1,647 research outputs found

    Differences by sex and gender in the association between minority stress and alcohol use among sexual and gender minority youth:A daily diary study

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    Rationale Sexual and gender minority (SGM) youth consume more alcohol than their heterosexual, cisgender peers. The experience of minority stress is theorized to explain these disparities. Research often neglects the day-to-day variability in minority stress that SGM youth encounter and whether alcohol use is associated with daily experiences of minority stress. Further, there is heterogeneity in alcohol use among SGM youth. Sex assigned at birth and gender identity could potentially explain this heterogeneity. Objective Therefore, this study aimed to examine whether daily experiences of minority stress were associated with daily alcohol use among SGM youth and how these associations differed by sex assigned at birth and gender identity. Methods A 14-day daily diary study was conducted among 393 Dutch SGM youth (M age = 18.36 SD = 2.65). Results Results showed few significant associations between both mean levels of minority stress and daily experiences with minority stress with alcohol use. However, higher mean levels of prejudice events were associated with higher odds of daily alcohol use (OR = 7.01, 95% CI: 1.20–40.89). Daily experiences with identity concealment were associated with lower odds of daily alcohol use for males (OR = 0.72, 95% CI: 0.60–0.86), but not for females (OR = 1.11, 95% CI: 0.93–1.32). Further, for cisgender youth, daily experiences with prejudice events were associated with higher odds of alcohol use (OR = 1.99, 95% CI: 1.05–3.78), but this was not the case for gender minority youth (OR = 0.42, 95% CI: 0.15–1.18). Conclusions The findings showed few significant associations between minority stressors and alcohol use, but daily experiences of concealment and prejudice events were associated with daily alcohol use and these associations varied by sex assigned at birth and gender identity, respectively

    Self-organization of linear nanochannel networks

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    A theoretical study has been conducted to explore the mechanics of self-organizing channel networks with dimensions in the submicron range and nanorange. The channels form by the partial release and bond back of prestressed thin films. In the release phase, the film spontaneously buckles into wrinkles of a certain wavelength, followed by a bond-back phase in which the final channel geometry is established through cohesive interface attractions. Results are presented in terms of the channel spacing, height, and width as a function of the film stiffness, thickness, eigenstrain, etch width, and interface energy. We have identified two dimensionless parameters that fully quantify the network assembly, showing excellent agreement with experiments. Our results provide valuable insight for the design of submicron and nanoscale channel networks with specific geometries

    Manieren van leren onderwijzen en relaties met persoonsgebonden en contextuele variabelen

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    Het doel van deze studie was het in kaart brengen en beter begrijpen van individuele verschillen bij het leren onderwijzen. Op basis van twee eerdere studies werd een gereviseerd instrument, de Inventory Learning to Teach Process (ILTP), uitgezet onder 382 leraren-in-opleiding. Factoranalyse resulteerde in de identificatie van 10 schalen, die betrekking hebben op cognitieve, regulatieve en affectieve aspecten van het leerproces van lerarenin-opleiding. Clusteranalyse op basis van deze schalen leverde vier patronen op die gekarakteriseerd kunnen worden als manieren van leren onderwijzen. De labels open betekenisgericht, gesloten betekenisgericht, gesloten reproductiegericht en inactief/overlevingsgericht werden gekozen om de vier patronen te karakteriseren. Variantieanalyse bracht vervolgens duidelijke samenhangen naar voren tussen de vier manieren van leren onderwijzen, persoonsgebonden kenmerken en (gepercipieerde) contextvariabelen. De conclusie luidt dat “één opleidingsmodel voor allen” niet effectief is als het gaat om kennisconstructie en de ontwikkeling van doorgroeicompetentie. Leraren-in-opleiding hebben verschillende maatregelen nodig, die afgestemd zijn op hoe zij op dat moment in hun leerproces staan. Enkele richtlijnen voor de praktijk worden voorgesteld

    Na2IrO3 as a spin-orbit-assisted antiferromagnetic insulator with a 340 meV gap

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    We study Na2IrO3 by ARPES, optics, and band structure calculations in the local-density approximation (LDA). The weak dispersion of the Ir 5d-t2g manifold highlights the importance of structural distortions and spin-orbit coupling (SO) in driving the system closer to a Mott transition. We detect an insulating gap {\Delta}_gap = 340 meV which, at variance with a Slater-type description, is already open at 300 K and does not show significant temperature dependence even across T_N ~ 15 K. An LDA analysis with the inclusion of SO and Coulomb repulsion U reveals that, while the prodromes of an underlying insulating state are already found in LDA+SO, the correct gap magnitude can only be reproduced by LDA+SO+U, with U = 3 eV. This establishes Na2IrO3 as a novel type of Mott-like correlated insulator in which Coulomb and relativistic effects have to be treated on an equal footing.Comment: Accepted in Physical Review Letters. Auxiliary and related material can be found at: http://www.phas.ubc.ca/~quantmat/ARPES/PUBLICATIONS/articles.htm

    PCN10 ARE FURTHER STUDIES OF BREAST CANCER TUMOR MARKERS TO DETECT RECURRENCE WORTHWHILE? A VALUE OF RESEARCH ANALYSIS

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    Cuello, Ramon (escultor)Primer pla de l'obra. Davant de la casa on vivia l'escultor a Sants hi havia hagut una fonda on paraven les diligències que unien l'interior de Catalunya amb el port de Barcelona. De metall, mesura 2,58 x 0,80 x 0,80 metres
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