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Archivo del Autor: Belen De Leon

El 'Whatsapp' chino censura conversaciones privadas en tiempo real

En China es casi imposible vivir sin WeChat, una ‘app’ de mensajería que integra funciones como las de Uber y Facebook. Una investigación acaba de descubrir sus mecanismos para censurar automáticamente imágenes y texto relacionados con asuntos de los que su Gobierno no quiere que se hable
Source: MIT

China podría liderar la investigación en IA en solo dos años

Un análisis sobre el número  y la calidad de las publicaciones científicas sobre inteligencia artificial sugiere que el gigante asiático dominará el panorama mundial en 2021, arrebatándole el primer puesto a EE. UU., que no deja de reducir su apoyo al avance de la ciencia
Source: MIT

La pelea mundial por acceder al espectro de radiofrecuencia espacial

Cada vez más empresas y países quieren lanzar satélites a la órbita baja terrestre, pero la franja disponible para operarlos y comunicarse con ellos es finita, lo que está generando una batalla competitiva y regulatoria en la que los más poderosos podrían resultar favorecidos (como siempre)
Source: MIT

Now We Know How the Zombie Ant Gets Its Bite

Scientists solve part of the mystery of how a murderous fungus orders an ant to bite onto a twig, sealing its fate.
Source: Wired

Elon's Brain Computer, Big Tech's Big Day in Congress, and More News

Catch up on the most important news from today in two minutes or less.
Source: Wired

SpaceX’s ‘Starhopper’ bursts into flames during static fire test

SpaceX’s test vehicle, a small-scale demonstration craft for some Starship components, caught fire after what appears to be a fuel leak or dump following an otherwise successful static fire test last night. It’s not clear why the craft suddenly burst into flames, or whether it was seriously or even superficially damaged.

The “Starhopper,” as SpaceX has been calling it, is a much smaller-scale version of the Starship craft the company has in development, meant to test them out in a live-fire environment and even perform short flights called hops — hence the name. It’s being assembled and operated at SpaceX’s facilities in Boca Chica, Texas.

The big shiny craft looks a bit like a toy, but it’s a functioning rocket and it was planned that this week it would do an untethered hovering flight at some 20 meters, a step above the short tethered flights it has already accomplished. But last night’s test firing of the engines seems to have produced an anomaly.

hopper fire

As captured by several in the SpaceX community, the static fire started and stopped, but flames continued to burn around the base of the engines. A stream of liquid (very likely water) is directed toward it, at which point the whole rocket appears to ignite in an impressive fireball — then does it again a few seconds later. You can see the whole process (in 4K no less) in Everyday Astronaut’s video:

It’s unclear at this point what the cause of the fireball was, and whether it was in any part intentional. What’s certain is that this is not how previous test fires have gone, and generally speaking you don’t want your rocket to be on fire, even if it is highly heat-resistant.

Some have speculated that there was a fuel dump following the tests that produced lighter-than-air vapors, which rose and surrounded the rocket. The water jet may have caused the small fire to ignite the vapor, producing the fireball. I’ve asked SpaceX for any information they can share.

Images taken the next day don’t show a molten pile of slag, and in fact the vehicle doesn’t look any worse for wear on the outside. But while that’s testament to the test vehicle’s durability and stainless steel skin, it doesn’t mean there’s nothing wrong inside.

Anything unexpected happening during a test like this is reason to abort and reassess, so it won’t be a surprise if we hear that Starhopper tests have been indefinitely delayed. LabPadre, who took another video of the event, noted on Twitter that the local authorities told him SpaceX withdrew all road and beach closures, so testing is apparently off for now.

I’ll update this story if and when SpaceX provides further information on the event.


Source: TechCrunch

Instagram will now hide likes in 6 more countries

Would the internet be a better place if we all paid a little less attention to fake internet points? Instagram is still trying to figure it out.

Just a few months back, Instagram started testing a design tweak that would no longer show the total number of “likes” other users’ posts had received. You could still see everyone that liked your photos and videos — but anyone else’s stuff? Don’t worry about it.

While the company hasn’t said much about how the tests are going so far, it seems they’re going well enough to expand them. Initially rolled out in just Canada, it’ll roll out to users in six more countries starting today:

  • Ireland
  • Italy
  • Japan
  • Brazil
  • Australia
  • New Zealand

Curiously, some users in Canada (the first country where hidden likes were tested) reported yesterday that likes had returned to their feed. Instagram confirmed to us that the testing in Canada is still ongoing. Meanwhile, likes seem to be gone again in Canada as of this afternoon.

We wrote about Instagram’s like-hiding experiments a few weeks prior to the public tests, after the pending rollout was discovered by reverse-engineering extraordinaire Jane Manchun Wong.

So why hide likes? Instagram says it’s “because [they] want your followers to focus on the photos and videos you share, not how many likes they get.�

In other words: when likes are public, people care too much about them. People view it as a metric of success — teasing those who get too few, or buying likes to try to gain admiration. If a post doesn’t get enough likes, people delete them to make it seem like all of their photos are hits. In theory, hiding likes from the feed but making them visible to the creator lets people get some sense of what’s working, without having to worry so much about whatever anyone else is taking away from the like count on any given photo.

Here’s what Instagram looks like with the design tweak. Note the banner up top giving the user a heads up of the change, and that the like bar just says “Liked by username and others” instead of any specific number of users:

 


Source: TechCrunch

Digitize old photos and film with the best photo scanners for 2019

Got a box of old photos to scan, or a batch of fresh film to digitize? The best photo scanners offer high-resolution, colorful scans along with features to make the scanning process less tedious.
Source: Digital trends

The best tech gifts under $25

We live in a world where you can get a cheeseburger for $1, a functioning computer for $5, and thousands of HD movies for $10 — so it stands to reason that you should be able to pick up some pretty sweet gear for $25.
Source: Digital trends

Think FaceApp Is Scary? Wait Till You Hear About Facebook

The idea that FaceApp is somehow exceptionally dangerous threatens to obscure the real point: All apps deserve this level of scrutiny.
Source: Wired

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