Results 51 to 60 of about 283,222 (186)

Constructing mathematical meanings with digital tools: design, implementation and analysis of a teaching activity in a distance education context

open access: yesInteraction Design and Architecture(s), 2020
This paper presents and analyses a teaching experiment, carried out with five 12thgrade students, in a distance education context during the pandemic, in May 2020.
Eleonora Faggiano, Federica Mennuni
doaj   +1 more source

Dynamic Rotation and Stretch Tensors from a Dynamic Polar Decomposition [PDF]

open access: yesarXiv, 2015
The local rigid-body component of continuum deformation is typically characterized by the rotation tensor, obtained from the polar decomposition of the deformation gradient. Beyond its well-known merits, the polar rotation tensor also has a lesser known dynamical inconsistency: it does not satisfy the fundamental superposition principle of rigid-body ...
arxiv  

MICZ-Kepler = dynamics on the cone over the rotation group [PDF]

open access: yes, 2013
We show that the n-dimensional MICZ-Kepler system arises from symplectic reduction of a simple mechanical system on the cone over the rotation group SO(n). As a corollary we derive an elementary formula for its general solution. The punch-line of our computation is that the additional MICZ-Kepler $|\phi|^2/r^2$ type potential term is the rotational ...
arxiv   +1 more source

A Note on Consistent Rotation Maps of Graph Cartesian Products [PDF]

open access: yesarXiv, 2021
Given two regular graphs with consistent rotation maps, we produce a constructive method for a consistent rotation map on their Cartesian product. This method will be given as a simple set of rules of addition and table look ups. We assume that the combinatorial construction of both consistent rotation maps has occurred before we construct the ...
arxiv  

Geometry Concept on the Motifs of Woven Fabric in Kefamenanu Community

open access: yesJournal of Research and Advances in Mathematics Education, 2019
For the Kefamenanu community, the motif serves as the identity of the person who wears it. Nevertheless, the woven fabric must be present at cultural occasions, welcoming guests, and death ceremonies.
Yohanis Ndapa Deda, Stanislaus Amsikan
doaj   +1 more source

Exploring the role of spatial ability in the mental representation of word problems in mathematics

open access: yesFrontiers in Education
Problem solving is important to many activities, both in a learning context and in everyday tasks. We can be challenged to solve what later turn out to be very simple problems.
Gavin Duffy, Sheryl Sorby, Brian Bowe
doaj   +1 more source

The role of frontal and parietal cortex in the performance of gifted and average adolescents in a mental rotation task.

open access: yesPLoS ONE, 2020
Visual-spatial abilities are usually neglected in academic settings, even though several studies have shown that their predictive power in science, technology, engineering, and mathematics domains exceeds that of math and verbal ability.
Renata Figueiredo Anomal   +8 more
doaj   +1 more source

Perturbation Theory for the Quantum Time-Evolution in Rotating Potentials [PDF]

open access: yesContemporary Mathematics Vol. 307, 2002, p. 113 - 127, 2002
The quantum mechanical time-evolution is studied for a particle under the influence of an explicitly time-dependent rotating potential. We discuss the existence of the propagator and we show that in the limit of rapid rotation it converges strongly to the solution operator of the Schr\"odinger equation with the averaged rotational invariant potential.
arxiv  

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