Without making recommendations, this pamphlet compares Massachusetts taxes with those of other States, projects major tax revenues, compares growth experience of major taxes, considers the incidence of various taxes on high and low income groups, examines recent tax legislation, shows what revenues could be expected with changed tax rates, and…

The material in this booklet is concerned with a discussion and examination of geometric puzzles and the ideas which result from their study. The general idea of graphs is introduced as a tool which can be used to solve geometric puzzles. The fact that working with puzzles can lead to unexpected mathematical discoveries is stressed. Such topics as…

A communication arc from A to B represents the transmission of a single message from the first system A to the second system B. What are all the ingredients of a communication arc required for the sending of a message? What compatibility conditions between these two systems must be satisfied in order for communication to take place? Further, what…

This study attempts to determine whether the human intellectual process of cataloging bibliographic materials, using the Anglo-American (AA-1967) and American Library Association (ALA-1949) cataloging codes, can be simulated by automatic techniques. The specific cataloging process is that which concerns selection of entry. Automatic techniques…

Catastrophes that can have disastrous impacts on information systems are discussed. An information system designer must assume that eventually a disaster will occur, and therefore must plan accordingly. Several approaches to disaster recovery are described, and five key lessons regarding disaster are given. (Author)

Two mathematical brainteasers, with solutions depending on involved trial-and-error processes, are shown to have ingenious solutions. (MP)

It is shown that Trueswell's empirical 80/20 rule arises from type of stochastic model for library loans presented by Burrell and Cane. Particular attention is paid to previously suggested uses of rule in identifying "core collection" for library noting that length of time period is of crucial importance. (20 references) (EJS)

It is not conceivable that in a mixture or compound a component may exist in a negative ratio. Traditionally, therefore, a negative value could not be plotted on triangular coordinates. However, negative values are explicitly allowed, and the results extend the use of triangular coordinates as shown in this article. (JN)

The authors suggest that line graphs that average response frequency over long periods obscure the major rate changes that indicate sources of behavioral control. A scatter plot can make patterns of responding identifiable and, in turn, suggest environmental features that occasion undesirable behavior. Use of scatter diagrams is illustrated in…

Graphics software can assist hearing-impaired students in visualizing and comparing ideas and can also demonstrate spatial relations and encourage creativity. Teachers and students can create and present data, diagrams, drawings, or charts quickly and accurately. (Author/CL)

Presents a laboratory exercise designed to introduce graphical extrapolation. Major advantages of the method are in its simplicity and speed. The only measuring devices are a centimeter ruler and a micrometer caliper to check wall thickness. (JN)

Graphing skills are growing in importance in our information society, presenting facts and concepts in newspapers, magazines, and on television. Graphs incorporated into teaching develop children's problem-solving skills. Ways to use graphs in the classroom are discussed, and examples are given. (MT)