Described is a series of computer tutorials developed to teach students a logical method of problem solving for chemistry. The structure, pedagogy, and problem-solving strategies of the computer software program are described. (CW)

Described are the uses of a spreadsheet program to compute the free energy change associated with a reaction; to model acid/base equilibria; and to solve equilibrium constant expressions. Stressed are the advantages derived from having the spreadsheet perform the multiple, trivial calculations. (CW)

Presented is an illustration of the use of a computer spreadsheet program, Microsoft Excel version 1.5, for solving complicated chemical problems. Examples of spreadsheet output are provided. (CW)

Describes an intelligent tutoring system named MENDEL, including problem GENERATOR, TUTOR, student MODELER, ADVISOR, hypothesis CHECKER, and problem SOLVER. This software may be used by high school or university biology students as a tool for learning concepts and problem-solving strategies in transmission genetics. (YP)

Traces the history of the Text Encoding Initiative (TEI) from the 1987 Vassar Conference to the publication, "Guidelines for the Electronic Text Encoding and Interchange." Explains the types of questions raised and attempts made to answer them. Discusses the organization of TEI committees and the project's future. (CFR)

Maintains that the Text Encoding Initiative guidelines make it possible to encode dramatic works as either an event or a text, but do not permit scholars to do both. Discusses approaches to encoding speeches and other aspects of dramatic texts. (CFR)

This article proposes some techniques for enhancing large-character computer access systems to enable users with partial vision to operate them more easily and efficiently. These techniques involve mapping several areas of an application's screen into large characters and adapting this mapping in a context-specific way. (Author)

This paper reports on a research and development program which developed a more effective interface between personal computer (PC) users with disabilities and computer systems. The program emulates a PC keyboard, enabling disabled PC users to access standard software via a binary (switch) control element. (Author/DB)

This overview of nonexperimental causal research methods focuses on latent variable structural equation modeling using the LISREL computer program. An extended example in special education is used to present LISREL as an extension of structural equations analysis (path analysis) and as a method of reducing the effects of error in research.…

Three item response models were evaluated for estimating item parameters and equating test scores. The models, which approximated the traditional three-parameter model, included: (1) the Rasch one-parameter model, operationalized in the BICAL computer program; (2) an approximate three-parameter logistic model based on coarse group data divided…

This paper summarizes and highlights some of the critical developments, issues, and trends which impact the work of survey research. The issue of preventing or minimizing nonresponse bias by successfully obtaining cooperation from people being surveyed continues to be of concern to survey research professionals. The most effective response rate…

This study examined the effect of type of correlation matrix on the robustness of LISREL maximum likelihood and unweighted least squares structural parameter estimates for models with categorical manifest variables. Two types of correlation matrices were analyzed; one containing Pearson product-moment correlations and one containing tetrachoric,…

The 52 papers in this volume, which represent recent research and applications in the field of computer-based instruction, are grouped under 10 general topic areas: (1) computer-based training; (2) elementary, secondary, junior college, and math education; (3) health; (4) home economics; (5) implementation; (6) mini-microcomputers; (7) PILOT; (8)…

Two distance education courses presented via teleconferencing by the University of Calgary were redesigned to include graphic support utilizing Canada's Telidon videotex system. Data were gathered on both the instructional effectiveness of and student responses to the graphics. While the evaluation pointed out a number of features that needed to…

This paper reviews the basic elements of the EM approach to estimating item parameters and illustrates its use with one simulated and one real data set. In order to illustrate the use of the BILOG computer program, runs for 1-, 2-, and 3-parameter models are presented for the two sets of data. First is a set of responses from 1,000 persons to five…