Slashdot Mirror


User: ajdecon

ajdecon's activity in the archive.

Stories
0
Comments
62
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 62

  1. Re:Making ethanol uses fossil fuels on Ethanol to Hydrogen Reactor Developed · · Score: 1

    Please tell me how you will drill your oil well, pump the oil out, process it and transport it to the plant where it will be used to make gasoline without using steam power...

    Inquiring minds want to know.

  2. More results exist on Why Microsoft Wants to Buy Google · · Score: 1

    While they don't make it obvious, the first 16 are "web directory" sites:

    Results 1-15 of about 16 containing "linux windows"
    WEB DIRECTORY SITES - ABOUT

    These are probably analagous to the Yahoo!Directory or ODP results. If you go to the next page, you get:

    Results 16-30 of about 8898833 containing "linux windows"
    WEB PAGES - ABOUT

    Of course, the categories are in little grey text smaller than the search results themselves...

  3. Re:Death of Ad-blockers? on Norton Antivirus 2004 Ad Blocking - Tough Call? · · Score: 1

    I'm not sure what Norton does, but some Ad-blockers download the ads and then simply refuse to display them. That's something the website probably couldn't detect, as it only relates to what the browser does.

  4. Ad blocking can be turned off... on Norton Antivirus 2004 Ad Blocking - Tough Call? · · Score: 1

    Or at least the version in Norton Personal Firewall 2003 can be, and presumably it can be in NAV2004. It does take a bit of effort to do so, and generally people don't enjoy looking at ads anyway. So why should they make the effort?

  5. Re:I'm particularly stuck by this one on Seven Rules For Spotting Bogus Science · · Score: 1
    6. The discoverer has worked in isolation.

    This rule still works, in general, even when applied to such "eureka" moments. The key separation between a true scientist's blinding insight and that of a pseudo-scientist is, what is their next action?

    Do they call up all their colleagues, excitedly asking for a second opinion and begging over the phone, "Do it yourself! Try it out! Does it work?" while trying to organize their data for a presentation or paper?

    Or do they call Fox News and CNN to organize a press conference while jealously guarding their data from all of "them" who are out to steal their discovery?

    If a scientist is working in "isolation", that does not mean he works alone: that means he refuses to share ideas, data and theories with his fellows, and shuns the peer-reviewed journals and traditional venues. Most of the "eureka moments" you mentioned, I would guess, were followed by an appeal to trusted colleagues for assistance; and even those scientists who were eager to be known as the discoverer only kept their secrets until their papers appeared, then shared data and arguments freely in order to prove their point.

  6. Dark energy on NASA: Evidence Favors Infinitely Expanding Universe · · Score: 3, Interesting

    NASA definitely will not announce that they had proven the existence of "dark energy"; all they can really announce is that data they collected suggests an infinitely expanding universe. (This would not, btw, require dark energy, though an accelerating universe might; all it would require would be for the total matter and energy in the universe to be below a certain threshold level.)

    I don't really know a whole lot about "dark energy" at this point... a few mentions here and there have given me a murky idea of it as similar to Einstein's cosmological constant, but nothing really definitive. Some recent evidence does, I believe, suggest an accelerating expansion which could lend credence to the theory... but I believe there have been alternative hypotheses advanced as well.

    I am not a physicist, however, merely a freshman physics major. ;-) I know the NASA announcement isn't out yet so primary sources on this particular experiment are hard to come by, but can anyone suggest some background or current research on dark energy and the cosmological constant? My only real source so far has been Scientific American--that is to say, I've got no reliable sources. [grimace]

    Much appreciated....

  7. Sure, it's interesting.... on 1985 Usenet About Y2k · · Score: 1

    But why the hell is this here?! This has been on Google's archive since I started using it, at least six months ago, and probably much longer.

    "News for nerds, stuff that matters" the sign says. But this isn't news, and it sure as hell doesn't matter....

  8. Re:I don't wanna go to Mars! on Homer Hickam Speaks Out For Fission Rockets · · Score: 1

    Then I hope you have a very happy, boring life in which every decision you make is the sensible one, no dreams exist, and nothing unexpected *ever* happens.

    It may not be practical currently, and the motivation so many mention (relieving overpopulation) *is* unrealistic. But economic reasons aren't everything, y'know. Scientific benefits, contributions to knowledge of working in space in general, all sorts of benefits that are not currently economical--and, IMHO, *never need be*. And anyway...

    Didn't you ever, in all your life, want to go somewhere just to *see*?

  9. And of course.... on No Red Hat-AOL Merger In The Works, Says CNET · · Score: 1

    A week or so from now, a story will either say that AOL *is* buying RH after all...or some similar rumor involving another huge corporation and another Linux company.
    Would this be called "copycat news"?

  10. Re:A few points to make... on Magnetic Space Launches · · Score: 1
    "Not likely, if we angle the vehicle at a 45-degree starting angle we drastically reduce the ammount of g-forces needed."

    I haven't worked out much of the math on this one, but I'd think you'd still have to accelerate at a fair g-force for an awful long way...many kilometers, most likely.

    Let's be optimistic here.... a 30 km track, and it goes straight out at 45 degrees instead of curving further upward. Do you really think it'd be feasible to build a 30 km track stretching out into the sky, with its end point at some 20 km in altitude?!

    No thank you, sir, I think I'll take the bus. This'd be a great way of getting cargo, etc. into orbit; the Shuttle can stop ferrying equipment up, and concentrate on moving people back and forth. But it's not a feasible tool for manned missions.

  11. How are you teaching your class? on Slashback: Banco, Warez, Fiction · · Score: 1

    You can't be doing very well with it. Please tell me this post is a joke. I've had bad math teachers before, but...

    Fist of all, a calculator is a tool of science and business. This does not mean it is a single-purpose device, or even that it should be a single-purpose device. The games are fun, and a good way to pass time when you're not in math class and the calculator is handy. If you programs the games yourself, even better!! You're probably getting more logical-thinking experience from programming than from most classes you have in high-school.

    Second, if you have problems with cheating and taking notes, you aren't teaching your class effectively. Sure, the calculators can store notes and such calculators as TI-89's allow a student to take shortcuts. So what? You aren't teaching facts, figures and formulas; you're teaching the method for arriving at the answers, and any decent math teacher will require that all work be shown. How else can you tell where a student went wrong in a problem, and draw his attention to the mistake and how to correct it?

    I am currently enrolled in my high school's AP Calculus class. My teacher allows the use of graphing claculators, allows full use of written and calculator notes on tests, and frequently gives us example problems for these notes. Then he gives us completely new problems on the tests, often with twists added to see if we learned the material. All work is shown, he marks students' mistakes on the papers, and hands them back in the next class period. Then we go over any questons we had problems with, work them out again, and do our best to insure mistakes aren't repeated.

    I find it hard to imagine a class with more free access to tools and information, and yet we learn the material. Why? Because he teaches us how to find answers on our own, then shows us exactly how we made our mistakes and what we could do better. This doesn't require restrictions on calculators or notes: all it requires is an active and helpful teacher.

  12. Re:It should be Linux... on Florida County Asks Students To Crack Elections · · Score: 1

    Open-source the software, sure; but for God's sake, not Linux!! I love Linux, but do you seriously think that voting machines should run a full, multi-purpose OS? A simple, single-purpose system would work perfectly for this; putting it together with Linux, FreeBSD, Windows or any such OS would make them vastly more complicated to put together, slower, and add more holes to exploit.