Results 31 to 40 of about 530 (124)
Controllability and Observability of Nonautonomous Riesz‐Spectral Systems
Abstract and Applied Analysis, Volume 2018, Issue 1, 2018., 2018 There are many industrial and biological reaction diffusion systems which involve the time‐varying features where certain parameters of the system change during the process. A part of the transport‐reaction phenomena is often modelled as an abstract nonautonomous equation generated by a (generalized) Riesz‐spectral operator on a Hilbert space.
Sutrima Sutrima +3 more
wiley +1 more source
Griffith energies as small strain limit of nonlinear models for nonsimple brittle materials
Mathematics in Engineering, 2020 We consider a nonlinear, frame indifferent Griffith model for nonsimple brittle materials where the elastic energy also depends on the second gradient of the deformations. In the framework of free discontinuity and gradient discontinuity problems, we prove existence of minimizers for boundary value problems.
openaire +4 more sources
Rational design of diamond through microstructure engineering: From synthesis to applications
Carbon Energy, Volume 6, Issue 7, July 2024.This review systematically summarizes the structure–property relationship of diamond revealed with the help of transmission electron microscopy‐related techniques. Meanwhile, the graphite‐to‐diamond phase transition that occurred during the growth and fabrication process of the diamond is elucidated.
Yalun Ku +8 more
wiley +1 more source
New Look at Nonlinear Aerodynamics in Analysis of Hypersonic Panel Flutter
Mathematical Problems in Engineering, Volume 2017, Issue 1, 2017., 2017 A simply supported plate fluttering in hypersonic flow is investigated considering both the airflow and structural nonlinearities. Third‐order piston theory is used for nonlinear aerodynamic loading, and von Karman plate theory is used for modeling the nonlinear strain‐displacement relation.
Dan Xie +4 more
wiley +1 more source
Nonlocal Kinetic Energy Functionals By Functional Integration
, 2018 Since the seminal works of Thomas and Fermi, researchers in the Density-Functional Theory (DFT) community are searching for accurate electron density functionals. Arguably, the toughest functional to approximate is the noninteracting Kinetic Energy, $T_s[
Genova, Alessandro +2 more
core +1 more source
Finite‐strain poro‐visco‐elasticity with degenerate mobility
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 104, Issue 5, May 2024.Abstract A quasistatic nonlinear model for poro‐visco‐elastic solids at finite strains is considered in the Lagrangian frame using the concept of second‐order nonsimple materials and Kelvin–Voigt‐type viscosity. The elastic stresses satisfy static frame‐indifference, while the viscous stresses satisfy dynamic frame‐indifference. The mechanical equation
Willem J. M. van Oosterhout +1 more
wiley +1 more source
Geometric Algebra Techniques in Flux Compactifications
Advances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016 We study “constrained generalized Killing (s)pinors,” which characterize supersymmetric flux compactifications of supergravity theories. Using geometric algebra techniques, we give conceptually clear and computationally effective methods for translating supersymmetry conditions into differential and algebraic constraints on collections of differential ...
Calin Iuliu Lazaroiu +3 more
wiley +1 more source
Open PhysicsThis study proposes a comprehensive heat conduction model that incorporates fractional time derivatives and two-phase lags to describe the behavior of non-simple thermoelastic materials accurately.
Zakria Adam +3 more
doaj +1 more source
Interface conditions for a metamaterial with strong spatial dispersion [PDF]
, 2017 Local constitutive relations, i.e. a weak spatial dispersion, are usually considered in the effective description of metamaterials. However, they are often insufficient and effects due to a nonlocality, i.e.
Khrabustovskyi, Andrii +4 more
core +3 more sources
Infinitesimal semi‐invariant pictures and co‐amalgamation
Journal of the London Mathematical Society, Volume 109, Issue 1, January 2024.Abstract The purpose of this paper is to study the local structure of the semi‐invariant picture of a tame hereditary algebra near the null root. Using a construction that we call co‐amalgamation, we show that this local structure is completely described by the semi‐invariant pictures of a collection of self‐injective Nakayama algebras.
Eric J. Hanson +3 more
wiley +1 more source