Hipster, surfer or biker? Computers may soon be able to tell the difference: Scientists in California are developing an algorithm that uses group pictures to determine to which of these groups, or urban tribes, you belong. So far, the algorithm is 48% accurate on average, much better than chance but not yet to level of humans.
Gaming could become much more realistic with new...
Univ. of Oregon chemists studying the structure of...
An ultrasonic microscope emits a high frequency...
The ChemCam laser instrument aboard NASA’s Curiosity rover fired its 100,000th shot recently, chronicling its adventures on Mars with a coffee-table-book’s worth of spectral data that might rival snapshots gathered during a long and satisfying family vacation here on Earth. ChemCam zaps rocks with a high-powered laser to determine their composition and carries a camera that can survey the Martian landscape.
Using the powerful eye of NASA's Hubble Space Telescope, two teams of scientists have found faint signatures of water in the atmospheres of five distant planets. The presence of atmospheric water was reported previously on a few exoplanets orbiting stars beyond our solar system, but this is the first study to conclusively measure and compare the profiles and intensities of these signatures on multiple worlds.
NASA said Monday that the Hubble Space Telescope is the best bet for figuring out whether Comet ISON disintegrated during its brush with the sun last week. A pair of solar observatories saw something emerge from around the sun following ISON's close approach on Thanksgiving Day. But scientists don't yet know whether the spot of light was merely the comet's shattered remains or what's left of its icy nucleus.
Scientists are interested in how the shape of Greenland’s hidden bedrock affects how ice moves, and have been employing a powerful radar technique that has been used in Antarctica to see through thousands of feet of ice. Mapping this terrain a key factor in making predictions about the future of these massive ice reservoirs and their contribution to sea level rise in a changing climate.
Lidar rangefinders gauge depth by emitting short bursts of laser light and measuring the time it takes for reflected photons to arrive back and be detected. In Science, researchers from Massachusetts Institute of Technology’s Research Laboratory of Electronics describe a new lidar-like system that can gauge depth when only a single photon is detected from each location.
Los Alamos National Laboratory scientists have advanced a magnetic resonance imaging (MRI) technology that may provide a breakthrough for screening liquids at airport security. They’ve added low-power x-ray data to the mix, and as a result have unlocked a new detection technology.
A $500 “nanocamera” that can operate at the speed of light has been developed by researchers in the Massachusetts Institute of Technology Media Lab. The 3-D camera could be used in medical imaging and collision-avoidance detectors for cars, and to improve the accuracy of motion tracking and gesture-recognition devices used in interactive gaming.
Orbiting telescopes got the fireworks show of a lifetime last spring when they spotted what is known as a gamma ray burst in a far-off galaxy. It’s not an unusual occurrence, but this one set records. Had it been closer, Earth would have been toast. But because this blast was 3.7 billion light-years away, mankind was spared.
It’s not x-ray vision, but you could call it infrared vision. A Univ. at Buffalo-led research team has developed a technique for “seeing through” a stack of graphene sheets to identify and describe the electronic properties of each individual sheet, even when the sheets are covering each other up.
Univ. of Michigan researchers are the first to use brain imaging procedures to track the clinical action of pregabalin, a drug known by the brand name Lyrica that is prescribed to patients suffering from fibromyalgia and neuropathic pain. The study suggests role of brain imaging in creating personalized treatment of chronic pain.
Computer scientists have developed a technique that uses anisotropic triangles (triangles with sides that vary in length depending on their direction) to make 3-D images. The technique finds a practical application of the Nash embedding theorem, which was named after mathematician John Forbes Nash Jr., subject of the film "A Beautiful Mind".
A new study by Univ. of Arizona doctoral student Jay Sanguinetti indicates that our brains perceive objects in everyday life of which we may never be aware. The finding challenges currently accepted models about how the brain processes visual information.
Tiny electrical wires protrude from some bacteria and contribute to rock and dirt formation. Pacific Northwest National Laboratory researchers studying the protein that makes up one such wire have determined the protein's structure and have shown that the protein's shape and form suggest possible ways for the bacteria to shuttle electrons along the nanowire.
Iris scans, fingerprint scans, facial and voice recognition are tools that improve security while making our lives easier, says Stephen Elliott, director of international biometric research at Purdue Univ. His basement lab is a place where emerging biometric technologies are tested for weaknesses before they can go mainstream.
The Hubble Space Telescope has discovered a six-tailed asteroid in the asteroid belt between the orbits of Mars and Jupiter. Scientists say they've never seen anything like it. Incredibly, the comet-like tails change shape as the asteroid sheds dust. The streams have occurred over several months.
The handheld mortar has long been a staple for the U.S. Marine Corps, and recently the weapon got a major boost as combat instructors at Marine Corps Base Quantico successfully conducted a live-fire demonstration of a new mortar sight, which provides users with a dramatic increase in target accuracy, most notably at night.
Scientists have developed a 3D filming technique that has brought fresh insights into the behavior of malaria sperm. They were able to see that malaria sperm move in an irregular, lopsided corkscrew motion. Understanding how malaria parasites mate could pave the way for improved prevention and control of this deadly disease.
Researchers at the Univ. of Chicago are developing computer-aided diagnosis and quantitative image analysis methods for mammograms, ultrasounds and magnetic resonance images to identify specific tumor characteristics, including size, shape and sharpness
Most people know about ultrasound through its role in prenatal imaging: those grainy, grey outlines of junior constructed from reflected sound waves. A new technology called an "acoustic diode” that would transmit sound in one direction may dramatically improve future ultrasound images by changing the way sound waves are transmitted.
Doom may be averted for the Smith Cloud, a gigantic streamer of hydrogen gas that is on a collision course with the Milky Way Galaxy. Astronomers have discovered a magnetic field deep in the cloud’s interior, which may protect it during its meteoric plunge into the disk of our galaxy. This discovery could help explain how so-called high velocity clouds remain mostly intact during their mergers with the disks of galaxies.
Scientists have found a planet way out in the cosmos that's close in size and content to Earth, an astronomical first. But hold off on the travel plans. This rocky world is so close to its sun that it's at least 2,000 degrees hotter than here, almost certainly too hot for life.
The increasingly powerful microscopes used in biomedical imaging provide biologists with 3-D images of hundreds of cells, and cells in these images are often layered on each other. Under these conditions, it is impossible for traditional computational methods to determine the cells' properties. Researchers have developed a virtual tool that can analyze dozens of images in just an hour. This works out to hundreds of cells.
Gas and oil deposits in shale have no place to hide from an Oak Ridge National Laboratory technique that provides an inside look at pores and reveals structural information potentially vital to the nation’s energy needs. The research could clear the path to the more efficient extraction of gas and oil from shale.
The effort to better understand nanoscale properties has produced large-scale government and industrial research organizations, such as the National Nanotechnology Initiative (NNI) and the Nanoelectronics Research Initiative (NRI). These efforts, each funded in the billion-dollar range, depend on the ability of researchers from around the world to effectively use the analytical tools.
At a cosmologically crisp 1 K (-458 F), the Boomerang Nebula is the coldest known object in the Universe—colder, in fact, than the faint afterglow of the Big Bang, which is the natural background temperature of space. Astronomers using the Atacama Large Millimeter/submillimeter Array telescope have taken a new look at this ghostly object to learn more about its frigid properties and to determine its true shape.
- Page 1