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Discrete diffusion models have achieved strong empirical performance in text and other symbolic domains, with masked (absorbing-rate) variants emerging as competitive alternatives to autoregressive models. Among existing samplers, the Euler…

Machine Learning · Computer Science 2026-02-27 Yuchen Liang , Zhiheng Tan , Ness Shroff , Yingbin Liang

One of the objectives of the NASA LWS Institute on Nowcasting of Atmospheric Drag for LEO Spacecraft was to investigate whether and how to increase the accuracy of atmospheric drag models by improving the quality of the solar forcing…

Solar and Stellar Astrophysics · Physics 2018-07-04 A. Vourlidas , S. Bruinsma

We perform 3D lithography simulations by using a finite-element solver. To proof applicability to real 3D problems we investigate DUV light propagation through a structure of size 9 microns times 4 microns times 65 nm. On this relatively…

Optics · Physics 2009-05-28 S. Burger , R. Köhle , L. Zschiedrich , H. Nguyen , F. Schmidt , R. März , C. Nölscher

NASA's Solar Dynamics Observatory (SDO) Extreme-ultraviolet Variability Experiment (EVE) has been making solar full-disk extreme ultraviolet (EUV) spectral measurements since 2010 over the spectral range of 6nm to 106nm with 0.1nm spectral…

The optical constants of ruthenium in the spectral range 8 nm to 23.75 nm with their corresponding uncertainties are derived from the reflectance of a sputtered ruthenium thin film in the Extreme Ultraviolet (EUV) spectral range measured…

High-energy radiation from the Sun governs the behavior of Earth's upper atmosphere and such radiation from any planet-hosting star can drive the long-term evolution of a planetary atmosphere. However, much of this radiation is unobservable…

Solar and Stellar Astrophysics · Physics 2021-04-14 Anthony L. Pineci , Peter Sadowski , Eric Gaidos , Xudong Sun

The random layer thickness variations can induce a great deformation of the experimental reflection of broadband extreme ultraviolet multilayer. In order to reduce this influence of random layer thickness fluctuations, the multiobjective…

Applied Physics · Physics 2018-10-17 Shang-qi Kuang , Jian-bo Wang , Hai-gui Yang , Tong-lin Huo , Hong-jun Zhou

Face masks are recommended to reduce the transmission of many viruses, especially SARS-CoV-2. Therefore, the automatic detection of whether there is a mask on the face, what type of mask is worn, and how it is worn is an important research…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Natalia Kowalczyk , Jacek Rumiński

Extreme Ultraviolet (EUV) waves have been found for about 15 years. However, significant controversy remains over their physical natures and origins. In this paper, we report an EUV wave that was accompanied by an X1.9 flare and a partial…

Solar and Stellar Astrophysics · Physics 2015-06-05 Yuandeng Shen , Yu Liu

Recovering high-quality 3D facial textures from single-view 2D images is a challenging task, especially under constraints of limited data and complex facial details such as makeup, wrinkles, and occlusions. In this paper, we introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Xingchao Yang , Takafumi Taketomi , Yuki Endo , Yoshihiro Kanamori

Self-diffraction is a non-collinear four-wave mixing technique well-known in optics. We explore self-diffraction in the extreme ultraviolet (EUV) range, taking advantage of intense femtosecond EUV pulses produced by a free electron laser.…

In the past years, EUV lithography scanner systems have entered High-Volume Manufacturing for state-of-the-art Integrated Circuits (IC), with critical dimensions down to 10 nm. This technology uses 13.5 nm EUV radiation, which is shaped and…

Deterministic and versatile approaches to sample preparation on nanoscopic scales are important in many fields including photonics, electronics, biology and material science. However, challenges exist in meeting many nanostructuring…

Ultrasound imaging is one of the most widely used diagnostic modalities, offering real-time, radiation-free assessment across diverse clinical domains. However, interpretation of ultrasound images remains challenging due to high noise…

Image and Video Processing · Electrical Eng. & Systems 2025-11-10 Youssef Megahed , Robin Ducharme , Aylin Erman , Mark Walker , Steven Hawken , Adrian D. C. Chan

We have investigated electromagnetically induced transparency in the spectrum of selective reflection at the interface of Rb atom vapors and a dielectric nanocell window. A nanocell with atomic vapor column thicknesses ranging from 150 to…

Atomic Physics · Physics 2024-06-25 Armen Sargsyan , Anahit Gogyan , David Sarkisyan

The enhancement of Er$^{3+}$-based up-conversion for photovoltaics in multilayer porous silicon photonic structures is considered theoretically and experimentally. Transfer matrix simulations are used to assess the increased photonic…

Optics · Physics 2012-09-06 Craig M. Johnson , Peter J. Reece , Gavin J. Conibeer

The X-ray and EUV emission of stars plays a key role in the loss and evolution of the atmospheres of their planets. The coronae of dwarf stars later than M6 appear to behave differently to those of earlier spectral types and are more X-ray…

Solar and Stellar Astrophysics · Physics 2020-05-06 Jeremy J. Drake , Vinay L. Kashyap , Bradford J. Wargelin , Scott J. Wolk

(abridged) The Extreme Ultraviolet Explorer (EUVE) satellite was employed in 1999 February to acquire phase-resolved EUV photometric and spectroscopic observations of the AM Her-type cataclysmic variable V834 Centauri. Although we do not…

Astrophysics · Physics 2007-05-23 Christopher W. Mauche

Nonlinear spectroscopy in the extreme ultraviolet (EUV) and soft x-ray spectral range offers the opportunity for element selective probing of ultrafast dynamics using core-valence transitions (Mukamel et al., Acc. Chem. Res. 42, 553…

We present observations of the diffraction, refraction, and reflection of a global extreme-ultraviolet (EUV) wave propagating in the solar corona. These intriguing phenomena are observed when the wave interacts with two remote active…

Solar and Stellar Astrophysics · Physics 2013-08-13 Yuandeng Shen , Yu Liu , Jiangtao Su , Hui Li , Ruijuan Zhao , Zhanjun Tian , Kiyoshi Ichimoto , Kazunari Shibata