Wiswesser Line Notation, a system for representing structural formulas by a single line of common symbols (numerals, capital letters, and three punctuation marks), is gaining acceptance as an effective indexing tool. The resulting notations, denoting specific structural fragments of a molecule, can be retrieved by humans or computer. (Author/JN)

Discusses the multilevel information system (MLIS), a retrieval system that integrates functions typical for database management systems and retrieval-oriented systems and provides several levels of data accessing, each developed for a different class of users. Twenty-two sources are cited. (FM)

These planning and evaluative guidelines for online trainers utilize a sliding scale--from minimal to suggested to optimal--for five types of training sessions: (1) Search Service--Beginning; (2) Search Service--Advanced; (3) Search Service--Subject; (4) Database Producer; and (5) Independent Introductory Workshop. (RAA)

Describes the preparation for conversion, the implementation of the Guelph Documents System (CODOC) to organize and retrieve government documents, and the resulting benefits in the Guelph Public Library. Eight references are cited. (CHC)

This simulated interaction between a human and a microcomputer is presented as an example of one way in which a computer could be used to report data and results from research studies on particular topics in school librarianship. A brief discussion of the example is included. (JL)

Discusses the problem of duplicate citations resulting from file overlaps in multidatabase searching and shows that such duplicates could be identified automatically and eliminated by a host computer as a complementary service to online retrieval. Steps involved in the realization of this service are described, and 11 references are listed. (RBF)

Describes student-produced simulations of four online services--Lockheed DIALOG, BLAISE MARC, BLAISE MEDLINE, and SDC. Intended to teach keyboard use, basic commands, and more advanced techniques, the programs are written in BASIC and transferable to a wide range of computers. Several sample displays and seven references are provided. (RBF)

Surveys the technology of database software and hardware, describing some of the principal issues related to the user's view of data, sharing, concurrent access, security, and integrity. (JN)

Cherry Creek (Colorado) and Los Angeles (California) school districts are using microcomputers linked to central computers to process student data. (Author)

Examines the development and current status of research on personal information systems, i.e., those systems where an individual collects, annotates, and stores bibliographic information according to his own needs and preferences. Effects of computer-based dissemination services on the growth and management of these systems are discussed. Included…

Examines the assumptions which underlie the design of SDI systems with respect to context of use, activities supported by SDI, and characteristics which make documents useful. Relates these assumptions to the failure of SDI to gain widespread acceptance among scientific information users. A 43-item reference list is included. (JL)

Describes a dialog-program which uses basic statements available on a WANG 2200T version connected to a floppy-diskette to cross-reference a given set of keywords, author names, journal names, and specified reference numbers. Special program features are described and two references are listed. (Author/RBF)

Describes an indexing technique based on overlapping word fragments as reference strings that are linked in a directed graph structure which makes possible exact match-, partial match-, and masked-partial match-retrieval and indicates search strategies for each case. Eight figures, two tables, and nine references are provided. (RBF)

Recounts the development of a slide storage and retrieval system at the Philip Morris Research Center in Richmond, Virginia and describes the methods used to classify and access slides in the collection. A reference list and three appendices accompany the text. (JL)

Attractive features of the videodisc, a storage medium of digital and visual information, include large storage capacity, low cost, rapid access, and ease of duplication. Widespread adoption of the videodisc will be determined by availability of appropriate software and funding, and public demand and perceptions about its advantages over other…