Results 171 to 180 of about 34,114 (283)

Investigating the Sensitivity of the Diffusion MRI Signal to Magnetization Transfer and Permeability via Monte‐Carlo Simulations

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Magnetization transfer (MT) and water exchange via permeability operate on a similar spatiotemporal scale to water diffusion. In this study, we use a simulation‐based approach to characterize how MT and permeability impact (1) diffusion‐weighted MRI (dMRI) measurements from cylindrical substrates and (2) parameter estimation using a ...
Zhiyu Zheng, Karla L. Miller, Benjamin C. Tendler, Michiel Cottaar   +3 more
wiley   +1 more source

Energy-efficient framework based on optimal antenna selection in S-NOMA supported UAV IoT networks. [PDF]

PLoS One
Soni L, Taneja A, Alqahtani N, Alqahtani A.   +3 more
europepmc   +1 more source

Design of Differential Single‐Block and Multi‐Block Presaturated Ultrashort Echo Time Pulse Sequences for Fast and Flexible Short‐T2 Imaging

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ultrashort echo time (UTE) techniques are essential for the magnetic resonance imaging of short‐T2 signals. Current UTE techniques are time‐consuming and often require the acquisition of an inflexible volume. In this work, we implement new UTE sequences—differential single‐block presaturated UTE (δSB‐UTE) and differential multi‐block ...
Jason A. Reich, Shannon L. Taylor, Kevin D. Harkins, Rachelle L. Crescenzi, Erin L. MacMillan, Rebecca E. Feldman   +5 more
wiley   +1 more source

Interference Suppression via Joint Interference Alignment and Power Allocation in Integrated Communication and Navigation Systems. [PDF]

Sensors (Basel)
Wang X, He T, Ren X, Jing X.
europepmc   +1 more source

The Impact and Reliability of Tissue Segmentation on In Vivo Magnetic Resonance Spectroscopy Metabolite Quantification

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Quantification of metabolite concentrations using MRS requires tissue‐dependent signal corrections. Accurate estimation of voxel tissue composition is therefore essential. Commonly used brain tissue segmentation tools differ in their algorithms and implementation, potentially introducing variability in MRS‐derived concentration ...
Jessica Archibald, Kay Chioma Igwe, Antonia Kaiser, Karl Landheer, Jaimie Lee, John L. K. Kramer, Aaron T. Gudmundson, Helge J. Zöllner, Georg Oeltzschner, Candace C. Fleischer, Niklaus Zölch, Jamie Near, Mark Mikkelsen   +12 more
wiley   +1 more source

Virtual Signal Processing-Based Integrated Multi-User Detection. [PDF]

Sensors (Basel)
Wang D, Li Z.
europepmc   +1 more source

Interaction Between Vortex‐Induced Vibrations and Base Vibrations in Piezoelectric Harvesters

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In the present era, powering sensors using green energy is a significant challenge. One promising solution for the power supply of small sensors relies on piezoelectric energy harvesters excited by vortex‐induced vibrations (VIVs) generated by wind.
Michele Tonan, Ilaria Palomba, Alberto Pasetto, Alberto Doria   +3 more
wiley   +1 more source

Enhancing reliability and spectral efficiency in future wireless networks via intelligent omni-surface enhanced MU-MIMO cooperative hybrid NOMA. [PDF]

Sci Rep
Kennedy HSJ, Kumaravelu VB, Selvaprabhu P, Murugadass A, Viruthagiri S.   +4 more
europepmc   +1 more source

Populism and policy capacity: Evidence from an opposition municipality in Istanbul

Public Administration and Development, EarlyView.
Abstract Despite achievements in its conceptual rigor, policy capacity still represents a relatively depoliticized concept that fails to sufficiently consider the ways in which politics plays a role in its creation, mobilization, or decay. This article seeks to contribute to this debate by investigating the impact of populism on policy capacity, the ...
Ebru Ertugal, Faik Gür, İnan Sevinç
wiley   +1 more source

Research on Resource Allocation in Cognitive Radio Networks Assisted by IRS. [PDF]

Sensors (Basel)
Shang S, Chen Z, Zhang D, Song X, Zhou M.   +4 more
europepmc   +1 more source