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User: petermgreen

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  1. Re:British Power Supply on Pirate Electrician Supplied Power To 1,500 Homes · · Score: 1

    LV (1000V)
    that should say less than 1000V (nearly always 240/415 three phase)

  2. Re:British Power Supply on Pirate Electrician Supplied Power To 1,500 Homes · · Score: 1

    No one works on underground live
    BS, I don't want to go into too much detail both in case i'm accused of helping people steal electricity and because I belive doing it without proper training would border on suicidal but they live joint underground LV (1000V) all the time in the UK and have developed procedures and materials that let them do it safely.

  3. Re:Real Time On-Screen Display on FCC Will Tackle Cell Phone 'Bill Shock' · · Score: 1

    Depends on the type of screen, on old phones I generally disabled the backlight completely since the screen was perfectly readable even with it off.

    Then they brought in that color screen crap and the contrast got much worse :/ Then they brought in modern screens with better color performance but even worse backlight performance so they were basically unusable with the backlight off :(

  4. Re:How about a maximum cell bill amount, say $500. on FCC Will Tackle Cell Phone 'Bill Shock' · · Score: 1

    I suppose the real question is why carriers don't try to be realistic and work with customers in some fashion to pre-emptively avoid bill shock.
    Why would they want to work with the customers before they know whether that customer will suck it up and pay or not?

  5. Re:"What is a datacenter?" on Feds Discover 1,000 More Government Data Centers · · Score: 2, Insightful

    People don't generally insist on waxing their own floors or doing their own wiring, after all.
    Because by and large the central cleaning do a good job and keep out of everyones way.

    Often there are poor accounting systems that layer unreasonable costs on putting something in a data center, which obviously is an accounting problem.
    Even if false costs and unnessacery beuracracy were eliminated there are a lot of costs to moving a server from a lab to a datacenter, a few that spring to mind.

    1: Backed up datacenter power costs more than regular grid power and datacenter space also costs more than space under someones desk that wouldn't be used for anything else if the server was moved.
    2: Lack of physical access means that unless you are very confident in your abilities and/or have very easy physical access you need to spend extra to get some form of remote admin. You also need reliable hardware.
    3: You probablly need the machine rackmountable
    2+3: The above points pretty much imply use of a new machine rather than the repurposed desktop that serves fine in the corner of the lab.

  6. Re:got spyware? on Careful What You Post, the FBI Has More of These · · Score: 1

    bonus points if the tracking device uses a mobile phone based communication method and sticks the guy doing the tracking with a huge data roaming bill

  7. Re:9% after a year? on iPhone 4 Screens Break 82% More Than 3GS · · Score: 1

    I get the impression that phone vendors think (rightly or wrongly) that people want thin and cheap. If you have user removable covers (like the old nokias did) you have to have a gap behind the cover for the cover to slide, and you have to have more structure in the rest of the phone since you can't rely on the cover as a structural element.

    apple went even further getting rid of the battery cover as well.

  8. Re:Reballed? on When You Really, Really Want to Upgrade a Tiny Notebook · · Score: 1

    Reballing is replacing the balls.

    I haven't read TFA but i'm guessing he was reusing a processor taken from another machine since it's generally difficult to get intel processors in BGA form.

    A ball grid array package has balls of solder on the bottom which are used to solder it to the board. These balls are only meant to be used once and will break up when desoldering. So if you want to reuse a BGA packaged chip you have to replace the balls first.

  9. Re:MacBook Air on When You Really, Really Want to Upgrade a Tiny Notebook · · Score: 2, Insightful

    In the latter case, you know what you were getting into when you got an Apple, boyo
    s/apple/thin and light laptop/

    socketing processors takes up vertical space which in the trend of making laptops thinner is at a huge premium. a few millimetres doesn't sound like much but when the whole laptop is only a couple of centimeters thick it's significant.

    Replacing a BGA processor is possible as this article shows but getting the chips can be tricky (though interestingly farnell were promoting intel atom chips on thier front page recently...)

  10. Re:MacBook Air on When You Really, Really Want to Upgrade a Tiny Notebook · · Score: 3, Informative

    I think with the newer core i3 and core i5 they got rid of the external memory controller
    Indeed the MCH (northbridge) is gone and most of what was previously part of it is now in the processor with the physical layer for the video now in the PCH (roughly equivilent to the old southbridge/ICH). Further the memory type is DDR3 (the majority of core 2 systems used DDR2). Fitting an i series to a core 2 motherboard or vice-versa is just not going to happen.

  11. Re:Orbit on Baumgartner's Daredevil Parachute Jump From Space Put On Hold · · Score: 1

    The short answer: No

    The long answer: Orbit is a condition where gravity and lateral velocity are sufficantly well balanced that the object keeps going arround without either reentering the atmosphere or flying off into space. The lateral velocity required for this condition is high enough that no conceivable accident with a stunt like this would put a human into orbit.

  12. Re:British Power Supply on Pirate Electrician Supplied Power To 1,500 Homes · · Score: 1

    Here in the UK mains cables run mostly underground. Assuming you are familiar with live working on underground cables it would be pretty easy to add an unauthorised branch and it would be almost impossible for them to find it.

    Metering guys are only going to notice theft if you are retarded enough to do it at the metering position in a property that officially has electricity.

  13. Re:come on people... on High-Tech Microphone Picks Voices From a Crowd · · Score: 1

    Seriously though, what other reason do we need this besides spying on people?
    I can see it would make logistics easier. No need to give microphones to each person who might need to talk on camera, just mic up the whole room and then dial in on whoever you want to listen to.

  14. Re:come on people... on High-Tech Microphone Picks Voices From a Crowd · · Score: 2, Informative

    With only two microphones it's all about how they are located. If you can locate two mics so they both pick up the noise but only one of them picks up the signal then with modern "adaptive filtering"* DSP techniques you can achieve huge noise reduction. IIRC this technique is used for micing helicopter pilots among other things.

    *I put adaptive filtering in quotes because you don't directly use the filter to remove noise. Instead you use the filter to eliminate magnitude/phase differences in the noise picked up by the two microphones. After adaptive filtering the "noise" can then be subtraced from the "signal+noise" to give just the signal (that's the idea anyway, in practice the adaptive filter is not perfect so some noise is left)

  15. Re:The REAL crime here on In Australia, Rising VoIP Attacks Mean Huge Bills For Victims · · Score: 1

    Most packet loss is due to congestion
    And most congestion is due to the fact that things like file downloads work on the principle of trying to and go as fast as the host can manage and then throttling back if/when that causes congestion.

    which using FEC is only going to make worse.
    It will mean that the voip call uses more bandwidth which means something else will have to throttle back slightly sooner.

    So you'll gain your phone call clarity at the expense of other traffic.
    meh, Given the relatively low bandwidth use of VOIP I doubt it's impact on other traffic will be significant.

    QOS is a technically better soloution than FEC but given that QOS is a massive political hot potato I doubt we will see it on the open internet any time soon.

  16. Re:The REAL crime here on In Australia, Rising VoIP Attacks Mean Huge Bills For Victims · · Score: 1

    The obvious way to fix most web browsing issues with satellite would be to build a split proxy.

    A program running on the internet side would talk to webservers, a program running on the client side would talk to the web browser and then they would talk to each other with a protocol specifically optimised for high latency links.

  17. Re:Is anyone surprised? on Chinese Nobel Winner's Wife Detained · · Score: 1

    Having searched the the document you linked for both "united states" and "usa" I see a few things on restrictions but nothing on outright bans.

  18. Re:Tipping Point on Chinese Nobel Winner's Wife Detained · · Score: 1

    even if we made it illegal for them to buy it, they still would and there's nothing we could do about it.
    Couldn't a clause be added that said "if this bond is traded to a non-permitted owner it will immediately be rendered null and void".

  19. Re:2 billion... on US Monitoring Database Reaches Limit, Quits Tracking Felons and Parolees · · Score: 1

    Afaict IDs in databases are typically not reused after records are deleted or even after records fail to insert so even if the old records are archived you will still run out of IDs eventually.

    How long eventually is depends on the size of your field and the insert attempt rate into your DB.

  20. Re:Get the puns out of the way on Large, Slow Airships Could Move Buildings · · Score: 1

    Any particular reason you think lead would be better for this than other metals?

  21. Re:U.F. O.T. - your sig on Large, Slow Airships Could Move Buildings · · Score: 1

    I tried to look up http://slashdot.org/~plugwash [slashdot.org] and was returned the following:
    I'm getting that error when I look at any /. account including this one and your account

    While I registered the plugwash account here years ago I never actually posted anything using it (IIRC i screwed something up during registration but it was a long time ago and I don't even rememeber what email I used)

  22. Re:Get the puns out of the way on Large, Slow Airships Could Move Buildings · · Score: 1

    Yeah I remember that episode, they had to use a special design designed to unfurl in a way that would put minimal stresses on the lead and they still had to tape on loads of patches.

  23. Re:Goodbye Building Industry on Large, Slow Airships Could Move Buildings · · Score: 1

    I doubt moving buildings long distances in their final form will ever be economical, the value density isn't high enough.

    Flatpack is probablly a better option if you want to import buildings.

  24. Re:U.F.O. on Large, Slow Airships Could Move Buildings · · Score: 3, Interesting

    Or even someone playing a prank.

    I remember a TV show (called "a very British UFO hoax") about a group of special effects guys trying to pull off a UFO hoax. They were pretty successful, the flying saucer they built wasn't very big (I don't remember the exact size but it could be broken down into segments that would fit in a SUV) but the eyewitnesses reported it as much larger.

    Most people don't understand their own vision. An eye doesn't directly tell us the size of or distance to objects just the angle is subtends on the retina (which roughly corresponds to size/distance).

    Binocular vision tells us distance but it only works effectively over short distances .

    So our brains use various clues to judge the size and depth of objects. One of those clues is how big we expect the object to be. An object flying at night takes away the other clues so if people are expecting it to be big they will see it as big!

  25. Re:Their rules, their game on Libya Takes Hard Line On Link Shortening Domains · · Score: 1

    hmm, according to domaintools they are all registered but either not resolving or in one case resolving to what appears to be someones printer?!