Science & Technology
Thu, 09 Feb 2017 14:11 UTC
"The obtained filter material by far exceeds all existing analogues in its ability to stop the most dangerous aerosol particles such as viruses, toxins, allergens. This technology could usher in a wide variety of protective materials for medical, military and other purposes," Grigoryev explained.
University of Virginia
Fri, 20 Jan 2017 11:46 UTC
Children who display early disruptive behaviors such as being impulsive, oppositional and/or aggressive are at risk for short- and long-term negative outcomes - even being expelled from preschool. According to the study's lead author, Amanda Williford, a research associate professor at UVA's Curry School of Education, research has shown that if these children can form a strong, positive relationship with their teachers, they tend to show better social-emotional and behavioral skills over time. The reality, however, is that children who are disruptive are much more likely to have conflictual teacher-child interactions.
Wed, 08 Feb 2017 21:32 UTC
The findings, published in the Astrophysical Journal Letters, concern 'habitable zones', the region around a star where conditions could potentially allow life-sustaining liquid water.
The research has implications for the recently-discovered Proxima b planet in the "habitable zone" of red dwarf, Proxima Centauri. Proxima b, which is 1.3 times the size of Earth, was previously found to be the planet most likely to harbor life.
Tue, 07 Feb 2017 19:22 UTC
Wed, 08 Feb 2017 19:10 UTC
Google's neural networks have achieved the dream of CSI viewers everywhere: the company has revealed a new AI system capable of "enhancing" an eight-pixel square image, increasing the resolution 16-fold and effectively restoring lost data.
The neural network could be used to increase the resolution of blurred or pixelated faces, in a way previously thought impossible; a similar system was demonstrated for enhancing images of bedrooms, again creating a 32x32 pixel image from an 8x8 one.
Google's researchers describe the neural network as "hallucinating" the extra information. The system was trained by being shown innumerable images of faces, so that it learns typical facial features. A second portion of the system, meanwhile, focuses on comparing 8x8 pixel images with all the possible 32x32 pixel images they could be shrunken versions of.
Wed, 08 Feb 2017 16:42 UTC
A study published this week in Nature Communications led by the DNA testing company Ancestry.com presents exactly this kind of bird's eye view. Last month, Ancestry surpassed 3 million customers in its DNA databases. That's an awful lot of DNA, and now the company has set its sites on figuring out exactly what it might learn from all of it.
In the new study, Ancestry's scientists set out to build a picture of how North America's population moved across the country over the past few hundred years. Using genotype data from over 700,000 individuals who have purchased the company's DNA kits, scientists created a network of genetically-identified relationships and then used network analysis techniques to identify clusters of individuals.
British Psychological Society
Mon, 06 Feb 2017 14:26 UTC
The review authors, Graham Davey and Frances Meeten at the University of Sussex and the Institute of Psychiatry, Psychology and Neuroscience, explain that what gets many pathological worriers worrying in the first place is that they seem to be highly vigilant to any sources of threat and danger, and if there's any ambiguity about whether a situation is threatening or not, they will tend to interpret it as being dangerous. If they haven't yet heard from their daughter today, for instance, the problem worrier will not only notice this fact, they will also contemplate that it's because she's in trouble, rather than simply busy.
British Psychological Society
Wed, 08 Feb 2017 14:17 UTC
Past research that's looked at trait changes from adolescence to mid-life has shown there tends to be a moderate amount of stability, so too research that's looked at changes from mid-life into old age. Put these two sets of data together and you might expect to see at least some personality stability across an entire lifespan. Your classmates probably won't have changed completely.
When the activity of the sun changes, it has direct effects on the earth. For example, when the sun is relatively inactive, the amount of a type of carbon called carbon-14 increases in the earth's atmosphere. Because carbon in the air is absorbed by trees, carbon-14 levels in tree rings actually reflect solar activity and unusual solar events in the past. The team took advantage of such a phenomenon by analyzing a specimen from a bristlecone pine tree, a species that can live for thousands of years, to look back deep into the history of the sun.
"We measured the 14C levels in the pine sample at three different laboratories in Japan, the US, and Switzerland, to ensure the reliability of our results," A. J. Timothy Jull of the University of Arizona says. "We found a change in 14C that was more abrupt than any found previously, except for cosmic ray events in AD 775 and AD 994, and our use of annual data rather than data for each decade allowed us to pinpoint exactly when this occurred."
Researcher Richard Spalding and several of his colleagues at Sandia National Laboratories recently set out to study this strange phenomenon, and in a study just published to the journal Scientific Reports, they announce that the sounds are likely created through light.
Meteor fireballs sometimes pulse with light many times brighter than the full Moon, and these blasts can briefly heat the surfaces of objects many miles away. Such sudden temperature changes can actually create sound.
"We suggest that each pulse of light can heat the surfaces of natural dielectric transducers," Spalding and his colleagues write. "The surfaces rapidly warm and conduct heat into the nearby air, generating pressure waves. A succession of light-pulse-produced pressure waves can then manifest as sound to a nearby observer."