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User: excelsior_gr

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  1. Re:Not as Sharp on Google Releases New Image Format Called WebP · · Score: 2, Interesting

    Hmmm... I don't think so. The jpeg artifacts (blurry edges) are not present in the webp format. Take a look around the ear of the football player (actually, around his face in general). The blue transition is more "pure" in the webp version. As for the detail, how many white lines in the middle of the road in the tunnel can you count? In the jpeg version I count 4, maybe even 5 with a little bit of imagination. In the webp next to it there are 5 lines clearly visible an a 6th one is very faint in the far end.

  2. Long iive... on IBM Demos Single-Atom DRAM · · Score: 0

    ...the memory of Richard Feynman! I cannot help thinking of him (well, through his books, I am too young to have met him personally) when I hear news like this. I find his teachings and ideas absolutely inspiring.

  3. Re:pretty much over the browser wars on Firefox May Soon Overtake IE In Europe · · Score: 1

    Heh, quite ironic given the fact that Spain is pretty much responsible for discovering the "other" half of the world...

  4. Re:No further prosecution? on UK Royalty Group Wants ISPs To Pay For Pirating Customers · · Score: 1

    Hey! there may be a market opportunity there! "Our internet connection costs more, but comes with the *paid right* to download anything you want!" Sure it will be a hassle for the ISP, but that's what one pays for, right? Interesting idea...

  5. Re:How will you know? on Survey Says To UK — Repeal Laws of Thermodynamics · · Score: 2, Insightful

    Because political parties are not even doing the things they promised *before* the elections. Should't they at least *try* to implement their political portfolios before they start pondering what their next move should be? In my opinion, this is just a distraction from their inneficiency to do what they promised, or at least something meaningfull. The fact that the discussion evolved into a Monty Python sketch shows that they cannot fool people any more with their rubbish. People are not taking them seriously any more.

  6. Re:I just wrote this guy an email: on A Composer's-Eye View of the Copyright Wars · · Score: 1

    Ahem... This is a little bit offtopic, but in the view of Socrates obeying the laws is part of being moral. This was one of the reasons he did not escape his prison (and was executed), while he could easily have done so.

  7. No autopilot? on Solar-Powered Ultralight To Try 24-Hour Flight · · Score: 2, Funny

    I can't believe that they couldn't allow even one of those inflatable ones because of the weight...

  8. Re:In Time? on NSF Gives Supercomputer Time For 3-D Model of Spill · · Score: 1

    I don't know what the oceanography codes can do, but for simulating the movement of a liquid in another liquid (oil in water) using CFD (as I would expect) one would probably need a surface tracking or capturing algorithm. Now, this can range from "pretty easy" to "freaking hard" depending on the accuracy needed. Maybe getting a rough idea of the direction in which the oil will move is not that complicated. Using COMSOL would give results pretty fast, but I the article does not say what they are using and I don't know how COMSOL performs on a cluster. However it does say that their resolution is down to 50 to 40 meters, which is pretty fine I guess, so maybe we are looking at a rather custom code. I am curious in watching the results...

  9. Re:In Time? on NSF Gives Supercomputer Time For 3-D Model of Spill · · Score: 1

    Actually, the GUI interface *does* exist! There are various packages to do that, e.g. Paraview and Ensight. One needs to output the numerical data in a format that these programs can understand (e.g. .vtp for Paraview that can be binary or even plain ASCII, with a really simple structure) and then it is possible to visualize the information in colorful animations, just like in the movies.

  10. Re:What? on NASA's Phoenix Mars Lander Killed By Ice · · Score: 1
    Your link unfortunately didn't work...

    because there's so little CO2 in our athmosphere the sublimation effect is much stronger than the freezing effect, dry ice won't last even if held below the freezing point.

    What do you mean by that? In order for a phase transition to occur, there has to be some change, either in temperature, pressure or concentration. If the conditions are such that a solid CO2 phase is dictated, you can be sure that it will "last"...

  11. Heavens no! on Could the Tumbleweed Rover Dominate Mars? · · Score: 1

    It could be mistaken for an alien!
    http://www.badmovies.org/movies/darkstar/darkstar4.jpg

  12. articles/reports/project proposals on AbiCollab Takes On Google Docs and Zoho Writer · · Score: 5, Informative

    Have you ever tried to write a document like an article with many co-authors, an interdisciplinary project report or proposal? Being able to simultaneously change the document saves a LOT of time. Over here, we go with LaTeX and SVN.

  13. You can make one at home on Boat Moves Without an Engine Or Sails · · Score: 1

    Here's the math and a nice picture (page 4):
    http://web.mit.edu/1.63/www/Lec-notes/Surfacetension/Lecture4.pdf

  14. it is cheaper too on Gaming In Sweden Bigger Than Football and Hockey · · Score: 2

    Gaming is also cheap compared to attending a soccer event. The stadium entrance fee ranges from 50 to 100 Euros and you get 90 min of entertainment. A PS3 costs about 400 Euros (depending on the version) and a game sales at about 25 Euros (prices of course vary), which means that a PS3 and two new games is roughly like going 6 times to the soccer stadium, i.e. "buying" 9 hours of entertainment. With two PS3 games you can definitely spend a LOT more time than that, plus the fact that you will only buy the console once.

  15. proper tag: on AVG Virus Scanner Removes Critical Windows File · · Score: 1

    itisnotabugitsafeature

  16. welcome in IRC... on Machines Almost Pass Mass Turing Test · · Score: 1

    ...where men, are men,
    women, are men,
    and 14-year-old girls are FBI agents.

  17. Re:Analysis and visualization on Advanced Excel for Scientific Data Analysis · · Score: 1

    I would recommend gnuplot. You can spawn it from Python using the Popen function, or even integrate it into your C++ code (it is written in C).

    Also, I would suggest that you do as much numerical work in C++ and Python as possible. This will also save you time, since you won't have to process the data after the output (or at least will make the overhead less). You can also use Fortran routines that have been robustly used for regression since ages, and that are usable from Python and C. For example, subroutine lmdif and its flavors in library minpack (netlib) will beat Excel's ass in regression any day of the week.

    And it all comes to the decent price of $0, although you get a lot more than you pay for!

  18. This is not Excel, its VBA on Advanced Excel for Scientific Data Analysis · · Score: 3, Insightful

    So according to the book, here's the recipe:
    1. Write your data analysis software in VBA
    2. Use the Excel cells, buttons, bells, and whistles for the I/O
    3. Profit!

    The math is actually irrelevant. Any computational mathematics book that respects itself uses pseudocode for the examples. If it is possible to program in one programming language it should be possible in any other language too.

    I tried it too, although I wasn't nearly as crazy to do any numerical computations in VBA. I wrote the program in pure good old Fortran 95, wrote some VBA scripts to read the Fortran ASCII output, and set everything else up in Excel that my boss liked (I'm a chemical engineer). There you go: it's fast to program, fast to run, easy to maintain.

    I would like to see anyone try to keep up with the Microsoft paraphernalia between VBA-Excel versions, if the whole thing is written in VBA. Not to mention the problems that I had with the locale when I tried to run the VBA code in a computer running a german version of Excel that had decided that the decimal point is there as a thousands separator and the comma was used as a decimal point. The setting for it in Excel was nowhere to be seen (I still haven't really figured it out. The central Windows setting seemed to have no influence on it, although I suppose it should) and 1.234 was then 1234 and 1.2E-02 was a character string. Oh, the pain... Thankfully, my *basic* Fortran part absolutely did not care, it just worked, and only the I/O needed to be reviewed.

    Try to send the program to a customer without knowing what kind of Excel version he is running. We had to go as far as Office 97 just to be sure, and there was still the problem with the locale. After a year, the I/O was useless, but who cares? It was only 1% of the code.

    I would still use Excel, but for nothing other than the most trivial tasks. There are wonderful libraries out there that work with Fortran and produce very nice graphs on the fly.

  19. Re:Any chance we can draw circles and boxes now on GIMP 2.6 Released · · Score: 1

    Just *import* your photo in Inkscape (copying and pasting won't work)! Then you can draw on it anything you wish!

  20. Re:What I have to say... on IOC Trademarks Part of Canadian National Anthem · · Score: 1
    Then what about Olympic Airlines? http://en.wikipedia.org/wiki/Olympic_Airlines/
    Or the soccer team Olympiakos? http://en.wikipedia.org/wiki/Olympiacos_FC/

    When the Olympic games were held in Athens in 2004 I didn't hear any such discussions back then. Although lots of souvenir retailers were pissed because they were no more allowed to sell the merchandise that have been selling for ages... Always after the small folk I say...

  21. Re:They never had a chance on Toshiba Making Funeral Plans for HD DVD · · Score: 1

    Yahoo! The format-war is over!
    Oh, wait...

  22. Feynman, anyone? on Plexiglass-like DVD to Hold 1TB of Data · · Score: 1
    "new technology that write bits at the molecular level on the florescent-colored polymer"

    It can grow even more, if it goes down to the atomic level...!!

  23. Google turf... on A Review of the $200 Wal-Mart Linux PC · · Score: 1
    From the article:

    "None of this was anywhere near as annoying as all the crapware that comes installed on many Windows boxes, but it did give me a little bit of the same feeling that my eyeballs were being treated as a commodity."

    What is the difference?

    Anyway, I prefer Google than Microsoft, but then again that's just my opinion...

  24. Re:So be it on How the U.S. Became Switchboard to the World · · Score: 1

    Such claims don't even need a wiretap.

  25. So be it on How the U.S. Became Switchboard to the World · · Score: 1

    I'm not an American citizen, but I really don't care about being tapped. I have nothing to hide, and if I ever get criticized or ever prosecuted for my ideas or ideals, then so be it. There are many like them, but these ones are mine.