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Wimmer, Hayden – ProQuest LLC, 2013
A large body of literature exists on evolutionary computing, genetic algorithms, decision trees, codified knowledge, and knowledge management systems; however, the intersection of these computing topics has not been widely researched. Moving through the set of all possible solutions--or traversing the search space--at random exhibits no control…
Descriptors: Knowledge Management, Management Systems, Mathematics, Computation
Peng, Peng; Namkung, Jessica; Barnes, Marcia; Sun, Congying – Journal of Educational Psychology, 2016
The purpose of this meta-analysis was to determine the relation between mathematics and working memory (WM) and to identify possible moderators of this relation including domains of WM, types of mathematics skills, and sample type. A meta-analysis of 110 studies with 829 effect sizes found a significant medium correlation of mathematics and WM, r…
Descriptors: Meta Analysis, Mathematics, Short Term Memory, Mathematics Skills
Muldoon, Kevin; Towse, John; Simms, Victoria; Perra, Oliver; Menzies, Victoria – Developmental Psychology, 2013
In response to claims that the quality (and in particular linearity) of children's mental representation of number acts as a constraint on number development, we carried out a longitudinal assessment of the relationships between number line estimation, counting, and mathematical abilities. Ninety-nine 5-year-olds were tested on 4 occasions at 3…
Descriptors: Numeracy, Intervals, Computation, Young Children
Madhavan, Krishna; Johri, Aditya; Xian, Hanjun; Wang, G. Alan; Liu, Xiaomo – Advances in Engineering Education, 2014
The proliferation of digital information technologies and related infrastructure has given rise to novel ways of capturing, storing and analyzing data. In this paper, we describe the research and development of an information system called Interactive Knowledge Networks for Engineering Education Research (iKNEER). This system utilizes a framework…
Descriptors: Engineering Education, Information Systems, Information Retrieval, Social Networks
Ngan, Chun-Kit – ProQuest LLC, 2013
Making decisions over multivariate time series is an important topic which has gained significant interest in the past decade. A time series is a sequence of data points which are measured and ordered over uniform time intervals. A multivariate time series is a set of multiple, related time series in a particular domain in which domain experts…
Descriptors: Multivariate Analysis, Time, Intervals, Decision Making
Fay, Temple H.; Joubert, Stephan V. – International Journal of Mathematical Education in Science and Technology, 2010
In this article we examine 2 x 2 first-order systems of ordinary differential equations and show how to identify separatrices for phase plane portraits when the system has a saddle point critical value. We describe how to use a computer algebra system to generate trajectories from contour plots, when possible, and determine the equation of the…
Descriptors: Calculus, Algebra, Equations (Mathematics), Models
Withers, Christopher S.; Nadarajah, Saralees – International Journal of Mathematical Education in Science and Technology, 2011
The linear regression model is one of the most popular models in statistics. It is also one of the simplest models in statistics. It has received applications in almost every area of science, engineering and medicine. In this article, the authors show that adding a predictor to a linear model increases the variance of the estimated regression…
Descriptors: Regression (Statistics), Computation, Models, Prediction
Winkel, Brian – International Journal of Mathematical Education in Science and Technology, 2010
We describe a modelling activity for students in a course in which modelling with differential equations is appropriate. We have used this model in our coursework for years and have found that it enlightens students as to the model building process and parameter estimation for a linear, first-order, ordinary differential equation. The activity…
Descriptors: Mathematical Models, Calculus, Mathematics Education, Mathematics Instruction
McDowell, J. J.; Caron, Marcia L.; Kulubekova, Saule; Berg, John P. – Journal of the Experimental Analysis of Behavior, 2008
Virtual organisms animated by a computational theory of selection by consequences responded on symmetrical and asymmetrical concurrent schedules of reinforcement. The theory instantiated Darwinian principles of selection, reproduction, and mutation such that a population of potential behaviors evolved under the selection pressure exerted by…
Descriptors: Reinforcement, Behavior, Intervals, Numbers
Tong, Jingcheng; Braza, Peter A. – International Journal of Mathematical Education in Science and Technology, 2002
This note considers continuous functions f on an interval [a, b] and develops sufficient conditions to answer the question, for what points c in the interval is there a rectangle with height f(c) and some width beta-alpha that has a signed area equal to [integral of] beta over alpha f(x)dx?
Descriptors: Intervals, Educational Psychology, Validity, Mathematical Logic