Results 51 to 60 of about 2,171 (226)

A creative geometric investigation in Middle School: the case of quadrilaterals

open access: yesEducação Matemática Debate
The research aimed to analyze the mathematical creativity of students in Middle School in the production of different quadrilaterals in 3×3 grids, considering the fluency, flexibility and originality of the answers.
Cristian Martins da Silva   +2 more
doaj   +1 more source

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

open access: yesAdvanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut   +16 more
wiley   +1 more source

Compound Biorthogonal Wavelets on Quadrilaterals and Polar Structures

open access: yesAlgorithms, 2009
In geometric models with high-valence vertices, current subdivision wavelets may not deal with the special cases well for good visual effect of multiresolution surfaces.
Chong Zhao   +3 more
doaj   +1 more source

GHOST: Geoscientific Hollow Sphere Tessellation [PDF]

open access: yesSolid Earth, 2018
I present in this work the GHOST (Geoscientific Hollow Sphere Tessellation) software which allows for the fast generation of computational meshes in hollow sphere geometries counting up to 100 million cells.
C. Thieulot
doaj   +1 more source

Quadrilaterals

open access: yes, 2020
Quadrilaterals is a topic which need not be ‘taught’ by a teacher. As a topic it presents ample opportunities for holding discussion based classes. Geometry topics in general need to be approached as explorations. Quadrilaterals is a topic where students
Shirali, Padmapriya
core  

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

open access: yesAdvanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Butterfly theorem and porism on cyclic quadrilaterals [PDF]

open access: yes, 2018
We give a short overview of the geometry of quadrilaterals including complex quadrilaterals with special emphasis on cyclic quadrilaterals and butterfly theorems. The main aim is to study the proof by Ivan Izmestiev of a porism for cyclic quadrilaterals
Tomažič, Marina
core  

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

open access: yesAdvanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite   +5 more
wiley   +1 more source

Playing with Quadrilaterals

open access: yes, 2020
In school, we are introduced to quadrilaterals as four-sided figures enclosing a region and usually, while discussing their properties, we work only with quadrilaterals each of whose interior angles is less than 180 ◦ .
De, Prithwijit
core  

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

open access: yesAdvanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa   +3 more
wiley   +1 more source

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