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Oct 18, 2020

Researchers develop new algorithm with better performance for spectral technology

Posted by in categories: information science, particle physics

Recently, researchers from the Institute of Intelligent Machines developed a new wavelength selection algorithm based on combined moving window (CMW) and variable dimension particle swarm optimization (VDPSO) algorithm.

CMW retained the advantages of the moving window algorithm, and different windows could overlap each other to realize automatic optimization of spectral interval width and number. VDPSO algorithms improved the traditional particle swarm optimization (PSO) algorithm.

This new algorithm, which is called VDPSO-CMW, could search the data space in different dimensions, and reduce the risk of limited local extrema and over fitting.

Oct 18, 2020

Using math to study paintings to learn more about the evolution of art history

Posted by in categories: evolution, information science, mathematics, media & arts

A team of researchers affiliated with a host of institutions in Korea and one in Estonia has found a way to use math to study paintings to learn more about the evolution of art history in the western world. In their paper published in Proceedings of the National Academy of Sciences, the group describes how they scanned thousands of paintings and then used mathematical algorithms to find commonalities between them over time.

Beauty, as the saying goes, is in the eye of the beholder—and so it is also with art. Two people looking at the same can walk away with vastly different impressions. But art also serves, the researchers contend, as a barometer for visualizing the emotional tone of a given society. This suggests that the study of art history can serve as a channel of sorts—illuminating societal trends over time. The researchers further note that to date, most studies of art history have been qualitatively based, which has led to interpretive results. To overcome such bias, the researchers with this new effort looked to mathematics to see if it might be useful in uncovering features of paintings that have been overlooked by human scholars.

The work involved digitally scanning 14,912 paintings—all of which (except for two) were painted by Western artists. The data for each of the paintings was then sent through a mathematical that drew partitions on the based on contrasting colors. The researchers ran the algorithm on each painting multiple times, each time creating more partitions. As an example, the first run of the algorithm might have simply created two partitions on a painting—everything on land, and everything in the sky. The second might have split the land into buildings in one partition and farmland in another.

Oct 18, 2020

NASA will ‘fist bump’ an asteroid to reveal the Solar System’s secrets

Posted by in category: space

NASA is about to grab its first-ever taste of an asteroid. On 20 October, some 334 million kilometres from Earth, the agency’s OSIRIS-REx spacecraft will approach a dark-coloured, diamond-shaped asteroid named Bennu, with the aim of touching its surface for a few seconds — long enough to hoover up a collection of dust and pebbles. If successful, the spacecraft will then fly this carbon-rich rubble back to Earth, where scientists can probe it for clues to the history of the Solar System.


OSIRIS-REx spacecraft is about to execute a nail-biting manoeuvre to scoop up rock samples from the asteroid Bennu and send them back to Earth. OSIRIS-REx spacecraft is about to execute a nail-biting manoeuvre to scoop up rock samples and send them back to Earth.

Oct 18, 2020

Nokia wins NASA contract to put a 4G network on the moon. Yes, really

Posted by in categories: internet, space

The network will enable communications with rovers and support the agency’s plans to have a lunar base by 2028.

Oct 18, 2020

Nobel Prize in Physics Winner

Posted by in categories: biotech/medical, cosmology, physics

It’s unbelievable all that’s going on at the moment in astronomy” — DER SPIEGEL — international.


DER SPIEGEL: Wherever black holes are discussed, that picture is shown. And you are now telling us that we don’t really even know what it is?

Genzel: Exactly. It could be that we are looking at the shadow of a black hole, as it is commonly portrayed. But it could also be the outer wall of a jet that is coming directly at us at the speed of light. To know for sure, we need additional measurements. But we have a problem at the moment: the corona pandemic. Most Earth-based telescopes have been switched off.

Continue reading “Nobel Prize in Physics Winner” »

Oct 18, 2020

Star Wars: La Fuerza

Posted by in category: futurism

Click on photo to start video.

Oct 18, 2020

Dual Carbon batteries: Is this finally the breakthrough we’ve been promised for so long?

Posted by in categories: innovation, sustainability

Circa 2014


A breakthrough new battery technology could finally deliver the sort of across-the-board improvements many industries have needed for a long, long time now.

Continue reading “Dual Carbon batteries: Is this finally the breakthrough we’ve been promised for so long?” »

Oct 18, 2020

First Observation of Nutation in Magnetic Materials – Fundamental to Making Digital Technology Faster and More Efficient

Posted by in categories: physics, space

Much of the ‘memory’ of the world and all our digital activities are based on media, hard disks, where the information is encoded thanks to magnetism, by orienting the spin of electrons in one direction or the opposite.

An international team of scientists led by the Italian physicist Stefano Bonetti, professor at Ca’ Foscari University of Venice and the Stockholm University, has managed for the first time to observe the ‘nutation’ of these spins in magnetic materials, i.e. the oscillations of their axis during precession. The measured nutation period was of the order of one picosecond: one thousandth of a billionth of a second. The discovery was recently published by Nature Physics.

The axis of a spin performs nutation and precession, as with any object that revolves, from spinning tops to planets. In this research, physicists observed experimentally that the nutation of the magnetic spin axis is 1000 times faster than precession, a curiously similar ratio to that of Earth.

Oct 18, 2020

Tesla battery researcher shows new test results pointing to batteries lasting over 2 million miles

Posted by in categories: sustainability, transportation

A Tesla battery researcher showed updated test results pointing to batteries lasting over 15,000 cycles or the equivalent of over 2 million miles (3.5 million km) in an electric car.

Last year, we reported on Jeff Dahn and his lab, who are under contract to do battery research for Tesla, releasing an interesting paper that shows how the latest Li-ion battery technology can produce batteries that would last 1 million miles in electric vehicles.

In a new presentation, Dahn discussed updated test results from this new battery, which he hopes becomes the new standard Li-ion battery that new battery technologies benchmark themselves against.

Oct 18, 2020

Covid-19 cases climbing in almost every state as U.S. braces for possible ‘third peak’

Posted by in category: biotech/medical

“People are doing heroic work, but they are really getting to the point where it’s going to be literally unsustainable,” an infectious diseases doctor says.


Texas, Puerto Rico and the U.S. Virgin Islands stand alone in having recorded decreases in numbers of Covid-19 cases over the last two weeks as the country braces for a possible “third peak” of the disease.

Although Texas reported a “slight decrease” in cases over the 14-day period that ended Saturday, its news was better than elsewhere: 38 states, Washington, D.C., and Guam all recorded increases in cases over the last 14 days, and nine states have plateaued, according to NBC News tallies. Rhode Island, which, like Texas, has also had a net decrease, does not report data over the weekend, and Missouri is not reporting data because of a technology issue.

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