as several tactics for selection according to the features of subscription to the CD-ROM database.
Combining with the actual situation of party school libraries in the railway system, this paper makes a comprehensive analysis of the condition of network communications the status quo of computer application in the course of development of library computer network. On that basis, it also introduces their practical experences in this line.
This paper introduces the concept and construction of the MARC,focusing on the discussion about the operational skill of the MARC file,including how to read and write MARC file and how to realize the data transformation.
This article gives the simple concept of system model of automated library system. Then it mostly tries to study how to make library managements policy for director of library in the system model.It discusses four main functions of policy making,such as the plan of book acquisition,the decision for collection organization,the measure of library funds,and the management of business evaluation.
This paper analyzes the problems arising in using the chinese scientific and technical journal database and its drawbacks and them puts forward some suggestions for improvement. It also introduces some experiences in using it.
This paper introduces the detailed course of computerbased reader card-making by using VB. Then it makes a comparison between two kinds of output formats and two kinds of methods of making reader cards, which shows that computerbased card-making has more advantages and flexibilitty compared with the traditional card-making.
