Results 11 to 20 of about 3,855,358 (269)
The first accurate parallax distance to a black hole [PDF]
Using astrometric VLBI observations, we have determined the parallax of the black hole X-ray binary V404 Cyg to be 0.418 +/- 0.024 milliarcseconds, corresponding to a distance of 2.39 +/- 0.14 kpc, significantly lower than the previously accepted value ...
Blaauw +32 more
core +10 more sources
Les MOOC et autres dispositifs de formation entièrement ou partiellement à distance ont souvent recours, notamment pour des raisons d'accessibilité, à la langue anglaise et à des formats médiatiques assez standardisés (tel le face camera). Toutefois, les
Mariana Fonseca Favre +2 more
doaj +1 more source
Ratio-of-Distance Rigidity Theory With Application to Similar Formation Control
This paper develops a ratio-of-distance (RoD) rigidity theory to study when a framework can be uniquely determined by a set of RoD constraints up to similar transformations (translation, rotation, scaling, and reflection).
Kun Cao +3 more
semanticscholar +1 more source
A distance of 13 Mpc resolves the claimed anomalies of the galaxy lacking dark matter [PDF]
The claimed detection of a diffuse galaxy lacking dark matter represents a possible challenge to our understanding of the properties of these galaxies and galaxy formation in general.
I. Trujillo +12 more
semanticscholar +1 more source
Large distance asymptotic behavior of the emptiness formation probability of the XXZ spin-1/2 Heisenberg chain [PDF]
Using its multiple integral representation, we compute the large distance asymptotic behavior of the emptiness formation probability of the XXZ spin-1/2 Heisenberg chain in the massless regime.Comment: LPENSL-TH-10, 8 ...
Boos H E +11 more
core +4 more sources
L’EOAD en Europe, mythe et réalités
Is Open and Distance Education the right solution for European education systems? The authors wonder whether American and European systems are compared too often.
Serge Pouts-Lajus +1 more
doaj +1 more source
Dirigé par France Lafleur, Jean-Marc Nolla et Ghislain Samson, l’ouvrage Évaluation des apprentissages en formation à distance : Enjeux, modalités et opportunités de formation en enseignement supérieur, composé de neuf chapitres, met de l’avant l ...
Naomie Fournier Dubé
doaj +1 more source
Flexibilité, accessibilité et individualisation
How to take advantage of Open and Distance Learning technical progress in order to reduce the effects of social exclusion? How to assert a strong cultural presence in the competitive field of multimedia products?
Sally O’Farrell
doaj +1 more source
Publié en 2022 dans la collection « Formation à distance | Distance learning » des Presses de l’Université du Québec, l’ouvrage collectif L’enseignement des mathématiques : une transition des cours en présentiel vers la formation à distance est sous la ...
Marie-Pier Forest
doaj +1 more source
Formation Shape Control Based on Distance Measurements Using Lie Bracket Approximations [PDF]
We study the problem of distance-based formation control in autonomous multi-agent systems in which only distance measurements are available. This means that the target formations as well as the sensed variables are both determined by distances.
Sun, Zhiyong, Suttner, Raik
core +2 more sources

