78 research outputs found
PLCC and SROCC of blockiness measures for the JPEG images in MICT, IVC, TID2008, and TID2013 databases.
<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
<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.
<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
<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.
<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.
<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
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
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
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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