While routine for many illnesses, experts say two- or three-dose vaccines are unprecedented in a pandemic when 60 to 70 percent of the population must be immunized to stop the virus’s spread.
Amazon acknowledged that the system failure was exacerbated by the co-dependencies its various services have on one another. The company had been trying to add capacity to its Amazon Kinesis service that customers use to process real-time data including video, audio and application logs. To resolve the issue, Amazon needed to restart a piece of its system it described as “many thousands of servers,” a lengthy process that had to be done gradually. But because other Amazon cloud services rely on Kinesis, including its Cognito authentication offering, they failed as well.
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NASA ’s Perseverance rover carries a device to convert Martian air into oxygen that, if produced on a larger scale, could be used not just for breathing, but also for fuel.
One of the hardest things about sending astronauts to Mars will be getting them home. Launching a rocket off the surface of the Red Planet will require industrial quantities of oxygen, a crucial part of propellant: A crew of four would need about 55,000 pounds (25 metric tons) of it to produce thrust from 15,000 pounds (7 metric tons) of rocket fuel.
That’s a lot of propellant. But instead of shipping all that oxygen, what if the crew could make it out of thin (Martian) air? A first-generation oxygen generator aboard NASA’s Perseverance rover will test technology for doing exactly that.
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In videos past of this deep learning series, we have going from learning about the origins of the field of deep learning to how the structure of the neural network was conceived, along with working through an intuitive example covering the fundamentals of deep learning.
The focus of this video then will be to tie up many of the loose ends from those videos, and really delve into some of the complexities of deep learning!
It seems not everyone is happy about Microsoft’s productivity measuring tool. 😃
Watching, always watching.
A video on lab grown meat. Meat grown from cells taken from animals. 😃
How do you like your beef, the traditional way or 3D-printed? 🍖 🤔
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Excerpts from the Red Folder.
If we had a “Physics paper title of the year award”, the 2020 winner would surely have to be “The arches of chaos in the solar system”, which was published this week in Science Advances by Nataša Todorović, Di Wu and Aaron Rosengren. In their paper, the trio “reveal a notable and hitherto undetected ornamental structure of manifolds, connected in a series of arches that spread from the asteroid belt to Uranus and beyond”. These manifolds are structures that arise from the gravitational interactions between the Sun and planets. They play an important role in spacecraft navigation and also explain the erratic nature of comets.
The paper is beautifully written, describing the manifolds as “a true celestial autobahn,” and going on to say that they “enable ‘Le Petit Prince’ grand tour of the solar system”. And if that has not piqued your curiosity, the figures are wonderful as well – with the above image being “Jovian-minimum-distance maps for the Greek and Trojan orbital configurations”.
The luxury watchmaker Bremont has released the Hawking Limited Edition watch that contains bits of a wooden desk once used by the late Stephen Hawking. The “exquisite chromometer” also contains pieces of a meteorite and is etched with a view of the night sky as seen from Oxford on 8 January 1942, Hawking’s place and date of birth. What is more, the serial number of the watch is printed on paper from a 1979 paper by Hawking that was cowritten by Gary Gibbons.