78 research outputs found

    PLCC and SROCC of blockiness measures for the JPEG images in MICT, IVC, TID2008, and TID2013 databases.

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    <p>PLCC and SROCC of blockiness measures for the JPEG images in MICT, IVC, TID2008, and TID2013 databases.</p

    Evaluation of the proposed measure and the corresponding <i>s</i><sub>2</sub> for the image“rushmore” from CSIQ database with Gaussian white noise of different variances and with different compression levels

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    <p>Evaluation of the proposed measure and the corresponding <i>s</i><sub>2</sub> for the image“rushmore” from CSIQ database with Gaussian white noise of different variances and with different compression levels</p

    Relationship between normalized blockiness measures and bitrates of some benchmark images.

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    <p>(a) lena, (b) couple, (c) landscape, (d) bird, (e) lighthouse, and (f) statue. For the copyright issue, the original images are not shown here.</p

    Evaluation of the proposed measure and the corresponding <i>s</i><sub>2</sub> for the image“rushmore” from CSIQ database with salt and pepper noise of different densities and with different compression levels

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    <p>Evaluation of the proposed measure and the corresponding <i>s</i><sub>2</sub> for the image“rushmore” from CSIQ database with salt and pepper noise of different densities and with different compression levels</p

    RMSE of blockiness measures for the JPEG images in MICT, IVC and TID2008 databases.

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    <p>RMSE of blockiness measures for the JPEG images in MICT, IVC and TID2008 databases.</p

    Illustration of the block areas involved in the blockiness measure.

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    <p>Dark elements represent the regions (a) <i>R</i><sub><i>ih</i></sub>, (b) <i>R</i><sub><i>iv</i></sub>, (c) <i>R</i><sub><i>oh</i></sub>, (d) <i>R</i><sub><i>ov</i></sub>, (e) <i>I</i><sub><i>b</i></sub> and (f) <i>I</i><sub><i>bo</i></sub>.</p

    Strain Engineering of Two-Dimensional Piezophotocatalytic Materials for Improved Hydrogen Evolution Reaction

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    Transition metal dichalcogenide (TMDC) monolayers exhibit great photocatalytic performances and tunabilities. By using first-principles simulations based on density functional theory, we demonstrate here that external electric bias can be employed to further improve the photocatalytic hydrogen production efficiencies of the six AB2 (A = Mo, W and B = S, Se, Te) TMDC monolayers since these are influenced by their piezoelectric response. In particular, when subjected to a proper amount of electrically induced tensile biaxial strain, most TMDC monolayers turn into potentially ideal photocatalysts toward the hydrogen evolution reaction (HER). The beneficial effects of introducing tensile biaxial strain on the TMDC monolayers are not limited to the reduction of the band gap and proper adjustment of the band edge positions; the concomitant hydrogen adsorption free energies are also modified in such a way that the HER reaction is noticeably favored

    Numerical data

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    The data mainly contain the figure data in the manuscript and the temperature distribution of chaff in the combustion

    Double-Network Hydrogel with Strengthened Mechanical Property for Controllable Release of Antibacterial Peptide

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    Developing double-network (DN) hydrogels with high mechanical properties and antibacterial efficacy to combat multidrug-resistant bacterial infections and serve as scaffolds for cell culture still remains an ongoing challenge. In this study, an ion-responsive antibacterial peptide (AMP) (C16-WIIIKKK, termed as IK7) was synergistically combined with a photoresponsive gelatin methacryloyl (GelMA) polymer to fabricate a biocompatible DN hydrogel. The GelMA-IK7 DN hydrogel showed enhanced mechanical properties in contrast to the individual IK7 and GelMA hydrogels and demonstrated substantial antibacterial efficacy. Further investigations revealed that the DN hydrogel effectively inhibited bacterial growth by the controlled and sustained release of the IK7 peptide. In addition, the formation of the DN hydrogel was also found to protect AMP IK7 from rapid degradation by proteinase K. Our findings suggested that the developed GelMA-IK7 DN hydrogel holds great potential for next-generation antibacterial hydrogels for three-dimensional cell culture and tissue regeneration
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