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Submission + - Researchers Create First All Optical Nanowire NAND Gate (upenn.edu)

mhore writes: Researchers at the University of Pennsylvania have created the first all optical, nanowire-based NAND gate which paves the way towards photonic devices that manipulate light to perform computations. From the release, " The research team began by precisely cutting a gap into a nanowire. They then pumped enough energy into the first nanowire segment that it began to emit laser light from its end and through the gap. Because the researchers started with a single nanowire, the two segment ends were perfectly matched, allowing the second segment to efficiently absorb and transmit the light down its length."

The gate works by shining light on the nanowire structure to turn on and off information transported through the wire. The research appeared this month in Nature Nanotechnology.

The Military

Nuclear Subs 'Collide In Ocean' 622

Jantastic noted a BBC report saying "A Royal Navy nuclear submarine was involved in a collision with a French nuclear sub in the middle of the Atlantic. It is understood HMS Vanguard and Le Triomphant were badly damaged in the crash earlier this month. Despite being equipped with sonar, it seems neither vessel spotted the other, the BBC's Caroline Wyatt said."
Unix

February 13th, UNIX Time Will Reach 1234567890 376

mikesd81 writes "Over at Linux Magazine Online, Jon maddog Hall writes that on Friday the 13th, 2009 at 11:31:30pm UTC UNIX time will reach 1,234,567,890. This will be Friday, February 13th at 1831 and 30 seconds EST. Matias Palomec has a perl script you an use to see what time that will be for you: perl -e 'print scalar localtime(1234567890),"\n";' Now, while this is not the UNIX epoch, Alan Cox does assure us that Linux is now working on 64-bit time, and the UNIX epoch 'roll-over' would happen about the time that the sun burnt out."

So Who's Running Apple Now? 399

An anonymous reader writes "With Steve Jobs stepping down from heading Apple for at least six months who's running the company that he resurrected? This article names the three people who will try to keep things running. But you have to wonder whether they'll have the charisma needed to keep Apple cool..."
Businesses

How Does a 9/80 Work Schedule Work Out? 1055

cellocgw writes "My company is in the process of implementing a version of '9/80,' a work schedule that squeezes 80 hours' labor time into 9 business days and provides every other Friday off. I was wondering how this has been implemented in other companies, and how it's worked out for other Slashdot readers. Is your system flexible? Do you find time to get personal stuff done during the week? Is Friday good for anything other than catching up on lost sleep? And perhaps most important, do your managers respect the off-Fridays, or do they pull people in on a regular basis to handle 'crises?'"
Robotics

Ethical Killing Machines 785

ubermiester writes "The New York Times reports on research to develop autonomous battlefield robots that would 'behave more ethically in the battlefield than humans.' The researchers claim that these real-life terminators 'can be designed without an instinct for self-preservation and, as a result, no tendency to lash out in fear. They can be built without anger or recklessness ... and they can be made invulnerable to ... "scenario fulfillment," which causes people to absorb new information more easily if it agrees with their pre-existing ideas.' Based on a recent report stating that 'fewer than half of soldiers and marines serving in Iraq said that noncombatants should be treated with dignity and respect, and 17 percent said all civilians should be treated as insurgents,' this might not be all that dumb an idea."
The Internet

The Internet Is 'Built Wrong' 452

An anonymous reader writes "API Lead at Twitter, Alex Payne, writes today that the Internet was 'built wrong,' and continues to be accepted as an inferior system, due to a software engineering philosophy called Worse Is Better. 'We now know, for example, that IPv4 won't scale to the projected size of the future Internet. We know too that near-universal deployment of technologies with inadequate security and trust models, like SMTP, can mean millions if not billions lost to electronic crime, defensive measures, and reduced productivity,' says Payne, who calls for a 'content-centric approach to networking.' Payne doesn't mention, however, that his own system, Twitter, was built wrong and is consistently down."

Comment Re:The ignorant leading the blind (Score 2, Informative) 135

I poked around to try to find it after posting here, and all I could find is something in arxiv. Perhaps the refs didn't like the paper... maybe there was something wrong with it? I'm not sure -- I'm not an astronomer. Looks like my memory is a bit fuzzy... :)

Here's the link to the manuscript, though.

The Military

US Congress Funds Laser Weapons 423

An anonymous reader writes "The Washington Post reports that the US Congress is funding laser weapons for use in the near future. Low-power lasers called 'dazzlers' are already being used in Iraq to temporarily reduce a person's vision. High-power laser weapons would allow precision attacks that minimize civilian casualties. From the Post: 'The science board said tactical laser systems could be developed for broader use because they "enable precision ground attack to minimize collateral damage in urban conflicts." The report suggested, for example, that "future gunships could provide extended precision lethality and sensing." The board also proposed using lasers to protect against rockets, artillery, mortars and unmanned airborne vehicles by blasting them out of the sky. Last month, the Army awarded Boeing $36 million to continue development of a high-energy laser mounted on a truck that could hit overhead targets. But deployment is not expected until 2016, even if all goes well.'"
Windows

What Does It Take To Get a PC With XP? 513

An anonymous reader writes "Christopher Null tried to buy a computer with Windows XP pre-installed on it from the United States' nine biggest PC makers. His findings: You can get one, but be prepared to fib."
Robotics

Self-Healing Robots of Doom From UPenn 135

OshMan writes "University of Pennsylvania's ModLab is doing some interesting stuff with modular robots. In this case involving absolutely no weapons! An example clip on YouTube shows one of their cluster robots re-assembling itself after being kicked apart. For more information about the program check out their site. So let the Borg and Terminator jokes begin!"
Apple

Apple Buys a Chip Company for $278M 322

An anonymous reader writes "Apple's just bought a chip company, P.A. Semi that could make chips for iPhones and maybe iPods. Apple wouldn't reveal the exact plans, but Dan Dobberpuhl, lead designer of Alpha's chips, is known for making super efficient processors, like a 64-bit dual core last year that was supposedly about 300% more efficient than the nearest competition, using only 5 to 13 watts at 2GHz. Apple's quarterly results are later today, so we might hear more about the deal. This is something of a blow to ARM, especially with the mobile chip market heating up recently, with forays by Intel and Nvidia adding to competition from established players like VIA."
The Military

Air Force Cyber Command General Answers Slashdot Questions 543

Here are the answers to your questions for Major General William T. Lord, who runs the just-getting-off-the ground Air Force Cyber Command. Before you ask: yes, his answers were checked by both PR and security people. Also, please note that this interview is a "first," in that Generals don't typically take questions from random people on forums like Slashdot, and that it is being watched all the way up the chain of command into the Pentagon. Many big-wigs will read what you post here -- and a lot of them are interested in what you say and may even use your suggestions to help set future recruiting and operational policies. A special "thank you" goes to Maj. Gen. Lord for participating in this experiment, along with kudos to the (necessarily anonymous) people who helped us arrange this interview.

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