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Nov 11, 2024

NASA AWE Instrument on the International Space Station Spots Something in the Atmosphere 55 Miles Above Earth

Posted by in categories: climatology, space

NASA says its Atmospheric Waves Instrument (AWE) recorded a series of intense gravity waves at high altitudes during Hurricane Helene.

Nov 11, 2024

SpaceX’s Dragon Shows Off Capability To Reboost International Space Station For The First Time

Posted by in category: space travel

SpaceX Dragon demonstrated its capability to reboost the International Space Station (ISS) for the first time on Friday, with the spacecraft’s Draco thrusters adjusting the station’s orbit.

What Happened: The spacecraft adjusted the station’s orbit through a reboost of altitude by 7/100 of a mile at apogee and 7/10 of a mile at perigee, NASA said. The Dragon spacecraft fired its Draco thrusters for about 12 minutes and 30 seconds in the process.

The Roscosmos Progress spacecraft and the Northrop Grumman Cygnus spacecraft also provide reboost for the space station now.

Nov 11, 2024

AI-based authentication scheme can safeguard vehicles from cyber threats

Posted by in categories: cybercrime/malcode, internet, robotics/AI

Scientists have developed an AI-based authentication scheme to enhance vehicle security in the Internet of Vehicles (IoV).


Scientists claim to have developed an artificial intelligence tool to consolidate the privacy of vehicles and their drivers.

How to preserve the privacy of the so-called Internet of Vehicles (IoV) has emerged as a major challenge due to geographical mobility of vehicles and insufficient resources, the scientists say.

Continue reading “AI-based authentication scheme can safeguard vehicles from cyber threats” »

Nov 11, 2024

AI is universally bad at knowing when to chime in during a conversation: Researchers discover some of the root causes

Posted by in category: robotics/AI

Researchers at Tufts University have identified root causes for AI’s poor conversational timing.


When you have a conversation today, notice the natural points when the exchange leaves open the opportunity for the other person to chime in. If their timing is off, they might be taken as overly aggressive, too timid, or just plain awkward.

The back-and-forth is the social element to the exchange of information that occurs in a , and while humans do this naturally—with some exceptions—AI language systems are universally bad at it.

Continue reading “AI is universally bad at knowing when to chime in during a conversation: Researchers discover some of the root causes” »

Nov 11, 2024

Creating compact near-sensor computing chips via 3D integration of 2D materials

Posted by in categories: computing, materials

Polyethylene (PE) is one of the most widely used and versatile plastic materials globally, prized for its cost-effectiveness, lightweight properties and ease of formability. These characteristics make PE indispensable across a broad spectrum of applications, from packaging materials to structural plastics.

Nov 11, 2024

Saturday Citations: Color vision created demand for colorful animals; observing black hole light echoes; deadlines!

Posted by in categories: cosmology, evolution

A new statistical analysis by researchers at the University of Arizona suggests that evolved in animals around 500 million years ago, long before the evolution of colorful fruits and flowers, which started sprouting 200 to 350 million years ago. The researchers focused on what they term “conspicuous colors”—basically, the ones kids are likeliest to select in a 16 pack of Crayolas—red, orange, yellow, blue and purple.

Around 150 million years ago, presumably to capitalize on the well-established prevalence of color vision, species began evolving warning coloration. And 50 million years later, there was an evolutionary explosion of both warning and sexual coloration. Although the reasons behind this evolutionary burst are still unclear, the researchers identified three warning signal animal vectors behind it: ray-finned fishes, birds and lizards.

Additionally, warning coloration is much more widespread among species than sexual coloration, likely because colorful animals do not themselves need to have color vision to signal the danger they pose to other, color-sensitive species. Sexual color signals, on the other hand, are confined to vertebrate and arthropod species that have well-developed color vision.

Nov 11, 2024

First practical application of viscous electron flow realizes terahertz photoconductivity in graphene

Posted by in categories: materials, quantum physics

When light hits the surface of some materials, namely those exhibiting a property known as photoresistance, it can induce changes in their electrical conductivity. Graphene is among these materials, as incident light can excite electrons within it, affecting its photoconductivity.

Researchers at the National University of Singapore report a deviation from standard photoresistive behaviors in doped metallic . Their paper, published in Nature Nanotechnology, shows that when exposed to continuous-wave terahertz (THz) radiation, Dirac electrons in this material can be thermally decoupled from the lattice, prompting their hydrodynamic transport.

“Our research has emerged from the growing recognition that traditional models of electron behavior don’t fully capture the properties of certain advanced materials, particularly in the ,” Denis Bandurin, Assistant Professor at NUS, lead of the experimental condensed matter physics lab and senior author of the paper, told Tech Xplore.

Nov 11, 2024

Optical tweezing of microparticles and cells using silicon-photonics-based optical phased arrays

Posted by in category: futurism

The authors demonstrate optical tweezing of microparticles and cells using an integrated optical phased array for the first time, increasing the standoff distance of integrated optical tweezers by over two orders of magnitude compared to prior work.

Nov 11, 2024

Magnetic Therapy Transforms Depression Treatment With Rapid Results

Posted by in categories: biotech/medical, neuroscience

Repetitive transcranial magnetic stimulation offers rapid depression relief for patients unresponsive to conventional treatments.

Accelerated over just five days, this therapy targets key brain areas to adjust imbalances linked to depression, demonstrating significant effectiveness.

Transcranial magnetic stimulation to treat depression.

Nov 11, 2024

Human culture is uniquely open-ended rather than uniquely cumulative

Posted by in category: futurism

How did human culture become ecologically dominant? Morgan and Feldman re-examine existing theoretical accounts and propose that, contrary to previous belief, cumulative change and high transmission fidelity are not unique to human culture.

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