Results 111 to 120 of about 670,635 (308)

On the strong Roman domination number of graphs

Discrete Applied Mathematics, 2017
Based on the history that the Emperor Constantine decreed that any undefended place (with no legions) of the Roman Empire must be protected by a "stronger" neighbor place (having two legions), a graph theoretical model called Roman domination in graphs was described. A Roman dominating function for a graph $G=(V,E)$, is a function $f:V\rightarrow \{0,1,
M.P. Álvarez-Ruiz, T. Mediavilla-Gradolph, S.M. Sheikholeslami, J.C. Valenzuela-Tripodoro, I.G. Yero   +4 more
openaire   +4 more sources

A Multisensor Remote Sensing Approach to Archaeological Prospection: Integrating UAV and Google Earth Data in the Bayan Gol Valley, Mongolia

Archaeological Prospection, EarlyView.
ABSTRACT This study investigates the effectiveness of drone‐based remote sensing and Google Earth satellite imagery for archaeological prospection in the Bayan Gol Valley, Central Mongolia. Utilizing a fixed‐wing unmanned aerial vehicle (UAV) equipped with RGB and multispectral sensors, we surveyed 655 ha to document Mongol‐period settlement structures
Peter Heimermann, Matthias Lang, Susanne Reichert, Lkhagvadorj Munkhbayar, Jan Bemmann   +4 more
wiley   +1 more source

Linking Skin and Joint Inflammation in Psoriatic Arthritis through Shared CD8+ T Cell Clones

Arthritis &Rheumatology, EarlyView.
Objective Psoriatic arthritis (PsA) is an HLA class I–associated inflammatory arthritis that develops in up to 30% of people with psoriasis. We tested the hypothesis that skin and joint inflammation in PsA is linked in terms of CD8+ T cell phenotype and clonality.
Lucy E. Durham, Frances Humby, Nora Ng, Roman Laddach, Elizabeth H. Gray, Sarah E. Ryan, Kathryn J. A. Steel, Rosie Ross, Giovanni A. M. Povoleri, Rosamond Nuamah, Kathy Fung, Athul Menon Kallayil, Pawan Dhami, Bruce W. Kirkham, Leonie S. Taams   +14 more
wiley   +1 more source

Strong equality of Roman and weak Roman domination in trees

Discrete Applied Mathematics, 2016
We provide a constructive characterization of the trees for which the Roman domination number strongly equals the weak Roman domination number, that is, for which every weak Roman dominating function of minimum weight is a Roman dominating function.
Simone Dantas, José D. Alvarado, Dieter Rautenbach   +2 more
openaire   +3 more sources

The history of anatomical engagement

Anatomical Sciences Education, EarlyView.
Abstract The public's fascination with anatomy has evolved over time and progressed from avoidance of the tainted yet saintly corpse, to their fascination with cabinets of curiosities. The current narrative review explores public engagement (PE), from its potential origins as cave paintings, to the rise of the disciplinarity of anatomy.
Quenton Wessels, Adam M. Taylor
wiley   +1 more source

On the Roman domination in the lexicographic product of graphs

Discrete Applied Mathematics, 2012
AbstractA Roman dominating function of a graph G=(V,E) is a function f:V→{0,1,2} such that every vertex with f(v)=0 is adjacent to some vertex with f(v)=2. The Roman domination number of G is the minimum of w(f)=∑v∈Vf(v) over all such functions. Using a new concept of the so-called dominating couple we establish the Roman domination number of the ...
Kraner Šumenjak, Tadeja, Repolusk, Polona, Tepeh, Aleksandra   +2 more
openaire   +4 more sources

Parents information behavior: Typology of vaccine attitudes in the context of information source use

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Although some studies indicate that vaccine risks are not a major public concern, vaccine hesitancy is nevertheless increasing. The “cure” is not simply higher information‐literacy levels; many investigations emphasize that information must come from sources people trust.
Anna Mierzecka, Marcin Łączyński
wiley   +1 more source

JWST Imaging of the Closest Globular Clusters—VI. The Lowest‐Mass Objects in M 4 and the Galactic Bulge

Astronomische Nachrichten, EarlyView.
ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin, R. Gerasimov, A. Calamida, M. Libralato, M. Scalco, D. Nardiello, M. Griggio, D. Apai, J. Anderson, A. Bellini, A. Burgasser   +10 more
wiley   +1 more source

A note on the edge Roman domination in trees

Electronic Journal of Graph Theory and Applications, 2017
A subset $X$ of edges of a graph $G$ is called an \textit{edgedominating set} of $G$ if every edge not in $X$ is adjacent tosome edge in $X$. The edge domination number $\gamma'(G)$ of $G$ is the minimum cardinality taken over all edge dominating sets of 
Nader Jafari Rad
doaj   +1 more source

Signed double Roman domination in graphs

Discrete Applied Mathematics, 2019
In this paper we continue the study of signed double Roman dominating functions in graphs. A signed double Roman dominating function (SDRDF) on a graph G = (V,E) is a function f : V(G)  {-1,1,2,3} having the property that for each v  V(G), f [v] ≥ 1, and if f (v)= -1, then vertex v has at least two neighbors assigned 2 under f or one ...
Hossein Abdollahzadeh Ahangar, Mustapha Chellali, Seyed Mahmoud Sheikholeslami   +2 more
openaire   +3 more sources