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User: cnettel

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Comments · 1,662

  1. Re:What's the problem? on Roundest Object In the World Created · · Score: 1

    I would be very surprised if they used anything but isotopically pure silicon. The natural distribution is bound to be at least slightly variable and it would tie that unit to the environment on Earth far more than any of the other units do.

  2. Re:AP News Article on Mars Soil Appears To Be Able To Sustain Life · · Score: 1

    What do you think makes the soil alkaline?

    What do you think would make it acidic?
  3. Re:Multicast? on Net Neutrality vs. Technical Reality · · Score: 3, Interesting
    No, but can do more complex scenarios. Let's say that we pipe the first sixty seconds through unicast. If the bandwidth of your end pipe is really four times that, you could pick up a continuous multicast loop being anywhere within three minutes of the start, and then just keep loading from that one, buffering locally. You need your local pipe to be wide enought that you can buffer up material while playing the current part, but even if the multicast is just done in realtime video speed, and there is a single one looping contiuously, you should have the expectation value of being able to switch from the multi feed from unicast after half that time.

    If you want on-demand, and NO local storage, then you are indeed in trouble.

  4. Re:I've spoken about this before... on Cell-based "Roadrunner" Tops Elusive Petaflop Mark · · Score: 1

    Platform games could be done on a NES. Asheron's Call and other 3D MMORPGS are turning ten soon. A somewhat immersive virtual 3D world could be done years ago. Making a nice UI out of it will not require 5 Cells. (Really good speech recognition might need it. Current approaches do not get that much better by throwing CPU power at them, but it at least seems possible. Walking around a virtual world matching the real one in all the bad ways to actually get stuff done seems stupid. The best aspects of the desktop UI analogy were not, actually, that it was a tremendously realistic simulation of working at an actual office desk... it wasn't. It was close enough and provided an efficient working environment.)

  5. Re:Twisted Conclusion on Scientists Surprised to Find Earth's Biosphere Booming · · Score: 1

    Look up C4 plants and other adaptations. The matter of getting enough CO2 in, while not evaporating too much water, is critical. Few plants will die from it, but they will sure grow far slower. By increasing the CO2 concentration, the tipping point where photosynthesis can still go on efficiently is shifted.

  6. Re:Yeah and then there are "dead zones" on Scientists Surprised to Find Earth's Biosphere Booming · · Score: 1

    What I'm referring to as a seeming "paradox" is not only the fact that the base of the food chain is dramatically expanded by nutrients -- but that the organisms making up this foundation produce _oxygen_ from photosynthesis supporting algae grazers with both food _and_ oxygen.

    Why don't the smaller, rapidly-reproducing zooplankton take up the gauntlet?

    Because algae consume oxygen when there is no sunlight, just like any other plant. If there's sufficient quantities of algae, they will suffocate any higher life form that requires oxygen.

    When they die, they also reach the regions at higher depths, where oxygen is depleted when decomposing them. Naturally, anaerobic or middle-ground low-oxygen organisms will still live there, but that will efficiently stop other organisms. As some eggs and larvae for higher animals first develop in the sediments, this can affect the complete cycle tremendously.
  7. Re:Summary should have a shout out on Cell-based "Roadrunner" Tops Elusive Petaflop Mark · · Score: 1
    Graphics cards are easily available. The PCI Express interface is fast enough in both directions.

    Code is not available for any task, though.

  8. Re:Permanent... on What Shall We Do With the Moon Once We Get There? · · Score: 1

    The speed of light is for all known practical purposes the speed of EM radiation. Any FTL communication scheme is most likely to do something radically different. Even if EM would be involved, it wouldn't make sense to still call it radio, as the normally propagating sinuouid waves will not do.

  9. Re:Nah... on Windows XP SP3 Causing Router Crashes · · Score: 4, Insightful

    If you can crash the router, you have a possible DDoS attack. If you can do it on the WAN port, it would certainly be a flaw in the device. Depending on the crashing behavior, it is also possible that this is actually an exploitable path that could be used to permanently reflash the router for malevolent purposes.

  10. Re:Obfuscation on Kurzweil on the Future · · Score: 1

    Intentional obfuscation over any greater scale tends to show clear patterns. Having something that is in the range of a couple of GB of data, knowing that it is basically just random junk that happened to pass most of the regression tests for each new version, and then trying to find it what it all does -- that's what you are facing for the human genome.

  11. Re:Wouldn't that *help*? on Kurzweil on the Future · · Score: 4, Interesting
    Any work with genetic algorithms show that you can very easily get a solution containing a lot of crud. Pruning too heavy on fitness in each generation will give you far from optimal results. The point is that each incremental change in our evolutionary history did NOT improve fitness. It just didn't hurt it enough, and might have combined with another change to increase it later on.

    It all boils down to the result that an intelligent organism capable of building a social, technological civilization could have been quite different from us. Even if it looked like us, details as well as overall layout of the brain could supposedly have been quite different, but still giving an equivalent fitness. A simulation reproducing everything is not feasible, so how do we find out which elements are really relevant?

  12. Re:So Guinness is the anti-anti-matter? on Does Antimatter Fall Up Or Down? · · Score: 1
    If anti-matter "falls" up, then masses of ordinary matter repel antimatter. This would mean that there will be no gravitationally stabilized chunks of matter and anti-matter (which would sooner or later annihilate), but rather that over scales where the gravitational force dominates, we would get separated regions.

    Like many other posters, my "physical intuition" (indoctrination in GR) tells me that this is most unlikely, but it would have tremendous consequences for cosmology.

  13. Re:plug-and-play javascript engine on Next-Gen JavaScript Interpreter Speeds Up WebKit · · Score: 1

    As much of the actual GUI in Firefox is dependent on its Javascript implementation, what you are proposing is far from trivial (at least, you have to agree on an object model, and then you are actually close to Windows Scripting!).

  14. Re:Joel on Software: Idealists vs Pragmatists on Microsoft Pushes Devs With Wider IE8 Beta · · Score: 1

    Any non-trivial project of portable C code has autoconf or a bunch of defines and ifdefs, or some conditionally compiled modules (or any combination of these), to actually achieve that portability. It's the equivalent of user-agent hacks.

  15. Re:The Price of Flash on Intel & Micron Show 34-nm, 32-Gbit Flash Memory Chip · · Score: 1

    Well, for a few-GB drive the interface logic will dominate the cost. Compare how a single-platter, single-side disk doesn't really get that cheap.

  16. Re:Accidentents. on Microsoft Urges Windows Users To Shun Safari · · Score: 1

    Even better, include the shortcut arrow (of course it can be customized, but you can target the specific Windows version and you would hopefully not fool the 0.1 % who edit the registry or use TweakUI for this aynway).

  17. Re:So? on Windows 7 Won't Have Compact "MinWin" Kernel · · Score: 2, Interesting

    The distribution is also changed from NT4/2000/XP. Basically, all calls (or all calls that matter) to the driver will be made in user mode. You can write a driver that's theoretically all user mode and just pumps the commands over TCP/IP to some piece of hardware, or anything. To do that in XP, you had to put it in kernel mode. A real driver will still have a section in kernel mode to actual send it to the hardware, and this can be bulky if you really want to. It doesn't have to be, though, which was the case in XP.

  18. Re:This could be useful on Gaining System-Level Access To Vista · · Score: 2, Informative

    There are, however, plenty of simpler way to do so from admin. While admin don't have full token directly, it can achieve it in any number of ways.

  19. Re:Baryonic dark matter... on Galaxies Twice As Bright As Previously Thought · · Score: 2, Interesting

    The CMB has overall a black-body (heat) signature. It's shifted, however, most reasonably explained with the expansion of the universe and the associated Doppler effects. An object at the current "background temperature" would NOT emit radiation with the background signature. Nothing with a well-defined temperature would emit anything like it today, unless it's exotic in some way... That makes the assumption of non-interaction just as plausible (from a layman perspective).

  20. Re:So there's more dust than previously thought... on Galaxies Twice As Bright As Previously Thought · · Score: 3, Informative

    Just to make things clear, even a doubling of the amount of mass in stars would only reduce the amount of dark matter by a few percent (and then we have the dark energy...).

  21. Re:fewer than half? on NASA Phoenix Mission Ready For Mars Landing · · Score: 1
    Wikipedia whoring.

    Quite a few included rovers/landers in one sort of another, and many failed. The first attempt was a Soviet probe in 1962, it didn't even leave Earth orbit properly, but it was a planned mission.

  22. Re:Wah? on Quantum Cryptography Broken, and Fixed · · Score: 1

    Eve can read the stream if she already has the key and state of the transaction. She cannot read the stream in a hope to apply brute-force cracking, or similar, to it later. Naturally, if she has the key(s), and access to the medium, she can fake the identity of the sender more or less perfectly.

  23. Re:Come back after you've turned off anti-aliasing on A Billion-Color Display · · Score: 1

    The ClearType used by Windows really gets me. Yes, it does make the shapes smother, but what it does is turn the edges into rainbows.
    This may be due to your monitor not being specified correctly. IIRC, there are two main types of LCD panels: RGB and BGR (different color orders), and in order for ClearType to work correctly, it has to know which one you're using. I've noticed if someone does a non-lossy screen capture of some ClearType text on a computer set up for the opposite sub-pixel color order than what I use, the text looks crappy and has that rainbow effect. Another aspect is screen pivoting, analog connection and/or aggressive contrast enhancement in GPU or monitor.
  24. Re:A Service... on Coding Around UAC's Security Limitations · · Score: 1
    You can reduce your security token in Windows. It won't affect which user is listed in Task Manager. (i.e. you can modify your token and impersonate a lower-level user in each thread, but the process itself will still be owned by the spawning user)

    This means that well-behaved user-mode code can very well be started as LocalSystem and still not pose a threat (compare to kernel mode code, which you can't make "safe" just by an API call).

  25. Re:I feel your pain on Laptops Screens, Glare or Matte? · · Score: 1

    Cheap TN, the killer of proper ClearType.