Results from two Monte Carlo studies in item response theory (comparisons of computer item analysis programs and Bayes estimation procedures) are analyzed with inferential methods to illustrate the procedures' strengths. It is recommended that researchers in item response theory use both descriptive and inferential methods to analyze Monte Carlo…

Describes a project in which graduate students with knowledge engineering experience used five different microcomputer-based shells to build a prototype application of an expert system to assist library patrons with business reference questions. The strengths and weaknesses of each product are discussed and compared. (seven references) (CLB)

Identifies five design requirements for electronic encyclopedias, based on the content and structure of printed encyclopedias and the uses that people make of them. Three existing hypertext programs (Owl International's Guide, HyperCard, and HyperTIES) are compared in terms of their ability to satisfy these design requirements. (CLB)

Compares information requirement-elicitation (IRE) methods for decision support systems (DSS) with knowledge acquisition (KA) methods for expert systems (ES) development. The definition and architectures of ES and DSS are compared and the systems' development cycles and IRE/KA methods are discussed. Differences are noted between ES and DSS…

Presents results of searching seven World Wide Web (WWW) databases with the same three questions and evaluates the performance of each database in answering the questions. Tables show search results and basic database information. Sidebars list WWW databases not studied and address the future of Web searching and fee-based WWW databases. (JMV)

Examines The Internet Adapter (TIA), an Internet protocol that allows computers to be directly on the Internet and access graphics over standard telephone lines using high-speed modems. Compares TIA's system requirements, performance, and costs to other Internet connections. Sidebars describe connections other than TIA and how to find information…

The research reported in this article provides descriptions of design activities and of the evolving designs of expert procedural and expert object-oriented (OO) designers and for novice OO designers with extensive procedural experience. Analysis of procedural and OO designers, in terms of their cognitive activities, design strategies, and final…

Sixty-three undergraduates who used both the System of Interactive Guidance and Information and SIGI PLUS rated them comparably in terms of the dimensions of analysis, synthesis of options, and general helpfulness. Ratings were not influenced by career choice, vocational education, information needs, or year in school. Thirty-nine preferred SIGI…

Discusses children's ability to distinguish fantasy from reality in video games and suggests that there is potential for creative innovative software and graphics. Virtual reality is described and compared to books, and learning about all new electronic genres in addition to the best existing ones is advocated. (EAM)

Discussion of structural knowledge assessment for large groups focuses on the features of a "KNOT" computer program which uses a network similarity index (NETSIM) to compare novice and expert concept maps. Treatment in three high school physics classes investigated reliability as well as content, construct, concurrent, and predictive…

Describes an experiment that evaluated features of TEXNET abstracting software, compared the use of keywords and phrases that were automatically extracted, tested hypotheses about relations between abstractors' backgrounds and their reactions to abstracting assistance software, and obtained ideas for further features to be developed in TEXNET.…

Interviews were conducted with 263 licensed users of training software, 68 of whom had used computer-based training (CBT), instructor-led training, and video tutorials. Videos were deemed the least useful. Instructor-led training had the most feedback and media richness, but CBT was an effective low-cost alternative. (SK)

Explores economic aspects of digital journal production and delivery using Ithink Analyst, a modeling software package. Three models were developed and simulations were used to monitor the effect of variations in the values of key model elements. Discusses results that show staff costs and overhead are the most substantial costs for scholarly…

Presents a comparative study of the effects of feedback on students who learned to solve algebraic factorization problems in an intelligent learning environment. Concludes that when the same error comments were used in both experiments, similarities were observed in the learning paths of the respective student groups. Contains 41 references.…

In teaching undergraduate time series courses, we have used a mixture of various statistical packages. We have finally been able to teach all of the applied concepts within one statistical package; R. This article describes the process that we use to conduct a thorough analysis of a time series. An example with a data set is provided. We compare…