Results 71 to 80 of about 128,027 (302)

Signed double Roman domination in graphs

Discrete Applied Mathematics, 2019
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Hossein Abdollahzadeh Ahangar, Mustapha Chellali, Seyed Mahmoud Sheikholeslami   +2 more
openaire   +3 more sources

Increased Blood Flow and Tendon Swelling Precedes Vascular Expansion and Tissue Matrix Changes In Early Human Tendinopathy: A Potential Window for Superior Treatment Response

Advanced Science, EarlyView.
Human participants with early‐ or chronic‐stage tendinopathy and healthy controls are investigated using ultrasound Doppler, 3T and 7T MRI, and tendon biopsies. Tendon swelling and hyperperfusion are evident early, while vascular growth and extracellular matrix changes are most pronounced in chronic tendinopathy. Early intervention may provide superior
Max F. R. Merkel, Nikolaj M. Malmgaard‐Clausen, Marius Lendal, Hartwig R. Siebner, René B. Svensson, Stephanie G. Dakin, Marcus Krüger, Luisa Schmidt, Jakob Agergaard, Ching‐Yan Chloé Yeung, S. Peter Magnusson, Michael Kjaer   +11 more
wiley   +1 more source

The Distance Roman Domination Numbers of Graphs

Discussiones Mathematicae Graph Theory, 2013
Let k be a positive integer, and let G be a simple graph with vertex set V (G). A k-distance Roman dominating function on G is a labeling f : V (G) → {0, 1, 2} such that for every vertex with label 0, there is a vertex with label 2 at distance at most k ...
Aram Hamideh, Norouzian Sepideh, Sheikholeslami Seyed Mahmoud   +2 more
doaj   +1 more source

The Platform to Characterizing the Thermoelectric Materials by Photo‐Crosslinked Ionic Gel Electrolyte

Advanced Electronic Materials, EarlyView.
The device platform, which utilizes a photo‐crosslinked ionic gel electrolyte with a broad range of oxidation and reduction capabilities, can effectively evaluate and screen the thermoelectric material candidates with high potential across a wide range of doping levels, thereby minimizing the effort required to identify dopants compatible with ...
Sunbin Hwang, Mutsunori Uenuma, Junya Kurumida   +2 more
wiley   +1 more source

Roman domination excellent graphs: trees

Communications in Combinatorics and Optimization, 2016
A Roman dominating function (RDF) on a graph $G = (V, E)$ is a labeling $f : V \rightarrow \{0, 1, 2\}$ such that every vertex with label $0$ has a neighbor with label $2$. The weight of $f$ is the value $f(V) = _{v\in V} f(v)$. The Roman domination number, $ _R(G)$, of $G$ is the minimum weight of an RDF on $G$. An RDF of minimum weight is called a
openaire   +3 more sources

Mitigating Structural Degradation in O3‐Layered Sodium‐Ion Cathodes: Insights from Mg Doping in NaNi0.2Fe0.4Mn0.4O2

Advanced Energy Materials, EarlyView.
Selective Mg doping in O3‐layered NaNi0.2Fe0.4Mn0.4O2 unlocks fast Na⁺ transport, stable anionic redox, and structural resilience. At 5% substitution, the cathode delivers improved capacity retention and high‐rate performance, while suppressing oxygen loss.
Akanksha Joshi, Amreen Bano, Sandipan Maiti, Arun Krishnan, Aleksandr Kondrakov, Shubham Patel, Roman R. Kapaev, Tatiana K. Zakharchenko, Nicole Leifer, Dan Thomas Major, Doron Aurbach, Malachi Noked   +11 more
wiley   +1 more source

Climate Change Agricultural Comparative Advantage and the US Trade Balance

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT Current science indicates that warming and elevated atmospheric CO2 will have ambiguous results for crop productivity depending on crop type and geographic location, whereas increased heat stress makes livestock and human labor less productive.
Elizabeth A. Fraysse, Thomas W. Hertel, Roman Keeney   +2 more
wiley   +1 more source

Weak signed Roman k-domination in digraphs [PDF]

Opuscula Mathematica
Let \(k\geq 1\) be an integer, and let \(D\) be a finite and simple digraph with vertex set \(V(D)\). A weak signed Roman \(k\)-dominating function (WSRkDF) on a digraph \(D\) is a function \(f \colon V(D)\rightarrow \{-1,1,2\}\) satisfying the condition
Lutz Volkmann
doaj   +1 more source

Dominating the Direct Product of Two Graphs through Total Roman Strategies

Mathematics, 2020
Given a graph G without isolated vertices, a total Roman dominating function for G is a function f:V(G)→{0,1,2} such that every vertex u with f(u)=0 is adjacent to a vertex v with f(v)=2, and the set of vertices with positive labels induces a graph of ...
Abel Cabrera Martínez, Dorota Kuziak, Iztok Peterin, Ismael G. Yero   +3 more
doaj   +1 more source

Quasi-total Roman Domination in Graphs [PDF]

Results in Mathematics, 2019
15 ...
Suitberto Cabrera García, Abel Cabrera Martínez, Ismael G. Yero   +2 more
openaire   +6 more sources