Results 181 to 190 of about 4,846,198 (334)

Saddle point approaches in strong field physics and generation of attosecond pulses

open access: yesPhysics reports, 2019
A. Nayak   +22 more
semanticscholar   +1 more source

Myocardial perfusion mapping with intra‐arterial spin labeling: Optimization of the labeling efficiency

open access: yesMagnetic Resonance in Medicine, EarlyView.
Abstract Purpose Intra‐arterial spin labeling (iASL) applies a labeling pulse from a transmit coil at the tip of the catheter for regional myocardial perfusion measurements during MR‐guided catheterizations. This study investigates the labeling efficiency of catheter‐mounted coils under varying conditions to enable robust iASL measurements. Methods The
Felix Spreter   +5 more
wiley   +1 more source

Robust Control for Uncertain Vertical Electric Stabilization System With Flexible Nonlinearity Using Backstepping Idea

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT A robust control method for the uncertain vertical electric stabilization system (VESS) with flexible nonlinearity is proposed, and the mismatched uncertainty is considered and compensated based on the backstepping idea. First, based on evaluating the coupling effects of the flexible nonlinearity, the analytical dynamics model of the VESS is ...
Peng Liu, Tan Lu, He Zhang
wiley   +1 more source

Navigating the Waves: The Global Pandemic's Impact on Container Shipping and Freight Rates Across Different Policy Scenarios

open access: yesNaval Research Logistics (NRL), EarlyView.
ABSTRACT The COVID‐19 pandemic has reverberated across global industries, including the international container shipping industry, where freight rates have become highly volatile. However, shipping lines appeared to thrive, particularly during the pandemic's initial 2 years.
Shiyuan Zheng, Changmin Jiang
wiley   +1 more source

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