Results 91 to 100 of about 2,005,952 (304)

The dark matter assembly of the Local Group in constrained cosmological simulations of a Λ cold dark matter universe [PDF]

open access: yes, 2011
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2011 RAS © 2011 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Anatoly Klypin   +13 more
core   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

open access: yesAdvanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino   +7 more
wiley   +1 more source

Extending the geological calibration of the geological time scale

open access: yes, 2002
This thesis arises from the fact that changes in the geometry of the Earth-Sun system, due to the gravitational interaction among the planets, cause quasi-cyclic climatic variations that are imprinted in the geological record.A speech-recognition method ...
Pälike, Heiko
core   +3 more sources

The crux of astronomical alignment in Neolithic Malta: Using 3D simulation to produce new data

open access: yesDigital Applications in Archaeology and Cultural Heritage, 2022
Like many prehistoric monuments, the Neolithic Temples of Malta have been the subject of astronomical studies, aimed at identifying possible alignments with cosmological events. The orientations of several sites have been suggested as evidence of an interest in the movement of the sun, moon, and stars, and of the importance of certain days such as the ...
openaire   +4 more sources

Report on the organization of the International Astronomical Union,

open access: yes, 1920
Contains "Statutes of convention" organizing the International Astronomical Union, and reports of committees of the American Section of the International Astronomical Union."Published in the Proceedings of the National Academy of Sciences, June, 1920 ...
International Astronomical Union. American Section.
core  

A DETERMINATION OF DARK MATTER BISPECTRUM WITH A LARGE SET OF N-BODY SIMULATIONS

open access: yes, 2009
We use a set of numerical N-body simulations to study the large-scale behavior of the reduced bispectrum of dark matter and compare the results with the second-order perturbation theory and the halo models for different halo mass functions.
Guo, H., Jing, Y. P.
core   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

open access: yesAdvanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown   +3 more
wiley   +1 more source

The SPHEREx Sky Simulator: Science Data Modeling for the First All-sky Near-infrared Spectral Survey

open access: yesThe Astrophysical Journal Supplement Series
We describe the SPHEREx Sky Simulator (henceforth the Simulator), a software tool designed to model science data for NASA’s SPHEREx mission that will carry out a series of all-sky spectrophotometric surveys at ∼6″ spatial resolution in 102 spectral ...
Brendan P. Crill   +32 more
doaj   +1 more source

Publications of the Astronomical and Astrophysical Society of America.

open access: yes, 1910
Vol. 2 includes abstracts of papers read at the Society's conferences, 1910-1913; and "Report of Comet committee, 1909-1913, with index catalog of all photographs of Halley's comet reported to the committee."Vol.
American Astronomical Society.
core  

Symmetry‐Driven Unconventional Magnetoelectric Coupling in Perovskite Altermagnets: From Bulk to the Two‐Dimensional Limit

open access: yesAdvanced Science, EarlyView.
The symmetry‐driven coexistence of altermagnetism and (anti)ferroelectricity in perovskites shows a strong dimensional dependence. Upon reducing the system from bulk to the two‐dimensional limit, only C‐type antiferromagnetic order retains ferroelectrically switchable altermagnetism, whereas A‐ and G‐type orders become conventional antiferromagnets ...
Zhou Cui   +6 more
wiley   +1 more source

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