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How to spot deepfakes? Look at light reflection in the eyes

University at Buffalo computer scientists have developed a tool that automatically identifies deepfake photos by analyzing light reflections in the eyes. The tool proved 94% effective in experiments described in a paper accepted at the IEEE International Conference on Acoustics, Speech and Signal Processing to be held in June in Toronto, Canada. ....

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After cracking the

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What do you do after solving the answer to life, the universe, and everything? If you re mathematicians Drew Sutherland and Andy Booker, you go for the harder problem.
In 2019, Booker, at the University of Bristol, and Sutherland, principal research scientist at MIT, were the first to find the answer to 42. The number has pop culture significance as the fictional answer to the ultimate question of life, the universe, and everything, as Douglas Adams famously penned in his novel The Hitchhiker s Guide to the Galaxy. The question that begets 42, at least in the novel, is frustratingly, hilariously unknown.
In mathematics, entirely by coincidence, there exists a polynomial equation for which the answer, 42, had similarly eluded mathematicians for decades. The equation x3+y3+z3=k is known as the sum of cubes problem. While seemingly straightforward, the equation becomes exponentially difficult to solve when framed as a Diophantine equation a problem th ....

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Optimal design for acoustic unobservability in water

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VIDEO: Square norm of sound pressure in water around a designed acoustic cloak during topology optimization.
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Credit: GARUDA FUJII, INSTITUTE OF ENGINEERING, SHINSHU UNIVERSITY, JAPAN
Until now, it was only possible to optimize an acoustic cloaking structure for the air-environment. However, with this latest research, Acoustic cloak designed by topology optimization for acoustic-elastic coupled systems, published in the latest
Applied Physics Letters, it is possible to design an acoustic cloak for underwater environments.
In the conventional topology optimization of acoustic cloaking, the design method was based on an analysis that approximated an elastic body in the air as a rigid body. However, since the approximation holds only for materials that are sufficiently stiff and dense such as metal in the air, there were few material options other than metal. Moreover, it was impossible to design an acoustic cloak in water by t ....

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Standard vital signs could help estimate people's pain levels

A new study demonstrates that machine-learning strategies can be applied to routinely collected physiological data, such as heart rate and blood pressure, to provide clues about pain levels in people with sickle cell disease. Mark Panaggio of Johns Hopkins University Applied Physics Laboratory and colleagues present these findings in the open-access journal PLOS Computational Biology. ....

Mark Panaggio , Johns Hopkins University Applied Physics Laboratory , Us National Institutes Of Health , Mathematics Statistics , Algorithms Models , Medicine Health , ஜான்ஸ் ஹாப்கின்ஸ் பல்கலைக்கழகம் பயன்படுத்தப்பட்டது இயற்பியல் ஆய்வகம் , எங்களுக்கு தேசிய நிறுவனங்கள் ஆஃப் ஆரோக்கியம் , கணிதம் புள்ளிவிவரங்கள் , மருந்து ஆரோக்கியம் ,

Tracking cosmic ghosts

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IMAGE: A visualization of the Glashow event recorded by the IceCube detector. Each colored circle shows an IceCube sensor that was triggered by the event; red circles indicate sensors triggered earlier.
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Credit: IceCube Collaboration
The idea was so far-fetched it seemed like science fiction: create an observatory out of a one cubic kilometer block of ice in Antarctica to track ghostly particles called neutrinos that pass through the Earth. But speaking to Benedickt Riedel, global computing manager at the IceCube Neutrino Observatory, it makes perfect sense.
Constructing a comparable observatory anywhere else would be astronomically expensive, Riedel explained. Antarctica ice is a great optical material and allows us to sense neutrinos as nowhere else. ....

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