Results 41 to 50 of about 102,930 (210)

Dynamics of galaxies with triaxial haloes [PDF]

open access: yesNew Astronomy, 1998
We study the stability of trajectories near the disk plane of galaxy models with a triaxial dark matter halo component. We also examine the effect of weak discreteness noise, rapidly rotating bar perturbations and weak dissipation on these trajectories.
Björn Haßler   +3 more
openaire   +3 more sources

Artificial Intelligences: A Bridge Toward Diverse Intelligence and Humanity's Future

open access: yesAdvanced Intelligent Systems, EarlyView.
Many discussions of artificial intelligence fail to address deeper questions being raised by advances in developmental biology, neuroscience, bioengineering, and philosophy of mind. Novel beings, including technologically and biologically augmented humans, engineered life forms, hybrots, and others, require tools of the emerging field of diverse ...
Michael Levin
wiley   +1 more source

AI in Neurology: Everything, Everywhere, all at Once PART 2: Speech, Sentience, Scruples, and Service

open access: yesAnnals of Neurology, EarlyView.
Artificial intelligence (AI) applications are finding use in real‐world neurological settings. Whereas part 1 of this 3‐part review series focused on the birth of AI and its foundational principles, this part 2 review shifts gears to explore more practical aspects of neurological care.
Matthew Rizzo
wiley   +1 more source

Gas Dynamics in the Barred Seyfert Galaxy NGC4151 - II. High Resolution HI Study

open access: yes, 1998
We present sensitive, high angular resolution (6" x 5") 21-cm observations of the neutral hydrogen in the nearby barred Seyfert galaxy, NGC4151. These HI observations, obtained using the VLA in B-configuration, are the highest resolution to date of this ...
A. Pedlar   +4 more
core   +1 more source

On dynamical models for radio galaxies [PDF]

open access: yesNew Astronomy Reviews, 2002
The tailed radio galaxies that have been called ``Type I'' are not a uniform set. To study their dynamics, we have used the Ledlow-Owen data set, which provides a new sample of 250 radio galaxies in nearby Abell clusters. These sources divide into two clear categories based on their radio morphology.
Frazer N. Owen   +4 more
openaire   +3 more sources

Improving computer vision for plant pathology through advanced training techniques

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise This study investigates advanced training techniques to improve the performance of convolutional neural networks for disease detection in cocoa, Theobroma cacao. Methods Despite recent stagnation in accuracy improvements in computer vision for image classification, our research demonstrates significant advancements in performance ...
Jamie R. Sykes   +2 more
wiley   +1 more source

Unstable Galaxy Models

open access: yes, 2013
The dynamics of collisionless galaxy can be described by the Vlasov-Poisson system. By the Jean's theorem, all the spherically symmetric steady galaxy models are given by a distribution of {\Phi}(E,L), where E is the particle energy and L the angular ...
Guo, Yan   +3 more
core   +1 more source

Dynamics of the Galaxy's Satellites

open access: yes, 2000
7 pages to appear in 'Star2000 -- Dynamics of Star Clusters and the Milky Way' eds R. Spurzem & R.
openaire   +4 more sources

Dynamical models and Galaxy surveys [PDF]

open access: yesProceedings of the International Astronomical Union, 2013
AbstractEquilibrium dynamical models are essential tools for extracting science from surveys of our Galaxy. We show how models can be tested with data from a survey before the survey's selection function has been determined. We illustrate the application of this method by presenting some results for the RAVE survey.
Binney, J, Sanders, J
openaire   +5 more sources

A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber   +3 more
wiley   +1 more source

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