Describes a computer model characterizing the balance of soil-plant Nitrogen that allows students to see the likely consequences of different biological and weather-related parameters. Proposes three uses for the model: (1) orienting beginning students to understand the soil Nitrogen cycle; (2) providing information for advanced students; and (3)…

A proposed model for the validity of measures of professional competence treats validation as the evaluation of inferences drawn from test scores, focusing on evaluation, generalization, and extrapolation. The model is used to indicate strengths and weaknesses of assessments of professional competence: observations of performance, simulations, and…

Describes experiential learning instructional model and simulation for student principals. Describes interactive laser videodisc simulation. Reports preliminary findings about student principal learning from simulation. Examines learning approaches by unsuccessful and successful students and learning levels of model learners. Simulation's success…

Reacts to Ohlsson, Ernst, and Rees' paper by initially discussing the costs of methodology that utilizes artificial intelligence (AI) to model cognitive processes. Raises three concerns with the paper: insufficient clarification of the meaning of conceptual versus procedural understanding of base-10 subtraction; realism of the learning model; and…

Considers the role of educational technology in two views of the school reform movement: one that demands more from the existing educational system, and one that calls for restructuring of the existing system. The effectiveness of technology is addressed, models for technology use are described, and technology and constructivism are discussed. (31…

Provided are three program listings which may be used to illustrate this fractal figure. Extensions of these algorithms and their use in the study of chaos and fractals are suggested. (CW)

Describes some alternatives to dissection offered to teachers through the National Anti-Vivisection Society (NAVS) and other sources. These include models, CD-ROMs, and software that enable students to click on scalpels, scissors, and other instruments to cut through videotaped specimens. Also details the Dissection Hotline and the Dissection…

This study addresses several common shortcomings of current university campus sustainability initiatives, including a lack of attention to integrative issues such as land use, housing, and transportation, and a generally reactive rather than proactive approach to sustainability. To engage these concerns, we develop a model for assessing the…

Students are, increasingly, digital content producers, and participate extensively in evolving online social networks. The emergence of the former represents subtle changes in students' experience of images, audience, copyright, ownership of learning, and technology. Experiencing the latter places students in an awkward position in terms of…

The development of the DETECT procedure marked an important advancement in nonparametric dimensionality analysis. DETECT is the first nonparametric technique to estimate the number of dimensions in a data set, estimate an effect size for multidimensionality, and identify which dimension is predominantly measured by each item. The efficacy of…

In this article, we formulate a nonlinear structural equation model (SEM) that can accommodate covariates in the measurement equation and nonlinear terms of covariates and exogenous latent variables in the structural equation. The covariates can come from continuous or discrete distributions. A Bayesian approach is developed to analyze the…

The Wernicke-Lichtheim-Geschwind (WLG) theory of the neurobiological basis of language is of great historical importance, and it continues to exert a substantial influence on most contemporary theories of language in spite of its widely recognized limitations. Here, we suggest that neurobiologically grounded computational models based on the WLG…

The traditional medical curriculum and internships must be supplemented by standardized teaching modalities, such as computer-assisted instruction using patient simulators. A patient simulator is defined as a representation of a clinical situation in which an individual conducts the diagnosis and management of a patient. Advantages include…

This document on contingent student assistance repayment plans in Ontario universities contains a paper on policy options for repayment plans and the manual for a simulation model for testing policy options. The policy options paper begins by describing the contingent repayment concept in which the test for receiving a public subsidy is shifted…

This study used Markov chain matrices to simulate the effect of varying degrees of change in student characteristics on retention and graduation rates. Data were applied to a 1-year enrollment transition matrix that tracks how students of each class level progress into the same or higher class levels, to a completed degree, or to non-returning…