Results 81 to 90 of about 51,902 (232)

Strong disorder renormalization group study of aperiodic quantum Ising chains

, 2012
We employ an adaptation of a strong-disorder renormalization-group technique in order to analyze the ferro-paramagnetic quantum phase transition of Ising chains with aperiodic but deterministic couplings under the action of a transverse field.
André P Vieira, Burkhardt T W, de Oliveira Filho F J, Fleury J Oliveira Filho, Grimm U, Guttmann A J, Harris A B, Hermisson J, Hermisson J, Hoyos J A, Iglói F, Luck J M, Maicon S Faria, McCoy B, Szállás A   +14 more
core   +1 more source

Reduced occurrence of alpha waves during resting state predicts high attention‐deficit/hyperactivity disorder traits in young adults

JCPP Advances, EarlyView.
Abstract Background Attention‐deficit/hyperactivity disorder (ADHD) is a neurodevelopmental condition with significant cognitive and social impacts. Identifying reliable biomarkers for ADHD is crucial for developing personalised therapies. Electroencephalography (EEG) alpha oscillations (8–12 Hz) have been suggested as a potential biomarker, but ...
Julio Rodriguez‐Larios, Ümit Aydin, Gráinne McLoughlin   +2 more
wiley   +1 more source

The influence of nonlinear resonance on human cortical oscillations

Communications Biology
Whether macroscale brain signals reflect linear or nonlinear organization remains poorly characterized. This distinction matters for modeling neural dynamics and interpreting oscillatory biomarkers of cognition and disease.
Ying Wang, Min Li, Ronaldo García Reyes, Maria L. Bringas-Vega, Ludovico Minati, Michael Breakspear, Pedro A. Valdes-Sosa   +6 more
doaj   +1 more source

Optimized Multilayer Structures With Ultrabroadband Near-Perfect Absorption

IEEE Photonics Journal, 2020
We present aperiodic multilayer structures with ultrabroadband near-perfect absorption in the visible and near-infrared wavelength range. We use a hybrid optimization algorithm coupled with the transfer-matrix method, to optimize both the material ...
Chenglong You, Corey T. Matyas, Yin Huang, Jonathan P. Dowling, Georgios Veronis   +4 more
doaj   +1 more source

Entanglement entropy in aperiodic singlet phases

, 2007
We study the average entanglement entropy of blocks of contiguous spins in aperiodic XXZ chains which possess an aperiodic singlet phase at least in a certain limit of the coupling ratios. In this phase, where the ground state constructed by a real space
Amico L Fazio R Osterloh A Vedral V, Bonesteel N E Yang K, Calabrese P, Cardy J, De Chiara G, Harris A B, Hermisson J, Iglói F Juhász R Zimborás Z, Latorre J I, Legeza Ö Sólyom J Tincani L Noack R M, Luck J M, Nielsen M A, Peschel I, Peschel I, Peschel I, Peschel I, Rappoport T G Ghivelder L Fernandes J C Guimaraes R B Continentino M A, Refael G Moore J E, Róbert Juhász, Saguia A Sarandy M S Boechat B Continentino M A, Santachiara R, Zamolodchikov A B, Zoltán Zimborás   +22 more
core   +3 more sources

Quasicrystals, aperiodic order, and groupoid von Neumann algebras

Comptes Rendus. Mathématique, 2002
We introduce tight binding operators for quasicrystals that are parametrized by Delone sets. These operators can be regarded in a natural operator algebra framework that encodes the long range aperiodic order. This algebraic point of view allows us to study spectral theoretic properties.
Lenz, Daniel, Stollmann, Peter
openaire   +2 more sources

CardiacDP: An R package for rapid automated cardiac data processing, integrating autocorrelation, a genetic algorithm, and a tracking index

Limnology and Oceanography: Methods, EarlyView.
Abstract Heart rate is a popular proxy of physiological responses, but the highly complex and variable cardiac data obtained from organisms such as marine invertebrates pose a major challenge to efficient and accurate data processing. To address this, we developed a novel, integrative algorithm for rapid and automated cardiac data processing.
Sarah L. Y. Lau, Adrian T. C. Wong, Yi‐Fei Gu, Tin Yan Hui   +3 more
wiley   +1 more source

Local Field Aperiodic Spectral Power Modulated by Deep Brain Stimulation in Parkinson's Disease

Movement Disorders, EarlyView.
Abstract Background Aperiodic spectral broadband power has been described recently as reflecting Parkinson's disease (PD) severity. It has therefore become an increasing focus of research interest in the context of the new adaptive deep brain stimulation (DBS) approach.
Martin Lamoš, Aneta Žáčková, David Ulčák, Benjamin Gurka, Daniel Brzuchanski, Lucia Šmahovská, Martina Bočková   +6 more
wiley   +1 more source

Learning from feedback is independent from feedback visibility, but supported by aperiodic neural activity

NeuroImage
Humans and other animals learn from feedback, by tending to repeat rewarded behavior and change behavior that receives negative feedback. Previous findings suggest that feedback does not need to be consciously perceived in order to be effective.
DanDan Liu, Shiwei Jia, Yanliang Sun, Lorenza Colzato, Bernhard Hommel   +4 more
doaj   +1 more source

Formation-Containment Control of Second-Order Multiagent Systems via Intermittent Communication

Complexity, 2018
This paper investigates the formation-containment control of second-order multiagent systems with intermittent communication. Distributed coordination control algorithms are proposed under aperiodic intermittent communication, where each agent only ...
Mao-Dong Xia, Cheng-Lin Liu, Fei Liu
doaj   +1 more source