An on-line computer-based circulation control system has been installed at the Northwestern University library. Features of the system include self-service book charge, remote terminal inquiry and update, and automatic production of notices for call-ins and books available. Fine notices are also prepared daily and overdue notices weekly. Important considerations in the design of the system were to minimize costs of operation and to include technical services functions eventually. The system operates on a relatively small computer in a multiprogrammed mode.
A scheme is suggested for the physical arrangement of the contents of a library, in which the library as well as the books are considered as three-dimensional entities, and classification is revised to reflect this concept.
An experiment showing that 3, 1, 1, 1 search keys derived from titles are sufficiently specific to be an efficient computerized, interactive index to a file of 135,938 MARC II records.
A description of the Cataloging and Indexing System (CAIN) which the National Agricultural Library has been using since January 1970 to build a broad data base of agricultural and associated sciences information. With a single keyboarding, bibliographic data is input, edited, manipulated, and merged into a permanent base which is used to produce many types of printed or print-ready end-products. Presently consisting of five subsystems, CAIN utilizes the concept of controlled authority files to facilitate both information input and its retrieval. The system was designed to provide maximum computer services with the minimum of effort by users.
The requirements of a computer-aided circulation system are described. The characteristics of off-line systems are reviewed in the light of these requirements. On-line systems are then reviewed and their economic viability queried. A "hybrid" system (involving a dedicated mini-computer in the library, used in conjunction with a larger machine) appears to be more cost-effective than conventional on-line working.
After outlining the terms of reference of an investigation of user reaction to the selective dissemination of MARC records, a summary of the types of users is given. User response is analyzed and interpreted in the light of recent developments at the Library of Congress. Implications for the future of SDI of MARC in a university setting conclude the paper.
This article describes the need for user-oriented serial lists and the development of such a list in the California Institute of Technology library. The results of conversion from EAM to EDP equipment and subsequent utilization of COM (Computer-Output-Microfilm) is reported.