7,909 research outputs found
Letter from Ray E. Carr, Associated Civic Clubs of Southern Utah to Carl Hayden
No full textLetter from Ray E. Carr to Carl Hayden with an invitation to celebrate the crossing of L.D.S. pioneers at Lee's Ferry
Letter from Paul M. Roca on behalf of Carl Hayden to Ray E. Carr, Associated Civic Clubs of Southern Utah
No full textLetter from Paul M. Roca to Ray E. Carr on behalf of Carl Hayden politely declining his invitation
New insights on accretion in supergiant fast X-ray transients from XMM-Newton and INTEGRAL observations of IGR J17544-2619
No full textXMM–Newton observations of the supergiant fast X-ray transient IGR J17544?2619 are reported and placed in the context of an analysis of archival INTEGRAL/IBIS data that provide a refined estimate of the orbital period at 4.9272?±?0.0004?d. A complete outburst history across the INTEGRAL mission is reported. Although the new XMM–Newton observations (each lasting ?15 ks) targeted the peak flux in the phase-folded hard X-ray light curve of IGR J17544?2619, no bright outbursts were observed, the source spending the majority of the exposure at intermediate luminosities of the order of several 1033?erg?s?1 (0.5–10 keV) and displaying only low level flickering activity. For the final portion of the exposure, the luminosity of IGR J17544?2619 dropped to ?4?×?1032?erg?s?1 (0.5–10 keV), comparable with the lowest luminosities ever detected from this source, despite the observations being taken near to periastron. We consider the possible orbital geometry of IGR J17544?2619 and the implications for the nature of the mass transfer and accretion mechanisms for both IGR J17544?2619 and the supergiant fast X-ray transients (SFXTs) population. We conclude that accretion under the ‘quasi-spherical accretion’ model provides a good description of the behaviour of IGR J17544?2619 and suggests an additional mechanism for generating outbursts based upon the mass accumulation rate in the hot shell (atmosphere) that forms around the neutron star under the quasi-spherical formulation. Hence, we hope to aid in explaining the varied outburst behaviours observed across the SFXT population with a consistent underlying physical model
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Bloody eroticism in interview with the vampire: from literature to the audiovisual domain
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-graduação em Letras/Inglês e Literatura CorrespondenteEste estudo tem o intuito de investigar como textos literários são adaptados para o cinema. Esta investigação foi feita usando-se o romance Entrevista com o Vampiro (1976) de Anne O´Brien Rice e sua adaptação fílmica (1994) dirigida por Neil Jordan. O aspecto principal do romance e do filme analisados durante a pesquisa foi o homoerotismo. Para se fazer a investigação foram usadas as passagens mais importantes do romance onde o homoerotismo é mais evidente, isto foi feito para dar apoio a hipótese de que o vampiros do sexo masculino de Rice tem atração um pelo outro, especialmente os protagonistas Louis, Lestat e Armand. Com relação ao filme, três cenas onde o homoerotismo é mais evidente foram selecionadas para mostrar como os adaptadores fazem a transposição. Ressalta-se que o conteúdo homoerótico da estória diminui drasticamente quando transposta para a tela do cinema sob a direção de Jordan. As implicações das escolhas feita pelos adaptadores são discutidas com respaldo em estudos de estudiosos de cinema. No caso de Entrevista com o Vampiro, muitos personagens do romance foram excluídos, a aparência física dos personagens principais foi mudada e muitos outros elementos foram acrescentados e subtraídos. Portanto, este estudo apresentará teorias de adaptação fílmica para tentar explicar como a transposição acontece. This study aims at investigating how literary texts are transposed to the screen. This investigation was done using the novel Interview with the Vampire (1976) by Anne O'Brien Rice and its filmic adaptation (1994) directed by Neil Jordan. The main aspect of the novel and the film analyzed during the research was the homoeroticism. In order to do the investigation the most important passages of the novel in which the homoeroticism is more evident were analyzed to support the hypothesis that Rice´s male vampires are attracted to each other, especially the protagonists Louis, Lestat and Armand. Regarding the film, three scenes from it in which the homoerotic overtones are more evident were selected to show how film adaptors perform the transposition. It must be pointed out that the homoerotic content of the story diminishes drastically when transposed to the screen under Jordan´s direction. The implications of the choices made by the adaptors are discussed under the light of film scholars. In the case of Interview with the Vampire, lots of characters from the novel were left out, the physical appearance of the main characters was changed and many other elements were subtracted and added. Thus this study will present theories of film adaptation to try to explain how the transposition takes place
The effect of transparency on recognition of overlapping objects
No full textAre overlapping objects easier to recognize when the objects are transparent or opaque? It is important to know whether the transparency of X-ray images of luggage contributes to the difficulty in searching those images for targets. Transparency provides extra information about objects that would normally be occluded but creates potentially ambiguous depth relations at the region of overlap. Two experiments investigated the threshold durations at which adult participants could accurately name pairs of overlapping objects that were opaque or transparent. In Experiment 1, the transparent displays included monocular cues to relative depth. Recognition of the back object was possible at shorter durations for transparent displays than for opaque displays. In Experiment 2, the transparent displays had no monocular depth cues. There was no difference in the duration at which the back object was recognized across transparent and opaque displays. The results of the two experiments suggest that transparent displays, even though less familiar than opaque displays, do not make object recognition more difficult, and possibly show a benefit. These findings call into question the importance of edge junctions in object recognitio
Active X-ray optics for the next generation of X-ray space telescopes
No full textDescribed within is the design, manufacture, metrology and X-ray testing of an active X-ray
prototype intended for the next generation of X-ray telescopes. One of the challenges faced by
the X-ray telescope community is how to combine high resolution and high sensitivity into one
system, as weight limitations place constraints on the optics that can be launched. Therefore the
mandate of the active X-ray prototype is to provide high sensitivity through the ability of the optics
to be nested and to deliver high angular resolution through the active control of the optic’s form.
Piezoelectric unimorph actuators provide the active component: it is intended that they will correct
for figure errors within the optic and therefore increase the angular resolution capability.
The prototype’s design is based upon an ellipsoidal segment which provides point-to-point
focussing of an X-ray source. The prototype itself is composed of an electroformed nickel optic
where the non-reflective surface is populated with 30 piezoelectric actuators and it is the production
of the prototype that is the core of the presented research. Metrology of the actuators’ influence
functions is presented and highlight the prototype’s ability to deform its optic surface by microns.
In addition, the measured influence functions are compared against finite element models and a
distinct similarity between the functions is observed.
The prototype was tested at an X-ray beamline facility in November 2008 and the results
showed the prototype’s ability to correct the optic to achieve an improved angular resolution: from
0.786 arc-minutes to 0.686 arc-minutes in terms of full width half maximum. Finally, difficulties
in the manufacture of the prototype and X-ray testing shall be presented alongside future work in
conclusion to this thesis
Correspondence regarding Horace Kephart collection
No full textThis 1940s correspondence between Arthur Stupka, Chas E. Ray, W. E. Bird, Blair Ross and Thurman Leatherwood concerns the Kephart collection. Horace Kephart (1862-1931) was a noted naturalist, woodsman, journalist, and author. In 1904, he left his work as a librarian in St. Louis and permanently moved to western North Carolina. His popular book, “Camping and Woodcraft” was first published 1906; the 1916/1917 edition is considered a standard manual for campers after almost a century of use. Living and working in a cabin on Hazel Creek in Swain County, Kephart began to document life in the Great Smoky Mountains, producing “Our Southern Highlanders” in 1913. Throughout his life, Kephart wrote many articles supporting the Great Smoky Mountains National Park
Oral history interview with Ray Anne Shrader, 2007 Feb. 5
No full textA long time faculty member in the Department of Physical Education for Women [now Health and Kinesiology] recounts experience as faculty advisor for students and Department changes with the combination of the Department of Physical Education for Men and Physical Education for Women, effective July 1, 1976. Also tells about the effects of Title IX at Purdue in the Division of Intercollegiate Athletics
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Enhanced colour encoding of materials discrimination information for multiple view dual-energy x-ray imaging
No full textThis thesis reports an investigation into dual-energy X-ray discrimination techniques. These techniques are designed to provide colour-coded materials discrimination information in a sequence of perspective images exhibiting sequential parallax. The methods developed are combined with a novel 3D imaging technique employing depth from motion or kinetic depth effect (KDE). This technique when applied to X-ray images is termed KDEX imaging and was developed previously by the university team for luggage screening applications at security checkpoints. A primary motivation for this research is that the dual-energy X-ray techniques, which are routinely incorporated into ‘standard’ 2D luggage scanners, provide relatively crude materials discrimination information. In this work it was critical that robust materials discrimination and colour encoding process was implemented as the sequential parallax exhibited by the KDEX imagery may introduce colour changes, due to the different X-ray beam paths associated with each perspective image. Any introduction of ‘colour noise’ into the resultant image sequences could affect the perception of depth and hinder the ongoing assessment of the potential utility of the dual-energy KDEX technique. Two dual-energy discrimination methods have been developed, termed K-II and W-E respectively. Employing the total amount of attenuation measured at each energy level and the weight fraction of layered structures, a combination of the K-II and the W-E techniques enables the computation and extraction of a target objects’ effective atomic number (Zeff) and its surface density (ρS) in the presence of masking layers
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