Results 71 to 80 of about 138,198 (291)

On Geodesic Completeness for Riemannian Metrics on Smooth Probability Densities

, 2017
The geometric approach to optimal transport and information theory has triggered the interpretation of probability densities as an infinite-dimensional Riemannian manifold.
Bauer, Martin, Joshi, Sarang, Modin, Klas   +2 more
core   +1 more source

Ultralow‐Frequency Epsilon‐Near‐Zero States in 3D‐Printed High‐Entropy Alloy Metacomposites for Ultra‐Thin Perfect RF Absorption

Advanced Materials, EarlyView.
Rozanov causality limit—a compulsive proportional thickness‐wavelength relationship (nd ∝ λ)—makes it challenging to develop perfect absorption with both thin thickness and low frequency. Herein, a cocktail effect in high‐entropy alloys (HEA) is crucially utilized for lowering plasma frequency to achieve epsilon‐near‐zero states, which finally enables ...
Peitao Xie, Haikun Wu, Zhenxiang Cheng, Mingxiang Liu, Yuan Liu, Weikong Pang, Runhua Fan, Yao Liu   +7 more
wiley   +1 more source

On the formulation and investigation of a boundary value problem for a third-order equation of a parabolic-hyperbolic type

Қарағанды университетінің хабаршысы. Математика сериясы
In the paper a novel boundary value problem for a third-order partial differential equation (PDE) of a parabolic-hyperbolic type, within a pentagonal domain consisting of both parabolic and hyperbolic regions was investigated. Such equations are pivotal
М. Мамажанов, К. Рахимов, Х. Шерматова   +2 more
doaj   +1 more source

Operando X‐ray Spectroscopy Study of Pd and Pd–Au Laterally Condensed Catalysts during Selective Acetylene Hydrogenation: The Role of Carbon

Advanced Materials, EarlyView.
The selective hydrogenation of acetylene over laterally condensed Pd and Pd–Au catalysts (LCCs) was investigated using operando X‐ray absorption and photoelectron spectroscopy in combination with density functional theory. Pd‐LCCs were found to incorporate significantly more carbon into the metal lattice than Pd–Au LCCs, where the carbon uptake governs
Eylül Öztuna, Thomas Götsch, Daniel Cruz, Patrick Zeller, Olga V. Vinogradova, Zehua Li, Christian Rohner, Franz‐Philipp Schmidt, Zahra Gheisari, Alexander Steigert, Martin Muske, Michael Hävecker, Eugen Stotz, Iryna Antonyshyn, Frank Girgsdies, Olaf Timpe, Thomas Lunkenbein, Vanessa J. Bukas, Karsten Reuter, Robert Schlögl, Katarzyna Skorupska, Axel Knop‐Gericke, Beatriz Roldán Cuenya   +22 more
wiley   +1 more source

Existence of solutions for a higher order non-local equation appearing in crack dynamics

, 2010
In this paper, we prove the existence of non-negative solutions for a non-local higher order degenerate parabolic equation arising in the modeling of hydraulic fractures.
A Mellet, Adachi J I Detournay E, Agranovich M S, Bernis F, Bernis F, Bernis F, Bernis F, Bertozzi A L, Bertsch M, C Imbert, Crouch S L, Dal Passo R, Dal Passo R, Grün G, Grün G, Lions J-L, Peirce A P, Zheltov Y P   +17 more
core   +1 more source

ENERGY-CONSERVING AND RECIPROCAL SOLUTIONS FOR HIGHER-ORDER PARABOLIC EQUATIONS

Journal of Computational Acoustics, 1999
The energy conservation law and the flow reversal theorem are valid for underwater acoustic fields. In media at rest the theorem transforms into well-known reciprocity principle. The presented parabolic equation (PE) model strictly preserves these important physical properties in the numerical solution.
openaire   +2 more sources

Field‐Free, Deterministic Giant Spin‐Orbit Torque Switching of 1.3 T Perpendicular Magnetization With Symmetry‐Lifted Topological Surface States

Advanced Materials, EarlyView.
We show a giant, bias‐field free, deterministic, spin‐orbit‐torque switching of perpendicular hard magnets with HC over 1.3 T. By combining the three‐fold 3m symmetry from topological insulator surface states with the rectangular mm2 symmetry from the 2 x 1 intercalation in Cr3Te4, the interface symmetry is significantly reduced into a unidirectional m
He Ren, Yawen Peng, Meixin Cheng, Yu Shi, Reza Asadi, Adam W. Tsen, Guo‐Xing Miao   +6 more
wiley   +1 more source

Heat polynomial analogs for higher order evolution equations

Electronic Journal of Differential Equations, 2001
Polynomial solutions analogous to the heat polynomials are demonstrated for higher order linear homogeneous evolution equations with coefficients depending on the time variable.
G. N. Hile, Alexander Stanoyevitch
doaj  

Kinetics of potassium release in sweet potato cropped soils: a case study in the highlands of Papua New Guinea [PDF]

Solid Earth, 2015
The present study attempts to employ potassium (K) release parameters to identify soil-quality degradation due to changed land use patterns in sweet potato (Ipomoea batatas (L.) Lam) farms of the highlands of Papua New Guinea.
B. K. Rajashekhar Rao
doaj   +1 more source

A Perturbation Series for Cauchy's Problem for Higher-Order Abstract Parabolic Equations [PDF]

Proceedings of the National Academy of Sciences, 1970
The application of Phillips' perturbation theorem to Cauchy's problem for higher-order parabolic equations is justified by an argument from the theory of Fourier transforms of entire functions.
Donaldson, J. A., Hersh, R.
openaire   +2 more sources