Archive for the ‘military’ category: Page 4

Oct 24, 2020

Artificial intelligence can predict students’ educational outcomes based on tweets

Posted by in categories: mathematics, military, neuroscience, robotics/AI

Ivan Smirnov, Leading Research Fellow of the Laboratory of Computational Social Sciences at the Institute of Education of HSE University, has created a computer model that can distinguish high academic achievers from lower ones based on their social media posts. The prediction model uses a mathematical textual analysis that registers users’ vocabulary (its range and the semantic fields from which concepts are taken), characters and symbols, post length, and word length.

Every word has its own rating (a kind of IQ). Scientific and cultural topics, English words, and words and posts that are longer in length rank highly and serve as indicators of good academic performance. An abundance of emojis, words or whole phrases written in capital letters, and vocabulary related to horoscopes, driving, and military service indicate lower grades in school. At the same time, posts can be quite short—even tweets are quite informative. The study was supported by a grant from the Russian Science Foundation (RSF), and an article detailing the study’s results was published in EPJ Data Science.

Foreign studies have long shown that users’ social media behavior—their posts, comments, likes, profile features, user pics, and photos—can be used to paint a comprehensive portrait of them. A person’s social media behavior can be analyzed to determine their lifestyle, personal qualities, individual characteristics, and even their mental health status. It is also very easy to determine a person’s socio-demographic characteristics, including their age, gender, race, and income. This is where profile pictures, Twitter hashtags, and Facebook posts come in.

Oct 23, 2020

Episode 21 — How Aircraft Propellers Drove The Aeronautical Revolution

Posted by in categories: military, space travel

Great new episode with the Smithsonian’s Jeremy R. Kinney. We discuss all aspects of how the seemingly mundane propeller drove the 20th Century’s revolution in aerospace and helped usher in an era of global warfare, travel, and trade.

Without the lowly propeller, global trade and commerce and freedom of movement as we knew it prior to Covid would have never had the opportunity to flourish. Special guest Jeremy R. Kinney, Chair of the Aeronautics Department at the Smithsonian Institution’s National Air and Space Museum in Washington, D.C., provides a fascinating narrative to how and why advances in aircraft propeller technology enabled aerospace to revolutionize global warfare, travel, and trade. Author of “Reinventing the Propeller,” Kinney and I discuss many underappreciated aspects of this aeronautical workhorse.

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Oct 22, 2020

Tesla software leak reveals HEPA filter with Bioweapon Defense Mode coming to Model Y

Posted by in categories: biotech/medical, military

A new Tesla software leak revealed that the automaker is planning to bring a HEPA filter, enabling Tesla’s Bioweapon Defense Mode, to Model Y.

With the Model X and later the Model S, Tesla has started to put massive HEPA-rated air filters inside its vehicles.

The idea is for Tesla to put efforts into developing a more powerful air filtering system in order to not only contribute to the reduction of local air pollution with electric vehicles but also to reduce the direct impact of air pollution on the occupants of its vehicles.

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Oct 21, 2020

All Of The Navy’s Arleigh Burke Destroyers Will Get Hypersonic Missiles Top Official Says

Posted by in category: military

Adding hypersonic missiles to the arsenal of dozens of Arleigh Burke class destroyers could be a very expensive and labor intensive endeavor.

Oct 21, 2020

The Navy Just Sent A Drone To Deliver Cargo To One Of Its Ballistic Missile Submarines

Posted by in categories: drones, military

The Navy is exploring new options for replenishing its submarines out at sea, which could have broader impacts on how it resupplies all of its fleets.

Oct 21, 2020

Navy Hires Boeing To Develop A Very Fast And Long-Range Strike Missile Demonstrator

Posted by in categories: electronics, military

“The SPEAR flight demonstrator will provide the F/A-18 Super Hornet and carrier strike group with significant improvements in range and survivability against advanced threat defensive systems,” Mercer, the firm’s SPEAR program manager, added.

Very-long-range, high-speed strike weapons could be very valuable for the Navy’s carrier air wings, especially as potential near-peer adversaries, such as China and Russia, continue to develop and field increasingly longer-range and otherwise more capable surface-to-air missile systems and associated radars and other sensors. Aircraft carriers and their associated strike groups and air wings are also increasingly at risk from various anti-access and area-denial capabilities, further underscoring the need for weapons with greater range and that are able to prosecute targets faster to help ensure their survival.

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Oct 20, 2020

NORAD F-22s intercept Russian fighters, bombers near Alaska

Posted by in category: military

F-22 Raptors from the North American Aerospace Defense Command, or NORAD, intercepted a group of Russian aircraft in international airspace near Alaska Monday night.

In a series of tweets early Tuesday morning, NORAD said the Raptors intercepted a pair of Russian Tu-95 “Bear” bombers escorted by Su-35 fighters. NORAD said it also identified a Russian A-50 airborne early warning and control aircraft supporting the other Russian planes that “loitered” in the Alaska Air Defense Identification Zone and came within 30 nautical miles of Alaska’s shore.

NORAD said that all Russian aircraft remained in international airspace and at no time entered U.S. or Canadian airspace.

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Oct 19, 2020

Impatient? A Spacecraft Could Get to Titan in Only 2 Years Using a Direct Fusion Drive

Posted by in categories: military, nuclear energy, space

Fusion power is the technology that is thirty years away, and always will be – according to skeptics at least. Despite its difficult transition into a reliable power source, the nuclear reactions that power the sun have a wide variety of uses in other fields. The most obvious is in weapons, where hydrogen bombs are to this day the most powerful weapons we have ever produced. But there’s another use case that is much less destructive and could prove much more interesting – space drives.

The concept fusion drive, called a direct fusion drive (or DFD) is in development at the Princeton Plasma Physics Laboratory (PPPL). Scientists and Engineers there, led by Dr. Samuel Cohen, are currently working on the second iteration of it, known as the Princeton field reversed configuration-2 (PFRC-2). Eventually the system’s developers hope to launch it into space to test, and eventually become the primary drive system of spacecraft traveling throughout our solar system. There’s already one particularly interesting target in the outer solar system that is similar to Earth in many ways – Titan. Its liquid cycles and potential to harbor life have fascinated scientists since they first started collecting data on it.

Oct 19, 2020

Army Explores Robot Decoys & Cannon-Fired Jamming Pods

Posted by in categories: military, robotics/AI

Sun Tzu said all warfare is based on deception. Today, that means electronic deception.

Oct 18, 2020

Video Of Chinese Missile Carrier Jet Hauling What Appears To Be A Hypersonic Weapon Emerges

Posted by in category: military

The video could be the first visual evidence that China is actively testing an air-launched hypersonic weapon.

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