1,787 research outputs found

    C.S. Lewis: Reactions from Women

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    Recounts the experiences of eight women (including the author) who knew C.S. Lewis

    High-k fluoropolymers dielectrics for low-bias ambipolar organic light emitting transistors (Olets)

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    Funding Information: Author Contributions: Conceptualization, A.A. and C.S.; methodology, A.A. and C.S.; validation, A.A., K.G.-R., and C.S.; data curation, A.A., K.G.-R., and C.S.; writing—original draft preparation, A.A. and C.S.; writing—review and editing, A.A., K.G.-R., and C.S.; supervision, C.S.; project administration, C.S.; funding acquisition, C.S. All authors have read and agreed to the published ver-sion ofFunding:the manuThescript.authors acknowledge the support from the Academy of Finland Flagship Program (Grant No.: 320167, PREIN) and the Aalto seed funding scheme. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Organic light emitting transistors (OLETs) combine, in the same device, the function of an electrical switch with the capability of generating light under appropriate bias conditions. In this work, we demonstrate how engineering the dielectric layer based on high-k polyvinylidene fluoride (PVDF)-based polymers can lead to a drastic reduction of device driving voltages and the improvement of its optoelectronic properties. We first investigated the morphology and the dielectric response of these polymer dielectrics in terms of polymer (P(VDF-TrFE) and P(VDF-TrFE-CFE)) and solvent content (cyclopentanone, methylethylketone). Implementing these high-k PVDF-based dielectrics enabled low-bias ambipolar organic light emitting transistors, with reduced threshold voltages (<20 V) and enhanced light output (compared to conventional polymer reference), along with an overall improvement of the device efficiency. Further, we preliminary transferred these fluorinated high-k dielectric films onto a plastic substrate to enable flexible light emitting transistors. These findings hold potential for broader exploitation of the OLET platform, where the device can now be driven by commercially available electronics, thus enabling flexible low-bias organic electronic devices.Peer reviewe

    Breathed Through Silver: C.S. Lewis and the Truth of Beauty

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    C.S. Lewis rarely wrote about beauty, but his writings are often extremely beautiful. For Lewis, the beautiful was an ongoing witness to the truth of Christianity, evoking a longing that only God can fulfill. In this sectional, we will look at examples from his writings — his poetry, essays, and his fiction — in order to set forth Lewis\u27 vision of the beautiful and how it can shape our proclamation and witness today

    Auditory novelty oddball allows reliable distinction of top-down and bottom-up processes of attention

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    An auditory novelty-oddball task, which is known to evoke a P3 event-related potential (ERP) in a target condition and a novelty-P3 ERP in response to task-irrelevant unique environmental sounds, was repeatedly applied to healthy participants (n=14) on two separate recording sessions, 7 days apart. Both target-P3 and novelty-P3 were internally consistent and test–retest reliable. Interestingly, novelty-P3 amplitude declined from the first to the second half of each recording session, whereas no systematic alteration between both sessions occurred. The target-P3 showed the opposite pattern, i.e. a reduced amplitude from the first to the second session, but no systematic change within each session. These findings suggest that novelty-P3 amplitude changes reflect habituation, whereas target-P3 session effects may indicate the adjusted amount of processing resources invested into the task. In general, the results support the interpretation of the novelty-P3 as indicating automatic, bottom–up related aspects of attention, whereas the target-P3, in the present paradigm, seems to reflect voluntary, top–down related aspects of attentio

    Event-related power modulations during concurrent tACS-MEG

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    Software code underlying the results presented in: Kasten, F.H., Maess, B., Herrmann, C.S., 2018. Facilitated Event-Related Power-Modulations during Transcranial Alternating Current Stimulation (tACS) Revealed by Concurrent tACS-MEG. eNeuro doi:10.1523/ENEURO.0069-18.2018 https://doi.org/10.1523/ENEURO.0069-18.201

    C.S. Lewis: adaptations of life and work

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    The author discusses film representations of the life of C.S. Lewis – a famous English Christian writer. She also focuses on adaptations (that include books, television and cinema) of his most famous series The Chronicles of Narnia – series that for already sixty years have been published all over the world

    The Nurse of Elfland: Lizzie Endicott and C.S. Lewis

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    In Surprised by Joy, C.S. Lewis introduced Lizzie Endicott as the first of two other blessings in his childhood, even before his introduction of Warnie. But apart from his abbreviated 136-word biography, very little is known about the nurse who introduced Lewis to faery tales. Based on the Lewis Family Papers, genealogical research, and personal interviews with Lizzie’s relatives, this article introduces Lizzie to the world of Lewismania. It also suggests various ways in which Lizzie influenced the man and the author that C.S. Lewis became, as well as the mythical worlds he created and Lewis’s anonymous tributes to her

    Remembering C.S. Lewis recollections of those who knew him

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    In this intimate, candid, and sometimes surprising community biography of the celebrated author and Christian apologist, twenty-four men and women who knew C.S. Lewis, as teacher, colleague, friend, offer their reminiscences and impressions of the complex man behind the critical and academic acclaim

    Evaluating non-linear transfer characteristics of AM-tACS hardware setups

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    This repository provides raw data and scripts used to evaluate non-linear properties of tACS stimulation and recording harware. These non-linearities can lead to spurious low-frequency artifacts during amplitude modulated transcranial alternating current stimulation. For details see: Kasten, F.H., Negahbani, E., Fröhlich, F., Herrmann, C.S., Non-linear transfer characteristics of stimulation and recording hardware account for spurious low-frequency artifacts during amplitude modulated transcranial alternating current stimulation (AM-tACS), NeuroImage (2018), doi: 10.1016/j.neuroimage.2018.05.068. https://www.sciencedirect.com/science/article/pii/S1053811918304944 If you find this code and/or data useful, please consider citing the above reference
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