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Results 81 to 90 of about 42,350 (268)

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park +5 more
wiley +1 more source

On 14-regular distance magic graphs

Electronic Journal of Graph Theory and Applications
Let G be a graph with n vertices. By N(v) we denote the set of all vertices adjacent to v. A bijection f : V(G)→{1, 2, …, n} is a distance magic labeling of G if there exists an integer k such that the sum of labels of all vertices adjacent to v is k for
Petr Kovář, Matěj Krbeček
doaj +1 more source

Retracing Argument for Distance-Regular Graphs

Journal of Combinatorial Theory, Series B, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +1 more source

Cumulative Social Disadvantage and Disease Activity in Juvenile Idiopathic Arthritis: A Childhood Arthritis and Rheumatology Research Alliance Registry Study

Arthritis Care &Research, EarlyView.
Objective Social determinants of health (SDOH) contribute to juvenile idiopathic arthritis (JIA) disparities, but most studies have assessed SDOH independently rather than cumulatively across individual, family, and neighborhood levels. Using a socioecological framework, we investigated the relationship among cumulative social disadvantage ...
William Daniel Soulsby +448 more
wiley +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source

What Do Large Language Models Know About Materials?

Advanced Engineering Materials, EarlyView.
If large language models (LLMs) are to be used inside the material discovery and engineering process, they must be benchmarked for the accurateness of intrinsic material knowledge. The current work introduces 1) a reasoning process through the processing–structure–property–performance chain and 2) a tool for benchmarking knowledge of LLMs concerning ...
Adrian Ehrenhofer +2 more
wiley +1 more source

On the spectra of reduced distance matrix of dendrimers [PDF]

Transactions on Combinatorics, 2013
Let G be a simple connected graph and {v_1,v_2,... , v_k} be the set of pendent (vertices of degree one) vertices of G. The reduced distance matrix of G is an square matrix whose (i,j)-entry is the topological distance between v_i and v_j of G.
Abbas Heydari
doaj

Gutman Index and Detour Gutman Index of Pseudo-Regular Graphs

Journal of Applied Mathematics, 2017
The Gutman index of a connected graph G is defined as Gut(G)=∑u≠vd(u)d(v)d(u,v), where d(u) and d(v) are the degree of the vertices u and v and d(u,v) is the distance between vertices u and v.
S. Kavithaa, V. Kaladevi
doaj +1 more source

Three New Distance-regular Graphs

European Journal of Combinatorics, 1993
We describe three new diameter 4 distance-regular triple covers of strongly regular graphs. The first two such covers are distance- transitive, with intersection arrays \{416,315,64,1;1,32,315,416\} and \{56,45,16,1;1,8,45,56\}. The third has intersection array \{32,27,8,1;1,4,27,32\}, but is not distance-transitive.
openaire +3 more sources

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich +3 more
wiley +1 more source

association schemes, strongly regular graphs
theoretical computer science
computational theory and mathematics

distance in graphs
discrete mathematics and combinatorics
distance-regular graphs

diameter
mathematics - combinatorics
geometry and topology