Characterization of mechanical damage and viscoelasticity on aortas from guinea pigs subjected to hypoxia. [PDF]
Sci RepBezmalinovic A +5 more
europepmc +1 more source
Local Whittle estimation in time‐varying long memory series
Journal of Time Series Analysis, Volume 46, Issue 4, Page 647-673, July 2025.The memory parameter is usually assumed to be constant in traditional long memory time series. We relax this restriction by considering the memory a time‐varying function that depends on a finite number of parameters. A time‐varying Local Whittle estimator of these parameters, and hence of the memory function, is proposed.
Josu Arteche, Luis F. Martins
wiley +1 more source
Mixed orthogonality graphs for continuous‐time state space models and orthogonal projections
Journal of Time Series Analysis, Volume 46, Issue 4, Page 692-726, July 2025.In this article, we derive (local) orthogonality graphs for the popular continuous‐time state space models, including in particular multivariate continuous‐time ARMA (MCARMA) processes. In these (local) orthogonality graphs, vertices represent the components of the process, directed edges between the vertices indicate causal influences and undirected ...
Vicky Fasen‐Hartmann, Lea Schenk
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Stability analysis of the incompressible porous media equation and the Stokes transport system via energy structure. [PDF]
Calc Var Partial Differ EquPark J.
europepmc +1 more source
Systematic Entomology, Volume 50, Issue 3, Page 469-494, July 2025.A comprehensive, integrative study approach combining morphology, population genetics, phylogenetics and biogeography revealed that the Acromyrmex octospinosus species complex consists of two species: A. octospinosus and its social parasite A. insinuator.
Daniela Mera‐Rodríguez +2 more
wiley +1 more source
Mathematical modelling of membrane oscillatory processes in a nonlinear viscoelastic medium via the Caputo-Fabrizio fractional operator. [PDF]
Sci RepChaban A +5 more
europepmc +1 more source
A simple construction of the sine‐Gordon model via stochastic quantization
Journal of the London Mathematical Society, Volume 112, Issue 1, July 2025.Abstract We present a simple PDE construction of the sine‐Gordon measure below the first threshold (β2<4π$\beta ^2 < 4\pi$), in both the finite and infinite volume settings, by studying the corresponding parabolic sine‐Gordon model. We also establish pathwise global well‐posedness of the hyperbolic sine‐Gordon model in finite volume for β2<2π$\beta ^2 <
Massimiliano Gubinelli +3 more
wiley +1 more source
Phase‐Field Modeling of Ductile Fracture Across Grain Boundaries in Polycrystals
International Journal for Numerical Methods in Engineering, Volume 126, Issue 12, 30 June 2025.ABSTRACT In this study, we address damage initiation and microcrack formation in ductile failure of polycrystalline metals. We show how our recently published thermodynamic framework for ductile phase‐field fracture of single crystals can be extended to polycrystalline structures.
Kim Louisa Auth +2 more
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A Time‐Adaptive Multirate Quasi‐Newton Waveform Iteration for Coupled Problems
International Journal for Numerical Methods in Engineering, Volume 126, Issue 12, 30 June 2025.ABSTRACT We consider waveform iterations for dynamical coupled problems, or more specifically, PDEs that interact through a lower‐dimensional interface. We want to allow for the reuse of existing codes for the subproblems, called a partitioned approach.
Niklas Kotarsky, Philipp Birken
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