Results 81 to 90 of about 43,263 (189)

Quelques faits concernant les organismes génétiquement modifiés produits et exploités jusqu'ici

, 2007
International audienceEssayer « d’aller plus nettement au fond des choses, de clarifier tenants et aboutissants, et d’inciter au débat », disait Patrick Legrand dans son édito du n° 531. L’article qui suit s’inscrit parfaitement dans cette nouvelle ligne
Dron, Dominique
core   +1 more source

Numerical indications on the semiclassical limit of the flipped vertex

, 2007
We introduce a technique for testing the semiclassical limit of a quantum gravity vertex amplitude. The technique is based on the propagation of a semiclassical wave packet. We apply this technique to the newly introduced "flipped" vertex in loop quantum
Alexandrov S, Ashtekar A, Ashtekar A, Baez J C, Baez J C, Bianchi E, Bianchi E Modesto L, Carlo Rovelli, Cherrington J W, Christensen J D, Christensen J D, Christensen J D Livine E R Speziale S, Claudio Perini, Elena Magliaro, Engle J Livine E Pereira R Rovelli C, Engle J Pereira R Rovelli C, Freidel L Krasnov K, Khavkine I, Khavkine I, Khavkine I Christensen J D, Livine E R, Livine E Speziale S, Livine E Speziale S, Pereira R, Perez A, Rovelli C, Rovelli C, Rovelli C, Rovelli C, Speziale S, Thiemann T   +30 more
core   +2 more sources

Teaching crowds: Learning and social media

Journal of Open, Flexible and Distance Learning, 2015
In Teaching crowds: Learning and social media, Jon Dron and Terry Anderson examine the critical questions and emerging trends associated with the role of social software in the online learning environment.
Evelyn Frances Lewis
doaj   +2 more sources

Segmentación foliar en sistemas de cultivo de banano: aplicaciones del flujo de trabajo fotogramétrico y teledetección mediante imágenes multiespectrales de aeronaves no tripuladas (UAS)

Ciencia e Ingeniería Neogranadina
Este estudio presenta una metodología para lograr la segmentación foliar en sistemas de producción de cultivos de banano, utilizando imágenes multiespectrales provenientes de una aeronave no tripulada (UAS, por sus siglas en inglés), procesamiento ...
Jairo Rene Escobar Villanueva, Luis Miguel Torres Ustate, Miguel Angel Gutiérrez Estrada, Martha Ligia Castellanos Martínez   +3 more
doaj   +1 more source

On volumes of hyperideal tetrahedra with constrained edge lengths

, 2019
Hyperideal tetrahedra are the fundamental building blocks of hyperbolic 3-manifolds with geodesic boundary. The study of their geometric properties (in particular, of their volume) has applications also in other areas of low-dimensional topology, like ...
Frigerio, Roberto, Moraschini, Marco
core   +1 more source

Análisis comparativo de tecnologías sustitutivas para la medición del potencial eólico en las instalaciones del Instituto Tecnológico Universitario Guatemala Sur

Ciencia, Tecnología y Salud
La presente investigación tiene como objetivo el análisis comparativo de tecnologías sustitutivas para la medición del potencial eólico en las instalaciones del Instituto Tecnológico Universitario Guatemala Sur.
Sergio Alejandro López Rodríguez
doaj   +1 more source

Technology, Teaching, and the Many Distances of Distance Learning

Journal of Open, Flexible and Distance Learning, 2023
The “distance” in “distance learning”, however it is defined, normally refers to a gap between a learner and their teacher(s), typically in a formal context. In this paper I take a slightly different view.
Jon Dron
doaj  

Soft is hard and hard is easy: learning technologies and social media

Formare, 2013
Questo articolo riguarda principalmente la natura delle tecnologie per apprendere, con una particolare attenzione ai social media. Muovendo dalla definizione fornita da W.
Jon Dron
doaj   +1 more source

Experimental comparison between a counter-rotating axial-flow fan and a conventional rotor-stator stage [PDF]

, 2013
Based on the requirement of energy consumption level and weight and dimension restriction, compact axial machines are highly demanded in many industrial fields.
BAKIR, Farid, RAVELET, Florent, WANG, Juan   +2 more
core   +3 more sources

Savremeno naoružanje i vojna oprema za broj 4-2023

Vojnotehnički Glasnik, 2023
Najveći francuski dron; Ruski Ohotnik u operativnoj upotrebi; Unapređena verzija helikoptera Ka-52M u Ukrajini.
Dragan M. Vučković
doaj