7,558 research outputs found
The Large-Scale Velocity Field
I summarize both observational and theoretical developments in the last few
years in measuring and understanding the large-scale velocity field of
galaxies, with special attention to the bulk flow, or average peculiar
velocity, within spheres centered on the Local Group.Comment: 12 pages standard Latex (w/figures). Uses psfig.tex, included. To be
published in ``Critical Dialogues in Cosmology'' ed. Turok. Uses AAS macros,
postscript also available at
http://www.astro.princeton.edu/~library/preprints/pop684.ps.g
Stability of Quadratic Projection Methods
In this paper we discuss the stability of an alternative pollution-free
procedure for computing spectra. The main difference with the Galerkin method
lies in the fact that it gives rise to a weak approximate problem which is
quadratic in the spectral parameter, instead of linear. Previous accounts on
this new procedure can be found in Levitin and Shargorodsky (2002)
[math.SP/0212087] and Boulton (2006) [math.SP/0503126].Comment: 19 pages, 4 figures. In this updated version we have made a small
number of minor correction
Manufacturing sector critical in Midwest recovery
Manufactures ; Economic conditions - Middle West
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