Results 71 to 80 of about 73,525 (314)

Effect of Aspect Ratio on the Three-Dimensional Global Instability Analysis of Incompressible Open Cavity Flows

, 2011
The stability analysis of open cavity flows is a problem of great interest in the aeronautical industry. This type of flow can appear, for example, in landing gears or auxiliary power unit configurations.
Vassilios Theofilis, Elmer Gennaro, Gómez, Raquel, Theofilis, Vassilios, Paredes Gonzalez, Pedro, Pedro Paredes, Daniel Rodriguez, Theofilis, V., Tendero Ventanas, Juan Angel, Fernando Meseguer, Daniel Rodriguez Alvarez, Meseguer Garrido, Fernando, Rodríguez Álvarez, Daniel, Vicente Buendia, Javier de, Valero Sánchez, Eusebio, Marcello Medeiros, Gennaro, E. M., Paredes, P., Javier de Vicente, Eusebio Valero, J. Tendero, Gennaro, Elmer, Medeiros, M., Tendero, J. A., Gómez Carrasco, Francisco, Rodríguez, D., Medeiros, M. A. F.   +26 more
core   +1 more source

Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys

Advanced Science, EarlyView.
This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin, Cheng‐Wei Lee, Nate S.P. Bernstein, Thi Nguyen, Ande Bryan, Eli Cooper, John S. Mangum, Sage R. Bauers, Andriy Zakutayev, Keisuke Yazawa, Prashun Gorai, Rebecca W. Smaha   +11 more
wiley   +1 more source

Stability Analysis and HIL Validation of PV Park Voltage Control Considering Communication Delays

IEEE Open Journal of Power Electronics
With advances in industrial data communication technologies, MW-scale PV parks increasingly depend on communication-based coordination among Power Electronic Converters (PECs) to ensure precise voltage regulation and stability, especially during grid ...
Behnam Daftary Besheli, Federico Cecati, Sante Pugliese, Marco Liserre Fellow, Johanna Kristin Maria Becker, Mario Paolone   +5 more
doaj   +1 more source

Enhancing Oscillation Damping in an Interconnected Power System with Integrated Wind Farms Using Unified Power Flow Controller

Energies, 2019
The well-developed unified power flow controller (UPFC) has demonstrated its capability in providing voltage support and improving power system stability. The objective of this paper is to demonstrate the capability of the UPFC in mitigating oscillations
Ping He, Seyed Ali Arefifar, Congshan Li, Fushuan Wen, Yuqi Ji, Yukun Tao   +5 more
doaj   +1 more source

Eigenvalue sensitivity analysis for dynamic power system

, 2006
Eigenvalue sensitivity analysis has been an effective tool for power system controller design. However, research on eigenvalue sensitivity with respect to system operating parameters is still limited.
Zhang, P., Dong, Z Y, Pei Zhang, Ma, J, Jian Ma, Zhao Dong   +5 more
core   +1 more source

Extreme Polaritonic Interactions in a Room‐Temperature Designable Sub‐Nanocavity Quantum Electrodynamic Platform

Advanced Science, EarlyView.
 A nanoparticle‐cluster‐on‐mirror (NPcoM) serves as a functionally deterministic sub‐nanocavity that emulates picocavities, enabling extreme light–matter interactions and polaritonic phenomena. ABSTRACT Pushing nanoscale optical confinement to its ultimate limits defines the regime of nano‐cavity quantum electrodynamics (nano‐cQED), where light‐matter ...
Huatian Hu, Xin Shu, Zhiwei Hu, Di Zheng, Ruiqian Zhang, Ximin Cui, Wei Dai, Xiang Lan, Xiaobo Han, Wen Chen, Hongxing Xu   +10 more
wiley   +1 more source

Spectral analysis of Sinai’s walk for small eigenvalues

The Annals of Probability, 2008
Published in at http://dx.doi.org/10.1214/009117907000000178 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
BOVIER A, FAGGIONATO, ALESSANDRA
openaire   +6 more sources

Eigenvalue and Generalized Eigenvalue Problems: Tutorial

, 2023
This paper is a tutorial for eigenvalue and generalized eigenvalue problems. We first introduce eigenvalue problem, eigen-decomposition (spectral decomposition), and generalized eigenvalue problem.
Ghojogh, Benyamin, Karray, Fakhri, Crowley, Mark   +2 more
core  

Type‐II Dirac Fermions in Monolayer In2O: Interplay of Magnetotransport, Spin Hall Effect, and Superconductivity

Advanced Science, EarlyView.
First‐principles calculations reveal that monolayer In2O${\rm In}_2{\rm O}$ hosts type‐II Dirac fermions near the Fermi level, which split into Weyl points under spin‐orbit coupling. The material exhibits negative and giant magnetoresistance, a pronounced spin Hall effect, and phonon‐mediated superconductivity at 1.5 K, establishing it as a unique ...
Qing‐Bo Liu, De‐Ming Feng, Wen‐Neng Zhao, Yu‐Yang Zhao, Lun Xiong, Xing‐Yi Tan, Hua‐Hua Fu   +6 more
wiley   +1 more source

On the sensitivity analysis of eigenvalues

The Electronic Journal of Linear Algebra, 2015
Let $ \lam$ be a simple eigenvalue of an $n$-by-$n$ matrix $A.$ Let $y$ and $ x$ be left and right eigenvectors of $A$ corresponding to $\lam,$ respectively. Then, for the spectral norm, the condition number $\cond(\lam, A) := \|x\|_2\, \|y\|_2 /{|y^*x|}$ measures the sensitivity of $\lam$ to small perturbations in $A$ and plays an important role in ...
openaire   +1 more source