A large-scale selective dissemination of information (SDI) system which is in operation at the Agricultural Research Service is described. The unique characteristic of this system is that the users develop and modify their own profiles. The implications of this user-dependent approach for information system planners are discussed. (2 references)…

Discusses technological developments causing changes in personal information systems: increase in commercial support services; proliferation of microcomputers; capability to download from secondary services into private files; and developing desire to utilize functions such as electronic mail and automated office functions. Appendices list 21…

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…

The effects of personal systems on formal library and secondary information services use are analyzed. Conclusions are that personal information systems are not personalized libraries;'' formal library services should concentrate on developing complimentary programs. (9 references) (Author)

Reviews recent progress in the development and use of online retrieval services, integrated online library support software, and communication and networking standards. A description is provided of a prototype system that would combine a gateway capability with a locally managed facility to meet a library's total needs. (EM)