Science & TechnologyS


Evil Rays

Using radar to keep the elderly safe

Arielle Duhaime-Ross
The Verge
Wed, 07 May 2014 08:59 UTC
UK elderly people
© Paul Doyle / Alamy/Alamy
Americans are growing older, fast. In 2000, people 65 and over made up 12 percent of the population, and by 2030, that number is expected to climb to 19 percent. As a result, "elderly monitoring" products - products designed to help loved ones keep an eye on ailing parents such as GPS bracelets, motion sensors, and so-called "granny cams" - - have started popping up in online stores and specialized pharmacies all over the US.

Unfortunately, most of these systems have huge drawbacks that would make anyone reticent to use them. GPS systems, for instance, can really only tell you a person's location, not how well they're doing. And cameras infringe on a person's privacy in a big way. That's why researchers have turned to technology that you're much more likely to see in an airport than in your aging parent's home: radar.

Comment: Just what we need -- more electromagnetic frequencies and monitoring under the guise of keeping us "safe".

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Laptop

Ditch Internet Explorer, security experts warn

Samuel Gibbs
The Guardian
Mon, 28 Apr 2014 16:18 UTC
Image
© KPA/Zuma/Rex FeaturesSerious security vulnerability could allow hackers to take control of a Windows computer through Internet Explorer, from version IE6 onwards.
More than half of all internet users are vulnerable to a serious security bug that means Windows XP is vulnerable to hackers

Security experts have urged Windows XP users to change browsers owing to a serious bug in Microsoft's Internet Explorer that could threaten over half of all internet users.

The vulnerability is actively being exploited by hackers, Microsoft has warned, and every active version of Internet Explorer is at risk, including IE 6 to IE 11, Windows XP and Windows RT. The bug could allow hackers to gain access to and hijack a Windows computer, including personal data.

Microsoft warned that it was "aware of limited, targeted attacks" currently under way using the security hole in Internet Explorer, which is used by over 55% of internet users globally, according to the latest data from research firm Netmarketshare.

"This issue allows remote code execution if users visit a malicious website with an affected browser. This would typically occur by an attacker convincing someone to click a link in an email or instant message," Dustin Childs, a group manager of Microsoft's Trustworthy Computing department, explained in a blog post.

Comment: From 2010:
German government warns against using MS Explorer
France warns against Internet Explorer use

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Info

In silico: First steps towards a computer simulation of the human body

Chris Green
The Independent, UK
Thu, 08 May 2014 16:19 UTC
Human Body
© The University of Shefield, UK
A pregnant woman undergoing tests in hospital has her biological information plugged into a computer. The results say that she is highly likely to damage her pelvic floor muscles during the birth and will probably suffer from incontinence years later. Armed with this information, doctors intervene to minimise the damage as her baby is born, and the problems are avoided.

It sounds like the sort of predictive healthcare that we cannot expect for decades, but British researchers working on a huge collaborative medical research project have said that advances like this are not far away.

The University of Sheffield's Insigneo Institute, which was founded exactly a year ago, comprises 123 academics and clinicians who are working towards a grand European Commission-backed endeavour known as the Virtual Physiological Human programme. Collectively, they have already won more than £20 million in research funding.

The programme's ultimate aim is to create an in silico, or computer simulated, replica of the human body that will allow the virtual testing of treatments on patients based on their own specific needs - potentially predicting future problems they may encounter or eliminating the need for invasive procedures.
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Comet 2

Asteroid 2013 UQ4 suddenly becomes a dark comet with a bright future

Bob King
Universe Today
Thu, 08 May 2014 14:06 UTC
Comet C/2013 UQ4
© Artyom Novichonok and Taras PrystavskiComet C/2013 UQ4, originally discovered as an asteroid, now shows the characteristic coma of a comet. This photo was made on May 7, 2014 from a telescope in Australia.
On October 23, 2013, astronomers with the Catalina Sky Survey picked up a very faint asteroid with an unusual orbit more like a that of a comet than an asteroid. At the time 2013 UQ4 was little more than a stellar point with no evidence of a hazy coma or tail that would tag it as a comet. But when it recently reappeared in the morning sky after a late January conjunction with the sun, amateur astronomers got a surprise.

On May 7, Comet ISON co-discoverer Artyom Novichonok, and Taras Prystavski used a remote telescope located in Siding Spring, Australia to take photos of 2013 UQ4 shortly before dawn in the constellation Cetus. Surprise, surprise. The asteroid had grown a little fuzz, making the move to comethood. No longer a starlike object, 2013 UQ4 now displays a substantial coma or atmosphere about 1.5 arc minutes across with a more compact inner coma measuring 25 arc seconds in diameter. No tail is visible yet, and while its overall magnitude of +13.5 won't make you break out the bottle of champagne, it's still bright enough to see in a 12-inch telescope under dark skies.
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Airplane Paper

Trillion dollar US F-35 jets unable to escape radars: Aviation Week


Press TV
Thu, 08 May 2014 10:56 UTC
F-35-Joint-Strike-Fighter
© UnknownF-35-Joint-Strike-Fighter
US warplanes, under the F-35 Joint Strike Fighter program, are incapable of escaping Russian and Chinese radars, a report says.

"The F-35 Joint Strike Fighter... is not, in fact, stealthy in the eyes of a growing number of Russian and Chinese radars," the Aviation Week recently reported.

The report said the F-35 is not even effective in "jamming enemy radar."

The US Department of Defense is spending "hundreds of billions of dollars" for a "fighter that will need the help of specialized jamming aircraft," the Aviation Week stated in its report.

It said Russian armed forces have been equipped with a "highly counter-stealth radar system" - unveiled at an air show near Moscow in August 2013 - that is able to "track small targets."

The US Department of Defense waived laws in January that ban the use of Chinese-made components on US weapons, including on F-35 warplanes.

Production of the F-35 military aircraft has faced technical issues, cost overruns and delays.

Some experts say flaws in the F-35 fuel tank and fueldraulic systems have left it even more vulnerable to lightning strikes and other fire sources including enemy fire.
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Info

Weird engineered organism has 6-letter DNA

Tanya Lewis
Live Science
Wed, 07 May 2014 12:49 UTC
DNA Alphabet
© SynthorxResearchers added new letters to the DNA alphabet of an organism, shown here as printing blocks.
The first report of a bacterium whose genome contains man-made DNA building blocks opens the door for tailor-made organisms that could be used to produce new drugs and other products.

All living creatures have a DNA "alphabet" of just four letters, which encode instructions for the proteins that perform most of the key jobs inside cells. But expanding that alphabet to include artificial letters could give organisms the ability to produce new proteins never seen before in nature.

The man-made DNA could be used for everything from the manufacture of new drugs and vaccines to forensics, researchers say.

"What we have done is successfully store increased information in the DNA of a living cell," study leader Floyd Romesberg, a chemical biologist at The Scripps Research Institute in La Jolla, California, told Live Science. Yet many steps remain before Romesberg and his colleagues can get cells to produce artificial proteins.
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Fireball 5

Killer ancient meteor strike carved out giant crater, evidence suggests

Tanya Lewis
Live Science
Wed, 07 May 2014 09:01 UTC
Impact Crater
© Alberta Geographic Survey/University of AlbertaThis is a map showing the structure and contour of the Bow City crater, possibly created by a giant meteorite impact. Color variation shows meters above sea level.
An ancient ring-shaped structure in southern Alberta, Canada, likely formed when a meteorite smashed into Earth, producing a 5-mile-wide (8 kilometers) crater. The impact would have produced enough energy to destroy a region the size of the land area of New York City, researchers say.

A geologist discovered the structure near the village of Bow City, although time and glaciers have mostly eroded the signs of the ancient meteorite strike. Scientists can't say for sure that a meteorite impact created the Bow City crater, but seismic and geological evidence strongly support this notion.

"An impact of this magnitude would kill everything for quite a distance," Doug Schmitt, a rock physics expert at the University of Alberta, Canada, said in a statement. If the strike happened today, the city of Calgary, which is 125 miles (200 km) to the northwest, would be "completely fried," and in Edmonton, which is 300 miles (500 km) northwest, "every window would have been blown out," he added.
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Satellite

Nearest bright "hypervelocity star" found: Speeding at 1 million mph, it probes black hole and dark matter


Phys.org
Wed, 07 May 2014 00:00 UTC
hypervelocity star
© Ben Bromley, University of UtahThis is an astrophysicist-artist's conception of a hypervelocity star speeding away from the visible part of a spiral galaxy like our Milky Way and into the invisible halo of mysterious "dark matter" that surrounds the galaxy's visible portions. University of Utah researcher Zheng Zheng and colleagues in the US and China discovered the closest bright hypervelocity star yet found.
A University of Utah-led team discovered a "hypervelocity star" that is the closest, second-brightest and among the largest of 20 found so far. Speeding at more than 1 million mph, the star may provide clues about the supermassive black hole at the center of our Milky Way and the halo of mysterious "dark matter" surrounding the galaxy, astronomers say.

"The hypervelocity star tells us a lot about our galaxy - especially its center and the dark matter halo," says Zheng Zheng, an assistant professor of physics and astronomy and lead author of the study published recently in Astrophysical Journal Letters by a team of U.S. and Chinese astronomers.

"We can't see the dark matter halo, but its gravity acts on the star," Zheng says. "We gain insight from the star's trajectory and velocity, which are affected by gravity from different parts of our galaxy."
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Question

Surprise gamma-ray burst behaves differently than expected

Shannon Hall
Universe Today
Tue, 06 May 2014 16:26 UTC
Gamma-Ray Burst
© NASA/Swift/Mary Pat Hrybyk-Keith and John JonesThis artist’s impression shows a gamma-ray burst with two intense beams of relativistic matter emitted by the black hole.
Roughly once a day the sky is lit up by a mysterious torrent of energy. These events - known as gamma-ray bursts - represent the most powerful explosions in the cosmos, sending out as much energy in a fraction of a second as our Sun will give off during its entire lifespan.

Yet no one has ever witnessed a gamma-ray burst directly. Instead astronomers are left to study their fading light.

New research from an international team of astronomers has discovered a puzzling feature within one Gamma-ray burst, suggesting that these objects may behave differently than previously thought.

These powerful explosions are thought to be triggered when dying stars collapse into jet-spewing black holes. While this stage only lasts a few minutes, its afterglow - slowly fading emission that can be seen at all wavelengths (including visible light) - will last for a few days to weeks. It is from this afterglow that astronomers meticulously try to understand these enigmatic explosions.
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Comet 2

New Comet - C/2014 H1 (Christensen)

Seiichi Yoshida
Aerith Net
Tue, 06 May 2014 13:58 UTC
Discovery Date: April 24, 2014

Magnitude: 17.9 mag

Discoverer: Eric J. Christensen (Mount Lemmon)
C/2014 H1
© Aerith NetMagnitudes Graph
The orbital elements are published on M.P.E.C. 2014-H33.
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