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Current Topic: Technology |
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Spin flip trick points to fastest RAM yet.... |
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Topic: Technology |
12:22 pm EDT, Sep 28, 2008 |
Do you wish your computer was faster? Engineers and physicists from Germany have demonstrated the quickest prototype yet of an advanced form of RAM tipped by hardware manufacturers to be the future of computing. The device is so fast it brushes against a fundamental speed-limit for the process. Magnetoresistive random access memory MRAM is a faster and more energy efficient version of the RAM used in computers today, and hardware companies think it will in a few years dominate the market. Its speed and low power will in particular boost mobile computing. Whereas conventional RAM stores a digital 1 or 0 as the level of charge in the capacitor, MRAM stores it by changing the north-south direction of a tiny magnet s magnetic field. Each variable magnet is positioned next to one with a fixed field. Reading a stored value involves running a current through the pair to discover the direction of the variable magnet s field. Spin flips The MRAM that IBM and most other manufacturers are betting on uses the spins of electrons to flip the magnetic fields, called spin-torque MRAM. Now researchers in Germany have built a spin-torque system that is dramatically faster than any other. Santiago Serrano-Guisan and Hans Schumacher of the Physical-Technical Federal Laboratory of Germany worked with University of Bielefeld and Singulus Nano-Deposition Technologies researchers to build it from tiny pillars 165 nanometres tall. The tOP ENd of each pillar acts as a variable magnet that stores data, whereas the bottom ends are fixed magnets. A current passing through a pillar from bottom to top has the spin of its electrons lined up by the permanent-magnet region. When those electrons reach the pillars other end, they flip the variable magnet region s field to match. The field can be flipped back by reversing the current. Usually when the field is flipped it takes some time to settle into its new orientation. The north-south axis draws a few circles in the air before settling into place.
Spin flip trick points to fastest RAM yet.... |
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So where were the quants? How Wall Street Lied to Its Computers... |
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Topic: Technology |
11:25 am EDT, Sep 23, 2008 |
So where were the quants? That’s what has been running through my head as I watch some of the oldest and seemingly best-run firms on Wall Street implode because of what turned out to be really bad bets on mortgage securities. Before I started covering the Internet in 1997, I spent 13 years covering trading and finance. I covered my share of trading disasters from junk bonds, mortgage securities and the financial blank canvas known as derivatives. And I got to know bunch of quantitative analysts (”quants”): mathematicians, computer scientists and economists who were working on Wall Street to develop the art and science of risk management. They were developing systems that would comb through all of a firm’s positions, analyze everything that might go wrong and estimate how much it might lose on a really bad day. We’ve had some bad days lately, and it turns out Bear Stearns, Lehman Brothers and maybe some others bet far too much. Their quants didn’t save them. I called some old timers in the risk-management world to see what went wrong. I fully expected them to tell me that the problem was that the alarms were blaring and red lights were flashing on the risk machines and greedy Wall Street bosses ignored the warnings to keep the profits flowing. Ultimately, the people who ran the firms must take responsibility, but it wasn’t quite that simple. In fact, most Wall Street computer models radically underestimated the risk of the complex mortgage securities, they said. That is partly because the level of financial distress is “the equivalent of the 100-year flood,” in the words of Leslie Rahl, the president of Capital Market Risk Advisors, a consulting firm. But she and others say there is more to it: The people who ran the financial firms chose to program their risk-management systems with overly optimistic assumptions and to feed them oversimplified data. This kept them from sounding the alarm early enough. Top bankers couldn’t simply ignore the computer models, because after the last round of big financial losses, regulators now require them to monitor their risk positions. Indeed, if the models say a firm’s risk has increased, the firm must either reduce its bets or set aside more capital as a cushion in case things go wrong. In other words, the computer is supposed to monitor the temperature of the party and drain the punch bowl as things get hot. And just as drunken revelers may want to put the thermostat in the freezer, Wall Street executives had lots of incentives to make sure their risk systems didn’t see much risk. “There was a willful designing of the systems to measure the risks in a certain way that would not necessarily pick up all the right risks,” said Gregg Berman, the co-head of the risk-management group at RiskMetrics, a software company spun out of JPMorgan. “They wanted to keep their capital base as stable as possible so that the limits they imposed on their trading desks and portfolio managers would be stable.”
“There was a willful designing of the systems to measure the risks in a certain way that would not necessarily pick up all the right risks” .... So where were the quants? How Wall Street Lied to Its Computers... |
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Justice Department Moving to Immunize Snooping Telcos |
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Topic: Technology |
10:51 pm EDT, Sep 14, 2008 |
Two months ago, President Bush won congressional approval to immunize the nation's telecommunications companies from lawsuits accusing them of helping Bush funnel Americans' electronic communications to the National Security Agency without warrants -- all in the name of national security following the Sept. 11 terror attacks. But the telecoms, facing 36 lawsuits commingled as one in a San Francisco federal court, still haven't been granted immunity in the lawsuits alleging they breached their customers' Fourth Amendment right to privacy. On Friday, however, Justice Department special counsel Anthony Coppolino said the government would comply with the immunity bill's procedural hurdles by Sept. 19 to seek blanket immunity on behalf of the companies.
Just keep on giving it away! Justice Department Moving to Immunize Snooping Telcos |
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Va. court strikes down anti-spam law |
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Topic: Technology |
3:48 pm EDT, Sep 12, 2008 |
e Virginia Supreme Court declared the state's anti-spam law unconstitutional Friday and reversed the conviction of a man once considered one of the world's most prolific spammers. ADVERTISEMENT The court unanimously agreed with Jeremy Jaynes' argument that the law violates the free-speech protections of the First Amendment because it does not just restrict commercial e-mails. Most other states also have anti-spam laws, and there is a federal CAN-SPAM Act as well. The Virginia law "is unconstitutionally overbroad on its face because it prohibits the anonymous transmission of all unsolicited bulk e-mails, including those containing political, religious or other speech protected by the First Amendment to the U.S. Constitution," Justice G. Steven Agee wrote. In 2004, Jaynes became the first person in the country to be convicted of a felony for sending unsolicited bulk e-mail. Authorities claimed Jaynes sent up to 10 million e-mails a day from his home in Raleigh, N.C. He was sentenced to nine years in prison. Jaynes was charged in Virginia because the e-mails went through an AOL server there. The state Supreme Court last February affirmed Jaynes' conviction on several grounds but later agreed, without explanation, to reconsider the First Amendment issue. Jaynes was allowed to argue that the law unconstitutionally infringed on political and religious speech even though all his spam was commercial. Jaynes' attorney, Thomas Wolf, has said sending commercial spam would still be illegal under the federal CAN-SPAM Act even if Virginia's law is invalidated. However, he said the federal law would not apply to Jaynes because it was adopted after he sent the e-mails that were the basis for the state charges.
"unsolicited bulk e-mails" Someone needs to see if he would like his inbox full of junk... Moronic stuff like this has no place on the internet... The judge never sees spam due to really expensive hard/software to block it... hmmm Va. court strikes down anti-spam law |
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Topic: Technology |
2:56 pm EDT, Sep 11, 2008 |
I still can’t believe that technology has progressed so fast for devices such as cell phones being capable of handling email in a jiffy - something I would have laughed at 10 years ago. Peek is one of the later innovations, offering an e-mail only mobile device that was specially designed to let you manage your e-mail no matter where you are. Peek is a super thin and stylish device that lets you take your email with you and stay connected. With Peek service you get unlimited email for a flat, low monthly rate. Totally easy. Sound interesting? Peek will be available this fall in stores nationwide. This $99 device targets folk who don’t want to fork out hundreds more for a smartphone just because they want to access their e-mail on-the-go. It is available from Target and takes less than 5 minutes to set up, and best of all is, you don’t have to call a carrier and go through a web of human operators. It will cost you a flat monthly fee without having to worry about separate voice/data plans, hidden fees or surcharges. Compatible e-mail providers include Yahoo!, Hotmail, Gmail, AOL and majority of the other internet providers. Peek's Specifications: * OS - Peekux * CPU - CPU is an embedded 104Mhz ARM7 that is part of the Texas Instrument Locosto chipset * Bands - US Triband GPRS (800, 1800, and 1900 Mhz) * Data - GPRS (Packet Data standard in GSM) * Memory - 8MB of user memory (which is a lot of email!) * Display - 2.5 inches (320 x 240 pixels (QVGA), 65k colors) * Dimensions - 4.0 x 2.7 x 0.4 in (102 x 68 x 10mm) * Weight - 3.8 ounces (109 gm) * Battery Life - 4-5 days under typical usage
If this is lunux based I wonder what parts of GPL are being violated? But still cheap and could be a cool hacking platform... Peek - Simply email |
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RIM & TiVo Partner to Provide TiVo Mobile Entertainment Services on BlackBerry Smartphones |
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Topic: Technology |
2:39 pm EDT, Sep 11, 2008 |
The new relationship brings TiVo and RIM together to develop a variety of mobile entertainment services that marry RIM's leading BlackBerry smartphones with the content delivered to consumers through the Emmy-winning TiVo service. Initially, BlackBerry smartphone users will gain the convenience of being able to discover what shows are on and schedule television recordings while away from the living room and on the go. Future collaboration between the companies will focus on software applications that further simplify mobile access to video content. "TiVo subscribers will soon be able to wirelessly control their TiVo DVRs using a BlackBerry smartphone - anytime, anywhere - and that is a powerful example of how our respective technologies can complement each other to serve our mutual customers," said Jim Balsillie, Co-CEO of Research In Motion. "As the BlackBerry smartphone continues its evolution as a modern lifestyle device, the importance of home entertainment integration will continue to grow and TiVo will be the key in providing consumers with greater flexibility in accessing television content." "TiVo continues to transform and revolutionize the way people control and watch television and broadband video," said Tom Rogers, CEO and President of TiVo Inc. "RIM and TiVo share a commitment to great user experiences, which cause our products to become seamlessly integrated into the consumer's lifestyle. We also share a vision for the future of mobile entertainment services and we look forward to a variety of future innovations as a result of this relationship." The first software application from RIM and TiVo is expected to be available later this year.
RIM & TiVo Partner to Provide TiVo Mobile Entertainment Services on BlackBerry Smartphones |
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Landmark Case Upholds Open Source Licenses |
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Topic: Technology |
2:50 pm EDT, Sep 10, 2008 |
The Ruling: The appellate court reversed the lower court’s decision in an opinion that open source lawyers have dreamed about but never thought that we would see. The court paid tribute to the diversity and importance of the open source, free software, and public license community:
“Public licenses, often referred to as “open source” licenses, are used by artists, authors, educators, software developers, and scientists who wish to create collaborative projects and to dedicate certain works to the public…Open source licensing has become a widely used method of creative collaboration that serves to advance the arts and sciences in a manner and at a pace that few could have imagined just a few decades ago.”
And after noting that “lack of money changing hands” does not equate to lack of economic value, it wholeheartedly endorsed enforcement of the Artistic 1.0 license:
“The clear language of the Artistic License creates conditions to protect the economic rights at issue in the granting of a public license. These conditions govern the rights to modify and distribute the computer programs and files included in the downloadable software package. The attribution and modification transparency requirements directly serve to drive traffic to the open source incubation page and to inform downstream users of the project, which is a significant economic goal of the copyright holder that the law will enforce.”
Landmark Case Upholds Open Source Licenses |
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RE: The 65 mpg Ford the U.S. Can t Have! |
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Topic: Technology |
2:08 pm EDT, Sep 10, 2008 |
Stefanie wrote: unmanaged wrote: ...and the goverment needs to lower taxes on ALL petrol period...
Preach on!
My biggest bitch is how much the state I live in works on the roads and yes I know it is federal $$$$ that does most of this but come the hell on, I drive alot for work and am starting to hemorrhage money and am going to have to find a new job that has more $$$$ if things don't start looking up... RE: The 65 mpg Ford the U.S. Can t Have! |
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The 65 mpg Ford the U.S. Can t Have! |
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Topic: Technology |
11:40 am EDT, Sep 10, 2008 |
If ever there was a car made for the times, this would seem to be it: a sporty subcompact that seats five, offers a navigation system, and gets a whopping 65 miles to the gallon. Oh yes, and the car is made by Ford Motor (F), known widely for lumbering gas hogs. Ford's 2009 Fiesta ECOnetic goes on sale in November. But here's the catch: Despite the car's potential to transform Ford's image and help it compete with Toyota Motor (TM) and Honda Motor (HMC) in its home market, the company will sell the little fuel sipper only in Europe. "We know it's an awesome vehicle," says Ford America President Mark Fields. "But there are business reasons why we can't sell it in the U.S." The main one: The Fiesta ECOnetic runs on diesel. Automakers such as Volkswagen (VLKAY) and Mercedes-Benz (DAI) have predicted for years that a technology called "clean diesel" would overcome many Americans' antipathy to a fuel still often thought of as the smelly stuff that powers tractor trailers. Diesel vehicles now hitting the market with pollution-fighting technology are as clean or cleaner than gasoline and at least 30% more fuel-efficient. Yet while half of all cars sold in Europe last year ran on diesel, the U.S. market remains relatively unfriendly to the fuel. Taxes aimed at commercial trucks mean diesel costs anywhere from 40 cents to $1 more per gallon than gasoline. Add to this the success of the Toyota Prius, and you can see why only 3% of cars in the U.S. use diesel. "Americans see hybrids as the darling," says Global Insight auto analyst Philip Gott, "and diesel as old-tech." None of this is stopping European and Japanese automakers, which are betting they can jump-start the U.S. market with new diesel models.
Ford keeps making these mistakes and will continue to hemorrhage to death... They need to partnet with TaTa Motors and bring cars like the Nano and ECO to the USA, and the goverment needs to lower taxes on ALL petrol period... But hey what the hell do I know... The 65 mpg Ford the U.S. Can t Have! |
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Apollo Guidance Computer clone |
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Topic: Technology |
2:41 am EDT, Sep 1, 2008 |
[Cliff Miller] pointed out this incredible project from 2004. [John Pultorak]'s journey began in late 2000 when he decided to build a 60's or 70's era minicomputer. While gathering technical documentation, he found some interesting information on the Apollo Guidance Computer and felt that was the way to go. The AGC was the first integrated circuit computer ever built. Designed by MIT in 1964 it was constructed from ~5000 ICs, almost all 3-input NOR gates. [John]'s version uses late 1960's 74LS TTL logic which gains him a 10 to 1 reduction in the number of ICs. A good thing when you have to do ~15K wirewrap connections. He also used flipflops and register chips instead of building everything from NOR gates. [John] essentially built the AGC three times: First, he coded a simulator in C . Then, he imported the logic design into CircuitMaker to verify that it would actually work. Finally, he built the 3 by 5foot machine. He's provided an amazing amount of documentation for anyone that wants to explore this device and the overview alone is well worth a look.
I love this type of tech history.... read on! Apollo Guidance Computer clone |
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