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Sep 12, 2024

Watch live: Polaris Dawn astronauts make first commercial spacewalk from SpaceX Dragon spaceship

Posted by in category: space travel

Live coverage as the Polaris Dawn crew attempt the world’s first commercial spacewalk from the SpaceX Dragon capsule Resilience. The spacewalk is scheduled to begin at 5:58 a.m. EDT (0858 UTC) but the time is subject to change.

Aboard Resilience are mission commander, Jared Isaacman, retired U.S. Air Force pilot, Scott “Kidd” Poteet, and two SpaceX Lead Space Operations Engineers, Anna Menon and Sarah Gillis. Isaacman and Gillis will take turns emerging from the Dragon’s hatch while Poteet and Menon remain inside. The entire spacecraft will be depressurised for the Extravehicular Activity (EVA).

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Sep 11, 2024

Procedural Road Network Made With Unreal Engine 5

Posted by in categories: information science, robotics/AI, transportation

Game Developer jourverse, who is currently working on a tutorial series focused on building a traffic system in Unreal Engine 5, shared a demo project file for this procedural road network integrated with vehicle AI for obstacle avoidance, using A* for pathfinding.

The developer explained that both the A* algorithm and the road editor mode are implemented in C++, with no use of neural networks. Vehicle AI operations like spline following, reversing, and performing 3-point turns are handled through Blueprints. The vehicle AI navigates using two paths: the green spline for the main route and the blue spline for obstacle avoidance. The main spline leverages road network nodes to determine the path to the target via A* on FPathNode, which includes adjacent road nodes.

For obstacle detection, the vehicle employs polynomial regression to predict its future position. Upon detecting an obstacle, a grid of sphere traces is generated to map the obstacle’s location, and another A* algorithm is employed to create a path around the obstacle.

Sep 11, 2024

Life after death

Posted by in categories: biotech/medical, futurism

Dr. Sam Parnia talks about reviving people adter they died. Very informative. Fast forward a little to listen to it.

Sep 11, 2024

Brain-wide dynamics linking sensation to action during decision-making

Posted by in category: neuroscience

Researchers at SWC have mapped how the brain transforms sensations into action.

Read the story: https://sainsburywellcome.org/web/research-news/brain-wide-d…discovered.

Full paper in https://nature.com/articles/s41586-024-07908-w.

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Sep 11, 2024

Novel Mössbauer scheme proposed for gravitation wave detection

Posted by in categories: innovation, physics

Scientists at the Institute of High Energy Physics (IHEP) of the Chinese Academy of Sciences have proposed an innovative method to realize gravitational wave detection by utilizing Mössbauer resonance. Their findings, recently published in Science Bulletin, highlight a new approach that could revolutionize the study of gravitational waves.

Sep 11, 2024

Scientists cool positronium to near absolute zero for antimatter research

Posted by in category: particle physics

Most atoms are made from positively charged protons, neutral neutrons and negatively charged electrons. Positronium is an exotic atom composed of a single negative electron and a positively charged antimatter positron. It is naturally very short-lived, but researchers including those from the University of Tokyo successfully cooled and slowed down samples of positronium using carefully tuned lasers.

Sep 11, 2024

Discovery of a new phase of matter in 2D defies normal statistical mechanics

Posted by in category: physics

Physicists from the Cavendish Laboratory in Cambridge have created the first two-dimensional version of the Bose glass, a novel phase of matter that challenges statistical mechanics. The details of the study have been published in Nature.

Sep 11, 2024

New classical algorithm enhances understanding of quantum computing’s future

Posted by in categories: computing, engineering, information science, particle physics, quantum physics

In an exciting development for quantum computing, researchers from the University of Chicago’s Department of Computer Science, Pritzker School of Molecular Engineering, and Argonne National Laboratory have introduced a classical algorithm that simulates Gaussian boson sampling (GBS) experiments.

Sep 11, 2024

Overcoming magnetic disorder: Toward low-energy topological electronics

Posted by in categories: energy, materials

Yet, the current flow along these topologically protected, one-dimensional edges has proven to be far from robust. With the QAHE breaking down in magnetically doped topological insulators at temperatures higher than 1 Kelvin, well below the temperatures predicted by theory.

A new class of materials, known as intrinsic magnetic topological insulators (MTIs), for example MnBi2Te4, possess both non-trivial topology and intrinsic magnetism and are predicted to offer more robust QAHE at higher temperatures than magnetically doped topological insulators.

In MnBi2Te4 it has been shown that the QAHE can survive up to 1.4 K, and interestingly, this can rise to 6.5 K with the application of stabilizing magnetic fields, providing hints at the mechanisms that are driving the breakdown of topological protection.

Sep 11, 2024

Smartphone-based microscope rapidly reconstructs 3D holograms

Posted by in categories: education, holograms, mobile phones

Researchers have developed a new smartphone-based digital holographic microscope that enables precision 3D measurements. The highly portable and inexpensive microscope could help bring 3D measurement capabilities to a broader range of applications, including educational uses and point-of-care diagnostics in resource-limited settings.

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