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    Deep Learning Speeds up Galactic Calculations

    November 1, 2023, Categories  Astronomy/Space, Physics

    Four square images showing dark backgrounds with stars and galaxies
    Divide and conquer. The upper images show a wide area of a galaxy being simulated. The time resolution is very low, in which each “step” of the simulation is around 100,000 years. The lower images show the specific area affected by a supernova explosion and have a finer time resolution where each step is under 10,000 years. These regions are combined with the more general simulation to improve the overall accuracy and efficiency of the simulation. ©2023 Hirashima et al., NASA/JPL-Caltech/ESO/R. Hunt/Hubble/L. Calçada CC-BY-ND

    A new way to simulate supernovae may help shed light on our cosmic origins. Supernovae, exploding stars, play a critical role in the formation and evolution of galaxies...

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    AI Tool Generates Video from Brain Activity

    May 30, 2023, Categories  Physics, Technology/Electronics

    “Alexa, play back that dream I had about Kirsten last week.” That’s a command that may not be too far off in the future, as researchers close in on technology that can tap into our minds and retrieve the imagery of our thoughts.

    Researchers at the National University of Singapore and the Chinese University of Hong Kong reported last week that they have developed a process capable of generating video from brain scans. The research is published on the arXiv preprint server.

    Using a process called functional magnetic resonance imaging (fMRI), researchers Jiaxin Qing, Zijiao Chen and Juan Helen Zhou coupled data retrieved through imaging with the deep learning model Stable Diffusion to create smooth, high quality videos.

    Successful recreations of still imagery gleaned from brain ...

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    Deep Learning for Quantum Sensing

    February 8, 2023, Categories  Physics, Technology/Electronics

    Scheme of the implemented deep learning protocol.
    Scheme of the implemented deep learning protocol. A limited number of quantum probe states are fed into the sensor treated as a black box. A grid of measurement results is collected to train a neural network, which learns the posterior probability distribution associated with the single-measurement Bayesian update. Such distribution is used to define the reward of the RL agent that sets the control phases on the black-box device. Image credit: Cimini et al., doi 10.1117/1.AP.5.1.016005

    Quantum sensing represents one of the most promising applications of quantum technologies, with the aim of using quantum resources to improve measurement sensitivity...

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    Wi-Fi could help Identify when you’re Struggling to Breathe

    December 22, 2022, Categories  Biology/Biotechnology, Health/Medical, Physics

    Wi-Fi could help identify when you're struggling to breathe
    Jason Coder sets up an experiment in an anechoic chamber to use Wi-Fi to sense breathing. The manikin is used to train medical professionals, and simulates a number of breathing scenarios. Credit: R. Jacobson/NIST

    Wi-Fi routers continuously broadcast radio frequencies that your phones, tablets and computers pick up and use to get you online. As the invisible frequencies travel, they bounce off or pass through everything around them—the walls, the furniture and even you. Your movements, even breathing, slightly alter the signal’s path from the router to your device.

    Those interactions don’t interrupt your internet connection, but they could signal when someone is in trouble...

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