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Holographic colour prints for enhanced optical security by combined phase and amplitude control.
Conventional optical security devices provide authentication by manipulating a specific property of light to produce a distinctive optical signature. For instance, microscopic colour prints modulate the amplitude, whereas...
Hermitian Yang–Mills Connections on Blowups
Consider a vector bundle over a Kähler manifold which admits a Hermitian Yang-Mills connection. We show that the pullback bundle on the blowup of the Kähler manifold at a collection of points also admits a Hermitian Yang-Mills...
Yang-Mills as massive Chern-Simons theory
The Yang-Mills (YM) equation in three spacetime dimensions (3D) can be modified to include a novel parity-preserving interaction term, with an inverse mass parameter, in addition to a possible topological mass term. The novelty...
A Highly Overmoded Structure for Hundred-Kilowatt-Class <italic>Ka</italic>-Band Extended Interaction Klystron
Yifan Zu, Xuesong Yuan, Xiaotao Xu, Hailong Li, Qingyun Chen, Matthew Thomas Cole, Lin Meng, Yang Yan
Sep 14, 2023
Here, we report on the development of highly overmoded structure for a millimeter-wave (MMW) extended interaction klystron (EIK). To enhance electron beam loading, a new method for designing an oversized beam tunnel in a...
Circular waveguides Couplings electric fields Electromagnetic waveguides electron beams Extended interaction klystron (EIK) highly overmoded structure Ka-band Periodic structures Rectangular waveguides vacuum electronics /dk/atira/pure/subjectarea/asjc/2500/2504 name=Electronic, Optical and Magnetic Materials /dk/atira/pure/subjectarea/asjc/2200/2208 name=Electrical and Electronic Engineering
Inverse Problem for the Yang–Mills Equations
Abstract: We show that a connection can be recovered up to gauge from source-to-solution type data associated with the Yang–Mills equations in Minkowski space R1+3. Our proof analyzes the principal symbols of waves generated by...
A Highly Overmoded Structure for Hundred-Kilowatt-Class <italic>Ka</italic>-Band Extended Interaction Klystron
Yifan Zu, Xuesong Yuan, Xiaotao Xu, Hailong Li, Qingyun Chen, Matthew Thomas Cole, Lin Meng, Yang Yan
Sep 14, 2023
Here, we report on the development of highly overmoded structure for a millimeter-wave (MMW) extended interaction klystron (EIK). To enhance electron beam loading, a new method for designing an oversized beam tunnel in a...
Circular waveguides Couplings electric fields Electromagnetic waveguides electron beams Extended interaction klystron (EIK) highly overmoded structure Ka-band Periodic structures Rectangular waveguides vacuum electronics /dk/atira/pure/subjectarea/asjc/2500/2504 name=Electronic, Optical and Magnetic Materials /dk/atira/pure/subjectarea/asjc/2200/2208 name=Electrical and Electronic Engineering
Twistors, the ASD Yang-Mills equations and 4d Chern-Simons theory
Abstract
We show that the approaches to integrable systems via 4d Chern-Simons theory and via symmetry reductions of the anti-self-dual Yang-Mills...
The Gluon Green's function in N=4 supersymmetric Yang-Mills theory.
The high energy limit of scattering amplitudes in the N = 4 supersymmetric Yang–
Mills theory is studied by solving the corresponding BFKL equation in the next–
to–leading approximation. The gluon Green’s function is analysed...
Published by: HEP, Cavendish Laboratory, University of Cambridge
Twistors, the ASD Yang-Mills equations and 4d Chern-Simons theory
Abstract
We show that the approaches to integrable systems via 4d Chern-Simons theory and via symmetry reductions of the anti-self-dual Yang-Mills...
Twistors, the ASD Yang-Mills equations and 4d Chern-Simons theory
Abstract
We show that the approaches to integrable systems via 4d Chern-Simons theory and via symmetry reductions of the anti-self-dual Yang-Mills...
Design and Characterization of a Novel Core–Shell Nano Delivery System Based on Zein and Carboxymethylated Short-Chain Amylose for Encapsulation of Curcumin
Zhiwei Lin, Linjie Zhan, Kaili Qin, Yang Li, Yang Qin, Lu Yang, Qingjie Sun, Na Ji, Fengwei Xie
Jun 11, 2024
Curcumin is a naturally occurring hydrophobic polyphenolic compound with a rapid metabolism, poor absorption, and low stability, which severely limits its bioavailability. Here, we employed a starch–protein-based nanoparticle...
anti-solvent precipitation biopolymer molecular interactions carboxymethylated short-chain amylose core–shell nanoparticles /dk/atira/pure/subjectarea/asjc/1100/1106 name=Food Science /dk/atira/pure/subjectarea/asjc/2400/2404 name=Microbiology /dk/atira/pure/subjectarea/asjc/3300/3306 name=Health(social science) /dk/atira/pure/subjectarea/asjc/3600/3601 name=Health Professions (miscellaneous) /dk/atira/pure/subjectarea/asjc/1100/1110 name=Plant Science
Insights into the Origin of High Activity of Ni5P4(0001) for Hydrogen Evolution Reaction.
Hydrogen evolution reaction (HER) is directly relevant to green hydrogen production from water splitting. Recently, a low-cost Ni5P4 material has been demonstrated experimentally and theoretically to exhibit excellent...
Solvent-assisted programming of flat polymer sheets into reconfigurable and self-healing 3D structures.
It is extremely challenging, yet critically desirable to convert 2D plastic films into 3D structures without any assisting equipment. Taking the advantage of solvent-induced bond-exchange reaction and elastic-plastic transition...
Twisting of a Pristine α-Fe Nanowire
The torsion of pristine α-Fe nanowires was studied by molecular dynamics simulations. Torsion-induced plastic deformation in pristine nanowires is divided into two regimes. Under weak torsion, plastic deformation leads to...
Insights into the Origin of High Activity of Ni<sub>5</sub>P<sub>4</sub>(0001) for Hydrogen Evolution Reaction.
Hydrogen evolution reaction (HER) is directly relevant to green hydrogen production from water splitting. Recently, a low-cost Ni5P4 material has been demonstrated experimentally and theoretically to...
Twisting of a Pristine α-Fe Nanowire
The torsion of pristine α-Fe nanowires was studied by molecular dynamics simulations. Torsion-induced plastic deformation in pristine nanowires is divided into two regimes. Under weak torsion, plastic deformation leads to...
Twisting of a Pristine α-Fe Nanowire
The torsion of pristine α-Fe nanowires was studied by molecular dynamics simulations. Torsion-induced plastic deformation in pristine nanowires is divided into two regimes. Under weak torsion, plastic deformation leads to...
Design and Characterization of a Novel Core–Shell Nano Delivery System Based on Zein and Carboxymethylated Short-Chain Amylose for Encapsulation of Curcumin
Zhiwei Lin, Linjie Zhan, Kaili Qin, Yang Li, Yang Qin, Lu Yang, Qingjie Sun, Na Ji, Fengwei Xie
Jun 11, 2024
Curcumin is a naturally occurring hydrophobic polyphenolic compound with a rapid metabolism, poor absorption, and low stability, which severely limits its bioavailability. Here, we employed a starch–protein-based nanoparticle...
anti-solvent precipitation biopolymer molecular interactions carboxymethylated short-chain amylose core–shell nanoparticles /dk/atira/pure/subjectarea/asjc/1100/1106 name=Food Science /dk/atira/pure/subjectarea/asjc/2400/2404 name=Microbiology /dk/atira/pure/subjectarea/asjc/3300/3306 name=Health(social science) /dk/atira/pure/subjectarea/asjc/3600/3601 name=Health Professions (miscellaneous) /dk/atira/pure/subjectarea/asjc/1100/1110 name=Plant Science
Calibrating the Dice Loss to Handle Neural Network Overconfidence for Biomedical Image Segmentation.
Michael Yeung, Leonardo Rundo, Yang Nan, Evis Sala, Carola-Bibiane Schönlieb, Guang Yang
Mar 25, 2023
The Dice similarity coefficient (DSC) is both a widely used metric and loss function for biomedical image segmentation due to its robustness to class imbalance. However, it is well known that the DSC loss is poorly calibrated...
Pharmacogenomics and the Yin/Yang actions of ginseng
Patrick Ying Kit Yue, Nai Ki Mak, Yuen Kit Cheng, Kar Wah Leung, Tzi Bun Ng, David Tai Ping Fan, Hin Wing Yeung, Ricky Ngok Shun Wong
Jun 16, 2011
In Chinese medicine, ginseng (Panax ginseng C.A. Meyer) has long been used as a general tonic or an adaptogen to promote longevity and enhance bodily functions. It has also been claimed to be effective in combating stress...
A high-performance UV photodetector with superior responsivity enabled by a synergistic photo/thermal enhancement of localized surface plasmon resonance
Luxia Zheng, Yang Yang, Chris R. Bowen, Lan Jiang, Zhan Shu, Yun He, Hongli Yang, Zongzhuo Xie, Taixu Lu, Feng Hu, Weiyou Yang
May 14, 2023
In this paper, we propose a new strategy to enhance the photoelectric performance of ultraviolet (UV) photodetectors by exploiting a synergistic photo-thermal effect which is induced by a localized surface plasmon resonance....
Fast 3D Indoor Scene Synthesis by Learning Spatial Relation Priors of Objects
We present a framework for fast synthesizing indoor scenes, given a room geometry and a list of objects with learnt priors.Unlike existing data-driven solutions, which often learn priors by co-occurrence analysis and...
3D Indoor Scene Synthesis Complete Spatial Randomness computational modeling Furniture Objects Arrangement Layout mathematical model OPTIMIZATION semantics Task analysis Three-dimensional displays /dk/atira/pure/subjectarea/asjc/1700/1712 name=Software /dk/atira/pure/subjectarea/asjc/1700/1711 name=Signal Processing /dk/atira/pure/subjectarea/asjc/1700/1707 name=Computer Vision and Pattern Recognition /dk/atira/pure/subjectarea/asjc/1700/1704 name=Computer Graphics and Computer-Aided Design
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