This note takes up the issue of parallel curves while illustrating the utility of "Mathematica" in computations. This work complements results presented earlier. The presented treatment, considering the more general case of parametric curves, provides an analysis of the appearance of cusp singularities, and emphasizes the utility of symbolic…

The central objective of factor analysis is to explain the greatest amount of variance in a data set with the smallest number of factors. Higher-order analysis is an invaluable tool that offers the benefit of parsimony provided by first-order analysis with the opportunity to make data-based generalizations beyond the first-order. Higher-order…

Some techniques used in making animated computer games in order to highlight their mathematical content are presented through specific examples. (MNS)

Provides examples of nested subroutines, focusing on the Gaussian quadrature function and test program (program listings included). Nested subroutines, features of the Gaussian quadrature, and when not to use it are considered. (JN)

Procedures enabling the placement of diacritical markings over a character for printing in PostScript fonts on an Apple LaserWriter printer are described. The procedures involve some programming in the PostScript Language and manipulation of Adobe PostScript fonts. It is assumed that Microsoft Word will be used to create the text to be printed.…

Provides complete listing of an Applesoft arcade-style game which teaches rapid recognition, discrimination, and sequencing of the alphabet. Four levels of play are featured for sequential reinforcement of these skills. The game also trains left-to-right scanning, promotes development of visual-motor integration skills, and develops directionality…

Epicycloids are formed by tracing the path of a fixed point on a circle as it rolls aroung the outside of a larger circle. Examines several possibilities related to epicycloids (and hypocycloids), presenting more mathematical patterns and artistic shapes that result from using several computer programs. Program listings are included. (JN)

Bayesian and classical approaches to classification of vocational data were compared using an educational data set from a longitudinal study of professional growth and development in organizations (P. Ruohotie et al., 1994). Data were from 2,430 workers in companies in Finland who completed a questionnaire with behavior and background statements.…

Discusses properties of epicycloids. (The easiest way to picture them is to think of a piece of radioactive bubble gum attached to a wheel which is rolling around the outside of a larger wheel.) Includes a computer program (TRS-80 color computer) that will graph any epicycloid with integer values for the radii. (JN)

In an effort to identify instructional methods that might improve mathematics learning at the grade 4 level when used in a variety of educational settings under typical conditions, the REL Mid-Atlantic research team looked for promising, replicable practices that were being used broadly by teachers in U.S. schools, for which research showed…

This handbook offers guidance to public broadcasting managers on computer acquisition and development activities. Based on a 1981 survey of planned and current computer uses conducted by the Corporation for Public Broadcasting (CPB) Information Clearinghouse, computer systems in public radio and television broadcasting stations are listed by…

Bootstrap analysis, both for nonparametric statistical inference and for describing sample results stability and replicability, has been gaining prominence among quantitative researchers in educational and psychological research. Procedurally, however, it is often quite a challenge for quantitative researchers to implement bootstrap analysis in…

From 1988 to 1996, employment in high-technology industries shifted toward services. Growth in these industries accounted for all of the net increase in research and development employment in the United States. (SK)

The Office of the State Comptroller in New York audited the City University of New York's (CUNY) Year 2000 compliance efforts for the period of April 1, 1996 through March 31, 1998. The purpose of the audit was to determine whether CUNY's efforts provided reasonable assurance that computer processing will continue without interruption or…

This book contains a reference guide for the use of HOMES, a demographic model and computer program developed to project the number and demographic characteristics of households. Through application of this computer program to standard population projectors, users can retrieve data on: (1) number of households; (2) age and sex of household heads;…