Results 111 to 120 of about 685,333 (350)

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Modeling and Control of AC Microgrids Under Unbalanced Utility Grid Voltage Using the Invariant-Ellipsoid Method

IEEE Access
The increasing penetration of renewable microgrids (MGs) into utility grids (UGs) has introduced new stability and power quality challenges, especially under the unbalanced voltage of the utility grid.
Hilmy Awad, Ehab H. E. Bayoumi, Hisham M. Soliman, Michele de Santis, Paola Verde   +4 more
doaj   +1 more source

Deviations from the Schmidt-Kennicutt relations during early galaxy evolution

, 2010
We utilize detailed time-varying models of the coupled evolution of stars and the HI, H_2, and CO-bright H_2 gas phases in galaxy-sized numerical simulations to explore the evolution of gas-rich and/or metal-poor systems, expected to be numerous in the ...
Baugh, Bigiel, Chapman, Cox, Daddi, Dannerbauer, Federico I. Pelupessy, Gao, Gerritsen, Gerritsen, Gnedin, Gnedin, Israel, Kennicutt, Kennicutt, Kravtsov, Padelis P. Papadopoulos, Pak, Pelupessy, Pelupessy, Robertson, Tacconi, Tasker, Tasker, Wolfire, Wong, Wu   +26 more
core   +1 more source

Bioinspired Shape‐Memory Hook Fasteners With Programmable Interlocking and Silent Release

Advanced Engineering Materials, EarlyView.
Bioinspired hook fasteners made from epoxy shape‐memory polymers are shown to switch between strong, secure attachment and gentle, silent release when heated. By combining programmable geometry and material response, these adaptive fasteners outperform commercial systems in strength and noise control, enabling new solutions for robotics, medical ...
Maria I. Vallejo Ciro, Manuel J. Carvajal Loaiza, Rahaf Homssi, Vanessa Restrepo   +3 more
wiley   +1 more source

Grid-Forming Current-Source Converter for a Full-Scale Wind Energy Conversion System

IEEE Open Journal of Power Electronics
This paper presents a grid-forming (GFM) current-source (CSC)-based full-scale wind energy conversion system with detailed small-signal modeling, dynamic analysis, and systematic control design approach.
Amr Ahmed A. Radwan, Mahmoud Awad Elshenawy, Yasser Abdel-Rady I. Mohamed, Ehab F. El-Saadany   +3 more
doaj   +1 more source

Escape fraction of ionizing photons from high-redshift galaxies in cosmological SPH simulations

, 2010
Combing the three-dimensional radiative transfer (RT) calculation and cosmological SPH simulations, we study the escape fraction of ionizing photons (f_esc) of high-redshift galaxies at z=3-6.
Adelberger, Agertz, Becker, Bolton, Bouwens, Choi, Choi, Choi, Ciardi, Davé, Dove, Dove, Draine, Draine, Dunkley, Fan, Fan, Fioc, Fujita, Giallongo, Gnedin, Gnedin, Gnedin, Haardt, Hasegawa, Hidenobu Yajima, Iliev, Iliev, Inoue, Inoue, Iwata, Jun-Hwan Choi, Kentaro Nagamine, Komatsu, Madau, Madau, Mathis, Mori, Murray, Nagamine, Nagamine, Nakamoto, Okamoto, Osterbrock, Page, Pawlik, Razoumov, Razoumov, Ricotti, Sales, Salpeter, Shapley, Sokasian, Springel, Springel, Springel, Springel, Steidel, Susa, Susa, Umemura, Wise, Wood, Yajima   +63 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

A Simple Law of Star Formation

, 2012
We show that supersonic MHD turbulence yields a star formation rate (SFR) as low as observed in molecular clouds (MCs), for characteristic values of the free-fall time divided by the dynamical time, $t_{\rm ff}/t_{\rm dyn}$, the alfv\'{e}nic Mach number,
Evans, Federrath, Federrath, Hennebelle, Heyer, Kritsuk, Kritsuk, Krumholz, Krumholz, Lunttila, Lunttila, Murray, Padoan, Padoan, Padoan, Padoan, Padoan, Truelove   +17 more
core   +1 more source

Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)

Advanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal‐organic framework (SURMOF) platform, is on the cusp of generating the organic counterpart of the epitaxy of inorganics. The programmable and sequential SURMOF protocol, optimized by machine learning (ML), is suited for accessing high‐quality thin films of ...
Zhengtao Xu, Christof Wöll, Stefan Bräse   +2 more
wiley   +1 more source

Grid-Forming Inverters Review: Control, Stability, and the Next Stage With Artificial Intelligence and Digital Twins

IEEE Open Journal of Power Electronics
The rapid growth of Renewable Energy (RE) resources intensifies stability challenges due to their intermittency, especially in grids with low Short-Circuit Ratios (SCRs).
Yousef H. Abudyak, Mohammad Hossein Rezaei, Ahmad A. Bany Abdelnabi, Houshang Salimian Rizi, Issa Batarseh, Alex Q. Huang   +5 more
doaj   +1 more source