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Source: http://nbcsports.msnbc.com/id/21134540/vp/51601871#51601871
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Sunday, April 21, 2013
Saturday, April 20, 2013
Most Beautiful Items: April 13-April 19, 2013
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/t2waewz4waI/most-beautiful-items-april-13+april-19-2013
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Friday, April 19, 2013
Nintendo debuts 3DS image sharing tool in Japan, uploads your screengrabs to Twitter, Tumblr
Still waiting for Miiverse to show its hide on Nintendo's 3DS? Maybe the promise of more conventional social networking will tide you over. Thanks to a new web tool, Japanese 3DS owners can now share screenshots from Animal Crossing: New Leaf and Tomodachi Collection:New Life with their Twitter and Tumblr followers. The setup is pretty simple, giving users access to a basic upload interface through the 3DS' built-in web browser. Just pick an image, add a caption and watch your retweets roll in. Unfortunately, the tool doesn't work with just any image -- attempting to upload a shot taken with the 3DS camera gave us an error, which told us (via a rough translation) that the picture came from "incompatible software." The tool is written entirely in Japanese, but folks with a knack for Kanji can check it out at i.nintendo.net. Looking for a compatible game? We hear there's a bundle for that.
Filed under: Gaming, Internet, Nintendo
Via: Engadget Japanese
Source: Nintendo
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Officer fatally shot on MIT campus
WATERTOWN, Mass. (AP) ? One of two suspects in the Boston Marathon bombing is dead and a massive manhunt is underway for another, authorities said early Friday.
Residents of Watertown, a Boston suburb, have been advised to keep their doors locked and not let anyone in.
The Middlesex district attorney said the two men are suspected of killing a Massachusetts Institute of Technology police officer on campus late Thursday, then stealing a car at gunpoint and later releasing its driver unharmed. Hours earlier, police had released photos of the marathon bombing suspects and asked for the public's help finding them.
Authorities say the suspects threw explosives from the car as police followed it into Watertown. The suspects and police exchanged gunfire, and one of the suspects was critically injured and later died while the other escaped.
"We believe this to be a terrorist," Boston police Commissioner Ed Davis said. "We believe this to be a man who came here to kill people."
The FBI said it is working with local authorities to determine what happened.
The MIT shooting on the Cambridge campus Thursday night was followed by reports of gunfire and explosions in Watertown, about 10 miles west of Boston.
The MIT officer had been responding to report of a disturbance Thursday night when he was shot multiple times, according to a statement from the Middlesex district attorney's office and Cambridge police. It said there were no other victims.
In Watertown, witnesses reported hearing multiple gunshots and explosions at about 1 a.m. Friday. Dozens of police officers and FBI agents were in the neighborhood and a helicopter circled overhead.
State police spokesman David Procopio said, "The incident in Watertown did involve what we believe to be explosive devices possibly, potentially, being used against the police officers."
Boston cab driver Imran Saif said he was standing on a street corner at a police barricade across from a diner when he heard an explosion.
"I heard a loud boom and then a rapid succession of pop, pop, pop," he said. "It sounded like automatic weapons. And then I heard the second explosion."
He said he could smell something burning and advanced to check it out but area residents at their windows yelled at him, "Hey, it's gunfire! Don't go that way!"
MIT said right after the 10:30 p.m. shooting that police were sweeping the campus in Cambridge and urged people to remain indoors. They urged people urged to stay away from the Stata Building, a mixed-use building with faculty offices, classrooms and a common area.
Hours later, MIT, which has about 11,000 students, said the campus was clear but the shooter was still on the loose.
Source: http://news.yahoo.com/police-mit-suspect-tied-boston-marathon-bomb-082428095.html
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Neural activity in bats measured in-flight
Apr. 18, 2013 ? Animals navigate and orient themselves to survive -- to find food and shelter or avoid predators, for example. Research conducted by Dr. Nachum Ulanovsky and research student Michael Yartsev of the Weizmann Institute's Neurobiology Department, published today in Science, reveals for the first time how three-dimensional, volumetric, space is perceived in mammalian brains. The research was conducted using a unique, miniaturized neural-telemetry system developed especially for this task, which enabled the measurement of single brain cells during flight.
The question of how animals orient themselves in space has been extensively studied, but until now experiments were only conducted in two-dimensional settings. These have found, for instance, that orientation relies on "place cells" -- neurons located in the hippocampus, a part of the brain involved in memory, especially spatial memory. Each place cell is responsible for a spatial area, and it sends an electrical signal when the animal is located in that area. Together, the place cells produce full representations of whole spatial environments. Unlike the laboratory experiments, however, the navigation of many animals in the real world, including humans, is carried out in three dimensions. But attempts to expand the scope of experiments from two to three dimensions had encountered difficulties.
One of the more famous efforts in this area was conducted by the University of Arizona and NASA, in which they launched rats into space (aboard a space shuttle). However, although the rats moved around in zero gravity, they ran along a set of straight, one-dimensional lines. Other experiments with three-dimensional projections onto two-dimensional surfaces did not manage to produce volumetric data, either. The conclusion was that in order to understand movement in three-dimensional, volumetric space, it is necessary to allow animals to move through all three dimensions -- that is, to research animals in flight.
Ulanovsky chose to study the Egyptian fruit bat, a very common bat species in Israel. Because these are relatively large, the researchers were able to attach the wireless measuring system in a manner that did not restrict the bats' movements. Developing this sophisticated measuring system was a several-year effort. Ulanovsky, in cooperation with a US commercial company, created a wireless, lightweight (12 g, about 7% of the weight of the bat) device containing electrodes that measure the activity of individual neurons in the bat's brain.
The next challenge the scientists faced was adapting the behavior of their bats to the needs of the experiment. Bats naturally fly toward their destination -- for example, a fruit tree -- in a straight line. In other words, their normal flight patterns are one-dimensional, while the experiment required their flights to fill a three-dimensional space.
The solution was to be found in a previous study in Ulanovsky's group, which tracked wild fruit bats using miniature GPS devices. One of the discoveries was that when bats arrive at a fruit tree, they fly around it, utilizing the full volume of space surrounding the tree. To simulate this behavior in the laboratory -- an artificial cave equipped with an array of bat-monitoring devices -- the team installed an artificial "tree" made of metal bars and cups filled with fruit.
Measuring the activity of hippocampus neurons in the bats' brains revealed that the representation of three-dimensional space is similar to that in two dimensions: Each place cell is responsible for identifying a particular spatial area in the "cave" and sends an electrical signal when the bat is located in that area. Together, the population of place cells provides full coverage of the cave -- left and right, up and down.
A closer examination of the areas for which individual place cells are responsible provided an answer to a highly-debated question: Does the brain perceive the three dimensions of space as "equal," that is, does it sense the height axis in the same way as that of length or width? The findings suggest that each place cell responds to a spherical volume of space, i.e., the perception of all three dimensions is uniform. The researchers note that for those non-flying animals that essentially move in flat space, the different axes might not be perceived at the same resolution. It may be that such animals are naturally more sensitive to changes along the length and width axes than that of height. This question is of particular interest when it comes to humans because on the one hand, humans evolved from apes that moved in three-dimensional space when swinging from branch to branch, but on the other hand, modern, ground-dwelling humans generally navigate in two-dimensional space.
The findings provide new insights into some basic functions of the brain: navigation, spatial memory and spatial perception. To a large extent, this is due to the development of innovative technology that allowed the first glimpse into the brain of a flying animal. Ulanovsky believes that this trend, in which research is becoming more "natural," is the future wave of neuroscience. The neural basis of animal behavior will be investigated in laboratories that simulate natural conditions -- or even on animals in their natural habitats, carrying out their normal, day-to-day activities.
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The above story is reprinted from materials provided by Weizmann Institute of Science.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
Journal Reference:
- M. M. Yartsev, N. Ulanovsky. Representation of Three-Dimensional Space in the Hippocampus of Flying Bats. Science, 2013; 340 (6130): 367 DOI: 10.1126/science.1235338
Note: If no author is given, the source is cited instead.
Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.
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Wednesday, April 17, 2013
Carlos Arredondo, Peace Activist At Boston Marathon Who Lost Son In Iraq, Appears To Pinch Shut Victim's Artery (GRAPHIC PHOTO)
Carlos Arredondo came to the Boston Marathon to honor his son who was killed in Iraq. But after the explosions, the mourning father channeled his grief into heroism when he tended to wounds that resembled the ones that claimed his boy?s life.
Arredondo sat perched in the bleachers on Monday, American flags in hand, near the finish line with his wife to greet the National Guard runners and a suicide support group, organizations that honor his two dead sons, ABC reports.
Lance Cpl. Alexander S. Arredondo died in Iraq in 2004 in a firefight in Najaf and his other son, Brian, who battled years of depression after his brother died, committed suicide in 2011.
But once the mourning father, turned peace activist, saw the bloody carnage, he immediately ripped away the snow fence and scaffolding that separated him from the struggling victims and started helping the critically injured, the Portland Press Herald reports.
"My first reaction was to run toward the people," he told ABC. "There was so much commotion and a lot of people running away. I was one of the first to help people and God protected me. It was horrific."
In one stunning photo that?s become an iconic image of the incredible heroism that emerged, Arredondo appears to be pinching closed a severed artery from the thigh of a victim who lost both of his legs, according to NBC. He also used his clothes and towels to help keep the victims from bleeding out.
"I kept talking to him. I kept saying, 'Stay with me, stay with me,' " Arredondo told the Portland Press Herald.
Since his son was killed in Iraq, Arredondo has changed courses completely. He quit his full-time job and now believes his purpose is to honor the fallen and protest the war, according to The New York Times.
In the years following his 24-year-old son?s death in Iraq, Arredondo paraded a mobile memorial around, complete with a coffin filled with photos of Alexander and some of his favorite possessions.
?As long as there are Marines fighting and dying in Iraq,? he told The New York Times in 2007, ?I?m going to share my mourning with the American people.?
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Source: http://www.huffingtonpost.com/2013/04/16/carlos-arredondo-marathon-hero_n_3092134.html
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Research aims to settle debate over origin of Yellowstone volcano
Tuesday, April 16, 2013
A debate among scientists about the geologic formation of the supervolcano encompassing the region around Yellowstone National Park has taken a major step forward, thanks to new evidence provided by a team of international researchers led by University of Rhode Island Professor Christopher Kincaid.
In a publication appearing in last week's edition of Nature Geoscience, the URI team demonstrated that both sides of the debate may be right.
Using a state-of-the-art plate tectonic laboratory model, they showed that volcanism in the Yellowstone area was caused by severely deformed and defunct pieces of a former mantle plume. They further concluded that the plume was affected by circulation currents driven by the movement of tectonic plates at the Cascades subduction zone.
Mantle plumes are hot buoyant upwellings of magma inside the Earth. Subduction zones are regions where dense oceanic tectonic plates dive beneath buoyant continental plates. The origins of the Yellowstone supervolcano have been argued for years, with sides disagreeing about the role of mantle plumes.
According to Kincaid, the simple view of mantle plumes is that they have a head and a tail, where the head rises to the surface, producing immense magma structures and the trailing tail interacts with the drifting surface plates to create a chain of smaller volcanoes of progressively younger age. But Yellowstone doesn't fit this typical mold. Among its oddities, its eastward trail of smaller volcanoes called the Snake River Plain has a mirror-image volcanic chain, the High Lava Plain, that extends to the west. As a result, detractors say the two opposite trails of volcanoes and the curious north-south offset prove the plume model simply cannot work for this area, and that a plates-only model must be at work.
To examine these competing hypotheses, Kincaid, former graduate student Kelsey Druken, and colleagues at the Australian National University built a laboratory model of the Earth's interior using corn syrup to simulate fluid-like motion of Earth's mantle. The corn syrup has properties that allow researchers to examine complex time changing, three-dimensional motions caused by the collisions of tectonic plates at subduction zones and their effect on unsuspecting buoyant plumes.
By using the model to simulate a mantle plume in the Yellowstone region, the researchers found that it reproduced the characteristically odd patterns in volcanism that are recorded in the rocks of the Pacific Northwest.
"Our model shows that a simple view of mantle plumes is not appropriate when they rise near subduction zones, and that these features get ripped apart in a way that seems to match the patterns in magma output in the northwestern U.S. over the past 20 million years," said Kincaid, a professor of geological oceanography at the URI Graduate School of Oceanography. "The sinking plate produces a flow field that dominates the interaction with the plume, making the plume passive in many ways and trapping much of the magma producing energy well below the surface. What you see at the surface doesn't look like what you'd expect from the simple models."
The next step in Kincaid's research is to conduct a similar analysis of the geologic formations in the region around the Tonga subduction zone and the Samoan Islands in the South Pacific, another area where some scientists dispute the role of mantle plumes.
According to Kincaid, "A goal of geological oceanography is to understand the relationship between Earth's convecting interior and our oceans over the entire spectrum of geologic time. This feeds directly into the very pressing need for understanding where Earth's ocean-climate system is headed, which clearly hinges on our understanding of how it has worked in past."
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University of Rhode Island: http://www.uri.edu
Thanks to University of Rhode Island for this article.
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Source: http://www.labspaces.net/127764/Research_aims_to_settle_debate_over_origin_of_Yellowstone_volcano
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