Results 61 to 70 of about 14,211,114 (251)

Simulating Image Coaddition with the Nancy Grace Roman Space Telescope. III. Software Improvements and New Linear Algebra Strategies

The Astrophysical Journal Supplement Series
The Nancy Grace Roman Space Telescope will implement a devoted weak gravitational lensing program with its High Latitude Wide Area Survey. For cosmological purposes, a critical step in Roman image processing is to combine dithered undersampled images ...
Kaili Cao, Christopher M. Hirata, Katherine Laliotis, Masaya Yamamoto, Emily Macbeth, M. A. Troxel   +5 more
doaj   +1 more source

Light‐Controlled Localized Delamination and Blistering of Azobenzene‐Containing Polymer Thin Films in an Aqueous Environment

Advanced Materials Interfaces, EarlyView.
When exposed to light of a defined wavelength, the photoisomerization of azobenzene chromophores leads to polymer reorientation, generating stresses that result in solvent‐facilitated localized delamination of the film from the substrate. Additionally, blisters that form spontaneously when exposed to an aqueous environment can be manipulated via ...
James Robert Benson, Jonas Strobelt, Nino Lomadze, Svetlana Santer, Stephan Eickelmann   +4 more
wiley   +1 more source

Simulating Image Coaddition with the Nancy Grace Roman Space Telescope. IV. Hyperparameter Optimization and Experimental Features

The Astrophysical Journal
For weak gravitational lensing cosmology with the forthcoming Nancy Grace Roman Space Telescope, image coaddition (or construction of oversampled images from undersampled ones) is a critical step in the image processing pipeline.
Kaili Cao, Christopher M. Hirata, Katherine Laliotis, Masaya Yamamoto, Emily Macbeth, M. A. Troxel, (Roman HLIS Cosmology PIT)   +6 more
doaj   +1 more source

PFMGAN: A Generative Adversarial Network with Physics Fusion for DTM Generation from Martian Monocular Images

Remote Sensing
High-resolution digital terrain models (DTMs) are essential for Martian scientific exploration and engineering missions. However, traditional methods for Martian DTM generation are constrained by limitations in coverage and production efficiency, while ...
Ziyang Zou, Yi Zhou, Chao Li, Zhibao Dong   +3 more
doaj   +1 more source

Astronomical Image Acquisition Using an Improved Track and Accumulate Method

IEEE Access, 2017
“Track and Accumulate” (T&A) is an alternative astronomical image capture method where exposures are combined during imaging by aligning on a reference star.
Seng Cheong Loke
doaj   +1 more source

Culinary Chemistry as a Platform for Interfacial Materials Design

Advanced Materials Interfaces, EarlyView.
Culinary processes control interfaces through heating, shear, gelation, and molecular transport. This Review connects selected gastronomic examples with food‐derived nanomaterials, plasmonic sensing, anthocyanin photovoltaics, and intelligent packaging. Original agar‐based plasmonic films illustrate the proposed translation.
Josep Moreno, I. Brian Becerril‐Castro, Irene Calderon‐Gonzalez, Jaslyn Ru Ting Chen, Zhiming Wang, Alexander O. Govorov, José Manuel Romo‐Herrera, Neus Feliu, Wolfgang J. Parak, Miguel A. Correa‐Duarte, In Yee Phang, Xing Yi Ling, Ramón A. Alvarez‐Puebla   +12 more
wiley   +1 more source

Linear Image Regridding and Coaddition with Oversampled Point Spread Functions: Lessons from 1D

The Astronomical Journal
Image regridding and coaddition have a wide range of applications in astronomical observations. Image Combination (I mcom) , an algorithm that provides control over point-spread function (PSF) and noise in coadded images, has been found to meet the ...
Kaili Cao, Roman HLIS Cosmology PIT
doaj   +1 more source

Teaching astronomy and astrophysics with Hands-On-Universe and SalsaJ: stars, planets, exoplanets and dark matter

, 2011
How can teachers and researchers contribute to a new world-wide way to teach astronomy ? The Hands-On-Universe group proposes multi-media tools, from remote telescopes to image processing, inspired by the most recent research activities in astronomy and ...
Faye, Michel, Faye, Suzanne
core  

Hierarchically Wrinkled Silver Ink as a Platform for Fully Integrated Stretchable Electronic Systems

Advanced Materials Technologies, EarlyView.
Silver Hierarchical Responsive ink (SHRink), a universal approach for the fabrication of highly stretchable interconnects, wirings, and skin‐interfaced electrodes, is realized through low‐cost, scalable spray‐printing and transfer‐printing. The SHRink demonstrates high electrical conductivity (1.2E04 S cm−1) and large stretchability (235% max fracture ...
Junye Li, Hao Wang, Xinlei Chen, Mehmet Senel, Patrick Rwei, Sara Marmarchi, David Clymer, Blossom Sundarii Hak‐Khem, Nhi Nguyen, Chengyang Qian, Matt Thomson, Michelle Khine   +11 more
wiley   +1 more source

Galaxy–Galaxy Strong Lensing with U-Net (GGSL-UNet). I. Extracting Two-dimensional Information from Multiband Images in Ground and Space Observations

The Astrophysical Journal Supplement Series
We present a novel deep learning method to separately extract the two-dimensional flux information of the foreground galaxy (deflector) and background system (source) of galaxy–galaxy strong-lensing events using U-Net (GGSL-UNet for short). In particular,
Fucheng Zhong, Ruibiao Luo, Nicola R. Napolitano, Crescenzo Tortora, Rui Li, Xincheng Zhu, Valerio Busillo, L. V. E. Koopmans, Giuseppe Longo   +8 more
doaj   +1 more source