19 research outputs found

    Wiedemann-Franz violation in the vortex state of a d-wave superconductor

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    We show that the Wiedemann-Franz law is violated in the vortex state of a d-wave superconductor at zero temperature. We use a semiclassical approach, which includes the Doppler shift on the quasiparticles as well as the Andreev scattering from a random distribution of vortices. We also show that the vertex corrections to the electrical conductivity due to the anisotropy of impurity scattering become unimportant in the presence of a sufficiently large magnetic field.Comment: To be published in Physica C as a proceeding of M2S-HTSC Rio 200

    Towards Semi-Supervised Learning of Automatic Post-Editing: Data-Synthesis by Infilling Mask with Erroneous Tokens

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    Semi-supervised learning that leverages synthetic training data has been widely adopted in the field of Automatic post-editing (APE) to overcome the lack of human-annotated training data. In that context, data-synthesis methods to create high-quality synthetic data have also received much attention. Considering that APE takes machine-translation outputs containing translation errors as input, we propose a noising-based data-synthesis method that uses a mask language model to create noisy texts through substituting masked tokens with erroneous tokens, yet following the error-quantity statistics appearing in genuine APE data. In addition, we propose corpus interleaving, which is to combine two separate synthetic data by taking only advantageous samples, to further enhance the quality of the synthetic data created with our noising method. Experimental results reveal that using the synthetic data created with our approach results in significant improvements in APE performance upon using other synthetic data created with different existing data-synthesis methods

    Correlation between Short-Form 36 Scores and Neck Disability Index in Patients Undergoing Anterior Cervical Discectomy and Fusion

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    Study Design Case control study. Purpose To determine how the Neck Disability Index (NDI), a cervical spine-specific outcome, reflects health-related quality-of-life, and if NDI is correlated to the 36-item Short-Form Health Survey (SF-36) scores. Overview of Literature NDI is a useful tool for assessing health-related quality of life in patients with neck pain. Methods We used the Pearson product-moment correlation coefficient to assess the validity of all items under NDI and SF-36, and the Pearson’s correlation coefficient to assess the correlation between NDI and total SF-36 scores. The primary outcome measures were spine-specific health status- and general health status-measures after spine surgery, and these were evaluated every year for 2 years, using both NDI and SF-36 scores. Results NDI had a strong linear correlation with SF-36 and its two scales, the Physical Component Score (PCS) and the Mental Component Score (MCS), attesting to the validity of these two instruments. Among the eight subscales of SF-36, there was a strong linear correlation between NDI and PCS-physical functioning, PCS-bodily pain, and MCS-role emotional. Further, a moderate linear correlation was observed between NDI and subscales of PCS-role physical, PCS-general health, and MCS-social functioning, and between NDI and MCS-vitality and MCS-mental health. Conclusions Our findings suggest that the NDI adequately reflects the patient’s physical and mental quality of life, implying that the use of NDI to assess functional outcomes can also be ultimately used to evaluate the patient’s quality of life

    Effects of an in-plane magnetic field on c-axis sum rule and superfluid density in high-TcT_{c} cuprates

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    In layered cuprates, the application of an in-plane magnetic field (H)({\bf H}) changes the c-axis optical sum rule and superfluid density ρs\rho_{s}. For pure incoherent c-axis coupling, H{\bf H} has no effect on either quantities but it does if an additional coherent component is present. For the coherent contribution, different characteristic variations on H{\bf H} and on temperature result from the constant part (t)(t_{\perp}) of the hopping matrix element and from the part (tϕ)(t_{\phi}) which has zero on the diagonal of the Brillouin zone. Only the constant part (t)(t_{\perp}) leads to a dependence on the direction of H{\bf H} as well as on its magnitude.Comment: 3 figure

    Interlayer coupling and the c-axis quasiparticle transport in high-TcT_{c} cuprates

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    The c-axis quasiparticle conductivity shows different behavior depending on the nature of the interlayer coupling. For coherent coupling with a constant hopping amplitude tt_{\perp}, the conductivity at zero frequency and zero temperature σ(0,0)\sigma(0,0) depends on the direction of the magnetic field, but it does not for angle-dependent hopping t(ϕ)t(\phi) which removes the contribution of the nodal quasiparticles. For incoherent coupling, the conductivity is also independent of field direction and changes only when paramagnetic effects are included. The conductivity sum rule can be used to determine the admixture of coherent to incoherent coupling. The value of σ(0,0)\sigma(0,0) can be dominated by tt_{\perp} while at the same time t(ϕ)t(\phi) dominates the temperature dependence of the superfluid density.Comment: 2 figure

    BERT를 활용한 크로스도메인 슬롯 채우기

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    Quality Estimation Using Dual Encoders with Transfer Learning

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