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Shopping Center Tracking System Condemned by Civil Rights Campaigners


hypnosec writes "Civil rights campaigners have spoken out against a technology used by several shopping centers in the UK to track consumers using their mobile signals. The shopping centers claim that the technology helps them provide better services to consumers and retailers without compromising privacy. The system, called the Footpath, allows them to know how people are spending time in a shopping center, which spots they visit the most and even the route they take while walking around. Several consumer and civil rights groups, including Big Brother Watch, say consumers must be given a choice on whether they want their movement tracked or not." We covered a similar tracking system here in the U.S. last month.


Is the Canadian Arctic the Future of Astronomy?


sciencehabit writes "Frigid temperatures, dry air, and endless nights should, in theory, make the polar regions top spots for ground-based optical astronomy. So far, Antarctica has been getting all the action, with a handful of optical telescopes peering into the sky from the icy continent. But a new study indicates that the Canadian high Arctic is also a good spot for ground-based optical astronomy. In fact, the great white north offers some practical advantages over the Antarctic."


Ohm's Law Survives To the Atomic Level


Hugh Pickens writes "Moore's Law, the cornerstone of the semiconductor industry, may get a reprieve from its predicted demise. As wires shrink to just nanometers in diameter, their resistivity tends to grow exponentially, curbing their usefulness as current carriers. But now a team of researchers has shown that it is possible to fabricate low-resistivity nanowires at the smallest scales imaginable by stringing together individual atoms in silicon as small as four atoms (about 1.5 nanometers) wide and a single atom tall. The secret is to introduce phosphorus along that line because each phosphorus atom donates an electron to the silicon crystal, which promotes electrical conduction. They then encase the nanowires entirely in silicon, which makes the conduction electrons more immune to outside influence. By embedding phosphorus atoms within a silicon crystal with an average spacing of less than 1 nanometer, the team achieved a diameter-independent resistivity, which demonstrates ohmic scaling to the atomic limit. 'That moves the wires away from the surfaces and away from other interfaces,' says physicist says Michelle Simmons. 'That allows the electron to stay conducting and not get caught up in other interfaces.' The wires have the carrying capacity of copper, indicating that the technique might help microchips continue their steady shrinkage over time and may even extend the life of Moore's Law. 'Fundamentally, we have shown that we can maintain low resistivities in doped silicon wires down to the atomic scale,' says Simmons, adding that it may not be ready for production now, but, 'who knows 20 years from now?'"


Iran Developing 'Halal' Domestic Intranet


An anonymous reader writes "The WSJ reports that Iran is beginning a crackdown on Internet use by its citizens, creating new blocks against foreign content and stepping up surveillance of browsing habits. Internet cafes in Iran have 15 days to set up security cameras and start collecting information on customers, and people are finding it increasingly difficult to use social networking sites. The new restrictions are likely being implemented now to head off dissent and protests about the upcoming parliamentary elections. According to the article, 'The network slowdown likely heralds the arrival of an initiative Iran has been readying—a "halal" domestic intranet that it has said will insulate its citizens from Western ideology and un-Islamic culture, and eventually replace the Internet. This week's slowdown came amid tests of the Iranian intranet, according to domestic media reports that cited a spokesman for a union of computer-systems firms. He said the intranet is set to go live within a few weeks.'"


Are Brain Teasers Good Hiring Criteria?


theodp writes "Your brain teaser prowess may win you a job at Google, but the folks at 37signals don't hire programmers based on puzzles, API quizzes, math riddles, or other parlor tricks. 'The only reliable gauge I've found for future programmer success,' explains 37signals' David Heinemeier Hansson, 'is looking at real code they've written, talking through bigger picture issues, and, if all that is swell, trying them out for size.'"
Those of you who have hired employees: have you seen correlation between interview puzzle success and job competency? How should an interviewee best handle these questions?


Researchers Create First Genetically Modified Monkeys


Several readers tipped news that U.S. scientists have created 'chimeric' monkeys, made with genetic material from as many as six different genomes (abstract). This is significant because it's the first time researchers have used the technique on a primate. From the article:
"Researchers took very early stem cells, called totipotent stem cells, from separate developing embryos and basically glued them together, implanting the mixed embryos into surrogate mother monkeys. The cells — from totally different sources — didn’t fuse, but worked together in harmony, forming fully fledged, normal, healthy animals. ... The key here was the scientists’ use of totipotent cells, so named for their ability to differentiate into the totality of possible cells in an animal. A totipotent cell can give rise to a whole animal. Pluripotent stem cells, the type most frequently used in stem cell research, can differentiate into any cell in the body, but can’t become a whole animal, and can’t make other embryonic tissues like a placenta. Totipotent stem cells are only derived from the very earliest stages of a zygote, mere days after fertilization. In humans, totipotent cells differentiate into pluripotent cells after four days."