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User: acaspis

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Comments · 107

  1. Re:In space nobody can here you play golf! on Golf in Space · · Score: 1
    "The ball is expected to travel up to 2.1 billion miles before it drops back into the atmosphere and burns up."

    So the average speed will be between 59,890.49 mph & 79,835.77 mph!! (or 96,384.16 kph & 128,482.90 kph)

    3.5 years in a circular orbit around the sun = 2.1 billion miles (in a sun-centered frame of coordinates) - just like any other golf ball.

    As others have pointed out, the motion of the ball around the earth can't account for 2.1 billion miles, unless the orbit is highly elliptic.

    And I'd love to see the specs of that transmitter. Otherwise I'll assume they'll shoot the ball into the atmosphere and make up a nice story.

    AC

  2. Re:IQ is linear with age? on Loss of Applied IQ Among UK Youth? · · Score: 1
    This obsolete definition of IQ was for kids between 6 and 16 years of age, i.e. when ability grows reasonably regularly with age. Modern definitions measure deviation from the average at a given age instead.

    Note that the article does not mention a 27 point loss. Cheers to the author for valuing accuracy over dramatic effect.

    AC

  3. Re:Submitter must be one of those 11 year old kids on Loss of Applied IQ Among UK Youth? · · Score: 1
    Thanks for the historical perspective (which I was not aware of), but I'm pretty sure that modern definitions of IQ are based on normalized statistical distributions rather than on the ratio of mental age to biological age.

    AC

  4. Submitter must be one of those 11 year old kids on Loss of Applied IQ Among UK Youth? · · Score: 2, Insightful
    3 years loss at age 11 is an IQ of 100*8/11 or 73 -- a massive loss of 27 points.

    No. "3 years loss at age 11" means today's kids reach the same IQ at age 11 that their parents reached at 8.

    This would translate to 73 if IQ rised linearly with age, but it probably doesn't.

    AC

  5. Next: microcode rootkits on Rootkits Head for Your BIOS · · Score: 1
    I'm wondering at the possibility this has been done before and not detected because no one looks there?

    And maybe we wouldn't detect it even if we looked. The only reliable way to check for a kernel rootkit is to boot a clean kernel (e.g. from a CDROM). Now how do you boot a clean BIOS ? Today they are all flash-based rather than socket-mounted.

    Will ever hear of microcode rootkits (stuff that alters the semantics of CPU instructions) ? Are microcode updates persistent ?

    AC

  6. Amazing ! on Robot Demonstrates Self-awareness · · Score: 5, Insightful

    Most ridiculously overhyped slashdot headline ! Ever !

  7. Re:Other than creating free software . . . on Innovation Happens Elsewhere · · Score: 1, Interesting
    what are some examples of innovation in Open Source software?

    Democracy. Laws produced by an open process have been considered an improvement over arbitrary rule by divine right. For more than 200 years.

    Civil code, penal code, vehicle code, machine code... see a pattern ?

    AC

  8. Re:and obsolete 15 seconds after release on New Consortium to Push UDI and Include DRM · · Score: 1
    The next step in this path of course is to outlaw the building of such dongles.

    Ever heard of something called DMCA ???

  9. Re:Security risk? on Ham Hears Mars Orbiter 45 Million Miles From Earth · · Score: 1
    apparantly they use the same symmetric key for more than one vehicle.

    So what ? Are you concerned about Martians reverse-engineering the NASAKEY out of Spirit in order to take control of the ISS ?

    Or were you thinking of OTP ?

    AC

  10. Re:Cars have VINs and license plates on No More Internet Anonymity · · Score: 1
    You went to McDonald's for lunch...did they record your license plate and/or VIN?

    Gas station probably do so, in case you speed away without paying.

    Did the city government make record of your license plate and VIN as you traveled through various intersections?

    I have no idea what all these automated radar speed checks and highway cameras record.

    Did the park and recreation department take a record of your entrance and exit times when you visited city park?

    Dunno, but I hear it happens in downtown London so they can bill you for traffic-related taxes.

    Oh wait... Were you being sarcastic ? McDonalds really logs your license plate ? Where the hell do you live ?

    AC

  11. Re:The only problem is, it doesn't really work ... on This Text Message Will Self Destruct · · Score: 1
    encrypting the traffic from the server to the client and allowing the user to read it only via a J2ME MIDlet

    ... which is equally ineffective, unless you have complete remote control over the phone.

    Come on folks, this is ridiculous. If such a service ever becomes popular, you can be sure that someone will offer a "workaround" that will allow you to store those compromising messages.

    Self-destructing messages could only work in a TCPA-like infrastructure, period. Mobile phones will probably get there sooner than PCs (if we don't pay attention), but until then it's all just cheap marketing.

    For more information check out *totally irrelevant link deleted*.

  12. Technical discussion on Totally Secure Non-Quantum Communications? · · Score: 2, Insightful

    Suppose Eve inserts a resistor in the transmission line. Now she can measure two voltages instead of one, and I'm pretty sure the difference in standard deviation will reveal the choice of resistors at each end of the line.

    If Eve fears that her resistor might be detected, she can use the intrinsic resistance of the wire instead. Unless we assume superconducting transmission lines...

    Nice try, though. This is probably related to the issue of determining who is talking when eavesdropping on a two-wire telephone line.

    AC

  13. So what ? on Depressed Hamsters Help Researchers · · Score: 1
    'If you give them an antidepressant they don't give up as quickly.'

    So what's the point exactly ? "Buy more drugs and be a happy productive citizen" ?

    OK I'm not being fair. The article also recommends light therapy.

    In other news: People with their monitor set at full brightness found less susceptible to Seasonal Affective Disorder.

    AC

  14. Re:How to market restrictive TCPA technology to us on Intel to Develop Hardware Rootkit Detection · · Score: 1
    Obviously, this "remote attestation" feature has the potential to be abused!

    Not necessarily. I'm perfectly comfortable with remote attestation being used by the administrator of a corporate or government network to enforce their policies. To do this, the administrator only needs to load a private key into each TPM and use it for remote attestation.

    But stangely enough, TCPA doesn't allow that. Instead, it forces the administrator to use the factory-configured key. Why, you say ? Because a TPM without a factory-configured key couldn't be used for DRM. When 100% of PCs have a compliant TPM, nobody can object to the deployment of DRM. But if it's only 95%, DRM won't be painless, and people will complain.

    So the way to make TCPA customer-friendly (including the remote attestation feature) is to change the specs so that the owner of a PC can make his own decision: either keep the factory-installed key and enjoy the wonderful world of DRM and cheat-free online gaming, or opt-out and take responsibility for his keys.

    AC

  15. Re:Why? on Robots With Square Wheels? · · Score: 1
    it's never been done before (using a "helicopter" of shifting weight to propel a car forward by it's properly aligned square wheels).

    It has certainly been done with regular wheels and ratchets, using revolving weights or other sources of motion. Ratchets are pretty common in MEMS designs. There are similarities with ultrasonic motors too.

    AC

  16. Re:Fixed prize limit? on NASA Prizes for Builder and Flyer Robots · · Score: 1
    the attitude indicator giro in a light aircraft never seems to need reseting

    So the artificial horizon does not need realigning, but the heading gyro does. Interesting. Are you really talking about a gyro-based attitude indicator ? Could it be that it aligns itself with gravity over long periods of time ? Or is it the old mechanical, floating sphere kind ?

    or the sun (a rather novel idea, but not much use at night).

    Not really the sun itself. But I believe infrared sensors have been used successfully to tell which way the sky is. Dunno whether it works at night.

    AC

  17. Re:Extra click to interact with objects in pages. on Microsoft Bows to Eolas, Revamps IE · · Score: 1
    This solution sounds like flashblock.

    Isn't that patent-encumbered too ?

  18. Re:Fixed prize limit? on NASA Prizes for Builder and Flyer Robots · · Score: 1
    To have a reasonable starting point, then there it is all about tweeking and evolving....

    Better get the initial design right. The aeroplane didn't evolve into the helicopter. Sometimes there is a leap of irreducible complexi... errm... oh well forget it.

  19. Re:Fixed prize limit? on NASA Prizes for Builder and Flyer Robots · · Score: 2, Insightful
    it can't cost over £10k to build the airframe

    Extra points if your design scales to the low-density atmosphere of Mars, and can fly slow enough to do the probe thing.

    the only hard part is that it needs to know where it is and what orientation it's in

    Well, that pretty much sums up one of the most painful problems in robotics.

    Yhe latter is trivial - use a giro like any other aircraft would

    No. Gyros drift. Aircraft autopilots rely on other things, like radio beacons on the ground, or GPS. Or the sun.

    The former could probably be done by taking either a stereo image from two cameras mounted on the wing tips

    To get accurate 3D information out of this, you'd need to be flying pretty close to the ground.

    or useing some sort of downward looking radar,

    Yes, lookup "IFSARE". Good luck tracking your elevation data while flying over a flat plain or lake - then you need the visual clues too.

    AC

  20. For those who can't read French... on France Hostile To Open Source Software? · · Score: 2, Informative
    Here's an explanation of how this relates to free software.

    - The french Parliament will soon vote on DADVSI, the national version of the european EUCD, which is a copy of the american DMCA. The vote is scheduled to take place at night just before Christmas, under an emergency procedure, while nobody is paying attention. This, in itself, is making people angry.

    - SACEM/SNEP/SCPP (the french equivalent of the RIAA) is lobbying for an amendment which reads very much like the american SSSCA/CBDTPA. This amendment can be understood as making DRM mandatory in any software which is ever used to violate copyright laws. That means FTP servers, web servers, etc. Since DRM in source code is easily circumvented, our RIAA could claim that any publisher of an open-source media player or file server is not doing their best to comply with this law.

    - SSSCA/CBDTPA was rejected in the USA. Hopefully the FSF's press release will help defeat the french version as well.

    AC

  21. Re:Why eight? on First Quantum Byte Created · · Score: 1
    I would propose using a 11-bit byte instead of 8-bit. There's something nice about that number.

    byte: approx -1000 - 1000
    short: approx -1M - +1M

    No. A 22-byte short would have a range of -2M .. +2M.

    AC

  22. Re:Patents are force on Blackberry Maker Facing Infringement Case In U.K. · · Score: 1
    Nobody knows how European swords were made any more.

    Because they didn't have a patent system in the Middle Ages, you suggest ?

    I bet you won't ever find the blueprints for a suitcase nuke at the USPTO either.

    AC

  23. Re:A far greater risk... on Is SETI a Security Risk? · · Score: 1
    "A far greater risk... is sending signals out."

    Well aren't we sending a lot of RF into space already ? And how far can nukes be detected from ?

    Then there is the issue of sending information out. As in ETs sending radio probes toward us every once in a while, and checking whether this causes any turmoil in our global communications. In which case they may think: "Damn, the sneaky apes on the third planet are eavesdropping on us. Time for a preemptive strike."

    AC

  24. Re:Enough! on Free60 Project Aims for Linux on Xbox 360 · · Score: 2, Insightful
    Running Linux on this hardware is just a fun side effect of the very important and immediate need to defeat trusted computing and digital restrictions technology

    Unfortunately DRM is not a technology that you can defeat with another technology. DRM is a societal choice and a collective state of mind that you can only defeat with politics.

    The 360 might be the first platform that will remain closed until it's obsolete. Or maybe the next one will. Anyway, is it sane to rely on a few hackers to protect consumer freedom ?

    AC

  25. Re:TCPA-"Games just want to be free". on Free60 Project Aims for Linux on Xbox 360 · · Score: 1
    Freedom works best when it's attached to a game one didn't pay for.

    What game are you talking about ?

    Do you think it should be illegal for me to run software that I wrote on hardware that I purchased for $400 ?
    Do you think Microsoft should have the exclusive right to sell programs that run on Windows ?

    Of course Microsoft is free to try and lock their market. It's not worse than Lexmark almost giving printers away and then making it illegal (DMCA-wise) for you to refill your overpriced ink cartridges.

    Oh well, I can't even believe I'm replying to an anonymous {RIA|MPA|BS}A drone.