All posts by Lionel D'André

coronavirus: MOUSETRAPS AND PING-PONG BALLS DEMONSTRATE WHY SOCIAL DISTANCING WORKS

A video from the Ohio Department of Health shows a minefield of mousetraps and table tennis balls, row upon row, that turn into a predictable maelstrom of flying debris once a bouncing ball tumbles into view.

It’s also a metaphor for the menacing spread of the coronavirus, where just one person interacting with others can produce a chain reaction of devastating consequences.

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Chordify presents new beattracking algorithm

…This year we present our research concerning semi-automatic enhancement of beat tracking. This is the perfect challenge for us, because we’re always looking for ways to improve of our algorithm.   

A short explanation: to allow our users to change chords at the right moment we need an exact timestamp of the beat in an audio recording; and we do that by … exactly: tapping to the beat…

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A Gorgeous Video of evolving resistance to antibiotics

THIS TIME-LAPSE IS one of the most compelling—and unsettling—visualizations of evolution we’ve ever seen. The overhead footage depicts a strain of the gut bacterium E. coli evolving to be 1,000 times more resistant to an antibiotic in a matter of 11 days, starkly visualizing the speed with which diseases can adapt to the drugs we throw their way.

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Le covid-19 ou La covid-19

Covid est l’acronyme de corona virus disease, et les sigles et acronymes ont le genre du nom qui constitue le noyau du syntagme dont ils sont une abréviation. On dit ainsi la S.N.C.F. (Société nationale des chemins de fer français) parce que le noyau de ce groupe, société, est un nom féminin, mais le C.I.O. (Comité international olympique), parce que le noyau, comité, est un nom masculin. Quand ce syntagme est composé de mots étrangers, le même principe s’applique…

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NEUROLOGIE. Comment l’éducation modifie la structure du cerveau

Le réseau de milliards de neurones présent dans notre cerveau n’est pas “immobile”.

  • Pendant l’enfance, certaines connexions, moins utilisées, disparaissent tandis que d’autres fibres se renforcent en s’entourant de gaine de myéline.

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SPLEETER: UNMIXING MUSIC SOURCES TO RECOVER SEPARATE TRACKS

Interestingly, our brain is very good at isolating instruments. Just focus on one of the instrument of a track (say the lead vocal for instance) and you will be able to hear it quite distinctively from the others… The challenge is thus to approximate them the best we can, that is to say as close as possible to the originals without creating too much distortions…

After years, a lot of strategies have been explored, by dozens of brilliant research teams from all over the world… Listen to some examples here


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Mieux connaître les Neurones

Neurone
Schéma complet d’un neurone.

Statistiques

Le nombre total de neurones du cerveau humain est estimé de 86 à 100 milliards (1011).

Un neurone, ou une cellule nerveuse, est une cellule excitable constituant l’unité fonctionnelle de la base du système nerveux.

Les neurones assurent la transmission d’un signal bioélectrique appelé influx nerveux. Ils ont deux propriétés physiologiques : l’excitabilité, c’est-à-dire la capacité de répondre aux stimulations et de convertir celles-ci en impulsions nerveuses, et la conductivité, c’est-à-dire la capacité de transmettre les impulsions.

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Translation has long been a research focus for Facebook

With hundreds of languages used by people on our platforms and thousands more spoken around the world, developing powerful and flexible machine translation systems has long been a research focus for Facebook. Today, Facebook AI models achieved first place in several language tasks included in this year’s annual news translation competition, hosted by the Fourth Conference on Machine Translation (also known as WMT)…

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The First Electric Passenger Planes Could Be 50-Year-Old Canadian Seaplanes

The first battery-electric passenger planes in commercial service may turn out to be Canadian turboprops that date back to the 1950s and 1960s.

MagniX, a Redmond, Wash.-based company developing electric aircraft engines, has struck a deal with Harbour Air to be MagniX’s launch customer, aiming to convert the Vancouver-based airline’s 42 seaplanes into an all-electric fleet, the companies announced Tuesday.

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