Results 71 to 80 of about 1,854,503 (293)

UV-to-optical insights into the black hole star model in little red dots

open access: yesAstronomy & Astrophysics
Little red dots (LRDs) are a heterogeneous class of objects, and several scenarios have been proposed for their physical nature and evolution. While these theories have been tested on individual LRDs using limited spectral features, a systematic Bayesian
Mérida Rosa M.   +4 more
doaj   +1 more source

A Single Volatile VO2 Memristor Enabling Neuromorphic Perception, Learning, and Computing

open access: yesAdvanced Electronic Materials, EarlyView.
A single volatile VO2 memristor fabricated via atomic layer deposition is demonstrated as a multifunctional neuromorphic device enabled by intrinsic threshold‐switching dynamics. The device reproduces neuron‐like integration and firing, short‐timescale associative learning, temporal ECG pattern classification, and nociceptive responses to electrical ...
Bingkai Ding   +7 more
wiley   +1 more source

Thermal Radiation Transport with Tensor Trains

open access: yesThe Astrophysical Journal
We present a novel tensor network algorithm to solve the time-dependent, gray thermal radiation transport equation. The method invokes a tensor train (TT) decomposition for the specific intensity.
Alex A. Gorodetsky   +6 more
doaj   +1 more source

Testing the black hole star model: A UV-to-optical spectral fitting of The Cliff

open access: yesAstronomy & Astrophysics
In the black hole star (BH*) framework, the characteristic V-shaped spectral energy distribution of little red dots (LRDs) is produced by an accreting BH embedded in a dense neutral-gas envelope with a near-unity covering factor.
Mérida Rosa M.   +4 more
doaj   +1 more source

Computational Intelligence in Astronomy – A Win-Win Situation [PDF]

open access: yes, 2012
Large archives of astronomical data (images, spectra and catalogues of derived parameters) are being assembled worldwide as part of the Virtual Observatory project. In order for such massive heterogeneous data collections to be of use to astronomers, development of Computational Intelligence techniques that would combine modern machine learning with ...
Peter Tiño, Somak Raychaudhury
openaire   +2 more sources

Covalently Locked Donor–Acceptor Block Copolymer Nanoparticles Enable Efficient, Stable and Reproducible Photocatalytic Hydrogen Evolution

open access: yesAdvanced Energy Materials, EarlyView.
To overcome the efficiency–stability trade‐off of traditional donor:acceptor blends, covalently locked all‐conjugated block copolymer nanoparticles are developed for solar hydrogen production. This strategy achieves an outstanding HER rate exceeding 120 mmol cm−2 g−1 h−1, alongside exceptional operational stability (95% retention after 96 h) and high ...
Alexandre Holmes   +14 more
wiley   +1 more source

Fast microdosimetry algorithms in particle therapy: Benchmark and applicability guidelines [PDF]

open access: yesPrecis Radiat Oncol
Precision Radiation Oncology, EarlyView.
Cartechini G, Missiaggia M, Cordoni F.
europepmc   +2 more sources

Large Language Model‐Based Chatbots in Higher Education

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
The use of large language models (LLMs) in higher education can facilitate personalized learning experiences, advance asynchronized learning, and support instructors, students, and researchers across diverse fields. The development of regulations and guidelines that address ethical and legal issues is essential to ensure safe and responsible adaptation
Defne Yigci   +4 more
wiley   +1 more source

Multigroup Thermal Radiation Transport with Tensor Trains

open access: yesThe Astrophysical Journal
We investigate the application of tensor-train (TT) algorithms to multigroup thermal radiation transport (i.e., photon radiation transport). The TT framework enables simulations at discretizations that might otherwise be computationally infeasible on ...
Aditya S. Deshpande   +6 more
doaj   +1 more source

Some Statistical and Computational Challenges, and Opportunities in Astronomy

open access: yesStatistical Science, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Babu, G. Jogesh, Djorgovski, S. George
openaire   +3 more sources

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