Results 41 to 50 of about 12,770 (238)

Fitting a function to time-dependent ensemble averaged data

Scientific Reports, 2018
Time-dependent ensemble averages, i.e., trajectory-based averages of some observable, are of importance in many fields of science. A crucial objective when interpreting such data is to fit these averages (for instance, squared displacements) with a ...
Karl Fogelmark, Michael A. Lomholt, Anders Irbäck, Tobias Ambjörnsson   +3 more
doaj   +1 more source

Computer Algebra Manipulations in Astronomy [PDF]

, 2004
The specialized Poisson Series Processors (PSPs) are proposed. They are a typical software for the implementation of analytical algorithms of celestial mechanics. The PSPs are designed for manipulating long Poisson (polynomial-trigonometric) and echeloned series with the rational, floating-point or arbitrary length (infinite precision) coefficients and
openaire   +1 more source

Memristive Physical Reservoir Computing

Advanced Science, EarlyView.
Memristors’ nonlinear dynamics and input‐dependent memory effects make them ideal candidates for high‐performance physical reservoir computing (RC). Based on their conductance modulation, memristors can be classified as electronic or optoelectronic types.
Dian Jiao, Ziyuan Wang, Jingrui Wang, Li Zhang, Xianhua Wei, Lingxiang Hu, Zongxiao Li, Athanasios V. Vasilakos, Zhizhen Ye, Fei Zhuge   +9 more
wiley   +1 more source

RAMSES-yOMP: Performance Optimizations for the Astrophysical Hydrodynamic Simulation Code RAMSES

The Astrophysical Journal
Developing an efficient code for large, multiscale astrophysical simulations is crucial in preparing for the upcoming era of exascale computing. RAMSES is an astrophysical simulation code that employs parallel processing based on the message-passing ...
San Han, Yohan Dubois, Jaehyun Lee, Juhan Kim, Corentin Cadiou, Sukyoung K. Yi   +5 more
doaj   +1 more source

Accelerated and Energy-Efficient Galaxy Detection: Integrating Deep Learning with Tensor Methods for Astronomical Imaging

Universe
Addressing the astronomical challenges posed by the interplay of data volume, AI sophistication, and energy consumption is crucial for the future of astronomy. As astronomical surveys continue to produce vast amounts of data, the computational and energy
Humberto Farias, Guillermo Damke, Mauricio Solar, Marcelo Jaque Arancibia   +3 more
doaj   +1 more source

Computer as a Tool in Astronomy Teaching [PDF]

International Astronomical Union Colloquium, 1998
As yet, astronomy, the most ancient of all sciences, surprisingly is not included in French secondary science classes. Recent trends in favour of a more attractive and motivating scientific education have taken it up.Astronomy has, at all times, been arising curiosity, and now provides a privileged field to scientific approach :•Observation of the ...
openaire   +1 more source

Helical Electron Beam Micro‐Bunching by High‐Order Modes in a Micro‐Plasma Waveguide

Advanced Science, EarlyView.
ABSTRACT Electron acceleration by a high‐power Laguerre‐Gaussian pulse in a micro‐plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into the vacuum core and accelerated by the longitudinal field of the waveguide mode.
Xingju Guo, Longqing Yi
wiley   +1 more source

Multisegment Overlap–Save Method for Coherent Dedispersion

The Astronomical Journal
Dispersion occurs due to the interstellar medium, which functions as a prism and causes different time delays in radio waves of varying frequencies. The coherent dedispersion technique is often used in pulsar and fast radio burst observations to mitigate
Chenye Zhou, Qiao Meng, Wei Liu, Shaocong Guo, Hailong Zhang, Gaojing Li   +5 more
doaj   +1 more source

Low‐Power Control Of Resistance Switching Transitions in First‐Order Memristors

Advanced Electronic Materials, EarlyView.
Joule losses are a serious concern in modern integrated circuit design. In this regard, minimizing the energy necessary for programming memristors should be handled with care. This manuscript presents an optimal control framework, allowing to derive energy‐efficient programming voltage protocols for resistance switching devices. Following this approach,
Valeriy A. Slipko, Alon Ascoli, Fernando Corinto, Yuriy V. Pershin   +3 more
wiley   +1 more source

Astrolabe: Curating, Linking, and Computing Astronomy’s Dark Data [PDF]

The Astrophysical Journal Supplement Series, 2018
Abstract Where appropriate repositories are not available to support all relevant astronomical data products, data can fall into darkness: unseen and unavailable for future reference and reuse. Some data in this category are legacy or old data, but newer data sets are also often uncurated and could remain dark.
P. Bryan Heidorn, Gretchen R. Stahlman, Julie Steffen   +2 more
openaire   +2 more sources