Results 271 to 280 of about 651,102 (346)

A Biophysical Approach to the Design of Networks of Communication Systems

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Inspired by the growth dynamics of the protist Physarum polycephalum, we employ a formalism that describes adaptive, incompressible Hagen‐Poiseuille flows on channel networks to identify graphs connecting different nodes within Euclidean space. These graphs are either suboptimal or optimal relative to their length.
Rodrigo Almeida, Ana Filipa Valente, Rui Dilão   +2 more
wiley   +1 more source

Overlap‐Kernel EPI: Estimating MRI Shot‐to‐Shot Phase Variations by Shifted‐Kernel Extraction From Overlap Regions at Arbitrary k‐Space Locations

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose In multi‐shot EPI, shot‐dependent phase fluctuations can introduce ghost artifacts, undermining advantages for enhancing resolution or reducing distortion, particularly in diffusion scans. Here, a novel self‐navigation strategy based on shift‐invariant kernel extraction is proposed, enabling robust estimation of phase inconsistencies ...
Rui Tian, Martin Uecker, Maxim Zaitsev, Klaus Scheffler   +3 more
wiley   +1 more source

Gate engineering Fabry-Pérot resonance in altermagnetic junctions. [PDF]

Sci Rep
Lv Q, Xu Y, Liu JF, Fu PH, Yu XL.
europepmc   +1 more source

Identifying Out‐of‐Voxel Echoes in Edited MRS With Phase Cycle Inversion

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To identify the origin of out‐of‐voxel (OOV) signals based on the coherence transfer pathway (CTP) formalism using signal phase conferred by the acquisition phase cycling scheme. Knowing the CTP driving OOV artifacts enables optimization of crusher gradients to improve their suppression.
Zahra Shams, Abdelrahman Gad, Aaron T. Gudmundson, Saipavitra Murali‐Manohar, Christopher W. Davies‐Jenkins, Gizeaddis L. Simegn, Dunja Simicic, Yulu Song, Vivek Yedavalli, Helge J. Zöllner, Georg Oeltzschner, Dillip K. Senapati, Alfons Schnitzler, Peter B. Barker, Richard A. E. Edden   +14 more
wiley   +1 more source

Chemical hydrodynamics of nuclear spin states. [PDF]

Sci Adv
Acharya A, Said M, Barker SJ, Utz M, Linclau B, Kuprov I.   +5 more
europepmc   +1 more source

The Caillahua-Mendoza Stability Law: A Self-Consistent Order Field Formalism for the Geometric Unification of c and a0 (Version 3)

Caillahua Mendoza, Brandon
openalex   +1 more source

Velocity Spectrum Imaging Using Velocity Encoding Preparation Pulses

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The goal of this article is to introduce a technique to measure the velocity distribution of water inside each voxel of an MR image. The method is based on the use of motion sensitizing gradients with changing first moment to encode velocity. As such, it is completely non‐invasive and requires no contrast injections.
Luis Hernandez‐Garcia, Alberto L. Vazquez, Douglas C. Noll   +2 more
wiley   +1 more source

Quantum phase transition in the Casten pyramid using entanglement entropy in the semi-classical approximation of IBM-2. [PDF]

Sci Rep
Ghapanvari M, Sayedi M, Jafarizadeh MA, Amiri N.   +3 more
europepmc   +1 more source

Time‐Division Multiplexing for Parallel Transmission at Ultra‐High Field With Limited RF Channels

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Investigating time‐division multiplexing for parallel transmission in ultra high‐field imaging, striving for homogeneous whole brain excitation with a limited number of RF channels. Methods A fast RF switch was built to alternately route 8 transmit channels to each row of a double‐row 16‐element transmit coil array at a 9.4 T human MRI
Felix Glang, Georgiy A. Solomakha, Dario Bosch, Klaus Scheffler, Nikolai I. Avdievich   +4 more
wiley   +1 more source

Hybrid grey Wolf-Cuckoo search optimized linear quadratic regulator for robust quadrotor control. [PDF]

Sci Rep
Sharma R, Kumar V, Pallav, Kumar V.
europepmc   +1 more source