1,381 research outputs found

    Predictors of Engagement in Community-Based Therapy for Youths with Mood and Anxiety Disorders

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    The First Episode Mood and Anxiety Program (FEMAP) aims to identify and treat youths with mood and anxiety disorders. This research sought to identify factors associated with engagement in FEMAP, based on extensive data collected by FEMAP researchers. A logistic regression model was built from candidate variables using purposeful selection. Of the 366 participants offered treatment, 87% engaged in FEMAP. Quantity of alcohol consumed per occasion, gender, and anxiety sensitivity were found to be significant predictors of engagement. Gender and anxiety sensitivity interacted with each other such that at low anxiety sensitivity levels, the odds of engaging in FEMAP for females was higher than that of males. At high anxiety sensitivity levels, the odds of females engaging was less than that of males. FEMAP may use this information to identify individuals who are less likely to engage in treatment to facilitate improved engagement

    The Evans Family: Familial Relationships in George Eliot\u27s Life and Fiction

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    Biographers of George Eliot, when writing about her childhood, have focused on her close and complicated relationships with two of the most important men in her life, her father Robert Evans and brother Isaac Evans. Less discussed are Eliot’s relationships with her immediate female family members, her mother Christiana Pearson Evans and her sister Christiana (Chrissey) Evans Clarke. This thesis reviews the predominant interpretations of Eliot’s relations with her father and brother. It also pulls together the known information about Christiana and Chrissey from several major biographies and adds new insights from Eliot\u27s letters in combination with two of her most famous fictional works, Adam Bede (1859) and The Mill on the Floss (1860). Advisors: Beverley Rilett and Laura Whit

    Gamma-Ray Burst Spectral Features: Interpretation as X-ray Emission From A Photoionized Plasma

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    Numerous reports have been made of features, either in emission or absorption, in the 10 - 1000 keV spectra of some gamma-ray bursts. Originally interpreted in the context of Galactic neutron star models as cyclotron line emission and e+−e−e^+ - e^- annihilation features, the recent demonstration that the majority of GRBs lie at cosmological distances make these explanations unlikely. In this letter, we adopt a relativistic fireball model for cosmological GRBs in which dense, metal rich blobs or filaments of plasma are entrained in the relativistic outflow. In the context of this model, we investigate the conditions under which broadband features, similar to those detected, can be observed. We find a limited region of parameter space capable of reproducing the observed GRB spectra. Finally, we discuss possible constraints further high-energy spectral observations could place on fireball model parameters.Comment: Accepted for publication in Astrophysical Journal Letters Four pages, 2 figure

    Mid-J CO Emission From NGC 891: Microturbulent Molecular Shocks in Normal Star Forming Galaxies

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    We have detected the CO(6-5), CO(7-6), and [CI] 370 micron lines from the nuclear region of NGC 891 with our submillimeter grating spectrometer ZEUS on the CSO. These lines provide constraints on photodissociation region (PDR) and shock models that have been invoked to explain the H_2 S(0), S(1), and S(2) lines observed with Spitzer. We analyze our data together with the H_2 lines, CO(3-2), and IR continuum from the literature using a combined PDR/shock model. We find that the mid-J CO originates almost entirely from shock-excited warm molecular gas; contributions from PDRs are negligible. Also, almost all the H_2 S(2) and half of the S(1) line is predicted to emerge from shocks. Shocks with a pre-shock density of 2x10^4 cm^-3 and velocities of 10 km/s and 20 km/s for C-shocks and J-shocks, respectively, provide the best fit. In contrast, the [CI] line emission arises exclusively from the PDR component, which is best parameterized by a density of 3.2x10^3 cm^-3 and a FUV field of G_o = 100 for both PDR/shock-type combinations. Our mid-J CO observations show that turbulence is a very important heating source in molecular clouds, even in normal quiescent galaxies. The most likely energy sources for the shocks are supernovae or outflows from YSOs. The energetics of these shock sources favor C-shock excitation of the lines.Comment: 18 pages, 2 figures, 6 tables, accepted by Ap

    A quasioptical steering system for the CCAT/XSPEC submillimeter multi-object spectrometer

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    A two arm, opto-mechanical positioner mechanism is presented in this proceedings as a candidate steering system for the millimeter-wave XSPEC spectrograph. The design is well matched to the expected target density on the sky, and meeting all requirements of the Cerro Chajnantor Atacama Telescope (CCAT), site environmental conditions (e.g., operating temperature and power dissipation), and the positioning requirements themselves for acquiring and tracking astronomical objects whose light is fed into the XSPEC spectrograph units. The prototype design has been fabricated and tested for basic operations

    Proton Magnetic Resonance of Western Red Cedar

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    The potential of proton magnetic resonance techniques, in particular magnetic resonance imaging, for analysis of western red cedar has been investigated. Proton magnetic resonance experiments were carried out on normal sapwood, heartwood and juvenile wood and on rotten juvenile wood from western red cedar logs at a range of hydration levels. Signals from the solid wood and the water were readily distinguishable, and the solid wood signal was characterized by its second moment, which was about 5 x 109 s-2 above the saturation point for all samples and increased by about 20% below the fiber saturation point. The water signal was separated into earlywood tracheid lumen water, latewood tracheid and ray lumen water, and bound water on the basis of spin-spin relaxation times. In the normal log, heartwood and juvenile wood had substantially less water and also shorter spin-spin relaxation times than the sapwood. The rot sample had considerably more water than normal juvenile wood. With proton NMR the sapwood/heartwood boundary of western red cedar can be distinguished easily, but the heartwood/juvenile wood boundary is more difficult to discern. Rot should be identifiable from surrounding normal wood, especially if in heartwood or juvenile wood. With current technology, magnetic resonance imaging facilities can produce cross-sectional images of whole cedar logs; however these images are mainly of earlywood tracheid lumen water and hence show only about 60% of the water in a normal western red cedar log

    Transnational development cultures:navigating production, market, and cultural difference within European-Chinese game development teams

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    Discourse on the global games industry draws attention to the growth of China, in terms of both its consumer market and the games publishing landscape. Trade associations and government agencies have sought routes for Western games studios, publishers, and rights holders to connect with similar organisations in China. However, there has been limited focus on how Western and Chinese game developers understand and navigate the challenges of transnational collaboration and creativity in games production. This article presents a case study of five transnational game development teams, all of which were composed predominantly of developers from the UK and China who were tasked with producing game prototypes for both markets. Data gathered during game production included development diaries, interview data, game prototypes, and production documentation. Three themes emerged from analysis of the data: production practices and transnational working, navigating regulations and restrictions, and market and cultural differences. Findings highlight that developers encounter challenges around political and cultural difference that could inhibit production or lead to uncertainties in design decision making, but also that developers can quickly establish routes to collaboration and knowledge sharing that can help to overcome these barriers
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