Results 91 to 100 of about 378,739 (288)

Quantum-inspired algorithm for general minimum conical hull problems

Physical Review Research, 2020
A wide range of fundamental machine learning tasks that are addressed by the maximum a posteriori estimation can be reduced to a general minimum conical hull problem.
Yuxuan Du, Min-Hsiu Hsieh, Tongliang Liu, Dacheng Tao   +3 more
doaj   +1 more source

Asymmetry of the Ferroelectric Phase Transition in BaTiO3

Advanced Materials, EarlyView.
Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz, Elangovan Hemaprabha, Rajesh Mandal, Pravin Kavle, Jamil Tanus, Maya Barzilay, Ching‐Che Lin, David Spirito, Semën Gorfman, Bo Wang, Ignacio J. Villar‐García, Neus Domingo, Long‐Qing Chen, Lane W. Martin, Yachin Ivry   +14 more
wiley   +1 more source

A Real-Valued Polynomial Rooting Method for Fast Direction of Arrival Estimation With Large Uniform Linear Arrays

IEEE Access, 2019
When used for direction of arrival (DOA) estimation with large uniform linear arrays (ULAs), both root-MUSIC and unitary root-MUSIC (U-root-MUSIC) involve high-dimension eigenvalue decomposition (EVD) and high-degree polynomial rooting computations.
Feng-Gang Yan, Xiang Li, Tao Jin, Ling Liu, Ming Jin   +4 more
doaj   +1 more source

On the Complexity of the Generalized MinRank Problem

, 2013
We study the complexity of solving the \emph{generalized MinRank problem}, i.e. computing the set of points where the evaluation of a polynomial matrix has rank at most $r$.
Din, Mohab Safey El, Faugère, Jean-Charles, Spaenlehauer, Pierre-Jean   +2 more
core   +3 more sources

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

Dynamic Optical Lattices Through Conducting Polymer‐Gated Confinement

Advanced Materials, EarlyView.
The conducting polymer gate is incorporated into organic dielectric lattices to control the dynamic switching of nonlocal Mie resonances in the visible/NIR regions. The “closed gate” from oxidized PEDOT confines the light within dielectric nanocylinders and activates nonlocal Mie resonances, while the “opened gate” from reduced PEDOT facilitates ...
Dongqing Lin, Yulong Duan, Suraya Kazi, Magnus P. Jonsson   +3 more
wiley   +1 more source

Ultimate Polynomial Time

, 1999
The class $\mathcal{UP}$ of `ultimate polynomial time' problems over $\mathbb C$ is introduced; it contains the class $\mathcal P$ of polynomial time problems over $\mathbb C$.
Malajovich, Gregorio
core   +3 more sources

Stronger Rolle’s Theorem for Complex Polynomials

Proceedings of the American Mathematical Society, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sendov, Blagovest, Sendov, Hristo
openaire   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

On the Locally Polynomial Complexity of the Projection-Gradient Method for Solving Piecewise Quadratic Optimisation Problems. [PDF]

Entropy (Basel), 2021
Prusińska A, Szkatuła K, Tret'yakov A.
europepmc   +1 more source