Cell Phones and Aluminum Siding and Metal Framed Homes - 0 views
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anonymous on 26 Mar 09How to get better cell phone reception in a steel frame home or home with aluminum siding.
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Digital Public Library of America - 0 views
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The vision of a national digital library has been circulating among librarians, scholars, educators, and private industry representatives since the early 1990s, but it has not yet materialized. Efforts led by a range of organizations, including the Library of Congress, HathiTrust, and the Internet Archive, have successfully built resources that provide books, images, historical records, and audiovisual materials to anyone with Internet access. Many universities, public libraries, and other public-spirited organizations have digitized materials that could be brought together under the frame of the DPLA, but these digital collections often exist in silos.
The Amygdala Made Me Do It - NYTimes.com - 0 views
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"The 18th-century philosopher David Hume (much quoted by Mr. Lehrer) didn't have an M.R.I. scanner at his disposal, but he framed the question in much the same way. His major work, "A Treatise of Human Nature," explored the ways in which habit, or "custom," rules our lives. Hume's experiments with perception - how we respond to colors, distance, numerical sets - prefigure the rigorous science of Professor Kahneman. His intent was to show us "the natural infirmity and unsteadiness both of our imagination and senses." Consciousness, like philosophy itself, stands on a "weak foundation.""
Kaggle, we're making data science a sport - 0 views
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Kaggle is a platform for data prediction competitions that allows organizations to post their data and have it scrutinized by the world's best data scientists. In exchange for a prize, winning competitors provide the algorithms that beat all other methods of solving a data crunching problem. Most data problems can be framed as a competition.
Trafton Drew: Why Even Radiologists Can Miss A Gorilla Hiding In Plain Sight - 0 views
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"He then asked a bunch of radiologists to review the slides of lungs for cancerous nodules. He wanted to see if they would notice a gorilla the size of a matchbook glaring angrily at them from inside the slide. But they didn't: 83 percent of the radiologists missed it, Drew says. This wasn't because the eyes of the radiologists didn't happen to fall on the large, angry gorilla. Instead, the problem was in the way their brains had framed what they were doing. They were looking for cancer nodules, not gorillas. "They look right at it, but because they're not looking for a gorilla, they don't see that it's a gorilla," Drew says. In other words, what we're thinking about - what we're focused on - filters the world around us so aggressively that it literally shapes what we see"
How to break into science writing using your blog and social media (#sci4hels) | The SA... - 0 views
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"It is important to be aware that 20th century media ecosystem is a very unusual aberration in the way people communicated throughout history. Means of production were expensive. Very few people could afford to own printing presses, radio and TV studios, etc. Running all that complicated equipment required technical expertise and professional training. Thus media became locked up in silos, hierarchical, broadcast-only with little-to-none (and then again centrally controlled) means for feedback. There was a wealthy, vocal minority that determined what was news, and how to frame it, and the vast majority was consuming the news in silence"
@biogarage Marcelo Coelo, Skylar Tibbits: MIT researchers unveil a smarter way to 3-D p... - 0 views
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"MIT-based researchers and instructors Marcelo Coelho and Skylar Tibbits teamed up to tackle this very problem. Working under a grant from Ars Electronica, the pair conceived of a whole new way to do 3-D printing. Hyperform is a new strategy for designing and printing large objects irrespective of a printer's bed size. So not only can you print out that chair at home, you can also print a table, bed frame, and everything else you need to furnish a bedroom. The solution is breathtakingly simple. By merely folding the object you want to print, you can jig it to fit into a small-scale printer. In Tibbits and Coelho's project, the object is rendered in 1-D--a line--and endlessly folded into a space-filling curve proportioned to the printer's cubic dimensions. (The designers partnered with Formlabs and iterated the process using a Form 1 tabletop printer.) When the object is exhumed from the printer bed, it doesn't at all resemble its final shape. Rather, it's a dense cluster of thin but sturdy polymer links packaged in a three-dimensional puzzle that can be intuitively assembled"
'Roy Taylor, Iain Frame Reversing' type 2 diabetes? | Quality in Care - 0 views
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"The results are indeed worthy of attention, with Prof Taylor's team finding that in an early stage clinical trial of 11 people who were put on a diet of just 600 calories As written about in Dr Ben Goldacre's latest Bad Science column, producing a pattern from experimental data to come to a conclusion can be a 'magical' experience, but medicine is an 'imperfect art'. "We all know one atom of experience isn't enough to spot a pattern." writes Goldacre, "But when you put lots of experiences together and process that data, you get new knowledge.""
Scientists find an equation for materials innovation - 0 views
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By reworking a theory first proposed by physicists in the 1920s, the researchers discovered a new way to predict important characteristics of a new material before it's been created. The new formula allows computers to model the properties of a material up to 100,000 times faster than previously possible and vastly expands the range of properties scientists can study. "The equation scientists were using before was inefficient and consumed huge amounts of computing power, so we were limited to modeling only a few hundred atoms of a perfect material," said Emily Carter, the engineering professor who led the project. "But most materials aren't perfect," said Carter, the Arthur W. Marks '19 Professor of Mechanical and Aerospace Engineering and Applied and Computational Mathematics. "Important properties are actually determined by the flaws, but to understand those you need to look at thousands or tens of thousands of atoms so the defects are included. Using this new equation, we've been able to model up to a million atoms, so we get closer to the real properties of a substance." By offering a panoramic view of how substances behave in the real world, the theory gives scientists a tool for developing materials that can be used for designing new technologies. Car frames made from lighter, strong metal alloys, for instance, might make vehicles more energy efficient, and smaller, faster electronic devices might be produced using nanowires with diameters tens of thousands of times smaller than that of a human hair.
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Princeton engineers have made a breakthrough in an 80-year-old quandary in quantum physics, paving the way for the development of new materials that could make electronic devices smaller and cars more energy efficient.
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