Results 31 to 40 of about 1,312 (121)

Tracing the origin of Roman mosaic tiles in Aquileia: Petrographic analysis of specimens from the suburbium

open access: yesArchaeometry, Volume 67, Issue 5, Page 1247-1266, October 2025.
Abstract This research represents the most extensive characterisation of Roman mosaic tesserae (tiles) from Aquileia, Italy, to date, examining 153 specimens. The study aimed to identify the lithotypes used in mosaics production through a multi‐analytical approach, which included colorimetric analysis, polarised light microscopy and scanning electron ...
Neva M. E. Stucchi   +5 more
wiley   +1 more source

(3+1)-dimensional topological phases and self-dual quantum geometries encoded on Heegard surfaces

open access: yes, 2017
We apply the recently suggested strategy to lift state spaces and operators for (2+1)-dimensional topological quantum field theories to state spaces and operators for a (3+1)-dimensional TQFT with defects.
Dittrich, Bianca
core   +1 more source

Numerical study for the c-dependence of fractal dimension in two-dimensional quantum gravity [PDF]

open access: yes, 2002
We numerically investigate the fractal structure of two-dimensional quantum gravity coupled to matter central charge c for $-2 \leq c \leq 1$. We reformulate Q-state Potts model into the model which can be identified as a weighted percolation cluster ...
Agishtein   +62 more
core   +2 more sources

Constitutive immune function variation across the non‐breeding season in an extreme long‐distance migrant

open access: yesJournal of Avian Biology, Volume 2025, Issue 5, September 2025.
Migratory animals often display remarkable adaptations in order to successfully complete their journeys. While there is substantial evidence on immunomodulation during breeding and at stopover sites en route, the immune status of migratory birds upon reaching their non‐breeding grounds and throughout this stationary season remains poorly understood ...
José O. Valdebenito   +11 more
wiley   +1 more source

Chromatic roots are dense in the whole complex plane [PDF]

open access: yes, 2004
I show that the zeros of the chromatic polynomials P-G(q) for the generalized theta graphs Theta((s.p)) are taken together, dense in the whole complex plane with the possible exception of the disc \q - l\ < l.
Sokal, AD
core  

On uniqueness of the q-state Potts model on a self-dual family of graphs [PDF]

open access: yes, 2009
This paper deals with the location of the complex zeros of the Tutte polynomial for a class of self-dual graphs. For this class of graphs, as the form of the eigenvalues is known, the regions of the complex plane can be focused on the sets where there is
Billiot, Jean-Michel   +2 more
core   +4 more sources

Is Paw Preference in Rats Influenced by Environmental Novelty?

open access: yesEthology, Volume 131, Issue 9, Page 77-93, September 2025.
This study aimed to investigate the effect of environmental novelty during adolescence and adulthood on the paw preference in rats. Therefore, rats experienced a regular enrichment change and were repeatedly tested for their paw preference. We found that a regular enrichment change did not alter their behavioural lateralisation.
Elena Groneberg   +2 more
wiley   +1 more source

Infants as Social Magnets: The Influence of Births on Social Interactions in Redfronted Lemurs (Eulemur rufifrons)

open access: yesAmerican Journal of Primatology, Volume 87, Issue 8, August 2025.
ABSTRACT Infant survival is an important component of parental fitness in iteroparous species with slow life histories. From the infant's perspective, survival can be more or less directly influenced by the social environment, with group members potentially representing either a threat or a buffer against external stressors.
Amrei Pfaff   +2 more
wiley   +1 more source

Kauffman Knot Invariant from SO(N) or Sp(N) Chern-Simons theory and the Potts Model

open access: yes, 2010
The expectation value of Wilson loop operators in three-dimensional SO(N) Chern-Simons gauge theory gives a known knot invariant: the Kauffman polynomial. Here this result is derived, at the first order, via a simple variational method.
L. H. Kauffman   +4 more
core   +1 more source

Global patterns of colouration complexity in the Paridae: Effects of climate and species characteristics across body regions

open access: yesJournal of Animal Ecology, Volume 94, Issue 7, Page 1461-1473, July 2025.
Variation in colour complexity in the Paridae is linked to climate, climate variability and several biotic factors. The strength of the associations is patch specific. Variables related to resource competition are more strongly associated with colour complexity of the head and breast than with that of the back and wing.
David López‐Idiáquez   +2 more
wiley   +1 more source

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