Presents three text compression methods of increasing power and evaluates each based on the trade-off between compression gain and processing time. The advantages of using hash coding for speed and optimal arithmetic coding to successor information for compression gain are discussed. (26 references) (Author/CLB)

Examines two models to study the consequences for coding efficiency of sample fluctuations, a specific type of error in the statistics on which data compression codes are based. The possibility that random fluctuation can be exploited for data compression is discussed. (six references) (KRN)

Discusses provisions of the Digital Millennium Copyright Act (DCMA) that relate to special librarians and offer a limitation on liability for online service providers. Highlights include eligibility requirements; storing material and referring users to material at other locations through hypertext links or search engines; system caching; and scope…

Discusses data exchange over the Internet and describes the architecture and implementation of an XML document repository that promotes a navigation paradigm for XML documents based on content and context. Topics include information retrieval and semistructured documents; and file systems as information storage infrastructure, particularly XMLFS.…

Examines the role of microfilm in storing information to eliminate digital obsolescence. Discusses the benefits of digital-to-analog microfilm systems; changes in conventional microfilm technology; and the advantages of true hybrid imaging systems that allow retrieval of images from document microfilm, digitally created microfilm or paper scanners…

Gathering and displaying governance documents and photos online can help educate the public, promote transparency, and preserve historical artifacts. Under the leadership of a board chair with lifelong interest in history and respect for the historical record, the Office of the Board of Regents of the University of Texas System has discovered that…

In this article, the authors describe how a time capsule project helped students at Ridgedale Elementary School in Knoxville, Tennessee understand the nature of events and the relationships of events in a segment of history. The time capsule preparation motivated students to hypothesize about important events and significant artifacts of their…

This report explains the importance of keeping personal records, describes types of records to keep, and suggests places in which to keep them and ways to organize them. Guidelines are offered for keeping the following types of records: (1) personal documents (family records, wills, passports, diplomas, and social security cards); (2) property…

This document presents a step-by-step procedure for setting up a document library of personal word processing, database, and spreadsheet files using the Apple IIe computer and the AppleWorks subprogram database. This library, which can serve both as a running record of files created and as a means for easy retrieval, uses 10 fields or categories…

Points out a viable and tested alternative to the use of lengthy account numbers. This alternative uses simple numbers and appends the lengthy numbers with their various sort keys and distribution codes to the tables of account names. (Author/DN)

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 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…