9,655 research outputs found
A Phenomenological Expression for Deuteron Electromagnetic Form Factors Based on Perturbative QCD Predictions
For deuteron electromagnetic form factors,perturbative QCD(pQCD) predicts
that becomes the dominate helicity amplitude and that
and are suppressed by factors and
at large ,respectively. We try to discuss the
higher order corrections beyond the pQCD asymptotic predictions by
interpolating an analytical form to the intermediate energy region. From
fitting the data,our results show that the helicity-zero to zero matrix element
dominates the gross structure function in both of the
large and intermediate energy regions; it is a good approximation for
to ignore the higher order contributions and the higher order
corrections to should be taken into account due to sizeable
contributions in the intermediate energy region.Comment: 9 pages,3 figure
Patch-based Progressive 3D Point Set Upsampling
We present a detail-driven deep neural network for point set upsampling. A
high-resolution point set is essential for point-based rendering and surface
reconstruction. Inspired by the recent success of neural image super-resolution
techniques, we progressively train a cascade of patch-based upsampling networks
on different levels of detail end-to-end. We propose a series of architectural
design contributions that lead to a substantial performance boost. The effect
of each technical contribution is demonstrated in an ablation study.
Qualitative and quantitative experiments show that our method significantly
outperforms the state-of-the-art learning-based and optimazation-based
approaches, both in terms of handling low-resolution inputs and revealing
high-fidelity details.Comment: accepted to cvpr2019, code available at https://github.com/yifita/P3
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