Slashdot Mirror


User: Mandelbrute

Mandelbrute's activity in the archive.

Stories
0
Comments
440
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 440

  1. Re:Almost essential for ACT elections! on Debian GNU/Linux Used in Electronic Voting Trials · · Score: 1

    True - without compulsory voting you get the best government that money can buy.

  2. Absentee votes and postal votes on Debian GNU/Linux Used in Electronic Voting Trials · · Score: 1

    If you can't vote on voting day then you vote beforehand and post it. If you are in another region then you can do an absentee vote.

    If you are dead then other people may vote for you - although those days are supposed to be over.

  3. How much would "FLCL" have to be cut to be shown? on Cowboy Bebop on TV This Fall · · Score: 1

    Or "Ranma" when it comes down to it. Lots of nudity with no sex and lots of violence with no-one really getting hurt (like road runner), but they would still be cut. There would probably be no coherant story left, and it's difficult to work out what's going on as it is.

  4. Depth charged a wreck? on Monitor's Engine Raised From Atlantic · · Score: 1

    I thought Ron Hubbard had his epic battle vs the ocean floor off the west coast?

    With U-boat activity and the mysterious (at the time) sinking of the "Liberty" ships in the Atalantic due to poor design, I'm not surpised that big magnetic things on the sea floor were depth charged in WWII.

  5. Re:laser printing on 3D MAX To Laser Light · · Score: 1

    'd rather see 3DSMax do laser 3D printing. The real name escapes me, but a laser beam is fired into a vat of photosensitive resin, where it hardens, and can create a perfect 3D mold. Anyone recall? Wired said Oakley uses this technology. Stereolithography Here's a commercial site that explains a few of the concepts and has a few pics. http://www.stereolithography.com/ There are a few machines around, there may be one at a university near you.

  6. Another reason to have better writers in Hollywood on NASA Sends One Up; DoD Shoots One Down · · Score: 1
    It's interesting for those of you who have seen Real Genius how closely our Missle Defense System will follow the course of the movie. It is almost a theft of the plot.
    Thank God they didn't base it on "Armageddon". Next up - governments implement internet security based on "The Net" and "Swordfish".
  7. Re:Has anyone done a comparison? on AMD Athlon Multi-Processor Under Linux · · Score: 1
    Doh!
    1. The BH6 ... BP6
    Just consider it a typo, you know the board I mean, the dual processor one.
    2. There never was a PII 600 ...
    True, (pity, it would be cheap by now) but that's about the speed the two celeron combination runs at for doing stuff like encoding mp3's running four copies of the encoding program at once. For other stuff relative speed varies all over the place. Mosts apps run on only one processor, but if X takes one and a 3D graphic intensive game takes the other then you are ahead of a uniprocessor system of the same clockspeed. Whether I put faster chips in the thing or get a new uniprocessor motherboard and CPU will come down to price/performence, which is currently skewed towards AMD chips in a big way.
  8. Re:Has anyone done a comparison? on AMD Athlon Multi-Processor Under Linux · · Score: 1

    True, but at the time they came out there were no 1GHz x86 chips around, and a couple of celeron 300A's (effectively rebadged PII 450's) on a BH6 was immensely cheaper than a PII 600 uniprocessor system. Now high end processors are a lot cheaper, so it comes down to how you actually run stuff on the box as to whether a dual is worth it - is it really worth shelling out the extra $$ to be able to still run other stuff when netscape goes wierd and grabs all of one CPU?

  9. Auckland Electricity Blackout on Lego Vs. Meccano & Engineering Knowledge · · Score: 1

    How many weeks was it?

  10. They let him patent this? on Optical Feedback For Perfect Coffee · · Score: 1

    There's a well known technique for measuring turbidity (how much suspended stuff is in liquids) by putting a beam of light through a liquid that has been around for decades. Beverage plants that have used this for quality control for years will have issues with a patents like this that:
    1/ Get a patent for applying old technology to a very specific situation
    2/ Apply as broad a brush as possible to encompass things that are already in use

    Here's something already in use for quality control of beverages by this technique:
    http://www.kerncoinstr.com/watqmet.htm

  11. Not again!!!!! on Ports System As A Strategy Against .NET? · · Score: 2

    Yes - Gnu/open group/AT&T/Xerox/Motorola/Trolltech/......../Alan Cox/Linus/Linux, or perhaps just Linux-PPC.

    The linux kernel was developed with the use of gnu tools, but the "gnu" prefix to linux is a recent thing and not added by a developer of linux anyway.

    I'd better get back to work using GNU/NT4 (the cygwin tools are the most commonly used user programs on this machine).

  12. Re:Eating aluminum? on CD-Eating Fungus Among Us · · Score: 1
    I doubt the interest of the fungus is to eat the aluminum on the CD
    What else is it going to find to eat on a CD? The fungus doesn't get to move about, it only grows where there is a food source. Bacteria that eat iron have been known about for decades, (they cause acidic runoff from mine tailings) but this is something new.
  13. Polite and informative reply to troll on Draconian Censorship Push In South Australia · · Score: 1

    >How is crime after citizens gave up guns About the same. Big semi-automatic weapons were fairly rare here before the gun laws, and sawn off shotguns (the weapon of choice in armed holdups) have always been illegal here. Used syringes are used in holdups too. Guns have never been a really big deal here. No one's attempted to hit our heads of state with anything more than an egg since Federation.

  14. Re:Handwriting recognition on PDA Giant Sharp Promises Linux-Running PDAs · · Score: 1

    I was playing with an iPac running linux & embedded Qt the other day and it could recognise most of my writing. Using a dash running from right to left as backspace erased the mistakes.

    A mobile phone style text input also worked very well on the beast.

  15. Re:Modulus of elasticity? Minimum stress to crack? on Self-Healing Composites · · Score: 1

    I'm really answering a lot of posts here, but bbqdeath wrote:
    >But while I know some materials have a level of stress below which they can deform and reform without permanent damage (in
    >metal bicycle tubing, and probably more generally, one measurement of this is the "modulus of elasticity")

    What you are thinking of is the "yeild stress", but elasticity is important too - that's how much a material will flex.

    The advantage with this technology is that once microscopic cracks form, the capsules burst and the material will be reglued in that microscopic area. The next crack will probably be somewhere else - once again on a microscopic scale. You won't see large amounts of glue leak out of a cracked mobile phone casing, it's likely that you won't see the crack at all. How is that useful? Every crack starts off as a small crack. A crack glued with a weak glue, or even a crack with a blunted tip, is significantly better than an open crack in any sort of stressed situation. The stress at a crack tip is a lot higher than the stress anywhere else, and as the crack cuts down the amount of material left that can take a load, the stress gets higher again. Eventually you reach a point where it is easier for the crack to grow than stay put, and it grows at a speed close to that of the speed of sound in the material, until it breaks through to the other side (eg. a 50km+ long welded oil pipe in Alaska in the '60s, with a crack moving at about 6km/s).

    In many situations strength is not the issue but toughness. Toughness is resistance to damage - copper is tough and glass isn't, hit both with a hammer and the glass will crack, even though it is the stronger material. With the material mentioned in the article the aim is to increase the toughness by sealing the cracks. If you expect single big impacts capable of producing large cracks then you would use something else, but if you are dealing with occasional loads and bumps that will cause minor damage, then this would be a useful material. This would increase the life of a part that is likely to fail by "fatigue". In many situations, reducing the strength slightly may have no effect, and in those situations where it will you may just have to pack in a bit more carbon fibre to offset the weaker glue capsules.

    Ultimately, things break in different ways, so a strong material or a thicker piece of material isn't always the way to go. If you have a thin walled steam boiler, it may crack and leak steam, if you replace it with a thick walled steam boiler, it will crack and explode like a bomb under the same conditions. If you can find or stop the cracks in time then you can deal with it.

    One example of a ceramic which is toughened by closing the micro-cracks after they form is "Partially Stablised Zirconia" or PSZ (sorry, no URL, use google). It doesn't use glue, it uses a sudden crystal structure change.