Presents three methods invented by fourth graders for obtaining the arithmetic mean. This presentation is in support of the idea that encouraging children to invent their own mathematical processes is a good way for them to clarify the idea of representativeness and consequently the teacher can facilitate the students' construction of higher…

This article describes a strategy for using Braille Lite, a portable notetaking device that combines synthetic speech and Braille, to produce mathematical expressions that can be easily interpreted by sighted teachers who do not use Braille. The strategy also allows students to review their work tactilely on the Braille display. (Contains 2…

Discusses the collection fusion problem of image databases, concerned with retrieving relevant images by content based retrieval from image databases distributed on the Web. Focuses on a metaserver which selects image databases supporting similarity measures and proposes a new algorithm which exploits a probabilistic technique using Bayesian…

Examines how selected U.S. and Asian mathematics curricula are designed to facilitate students' understanding of the arithmetic average. Discusses similarities and differences of learning goals, focuses, and concepts among U.S. commercial, Asian, and U.S. reform curriculum series. (Author/KHR)

Introduces a model for estimating the amount of revenue a typical student will bring to an institution of higher education. The model uses event history analysis to analyze the length of time a typical student will remain enrolled, and then uses this estimate in combination with tuition numbers to arrive at revenue estimates. (EV)

Describes an instructional sequence that promotes student understanding of a coordinate system while simultaneously facilitating understanding of linear relationships. (Author/NB)

In response to Fischer (HE 527 626), the author considers a proposal to simplify need analysis in Pell grants and other federal need-based student aid as having merit but threatening serious financial harm to many current Pell grant recipients and their institutions. It is argued that focus on budgetary advantages ignores potential dislocations…

In response to Fischer (HE 527 626), the author considers a proposal to simplify and unify need analysis in Pell grants and other federal need-based student aid as appropriate. It is also argued that a single need analysis is needed because the complexity of the existing systems is a barrier to achieving the programs' central goal. (MSE)

Discusses term weighting formulae and their use for selecting new terms to enhance a search statement and for weighting the terms for retrieval purposes once selected. The Swets model of information retrieval system performance is described, an approach to term selection is presented, and future research is suggested. (five references) (LRW)

Discusses a method of cubic splines to determine a curve through a series of points and a second method for obtaining parametric equations for a smooth curve that passes through a sequence of points. Procedures for determining the curves and results of each of the methods are compared. (YP)

Four algebra problems and their solutions are presented to illustrate the use of a mathematical theorem. (CW)

Describes an interface mechanism called "complex view support" to be used with a relational database system (RDBS) in supporting increasingly complex distributed environments in automated library systems. The interface system refers queries to multidimensional tables as well as to flat tables on RDBS and is shown to efficiently support…

Argues that a major difficulty in using Lotka's law in information science arises from the misuse of goodness of fit tests in parameter estimation. Three approaches for studying Lotka's law are presented: an index approach, a time series approach, and a generating mechanism incorporating these two influential variables to derive an equilibrium…

Presents some examples from geometry: area of a circle; centroid of a sector; Buffon's needle problem; and expression for pi. Describes several roles of the trigonometric function in mathematics and applications, including Fourier analysis, spectral theory, approximation theory, and numerical analysis. (YP)

Discusses the master equation of a stochastic model in chemical process systems. Presents a solution technique known as the System Size Expansion. (YP)