Compares WILSONDISC's Index to Legal Periodicals with LEGALTRAC's Legal Resources Index in terms of: contents; searching (including comparison of several identical searches run on both databases); and costs. (MES)

This explanation of how the basic economic model of pricing applies to the CD-ROM industry considers the supply and demand sides of the market and compares three distinct pricing strategies: (1) pricing to maximize profits; (2) average cost pricing; and (3) marginal cost pricing. (EAM)

Compares pricing of seven CD-ROM-based public access catalog systems for libraries of diverse sizes and groupings. Other features of the systems are outlined in the broad areas of database preparation, indexing, database updates, hardware, information retrieval, library controlled elements, interlibrary loan, reports, user support, future…

Describes a study that compared the "Video Source Book,""Variety's Complete Home Video Directory," and OCLC in order to judge their comprehensiveness, currency, uniqueness, and redundancy in cataloging videos. The strengths and weaknesses of each source are discussed and suggestions for further research into the bibliographic…

Describes Ulrich's PLUS (a CD-ROM version of Ulrich's serials directories) and EBSCO's CD-ROM version of "The Serials Directory," and compares the two in terms of their use as reference tools. Areas discussed include database content, user aids, system features, search features, and a comparison of search results. Equipment requirements…

Explores the new storage technology of optical data disks and introduces a data structure, the inverted signature tree, for storing data on optical data disks for efficient text searching. The inverted signature tree approach is compared to the use of text signatures and the B+ tree. (22 references) (Author/CLB)

Compares database characteristics, access, display, editing, new records, hard copy products, hardware, and price of CD-ROM catalog production products from seven vendors: Gaylord Information Systems; General Research Corporation; The Library Corporation; OCLC; Solinet; Utlas; and the Western Library Network. (MES)

Discusses the cost of constructing a hypertext database and suggests cost forecasting approaches that can be used to determine whether organizations can internally fund a hypertext database, or whether producers can afford to market hypertext databases. Production costs in differing hypertext strategies are also compared. (27 references) (LRW)

Describes the experiences of the American Society for Training and Development library with the CD-ROM version of ERIC. The following topics are discussed: (1) installation of the CD-ROM system; (2) CD-ROM vs. online searching; (3) cost/benefit of CD-ROM; (4) patron response; and (5) future plans. (1 reference) (MES)

Presents the results of a comparative evaluation of four CD-ROM retrieval software packages using the Revised Richards-Brown CD-ROM Software Evaluation Model. CD Answer, SPIRS, KAware2, and ROMware are evaluated, and results indicate that SPIRS and CD Answer are the favored packages. (LRW)

Investigated differences in the level of young readers' reading comprehension when one group of students read an interactive CD-ROM storybook and another group of students read the same story from a printed book. Discusses results of a univariate analysis of variance that was used to compare scores on oral retellings and comprehension questions.…

Reports results of a comparison of the Academic Index on CD-ROM and four indexes on the OPAC (online public access catalog) at Brooklyn College (New York): General Science Index, Humanities Index, Readers' Guide to Periodical Literature, and Social Science Index. Coverage of the "New York Times" was found to be important. (LRW)

Discusses the results of a survey of commercial CD-ROM databases and compares them with previous annual surveys. Topics discussed include the rapid growth in number of available titles; types of databases; subject areas; hardware requirements; frequency of updates; prices; and CD-ROM's potential as a publishing medium. (seven references) (LRW)

Introduces the multicharacter trie as an index structure that can improve the time needed for retrieving full-text materials stored on CD-ROMs. The advantages of this structure compared to other structures are described, and experimental results comparing it to the widely used B+ tree and other structures used for full-text retrieval are…

This study examined the effectiveness of a simple browse search strategy and a more complex analytical strategy with 25 high school students, using an electronic full-text encyclopedia. Captured keystrokes and student essays were analyzed for retrieval performance and information application. No significant differences between types of search…