With the rapid development of information technology, various online education platforms support the sharing of digital educational resources. Because digital educational resources are simple to duplicate and disseminate quickly, there exists copyright infringement, which threatens the interests of copyright owners. In addition, the existing…

Bitcoin is the first major decentralized cryptocurrency with wide acceptance. A core technological innovation of Bitcoin is blockchain, a secure and pseudonymous general ledger that stores every Bitcoin transaction. Blockchain has received enormous attention from both the commercial and academic worlds, and it is generally recognized as the…

The Compact Disc-Read Only Memory (CD-ROM) data format is explained and illustrated, noting current and potential applications. The "5-inch" compact laserdisc is described and photographs of an IBM PC/Hitachi CD-ROM system adopted by Library Corporation to support its MARC database--BiblioFile--are presented. Screen displays for…

Describes the operation and numerous capabilities of a British computerized data retrieval system named Prestel. It provides access, through the regular telephone network and a TV screen, to computer-based information supplied by many companies, agencies and commercial outlets. (GA)

Classifies and briefly describes several types of optical storage media available today--read-only and write-once analog disks, read-only and write-once digital disks and erasable disks. The appropriateness of CD-ROM (compact disk read-only memory) for use in libraries of developing nations is discussed in terms of users' information needs and…

Examines the expansion of data services in Western Europe after the computer revolution. Stresses that distinctive career lines and eventually a distinctive profession must be created to cope with the proliferation of data and the increase in demand for access to this data. (Author/DB)

Reviews types of electronically and optically published media (EOPM) and their various delivery methods, briefly discussing their applications in the library. Highlights include the advantages and disadvantages of a library making use of EOPM and the impact of EOPM on different aspects of the librarian's world. Fourteen sources are given. (EJS)

Considers the future of microforms by surveying the history of their use in libraries; reviewing the literature about them; and comparing them with electronic databases, full text delivery, and laser disks. It is concluded that microforms will continue to be the primary providers of significant but rarely used retrospective materials. (EM)

This current overview of optical disk technology describes the evolving marketplace for optical products, the use of libraries as test sites for prototype CD-ROM (compact disk read-only-memory) products, CD-ROM developments, new optical technologies, and advances in magnetics. A list of some compact disk manufacturers and a glossary of terms are…

Describes three commercial, numeric databases that are available in microcomputer diskette format: Micro/Scan Disclosure; Wharton Econometric Forecasting Associates World Economic Service; and Trinet's Survey of Commercial Buying Power. Advantages and disadvantages of the diskette format, search strategies, and a selected list of eight suppliers…

Describes research aimed at investigating dynamically evolving database environments and corresponding schemata that allow storage and manipulation of variable length data, a variable number of fields per record, variable length records and fields, and dynamically defined objects. Proposes a new framework for dynamic database environments.…

Discusses technology used to preserve, control, index, and retrieve information in newspapers, highlighting ways to record analyses of news stories, storage/indexing systems based on computers, information as salable commodity, preparation of news for electronic storage, answering in-house queries, questions of copyright and invasion of privacy,…

This article explores how knowledge-discovery applications can empower educators with the information they need to provide anticipatory guidance for teaching and learning, forecast school and district needs, and find critical markers for making the best program decisions for children and youth with disabilities. Data mining for schools is…

Response time in large, inverted file document retrieval systems is determined by time required to access files of document identifiers on disk and process a Boolean search request. A specialized computer system has been devised that can perform a complicated sample search involving 70 terms and over 60,000 document references 12 to 60 times…

This article presents a brief history of the videodisc and describes three major current manifestations of this storage medium--read-only, write-once, erasable. The current status of write-once technology, major corporations involved in the field, potential uses for various types of storage media, and software and market trends are highlighted.…