Results 101 to 110 of about 4,987,074 (289)

Planetário da Universidade Federal de São João del-Rei (UFSJ): Divulgando astronomia no Campo das Vertentes desde 2016

Revista Brasileira de Extensão Universitária
Este trabalho apresenta os resultados de um programa de extensão voltado à divulgação da ciência e da astronomia por meio de um planetário. Desde sua inauguração, em 2016, até o final de 2024, o programa alcançou um público de 15.650 pessoas, por meio ...
Ketlyn Teixeira de Oliveira Silva, Daisy Andrews Pereira, Fernando Otávio Coelho, Alessandro Damásio Trani Gomes   +3 more
doaj   +1 more source

Semantic primitives and compositionality: An Annual Review of Information Science and Technology (ARIST) paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract The term semantic primitives refers to a set of basic, atomic concepts from which all other (compound) concepts are constructed. It presupposes the principle of compositionality—the idea that complex items or expressions can be formed by combining simpler constituents.
Birger Hjørland
wiley   +1 more source

Uncertainties in Historic Visual Double Star Measures—III Accurate Calibration Pairs

Astronomische Nachrichten, EarlyView.
ABSTRACT Based on space‐based positions and proper motions, we present accurate rectilinear elements for 857 double star pairs over the celestial sphere. These elements allow for the computation of precision ephemeris Position Angles and Separations of these pairs.
Roderick R. Letchford, Graeme L. White
wiley   +1 more source

Radial Velocity Monitoring and Analysis of Gaia Astrometry of Selected Intermediate Mass Stars to Constrain Their Multiplicity Status

Astronomische Nachrichten, EarlyView.
ABSTRACT We present new radial velocity measurements of 13 selected intermediate mass stars (2–6 M⊙). The measurements were performed between 29 April and 6 September 2024 at the University Observatory Jena using the échelle spectrograph FLECHAS. The radial velocity of eight stars was found to be constant during our spectroscopic monitoring, namely: 17
J. Bätz, M. Mugrauer, K.‐U. Michel, J. Reichert, A. Tschirschky, L. Pietsch, F. Edelmann, R. Neuhäuser   +7 more
wiley   +1 more source

Commissioning an Inexpensive Off‐The‐Shelf Spectrograph for Radial‐Velocity Studies

Astronomische Nachrichten, EarlyView.
ABSTRACT We present a way to set up an inexpensive out of the shelf spectrograph at a local observatory. Stability and resolution of the spectrograph are high enough for radial velocity determination of binary stars or determination of stellar characteristics. Even some exoplanets might be detectable via the radial velocity method.
Lukas Stock, Andreas Schrimpf
wiley   +1 more source

When Dihedral Angles Mask Denticity in Molecular Conductance

ChemPhysChem, EarlyView.
This study tests whether higher molecule–electrode denticity increases conductance in single‐molecule junctions. Using nonequilibrium Green's function technique in conjunction with density functional theory simulations and mechanically controlled break‐junction experiments on a tetradentate N‐heterohexacene, it is found that conductance depends mainly ...
Kevin Batzinger, Dylan Dyer, M. D. Hashan C. Peiris, Tarek H. El‐Assaad, Rashmi Yohani Amarakoon Arachchige, Sam LaMotte, Dominic V. McGrath, Oliver L.A. Monti, Manuel Smeu   +8 more
wiley   +1 more source

Machine Learning Approaches in Soft Matter Molecular Simulation and Materials Characterization: Challenges and Perspectives

ChemPlusChem, EarlyView.
Rigorous frameworks construction toward the development of science‐based machine learning (ML) schemes: invocation of statistical learning and data‐driven methods within the diverse materials science fields, from materials characterization to molecular modeling utilizing domain knowledge to facilitate fundamental understanding and scientific discovery.
Niki Vergadou, Vassilios Constantoudis
wiley   +1 more source

EFFECT OF 5E TEACHING MODEL ON PRIMARY SCHOOL PRE-SERVICE TEACHERS’ LEARNING ON SOME ASTRONOMY CONCEPTS [PDF]

, 2017
Çiğdem Şahin, Ümmü Gülsüm Durukan, Elif Arıkurt   +2 more
openalex   +1 more source

Orbital and eustatic control of basin hydrology during the first stage of the Messinian Salinity Crisis

The Depositional Record, EarlyView.
The paleo‐hydrology of the Sorbas Basin (SE Spain) and the wider Mediterranean region during the deposition of the Primary Lower Gypsum (PLG) stage of the Messinian Salinity Crisis, from ~5.97 to ~5.60 Ma, was affected by tectonics, precession‐forced climate oscillations, and eustatic sea‐level change.
Fernando Gázquez, Nicholas P. Evans, Thomas K. Bauska, Harold J. Bradbury, Alexandra V. Turchyn, María del Carmen Barroso, Alexander M. Piotrowski, José María Calaforra, David A. Hodell   +8 more
wiley   +1 more source

The Charles Sturt University Remote Telescope Project: Astronomy for Primary School Students [PDF]

, 2000
David McKinnon, Andrew Mainwaring
openalex   +1 more source