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Archivo del Autor: Belen De Leon

El 'big data' revela que las novelas están llenas de sesgos de género

Un análisis de los resúmenes de los libros nominados al Premio Man Booker revela que las mujeres suelen describirse con términos como ‘guapa’, ‘soltera’ y ‘bonita’, y suelen tener profesiones de menor nivel que los hombres como ‘enfermera’, ‘maestra’ y muy comúnmente, ‘prostituta’ 
Source: MIT

VR optics could help old folks keep the world in focus

The complex optics involved with putting a screen an inch away from the eye in VR headsets could make for smartglasses that correct for vision problems. These prototype “autofocals” from Stanford researchers use depth sensing and gaze tracking to bring the world into focus when someone lacks the ability to do it on their own.

I talked with lead researcher Nitish Padmanaban at SIGGRAPH in Vancouver, where he and the others on his team were showing off the latest version of the system. It’s meant, he explained, to be a better solution to the problem of presbyopia, which is basically when your eyes refuse to focus on close-up objects. It happens to millions of people as they age, even people with otherwise excellent vision.

There are, of course, bifocals and progressive lenses that bend light in such a way as to bring such objects into focus — purely optical solutions, and cheap as well, but inflexible, and they only provide a small “viewport” through which to view the world. And there are adjustable-lens glasses as well, but must be adjusted slowly and manually with a dial on the side. What if you could make the whole lens change shape automatically, depending on the user’s need, in real time?

That’s what Padmanaban and colleagues Robert Konrad and Gordon Wetzstein are working on, and although the current prototype is obviously far too bulky and limited for actual deployment, the concept seems totally sound.

Padmanaban previously worked in VR, and mentioned what’s called the convergence-accommodation problem. Basically, the way that we see changes in real life when we move and refocus our eyes from far to near doesn’t happen properly (if at all) in VR, and that can produce pain and nausea. Having lenses that automatically adjust based on where you’re looking would be useful there — and indeed some VR developers were showing off just that only 10 feet away. But it could also apply to people who are unable to focus on nearby objects in the real world, Padmanaban thought.

This is an old prototype, but you get the idea.

It works like this. A depth sensor on the glasses collects a basic view of the scene in front of the person: a newspaper is 14 inches away, a table three feet away, the rest of the room considerably more. Then an eye-tracking system checks where the user is currently looking and cross-references that with the depth map.

Having been equipped with the specifics of the user’s vision problem, for instance that they have trouble focusing on objects closer than 20 inches away, the apparatus can then make an intelligent decision as to whether and how to adjust the lenses of the glasses.

In the case above, if the user was looking at the table or the rest of the room, the glasses will assume whatever normal correction the person requires to see — perhaps none. But if they change their gaze to focus on the paper, the glasses immediately adjust the lenses (perhaps independently per eye) to bring that object into focus in a way that doesn’t strain the person’s eyes.

The whole process of checking the gaze, depth of the selected object and adjustment of the lenses takes a total of about 150 milliseconds. That’s long enough that the user might notice it happens, but the whole process of redirecting and refocusing one’s gaze takes perhaps three or four times that long — so the changes in the device will be complete by the time the user’s eyes would normally be at rest again.

“Even with an early prototype, the Autofocals are comparable to and sometimes better than traditional correction,” reads a short summary of the research published for SIGGRAPH. “Furthermore, the ‘natural’ operation of the Autofocals makes them usable on first wear.”

The team is currently conducting tests to measure more quantitatively the improvements derived from this system, and test for any possible ill effects, glitches or other complaints. They’re a long way from commercialization, but Padmanaban suggested that some manufacturers are already looking into this type of method and despite its early stage, it’s highly promising. We can expect to hear more from them when the full paper is published.


Source: TechCrunch

Reports indicate that Tesla has been subpoenaed over Elon Musk’s tweets

The long week for Tesla is getting even longer as the company has now been subpoenaed by the Securities and Exchange Commission, according to multiple reports.

First reported by the Fox Business Network and confirmed by The New York Times, federal regulators appear to be interested in Elon Musk’s August 7 tweet regarding his plans for privatizing the electric car manufacturer and his claims to have found investors committed to finance the transaction.

From later statements it has become clear that Musk had not actually secured financing, and has only had preliminary talks with investors.

Federal securities regulators have served Tesla with a subpoena, according to a person familiar with the investigation, increasing pressure on the electric car company as it deals with the fallout from several recent actions by its chief executive, Elon Musk.

For Musk, the ill-advised tweet was either a drug-induced bit of foolishness or a short-sighted attempt to address the hordes of short-sellers who have swarmed over the stock, angling to make millions of dollars off any perceived misfortune in the market.

Tesla declined to comment for this article.

According to the Times, regulators were interested in Tesla even before Musk began his erratic tweeting. They were already questioning Tesla whistleblower Martin Tripp (according to the Times), who has claimed that the company knowingly manufactured batteries with punctured holes, which could impact hundreds of cars; misled the public about the number of Model 3s actually being produced by as much as 44 percent; and lowered vehicle specs so the company could use waste and scrap material in vehicles.

While Tripp’s allegations are explosive enough, they’re now being overshadowed by the current drama over Musk’s tweets, which sent the stock price of his company soaring.

While Tesla has now retained Goldman Sachs to arrange financing for a privatization, at the time of Musk’s tweets last week, no financing had been secured.

That could land the serial entrepreneur in a lot of hot water.


Source: TechCrunch

The Motorola phones getting Android P: Moto Z3, Z2, X4, G6 – CNET

Look out for the Android update on the Moto G6, Moto X4 and Moto Z3 starting this fall.
Source: CNET

Alex Jones video that spurred Twitter suspension remained live on Periscope – CNET

But Twitter owns Periscope, so…
Source: CNET

Android 9 Go means a $30 phone may get Pie before you do – CNET

Google says Android Pie will come to Android Go phones this fall. (No word yet on Samsung Galaxy phones.)
Source: CNET

Facebook raised $300M during first year of birthday fundraisers – CNET

More than 750,000 nonprofits have access to the social network’s fundraising tools.
Source: CNET

George R.R. Martin: Game of Thrones TV deaths won't match books – CNET

The author says he’s “working on” Winds of Winter, and the print books won’t always align with the HBO series.
Source: CNET

Why Facebook Enlisted This Research Lab to Track Its Trolls

What can the 14-person Digital Forensics Research Lab discover about fake news on Facebook that the billion-dollar company doesn’t already know?
Source: Wired

'Crazy Rich Asians' Changes Nothing About Rom-Coms, and Everything About Movies

Jon H. Chu’s posh extravaganza is a movie of communal heart and necessary firsts.
Source: Wired

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