Results 51 to 60 of about 2,170 (281)

Minimization of Nyquist ghosting for echo-planar imaging at ultra-high fields based on a "negative readout gradient" strategy [PDF]

, 2009
Purpose: To improve the traditional Nyquist ghost correction approach in echo planar imaging (EPI) at high fields, via schemes based on the reversal of the EPI readout gradient polarity for every other volume throughout a functional magnetic resonance ...
Just, N., Gruetter, R., Lei, Hongxia, Just, Nathalie, Lei, H., van der Zwaag, Wietske, Marques, Jose P., Marques, José P, van der Zwaag, W., Kober, Tobias, Marques, J.P., Gruetter, Rolf, Kober, T.   +12 more
core   +1 more source

Echoes and Ghosts: An ironic footnote to repetition and re‐presentation

Journal of Literary Studies, 1993
Summary In one of the footnotes Kierkegaard added to his treatise on irony (1841) the old opposition between the cold north and the sunny south is deconstructed. This deconstruction is carried out by means of the echo: the Greek nymph Echo is called Bergmund or Zwergmund in the north; in the north Echo is a Troll.
openaire   +1 more source

A new drag and lift correlation for spherocylinders from fully resolved Immersed Boundary Method

AIChE Journal, EarlyView.
Abstract Many industrial processes deal with non‐spherical particles, e.g., mineral mining and biomass conversion. It is crucial to understand the particles' hydrodynamics to control and optimize these processes. To extend the current state‐of‐the‐art from arrays of spherical particles to spherocylindrical particles, we performed extensive particle ...
A. H. Huijgen, Y. Sterkenburgh, Y. Tang, N. G. Deen, M. W. Baltussen   +4 more
wiley   +1 more source

SENSE reconstruction for multiband EPI including slice-dependent N/2 ghost correction

, 2016
PURPOSE: Sensitivity encoding (SENSE) reconstruction of multiband echo planar imaging (EPI) may cause artifacts when simultaneously excited slices require different phase correction to remove the EPI-specific ghost shifted by half of the matrix size (N).
Seuven, Aline, Martin Buehrer, Aline Seuven, Hennel, Franciszek, Pruessmann, Klaas P, Franciszek Hennel, Constantin von Deuster, Buehrer, Martin, Klaas P. Pruessmann, von Deuster, Constantin   +9 more
core   +1 more source

Ghost reduction in echo‐planar imaging by joint reconstruction of images and line‐to‐line delays and phase errors [PDF]

Magnetic Resonance in Medicine, 2017
PurposeTo correct line‐to‐line delays and phase errors in echo‐planar imaging (EPI).Theory and MethodsEPI‐trajectory auto‐corrected image reconstruction (EPI‐TrACR) is an iterative maximum‐likelihood technique that exploits data redundancy provided by multiple receive coils between nearby lines of k‐space to determine and correct line‐to‐line ...
Ianni, Julianna D., Welch, E. Brian, Grissom, William A.   +2 more
openaire   +3 more sources

Parametric Analysis of Spiking Neurons in 16 nm Fin Field‐Effect Transistor Technology

Advanced Intelligent Discovery, EarlyView.
Energy efficient computing has driven a shift toward brain‐inspired neuromorphic hardware. This study explores the design of three distinct silicon neuron topologies implemented in 16 nm fin field‐Effect transistor technology. While the Axon‐Hillock design achieves gigahertz throughput, its functional fragility persists. The Morris–Lecar model captures
Logan Larsh, Raiyan Siddique, Sarah S. Sharif, Yaser Mike Banad   +3 more
wiley   +1 more source

“The hero in a ghost story laughs a nimble laugh” : The Woman Warrior: Memoirs of a Girlhood Among Ghosts ou la réinvention du canon littéraire états-unien chez Maxine Hong Kingston

Caliban: French Journal of English Studies
In this article, I will show that the numerous ghosts in The Woman Warrior by Maxine Hong Kingston equate the spectrality of minor literatures, especially Chinese American literature, which are somehow still not considered as equally representative of ...
Christelle Ha Soon-Lahaye
doaj   +1 more source

Être là ou ne pas être là – esquisse de typologie du spectral dans quelques œuvres littéraires occidentales contemporaines

Between, 2017
Abrstact (english) Contemporary realistic fiction sometimes includes features which echo ancient ghost tales. Some characters come back after their death, other experience great difficulties inhabiting the present, as if they were haunted.
Catherine Grall
doaj   +1 more source

Pancake Lenses through Curved Lamination for Compact Virtual Reality

Advanced Intelligent Systems, EarlyView.
This article presents an ultrathin VR optical system based on a 1.35 in. microdisplay, leveraging curved lamination technology. Compared to mainstream solutions, the proposed design demonstrates superior compactness (volume compression by 12%) and enhanced optical performance.
Jiaping Sun, Dewen Cheng, Cheng Chi, Yuefan Shan, Da Wang, Chao Ping Chen   +5 more
wiley   +1 more source

Compact Modeling of Volatile‐Switching Electrochemical Metallization Memory Cells by Means of the Electromotive Force

Advanced Intelligent Systems, EarlyView.
A volatile‐switching compact model of electrochemical metallization memory cells for neuromorphic architecture is developed and validated by reliable reproduction of device characterization measurements: I−V sweeps, SET kinetics, relaxation dynamics.
Rana Walied Ahmad, Solomon Amsalu Chekol, Julius Rasbach, Susanne Hoffmann‐Eifert, Stephan Menzel   +4 more
wiley   +1 more source