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User: Ruie

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  1. Re:heh on Why Linux Can't 'Sell' On the Desktop · · Score: 1

    My experience is that Windows is missing lots of features. No SSH support; no support for filesystems other than NTFS and FAT; no low level disk tools (dd); poor NFS support; doesn't come with a decent text editor.... I could carry on, but you get the idea.

    You forgot the most important items: compiler and debugger..

  2. Re:SN2012aw is ready for its closeup on Possible Supernova In Nearby Spiral Galaxy · · Score: 1
    No, as we don't know exactly what the gravitational signal from a supernova will be and as the energy released as gravitational waves is estimated to be relatively weak, it is highly unlikely that modern interferometers will detect a supernova outside of our galaxy.

    Also, LIGO and Virgo interferometers are presently undergoing an upgrade to increase sensitivity, GEO600 is the only sensitive instrument in operation, just in case we have a supernova close by or an inspiral not too far away (but not too close either ;) ).

  3. Re:Relativity on Possible Supernova In Nearby Spiral Galaxy · · Score: 1
    Your comment is only correct in empty vacuum ;)

    However, in our universe Lorentz invariance is weakly broken. For example, one can pick a reference frame where CMB radiation does not have a dipole moment.

  4. Re:Link gives 404? on Instant Messaging With Neutrinos · · Score: 4, Funny

    404 just means "cross section too low, send more packets"

  5. Re:Observed Dark Matter? on Mysterious Dark Matter Blob Confounds Experts · · Score: 4, Informative
  6. Re:Observed Dark Matter? on Mysterious Dark Matter Blob Confounds Experts · · Score: 5, Informative

    One way to figure out gravitational field from a static image is to look at galaxy distribution behind the gravitational field. If it is squishes space in one direction while stretching it in the other, you will see more galaxies longer in one direction then in the other, so you can build a map of distortion and compute gravitational field from it. The result will be coarse, but you will see large concentrations of matter.

  7. Re:Astronomical distances and poetry on New Horizons: One Billion Miles From Pluto · · Score: 1

    The multiverse outside our universe is infinite because time is infinite, therefore it doesn't have a size.

    Actually, the latest estimates suggest there are 1e500 different possibilities for a universe - a larger number, but sure not infinite ;)

  8. Re:His brain is better than mine on UCLA Professor Says Conventional Wisdom on Study Habits Is All Washed Up · · Score: 1

    If the subject at hand is math, or programming, or laying bricks, for example, practicing what I just heard from the class do tend to re-enforce what I recall

    But what if the subject in hand is quantum mechanics, or nuclear physics, or subjects that are more conceptual than practical?

    You must be joking.. Quantum mechanics is math !

  9. Re:Not like a standard laser on Scientists Create World's First Atomic X-Ray Laser · · Score: 1
    LASER - light amplification by stimulated emissing of radiation. So it could just be an amplifier. However, even if you want directionality the resonator is still not necessary - you just need to assure that the mode of your choice has higher gain than other modes.

    For example, make your lasing medium into a long thin rod - it will emit along the rod axis (in both directions).

  10. Re:This on Scientists Create World's First Atomic X-Ray Laser · · Score: 3, Informative

    That's how LHC works, they just use particles other than gamma rays. 3.5 TeV corresponds to wavelength of 2e-19 m.

  11. Re:Argh on Nano-Scale Terahertz Antenna May Make Tricorders Real · · Score: 1

    No reason we can't improve on it.

  12. Re:Lobbying vs Bribery on White House Petition To Investigate Dodd For Bribery · · Score: 1

    Well, actually A) does not work that well because if enough companies choose B and then fail it makes a large disturbance in the market and everyone gets whacked. So you are passing up profits now in exchange for a very uncertain amount of stability in the future.

  13. Re:Ban the use of faucets! on Megaupload.com Shut Down, Founder Charged With Piracy · · Score: 1

    We pay for Internet service, and the RIAA/MPAA do not claim ownership over your bandwidth. We do not punish people for drinking their tap water, even though bottled water companies exist specifically to sell drinking water. Every fluid ounce of tap water that you drink is a fluid ounce you did not pay a bottled water company to drink.

    The only difference is that right now, nobody has a concept of "drinkingrights" but we do have a concept of "copyrights."

    You are actually wrong - see Water rights

  14. Re:Toxic waste on NASA To Investigate Mysterious 'Space Ball' · · Score: 1

    Plutonium RTG is not very dangerous. Pu 238 radioactivity is all alpha (ionized helium) and it is encapsulated, so it just heats up (a lot). As long as you don't swallow it or hug it in your sleep you'll be fine. They were even implanting pacemakers powered by plutonium, worked fine for decades.

  15. Re:Configurability on Examining the Usability of Gnome, Unity and KDE · · Score: 3, Informative

    I disagree completely. KDE's configurability is asinine. When KDE apps run under another WM, they use their own KDE defaults like click-to-activate vs. click-to-select, double-click-to-activate. It's annoying as hell to run K3B under Gnome 2, because it does not behave like anything else on my desktop. The only reason I put up with it is that they did the best job of a burning utility I've seen since Nero, and maybe even better than Nero (note I'm talking the old "advanced" Nero tools, not the shiny crapware wrappers they install be default with the new releases.)

    With the way KDE is structured on top of Qt, it should be possible for a KDE app running under Gnome to detect that fact and "import" it's settings and defaults from Gnome's environment. The reverse should also be true.

    It's almost to the point of frustration that I prefer applications that just ignore any standards at all and do their own thing entirely. At least they're consistently screwed up, following their programmer's diabolical visions of UI hell imposed on the user community. :p

    Heh.. KDE has a checkbox (enabled under Kubuntu, for example) to make Gnome apps behave and look more like KDE ones. I would expect that Gnome users should extend Gnome settings application to just export their settings to KDE, should not be that hard.

    Btw, what really annoys me about running Gnome apps (anywhere) is the stupid file selection dialog. It's like somebodies design goal was to prevent users from accessing files, but they did it incompetently.

  16. Re:Configurability on Examining the Usability of Gnome, Unity and KDE · · Score: 1

    Please explain how to install GNOME 3 on Fedora 16 or the latest Ubuntu.

    I assume you meant Gnome 2 ? - just download tarballs and compile..

  17. Re:There is no "size" in this universe on Smallest Known Black Hole Found · · Score: 1

    Planck length.

  18. Re:interesting, but vaguely in line with estimates on Smallest Known Black Hole Found · · Score: 1

    Replying to myself: it appears that the minimum is related to the Tolman–Oppenheimer–Volkoff limit for the maximum mass of a neutron star, which isn't known to great accuracy. Wikipedia cites a 1996 journal article with an estimate of "approximately 1.5 to 3.0 solar masses".

    There is a recent observation of a neutron star with 2.0 solar mass (+/- a small uncertainty).

  19. Re:Asia goes up! on Apple Outsources A5 Chip Manufacture ... To Texas · · Score: 1

    To be fair, it looks like this actually created 500-700 jobs. That's still not what people might expect from a $9 billion plant, so the point of my facetious comment stands.

    But, suppose each person costs the company $200K on average (with the salary being $100K), then each employee is responsible for $20M worth of equipment - a factor of 100 over what they are paid in a year. This is actually quite reasonable and what you would expect for the society.

    It also makes sense from economic standpoint - the equipment depreciates and the cost to have an employee maintain it can be factored in. If it is substantially more than 1% then you are more in the service business rather than manufacturing.

  20. Re:Not in 2012 for me on Will Windows 8 Be Ready For Release In 2012? · · Score: 4, Insightful

    "Those who do not understand UNIX are doomed to reimplement it, poorly."

  21. Re:More info about the star? on Kepler Confirms Exoplanet Inside Star's Habitable Zone · · Score: 1

    I'm no expert on this but I've got an awesome app on my iPhone called Exoplanet. It's always got new planets like this one before I even read about them.

    The host star is KIC10593626

    It's mass is 0.97 solar masses It's radius is 0.98 solar radii It's 587.1ly away Stellar Metallicity is 0.000[Fe/H] Spectral type is G5 Magnitude (V) 0.000 Right ascension is 19h 17m 70s Declination is +47* 52' 90"

    Hope that helps you, And please tell me if you think this would be visible through a telescope. There's a dark sky preserve near here with a 20" telescope that I've been meaning to visit

    I wonder whether 0 metallicity is the measured value or they just did not have anything to put into the field. If it is metal poor then the star is very old, and it is likely the planet is significantly less dense than Earth.

  22. Re:Can we start using GMT/UTC in posts please? on On December 10, the Last Lunar Eclipse Until 2014 · · Score: 1

    TFA might do that but TFS is supposed to be written by editors. Editing these things should be one of their tasks, but that is work and they rather copy and paste and be done with it.

    I am not familiar with TFA and TFS - how many hours from UTC is that ?

  23. Re:Nothing special on Ask Slashdot: Parallel Cluster In a Box? · · Score: 1

    I recall it is possible to fit a 16x card in a 1x slot (Obviously at 1x performance), but this requires the card be hacked. Literally. With a hacksaw. All the power and essential control lanes are at the front, and if 15 of the 16 data lanes are not connected then the card will simply not use them.

    Impractical. GPU cards have issues with bandwidth to the host anyway, cut it to 1x and you will be much better of with a plain multicore system.

  24. Re:Nothing special on Ask Slashdot: Parallel Cluster In a Box? · · Score: 1

    Just put bunch of GTX cards to nice, big server case with enough fans. You are hardly going to find any cheaper alternative.

    That's actually pretty hard to do as you need a motherboard with lots of multiple-lane PCIe connections.

  25. Re:Why only $13 Billion? on Fed Gave Banks Eye-Popping Emergency Loans, Without Telling Congress · · Score: 1

    They really must be incompetent to only make $13 Billion on 7.77 Trilllion of interest free money... How long is the term on these loans? Has it been paid back?

    These are overnight loans and the profit on treasuries is fairly low. So, altogether, the Fed did amazingly well - they stabilized the banks at a cost of only $13 billion, which is ~0.1% of the total assets held by the banks.