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 | | Re: Gallery speed
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| Kevin Loch wrote in message ... (...) 24 (...) Might be quicker to do it in 2 stages, first the line above without the DISTINCT into a cursor, then do a SELECT DISTINCT from that. SELECT file_parent FROM files ORDER BY file_modify_time DESC into (...) (23 years ago, 6-Jul-01, to lugnet.off-topic.geek)
| | | | | Re: Gallery speed
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| (...) One speed-up would be to store the modify date/time of each folder (updated when a file is added / updated / deleted) and then query directly against the folders. It also depends on your back-end query optimiser - even if you're only selecting (...) (23 years ago, 5-Jul-01, to lugnet.off-topic.geek)
| | | | | Gallery speed
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| I think I've fixed the painfully slow performance of the "recent" page. There were some indexes missing in the database that really should have been there. It loads reasonably fast now (~.8 seconds unless the machine is really busy). If there are (...) (23 years ago, 5-Jul-01, to lugnet.general, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) As regard the math, I wouldn't know where to start, but surely even if the moon we're sitting on the earths surface the earth would still exert more force than the moon so you wouldn't be weightless. I don't know if you mean't, at the point (...) (23 years ago, 4-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| I should probably try to solve the problem myself, it'll help as prep for my college entrance exam. ;-) (...) Hmm, not bad at all - that gives people time enough to *realize* it's happening, broadcast it all over the world, and let everyone go (...) (23 years ago, 3-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Actually, when calculating the acceleration and taking the distance into account, it's not so bad. For my first attempt at solving this, I tried converting gravitational potential energy into kinetic energy. The resulting integral was (...) (23 years ago, 3-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Umm... It's not a poke. honest. Your value for the Earth-moon distance is off by a factor of ten. which means your answer should be 2.25ish days. And... The force of the moon's gravity doesn't really enter into this. We know Force = (...) (23 years ago, 3-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Calculus, yet another form of mathematics that I am unable to do in my life. Jesse Long (23 years ago, 3-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Then it should be 2:26. Assuming that the relative acceleration between the Earth and the Moon is the sum of their local accelerations due to gravity. And assuming that acceleration is directly proportional to the force of gravity. Ie, when (...) (23 years ago, 3-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) That'd be dy/dx = 2x. (I knew that calculus'd come in handy one day!) ROSCO (23 years ago, 3-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I get 1 hour, 13 minutes. Or 2 hours, 26 minutes. If I could remember the derivitive of y = x^2, I'd be more precise. Steve (23 years ago, 2-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I have two questions to ask now because of the replies to this bulletin board message I sent in response to many other messages on the Lugnet Space bulletin board room. The first question is for Kyle D. Jackson and Jeff Jardine and it is if we (...) (23 years ago, 2-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I understand now in my mind that atoms are what makes the structure of all living organisms and the structure of all living organisms depends on the density and class of materials in the constructuion of space craft. It is obbvious to me that (...) (23 years ago, 2-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I never spotted this before, but it's further proof that there's negligible friction in space. If there was, the Moon would have slowed down in it's orbit and fallen to Earth, and the Earth would slow down and fall into the sun. Actually, I (...) (23 years ago, 2-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I didn't necessarily mean in space. I was just talking about liquids in general (on Earth, in an atmosphere). Clearly if you're trying to push your way through something, a gas is easier than a liquid, which is easier than a solid. But, this (...) (23 years ago, 2-Jul-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Laws of aerodynamics (aero*dynamics*) are nothing but Newtonian physics. The whole governing equation of aerodynamics, the famous Navier-Stokes equation, is just a different representation of our well known F=ma. By the way, is it a miracle (...) (23 years ago, 4-Aug-00, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Holy cow, it's that long?! Man, cool or not, forget that..., too long! Call me when the moon's an hour away. Now *that* would look cool, if it was the first time you'd looked up in a few days. Plus, the apparent gravity on the earth's surface (...) (23 years ago, 29-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) What material would serve the best purpose for cooling off directly in space and would this material work in space to prevent the plasma that powers my space craft from overheating and making my space craft explode into a million pieces? Jesse (...) (23 years ago, 29-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) You said in the last letter before this letter that some liquids (referring to the reaction to friction of certain particles in outer space) are viscious while some solids are very hard and smooth in reaction to friction in outer space. If (...) (23 years ago, 29-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Thank you for the demonstration about the vehicle and the turning into a curve, George. I finally grasp that concept in my mind. However, liquids, if you boil them, changes materials from liquids to gases, just to let you know, George. :.) (...) (23 years ago, 29-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I get 3.5 days, ignoring the motion of the earth toward the moon. Don't worry about the cookie - LUGNET provides free cookies for us all. :) Jeff J (23 years ago, 29-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Well, it's more about the angle the wing is inclined to the airflow. Just keep it tilted upward to the air flowing past you, keep your speed up, and you should get some lift. Newton says you're deflecting air downwards. Aerodynamics says a lot (...) (23 years ago, 29-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| Narf! You're welcome. "Jesse Alan Long" <joyous4god2@yahoo.com> wrote in message news:GFnI8o.KF4@lugnet.com... -snip- (...) some fun, (...) (Perry (...) that is (...) even if (23 years ago, 29-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I guess it would be based on the surface material properties. Different materials have different thermal emissivities, so picking one with a high value would be better for cooling directly to space. Of course these materials may be impossible (...) (23 years ago, 28-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| In lugnet.space, Jesse Alan Long writes: much clipped (...) Orbit is a balance between a spacecraft's velocity and the downward pull of gravity. The vehicle's velocity pulls it outward, like centrifugal force in a car turning a corner, and gravity (...) (23 years ago, 28-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) I was only having some fun with the oil part of the letter, I knew that you probably did not use oil in outer space, I mean, after all, the general consensus in outer space would reflect that you would use environmentally friendly materials (...) (23 years ago, 28-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: RGB color values for many brick colors
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| The original Pantone pallette I used had CMYK values, I translated them via Photoshop for your convience. I assumed in web development (like the colors use on the BricWorx color selector) and most non-print graphic design are done in RGB. SteveB (23 years ago, 27-Jun-01, to lugnet.publish, lugnet.trains, lugnet.faq, lugnet.off-topic.geek, lugnet.cad)
| | | | | Re: RGB color values for many brick colors
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| (...) HSL and HSV are both valid models, IIRC I think they are close but not the same. I forget the difference. I think Luminance (and the entire RGB model too) is more useful or applicable for things that do color by giving off light, like monitors (...) (23 years ago, 27-Jun-01, to lugnet.publish, lugnet.trains, lugnet.faq, lugnet.off-topic.geek, lugnet.cad)
| | | | | Re: RGB color values for many brick colors
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| (...) CMYK is Cyan, Magenta, Yellow, and Black (subtractive color model vs RGB additive color model). CMY gives you a muddled gray/brown so K is added for pure black. Go to (URL) then option 2b, Color Theory for a nice presentation on the topic. I (...) (23 years ago, 27-Jun-01, to lugnet.publish, lugnet.trains, lugnet.faq, lugnet.off-topic.geek, lugnet.cad)
| | | | | Re: RGB color values for many brick colors
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| (...) I'm assuming "CMYK" translates to something along the lines of Blue,Red,Yellow,Black? Or more appropriately "Cyan","Magenta","Yellow",K? (what the heck would K be?) If you had the CMYK values, could these be mathematically translated into (...) (23 years ago, 27-Jun-01, to lugnet.publish, lugnet.trains, lugnet.faq, lugnet.off-topic.geek, lugnet.cad)
| | | | | Re: RGB color values for many brick colors
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| (...) ought to do that sampling on their own?? I was at an ink manufacturer recently and they can take colors in either RGB or CMYK but prefer the latter. (they also have spectrophotometers that you can just put things under and get ink recipes from (...) (23 years ago, 27-Jun-01, to lugnet.publish, lugnet.trains, lugnet.faq, lugnet.off-topic.geek, lugnet.cad)
| | | | | Re: RGB color values for many brick colors
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| Here's a different type, one for print colors (CMYK). To read those color values, use something like Photoshop to sample inside framed boxes. some of these may be considered official, as well as the naming scheme. (...) (23 years ago, 27-Jun-01, to lugnet.publish, lugnet.trains, lugnet.faq, lugnet.off-topic.geek)
| | | | | Re: RGB color values for many brick colors
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| (...) Tres useful! Ought to be widely crossposted! (seems like FAQ material, almost) ++Lar (23 years ago, 27-Jun-01, to lugnet.trains, lugnet.publish, lugnet.faq, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) And I thought I'd drifted off the subject... :-) I don't know of any form of reciprocating or rotating engine that could propel you through space, so engine oil seems a bit pointless. As for overheating, the only way to disperse heat in space (...) (23 years ago, 27-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: UML +/-
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| (...) Understandable. Actually, I *didn't* get the impression that you didn't like UML; I just got the impression that its uses weren't fully, well, useful to you. <shameless plug> My dad's methodology, while not directly opposing UML, challanges (...) (23 years ago, 27-Jun-01, to lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) The first problem I have, Jason, is that I am not sure that everyone else is right, either on these bulletin boards and I know for a fact that I am not probably right in my ways of thought in my life. Would an overheated engine become a (...) (23 years ago, 26-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: UML +/-
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| In lugnet.off-topic.geek, Larry Pieniazek writes: <snip> Rereading that it sounds like I don't like/approve of UML. That would be incorrect. That it has been adopted as a standard instead of several rival notations and methodologies is a *huge( win (...) (23 years ago, 26-Jun-01, to lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Yes, but the point is you'd roll by 90° to turn, not just bank a little bit. Jason J Railton (23 years ago, 26-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) Well the A-wing flight control system doesn't discriminate between air and space flight either so it's control surfaces move in space as well, producing little affect except a little momentum. I think as a Valkyrie has 2 widely spaced engines (...) (23 years ago, 26-Jun-01, to lugnet.space, lugnet.off-topic.geek)
| | | | | Re: Couldn't resist
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| (...) You're not seen as evil. It's just that if you're unsure of what you're saying, don't try to make out that it's absoulutely right, and people won't mind if your opinion differs from theirs. (...) Just to add to this, possibly blurring the (...) (23 years ago, 26-Jun-01, to lugnet.space, lugnet.off-topic.geek)
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