Results 71 to 80 of about 241 (130)

Reducing Motion Artifact in High Resolution 7 T MRI Using the Magnetic Resonance Minimal Motion (“MR‐MinMo”) Head Stabilization Device

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the effectiveness of the MR‐MinMo head stabilization device in mitigating motion artifacts during long‐duration, high‐resolution 7 T MRI scans, with and without retrospective motion correction Methods The MR‐MinMo was tested on seven pediatric and 12 adult healthy volunteers using 0.6 mm isotropic, 3D Multi‐Echo Gradient ...
Jyoti Mangal, Simon Richardson, Yannick Brackenier, Matthew Gardner, Pierluigi Di Cio, Chiara Casella, Shaihan Malik, Jo Hajnal, Martina F. Callaghan, Fred Dick, David W. Carmichael   +10 more
wiley   +1 more source

Research Progress and Prospects of High‐Entropy Oxide Ceramic for Dielectric Energy Storage

National Materials, EarlyView.
This review highlights the high‐entropy strategy in high‐entropy oxide ceramics for dielectric energy storage, emphasizing enhanced breakdown strength, polarization, and thermal stability. Key material systems, computational tools, and remaining challenges in scalable fabrication are discussed, along with future research directions. ABSTRACT Dielectric
Zhongqian Lv, Yan Song, Minhao Zhang, Yuan‐Hua Lin   +3 more
wiley   +1 more source

Adaptive CUSUM Chart for Simultaneous Monitoring of Mean and Variance

Quality and Reliability Engineering International, EarlyView.
ABSTRACT Simultaneously monitoring changes in both the mean and variance is a fundamental problem in statistical process control, and numerous methods have been developed to address it. However, many existing approaches face notable limitations: Some rely on tuning parameters that can significantly affect performance; others are biased toward detecting
Gokul Parakulum, Jun Li
wiley   +1 more source

Adaptive Sliding Mode Control Design for Interval Type‐2 T–S Fuzzy Systems With Time Delay: An Event‐Triggered Approach

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT In this work, a new event‐triggered adaptive first‐order sliding mode control method is proposed for nonlinear systems with constant time delays, modeled by interval type‐2 Takagi–Sugeno (T–S) fuzzy systems. To handle matched disturbances with unknown upper bounds, a non‐overestimating adaptation strategy for the control coefficient is ...
Rodrigo Possidonio Noronha, Ginalber L. O. Serra   +1 more
wiley   +1 more source

Altered visual cortex excitatory/inhibitory ratio following transient congenital visual deprivation in humans

eLife
Non-human animal models have indicated that the ratio of excitation to inhibition (E/I) in neural circuits is experience dependent, and changes across development. Here, we assessed 3T Magnetic Resonance Spectroscopy (MRS) and electroencephalography (EEG)
Rashi Pant, Kabilan Pitchaimuthu, José P Ossandón, Idris Shareef, Sunitha Lingareddy, Jürgen Finsterbusch, Ramesh Kekunnaya, Brigitte Röder   +7 more
doaj   +1 more source

Quantitative Analysis of Size‐Dependent Structural Disorder in Ruthenium Nanoparticles by Crystal PDF Full‐Space Refinement

Small Methods, EarlyView.
A crystal PDF full‐space refinement approach integrates Bragg diffraction and total scattering to evaluate stacking faults and PDF degradation caused by point defects in ruthenium nanoparticles. This method unveils distinct size‐dependent stacking evolution in fcc‐ and hcp‐based systems, providing a unified and quantitative approach for nanoscale ...
Satoshi Hiroi, Hirotaka Ashitani, Okkyun Seo, Jaemyung Kim, Chulho Song, Loku Singgapulige Rosantha Kumara, Chen Yanna, Koji Ohara, Kohei Kusada, Hiroshi Kitagawa, Osami Sakata   +10 more
wiley   +1 more source

Fault‐Tolerant Fuzzy Boundary Control for Nonlinear Distributed Parameter Systems Under Limited Measurements and Markovian Failures

CAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT This paper proposes a boundary control method for nonlinear distributed parameter systems (DPSs) with limited boundary measurements (BMs), as typically encountered in networked cyber‐physical processes with spatially distributed dynamics such as thermal and biomedical diffusion systems.
Yanlin Li, Kaibo Shi, Yue Yu, Xiangkun Wang, Ming Zhu, Xiao Cai   +5 more
wiley   +1 more source

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

High Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov, I. L. Muzyukin, I. V. Uimanov, D. L. Shmelev, S. A. Barengolts   +4 more
wiley   +1 more source

Deciphering unusually large modulations in two related organic hydroxy channel structures

Acta Crystallographica Section B, EarlyView.
Two related organic hydroxy‐channel compounds are shown to have unusually large structural modulations.The incommensurately modulated structures of two related organic hydroxy‐channel compounds [(R)‐1‐(1,3‐dihydroxypropan‐2‐yl)‐3‐(octan‐2‐yl)urea, 1; 1‐(1,3‐dihydroxypropan‐2‐yl)‐3‐octylurea, 2] have been determined and compared to the structure of a ...
Arie van der Lee, Ioan Stroia, Li-Bo Huang, Erol Licsandru, Istvan Kocsis, Mihail Deleanu, Christian Hübschle, Mihail Barboiu, Olivier Pérez   +8 more
wiley   +1 more source

Accelerated algorithm for calculating spectra of aperiodic gratings

Компьютерная оптика
To compute the spectrum of aperiodic Bragg gratings, we address a direct scattering problem for the Helmholtz equation. Numerically, this problem necessitates the calculation of transfer matrix products, which involves multiple multiplications of matrix ...
L.L. Frumin, A.E. Chernyavsky
doaj   +1 more source