This study attempts to determine which media-exposure models available today are the best. A survey of the literature of the last 20 years is used to provide the basis for assessment of the state of the art of media planning and to draw distinctions between the implicit, naive, subjective, and sophisticated media-exposure models. Discussion of the…

The problem of forecasting monthly demands for library network services is considered in terms of using forecasts as inputs to policy analysis models, and in terms of using forecasts to aid in the making of budgeting and staffing decisions. Box-Jenkins time-series methodology, adaptive filtering, and regression approaches are examined and compared…

FANTAB is a computer program written in Fortran IV which helps design factorial analysis of variance tables and provides formulae for table entries. It is a computerization of a paper entitled: "Rules of Thumb for Writing the Anova Table" (Millman and Glass, 1967). FANTAB is appropriate for factorial models which have two, three, or four…

Ten highly motivated and above-average intermediate algebra students were selected to complete a ten-week schedule of activities involving the mathematizing of some physical representation of a phenomena and the studying of that model. Ten activity-based exercises, most adapted from LABORATORY MANUAL FOR ELEMENTARY MATHEMATICS by Fitzgerald, et…

This case study applies a mathematical model to the Illinois Library and Information Network (ILLINET) Rolling Prairie Library (RPL) System. Given certain dimensions, parameters, and operating policies of a library network, the model calculates probability of satisfying a request, average processing time, average total and unit costs, and average…

This study concerns concrete manipulatives for use in mathematics education, specifically in the realm of negative numbers and the operations on them. The author presents a review of relevant theory, practice, and research and develops guidelines regarding characteristics of manipulative materials. He concludes that present practice in teaching…

Duncan's interpretation of his research on the nature and process of the distribution of rewards in the U.S. stratification system is questioned. Statistical and conceptual flaws are noted in Duncan's work and their implications explored. A reanalysis of primary survey data is presented and, based on a reinterpretation of this data, a…

The study derives a model of the unemployment insurance (UI) system and its relationship to the labor market, estimates it with data from the Detroit Standard Metropolitan Statistical Area, and evaluates its potential use to forecast UI benefit amounts, UI insured unemployment, and UI exhaustions. It further uses the model to analyze policy issues…