Empirically evaluates three measures of effectiveness of school district cash management: the rate of return method in common use and two new measures--efficiency rating and Net Present Value (NPV). The NPV approach allows examination of efficiency and provides a framework for evaluating other areas of educational policy. (Author/IRT)

Theoretical and research literature on learner, program, and adaptive control as forms of instructional management are critiqued in reference to the design of computer-based instruction. An adaptive control strategy using an online, iterative algorithmic model is proposed. (RAO)

The average citation per article in chemistry by age of citation is related to the Poisson frequency distribution. This provides a formula for calculation of a half-life for chemistry which depends on the structure of the research front exhibited in the literature. (Author/FM)

Fifteen examples using different formulas for calculating degrees of freedom for power analysis of multiple regression designs worked out by Cohen are presented, along with a more general formula for calculating such degrees of freedom. (Author/JKS)

Examines the main mathematical approaches to information retrieval, including both algebraic and probabilistic models, and describes difficulties which impede formalization of information retrieval processes. A number of developments are covered where new theoretical understandings have directly led to improved retrieval techniques and operations.…

A three-dimensional theory of frustration-aggression is presented. It is proposed that aggressiveness can be measured by computing the kinetic energy of a response. Aggressiveness is equated with energy state. Experimental and laboratory procedures are outlined. (Author/BEF)

This article deals with the problems of modeling the population densities of cities. Two types of models, the quadratic gamma and the equilibrium, are discussed and compared. (Author/MK)

The necessity of postulates of incidence and order is demonstrated by several examples of models for given axiomatic systems. Interdisciplinary interpretations are given. (MP)

Investigates two opposing views of creativity, that of the Freudian psychologists vs. the interpretation of humanistic psychologists, and offers a compromising, perhaps more gestalt solution, along with a new mathematical model and ideas for research in developing a more complete theory of creativity. (Author/RK)

A difference equation model of a university budget system is proposed and analyzed. The conditions for first-order and second-order dynamic equilibrium are determined, and it is shown that first-order equilibrium provides a useful criterion for financial health. (Author/JG)

Deals with decision-making in the light of monetary values, with emphasis on minimizing educational losses. (Author)

The Activity Vector Analysis is a short personality measure, widely used in industry for personnel selection, placement and assessment. This paper questions the statistical basis of the measure as it has appeared in the literature. Recommendations are made for revision of the measure and for resolution of theoretical incongruencies. (Author/JKS)

Recent advances in item analysis have provided greater capabilities for the analysis of tests, but have also significantly increased the gap between the theory and practice of item analysis. This paper traces the lines of development in item analysis under latent trait theory. (MV)

Treats the proportion of dropouts from secondary schools as leading indicators of the educational system's performance and reviews the use of certain variables for the prediction of dropout flows. The underlying relationships are studied in the form of a two-equation econometric model. (Author/IRT)

Proposes a mathematical model using the probability formalism to explain why a geometrical law is observed in distributions related to library circulation data. Highlights include techniques based on convolution theory; Lotka's law; and Bradford's law. (Author/LRW)