Results 81 to 90 of about 57,903 (315)

Geometry, Topology and Simplicial Synchronization

open access: yes, 2022
32 pages, 10 ...
Millan, AP   +3 more
openaire   +6 more sources

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran   +6 more
wiley   +1 more source

Geometry of skeletal structures and symmetry sets [PDF]

open access: yes, 2012
In this thesis we study the geometry of symmetry sets and skeletal structures. The relationship between a symmetry point (skeletal point) and the associated midlocus point is studied and the impact of the singularity of the radius function on this ...
Alghanemi, Azeb Zain Jafar
core  

Covering link calculus and iterated Bing doubles

open access: yes, 2018
We give a new geometric obstruction to the iterated Bing double of a knot being a slice link: for n > 1 the (n+1)-st iterated Bing double of a knot is rationally slice if and only if the n-th iterated Bing double of the knot is rationally slice. The main
Kim, T, Cha, JC
core   +1 more source

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle   +3 more
wiley   +1 more source

Asymptotic homology of graph braid groups

open access: yes, 2021
We give explicit formulas for the asymptotic Betti numbers of the unordered configuration spaces of an arbitrary finite graph over an arbitrary field.Comment: 19 pages, 6 figures.
Knudsen, Ben   +3 more
core   +1 more source

Geometry and Topology of String Junctions [PDF]

open access: yesJournal of Singularities, 2016
We study elliptic fibrations by analyzing suitable deformations of the fibrations and vanishing cycles. We introduce geometric string junctions and describe some of their properties. We show how the structure of the geometric string junctions is naturally related to the Lie algebra structures of the associated singularities.
Grassi, Antonella   +2 more
openaire   +3 more sources

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

open access: yesAdvanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari   +3 more
wiley   +1 more source

Asymmetric L-space knots

open access: yes, 2020
We construct the first examples of asymmetric L-space knots in S-3. More specifically, we exhibit a construction of hyperbolic knots in S-3 with both (i) a surgery that may be realized as a surgery on a strongly invertible link such that the result of ...
Baker, Kenneth L., Luecke, John
core   +1 more source

What if the Universe Expands Linearly? A Local General Relativity to Solve the “Zero Active Mass” Problem

open access: yesThe Astrophysical Journal
Modern cosmology presents important challenges such as the Hubble Tension, El Gordo’s collision, or the impossible galaxies ( z > 10). Slight modifications to the standard model propose new parameters (e.g., the early and dynamical dark energy).
Robert Monjo
doaj   +1 more source

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