3,203 research outputs found
Hyperspectral Image Super-Resolution Using Optimization and DCNN-Based Methods
Reconstructing a high-resolution (HR) hyperspectral (HS) image from the observed low-resolution (LR) hyperspectral image or a high-resolution multispectral (RGB) image obtained using the exiting imaging cameras is an important research topic for capturing comprehensive scene information in both spatial and spectral domains. The HR-HS hyperspectral image reconstruction mainly consists of two research strategies: optimization-based and the deep convolutional neural network-based learning methods. The optimization-based approaches estimate HR-HS image via minimizing the reconstruction errors of the available low-resolution hyperspectral and high-resolution multispectral images with different constrained prior knowledge such as representation sparsity, spectral physical properties, spatial smoothness, and so on. Recently, deep convolutional neural network (DCNN) has been applied to resolution enhancement of natural images and is proven to achieve promising performance. This chapter provides a comprehensive description of not only the conventional optimization-based methods but also the recently investigated DCNN-based learning methods for HS image super-resolution, which mainly include spectral reconstruction CNN and spatial and spectral fusion CNN. Experiment results on benchmark datasets have been shown for validating effectiveness of HS image super-resolution in both quantitative values and visual effect
Charm-strange baryon strong decays in a chiral quark model
The strong decays of charm-strange baryons up to N=2 shell are studied in a
chiral quark model. The theoretical predictions for the well determined
charm-strange baryons, , and , are in
good agreement with the experimental data. This model is also extended to
analyze the strong decays of the other newly observed charm-strange baryons
, , , and .
Our predictions are given as follows. (i) might be the first
-wave excitation of with , favors the $|\Xi_c'\
^2P_\lambda 1/2^->|\Xi_c'\ ^4P_\lambda 1/2^->\Xi_c(2980)P|\Xi_c'\ ^2P_\rho 1/2^->|\Xi_c'\ ^2P_\rho 3/2^->\Xi_c(2980)\Lambda_c^+\bar{K}\pi|\Xi_c'\ ^2P_\rho
1/2^->m\simeq 2.97\Xi_c^*(2645)\pi|\Xi_c'\ ^2P_\rho 3/2^->\Xi_c(3080)|\Xi_c\ S_{\rho\rho} 1/2^+>\Xi_c\Xi_c(3055)D\Xi_cJ^P=3/2^+|\Xi_c\
^2D_{\lambda\lambda} 3/2^+>\Xi_c(3123)|\Xi_c'\ ^4D_{\lambda\lambda} 3/2^+>|\Xi_c'\ ^4D_{\lambda\lambda} 5/2^+>|\Xi_c\ ^2D_{\rho\rho} 5/2^+>\Sigma_b^{\pm}\Sigma_b^{*\pm}\Xi_b^*$, which are in good agreement with the recent observations as well.Comment: 15 pages, 9 figure
Zinc 2-((2-(benzoimidazol-2-yl)quinolin-8-ylimino)methyl)phenolates : synthesis, characterization and photoluminescence behavior
A series of 2-(2-(1H-benzoimidazol-2-yl)quinolin-8-yliminomethyl)phenol derivatives and their zinc complexes (C1 – C5) were synthesized and fully characterized. The molecular structure of the representative complex C2 was determined by single crystal X-ray diffraction, which revealed that the zinc was five-coordinated with the tetra-dentate ligand and a methanol bound to the metal afford a distorted square-pyramidal geometry. The UV-Vis absorption and fluorescence spectra of the organic compounds and their zinc complexes were measured and investigated in various solvents such as methanol, THF, dichloromethane, and toluene; significant influences by solvents were observed on their luminescent properties; red-shifts for the zinc complexes were clearly observed in comparisons to the free organic compounds
(2E,4E)-2-Cyano-5-dipropylÂamino-N,N-dimethylÂpenta-2,4-dienamide
In the title compound, C14H23N3O, the n-propyl group is disordered over two orientations with an occupancy ratio of 0.778 (3):0.222 (3). In the crystal, molÂecules are linked by pairs of weak C—H⋯O interÂactions into inversion dimers with an R
2
2(14) graph-set motif
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