I saw your product hunt launch a while back, one question I had was why do you think it makes sense for this product to be open source? Looks like you have a commercial offering - how do you think being open source helps it?
"Wanted to try using noninvasive recordings of brain activity. And the goal was to build an AI system that can decode brain
Those datasets contain the brain recordings of 169 healthy volunteers, taken as they were listening to audiobooks in Dutch and English, over 150 hours worth.
After chopping up those hours into three second bits, they fed both the audiobook and brain recordings to the AI, which analyzed them to spot patterns.
our system performs what’s known as zero-shot classification
From there, the algorithm infers the words the person has most likely heard
AI was capable of getting the right word in the top ten 72.5% of the time when using three seconds of MEG data — hitting it first guess 44% of the time — and 19.1% for EEG data. "
"After years of designing superefficient transmitters and receivers ...[we].. are approaching the practical limits of transmitter and receiver efficiency... To get high performance as we go to higher frequencies, we will need to engineer the wireless channel itself.
Thin two-dimensional metamaterials, known as metasurfaces, can ... tune ... wave’s key properties, such as its amplitude, phase, and polarization, as the wave is reflected or refracted by the surface.
Think of reconfigurable intelligent surfaces as the next evolution of the repeater concept.
That’s important, because as we move to higher frequencies, the propagation characteristics become more “hostile” to the signal.
higher-frequency signals are absorbed, reflected, or scattered
The first public demonstrations of the technology occurred in late 2018, by NTT Docomo in Japan and Metawave, of Carlsbad, Calif.
RIS functions like a very sophisticated mirror, whose orientation and curvature can be adjusted in order to focus and redirect a signal in a specific direction. But rather than physically moving or reshaping the mirror, you electronically alter its surface so that it changes key properties of the incoming electromagnetic wave, such as the phase.
The materials are fabricated using ordinary metals and electrical insulators, or dielectrics.
An RIS node is made up of hundreds or thousands of metamaterial elements called unit cells. Each cell consists of metallic and dielectric layers along with one or more switches or other tunable components.
To control the direction of the larger wave reflecting off the entire RIS, you synchronize all the unit cells to create patterns of constructive and destructive interference in the larger reflected waves "
"Scientists used a technique called transcranial alternating current stimulation
People performed this process for 20 minutes each day on four days, and we then tested their ability to memorize and recall words one month after, without the electrical energy
participants who started out with the lowest cognitive performance were the ones who benefited the most from brain stimulation"
“The launch is significant,” says physicist Paul Kwiat of the University of Illinois in Urbana-Champaign, because it means the [Chinese] are starting to build, and not just plan, a quantum network.
In the absence of fixes, the NSA does not anticipate approving QKD for national security communications.
The US CHIPS Act of 2022, signed on 9 August, allocated more than $153,000 ,000 a year for quantum computing and networks.
"They used perovskite light-absorbers and either platinum or cobalt catalysts for the reaction. The platinum catalyst splits water into oxygen and hydrogen in the presence of sunlight, while cobalt triggers the reduction of carbon dioxide and water into syngas."
"The team replaced the thick glass substrates they had used before with thin conductive plastic substrates. They coated these with few-micrometers-thick layers each of perovskites, conductive metal-oxide and polymer layers, and cobalt or platinum catalyst."
"It produced hydrogen and carbon monoxide with efficiencies of about 0.6 percent and 0.05 percent respectively for each gram. That is low, but comparable to natural photosynthesis, which has a typical efficiency of 0.5 to 1 percent"
"Every decade, another hyped-up database technology comes along that claims SQL is terrible, slow, or impractical,” Pavlo says. “Over time, the conventional wisdom comes back to realizing that [SQL] is a good idea, and everyone returns to it."
"To me what is most surprising is that the attack seemingly came out of nowhere,” says cryptographer Jonathan Katz at the University of Maryland at College Park, who did not take part in this new work. “There were very few prior results showing any weaknesses in SIKE, and then suddenly this result appeared with a completely devastating attack—namely, it finds the entire secret key, and does so relatively quickly without any quantum computation."
"The rate of wrongful convictions in the United States is estimated to be somewhere between 2% and 10%." 10% seems awfully high, I wonder how the percentage varies for more serious crimes like murder?