Results 11 to 20 of about 2,170 (281)

Lipid elimination with an echo‐shifting N/2‐ghost acquisition (LEENA) MRI [PDF]

open access: yesMagnetic Resonance in Medicine, 2015
Purpose The Dixon techniques provide uniform water‐fat separation but require multiple image sets, which extend the overall acquisition time. Here, an alternative rapid single acquisition method, lipid elimination with an echo‐shifting N/2‐ghost ...
Donnola, Shannon B   +11 more
core   +3 more sources

Multiple-scattering-induced "ghost echoes" in GPM DPR observations of a tornadic supercell [PDF]

open access: yesJournal of Applied Meteorology and Climatology, 2016
Evidence of multiple-scattering-induced pulse stretching for the signal of both frequencies of the Dual-Frequency Precipitation Radar (DPR) on the Global Precipitation Measurement (GPM) mission Core Observatory satellite is presented on the basis of ...
Kamil Mroz (7158422)   +4 more
core   +6 more sources

Investigating Intra-Pulse Doppler Frequency Coupled in the Radar Echo Signal of a Plasma Sheath-Enveloped Target

open access: yesRemote Sensing
In detecting hypersonic vehicles, the radar echo signal is coupled with an intra-pulse Doppler frequency (I-D frequency) component caused by relative motion of a plasma sheath (PSh) and the vehicle, which can induce the phenomenon of a ghost target in a ...
Bowen Bai   +5 more
doaj   +2 more sources

Fugitive Aesthetics [PDF]

open access: yesThird Text, 2022
This article discusses four recently released refugee films: Dolce Fine Giornata, Atlantics, Island of the Hungry Ghosts, and Life Overtakes Me. It draws on a range of theoretical frames, including the work of Avery Gordon and Jacques Derrida on spectrality, in order to outline the original concept of ‘fugitive aesthetics’, the narrative and stylistic ...
Bruce Bennett, Katarzyna Marciniak
openaire   +1 more source

Quantification and reduction of ghosting artifacts in interleaved echo‐planar imaging [PDF]

open access: yesMagnetic Resonance in Medicine, 1997
AbstractA mathematical analysis of ghosting artifacts often seen in interleaved echo‐planar images (EPI) is presented. These artifacts result from phase and amplitude discontinuities between lines of k‐space in the phase‐encoding direction, and timing misregistrations from system filter delays.
S B, Reeder   +3 more
openaire   +2 more sources

Boosting BOLD fMRI by K-Space density weighted echo planar imaging [PDF]

open access: yes, 2013
Functional magnetic resonance imaging (fMRI) has become a powerful and influential method to non-invasively study neuronal brain activity. For this purpose, the blood oxygenation level-dependent (BOLD) effect is most widely used. T2* weighted echo planar
Andreas J Bartsch   +14 more
core   +1 more source

Fragmentation de l’être. Mémoire et identité dans les mangas

open access: yesCaptures, 2019
Le développement de la relation entre la machine et l’individu trouve un écho fertile au sein des mangas. L’étude d’oeuvres emblématiques, comme Ghost in the Shell, Gunnm, Lain et les adaptations de Hiroshi Mori, permet de mettre en lumière leurs ...
Alexandra Aïn
doaj   +1 more source

An Efficient Channel Imbalance Estimation Method Based on Subadditivity of Linear Normed Space of Sub-Band Spectrum for Azimuth Multichannel SAR

open access: yesRemote Sensing, 2023
Azimuth multichannel (AMC) technology is one of the mainstream technical approaches to realize high-resolution wide-swath (HRWS) imaging. It has been successfully applied to several synthetic aperture radar (SAR) satellites in orbit.
Zongxiang Xu   +6 more
doaj   +1 more source

Massive mimetic cosmology

open access: yesPhysics Letters B, 2019
We study the first cosmological implications of the mimetic theory of massive gravity recently proposed by Chamseddine and Mukhanov. This is a novel theory of ghost-free massive gravity which additionally contains a mimetic dark matter component.
Adam R. Solomon   +2 more
doaj   +1 more source

Mutual Interferences of a True-Random LiDAR With Other LiDAR Signals

open access: yesIEEE Access, 2020
We investigate characteristics and impacts of the mutual interference to a LiDAR using an analog true-random signal, for autonomous vehicle applications.
Il-Pyeong Hwang, Chang-Hee Lee
doaj   +1 more source

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