Results 71 to 80 of about 2,823 (194)

A Sub‐Microsecond Switch Enabling SWIFT 23Na Imaging at 10.5 T

Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1991-2003, October 2026.
ABSTRACT PurposeTo enable sodium SWIFT imaging, which is a zero‐echo time imaging technique, at ultra‐high magnetic fields through the development of custom electronics hardware, and to showcase this capability with in vivo imaging results. MethodsThe custom hardware developed consists of a high‐speed optical trigger with 10 ns resolution, an in‐bore ...
Russell L. Lagore, Simon Schmidt, Edward J. Auerbach, Naoharu Kobayashi, Christoph Schildknecht, Steen Moeller, Elnaz Mahmoudi Mahmoudalilou, Štefan Zbýň, Jutta Ellermann, Gregor Adriany, Gregory J. Metzger   +10 more
wiley   +1 more source

Enhancing Reference Tracking in Induction Motor Drives: A Hybrid Model Predictive Control and Artificial Neural Network Approach

International Journal of Robust and Nonlinear Control, Volume 36, Issue 14, Page 6719-6738, 25 September 2026.
ABSTRACT Induction motors (IMs) are widely used in industry for their robustness and cost‐effectiveness, yet their nonlinear and multivariable dynamics pose significant challenges for high‐performance speed control. Model Predictive Control (MPC) is a well‐established solution but suffers from limitations related to model accuracy and parameter ...
Asier del Rio, Oscar Barambones, Eneko Artetxe, Jokin Uralde, Isidro Calvo   +4 more
wiley   +1 more source

Design of a Three‐Phase PWM Rectifier Based on Improved Whale Optimization Algorithm Optimized Fuzzy Control

Advanced Control for Applications, Volume 8, Issue 3, September 2026.
Schematic diagram of the whale optimization algorithm (WOA)–optimized fuzzy proportional–integral–derivative (PID) controller. The WOA is employed to dynamically tune the scaling factor expressions and fuzzy control parameters (a(e)a(e), a(ec)a(ec), βpβp, βiβi), as well as the initial PID gains (kp0kp0, ki0ki0), based on the error (ee) and its ...
Xiaosong Tian, Meiguang Jiang, Congguo Jiang, Guangya Liu, Jun Zhang, Xiangwen Lv, Weijiang Yang, Ruoyu Yang   +7 more
wiley   +1 more source

Quadrature Spatial Modulation for Cooperative MIMO 5G Wireless Networks

2016 IEEE Globecom Workshops (GC Wkshps), 2016
In this paper, quadrature spatial modulation (QSM) is used in a cooperative decode-and-forward (DF) diversity systems in order to enhance the overall reliability and energy efficiency. In particular, a multi-antenna source communicates with a single-antenna destination with the help of a multi-antenna DF relay in the presence of a direct link. To study
Ali Afana, Eylem Erdogan, Salama Ikki
openaire   +2 more sources

A New Lidar‐Based Observational Estimate for a Short‐Term Longwave High‐Cloud Feedback

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract High clouds play a substantial role in modulating the Earth's top‐of‐atmosphere radiative energy budget. Models project that changes in high‐cloud altitude and area in response to warming will have a net warming effect within the tropics. Yet, to our knowledge, a robust global observational constraint of a short‐term cloud feedback associated ...
J. A. Pilewskie, G. Cesana, A. Arouf, T. Vaillant de Guélis   +3 more
wiley   +1 more source

Index modulation aided generalized space-time block coding: A unified MIMO framework

Digital Communications and Networks
In this paper, Index Modulation (IM) aided Generalized Space-Time Block Coding (GSTBC) is proposed, which intrinsically exploits the benefits of IM concept, diversity gain and spatial multiplexing gain.
Zhiqin Wang, Hui Liu, Lixia Xiao, Liuke Li, Guochao Song, Tao Jiang   +5 more
doaj   +1 more source

The Influence of Aged Smoke on Urban Ozone: Aircraft Measurements in Chicago During the 2023 Canadian Wildfires

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract As large wildfires become more frequent and severe in North America due to heightened fuel aridity and fire weather conditions driven by anthropogenic climate change, wildfire smoke has an increasingly important influence on air quality. Transported smoke can impact urban boundary layer ozone (O3) directly, via the entrainment of O3 formed in ...
W. S. Chace, C. Womack, A. Ahern, K. Ball, K. H. Bates, B. Bohn, C. A. Brock, M. Coggon, J. D. Crounse, N. Desai, H. Fuchs, J. Gilman, J. Gristey, H. N. Huynh, R. Jackson, C. M. Jernigan, J. Kaiser, M. Lin, M. Lyu, A. M. Middlebrook, G. A. Novak, A. Novelli, J. Peischl, A. Piasecki, M. A. Robinson, A. Rollins, N. B. Schafer, M. Selby, C. Senff, A. Stainsby, C. E. Stockwell, S. J. Taylor, S. Thakali, V. Treadaway, P. R. Veres, C. Warneke, E. Waxman, P. O. Wennberg, G. M. Wolfe, L. Xu, K. Zuraski, S. S. Brown   +41 more
wiley   +1 more source

Structure, Propagation and Variability of the 5‐Day Rossby‐Haurwitz Wave

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract The 5‐day wave is the gravest free Rossby mode predicted by the Laplace shallow water equations, with a latitudinally symmetric, zonal wavenumber one theoretical structure in geopotential extending from pole to pole. It propagates westward along the equator at about 98 m s−1 ${\mathrm{s}}^{-1}$ and was first observed in surface pressure data ...
G. N. Kiladis, R. A. Madden
wiley   +1 more source

Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach

Information, 2018
The conventional channel estimation schemes for filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) systems are mainly based on preamble methods.
Han Wang, Jianqing Liao, Lingwei Xu, Xianpeng Wang   +3 more
doaj   +1 more source

Decoupling Backward Scattering Control and Forward Beamformed Communication in a Shared‐Aperture Retro‐Reflective/Transmissive Metasurface

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Conceptual illustration of the retro‐reflective and transmissive metasurface (RRTM). The blue radar establishes communication with the UAV via the transmissive mode, whereas the purple surveillance radar acquires the status of friendly units through the retro‐reflective mode and the two modes operate simultaneously within the same decoupled aperture ...
Shulei Zhang, Ruichao Zhu, Yuxiang Jia, Fan Wu, Xinqi Cai, Zhihui Zhang, Dan Liu, Yuxiao Guo, Jiafu Wang   +8 more
wiley   +1 more source