Results 61 to 70 of about 35,950 (265)

Comparative energy analysis of spherical fuzzy indices in decision-making problems

open access: yesInternational Journal of Mathematics for Industry
Molecular descriptors, such as topological indices (TIs), play a crucial role in network theory, spectral graph theory, and molecular chemistry. Spherical fuzzy graphs (SFGs), an extension of picture fuzzy graphs (PFGs), utilize topological indices from ...
Biswajit Some, Anita Pal
doaj   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai   +2 more
wiley   +1 more source

Geometric preferential attachment with choice-based edge step

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов
We study the asymptotic behavior of the maximum degree in the geometric graph model with a preferential attachment choice-based edge step. Geometric graphs are natural models that describe some nanoscale systems, while preferential attachment provides a ...
Yu.A. Malyshkin
doaj   +1 more source

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh   +6 more
wiley   +1 more source

Optimization of Spectral Wavelets for Persistence-Based Graph Classification

open access: yesFrontiers in Applied Mathematics and Statistics, 2021
A graph's spectral wavelet signature determines a filtration, and consequently an associated set of extended persistence diagrams. We propose a framework that optimizes the choice of wavelet for a dataset of graphs, such that their associated persistence
Ka Man Yim, Jacob Leygonie
doaj   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente   +3 more
wiley   +1 more source

Note on Geometric Graphs

open access: yesJournal of Combinatorial Theory, Series A, 2000
The vertices of a geometric graph are points in the plane in a general position and the edges are (possibly crossing) line segments connecting the vertices. The article addresses the problem of determining the smallest number \( e_k(n) \) such that any geometric graph with \( n \) vertices and \( m > e_k(n) \) edges contains \( k+1 \) pairwise disjoint
openaire   +1 more source

On Geometric Graph Ramsey Numbers [PDF]

open access: yesGraphs and Combinatorics, 2009
For graphs \(G_1, G_2, \dots, G_r\) the Ramsey number \(R(G_1, G_2, \dots, G_r)\) is the smallest positive integer \(n\) such that if the edges of a complete graph \(K_n\) are partitioned into \(r\) disjoint colour classes giving \(r\) graphs \(H_1, H_2, \dots, H_r\), then at least one \(H_i\), \(1\leq i\leq r\), contains a subgraph isomorphic to \(G_i\
Karolyi, Gyula, Rosta, Vera
openaire   +3 more sources

A Graph Representation Composed of Geometrical Components for Household Furniture Detection by Autonomous Mobile Robots

open access: yesApplied Sciences, 2018
This study proposes a framework to detect and recognize household furniture using autonomous mobile robots. The proposed methodology is based on the analysis and integration of geometric features extracted over 3D point clouds.
Oscar Alonso-Ramirez   +5 more
doaj   +1 more source

Engineered Mycelial Scaffolds With Tunable Ultraviolet Protection, Wettability, Thermal Stability, and Spatial Mechanics

open access: yesAdvanced Engineering Materials, EarlyView.
Fungal mycelia grown into biodegradable scaffolds and infused with titania nanoparticles show enhanced ultraviolet shielding, thermal protection, and surface nonwettability. Properties were tuned by drying methods, revealing structure–function relationships.
Juwon S. Afolayan   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy