A variational approach to the Yau-Tian-Donaldson conjecture
, 2020 We give a variational proof of a version of the Yau-Tian-Donaldson conjecture for twisted K\"ahler-Einstein currents, and use this to express the greatest (twisted) Ricci lower bound in terms of a purely algebro-geometric stability threshold.
Berman, Robert +2 more
core +3 more sources
Remarks on Input-to-State Stability and Non-Coercive Lyapunov Functions [PDF]
2018 IEEE Conference on Decision and Control (CDC), 2018 We consider an abstract class of infinite-dimensional dynamical systems with inputs. For this class the significance of noncoercive Lyapunov functions is analyzed. It is shown that the existence of such Lyapunov functions implies integral input-to-integral state stability. Assuming further regularity it is possible to conclude input-to-state stability.
Jacob, B +3 more
openaire +2 more sources
Coercive polynomials: stability, order of growth, and Newton polytopes
Optimization, 2018 AbstractIn this article we introduce a stability concept for the coercivity of multivariate polynomials . In particular, we consider perturbations of f by polynomials up to the so-called degree of stable coercivity, and we analyze this stability concept in terms of the corresponding Newton polytopes at infinity.
Bajbar, Tomáš, Stein, Oliver
openaire +2 more sources
Crystal growth and property characterization for PIN–PMN–PT ternary piezoelectric crystals [PDF]
Journal of Advanced Dielectrics, 2014 Binary piezoelectric crystal Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN–PT) has excellent dielectric and piezoelectric properties, which has led to the commercialization for medical ultrasound imaging.
Jian Tian, Pengdi Han
doaj +1 more source
Structural stability of bang-bang trajectories with a double switching time in the minimum time problem [PDF]
, 2016 In this paper we consider the problem of structural stability of strong local optimisers for the minimum time problem in the case when the nominal problem has a bang-bang strongly local optimal control which exhibits a double ...
Poggiolini, Laura
core +3 more sources
Microstructure and magnetism of Ga+-irradiated IrMn-based spin-valve multilayered film
AIP Advances, 2020 An IrMn top-nailed spin-valve multilayer film was synthesized using direct-current magnetron sputtering on a naturally oxidized silicon substrate. The multilayered film microstructure and magnetism were analyzed using x-ray diffraction, transmission, and
Xianjin Qi +4 more
doaj +1 more source
Ferroelectric Orthorhombic ZrO2 Thin Films Achieved Through Nanosecond Laser Annealing
Advanced Science, 2023 A new approach for the stabilization of the ferroelectric orthorhombic ZrO2 films is demonstrated through nanosecond laser annealing (NLA) of as‐deposited Si/SiOx/W(14 nm)/ZrO2(8 nm)/W(22 nm), grown by ion beam sputtering at low temperatures.
Anna P. S. Crema +12 more
doaj +1 more source
Effect of sintering temperature on magnetoelectric coupling in 0.2Ni0.9Zn0.1Fe2O4-0.8Ba0.9Sr0.1TiO3 composite ceramics [PDF]
Processing and Application of Ceramics, 2020 Magnetoelectric composites have attracted much attention due to their intriguing physical properties and potential applications. They might have strong magnetoelectric coupling effect above room temperature, but it mainly depends on the sintering ...
Yu Juan, Bai Lang, Gao Rongli
doaj +1 more source
On cell problems for Hamilton-Jacobi equations with non-coercive Hamiltonians and its application to homogenization problems [PDF]
, 2015 We study a cell problem arising in homogenization for a Hamilton-Jacobi equation whose Hamiltonian is not coercive. We introduce a generalized notion of effective Hamiltonians by approximating the equation and characterize the solvability of the cell ...
Hamamuki, Nao +2 more
core +2 more sources
Synthesis and characterization of core-shell structure silica-coated Fe29.5Ni70.5 nanoparticles [PDF]
, 2007 In view of potential applications of magnetic particles in biomedicine and electromagnetic devices, we made use of the classical Stober method base-catalysed hydrolysis and condensation of tetraethoxysilane (TEOS) to encapsulate FeNi nanoparticles within
A Brosseau +28 more
core +2 more sources