1,107 research outputs found

    USU Athletics: Aggies Recognize 189 Student-Athletes at Annual Whitesides Luncheon

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    Utah Stateā€™s athletics department recognized 189 student-athletes for achieving a 3.2 grade point average at the 20th annual Joe E. and Elma Whitesides Scholar-Athlete Luncheon on Tuesday. To be eligible for the honor, student-athletes must have a cumulative 3.2 grade point average or have posted a 3.2 GPA during the last two semesters.https://digitalcommons.usu.edu/huntsman_news/1113/thumbnail.jp

    REAL Knowledge at NASA: A Knowledge Services Model for the Modern Project Environment

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    REAL Knowledge at NASA: A Knowledge Services Model for the Modern Project Environmen

    Spectropolarimetry of SN 2011dh in M51: geometric insights on a Type IIb supernova progenitor and explosion

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    We present seven epochs of spectropolarimetry of the Type IIb supernova (SN) 2011dh in M51, spanning 86 days of its evolution. The first epoch was obtained 9 days after the explosion, when the photosphere was still in the depleted hydrogen layer of the stripped-envelope progenitor. Continuum polarization is securely detected at the level of P~0.5% through day 14 and appears to diminish by day 30, which is different from the prevailing trends suggested by studies of other core-collapse SNe. Time-variable modulations in P and position angle are detected across P-Cygni line features. H-alpha and HeI polarization peak after 30 days and exhibit position angles roughly aligned with the earlier continuum, while OI and CaII appear to be geometrically distinct. We discuss several possibilities to explain the evolution of the continuum and line polarization, including the potential effects of a tidally deformed progenitor star, aspherical radioactive heating by fast-rising plumes of Ni-56 from the core, oblique shock breakout, or scattering by circumstellar material. While these possibilities are plausible and guided by theoretical expectations, they are not unique solutions to the data. The construction of more detailed hydrodynamic and radiative-transfer models that incorporate complex aspherical geometries will be required to further elucidate the nature of the polarized radiation from SN 2011dh and other Type IIb supernovae.Comment: Post-proof edit. Accepted to MNRAS 2015 Aug 1

    Major Themes in Economics, v.2, 1986

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    Table of Contents: Investing in the Hotel Business in China - Katsuyuki Ohbayashi ... p.1 Diagnostic Related Groups: Dirty Rotten Guys or Dynamic Reduction in Government Expenditures - Eric Nielsen ... p.10 Where\u27s the Beef in Japan? Or, Why Isn\u27t Japan Importing More U.S. Beef? - Katherine Calhoun ... p.23 Book Review: The Theory of the Leisure Class, by Thorstein Veblen - Neal Jon Hoffman ... p.38https://scholarworks.uni.edu/mtie_os_v1_v2/1001/thumbnail.jp

    Smoking and Subclinical ILD in RA versus the Multi-Ethnic Study of Atherosclerosis

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    A population-based cohort showed an association between cigarette smoking and subclinical parenchymal lung disease defined as regions of increased computed tomography (CT) lung densitometry. This technique has not been applied to the rheumatoid arthritis (RA) population where associated ILD is highly prevalent. The association between cumulative cigarette smoking and volume of areas of high attenuation (HAA: >-600 and <-250 Hounsfield Units) on full inspiratory CT was compared in 172 RA participants and 3,969 controls in a general population sample. Multivariable regression models were used to adjust for demography, anthropometrics, percent emphysema, and CT parameters. The mean cumulative cigarette smoking exposure was 25 (IQR 10ā€“42) and 15(IQR 5ā€“31) pack-years for the RA and non-RA cohorts, respectively. Mean HAA was 153(Ā±57) cm3 and 129(Ā±50) cm3 in the RA and non-RA cohorts, respectively. Each 10 cigarette pack-year increment was associated with a higher HAA by 0.03% (95% CI, 0.007ā€“0.05%) in RA patients and by 0.008% (95% CI, 0.003ā€“0.01%) in those without RA (interaction p = 0.001). Cigarette smoking was associated with higher lung attenuation; with a magnitude of association more pronounced in those with RA than in the general population. These data suggest that cigarette smoking may be a more potent ILD risk factor for RA patients than in the general population

    SN2012ab: A Peculiar Type IIn Supernova with Aspherical Circumstellar Material

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    We present photometry, spectra, and spectropolarimetry of supernova (SN) 2012ab, mostly obtained over the course of āˆ¼300\sim 300 days after discovery. SN 2012ab was a Type IIn (SN IIn) event discovered near the nucleus of spiral galaxy 2MASXJ12224762+0536247. While its light curve resembles that of SN 1998S, its spectral evolution does not. We see indications of CSM interaction in the strong intermediate-width emission features, the high luminosity (peak at absolute magnitude M=āˆ’19.5M=-19.5), and the lack of broad absorption features in the spectrum. The HĪ±\alpha emission undergoes a peculiar transition. At early times it shows a broad blue emission wing out to āˆ’14,000-14{,}000 km sāˆ’1\mathrm{s^{-1}} and a truncated red wing. Then at late times (>> 100ā€‰\,days) it shows a truncated blue wing and a very broad red emission wing out to roughly +20,000+20{,}000 km sāˆ’1\mathrm{s^{-1}}. This late-time broad red wing probably arises in the reverse shock. Spectra also show an asymmetric intermediate-width HĪ±\alpha component with stronger emission on the red side at late times. The evolution of the asymmetric profiles requires a density structure in the distant CSM that is highly aspherical. Our spectropolarimetric data also suggest asphericity with a strong continuum polarization of āˆ¼1āˆ’3\sim 1-3% and depolarization in the HĪ±\alpha line, indicating asphericity in the CSM at a level comparable to that in other SNe IIn. We estimate a mass-loss rate of MĖ™=0.050ā€‰MāŠ™ā€‰yrāˆ’1\dot{M} = 0.050\, {\rm M}_{\odot}\,\mathrm{yr^{-1}} for vpre=100v_{\rm pre} = 100ā€‰\,kmā€‰\,sāˆ’1\mathrm{s^{-1}} extending back at least 75ā€‰\,yr prior to the SN. The strong departure from axisymmetry in the CSM of SN 2012ab may suggest that the progenitor was an eccentric binary system undergoing eruptive mass loss.Comment: 18 pages, 12 figure

    Getting It on Record: Issues and Strategies for Ethnographic Practice in Recording Studios

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    The recording studio has been somewhat neglected as a site for ethnographic fieldwork in the field of ethno-musicology and, moreover, the majority of published studies tend to overlook the specific concerns faced by the researcher within these contexts. Music recording studios can be places of creativity, artistry, and collaboration, but they often also involve challenging, intimidating, and fractious relations. Given that recording studios are, first and foremost, concerned with documenting musiciansā€™ performances, we discuss the concerns of getting studio interactions ā€œon recordā€ in terms of access, social relations, and methods of data collection. This article reflects on some of the issues we faced when conducting our fieldwork within British music recording facilities and makes suggestions based on strategies that we employed to address these issues

    Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog with Measured Completeness and Reliability Based on Data Release 25

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    We present the Kepler Object of Interest (KOI) catalog of transiting exoplanets based on searching 4 yr of Kepler time series photometry (Data Release 25, Q1ā€“Q17). The catalog contains 8054 KOIs, of which 4034 are planet candidates with periods between 0.25 and 632 days. Of these candidates, 219 are new, including two in multiplanet systems (KOI-82.06 and KOI-2926.05) and 10 high-reliability, terrestrial-size, habitable zone candidates. This catalog was created using a tool called the Robovetter, which automatically vets the DR25 threshold crossing events (TCEs). The Robovetter also vetted simulated data sets and measured how well it was able to separate TCEs caused by noise from those caused by low signal-to-noise transits. We discuss the Robovetter and the metrics it uses to sort TCEs. For orbital periods less than 100 days the Robovetter completeness (the fraction of simulated transits that are determined to be planet candidates) across all observed stars is greater than 85%. For the same period range, the catalog reliability (the fraction of candidates that are not due to instrumental or stellar noise) is greater than 98%. However, for low signal-to-noise candidates between 200 and 500 days around FGK-dwarf stars, the Robovetter is 76.7% complete and the catalog is 50.5% reliable. The KOI catalog, the transit fits, and all of the simulated data used to characterize this catalog are available at the NASA Exoplanet Archive
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