221 research outputs found
At Risk: The Bay Area Greenbelt
In 2006, Greenbelt Alliance, the Bay Area's land conservation and urban planning organization, published the newest edition of its landmark study on the state of the region's landscapes. The report found that if current development patterns continue, roughly one out of every 10 acres in the entire Bay Area could be paved over in the next thirty years. Today, there are 401,500 acres of greenbelt lands at risk of sprawl development. That includes 125,200 acres at risk within the next 10 years, classified as high-risk land, and 276,200 acres at risk within the next 10 to 30 years, classified as medium-risk land. Around the region, the places at highest risk -- the sprawl hot spots -- include the I-80 corridor in Solano County, the eastern cities in Contra Costa County, Coyote Valley in southern Santa Clara County, the Tri-Valley area of Alameda and Contra Costa Counties, and areas along Highway 101 through Sonoma County
Divine Art / Infernal Machine: Western Views of Printing Surveyed
The University of Pennsylvania Libraries A.S.W. Rosenbach Lectures in Bibliography for 2010: Monday, March 22, 2010: First Impressions Welcome: David McKnight (00:01-06:00); Introduction: Peter Stallybrass (06:00-13:02); Lecture: Elizabeth L. Eisenstein (13:02-59:57); Question and Answer: (59:57-01:12:33)Tuesday, March 23, 2010: Eighteenth-Century Attitudes Introduction: David McKnight, Libby Kislak (00:01-07:02); Lecture: Elizabeth L. Eisenstein (07:02-52:57); Question and Answer: (52:57-01:07:31)Thursday, March 25, 2010: From Steam Press to Cyberspace Welcome: David McKnight (00:01-04:32); Introduction: Roger Chartier (04:32-11:33); Lecture: Elizabeth L. Eisenstein (11:33-59:05); Question and Answer: (59:20-01:09:22) The 2010 Rosenbach Fellow, Elizabeth L. Eisenstein, is a graduate of Vassar College and Harvard University and is Professor Emerita of History at the University of Michigan. Her classic work The Printing Press as an Agent of Change: Communications and Cultural Transformations in Early Modern Europe (1979) is available in many formats and languages, and her other works include Grub Street Abroad: Aspects of the French Cosmopolitan Press from the Age of Louis XIV to the French Revolution (1992). Professor Eisenstein received the Scholarly Distinction award from the American Historical Association in 2002. An expanded version of these lectures has been published as Divine Art, Infernal Machine: The Reception of Printing in the West from First Impressions to the Sense of an Ending (University of Pennsylvania Press, 2011).To download a podcast of each lecture, choose one of the additional files below. To view the event announcement, select the Download button at upper right
Quantitative Molecular Endoscope for Real-‐Time Optical Imaging of Colorectal Cancer
http://deepblue.lib.umich.edu/bitstream/2027.42/96180/1/me450f12project3_report.pd
Dialect-robust Evaluation of Generated Text
Evaluation metrics that are not robust to dialect variation make it
impossible to tell how well systems perform for many groups of users, and can
even penalize systems for producing text in lower-resource dialects. However,
currently, there exists no way to quantify how metrics respond to change in the
dialect of a generated utterance. We thus formalize dialect robustness and
dialect awareness as goals for NLG evaluation metrics. We introduce a suite of
methods and corresponding statistical tests one can use to assess metrics in
light of the two goals. Applying the suite to current state-of-the-art metrics,
we demonstrate that they are not dialect-robust and that semantic perturbations
frequently lead to smaller decreases in a metric than the introduction of
dialect features. As a first step to overcome this limitation, we propose a
training schema, NANO, which introduces regional and language information to
the pretraining process of a metric. We demonstrate that NANO provides a
size-efficient way for models to improve the dialect robustness while
simultaneously improving their performance on the standard metric benchmark
The Sloan Bright Arcs Survey : Six Strongly Lensed Galaxies at z=0.4-1.4
We present new results of our program to systematically search for strongly
lensed galaxies in the Sloan Digital Sky Survey (SDSS) imaging data. In this
study six strong lens systems are presented which we have confirmed with
follow-up spectroscopy and imaging using the 3.5m telescope at the Apache Point
Observatory. Preliminary mass models indicate that the lenses are group-scale
systems with velocity dispersions ranging from 466-878 km s^{-1} at z=0.17-0.45
which are strongly lensing source galaxies at z=0.4-1.4. Galaxy groups are a
relatively new mass scale just beginning to be probed with strong lensing. Our
sample of lenses roughly doubles the confirmed number of group-scale lenses in
the SDSS and complements ongoing strong lens searches in other imaging surveys
such as the CFHTLS (Cabanac et al 2007). As our arcs were discovered in the
SDSS imaging data they are all bright (), making them ideally
suited for detailed follow-up studies.Comment: 13 pages, 3 figures, submitted to ApJL, the Sloan Bright Arcs page is
located here: http://home.fnal.gov/~kubo/brightarcs.htm
The Sloan Bright Arcs Survey: Four Strongly Lensed Galaxies with Redshift >2
We report the discovery of four very bright, strongly-lensed galaxies found
via systematic searches for arcs in Sloan Digital Sky Survey Data Release 5 and
6. These were followed-up with spectroscopy and imaging data from the
Astrophysical Research Consortium 3.5m telescope at Apache Point Observatory
and found to have redshift . With isophotal magnitudes
and 3\arcsec-diameter magnitudes , these systems are some of
the brightest and highest surface brightness lensed galaxies known in this
redshift range. In addition to the magnitudes and redshifts, we present
estimates of the Einstein radii, which range from 5.0 \arcsec to 12.7
\arcsec, and use those to derive the enclosed masses of the lensing galaxies
Observations and properties of candidate high frequency GPS radio sources in the AT20G survey
We used the Australia Telescope Compact Array (ATCA) to obtain 40 GHz and 95
GHz observations of a number of sources that were selected from the Australia
Telescope Compact Array 20 GHz (AT20G) survey . The aim of the observations was
to improve the spectral coverage for sources with spectral peaks near 20 GHz or
inverted (rising) radio spectra between 8.6 GHz and 20 GHz. We present the
radio observations of a sample of 21 such sources along with optical spectra
taken from the ANU Siding Spring Observatory 2.3m telescope and the ESO-New
Technology Telescope (NTT). We find that as a group the sources show the same
level of variability as typical GPS sources, and that of the 21 candidate GPS
sources roughly 60% appear to be genuinely young radio galaxies. Three of the
21 sources studied show evidence of being restarted radio galaxies. If these
numbers are indicative of the larger population of AT20G radio sources then as
many as 400 genuine GPS sources could be contained within the AT20G with up to
25% of them being restarted radio galaxies.Comment: 21 pages, 24 figures, Table 1 truncated at 11 column
The NICMOS Ultra Deep Field: Observations, Data Reduction, and Galaxy Photometry
This paper describes the observations and data reduction techniques for the
version 2.0 images and catalog of the NICMOS Ultra Deep Field Treasury program.
All sources discussed in this paper are based on detections in the combined
NICMOS F110W and F160W bands only. The NICMOS images are drizzled to 0.09 arc
second pixels and aligned to the ACS UDF F850LP image which was rebinned to the
same pixel scale. These form the NICMOS version 2.0 UDF images. The catalog
sources are chosen with a conservative detection limit to avoid the inclusion
of numerous spurious sources. The catalog contains 1293 objects in the 144 x
144 arc sececonds NICMOS subfield of the UDF. The 5 sigma signal to noise level
is an average 0.6 arc second diameter aperture AB magnitude of ~27.7 at 1.1 and
1.6 microns. The catalog sources, listed in order of right ascension, satisfy a
minimum signal to noise criterion of 1.4 sigma in at least 7 contiguous pixels
of the combined F110W and F160W imageComment: Accepted for publication in the Astronomical Journal. 33 Pages, 6
Figure
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Inflation and Dark Energy from spectroscopy at z > 2
The expansion of the Universe is understood to have accelerated during two
epochs: in its very first moments during a period of Inflation and much more
recently, at z < 1, when Dark Energy is hypothesized to drive cosmic
acceleration. The undiscovered mechanisms behind these two epochs represent
some of the most important open problems in fundamental physics. The large
cosmological volume at 2 < z < 5, together with the ability to efficiently
target high- galaxies with known techniques, enables large gains in the
study of Inflation and Dark Energy. A future spectroscopic survey can test the
Gaussianity of the initial conditions up to a factor of ~50 better than our
current bounds, crossing the crucial theoretical threshold of
of order unity that separates single field and
multi-field models. Simultaneously, it can measure the fraction of Dark Energy
at the percent level up to , thus serving as an unprecedented test of
the standard model and opening up a tremendous discovery space
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