996 research outputs found

    One year of monitoring the Vela pulsar using a Phased Array Feed

    Full text link
    We have observed the Vela pulsar for one year using a Phased Array Feed (PAF) receiver on the 12-metre antenna of the Parkes Test-Bed Facility. These observations have allowed us to investigate the stability of the PAF beam-weights over time, to demonstrate that pulsars can be timed over long periods using PAF technology and to detect and study the most recent glitch event that occurred on 12 December 2016. The beam-weights are shown to be stable to 1% on time scales on the order of three weeks. We discuss the implications of this for monitoring pulsars using PAFs on single dish telescopes.Comment: 6 pages, 4 figures, 2 tables. Accepted for publication in PAS

    The Swift BAT Survey Detects Two Optical Broad Line, X-ray Heavily Obscured Active Galaxies: NVSS 193013+341047 and IRAS 05218-1212

    Full text link
    The Swift Burst Alert Telescope (BAT) is discovering interesting new objects while monitoring the sky in the 14-195 keV band. Here we present the X-ray properties and spectral energy distributions for two unusual AGN sources. Both NVSS 193013+341047 and IRAS 05218-1212 are absorbed, Compton-thin, but heavily obscured (NH \sim 10^23 cm-2), X-ray sources at redshifts < 0.1. The spectral energy distributions reveal these galaxies to be very red, with high extinction in the optical and UV. A similar SED is seen for the extremely red objects (EROs) detected in the higher redshift universe. This suggests that these unusual BAT-detected sources are a low- redshift (z << 1) analog to EROs, which recent evidence suggests are a class of the elusive type II quasars. Studying the multi-wavelength properties of these sources may reveal the properties of their high redshift counterparts.Comment: 20 pages, accepted to Ap

    Collecting Ourselves: An Analysis of holdings in North Carolina libraries of selected categories from the "North Carolina Bibliography"

    Get PDF
    Despite the Electronic Age’s impact on libraries, blurring the lines between brick and mortar and the Web, the value of collecting locally and regionally focused works remains high. Of equal importance is a deeper understanding of the choices which local and regional institutions make when collecting information about their geographical areas. As the use of bibliographies is critical to identifying resources for acquisition, this initial study was accomplished by compiling holdings information in OCLC’s WorldCat for titles listed in three sections of the “North Carolina Bibliography� to gain insight into how North Carolina libraries are collecting both North Carolina authors and state focused materials. This comparison will ascertain how widely held the titles are by both academic and public libraries from across the state and worldwide

    Emotions, delay, and avoidance in cancer screening:Roles for fear, embarrassment and disgust

    Get PDF
    Delay and avoidance are massive problems in cancer screening. While work continues to examine demographic and cognitive factors, emotions are central and likely causally implicated. In this chapter, a discrete emotions view of the origins of cancer screening is presented. After characterizing emotions, focus rests on evaluating the evidence regarding how and why three avoidance-promoting emotions (fear, embarrassment, and disgust) are implicated. The chapter describes the symptoms and medical examinations that elicit these emotions and suggests that people fail to screen for breast, colorectal, and prostate cancers because screenings elicit (or are anticipated to elicit) these feelings. It concludes by assessing some of the measurement, design, and interpretative challenges in the area, considers the sexual nature of many screens, and discusses the fact that screenings may elicit multiple emotional responses.<br/

    Engaging community with social research: using social research to develop and evaluate local government community engagement initiatives

    Get PDF
    In 2011, a partnership between the Community Development and Facilities Branch of the Toowoomba Regional Council and Dr Andrew Hickey from the University of Southern Queensland commenced exploring the uses of social research in local government community development practice. The branch had identified a need for developing richer accounts of communities located within the Toowoomba region local government area, and although significant economic and demographic datasets were available via in-house and external providers, including the Australian Bureau of Statistics Census of Population and Housing (2011, 2006) and Council’s own ‘Community Profile’ (2011) and ‘Community Atlas’ (2011) socio-demographic maps, the analyses of community drawn from these accounts could not provide Branch staff with a complete picture of the communities they were working with. Branch staff sought a sense of the qualitative aspects of living within community and set about attempting to identify the relational and affective nature of their communities. Through the gathering of accounts of the experience of community, Branch staff sought to refine and target program delivery in their community engagement initiatives. To this end, a partnership with Dr Andrew Hickey, a social researcher based at the University of Southern Queensland commenced, and set about identifying a skill set that community development practitioners in local government might draw on to effectively account for and record the relational and experiential aspects of community (Pretty 2002; Hickey 2012). An outcome of this early partnership included the development of a set of practitioner focused research training resources initially trialled with Community Development and Facilities Branch staff of Toowoomba Regional Council through 2012. Further funding to develop these resources was needed however, and following the securing of an ACELG Partnership Grant, the project extended to commence development of a web-based professional development training package, The Social Research Toolkit, underpinned by a research agenda that sought to understand how local government practitioners (especially those in community engagement and development) might go about using social research within their day-to-day practice. With a project team including Dr Andrew Hickey (University of Southern Queensland), Mr Paul Reynolds (Toowoomba Regional Council) and Dr Lisa McDonald (University of Southern Queensland), the development of The Social Research Toolkit commenced and a field-based research project exploring the uses of qualitative social research in local government settings undertaken in sites across Australia. This report details the key findings drawn from the Partnership Grant that supported this project and provides insight into the ways social research might come to be used in local government community engagement

    2003-2004 Holiday Concert

    Get PDF
    https://spiral.lynn.edu/conservatory_otherseasonalconcerts/1059/thumbnail.jp

    XMM-Newton Archival Study of the ULX Population in Nearby Galaxies

    Full text link
    We present the results of an archival XMM-Newton study of the bright X-ray point sources (L_X > 10^38 erg/s) in 32 nearby galaxies. From our list of approximately 100 point sources, we attempt to determine if there is a low-state counterpart to the Ultraluminous X-ray (ULX) population, searching for a soft-hard state dichotomy similar to that known for Galactic X-ray binaries and testing the specific predictions of the IMBH hypothesis. To this end, we searched for "low-state" objects, which we defined as objects within our sample which had a spectrum well fit by a simple absorbed power law, and "high-state" objects, which we defined as objects better fit by a combined blackbody and a power law. Assuming that ``low-state'' objects accrete at approximately 10% of the Eddington luminosity (Done & Gierlinski 2003) and that "high-state" objects accrete near the Eddington luminosity we further divided our sample of sources into low and high state ULX sources. We classify 16 sources as low-state ULXs and 26 objects as high-state ULXs. As in Galactic black hole systems, the spectral indices, Gamma, of the low-state objects, as well as the luminosities, tend to be lower than those of the high-state objects. The observed range of blackbody temperatures for the high state is 0.1-1 keV, with the most luminous systems tending toward the lowest temperatures. We therefore divide our high-state ULXs into candidate IMBHs (with blackbody temperatures of approximately 0.1 keV) and candidate stellar mass BHs (with blackbody temperatures of approximately 1.0 keV). A subset of the candidate stellar mass BHs have spectra that are well-fit by a Comptonization model, a property similar of Galactic BHs radiating in the "very-high" state near the Eddington limit.Comment: 54 pages, submitted to ApJ (March 2005), accepted (May 2006); changes to organization of pape

    Playing Active Video Games may not develop movement skills: an intervention trial

    Get PDF
    Background: To investigate the impact of playing sports Active Video Games on children\u27s actual and perceived object control skills. Methods: Intervention children played Active Video Games for 6. weeks (1. h/week) in 2012. The Test of Gross Motor Development-2 assessed object control skill. The Pictorial Scale of Perceived Movement Skill Competence assessed perceived object control skill. Repeated measurements of object control and perceived object control were analysed for the whole sample, using linear mixed models, which included fixed effects for group (intervention or control) and time (pre and post) and their interaction. The first model adjusted for sex only and the second model also adjusted for age, and prior ball sports experience (yes/no). Seven mixed-gender focus discussions were conducted with intervention children after programme completion. Results: Ninety-five Australian children (55% girls; 43% intervention group) aged 4 to 8. years (M 6.2, SD 0.95) participated. Object control skill improved over time (p=0.006) but there was no significant difference (p=0.913) between groups in improvement (predicted means: control 31.80 to 33.53, SED=0.748; intervention 30.33 to 31.83, SED=0.835). A similar result held for the second model. Similarly the intervention did not change perceived object control in Model 1 (predicted means: control: 19.08 to 18.68, SED=0.362; intervention 18.67 to 18.88, SED=0.406) or Model 2. Children found the intervention enjoyable, but most did not perceive direct equivalence between Active Video Games and \u27real life\u27 activities. Conclusions: Whilst Active Video Game play may help introduce children to sport, this amount of time playing is unlikely to build skill
    • …
    corecore