Results 81 to 90 of about 106,643 (308)

Effect of Magnetic Islands on Neoclassical Heat Diffusivity in a Global Tokamak Simulation

Contributions to Plasma Physics, EarlyView.
ABSTRACT Resonant magnetic perturbations (RMPs) alter magnetic field topology via island formation and can modify core transport in toroidal fusion devices. Using the global gyrokinetic particle‐in‐cell code XGC‐S, originally developed for stellarator geometries, we quantify how island topology affects neoclassical heat transport in a circular tokamak ...
Joseph X. Li, Toseo Moritaka, Ryutaro Kanno, Gakushi Kawamura, Robert Hager, C.‐S. Chang   +5 more
wiley   +1 more source

Uncertainty-biased molecular dynamics for learning uniformly accurate interatomic potentials

npj Computational Materials
Efficiently creating a concise but comprehensive data set for training machine-learned interatomic potentials (MLIPs) is an under-explored problem. Active learning, which uses biased or unbiased molecular dynamics (MD) to generate candidate pools, aims ...
Viktor Zaverkin, David Holzmüller, Henrik Christiansen, Federico Errica, Francesco Alesiani, Makoto Takamoto, Mathias Niepert, Johannes Kästner   +7 more
doaj   +1 more source

Quadrilateral NEC Groups [PDF]

, 2008
H ve D hiperbolik düzlemin üst yarı düzlem modeli ve birim daire modeli olarak adlandırılan iki farklı modelidir. Hiperbolik düzlemin izometrileri ötelemeler, dönmeler, yansımalar, ötelemeli yansımalar ve limit rotasyonlar olarak adlandırılan ...
Durmaz, Mustafa
core  

Effect of Sequential and Combined Space‐Based Stressors on Perovskite Solar Cell Stability

EcoEnergy, EarlyView.
A correlation between loss in performance and mobile ion concentration has been established by sequential stressing of perovskite solar cells under Low Earth Orbit conditions with exposure to protons, light, and thermal cycling. It is shown that the loss in performance increases when ion concentration increases and vice versa.
Saivineeth Penukula, Brandon K. Durant, Megh N. Khanal, Mohin Sharma, Todd A. Byers, Vincent R. Whiteside, Haley P. Harblin, Ian R. Sellers, Bibhudutta Rout, Nicholas Rolston   +9 more
wiley   +1 more source

Community‐level egg and larval trait interactions with the Amazon River plume determine its role as a dispersal barrier

Ecography, EarlyView.
The Amazon River plume (ARP) functions as a dynamic and porous biogeographic barrier whose permeability to larval dispersal depends on the interplay between species' biological traits and oceanographic processes. Using biophysical modeling combined with a dual analytical framework, namely a multivariate regression tree (MRT) and a generalized additive ...
Ramon B. Santos, Nelson A. Gouveia, Douglas F. M. Gherardi   +2 more
wiley   +1 more source

Wideband Delta-Sigma Radio-Over-Fiber Embedding a Sparse Nonlinear ISI Model Derived From Neural Networks

IEEE Access
This paper presents a novel sparse nonlinear intersymbol interference model (SnISIM) for delta-sigma radio-over-fiber (DS-RoF) systems, designed to address severe pulse distortion caused by narrowband bandpass filters in wideband millimeter-wave ...
Masaaki Tanio, Daisaku Ogasahara, Kazushi Muraoka   +2 more
doaj   +1 more source

NEC rings

Filomat, 2018
A ring R is called NEC if for any a, b ? N(R), ab = ba. The class of NEC rings is a proper generalization of the class of CN rings. First, with the aid of NEC rings, some characterizations of CN rings and reduced rings are given. Next we extend many properties of CN rings to NEC rings such as we show that NEC rings are directly finite and ...
Pan, Yong, Li, Decai, Wei, Junchao
openaire   +3 more sources

Absence seizures: Update on signaling mechanisms and networks

Epilepsia Open, EarlyView.
Abstract Absence seizures (AS) are a hallmark of genetic generalized epilepsies (GGE), characterized by brief episodes of impaired consciousness accompanied by electroencephalographic spike‐and‐wave discharges (SWDs). Traditionally attributed to cortico‐thalamo‐cortical (CTC) dysrhythmia, emerging evidence suggests a more intricate pathophysiological ...
Ozlem Akman, Filiz Onat
wiley   +1 more source

Does digital cognitive behavioral therapy improve the insomnia and depression of workers to healthy levels? An open trial

BioPsychoSocial Medicine
Background Cognitive behavioral therapy for insomnia (CBT-I) has a high potential for improving insomnia and depressive symptoms; however, it is unclear whether the improvement of symptoms reaches the level of healthy people without these symptoms.
Isa Okajima, Miho Suzuki, Noriko Tanizawa, Ikuo Kajiyama, Reiko Ichikawa, Jou Akitomi   +5 more
doaj   +1 more source

PMU‐Based Wide Area Monitoring With Machine Learning to Prevent Blackouts in Bangladesh Power System

Energy Science &Engineering, EarlyView.
A Unified Real‐time Dynamic State Measurements (URTDSM) system with PMU and Phasor Data Concentrator (PDC) deployment plan has been proposed to avoid blackout in the Bangladeshi power system. Machine learning has been used to process data from PMU to identify abnormal events. ABSTRACT The electrical power system must be trustworthy and secure enough to
Imi Bintey Fariha Rahman, Md. Minarul Islam, Md. Shahin Parvej, Abdul Hasib Chowdhury, Taha Selim Ustun, Kashem M. Muttaqi   +5 more
wiley   +1 more source