skade88 writes "NPR is reporting on a study in which the author claims to have found the formula to predict the average life span of members of a species. It does not apply to specific individuals of that species, only to the average life span of members of the species as a whole. From the article: 'It's hard to believe that creatures as different as jellyfish and cheetahs, daisies and bats, are governed by the same mathematical logic, but size seems to predict lifespan. The formula seems to be nature's way to preserve larger creatures who need time to grow and prosper, and it not only operates in all living things, but even in the cells of living things. It tells animals for example, that there's a universal limit to life, that though they come in different sizes, they have roughly a billion and a half heart beats; elephant hearts beat slowly, hummingbird hearts beat fast, but when your count is up, you are over.'"
Follow Slashdot stories on Twitter
MatthewVD writes "Infrared cameras on satellites and night vision goggles could soon use lasers to cool their components. According to the study published in Nature, researchers in Singapore were able to cool the semiconductor cadmium sulfide from 62 degrees fahrenheit to -9 degrees by focusing a green laser on it and making it fluoresce and lose energy as light. Since they require neither gas nor moving parts, they can be more compact, free from vibration and not prone to mechanical failure."
Zothecula writes "NASA and the Canadian Space Agency (CSA) have begun practicing satellite refueling in space on a test bed outside the International Space Station (ISS). In a series of tests that started on January 14 and are scheduled to continue until the 25th, the two space agencies are using the Robotic Refueling Module (RRM) and Canada's Special Purpose Dexterous Manipulator, or Dextre, robot to carry out simulated refueling operations. The purpose of these tests is to develop refueling methods aimed at extending the life of satellites and reducing the amount of space debris orbiting the Earth."
An anonymous reader writes "The Security Ledger writes that the expulsion of Ahmed Al-Khabaz, a 20-year-old computer sciences major at Dawson College in Montreal, has exposed a yawning culture gap between academic computer science programs and the contemporary marketplace for software engineering talent. In an opinion piece in the Montreal Gazette on Tuesday, Dawson computer science professor Alex Simonelis said his department forbids hacking as an 'extreme example' of 'behavior that is unacceptable in a computing professional.' And, in a news conference on Tuesday, Dawson's administration stuck to that line, saying that Al-Khabaz's actions show he is 'no longer suited for the profession.' In the meantime, Al-Khabaz has received more than one job offer from technology firms, including Skytech, the company that makes Omnivox. Chris Wysopal, the CTO of Veracode, said that the incident shows that 'most computer science departments are still living in the pre-Internet era when it comes to computer security.' 'Computer Science is taught in this idealized world separate from reality. They're not dealing with the reality that software has to run in a hostile environment,' he said. 'Teaching students how to write applications without taking into account the hostile environment of the Internet is like teaching architects how to make buildings without taking into account environmental conditions like earthquakes, wind and rain,' Wysopal said."
angry tapir writes "An international team of astronomers has used the CSIRO-run Australia Telescope Compact Array to measure the cooling of the universe since the Big Bang. According to the CSIRO, it is the most accurate reading yet of how hot the universe used to be. When the universe was half its current age its temperature was -267.92 degrees Celsius (5.08 Kelvin), the team found, which is warmer than today's universe (-270.27 degrees Celsius)."
An anonymous reader writes "Linux kernel developer veteran Alan Cox has lashed out at Red Hat's recent release of Fedora 18. Cox posted comments to his Google+ page saying 'Fedora 18 seems to be the worst Red Hat distro I've ever seen.' He encountered numerous problems with Fedora 18 and then decided to switch to Ubuntu."
CowboyRobot writes "The metaphors and conventions of mobile apps on phones and tablets are now driving the design of desktop software. For example, dialog boxes in typical desktop software used to be complex, requiring lots of interaction. But these are now typically much simpler with far fewer options in a single pane. Drop-down menus are evolving, too. The former style of multiple cascading menus is being replaced. Drop-downs today have a smaller range of options (due to mobile screens being so small and the need to have the entries big enough that a finger touch can select it), and they never use the cascading menu. In Web-based apps, the mobile metaphors are finding greater traction as well. One need only look at the new Google Mail (GMail) interface and see how it's changed over the last year to view the effects of this new direction: All icons are monochrome, the number of buttons is very limited, and there's a More button that keeps the additional options off the main screen."
sciencehabit writes "Male scientists — especially at the upper echelons of the profession — are far more likely than women to commit misconduct. That's the bottom line of a new analysis by three microbiologists of wrongdoing in the life sciences in the United States. Ferric Fang of the University of Washington, Seattle; Joan Bennett of Rutgers University; and Arturo Casadevall of Albert Einstein College of Medicine combed through misconduct reports on 228 people released by the U.S. Office of Research Integrity (ORI) over the last 19 years. They then compared the gender balance — or imbalance, in this case — against the mix of male and female senior scientists and trainees to gauge whether misconduct was more prevalent among men. A remarkable 88% of faculty members who committed misconduct were men, or 63 out of 72 individuals. The number of women in that group was one-third of what one would expect based on female representation in the life sciences."
Titus Andronicus writes "fuse-exfat, a GPLv3 implementation of the exFAT file system for Linux, FreeBSD, and OS X, has reached 1.0 status, according to an announcement from Andrew Nayenko, the primary developer. exFAT is a file system designed for sneaker-netting terabyte-scale files and groups of files on flash drives and memory cards between and among Windows, OS X, and consumer electronics devices. It was introduced by Microsoft in late 2006. Will fuse-exfat cut into Microsoft's juicy exFAT licensing revenue? Will Microsoft litigate fuse-exfat's developers and users into patent oblivion? Will there be a DKMS dynamic kernel module version of the software, similar to the ZFS on Linux project? All that remains to be seen. ReadWrite, The H, and Phoronix cover the story."
Un pobre guey writes "'To understand the impact technology is having on middle-class jobs in developed countries, the AP analyzed employment data from 20 countries; tracked changes in hiring by industry, pay and task; compared job losses and gains during recessions and expansions over the past four decades; and interviewed economists, technology experts, robot manufacturers, software developers, entrepreneurs and people in the labor force who ranged from CEOs to the unemployed.' Their findings: Technology has consistently reduced the number of manufacturing jobs for 30 years; people with repetitive jobs have been easy to replace in the past, and task jugglers like managers and supervisors will be likely targets in the future; companies in the S&P 500 have expanded their business and increased profits, but reduced staffing, thanks to tech; and startups are launching much more easily these days. The response to the article includes the dutifully repeated bad-government-is-at-fault and don't-worry-it's-like-the-Industrial-Revolution memes. But what if this time it's different? What if delegating everything to machines is a radical and fundamental new change in the course of human history?"
SternisheFan sends news of researchers who encoded an MP3, a PDF, a JPG, and a TXT file into DNA, along with another file that explains the encoding. The researchers estimate the storage density of this technique at 2.2 petabytes per gram (abstract). "We knew we needed to make a code using only short strings of DNA, and to do it in such a way that creating a run of the same letter would be impossible. So we figured, let's break up the code into lots of overlapping fragments going in both directions, with indexing information showing where each fragment belongs in the overall code, and make a coding scheme that doesn't allow repeats. That way, you would have to have the same error on four different fragments for it to fail – and that would be very rare," said one of the study's authors. "We've created a code that's error tolerant using a molecular form we know will last in the right conditions for 10 000 years, or possibly longer," said another.
SonicSpike writes "AT&T U-verse customers are reporting this morning that an outage that began Monday and is affecting at least 15 states is still not resolved. Some customers were told this morning that the problem will not be fixed for at least 24 hours."
astroengine writes "Scientists have long puzzled over why the surface of the sun is cooler than its corona, the outer hazy atmosphere visible during a solar eclipse. Now, thanks to a five-minute observation by a small, but very high-resolution ultraviolet telescope, they have some answers. Hi-C, which was launched aboard a suborbital rocket to study the sun without interference from Earth's atmosphere, revealed interwoven magnetic fields braided like hair. When the braids relaxed, they released energy, heating the corona (abstract). 'I had no idea we would see structures like that in the corona. Seeing these braids was very new to me,' astrophysicist Jonathan Cirtain with NASA's Marshall Space Flight Center in Huntsville, Ala., told Discovery News."
An anonymous reader writes "Yesterday in a post at the White House website, the U.S. government announced that June 1-2 would be the National Day of Civic Hacking. 'Civic Hacking Day is an opportunity for software developers, technologists, and entrepreneurs to unleash their can-do American spirit by collaboratively harnessing publicly-released data and code to create innovative solutions for problems that affect Americans.' It will be a joint project with Random Hacks of Kindness, Code for America. Activities are being planned in many cities across the country, and you can also sign up to host your own event. It's nice to see the government use the word 'hacking' in a positive way, since most uses of the term these days involve malicious activity."
Wayne Rasanen's Decatxt chording keyboard may be new and exciting to him, and he says has a patent on it so apparently the USPTO found it novel and original, but it's not the first chording keyboard by many long shots. The idea has been around (at least) since 1968. And let's not forget Braille chording keyboards, as described in a 1992 IEEE paper. And if you have an iPhone and want to experiment with a virtual Braille chording keyboard, there's an app for that. Maybe we're just jaded. Or maybe we've known a lot of blind people who used one-handed Braille chording keyboards to type as fast with one hand as a sighted person using a QWERTY keyboard and two hands. So it's hard for us to get excited about a chording keyboard. Be that as it may, we wish Wayne Rasanen all the luck in the world as he brings his invention to market.