Several methods for updating the ghost cell regions of large, distributed arrays are described and results on their relative efficiencies are presented. It was found that no single algorithm provided optimal performance on all platforms and that the most efficient update depended on the details of the system architecture.

Within the framework of lattice QCD we investigate different aspects of QCD in Landau gauge using Monte Carlo simulations. In particular, we focus on the low momentum behavior of gluon and ghost propagators. The gauge group is that of QCD, namely SU(3). For our study of the lattice gluodynamic, simulations were performed on several lattice sizes ranging from 12 to 48 at the three values of the ...

Human red blood cell ghosts, prepared by simple hypotonic lysis are filled with cytoplasmic proteins. These solid ghosts can transport K+ and Na+ against concentration gradients in the presence of ATP. In hollow red cell ghosts prepared by repeated hypotonic lysis followed by high salt wash, this ability to transport K+ and Na+ in the presence of ATP is lost even though these hollow ghost membr...

The Kugo–Ojima confinement criterion and its relation to the infrared behaviour of the gluon and ghost propagators in Landau gauge QCD are reviewed. The realization of this confinement criterion (which in Landau gauge relates to Zwanziger's horizon condition) results from quite general properties of the ghost Dyson– Schwinger equation. The numerical solutions for the gluon and ghost propagators...

We show that off-diagonal gluons and off-diagonal ghosts acquire their masses dynamically in QCD if the maximal Abelian gauge is adopted. This result strongly supports the Abelian dominance in low-energy region of QCD. The mass generation is shown to occur due to ghost–anti-ghost condensation caused by attractive quartic ghost interactions within the Abelian projected effective gauge theory (de...

PURPOSE A ghost correction strategy for Simultaneous Multi-Slice (SMS) EPI methods that provides improved ghosting artifact reduction compared to conventional methods is presented. Conventional Nyquist ghost correction methods for SMS-EPI rely on navigator data that contain phase errors from all slices in the simultaneously acquired slice-group. These navigator data may contain spatially nonlin...

The Geophysical High Order Suite for Turbulence (GHOST) is a highly scalable Fortran 90-95 pseudo–spectral code that solves a variety of PDEs that are often encountered in turbulence studies. The use of pseudo–spectral methods has a long and distinguished history in the turbulence community that hardly needs expounding upon. The numerics employ a GalerkinFourier spectral method and nonlinear te...

Image 1. Upper panels: Peripheral blood smears of case 1 (A) and 2 (B), showing marked anisopoikilocytosis, with formation of hemi-ghost blister cells (*) and presence of circulating erythroid precursors (insets). Lower panels: Respective values for hemoglobin (Hb), reticulocytes, platelets (PLTs), total white blood cell (WBC) count, bilirubin, lactate dehydrogenase (LDH), and creatinine levels...