Results 211 to 220 of about 25,954 (258)

Co‐phylogeny and biogeography of the myrmecophilous beetle Paussus favieri (Carabidae, Paussinae) and its host ant Pheidole pallidula (Hymenoptera, Myrmicinae)

Insect Science, EarlyView.
Strict patterns of co‐divergence have rarely been documented other than among organisms and their symbionts. In this paper, using a molecular approach, we inferr the population‐level phylogenies of a Mediterranean ant species Pheidole pallidula and its nest parasite, the obligate myrmecophilous beetle Paussus favieri. We then investigate the role of co‐
Davide Bergamaschi, Wendy Moore, Andrea Di Giulio   +2 more
wiley   +1 more source

The Dogs of Tsenacomoco: Ancient DNA Reveals the Presence of Local Dogs at Jamestown Colony in the Early Seventeenth Century. [PDF]

Am Antiq
Thomas AE, Hill ME, Stricker L, Lavin M, Givens D, de Flamingh A, Witt KE, Malhi RS, Kitchen A.   +8 more
europepmc   +1 more source

Weaker the gang, harder the exit

Criminology, EarlyView.
Abstract This study draws on 95 interviews and observations with gang‐affiliated individuals in Chicago to examine how gang structures shape disengagement and desistance from crime. During the last two decades, the city's gangs have experienced a decline in group closure, or their capacity to regulate membership and member behavior, and a blurring of ...
Megan Kang
wiley   +1 more source

The river Dniester valley: a long record of late-Cenozoic fluvial evolution within the Eastern Carpathian foreland and East European Platform margin. [PDF]

R Soc Open Sci
Matoshko AV, Gibbard P.
europepmc   +1 more source

Improvement in the English Translations of Albrecht von Haller's Usong (1771)

Journal for Eighteenth-Century Studies, EarlyView.
Abstract The political novel Usong (1771), written by the Swiss physiologist Albrecht von Haller (1708–1777), is set in the fifteenth century and tells the story of a Mongolian prince who becomes the Emperor of Persia and redesigns the government of his empire to promote the happiness of his subjects.
Laura Tarkka
wiley   +1 more source

Snake words in Estonia: Language, nature and extinction in Andrus Kivirähk's <i>The Man Who Spoke Snakish</i>. [PDF]

Camb Prism Extinct
Howard A, Nelson D.
europepmc   +1 more source

Global total Roman domination in graphs

Discrete Mathematics, Algorithms and Applications, 2017
A total Roman dominating function (TRDF) on a graph [Formula: see text] is a function [Formula: see text] satisfying the conditions (i) every vertex [Formula: see text] for which [Formula: see text] is adjacent at least one vertex [Formula: see text] for which [Formula: see text] and (ii) the subgraph of [Formula: see text] induced by the set of all ...
J. Amjadi, S. Nazari-Moghaddam, Seyed Mahmoud Sheikholeslami   +2 more
semanticscholar   +3 more sources

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On Total Roman Domination in Graphs

International Conference on Theoretical Computer Science and Discrete Mathematics, 2016
A Roman dominating function (RDF) on a graph \(G = (V,E)\) is a function \( f:V \rightarrow \lbrace 0,1,2\rbrace \) satisfying the condition that every vertex u for which \(f(u) = 0\) is adjacent to at least one vertex v for which \(f(v)=2\). A total Roman dominating function on a graph \(G = (V,E)\) is a Roman dominating function \(f : V \rightarrow ...
P. R. L. Pushpam, Padmapriea Sampath
semanticscholar   +3 more sources

Nordhaus–Gaddum bounds for total Roman domination [PDF]

Journal of Combinatorial Optimization, 2018
A Nordhaus–Gaddum-type result is a lower or an upper bound on the sum or the product of a parameter of a graph and its complement. In this paper we continue the study of Nordhaus–Gaddum bounds for the total Roman domination number $$\gamma _{tR}$$
J. Amjadi, S. Sheikholeslami, M. Soroudi
semanticscholar   +3 more sources