289 research outputs found
Race and Home Ownership from the End of the Civil War to the Present
We present new estimates of home ownership for black and white households from 1870 to 2007. Black ownership increased by 46 percentage points, whereas white ownership increased by 20 points. Remarkably, 25 of the 26 point narrowing occurred between 1870 and 1910. Part of this early convergence is accounted for by falling white ownership due to movement out of agriculture, but most is accounted for by post-emancipation gains among blacks. After 1910, white and black households increased ownership, but the racial gap barely changed. We discuss the influence of residential segregation, public policy, and permanent income on the ownership gap.
Duality violations and spectral sum rules
We study the issue of duality violations in the VV-AA vacuum polarization
function in the chiral limit. This is done with the help of a model with an
expansion in inverse powers of the number of colors, Nc, allowing us to
consider resonances with a finite width. Due to these duality violations, the
Operator Product Expansion (OPE) and the moments of the spectral function (e.g.
the Weinberg sum rules) do not match at finite momentum, and we analyze this
difference in detail. We also perform a comparative study of many of the
different methods proposed in the literature for the extraction of the OPE
parameters and find that, when applied to our model, they all fare quite
similarly. In fact, the model strongly suggests that a significant improvement
in precision can only be expected after duality violations are included. To
this end, we propose a method to parameterize these duality violations. The
method works quite well for the model, and we hope that it may also be useful
in future determinations of OPE parameters in QCD.Comment: 29 pages, 9 figures, LateX file. Small changes to match journal
versio
A-MAPS: Augmented MAPS Dataset with Rhythm and Key Annotations
The MAPS dataset is the most used benchmark dataset for automatic music transcription (AMT). We propose here an updated version of the ground truth, containing precise beat, time signature, and key signature annotations
Report of the committee appointed to inquire into the expediency of allowing an additional judge to the Mississippi Territory, to reside in Madison County
https://egrove.olemiss.edu/msterrdocs/1005/thumbnail.jp
Cognitive networks: brains, internet, and civilizations
In this short essay, we discuss some basic features of cognitive activity at
several different space-time scales: from neural networks in the brain to
civilizations. One motivation for such comparative study is its heuristic
value. Attempts to better understand the functioning of "wetware" involved in
cognitive activities of central nervous system by comparing it with a computing
device have a long tradition. We suggest that comparison with Internet might be
more adequate. We briefly touch upon such subjects as encoding, compression,
and Saussurean trichotomy langue/langage/parole in various environments.Comment: 16 page
Report of the Committee on the Public Lands, on the petition of Samuel C. Young. : March 17th, 1810. Read, and referred to a committee of the whole House, on Friday next
https://egrove.olemiss.edu/msterrdocs/1006/thumbnail.jp
Report of the Committee on public lands, to whom was referred, on the twenty fifth ultimo, the petition of Richard S. Bryan and George Brewer, sen. of Washington county, in the Mississippi territory : March 18, 1806. Read, and ordered to lie on the table
https://egrove.olemiss.edu/msterrdocs/1004/thumbnail.jp
Report of the Committee on public lands, to whom was referred, on the twenty-fifth ultimo, the petition of Richard Sparks, of the Mississippi territory : March 18, 1806. Read, and ordered to lie on the table
https://egrove.olemiss.edu/msterrdocs/1003/thumbnail.jp
Discontinuation of rLH two days before hCG may increase the number of oocytes retrieved in IVF
<p>Abstract</p> <p>Background</p> <p>Administration of recombinant luteinizing hormone (rLH) in controlled ovarian hyperstimulation may benefit a subpopulation of patients. However, late follicular phase administration of high doses of rLH may also reduce the size of the follicular cohort and promote monofollicular development.</p> <p>Methods</p> <p>To determine if rLH in late follicular development had a negative impact on follicular growth and oocyte yield, IVF patients in our practice who received rFSH and rLH for the entire stimulation were retrospectively compared with those that had the rLH discontinued at least two days prior to hCG trigger.</p> <p>Results</p> <p>The two groups had similar baseline characteristics before stimulation with respect to age, FSH level and antral follicle count. However, the group which had the rLH discontinued at least two days prior to their hCG shot, had a significantly higher number of oocytes retrieved, including a higher number of MII oocytes and number of 2PN embryos.</p> <p>Conclusions</p> <p>When using rLH for controlled ovarian hyperstimulation, administering it from the start of stimulation and stopping it in the late follicular phase, at least two days prior to hCG trigger, may increase oocyte and embryo yield.</p
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