1sockchuck writes "It was a bad week to be a piece of electrical equipment inside a major data center. There have been five major incidents in the past week in which generator or UPS failures have caused data center power outages that left customers offline. Generators were apparently the culprit in a Rackspace outage in Dallas and a fire at Fisher Plaza in Seattle (which disrupted e-commerce Friday), while UPS units were cited in brief outages at Equinix data centers in Sydney and Paris on Thursday and a fire at 151 Front Street in Toronto early Sunday. Google App Engine also had a lengthy outage Thursday, but it was attributed to a data store failure."

Oracle Goddess writes "Sony filed a patent for a system where a camera can dynamically map any real world object for use in a video game. The patent states that the objects 'include items such as coffee mugs, drinking glasses, books, bottles, etc.' While these are given as examples, the object mapping system is not limited to those objects; it can identify any three dimensional object. The system looks similar to Microsoft's Project Natal, but instead of driving with an imaginary steering wheel, players can use an everyday item like a plate. Although this may seem a bit silly at first, the eventual uses for such a system could be wide-ranging and lead to novel and useful controllers for all sorts of systems and applications."

Well, the inevitable hacking of Apple's latest flavor of iPhone has happened. Named "purplera1n," the tool will only allow installation of unauthorized applications instead of a full unlock. "The purplera1n jailbreak will free your iPhone from the limitations imposed on it by AT&T and Apple. After jailbreaking, a user will be able to customize the iPhone with home-screen wallpapers and third-party ringtones. But the biggest advantage of jailbreaking is the support of unapproved apps such as iBlackList (blacklists and whitelists for contacts) and many others."

Tim O'Reilly wrote in Forbes a while back that he thinks the Kindle only has another two or three years of life left, unless Amazon wises up and embraces open standards. He came to this conclusion, in part, because of his experience deciding how to publish documents on the web back in the mid-1990s. "You see, I'd recently been approached by the folks at the Microsoft Network. They'd identified O'Reilly as an interesting specialty publisher, just the kind of target that they hoped would embrace the Microsoft Network (or MSN, as it came to be called). The offer was simple: Pay Microsoft a $50,000 fee plus a share of any revenue, and in return it would provide this great platform for publishing, with proprietary publishing tools and file formats that would restrict our content to users of the Microsoft platform. The only problem was we'd already embraced the alternative: We had downloaded free Web server software and published documents using an open standards format. That meant anyone could read them using a free browser. While MSN had better tools and interfaces than the primitive World Wide Web, it was clear to us that the Web's low barriers to entry would help it to evolve more quickly, would bring in more competition and innovation, and would eventually win the day."

NicApicella writes "My new system has two sparklin' SATA drives which I would like to mirror. After having been burned by a not-so-cheap, dedicated RAID controller, I have been pointed to software RAID solutions. I now stand in front of two choices for setting up my RAID: a Windows 7 RC software RAID or a hardware RAID done by the cheap integrated RAID controller of my motherboard. Based on past experiences, I have decided that only my data is worth saving — that's why the RAID should mirror two disks (FAT32) that are not the boot disk (i.e. do not contain an OS or any fancy stuff). Of course, such a setup should secure my data; should a drive crash, I want the system up and running in no time. Even more importantly, I want any drive and its data to be as safe and portable as possible (that's the reason for choosing FAT32), even if the OS or the controller screw up big time. So, which should I choose? Who should I trust more, Microsoft's Windows 7 or possibly the cheapest RAID controller on the market? Are there other cheap solutions?"

In 1987, a study published by Jim Gray and Gianfranco Putzolu evaluated the trade-offs between holding data in memory and storing it on a disk. Known widely as the "five-minute rule," their research was updated and expanded 10 years later. Now, as jamie points out, Communications of the ACM is running an article by Goetz Graefe with another decennial update, evaluating the rule using hardware and software typical of 2007, with an eye toward how flash memory will affect the situation. An excerpt from Graefe's conclusion: "The 20-year-old five-minute rule for RAM and disks still holds, but for ever-larger disk pages. Moreover, it should be augmented by two new five-minute rules: one for small pages moving between RAM and flash memory and one for large pages moving between flash memory and traditional disks. For small pages moving between RAM and disk, Gray and Putzolu were amazingly accurate in predicting a five-hour break-even point two decades into the future. Research into flash memory and its place in system architectures is urgent and important. Within a few years, flash memory will be used to fill the gap between traditional RAM and traditional disk drives in many operating systems, file systems, and database systems."

PCWorld recently tested the 3G networks of AT&T, Verizon, and Sprint in 13 different cities across the US. They've now posted the results, which show that Sprint and Verizon are neck-and-neck for reliability, while AT&T has consistently higher upload rates. From the article: "Across more than 20 testing locations in each of the 13 cities we tested, Verizon had an average download speed of 951 kbps. Verizon demonstrated good reliability, too; the network was available at a reasonable and uninterrupted speed in 89.8 percent of our tests. Sprint's 3G network delivered a solid connection in 90.5 percent of our 13-city tests. Sprint's average download speed of 808 kbps across 13 cities wasn't flashy (at that speed, a 1MB file downloads in 10 seconds), but dependability is an important asset. The Sprint network performed especially well, both in speed and in reliability, in our test cities in the western part of the United States. The AT&T network's 13-city average download speed in our tests was 812 kbps. Its average upload speed was 660 kbps. Reliability was an issue in our experience of the AT&T system: Our testers were able to make a connection at a reasonable, uninterrupted speed in only 68 percent of their tests." What have you noticed about the various carriers in your city?

pmontra writes "The City of Venice, Italy, started to offer free Wi-Fi to residents (Google translation from the Italian source) on July 3 2009. Tourists and other visitors will pay 5 Euros a day for the service starting from September. The hot spots are connected to a ten thousand kilometer (6,250 mile) fiber optic LAN the City started deploying in the '90s. The first day of free Internet access has been celebrated with a digital treasure hunt in the channels of the lagoon city."

ranjix writes "I need a handheld device which would allow me to read ebooks and/or browse the internet while actively and intensely laying in the hammock (and Yes, I do have a hammock in my mom's basement). I'll try to sum up the basic requirements: (good) PDF reader (and ebooks of whatever sort), WiFi connectivity and Internet browser, screen minimum 4.5", readable in sunlight, etc, fairly responsive, at least 4-5 hours battery. Obviously I looked at the usual suspects: Kindle/Amazon tries to grab one into the proprietary formats and their own network (while other ebook readers don't really browse the internet), laptops/netbooks are pretty hard to hold, and the UMPC arena seems a hodge-podge of 'to be released' (Viliv S5? Aigo whatever?) with 'seriously expensive' (Sony, OQO) or plain 'we recommend you don't buy' (Samsung Q1Ex). Is there anything else I could use in the given circumstances?"

suka writes "During a keynote at the Gran Canaria Desktop Summit, Nokia's Quim Gil announced that a future release of Maemo is going to be built around Qt. Maemo Harmattan is going to switch away from GTK+ / Hildon, derStandard.at reports from the conference." Michael Pyne also writes with a post describing day one of the conference from a KDE perspective.

Harry writes "In 1968, computers tended to occupy entire rooms, and were therefore hard to take with you. But Computerworld reports on Anderson Jacobson's 75-pound Teletype-terminal-in-a-case, an early attempt to let folks compute from anywhere. (Well, anywhere they had power and access to a telephone for the Teletype's acoustic coupler.) Wheels were optional."

Slatterz writes "The Tesla Roadster has almost mythical status among electric car enthusiasts. It's fast, with high torque over a wide RPM range, and can beat a Ferrari in terms of acceleration. Now Tesla has released new video of its upcoming new electric car, called the Model S, which Tesla Motors claims is the world's first mass produced fully-electric vehicle. Unlike the Lotus-Elise based Roadster, the Model S is a traditional sedan of the type millions of commuters might actually drive. Tesla claims it will fit seven people (if two of them are 'children under 10'), and has mounted a rather large 17in LCD in the dash. Key to Telsa's future will be the evolution of lithium-ion battery technology. Tesla Motors claiming the new Model S can travel up to 300 miles on a single charge, but the battery will still take 45 minutes to quick-recharge." (And for those in countries where it matters, this article mentions that it should also be available in right-hand drive.)

Hugh Pickens writes "TechCrunch's Michael Arrington has been talking for a year about building a touch-screen tablet for Web surfing and now it appears that the CrunchPad is close to becoming a reality. 'We're going to make some really big announcements,' said Arrington, who predicted a prototype would be ready for unveiling by the end of July. The purpose of the CrunchPad will be very simple: surfing the Web. Turn it on and up comes a browser — 'an Internet consumption device,' for reading, checking e-mail or watching video. The CrunchPad will not have a hard drive or keyboard and photos of the latest prototype show a device with a 12 inch screen. 'The screen is now flush with the case and we've decreased the overall thickness to about 18 mm,' writes Arrington. 'The case will be aluminum, which is more expensive than plastic but is sturdier and lets us shave a little more off the overall thickness of the device.' The CrunchPad boots directly into the browser with a Linux-based operating system and a WebKit-based browser. A video of an earlier CrunchPad prototype in action shows a device which, unlike the iPhone, runs flash. 'The next time we talk about the CrunchPad publicly will be at a special press and user event in July in Silicon Valley,' writes Arrington. 'We're full on. These prototypes are real.'"

cheezitmike writes "Researchers at Oregon State University are testing a new type of wave-energy converter to generate electricity from ocean waves: 'Even when the ocean seems calm, swells are moving water up and down sufficiently to generate electricity. ... For decades the challenge has been to build a device that can withstand monster waves and gale-force winds, not to mention corrosive saltwater, seaweed, floating debris and curious marine mammals. ... In the most recent prototypes, a thick coil of copper wire is inside the first component, which is anchored to the seafloor. The second component is a magnet attached to a float that moves up and down freely with the waves. As the magnet is heaved by the waves, its magnetic field moves along the stationary coil of copper wire. This motion induces a current in the wire — electricity.'" Meanwhile, researchers at Stanford are working to design "turbine kites" that operate at 30,000 feet, where air currents flow much faster than they do close to the ground. Ken Caldeira, a Stanford associate professor, said, "If you tapped into 1% of the power in high-altitude winds, that would be enough to continuously power all civilization."

An anonymous reader writes "Now that some little time has passed, and the hype has died down a bit, I'm wondering if anyone has taken the $500 plunge and gotten a Kindle DX. From the academic-paper-reading-geek perspective, is it worth the money? How well does it work with PDFs, and is it easy to get them on and off? I haven't been able to find any good reviews on the interweb that address its usability as I would like to use it."

blackbearnh writes with this excerpt from O'Reilly Radar "Think about Wikipedia, what some consider the most complete general survey of human knowledge we have at the moment. Now imagine squeezing it down to fit comfortably on an 8GB iPhone. Sound daunting? Well, that's just what Patrick Collison's Encyclopedia iPhone application does. App Store purchasers of Collison's open source application can browse and search the full text of Wikipedia when stuck in a plane, or trapped in the middle of nowhere (or, as defined by AT&T coverage...)"

Francesco Fondi writes "An Italian Company is using RC scale model submarines to lay fiber through Milan's sewage system. The RC submarine used is the Neptune SB-1, produced by Taiwanese company Thunder Tiger. It costs ca $600 in US hobby shops." In Italian, but the pictures speak for themselves.

ericatcw writes "The inaugural NoSQL meet-up in San Francisco during last month's Yahoo! Apache Hadoop Summit had a whiff of revolution about it, like a latter-day techie version of the American Patriots planning the Boston Tea Party. Like the Patriots, who rebelled against Britain's heavy taxes, NoSQLers came to share how they had overthrown the tyranny of burdensome, expensive relational databases in favor of more efficient and cheaper ways of managing data, reports Computerworld."

Al writes "The AcceleGlove from AnthroTronix, is the first fully programmable glove that records hand and finger movements. Other gloves — like 5DT's Data Glove, which is used primarily in virtual reality — normally cost $1,000 to $5,000, but the AcceleGlove costs just $499. The AcceleGlove comes with software that lets developers use Java to program it for any application they wish. AnthroTronix initially developed the glove with the US Department of Defense for robotic control but it could also be used in video games, sports training, or physical rehabilitation."

destinyland writes "'We're going to have to do extensive robotic exploration,' says the director of NASA's Ames Research Center, suggesting nanotechnology to build self-replicating robots on Mars. Genetically engineering extraction and construction microbes could 'grow' electrical components, and eventually convert carbon dioxide on Mars into oxygen. 'If we really want to settle Mars, and we don't want to have to carry millions of tons of equipment with us to duplicate the way we live on Earth, these technologies will be key.' This interview with Peter Worden, the director of NASA's Ames Research Center, was just featured in the summer issue of H+ magazine, and he also argues that robots will be necessary to first survey Mars for underground microbes and protect the unique Martian biosphere, since it may contain clues about earth's own first life forms. In fact, given the water and carbon that's been discovered on Mars, the possibility of underground microbes is still considered real, and Worden argues that Mars 'may already be supporting life.'"