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A Comprehensive Analysis on the Healthcare Systems in Latin America
This comprehensive report summarizes and analyzes the current state of healthcare in Latin America, specifically in the countries of Mexico, Brazil, the Northern Triangle (El Salvador, Guatemala, and Honduras), the Andean Region (Ecuador, Peru, and Bolivia) and the Rioplatense Region (Uruguay, and Argentina). Each country's healthcare system is examined in depth, in terms of health infrastructure, the healthcare providing industry, and the effects of healthcare on the countries' respective populations.Mosser, Michael W.International Relations and Global Studie
The DELTA MONSTER: An RPV designed to investigate the aerodynamics of a delta wing platform
The mission requirements for the performance of aerodynamic tests on a delta wind planform posed some problems, these include aerodynamic interference; structural support; data acquisition and transmission instrumentation; aircraft stability and control; and propulsion implementation. To eliminate the problems of wall interference, free stream turbulence, and the difficulty of achieving dynamic similarity between the test and actual flight aircraft that are associated with aerodynamic testing in wind tunnels, the concept of the remotely piloted vehicle which can perform a basic aerodynamic study on a delta wing was the main objective for the Green Mission - the Delta Monster. The basic aerodynamic studies were performed on a delta wing with a sweep angle greater than 45 degrees. These tests were performed at various angles of attack and Reynolds numbers. The delta wing was instrumented to determine the primary leading edge vortex formation and location, using pressure measurements and/or flow visualization. A data acquisition system was provided to collect all necessary data
The Chandra Deep Field-North Survey. XIV. X-ray detected Obscured AGNs and Starburst Galaxies in the Bright Submm Source Population
We provide X-ray constraints and perform the first X-ray spectral analyses
for bright (f_850>=5mJy; S/N>=4) SCUBA sources in an 8.4'x8.4' area of the 2 Ms
Chandra Deep Field-North survey containing the Hubble Deep Field-North. X-ray
emission is detected from 7 of the 10 bright submm sources in this region,
corresponding to an X-ray detected submm source density of ~360 deg^-2 (>~36%
of the bright submm source population). Two of the X-ray detected sources have
nearby (within 3") X-ray companions, suggesting merging/interacting sources or
gravitational lensing effects, and 3 lie within the approximate extent of a
proto-cluster candidate. Five of the X-ray detected sources have flat X-ray
spectral slopes, suggesting obscured AGN activity. X-ray spectral analyses
suggest that one of these AGNs may be a Compton-thick source; of the other 4
AGNs, 3 appear to be Compton-thin sources and one has poor constraints. The
rest-frame unabsorbed X-ray luminosities of these AGNs are more consistent with
those of Seyfert galaxies than QSOs. Thus, the low X-ray detection rate of
bright submm sources by moderately deep X-ray surveys appears to be due to the
relatively low luminosities of the AGNs rather than Compton-thick absorption. A
comparison of these sources to the well-studied heavily obscured AGN NGC6240
shows that the average AGN contribution is negligible at submm wavelengths. The
X-ray properties of the other 2 X-ray detected sources are consistent with
those expected from luminous star formation; however, we cannot rule out the
possibility that low-luminosity AGNs are present. The 3 X-ray undetected
sources appear to lie at high redshift (z>4) and could be either AGNs or
starbust galaxies.Comment: AJ in press (February 2003), 16 pages, includes emulateapj5.st
X-ray spectral properties of Seyfert galaxies and the unification scheme
Aims: The unification scheme of Seyfert galaxies predicts that the observed
differences between type 1 and type 2 Seyfert galaxies are solely due to the
differing orientations of the toroidal-shaped obscuring material around AGN.
The observed X-ray spectra of Seyfert type 2s compared to type 1s are expected
to be affected by higher absorbing column density due to the edge-on view of
the obscuring torus. We study the 0.5 - 10 keV X-ray spectral properties of
Seyfert type 1s and type 2s with the aim to test the predictions of Seyfert
unification scheme in the X-ray regime. Methods: We use an optically selected
Seyfert sample in which type 1s and type 2s have matched distributions in the
orientation independent parameters of AGN and host galaxy. Results: The 0.5 -
10 keV XMM-Newton pn X-ray spectra of Seyfert galaxies are in general best
fitted with a model consists of an absorbed power-law, a narrow Gaussian fitted
to the Fe K{\alpha} emission line and an often seen soft excess component
characterized by either a thermal plasma model with temperature kT \sim 0.1 -
1.0 keV and/or a steep power-law. The 2.0 - 10 keV hard X-ray continuum
emission in several Seyfert type 2s is reflection dominated and suggests the
Compton-thick obscuration. Results on the statistical comparison of the
distributions of the observed X-ray luminosities in the soft (0.5 - 2.0 keV)
and hard (2.0 - 10.0 keV) bands, the X-ray absorbing column densities, the
equivalent widths of Fe K{\alpha} line and the flux ratios of hard X-ray to
[OIII] {\lambda}5007{\AA} for the two Seyfert subtypes are consistent with the
obscuration and orientation based unification scheme.Comment: 15 pages, 3 figures, 6 tables, accepted for publication in A&
The XMM deep survey in the CDF-S II. a 9-20 keV selection of heavily obscured active galaxies at z>1.7
We present results on a search of heavily obscured active galaxies z>1.7
using the rest-frame 9-20 keV excess for X-ray sources detected in the deep
XMM-CDFS survey. Out of 176 sources selected with the conservative detection
criteria (>8 sigma) in the first source catalogue of Ranalli et al., 46 objects
lie in the redshift range of interest with the median redshift z~2.5. Their
typical rest-frame 10-20 keV luminosity is 1e+44 erg/s, as observed. Among
optically faint objects that lack spectroscopic redshift, four were found to be
strongly absorbed X-ray sources, and the enhanced Fe K emission or absorption
features in their X-ray spectra were used to obtain X-ray spectroscopic
redshifts. Using the X-ray colour-colour diagram based on the rest-frame 3-5
keV, 5-9 keV, and 9-20 keV bands, seven objects were selected for their 9-20
keV excess and were found to be strongly absorbed X-ray sources with column
density of nH > 0.6e+24 cm-2, including two possible Compton thick sources.
While they are emitting at quasar luminosity, ~3/4 of the sample objects are
found to be absorbed by nH > 1e+22 cm-2. A comparison with local AGN at the
matched luminosity suggests an increasing trend of the absorbed source fraction
for high-luminosity AGN towards high redshifts.Comment: 9 pages, 7 figures. Accepted for publication in A&
Comparing Local Starbursts to High-Redshift Galaxies: A Search for Lyman-Break Analogs
We compare the restframe far-ultraviolet (FUV) morphologies of 8 nearby interacting and starburst galaxies (Arp 269, M 82, Mrk 08, NGC 0520, NGC 1068, NGC 3079, NGC 3310, NGC 7673) with 54 galaxies at z approx.1.5 and 46 galaxies at z approx.4 in the Great Observatories Origins Deep Survey (GOODS) images taken with the Advanced Camera for Surveys onboard the Hubble Space Telescope. We calculate the Gini coefficient (G), the second order moment of 20% of the brightest pixels (M20), and the S ersic index (n). We find that 20% (11/54) of z approx.1.5 and 37% (17/46) of z approx.4 galaxies are bulge-like, using G and M20. We also find approx.70% of the z approx.1.5 and z approx.4 galaxies have exponential disks with n > 0.8. The 2D profile combined with the nonparametric methods provides more detail, concerning the nature of disturbed systems, such as merger and post-merger types. We also provide qualitative descriptions of each galaxy system and at each redshift. We conclude that Mrk 08, NGC 3079, and NGC 7673 have similar morphologies as the starburst FUV restframe galaxies and Lyman-break galaxies at z approx.1.5 and 4, and determine that they are Lyman-break analogs
What’s The Beef? Current Trends of the Florida Beef Cattle Industry as Perceived by Florida Beef Cattle Industry Leaders
Agriculture plays a vital role in Florida’s economy, as it is the second largest industry behind tourism. Additionally, Florida is a leading cow-calf production state in the United States which is impacted by numerous factors internal and external to the industry itself. The Theory of Reasoned Action was used to explore current trends of the Florida beef cattle industry as perceived by Florida cattle industry leaders. Thirteen themes emerged from the data, such as environmental protection and alternative proteins. Florida ranchers need support from government entities to continue participation in conservation, education, and improvement of the cattle industry in Florida. Recommendations are for producers to advocate for both their own farms and the state by sharing more of their ‘story’ with consumers and government entities
Investigating the complex X-ray spectrum of a broad-line 2MASS red quasar: XMM-Newton observation of FTM 0830+3759
We report results from a 50 ks XMM-Newton observation of the dust-reddened
broad-line quasar FTM 0830+3759 (z=0.413) selected from the FIRST/2MASS Red
Quasar survey. For this AGN, a very short 9 ks Chandra exposure had suggested a
feature-rich X-ray spectrum and HST images revealed a very disturbed host
galaxy morphology. Contrary to classical, optically-selected quasars, the X-ray
properties of red (i.e. with J-Ks> 1.7 and R-Ks> 4) broad line quasars are
still quite unexplored, although there is a growing consensus that, due to
moderate obscuration, these objects can offer a unique view of spectral
components typically swamped by the AGN light in normal, blue quasars. The
XMM-Newton observation discussed here has definitely confirmed the complexity
of the X-ray spectrum revealing the presence of a cold (or mildly-ionized)
absorber with Nh ~10^{22} cm^-2 along the line of sight to the nucleus and a
Compton reflection component accompanied by an intense Fe K emission line in
this quasar with a Lum(2-10) ~5 x 10^{44} erg/s. A soft-excess component is
also required by the data. The match between the column density derived by our
spectral analysis and that expected on the basis of reddening due to the dust
suggests the possibility that both absorptions occur in the same medium. FTM
0830+3759 is characterized by an extinction/absorption-corrected
X-ray-to-optical flux ratio alphaox = -2.3, that is steeper than expected on
the basis of its UV luminosity. These findings indicate that the X-ray
properties of FTM 0830+3759 differs from those typically observed for
optically-selected broad line quasars with comparable hard X-ray luminosity.Comment: Accepted for publication in Ap
Booklet of Selected Theses from the MA in Criminology, MA in Law, MA in Child, Family and Community Studies, and the International Masters in Early Childhood Education, 2010-2012
This booklet highlights and celebrates the research work of graduates from taught Masters programmes in the School of Social Sciences and Law:
• the MA in Criminology
• the MA in Law
• the MA in Child, Family and Community Studies
• the International Masters in Early Childhood Education, co-delivered with Oslo and Akershus University College of Applied Sciences (Norway) and the University of Malta (Malta).
The MA in Criminology and the MA in Law commenced in 2006 and the MA in Child, Family and Community Studies commenced in 2007. Each has quickly become established in its field as a popular, exciting and challenging course of study. The International Masters in Early Childhood Education (funded by the European Union’s Erasmus Mundus Programme) has attracted student cohorts from all over the world and has provided a rich learning environment for students, who spend a semester each in Oslo, Dublin and Malta.
Contained herein are the abstracts of selected theses from the four programmes, some details on the researchers and information on where to find the full text of each thesis, many of which are available online at our Institute Repository, Arrow@DIT (http://arrow.dit.ie/). This is the second edition of our Booklet of Selected Theses series, and it celebrates graduates from 2010-2013. Having online access to full thesis text will be of considerable value to other researchers, to our current cohort of students and to prospective students on these MA programmes.
Each of these theses has been judged to be at a very high academic standard. Many shine a spotlight on little researched aspects of Irish society and provide empirical recommendations for policy makers and future researchers. We are hopeful that highlighting graduates’ research in this way may encourage them to further develop their work for publication in peer review journals.
We wish to congratulate our graduates on their achievements – the abstracts presented here are a small representation of the many long hours of work and study which produced the final theses. We wish them well in their future research and professional careers.
We would like to thank colleagues for help in producing this booklet. Joanne Boyle for typing, formatting and chasing up all the parts that make up this document; and Ralph Murphy for uploading the theses to Arrow.
Finally, we would like to acknowledge the commitment and dedication to academic rigour of the thesis supervisors and all our colleagues who lecture on these programmes.
Dr Matt Bowden, Programme Chair, MA in CriminologyDr Carmel Gallagher, Programme Chair, MA in Child, Family and Community StudiesDr Kevin Lalor, Head of School of Social Sciences and Law
April 201
The Link Between the Hidden Broad Line Region and the Accretion Rate in Seyfert 2 Galaxies
In the past few years more and more pieces of evidence have been presented
for a revision of the widely accepted Unified Model of Active Galactic Nuclei.
A model based solely on orientation cannot explain all the observed
phenomenology. In the following, we will present evidence that accretion rate
is also a key parameter for the presence of Hidden Broad Line Regions in
Seyfert 2 galaxies. Our sample consists of 21 sources with polarized Hidden
Broad Lines and 18 sources without Hidden Broad Lines. We use stellar velocity
dispersions from several studies on the CaII and Mg b triplets in Seyfert 2
galaxies, to estimate the mass of the central black holes via the
Mbh-{\sigma}\ast relation. The ratio between the bolometric luminosity, derived
from the intrinsic (i.e. unabsorbed) X-ray luminosity, and the Eddington
luminosity is a measure of the rate at which matter accretes onto the central
supermassive black hole. A separation between Compton-thin HBLR and non-HBLR
sources is clear, both in accretion rate (log Lbol/LEdd = -1.9) and in
luminosity (log Lbol = 43.90). When, properly luminosity-corrected,
Compton-thick sources are included, the separation between HBLR and non-HBLR is
less sharp but no HBLR source falls below the Eddington ratio threshold. We
speculate that non-HBLR Compton-thick sources with accretion rate higher than
the threshold, do possess a BLR, but something, probably related to their heavy
absorption, is preventing us from observing it even in polarized light. Our
results for Compton-thin sources support theoretical expectations. In a model
presented by Nicastro (2000), the presence of broad emission lines is
intrinsically connected with disk instabilities occuring in proximity of a
transition radius, which is a function of the accretion rate, becoming smaller
than the innermost stable orbit for very low accretion rates and therefore
luminosities.Comment: 23 pages, 4 figure
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