Results 301 to 310 of about 6,262,353 (337)

The place of the variable in the teaching of mathematics

The Mathematics Teacher, 1955
The general concept of a variable is a difficult one. This paper offers suggestions for highlighting some important aspects of this concept.
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Complex Variables in Industrial Mathematics

1988
Complex analysis has long been regarded both as an elegant subject in its own right, and as a powerful tool in applied mathematics. The subject has inescapable limitations, however, and it might be said that it has been superseded by more modern methods.
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Are High-Quality Schools Enough to Increase Achievement Among the Poor? Evidence from the Harlem Children's Zone †

, 2011
Harlem Children's Zone (HCZ), an ambitious social experiment, combines community programs with charter schools. We provide the first empirical test of the causal impact of HCZ charters on educational outcomes.
Will Dobbie, Roland G. Fryer
semanticscholar   +1 more source

Prediction from Latent Classes: A Demonstration of Different Approaches to Include Distal Outcomes in Mixture Models

Structural Equation Modeling: A Multidisciplinary Journal, 2019
Including auxiliary variables such as antecedent and consequent variables in mixture models provides valuable insight in understanding the population heterogeneity embodied by a latent class variable.
Karen Nylund-Gibson, Ryan P. Grimm, Katherine E. Masyn   +2 more
semanticscholar   +1 more source

Simulation of fetal heart rate variability with a mathematical model

Medical Engineering & Physics, 2017
In the clinic, the cardiotocogram (CTG), the combined registration of fetal heart rate (FHR) and uterine contractions, is used to predict fetal well-being. Amongst others, fetal heart rate variability (FHRV) is an important indicator of fetal distress.
Jongen, G.J.L.M., Hout-van der Jagt, M.B. van der, Oei, S.G., Vosse, F.N. van de, Bovendeerd, P.H.   +4 more
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Inequalities and mathematical properties of uncertain variables

Fuzzy Optimization and Decision Making, 2011
Uncertain variables are measurable functions from uncertainty spaces to the set of real numbers. In this paper, some important inequalities of uncertain variables, for example, extension of Jensen's inequality, Liapounov's inequality, and refined Markov inequalities are presented.
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Variability and Functionality in High School Mathematics

The Mathematics Teacher, 1929
The subject of variation as a topic or possibly phase of mathematics is a very important one in the field of the secondary school. In this day, when so much is made of correlations within the general field of mathematics and with other allied fields of science, the study of variation brings out numerous interesting contacts and inter-relations for the ...
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On Problems in Mathematical Physics with Variable Parameter

Journal of Mathematical Sciences, 2017
We consider evolution equations with variable parameters. We obtain new representations of solutions and indicate their applications to inverse problems in mathematical physics.
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First-Year Mathematics-A Challenging Variable

The Two-Year College Mathematics Journal, 1970
In each issue an article will be chosen for this section which the editors believe has special distinction. It must deal with a vital problem that, in the editorial board's opinion, has been handled in an exceptionally scholarly and literate manner.
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Constrained mathematics analysis of uncertain variables

SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics (Cat. No.98CH36218), 2002
Analyses (e.g., safety analyses and reliability analyses) that are based on variable or uncertain inputs need to reflect the ranges of potential output variability or uncertainty. A challenging problem in mathematically processing the operands is that constraints inherent in the problem definition can require computations that are difficult to ...
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