437 research outputs found
Spatially Resolved Stellar Populations of Eight GOODS-South AGN at z~1
We present a pilot study of the stellar populations of 8 AGN hosts at z~1 and
compare to (1) lower redshift samples and (2) a sample of nonactive galaxies of
similar redshift. We utilize K' images in the GOODS South field obtained with
the laser guide star adaptive optics (LGSAO) system at Keck Observatory. We
combine this K' data with B, V, i, and z imaging from the ACS on HST to give
multi-color photometry at a matched spatial resolution better than 100 mas in
all bands. The hosts harbor AGN as inferred from their high X-ray luminosities
(L_X > 10^42 ergs/s) or mid-IR colors. We find a correlation between the
presence of younger stellar populations and the strength of the AGN, as
measured with [OIII] line luminosity or X-ray (2-10 keV) luminosity. This
finding is consistent with similar studies at lower redshift. Of the three Type
II galaxies, two are disk galaxies and one is of irregular type, while in the
Type I sample there only one disk-like source and four sources with smooth,
elliptical/spheroidal morphologies. In addition, the mid-IR SEDs of the strong
Type II AGN indicate that they are excited to LIRG (Luminous InfraRed Galaxy)
status via galactic starbursting, while the strong Type I AGN are excited to
LIRG status via hot dust surrounding the central AGN. This supports the notion
that the obscured nature of Type II AGN at z~1 is connected with global
starbursting and that they may be extincted by kpc-scale dusty features that
are byproducts of this starbursting.Comment: 56 pages, 39 figures, accepted to A
A medium deep Chandra and Subaru survey of the 13hr XMM/ROSAT deep survey area
We present the results of a Chandra ACIS-I survey of a high latitude region
at 13h +38 which was earlier observed with ROSAT (McHardy et al. 1998) and
which has recently been observed by XMM-Newton for 200ksec. XMM-Newton will
provide good quality X-ray spectra for over 200 sources with fluxes around the
knee of the logN/logS, which are responsible for the bulk of the X-ray
background (XRB). The main aim of the Chandra observations is to provide
arcsecond, or better, positions, and hence reliable identifications, for the
XMM-Newton sources. The ACIS-I observations were arranged in a mosaic of four
30ksec pointings, covering almost all of the 15' radius XMM-Newton/ROSAT field.
We detect 214 Chandra sources above 5 sigma significance, to a limiting flux of
\~1.3e-15 erg/cm2/s (0.5-7 keV). Optical counterparts are derived from a Subaru
SuprimeCam image reaching to R~27. The very large majority of the Chandra
sources have an optical counterpart, with the distribution peaking at 23<R<24,
although 14 have no counterpart to R=27. The fraction of X-ray sources with no
identification brighter than R=27 is similar to that found in deeper Chandra
surveys. The majority of the identifications are with galaxies. As found in
other Chandra surveys, there is a very wide range of optical magnitude for
given X-ray flux, implying a range of emission mechanisms, and many sources
have high L_X/L_opt ratios, implying absorption at moderate redshift.
Comparison with the earlier ROSAT survey shows that the accuracy of the ROSAT
positions agrees very well with the predictions from simulations in McHardy et
al. (1998) and that the large majority of the identifications were correct
(abridged).Comment: 22 pages, MNRAS in press. A full resolution version is available at
http://www.astro.soton.ac.uk/~kfg/catalogue.ps.g
The Three-Point Correlation Function of Luminous Red Galaxies in the Sloan Digital Sky Survey
We present measurements of the redshift-space three-point correlation
function of 50,967 Luminous Red Galaxies (LRGs) from Data Release 3 (DR3) of
the Sloan Digital Sky Survey (SDSS). We have studied the shape dependence of
the reduced three-point correlation function (Qz(s,q,theta)) on three different
scales, s=4, 7 and 10 h-1 Mpc, and over the range of 1 < q < 3 and 0 < theta <
180. On small scales (s=4 h-1 Mpc), Qz is nearly constant, with little change
as a function of q and theta. However, there is evidence for a shallow U-shaped
behaviour (with theta) which is expected from theoretical modeling of Qz . On
larger scales (s=7 and 10 h-1 Mpc), the U-shaped anisotropy in Qz (with theta)
is more clearly detected. We compare this shape-dependence in Qz(s,q,theta)
with that seen in mock galaxy catalogues which were generated by populating the
dark matter halos in large N-body simulations with mock galaxies using various
Halo Occupation Distributions (HOD). We find that the combination of the
observed number density of LRGs, the (redshift-space) two-point correlation
function and Qz provides a strong constraint on the allowed HOD parameters
(M_min, M_1, alpha) and breaks key degeneracies between these parameters. For
example, our observed Qz disfavors mock catalogues that overpopulate massive
dark matter halos with many LRG satellites. We also estimate the linear bias of
LRGs to be b=1.87+/-0.07 in excellent agreement with other measurements.Comment: 14 pages. Accepted for publication to the MNRAS. Data accompanying
paper can be found at http://www.dsg.port.ac.uk/~nicholb/3pt/kulkarni
Telehealth and Mobile Health Applied To IntegratedBehavioral Care: OpportunitiesFor Progress In New Hampshire
This paper is an accompanying document to a webinar delivered on May 16, 2017, for the New Hampshire Citizens Health Initiative (Initiative). As integrated behavioral health efforts in New Hampshire gain traction, clinicians, administrators, payers, and policy makers are looking for additional efficiencies in delivering high quality healthcare. Telehealth and mobile health (mHealth) have the opportunity to help achieve this while delivering a robust, empowered patient experience.
The promise of video-based technology was first made in 1964 as Bell Telephone shared its PicturephoneÂź with the world. This was the first device with audio and video delivered in an integrated technology platform. Fast-forward to today with Skype, FaceTime, and webinar tools being ubiquitous in our personal and business lives, but often slow to be adopted in the delivery of medicine.
Combining technology-savvy consumers with New Hampshireâs high rate of electronic health record (EHR) technology adoption, a fairly robust telecommunications infrastructure, and a predominately rural setting, there is strong foundation for telehealth and mHealth expansion in New Hampshireâs integrated health continuum
Integrating Behavioral Health & Primary Care in New Hampshire: A Path Forward to Sustainable Practice & Payment Transformation
New Hampshire residents face challenges with behavioral and physical health conditions and the interplay between them. National studies show the costs and the burden of illness from behavioral health conditions and co-occurring chronic health conditions that are not adequately treated in either primary care or behavioral health settings. Bringing primary health and behavioral health care together in integrated care settings can improve outcomes for both behavioral and physical health conditions. Primary care integrated behavioral health works in conjunction with specialty behavioral health providers, expanding capacity, improving access, and jointly managing the care of patients with higher levels of acuity
In its work to improve the health of NH residents and create effective and cost-effective systems of care, the NH Citizens Health Initiative (Initiative) created the NH Behavioral Health Integration Learning Collaborative (BHI Learning Collaborative) in November of 2015, as a project of its Accountable Care Learning Network (NHACLN). Bringing together more than 60 organizations, including providers of all types and sizes, all of the stateâs community mental health centers, all of the major private and public insurers, and government and other stakeholders, the BHI Learning Collaborative built on earlier work of a NHACLN Workgroup focused on improving care for depression and co-occurring chronic illness. The BHI Learning Collaborative design is based on the core NHACLN philosophy of âshared data and shared learningâ and the importance of transparency and open conversation across all stakeholder groups.
The first year of the BHI Learning Collaborative programming included shared learning on evidence-based practice for integrated behavioral health in primary care, shared data from the NH Comprehensive Healthcare Information System (NHCHIS), and work to develop sustainable payment models to replace inadequate Fee-for-Service (FFS) revenues. Provider members joined either a Project Implementation Track working on quality improvement projects to improve their levels of integration or a Listen and Learn Track for those just learning about Behavioral Health Integration (BHI). Providers in the Project Implementation Track completed a self-assessment of levels of BHI in their practice settings and committed to submit EHR-based clinical process and outcomes data to track performance on specified measures. All providers received access to unblinded NHACLN Primary Care and Behavioral Health attributed claims data from the NHCHIS for provider organizations in the NH BHI Learning Collaborative.
Following up on prior work focused on developing a sustainable model for integrating care for depression and co-occurring chronic illness in primary care settings, the BHI Learning Collaborative engaged consulting experts and participants in understanding challenges in Health Information Technology and Exchange (HIT/HIE), privacy and confidentiality, and workforce adequacy. The BHI Learning Collaborative identified a sustainable payment model for integrated care of depression in primary care. In the process of vetting the payment model, the BHI Learning Collaborative also identified and explored challenges in payment for Substance Use Disorder Screening, Brief Intervention and Referral to Treatment (SBIRT). New Hampshireâs residents will benefit from a health care system where primary care and behavioral health are integrated to support the care of the whole person. New Hampshireâs current opiate epidemic accentuates the need for better screening for behavioral health issues, prevention, and treatment referral integrated into primary care. New Hampshire providers and payers are poised to move towards greater integration of behavioral health and primary care and the Initiative looks forward to continuing to support progress in supporting a path to sustainable integrated behavioral and primary care
Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: 100,000 z<3 Quasars from Data Release One
We present a catalog of 100,563 unresolved, UV-excess (UVX) quasar candidates
to g=21 from 2099 deg^2 of the Sloan Digital Sky Survey (SDSS) Data Release One
(DR1) imaging data. Existing spectra of 22,737 sources reveals that 22,191
(97.6%) are quasars; accounting for the magnitude dependence of this
efficiency, we estimate that 95,502 (95.0%) of the objects in the catalog are
quasars. Such a high efficiency is unprecedented in broad-band surveys of
quasars. This ``proof-of-concept'' sample is designed to be maximally
efficient, but still has 94.7% completeness to unresolved, g<~19.5, UVX quasars
from the DR1 quasar catalog. This efficient and complete selection is the
result of our application of a probability density type analysis to training
sets that describe the 4-D color distribution of stars and spectroscopically
confirmed quasars in the SDSS. Specifically, we use a non-parametric Bayesian
classification, based on kernel density estimation, to parameterize the color
distribution of astronomical sources -- allowing for fast and robust
classification. We further supplement the catalog by providing photometric
redshifts and matches to FIRST/VLA, ROSAT, and USNO-B sources. Future work
needed to extend the this selection algorithm to larger redshifts, fainter
magnitudes, and resolved sources is discussed. Finally, we examine some science
applications of the catalog, particularly a tentative quasar number counts
distribution covering the largest range in magnitude (14.2<g<21.0) ever made
within the framework of a single quasar survey.Comment: 35 pages, 11 figures (3 color), 2 tables, accepted by ApJS; higher
resolution paper and ASCII version of catalog available at
http://sdss.ncsa.uiuc.edu/qso/nbckde
XMM-Newton 13H Deep field - I. X-ray sources
We present the results of a deep X-ray survey conducted with XMM-Newton,
centred on the UK ROSAT 13H deep field area. This region covers 0.18 deg^2 and
is the first of two areas covered with XMM-Newton as part of an extensive
multi-wavelength survey designed to study the nature and evolution of the faint
X-ray source population. We have produced detailed Monte-Carlo simulations to
obtain a quantitative characterisation of the source detection procedure and to
assess the reliability of the resultant sourcelist. We use the simulations to
establish a likelihood threshold above which we expect less than 7 (3%) of our
sources to be spurious. We present the final catalogue of 225 sources. Within
the central 9 arcmin, 68 per cent of source positions are accurate to 2 arcsec,
making optical follow-up relatively straightforward. We construct the N(>S)
relation in four energy bands: 0.2-0.5 keV, 0.5-2 keV, 2-5 keV and 5-10 keV. In
all but our highest energy band we find that the source counts can be
represented by a double powerlaw with a bright end slope consistent with the
Euclidean case and a break around 10^-14 cgs. Below this flux the counts
exhibit a flattening. Our source counts reach densities of 700, 1300, 900 and
300 deg^-2 at fluxes of 4.1x10^-16, 4.5x10^-16, 1.1x10^-15 and 5.3x10^-15 cgs
in the 0.2-0.5, 0.5-2, 2-5 and 5-10 keV energy bands respectively. We have
compared our source counts with those in the two Chandra deep fields and
Lockman hole and find our source counts to be amongst the highest of these
fields in all energy bands. We resolve >51% (>50%) of the X-ray background
emission in the 1-2 keV (2-5 keV) energy bands.Comment: 27 pages, 18 figures, MNRAS accepte
The Student Movement Volume 107 Issue 20: Andrews Students Spring Back from Break: Six More Weeks to Go
HUMANS
Meeting Dr. McCree, Interviewed by: Grace No
Interview with Dr. Luxton: Saying Goodbye, Interviewed by: Grace No
Spring Break Renovations & Relaxation, Caryn Cruz
ARTS & ENTERTAINMENT
Currently: The Last of Us, Solana Campbell
Spring Break Spotlight, Amelia Stefanescu
What Happened to Wang in the Costco Bathroom?, Nora Martin
NEWS
Experiences Living in Lamson Hall, Abigail Kim
Time is Ticking for TikTok, Brendan Oh
WEAAU x CFE Service Sabbath, Terika Williams
IDEAS
Inequality Drags on in Tennessee, Alexander J. Hess
On Value: True Crime and the Search for Meaning, Nora Martin
When Winds Change: The Legacy of President Luxton, Bella Hamann
PULSE
A Trip to the Museo , Chris Ngugi
AUSA Senates Holds Bon Appétit Forum, Neesa Richards
Speaking Up With Women Press Release, Nicholas C. Gunn
LAST WORD
A Week of Rest and Relaxation ... Almost, Grace Nohttps://digitalcommons.andrews.edu/sm-107/1019/thumbnail.jp
Ir-Man: An Information Retrieval Framework for Marine Animal Necropsy Analysis
This paper proposes Ir-Man (Information Retrieval for Marine Animal Necropsies), a framework for retrieving discrete information from marine mammal post-mortem reports for statistical analysis. When a marine mammal is reported dead after stranding in Scotland, the carcass is examined by the Scottish Marine Animal Strandings Scheme (SMASS) to establish the circumstances of the animal's death. This involves the creation of a 'post-mortem' (or necropsy) report , which systematically describes the body. These semi-structured reports record lesions (damage or abnormalities to anatomical regions) as well as other observations. Observations embedded within these texts are used to determine cause of death. While a cause of death is recorded separately, many other descriptions may be of pathological and epidemiological significance when aggregated and analysed collectively. As manual extraction of these descriptions is costly, time consuming and at times erroneous, there is a need for an automated information retrieval mechanism which is a non-trivial task given the wide variety of possible descriptions, pathologies and species. The Ir-Man framework consists of a new ontology, a lexicon of observations and anatomical terms and an entity relation engine for information retrieval and statistics generation from a pool of necropsy reports. We demonstrate the effectiveness of our framework by creating a rule-based binary classifier for identifying bottlenose dolphin attacks (BDA) in harbour porpoise gross pathology reports and achieved an accuracy of 83.4%
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