A conceptual NASA study explores the idea of a lunar Wi-Fi network to help fix inadequate internet services in American cities, including Cleveland, Ohio.
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Convolutional neural networks running on quantum computers have generated significant buzz for their potential to analyze quantum data better than classical computers can. While a fundamental solvability problem known as “barren plateaus” has limited the application of these neural networks for large data sets, new research overcomes that Achilles heel with a rigorous proof that guarantees scalability.
“The way you construct a quantum neural network can lead to a barren plateau—or not,” said Marco Cerezo, co-author of the paper titled “Absence of Barren Plateaus in Quantum Convolutional Neural Networks,” published today by a Los Alamos National Laboratory team in Physical Review X. Cerezo is a physicist specializing in quantum computing, quantum machine learning, and quantum information at Los Alamos. “We proved the absence of barren plateaus for a special type of quantum neural network. Our work provides trainability guarantees for this architecture, meaning that one can generically train its parameters.”
As an artificial intelligence (AI) methodology, quantum convolutional neural networks are inspired by the visual cortex. As such, they involve a series of convolutional layers, or filters, interleaved with pooling layers that reduce the dimension of the data while keeping important features of a data set.
Massive asteroids — including one the size of the Empire State Building — are predicted to make “close” encounters with Earth in the coming weeks, with one set to whiz by as early as Wednesday night.
The space rock “2004 UE,” which at 1,246 feet is only a few feet shorter than the Midtown skyscraper, will be 2.6 million miles away on Nov. 13.
Of the asteroids headed our way, “1996 VB3” — which has a diameter of about 750 feet — is expected to come closest to Earth, at a distance of only 2.1 million miles, according to NASA’s Center for Near-Earth Objects.
Conventional lung cancer treatments include surgery, chemotherapy and radiotherapy; however, these treatments are often poorly tolerated by patients. Cannabinoids have been studied for use as a primary cancer treatment. Cannabinoids, which are chemically similar to our own body’s endocannabinoids, can interact with signalling pathways to control the fate of cells, including cancer cells. We present a patient who declined conventional lung cancer treatment. Without the knowledge of her clinicians, she chose to self-administer ‘cannabidiol (CBD) oil’ orally 2–3 times daily. Serial imaging shows that her cancer reduced in size progressively from 41 mm to 10 mm over a period of 2.5 years. Previous studies have failed to agree on the usefulness of cannabinoids as a cancer treatment. This case appears to demonstrate a possible benefit of ‘CBD oil’ intake that may have resulted in the observed tumour regression. The use of cannabinoids as a potential cancer treatment justifies further research.
Field doctors still diagnose burns by sight, smell and touch. A smart bandage and smart phone camera may be all we need to change that — and prevent serious and lasting complications.
This article was produced for AMEDD by Scientific American Custom Media, a division separate from the magazine’s board of editors.
The supernova remanent is located about 19,600 light years away from Earth.
A new image by Chandra reveals a rare supernova remanent created by a white dwarf accumulating material from another star until it explodes.
Huge thanks to:
Blue Origin: https://www.youtube.com/c/blueoriginchannel/featured.
Everyday Astronaut: https://www.youtube.com/c/EverydayAstronaut.
ULA: https://www.youtube.com/channel/UCnrGPRKAg1PgvuSHrRIl3jg.
Lab Padre: https://www.youtube.com/channel/UCFwMITSkc1Fms6PoJoh1OUQ
NASA: https://www.youtube.com/c/NASA/featured.
Evan Karen: https://www.youtube.com/channel/UCDN1X8Fz1oAXX-rBcOWjzmg.
Ocean Cam: https://www.youtube.com/channel/UCF8IYFF60clbbznjvJ7qoTQ
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Source of thumb:
Blue Origin: https://twitter.com/blueorigin.
Alexander Svan: https://twitter.com/AlexSvanArt.
Izan Ramos: https://twitter.com/IzanRamos2002
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Raptor and BE4SpaceX and Blue Origin have been competing with each other for many space crafts and commercial contracts. We have also talked about their rivalry many times but today is all about their engines that fire up the massive rockets both the companies are developing. SpaceX, the leading space company has made many rocket engines since its launch in 2002. A few months ago, SpaceX completed its 100th Raptor Engine. This extraordinary milestone was achieved in just 29 months. Blue Origin’s rocket engines game started work on the BE-4 in 2011. Importantly, they said the “BE-4 would be ‘ready for flight’ by 2017″, but at this moment Blue Origin’s powerful BE-4 engine is more than four years late. The first flight test of the new engine is now expected no earlier than 2022 on the Vulcan rocket. This is a big problem and we need to talk about that.
So, How did Blue Origin’s BE-4 turn into a joke whereas SpaceX’s Raptor is the leading example?
Let’s find out:
Firstly, how has BE-4 gone through almost a decade of failure?
This was their first engine to combust liquid oxygen and liquified natural gas propellants. It was initially planned for the engine to be used exclusively on a Blue Origin proprietary launch vehicle New Glenn, the company’s first orbital rocket. However, it was announced in 2014 that the engine would also be used on the United Launch Alliance (ULA) Vulcan Centaur launch vehicle, the successor to the Atlas V launch vehicle. This was labeled “a stunner” choice. The company planned to begin full-scale engine testing in late 2016 and expected to complete the development of the engine in 2017.However, the first engine was not fully assembled until March 2017. Also, in March, United Launch Alliance indicated that the economic risk of the Blue Origin engine selection option had been retired, but that the technical risk on the project would remain until a series of engine firing tests were completed later in 2017. A test anomaly occurred on 13 May 2017 and Blue Origin reported that they lost a set of powerpack hardware.
SpaceX’s Raptor Engines completely HUMILIATED Blue Origin BE-4 Engines!!
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The waters are rising! Japan is using Augmented Reality to teach children about the dangers of flash floods 🌊
Researchers at the University of California, Berkeley, have successfully revived human heart tissue after it had been preserved in a subfreezing, supercooled state for up to three days.
