134 research outputs found

    myTunes: Digital music library users and their self-images

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    This investigation explored the relationships between individuals’ self-images and their interactions with their digital music collections via the commercially predominant program iTunes. Sixty-nine university students completed an internet-based Musical Self-Images Questionnaire (MSIQ) along with a series of questions concerning their iTunes collections. The majority of participants were highly engaged with music, regardless of their varied musical backgrounds. Factor analysis of the MSIQ data revealed two distinct self-image groups, which we label as ‘musical practitioner’ (linking ‘overall musician’, ‘performer’, ‘composer’, ‘teacher’, and ‘listener’) and ‘music consumer’ (linking ‘listener’, ‘fan’, and ‘technology user’). Participants used an average of seven attributes to categorize their music, and most consistently used one in particular to sort their collections. Those who rated themselves as higher level performers and fans used the playlist function (which involves compiling sequences of selected tracks) more often than those with lower self-ratings on those scales

    Who Shares? Who Doesn't? Factors Associated with Openly Archiving Raw Research Data

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    Many initiatives encourage investigators to share their raw datasets in hopes of increasing research efficiency and quality. Despite these investments of time and money, we do not have a firm grasp of who openly shares raw research data, who doesn't, and which initiatives are correlated with high rates of data sharing. In this analysis I use bibliometric methods to identify patterns in the frequency with which investigators openly archive their raw gene expression microarray datasets after study publication

    Gas Source Molecular Beam Epitaxy of Compound Semiconductors

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    Contains an introduction and reports on seven research projects.Defense Advanced Research Projects Agency Subcontract 284-25041Joint Services Electronics Program Contract DAAL04-95-1-0038National Center for Integrated Photonic Technology Contract 542-381U.S. Army Research Office/ AASERT Contract DAAH04-93-G-0175National Science Foundation Grant DMR 92-02957Joint Services Electronics Program Grant DAAL04-95-1-0038National Science Foundation Grant DMR 90-22933National Science Foundation Grant DMR 92-02957National Center for Integrated Photonic Technology Contract 542-381MIT Lincoln LaboratoryNational Center for Integrated Photonic Technology Subcontract 542-383National Science Foundation DMR 94-0033

    Optics and Quantum Electronics

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    Contains table of contents on Section 3 and reports on nineteen research projects.Defense Advanced Research Projects Agency Grant F49620-96-0126Joint Services Electronics Program Grant DAAH04-95-1-0038National Science Foundation Grant ECS 94-23737U.S. Air Force - Office of Scientific Research Contract F49620-95-1-0221U.S. Navy - Office of Naval Research Grant N00014-95-1-0715Defense Advanced Research Projects Agency/National Center for Integrated Photonics TechnologyMultidisciplinary Research InitiativeU.S. Air Force - Office of Scientific ResearchNational Science Foundation/MRSECU.S. Navy - Office of Naval Research (MFEL) Contract N00014-91-J-1956National Institutes of Health Grant R01-EY11289U.S. Navy - Office of Naval Research (MFEL) Contract N00014-94-0717Defense Advanced Research Projects Agency Contract N66001-96-C-863

    Active Surveillance for Prostate Cancer: A Systematic Review of the Literature

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    Context: Prostate cancer (PCa) remains an increasingly common malignancy worldwide. The optimal management of clinically localized, early-stage disease remains unknown, and profound quality of life issues surround PCa interventions. Objective: To systematically summarize the current literature on the management of low-risk PCa with active surveillance (AS), with a focus on patient selection, outcomes, and future research needs. Evidence acquisition: A comprehensive search of the PubMed and Embase databases from 1980 to 2011 was performed to identify studies pertaining to AS for PCa. The search terms used included prostate cancer and active surveillance or conservative management or watchful waiting or expectant management. Selected studies for outcomes analysis had to provide a comprehensive description of entry characteristics, criteria for surveillance, and indicators for further intervention. Evidence synthesis: Data from seven large AS series were reviewed. Inclusion criteria for surveillance vary among studies, and eligibility therefore varies considerably (4-82%). PCa-specific mortality remains low (0-1%), with the longest published-median follow-up being 6.8 yr. Up to one-third of patients receive secondary therapy after a median of about 2.5 yr of surveillance. Surveillance protocols and triggers for intervention vary among institutions. Most patients are treated for histologic reclassification (27-100%) or prostate-specific antigen doubling time <3 yr (13-48%), while 7-13% are treated with no evidence of progression. Repeat prostate biopsy with a minimum of 12 cores appears to be important for monitoring patients for changes in tumor histology over time. Conclusions: AS for PCa offers an opportunity to limit intervention to patients who will likely benefit the most from radical treatment. This approach confers a low risk of disease-specific mortality in the short to intermediate term. An early, confirmatory biopsy is essential for limiting the risk of underestimating tumor grade and amount. (C) 2012 European Association of Urology. Published by Elsevier B. V. All rights reserved

    0953 Experiences of Discrimination among College Students and Impact on Sleep Quality, Depression, Anxiety, and Suicide Ideation: Does Sleep Account for Relationships with Depressive Symptoms?

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    Abstract Introduction Discrimination may contribute to sleep disparities, a significant public health issue. Experiences of discrimination have been previously associated with poor sleep quality and depressed mood. The present study examined discrimination, poor sleep, and mental health among college/university students. Methods Data were from the 2011–2014 National College Health Assessment (N=109,883). Students reported whether they experienced “discrimination (e.g., homophobia, racism, sexism)” in the past 12 months. They also indicated whether they “felt very sad” (depressed mood), “felt overwhelming anxiety” (anxiety), or “seriously considered suicide” (suicide ideation) in the past 30 days. They also indicated whether “sleep difficulties” were “traumatic or very difficult to handle” in the last 12 months, whether they “had an extremely hard time falling asleep” at least 3 nights in the past week (insomnia), and the number of nights in the past week that they got enough sleep to feel rested in the morning. Relationships between discrimination and sleep and psychological outcomes were examined, adjusted for age, sex, race/ethnicity, and survey year. Partial mediation analyses examined whether sleep difficulty explained the relationship with psychological symptoms. Results Discrimination was reported by 6% of the sample. It was associated with sleep difficulty (OR=2.31; 95%CI[2.18,2.43]; p<0.0001), insomnia (OR=1.70; 95%CI[1.61,1.80]; p<0.0001), and insufficient sleep (B=0.33; 95%CI[0.28,0.38]; p<0.0001), as well as depressed mood (OR=2.13; 95%CI[2.02,2.25]; p<0.0001), anxiety (OR=2.04; 95%CI[1.93,2.15]; p<0.0001), and suicide ideation (OR=3.17; 95%CI[2.84,3.53]; p<0.0001). Partial mediation analyses showed that sleep difficulty explained 16.9% of the relationship between discrimination and depressed mood (p_sobel=0.0002), 20.1% of the relationship with anxiety (p_sobel=0.0005), and 14.7% of the relationship with suicide ideation (p_sobel=0.003). Conclusion Students that experienced discrimination were more likely to experience sleep problems as well as depressed mood, anxiety, and suicidal ideation. When assessing sleep difficulty as a mediator between discrimination and mental health, it was found that sleep accounted for 14.7%-20.1% of this relationship. Support (If Any)
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