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User: buchner.johannes

buchner.johannes's activity in the archive.

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  1. Re:why, standards, of course on Rapid Browser Development Challenges Web Developers · · Score: 1

    I have never understood why people love to shoot themselves in the foot by targeting browsers with weird hacks. Just use the common ground that all browsers support. Design additional elements so that the browser can degrade smoothly to something simpler if it does not support them -- This degradability is not well understood or practiced by the average web developer in my eyes.

  2. Re:Hackers? on US Nuclear Power Enters the Digital Age · · Score: 4, Insightful

    Isolate the system, for Christ's sake

    No, go further. Isolate all parts of the system. Only have well-defined 1-1 communication where you need it. I.e. no network where everything talks.

  3. Re:Data links (via Coral Cache) on A Map of the Universe, 10 Years In the Making · · Score: 1

    if you want to redo just the redshift plot, you don't want 2MASS. see http://science.slashdot.org/comments.pl?sid=2189074&cid=36259732

  4. Re:Weird spiderweb/neuron concentrations on A Map of the Universe, 10 Years In the Making · · Score: 2

    Here are good starting points on voids and filaments.

  5. Re:Data links (via Coral Cache) on A Map of the Universe, 10 Years In the Making · · Score: 1

    So for the southern hemisphere you want to fetch the 6dF catalogue, for the northern, zcat.
    The best to get those is using vizier, for instance as two tab-separated file.
    zcat -- http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VII/193 -- select zcat -- select column vh only, this is recessional velocity in km/s
    6dF -- http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VII/249 -- select spectra -- select column z only, this is redshift

    You will find conversions between distance, velocity and redshift z in http://en.wikipedia.org/wiki/Redshift
    The first 2 columns will refer to the RA/Dec. You can plot these directly, or optionally convert into some other coordinate system (e.g. galactic). http://en.wikipedia.org/wiki/Celestial_coordinate_system

  6. Re:Google talk on Ask Slashdot: FOSS, Multiplatform Skype Replacement for PC-to-PC Video Chat? · · Score: 1

    Google Talk is not FOSS. look at the title.

  7. Re:Depends on commit style on 10,000 Commits To an Open-source Project · · Score: 1

    Well this is how you should do it. Merging and Bug-tracking will be way easier this way, rather than one commit saying "improved everything today"

  8. Re:The Slashdot system seems to work pretty well on Ask Slashdot: Going Beyond Comment Threads? · · Score: 1

    This http://www.youtube.com/watch?v=k2w2WBCn7ug sounds like a good approach to get a result out of a discussion.
    Except using a group of moderators that have to click through *every* post is not a smart idea, copying the slashdot system of moderation would be good instead.

  9. Re:Milky Way on Worldwide Night Sky Stitched Together In 5 Gigapixel Image · · Score: 1

    I've never seen any notion of the Milky Way in the sky... how clear is it in an unpolluted area?

    That is sad. It's probably becoming more and more common for the next generations to never have experienced how we are in this dish of stars, and to see our neighboring galaxies. A big loss in understanding the bigger world.

  10. Re:OK, I'll bite on Ask Slashdot: Going Beyond Comment Threads? · · Score: 1

    You are mistaken. To break US law, you have to be in US jurisdiction (i.e. in the country).
    In the case of Assange, he can't be trialed in the US, as he wasn't in the US. He can be trialed in Sweden for breaking Swedish laws while he was in Sweden.

    Because no matter what citizen you are, when you enter a country you accept their laws as they are.

    Violating the universal human rights directly, e.g. through international terrorist acts, is a pretty solid case, as the countries of the world worked out international laws. Executing the law in a foreign country is a very hairy affair, especially when acting as one country. And believe it or not, even Osama Bin Laden had human rights.

  11. Re:Full on Worldwide Night Sky Stitched Together In 5 Gigapixel Image · · Score: 2

    So, where is the Earth?

  12. Re:that always bothered me on Signs of Dark Matter From Minnesota Mine · · Score: 1

    Note that the solar system co-rotates with the Milky Way matter around it, so the 225-250 Myr period with respect to an inertial frame is not relevant for dramatic effects.

    Not so. The movement of stars is not similar. The rotation of the Milky way is far from homogeneous. It is thought that some stars are passing much faster than others -- kind of like a traffic model -- which creates the spiral arms, although that isn't fully understood too. There are stars bouncing up far from the plane, through the plane down and up again. There are all kind of weird distortions, also caused by Supernovae pressure, new stars, etc. It is like a boiling soup in 3D, the model of a stationary disk is not correct.
    For instance, from the chemical composition of the sun we know it originated from a different region of space, and that it travelled faster than its current surroundings.

  13. Re:Exporting your bookmarks on YouTube Founders Acquire Delicious · · Score: 1

    http://www.bibsonomy.org/ is an alternative run by a university, and it can import del.icio.us. It's pretty open in where you can export to. I just switched to them.

  14. Re:short-sighted on Reform the PhD System or Close It Down · · Score: 1

    When Heisenberg and Schrödinger formulated the equations of quantum mechanics, they didn't think of TV sets, computers, or the internet.

    I'm gonna go out on a limb here and say that quantum mechanics isn't required for TV sets, computers, or the internet. Sure, electronics, such as diodes and transistors is based on quantum effects, but no understanding of quantum mechanics is necessary to stick such components together.
    You don't have to understand the fundamentals to make use of the peculiar, but repeatable observations.

    That is not to say developing the theory was useless. Certainly, electronics were and are improved based on the fundamental insight behind the scenes.

  15. Re:How can we communicate with them? on Brainstorming Clever Ways To Detect Alien Civilizations · · Score: 1

    The light from planets is omnidirectional, time-continuous and over a frequency-continuum. You can save energy by only submitting in one direction and for a short duration and at a specific frequency. That's why SETI is looking for pulses from exoplanets or crowded regions, and recorded at suitable (presumably universal) frequency windows like the waterhole.

    Search Google or Youtube for Seth Shostak on some SETI talks -- he also mentions how you can transfer a signal in a science fair project.

  16. Re:Because Scala, JRuby, Groovy, Clojure ... on Red Hat Uncloaks 'Java Killer': the Ceylon Project · · Score: 1

    I have an issue with people throwing away the excellent JVM just to use a new language.

    I hope they plan to build on or recycle the JVM -- so much effort has gone into making it portable, secure and reliable, why re-invent that.

  17. Re:Obvious on Are Graphical Calculators Pointless? · · Score: 1

    I remember that my colleague and I were being much better at calculus and integrals in school because we had TI-68 rather than TI-92 what the other kids had.

    Learning the stuff once by hand and then just using the calculator just doesn't cut it. You will always go for the calculator-shortcut and never thoroughly understand the concepts.

  18. lol@Exam [hint:joke] on Could You Pass Harvard's Entrance Exam From 1869? · · Score: 4, Funny

    Man, if the examiner had been smart he'd written page 3-4 in LaTeX and saved himself a lot of handwriting!!!!

  19. Re:Status Update: on US May Issue Terror Alerts On Facebook, Twitter · · Score: 4, Insightful

    The problem with terror alerts is that they are vague. Recently, the US had given out a terror alert for the EU. For the whole EU. That helps a lot. Additional text: The danger is real. Might be, but what is the alert useful for other than having a scared, paranoid population?

    The danger levels of the color-coded terror alert level will never go down to low. We are supposed to be always be afraid. But here is the flaw in the logic: The danger wasn't zero before 9/11. So can we have a "no elevated danger" level when the danger is at that background level and specific alerts otherwise.

    And please, someone give those people a link to Schneiers blog. I'm sure the specialists are aware of the security issues, but somewhere between them and the notifications there is a gap of knowledge and awareness.

  20. Re:Slashdot Effect on Facebook Opens Their Data Center Infrastructure · · Score: 1

    No, but slashdot has been facebooked https://www.facebook.com/slashdot

  21. Re:Terminology. on Is Science Just a Matter of Faith? · · Score: 1

    If you are interested on it, pick up any book on philosophy of science and you'll find just that, the difficulties involved, the limits of science and so on.

  22. Re:Oh, Sir. Branson on Richard Branson Announces Virgin Oceanic Submarine · · Score: 1

    There are a couple of good talks about ocean exploration on TED, for instance http://www.ted.com/talks/lang/eng/robert_ballard_on_exploring_the_oceans.html

  23. Re:lol wut on GNOME 3 Released · · Score: 2

    Yes you may never ever change the current paradigm! Evil!

    Seriously. If min/max buttons are what pisses you off, GNOME3 is a success.

    If you have ever used Mylyn for example, you will notice that some, more focussed UIs make you much more productive. I think it is good that the GNOME team tries to go down this road.

  24. Re:Correlation is not Causation on Requiring Algebra II In High School Gains Momentum · · Score: 1

    I remember not doing so hot in geometry

    And now you are on slashdot.

  25. Re:first April Fool post on Debian, OpenSUSE, Arch, Gentoo and Grml Merge · · Score: 1

    Not /., these projects are well-coordinated!