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User: jbeaupre

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  1. Re:Why DC when AC is better for long distances? on Sahara Solar To Power Half the World By 2050 · · Score: 1

    As AC transmission lines get longer, they become more efficient as radiating antennas. Capacitance loses add up too. A 600+ km is where it makes sense to use DC vs AC.

    Also, AC lines use high voltage to avoid loses, but that means transmission towers must be very tall to avoid capacitive lose to the ground. DC lines towers can be much shorter.

    In short, better efficiency, lower installation costs.

  2. Re:has any fortune 500 company gone Google Apps? on Microsoft Ups Online War, Says Google's 'Failing' · · Score: 1

    Google?

  3. Re:Personal Attacks & Defamation on DDoS Attack On Wikileaks Increasing · · Score: 1

    You misunderstand. This is to avoid confusing the Wikileaks guy with "convicted rapist Assange" and "suspected lunch stealer Assange." Got to be specific.

  4. Mod server down on Chinese DNS Tampering a Real Threat To Outsiders · · Score: 3, Interesting

    If only you could mod servers up or down, giving them some sort of reputation history. The your OS could determine a trusted anchor based on a server's "karma" and your requirements*. A system parallel to DNSSEC for apportioning, updating, and validating trust.

    * yeah, I'm borrowing Slashdot terminology. But what the heck, it kind of works.

  5. Undamaged package on Which Shipping Company Is Kindest To Your Packages? · · Score: 2, Funny

    Nearly 30 years ago I stumbled on a way to ship items without any damage happening. I needed to bring back two boxes of stuff from my grandparents. I didn't look to closely at the two boxes, but the airport sure did. "Does this box really have sulfuric acid?" Huh? Oh, that's just the box. Don't worry. It was left over from treating the swimming pool.

    At baggage at my destination, the sulfuric acid box was pristine. Not a scratch, dent, or tear. The corners were perfect. The regular box was beat to hell and barely holding together.

    I doubt you could even use a left over pool chemical box anymore.

  6. Re:Air quality indoors? on US Embassy Categorizes Beijing Air Quality As 'Crazy Bad' · · Score: 1

    To solve that problem they are now promoting HEPA level air exchange systems for apartments in China. They are supposed to pay for themselves in reduced health costs.

  7. Re:Great...now just one more issue.... on Making Airport Scanners Less Objectionable · · Score: 5, Funny

    In the US, flying is definitely safer than driving. Especially to Europe.

  8. Re:Old mine? on The Story of My As-Yet-Unverified Impact Crater · · Score: 1

    It looks like there is a small quarry (gravel or sand pit?) just to the right. If so, then the area has something worth digging up and an old abandon pit makes perfect sense.

  9. Re:Carbonates on The Story of My As-Yet-Unverified Impact Crater · · Score: 1

    Don't discount the possibility the lumps are actually leaverite. The best mineral collections on Earth often lack a specimen of leverite.

  10. The winning move on 2010 Geek IQ Test · · Score: 1
  11. Re:Lead ... just plain stupid on Large Hadron Collider (LHC) Generates a 'Mini-Big Bang' · · Score: 1

    Crap, got my accelerators mixed up. Comment still stands since the EPA and OSHA are probably even worse with maps than they are at physics.

  12. Lead ... just plain stupid on Large Hadron Collider (LHC) Generates a 'Mini-Big Bang' · · Score: 1

    Soon as OSHA or the EPA hears they are splattering walls with lead, they'll have to shut down. Then guys in bunny suits will have to spray some sort of goo to stabilize the lead before they scrape the walls clean before sending the waste to some special landfill. Haven't these physicists ever see and episode of This Old House?

    Bismuth or tungsten, that's the way to go.

  13. Multi-prong approach on Skin-Tight Bodysuits Could Protect Astronauts From Bone Loss · · Score: 5, Interesting

    Suits + exercise should both be used. But if you look at the physiology of bone, it's easy to see why both won't be enough. Bone is continually being destroyed and rebuilt by your body. The proportion of destruction to construction is controlled by stress (ignoring hormones and blood chemistry for the moment).

    Gravity puts stress on your bones even when you lay down. Even in water. Any bit of movement magnifies it. Exercise in space is meant to substitute for this continual stress, but can't provide for continual, low level stress. These suits provide continual, low level stress to the skeleton. But it's still not the same.

    Low level plus high level stress work great together. This is why some schools encourage kids to jump up and down, hard, to strengthen bones by including some high stress each day. But exercise and suits in space won't provide the same level to the entire skeleton that even a few hops on Earth plus a day of video games will.

    There is one more technology used on Earth to selectively strengthen bones. Maybe it can provide the final missing stress. It turns out sound waves stress bone too. Audible sound would be too loud. But ultrasound is commonly used to accelerate bone healing and strengthening. It's not inconceivable that the skin tight suit could incorporate PVDF sheets that could transmit ultrasound into an astronaut's bones, applying it to understressed areas. It could even work as a cap to reduce bone loss in the skull.

    Or just build a big 'ol hamster wheel.

  14. Re:Drivers larger than 2TB! on Swedes Show Intel Sandy Bridge Running BIOS-Successor UEFI · · Score: 1

    Leave it to Microsoft to use 2GB to store a blue screen.

  15. Re:Quis custodiet ipsos custodes? on Prepare To Be Watched While You Watch a Movie · · Score: 1

    No one. And the watchers won't be watching either. Profits are razor thins so theaters are manned by kids making minimum wage. They don't give a crap about what goes on, as long as they don't have to clean it up. I've walked in carrying a couple pizzas and no ticket, taking diner to my brother who worked there.

  16. Doh! Missed a chance at a patent. on NASA To Auction Automated Code Generation Patents · · Score: 4, Insightful

    I'm sure we were not the first, nor as sophisticated, but in 1994 we wrote a program to write programs.

    The port for sending commands to a robot was physically missing. The RS232 port was reserved for the terminal. So we connected a serial cable up to the robot controller and a pc. Then we wrote a program that would send the keystrokes to open a file for editing, edit it, save the program, and execute it. So when the pc would get a signal, it would calculate a trajectory for the robot, open the file on the controller, write the program, close it, then run it. Around 10 times a second.

  17. Re:mutually assured destruction on Power Failure Shuts Down 50 US Nuclear Missiles · · Score: 1

    I never knew we were at war with the Marshal Islands. Hint: if you're going to be pedantic, learn the vocabulary (i.e. thermonuclear).

  18. Re:Bad timing. on Obama Wants Broader Internet Wiretap Authority · · Score: 3, Insightful

    Is it too late to bring back the Whig party? That's meant as a joke, but for those of you who may not have heard of them http://en.wikipedia.org/wiki/Whig_Party_(United_States)

  19. The old fantasy ... on In Case of Emergency, Please Remove Your Bra · · Score: 1

    I and a nation full of busty women are the only survivors of a terrible disaster. In real life, my wife is busty, so she'd survive. But I'm sure she'd understand the need to to save humanity. What could go wrong?

  20. Re:How do they transmit through several feet of ro on Designing Wireless Sensors To Be Dropped Into Volcanoes · · Score: 1

    The short answer is magma is conductive. Look up melting a beer bottle in a microwave to learn why.

  21. Re:Success stories? on Opossums Overrun Brooklyn, Fail To Eliminate Rats · · Score: 1

    Introducing humans sure did take care of that pesky dodo problem. And NZ moas, and a good chunk of Australia and N+S America's megafauna. We're close to winning the fight against rhinos and snow leopards.

  22. Re:No Surprise on Did Google Go Instant Just To Show More Ads? · · Score: 1

    Show me a company that isn't doing something to drive more revenue and I'll show you a company on its last legs.

    The reverse isn't necessarily true: http://www.ampedriders.net/

  23. Hide it in plain sight on Distinguishing Encrypted Data From Random Data? · · Score: 1

    How about killing two birds with one stone: Create a new picture file type. Call it jpeg-V (for verify). It would have to have a major feature making it worth widely adopting. As part of the spec, it would contain a 1024 byte random string. Heck, call it a unique identifier string to facilitate indexing.

    But ...

    There's nothing to prevent encrypted date from being buried in there. Maybe file pointers so pieces can be appended and also so you'd need both the password and the starting file.

    Now just populate the web with billions of pictures, most perfectly innocent. A thousand photos, taking up around a GB or two or three, might hold a meg of encrypted data.

    Now you're faced with just what the original question asks: can random and encrypted strings be indistiguishable.

  24. $1.73 million on SCO Puts Unix Assets On the Block · · Score: 5, Informative

    $1.73 million buys the whole company. http://finance.yahoo.com/q?s=SCOXQ.PK

  25. Re:Engineers are Smart on Why Are Terrorists Often Engineers? · · Score: 2, Interesting

    My granddad (who was a patriot in the best sense) had a medical condition that required removing half a pint of blood from time to time. Too little to be of use for transfusion. Being a thrifty old guy, he didn't let them throw it out. Let's just say Jefferson's aphorism works for roses too.