Slashdot Mirror


User: ndevice

ndevice's activity in the archive.

Stories
0
Comments
97
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 97

  1. Re:More Parallelism on Western Digital Working On a 20,000 RPM Drive · · Score: 1

    As pointed out in a previous comment, it's difficult to precisely address parallel tracks on different platters because of uneven thermal expansion in each of the platters. However, multi-bit perpendicular recording is a similar concept.

  2. Re:Add heads? on Western Digital Working On a 20,000 RPM Drive · · Score: 3, Informative

    It's been done before, iirc, but they tend to be more expensive, and the multiple heads run the risk of creating unintended harmonics. Most of the time it would be cheaper and faster to use two drives with one set of heads, than one drive with two sets of heads.

  3. Re:-1 : redundant on Sun Turns to Lasers to Speed Up Computer Chips · · Score: 1

    Watch out for sun to buy out, or merge with Analog devices soon. If they get their lasers going, they could put them on those Analog Devices DSP parts too.

  4. Re:Python is part of the answer on Open Source Math · · Score: 1

    ironically, it's all a house of cards

  5. Re:For the uninitiated... on SHA-1 Cracking On A Budget · · Score: 1

    it would give new meaning to "turtles all the way down"

  6. Re:Because it would cost them money on Why Don't Companies Release Specs? · · Score: 1

    McDonalds canada provides a nutrition calendar And you're right - it's probably better not to know.

  7. Re:I still hear MDCT distortions on Audio Compression Primer · · Score: 1

    Cymbal crashes are the wideband of audio. Hard to compress with frequency transforms.

  8. Re:Nondeterminism on Ho, Ho, Ho · · Score: 1

    I think you mean duality - as in wave-particle duality. Or non-collapsed quantum states.

    So with the quantum argument (badly mangled), Santa is a wave function that allows him to be everywhere with a certain probability, and only when you look to see if you have a present or not do you collapse the wave function to detect whether or not Santa has actually visited you.

  9. optical links on Internet-By-Airship Scheduled For Trial Next Month · · Score: 1

    At only 70k feet, optical links between blimp and ground and blimp and blimp may be possible. We already have optical links that span distances of around 5 miles IIRC. The upside is higher potential datarates, and the downside is more accurate pointing technology to make sure your beam hits where it's supposed to, although the article does mention that the wind forces expericed up there aren't that strong. And clouds might do a number on you too, but again, at 70k feet, blimp to blimp might be possible.

  10. Re:Informative!? on Siemens Develops 1 gbit/sec Wireless Link · · Score: 1

    in my defense, it was a bit late at night; but you're right of course.

    However, how much power can you practically pump out of those 3 transmitting antennas (taking battery life into account)? And how much processing power can you spare to recover that singal (again, also taking battery life into account)?

  11. Re:Faster than 3G .. heck, its faster than 802.11G on Siemens Develops 1 gbit/sec Wireless Link · · Score: 1

    If this is a free space system, they might have to compensate for the higher speeds with stronger signals (or live with shorter distances), shannon's law and all - of course we haven't approached those limits yet (I think), so it might be doable.

  12. only 100 MHz bandwidth on Siemens Develops 1 gbit/sec Wireless Link · · Score: 2, Informative

    according to the article, the bandwidth is only 100 MHz for the experimental setup that they have running.

    1Gb/s is supposed to be what it's capable of in the future - or at least that's how I read it

  13. Re:Thinking on Lying Makes The Brain Work Harder · · Score: 4, Funny

    only on slashdot can truth and lying be turned into a discussion of how the hamming distance of a set of predicates from reality may be used to measure the magnitude of a lie

  14. SODIUM BOROHYDRIDE on Fuel Cell Powered Scooter · · Score: 3, Interesting
  15. very simple processor on Apollo On Board Computer Emulator · · Score: 5, Interesting

    Took a quick scan at the architecture of the machine, and I'm suprised that it's so simple.

    People say over and over again that simple handheld calculators are more powerful than that thing, and it seems that the oft-parroted line is more accurate than they realize.

    Add to that: RTL (before TTL) and magnetic core memory bring up the nostalgic value.

  16. Re:In other News... on Design Wanted For Antarctic Base · · Score: 1

    if you had a beowulf cluster, you could use the excess heat to melt the accumulated snow off your roof

  17. Re:Illegal? on Beastie Boys' New Album Silently Installs DRM Code · · Score: 1

    You could pull the same thing back at them: send them a letter with an enclosed eula defined according to your own terms. Make sure you include some content of value to them just in case - perhaps some feedback from you.

  18. Re:trivial... on Send A Message To An LED Sign · · Score: 1

    trivial perhaps, but a waveform updating at 300 (or even 9600) bps probably won't be too impressive.

  19. Re:Welcome to the future. on Life-Ruining Browser Hijackers · · Score: 1

    have you been reading arthur c clarke?

  20. if spreadsheets were more high level... on The Subtle Tyranny Of Spreadsheets · · Score: 1

    then maybe we wouldn't have things like excel pacman
    http://www.geocities.jp/nchikada/pac/

    Who wants a nice way of modeling when you can have fun with your spreadsheets?

  21. Re:please everybody on The Subtle Tyranny Of Spreadsheets · · Score: 1

    that, or people are conditioned to think in grids. Think css vs. table layout.

    But all good and well if it works for them. Who can tell the difference once the thing is pdf'ed?

  22. Re:Am I crazy? on Congressional Anti-Spyware Bill Introduced · · Score: 1
  23. commet gets a friend? on Successful Rosetta Lift-Off · · Score: 2, Insightful

    Rosetta's heading out to drop the 'Philae' lander onto Churyumov-Gerasimenko. Curious name for a lander.

    I wonder how the lander is going to stay on the comet once the comet gets closer to the sun and starts ejecting mass.

  24. lucy is over there too on The Galaxy's Largest Diamond · · Score: 1

    all these replies, and still no mention of lucy - in the sky with diamonds.

  25. just higher switching speeds on UIUC Researchers Create Light Emitting Transistor · · Score: 2, Interesting

    Since switching speed is also a function of the size of the device (capacitance), this transistor probably wouldn't produce any benefit over the LED version.

    The article seems to be saying that they could get higher switching speeds out of this transistor, but we still have inefficiencies here: either the amplified output is used, or the optical output is used. Why would it be necessary to use both? And if the benefits come from not having to drive interconnects between the transistor and LED, we already have integrated transistor/led packages on the same substrate. It might be a better idea to make the emitter current the light emmiting part because then you'd be able to save on component costs.