Results 91 to 100 of about 78,659 (333)

Boolean hypercubes and the structure of vector spaces

open access: yesJournal of Mathematical Sciences and Modelling, 2018
The present study pretends to describe an alternative way to look at Vector Spaces as a scaffold to produce a meaningful new theoretical structure to be used in both classical and quantum QSPR.
Ramon Carbó-dorca
doaj   +1 more source

PLATAN'S POLYHEDRONS

open access: yes, 2020
Introdução: O tema “Poliedros de Platão” foi escolhido para esta pesquisa, afim de trabalhar a Geometria Espacial de uma forma prática, dinâmica, além de facilitar o entendimento dos leitores sobre o assunto. Desmistificando que poliedros é uma temática difícil de ser compreendida, através do grande filósofo e matemático – Platão. Entende-se também que
Ferreira, Vinícius de Almeida   +1 more
openaire   +1 more source

Asymmetric polyhedron structured NiSe2@MoSe2 device for use as a supercapacitor

open access: gold, 2021
M. Sangeetha Vidhya   +4 more
openalex   +2 more sources

Existence and uniqueness theorem for convex polyhedral metrics on compact surfaces [PDF]

open access: yes, 2010
We state that any constant curvature Riemannian metric with conical singularities of constant sign curvature on a compact (orientable) surface $S$ can be realized as a convex polyhedron in a Riemannian or Lorentzian) space-form.
Fillastre, François
core  

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu   +5 more
wiley   +1 more source

Steinitz theorems for simple orthogonal polyhedra

open access: yesJournal of Computational Geometry, 2014
We define a simple orthogonal polyhedron to be a three-dimensional polyhedron with the topology of a sphere in which three mutually-perpendicular edges meet at each vertex.By analogy to Steinitz's theorem characterizing the graphs of convex polyhedra, we
David Eppstein, Elena Mumford
doaj   +1 more source

Stabilization of Single Metal Atoms on Graphitic Carbon Nitride: Synthetic Strategies and Emerging Applications

open access: yesAdvanced Science, EarlyView.
This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang   +6 more
wiley   +1 more source

An approach for line clipping against a convex polyhedron

open access: yesRuhuna Journal of Science, 2016
Line clipping operation is a bottleneck in most of computer graphics applications. There are situations when millions of line segments need to be clipped against convex polyhedrons with millions of facets.
K. R. Wijeweera, S. R. Kodituwakku
doaj   +1 more source

Hierarchically Soft Porous MOF‐Polymer Monolith for Fast and Large‐Scale Moisture Buffering

open access: yesAdvanced Science, EarlyView.
A soft, hierarchical porous monolith that combines metal–organic frameworks (MOFs) with a thermoresponsive polymer matrix enables rapid, large‐scale moisture buffering. The synergistic interface facilitates high‐capacity water capture and low‐energy release for sustainable indoor dehumidification.
Guangxin Ma   +9 more
wiley   +1 more source

Dynamic Covalent Networks of Molecular Clusters for Hard and Impact‐Resistant Glass with Feasible Processability

open access: yesAdvanced Science, EarlyView.
Molecular granular material glass is fabricated by crosslinking sub‐nm POSS clusters with dynamic borate ester bonding while the materials combine high transparency, modulus, and hardness with superior impact resistance and (re)processability, offering a promising strategy for creating robust yet highly processable organic glasses.
Haiyan Xiao   +4 more
wiley   +1 more source

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