Subroutines which provide efficient access to a directly organized file by blocking and deblocking variable length bibliographic records are described. (Author)

Describes the utility and applications of information retrieval thesauri and the development of the thesaurus for the DISCLOSURE data base. (PF)

False drops occur in a system of random superimposed coding for edge-notched, punched, and feature cards. Formulae for the false dropping fraction are derived, and figures and tables are given for the calculated values in the most popular scheme. (Author/LS)

This paper describes the process of automatic extraction of implicit--global--data from explicit information by file inversion and threading. Each datum is the symbolic representation of a proposition, and as such has a number of movable parts corresponding to the ideal elements of the proposition represented; e.g., subject, predicate. A third…

This form, initially developed from information gathered in an extensive literature search on the subject of storage and care of non-book materials, was designed to assist librarians in evaluating the quality of their storage and care practices for photographs and negatives. The form was field-tested for value and usability in 20 selected…

This instructor's manual is a comparative analysis and review of the various computer programing languages currently available and their capabilities for performing text manipulation, information storage, and data retrieval tasks. Based on materials presented at the 1967 Convention of the American Society for Information Science, the manual…

THE PURPOSE OF THE STUDY WAS TO DETERMINE IF DIVIDING A TRADITIONAL DICTIONARY CATALOG TO CREATE A SEPARATE FILE FOR SUBJECT ENTRIES WOULD RESULT IN MORE EFFECTIVE USE OF LIBRARY CATALOGS. A SET OF SEARCH QUESTIONS WAS DEVELOPED AS THE DATA COLLECTION INSTRUMENT. TWO CATALOGS--THE UNIVERSITY OF ILLINOIS' DICTIONARY CATALOG AND THE UNIVERSITY OF…

The classification may be used (1) to identify cancer research efforts supported by NCI in selected areas of research (at any general or specific level desired), (2) to store information related to cancer research and retrieve this information on request, and (3) to match interests of cancer research scientists against information in published…

This bibliography contains abstracts of 40 unclassified-unlimited reports on microfiche, microfilm and related equipment acquired by the Defense Documentation Center since 1953. Citations are topically arranged in AD sequence, ascending order. The following computer produced indexes are provided: subject, corporate author, personal author,…

A record format and file structure for searching and editing of large textual files have been designed within the 3RIP project. This document describes: (1) general characteristics of the system; (2) implementation of the system on a DEC 10 computer in the programming language, BLISS; (3) external record format; (4) internal format; and (5) file…

This report focuses on the earliest public records in the custody of Oregon, those documenting public actions during the Provisional and Territorial Government period, 1841-1859. It: (1) outlines the concern for preserving and making accessible Oregon public records; (2) examines the factors causing records to physically deteriorate; and (3)…

This booklet describes the various types of microform units available as well as the specific features a buyer may wish to consider. The contents include discussions of microform readers, reader-printers, readers for special applications, and reader printer features. A glossary of terms concludes the document. (WCM)

In order to facilitate the international exchange of machine-readable bibliographic descriptions, the International Federation of Library Associations Working Group on Content Designators was organized in 1973 to arrive at a standard means of identifying data elements or providing additional information about a data element. In three meetings the…

An initial attempt at presenting a coherent approach to the design and analysis of file structures include a discussion of the relative effeciency of different file implementations as a function of usage statistics. The fundamental differences between item and descriptor-organized files are discussed in terms of input-output requirements.…

This report assesses the programs of the Shared Acquisitions and Retention System (SHARES) project during its early phases of development. Emphasis is placed on the limited shared acquisitions and retention programs that SHARES has undertaken during its first year. Recommendations include: (1) development of beginning program of cooperative…