Results 51 to 60 of about 30,193 (293)

On elliptic curves with a closed component passing through a hexagon

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
In general, there exists an ellipse passing through the vertices of a convex pentagon, but any ellipse passing through the vertices of a convex hexagon does not have to exist.
Kureš Miroslav
doaj   +1 more source

Duality and Dimensionality Reduction Discrete Line Generation Algorithm for a Triangular Grid

open access: yesISPRS International Journal of Geo-Information, 2018
Vectors are a key type of geospatial data, and their discretization, which involves solving the problem of generating a discrete line, is particularly important. In this study, we propose a method for constructing a discrete line mathematical model for a
Lingyu Du   +4 more
doaj   +1 more source

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

open access: yesAdvanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier   +17 more
wiley   +1 more source

Homogenization of hexagonal lattices [PDF]

open access: yesComptes Rendus. Mathématique, 2010
We characterize the macroscopic effective behavior of a graphene sheet modeled by a hexagonal lattice of elastic bars, using Γ -convergence.
Le Dret, Hervé, Raoult, Annie
openaire   +5 more sources

Ontology‐Aligned Structuring and Reuse of Multimodal Materials Data and Workflows Toward Automatic Reproduction

open access: yesAdvanced Engineering Materials, EarlyView.
Reproduction of stacking fault energy calculations from literature with a semi‐automated large language model‐assisted extraction procedure: extraction of simulation protocol, atomistic structures, computational parameters, and reported results, ontology alignment, knowledge graph construction and, finally, recomputation forvalidation.
Sepideh Baghaee Ravari   +5 more
wiley   +1 more source

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare   +5 more
wiley   +1 more source

Study on Thermal Cloaks for Hexagon and Dodecahedron With Symmetry

open access: yesAerospace Research Communications
The thermal cloak has special thermal insulation performance because of its unique anisotropic thermal conductivity tensor. Constrained by simplistic geometric designs, traditional thermal cloaks face limitations in achieving precise thermal regulation ...
Yanyan Sun   +4 more
doaj   +1 more source

Matchings in hexagonal cacti

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
Explicit recurrences are derived for the matching polynomials of the basic types of hexagonal cacti, the linear cactus and the star cactus and also for an associated graph, called the hexagonal crown.
E. J. Farrell
doaj   +1 more source

Proposition pour un archétype urbain logico-géographique : l’association « logique trichotomique -logique ternaire antagoniste » et son intérêt géographique

open access: yesCybergeo, 2018
Our previous papers showed the interest of using both structural binary logic and, particularly, processual ternary logic to apprehend resilience in urban geography. This paper is an in depth exploration of the association of S.
Henri Reymond, Colette Cauvin
doaj   +1 more source

Pembuktian Cara Cepat Rumus Jarak dalam Bangun Ruang Ditinjau dari Ruang Lingkup Geometri Matematika Sekolah

open access: yesHexagon, 2023
Tulisan ini ditujukan sebagai bentuk penyajian tentang beragam pembuktian pada suatu rumus cepat (rumus jarak) dalam materi bangun ruang dimensi tiga.
Mahfudz Reza Fahlevi
doaj   +1 more source

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