Search found 1055 matches

by Meteorswarm
Thu Apr 14, 2011 5:00 am UTC
Forum: Computer Science
Topic: Runtime
Replies: 11
Views: 2212

Re: Runtime

A simple example is the " subset sum " problem - that is, given a list of numbers (eg {1, 2, 5, 7}), can you find a subset that sums to a specific target value (eg 10)? For this example, the answer is "yes", as the subset {1,2,7} adds up to 10. This is a not-so-good example beca...
by Meteorswarm
Thu Apr 14, 2011 4:32 am UTC
Forum: Science
Topic: Alternative biochemistries and supercritical fluids
Replies: 7
Views: 1257

Re: Alternative biochemistries and supercritical fluids

The main supercritical fluid I can think of is CO2, but it doesn't have the polarity that water has - and that polarity is what makes it a good solvent for life because it can dissolve lots of interesting things. Could be possible, though.
by Meteorswarm
Mon Apr 11, 2011 4:42 am UTC
Forum: The Help Desk
Topic: Dynamic IP address?
Replies: 6
Views: 1126

Re: Dynamic IP address?

Also, the "lease" on a dynamic IP address usually isn't released unless your modem powers down, so you probably keep it for as long as your power stays on.
by Meteorswarm
Thu Apr 07, 2011 7:40 pm UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

I wrote "without supply or maintenance trips from earth". That gives a hint I was thinking of a habitat in space. Nobody is saying that it would be easy. Stop harping on the weight issue - everybody acknowledges it. Our point is that it is a matter of expense, and not a matter of possibil...
by Meteorswarm
Thu Apr 07, 2011 4:59 am UTC
Forum: Language/Linguistics
Topic: Overmorrow
Replies: 61
Views: 16442

Re: Overmorrow

A noble project, and one that I support.

Well, overmorrow. It's even better for procrastination!
by Meteorswarm
Tue Apr 05, 2011 3:18 pm UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

How much funding was recommended for CELSS (Closed Ecological Life Support Systems) in the most recent decadal survey? Moreover, what would be the mass of this life support system? Would a 130 tonne to LEO launch system be adequate to lift humans and life support system to LEO along with an Earth D...
by Meteorswarm
Tue Apr 05, 2011 4:02 am UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

An asteroid light lag will be much more than 3 seconds, so teleoperation will be more difficult. Delivering humans to an asteroid service will require life support that reliably runs trouble free for months or years at a time, something beyond our present state of the art. I'm not sure it's so far ...
by Meteorswarm
Mon Apr 04, 2011 12:37 pm UTC
Forum: Science
Topic: Most efficient way to approach a red traffic light.
Replies: 16
Views: 2991

Re: Most efficient way to approach a red traffic light.

There's more on this here, where the objective function was kinetic energy, rather than velocity.

Unfortunately, that thread was affected by my previous incarnation's death in the spam war of 2009, so it's missing all the posts from me.
by Meteorswarm
Mon Apr 04, 2011 3:03 am UTC
Forum: The Help Desk
Topic: laptop dying
Replies: 2
Views: 495

Re: laptop dying

Thermal problems can cause very odd symptoms, particularly if it's a component other than the CPU which is overheating, and they often don't have thermometers installed :/
by Meteorswarm
Thu Mar 31, 2011 1:14 am UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

Earth Moon Langrange 1 (EML1 for short) is the L region between the earth and moon. Specifically, it's the Earth-Moon system's first of the five Lagrange points, which is directly between the Earth and Moon, and is not stable. L2 is on the far side of the moon, L3 on the far side of the Earth (all ...
by Meteorswarm
Wed Mar 30, 2011 1:24 am UTC
Forum: Language/Linguistics
Topic: 請你說一點兒中文!(Chinese Practice)
Replies: 149
Views: 461021

Re: 請你說一點兒中文!(Chinese Practice)

『話』 (I would use 漢語, but if you've only been studying briefly, it might not be so good) For a few weeks, you're not doing badly. I'm not a native speaker either, but this is year 10 (gods, has it been that long?), so I'm moderately close to being ok. Please excuse my traditional characters. Tips! (...
by Meteorswarm
Mon Mar 28, 2011 2:13 am UTC
Forum: Hardware
Topic: Linux Netbook Review Request
Replies: 3
Views: 1214

Re: Linux Netbook Review Request

I'm planning to use this for note taking, web browsing and coding, but the coding can be done remotely (although the server I use to ssh to is also running an atom...). I had an eee1000 before, but it broke, melted and then got stolen :/ I'd rather not buy a Windows laptop on principle. I haven't bo...
by Meteorswarm
Mon Mar 28, 2011 1:30 am UTC
Forum: Hardware
Topic: Linux Netbook Review Request
Replies: 3
Views: 1214

Linux Netbook Review Request

I'm going to buy a netbook, and put Ubuntu netbook remix (or maybe just vanilla ubuntu, if I don't like the new UNR) on it. I've found three options that don't come with Windows, listed below. I've configured them to my liking, and listed the configured price: Zareason's Teo Pro , $527. Pros: good w...
by Meteorswarm
Thu Mar 24, 2011 2:33 pm UTC
Forum: General
Topic: Boy Thread: put a hat on ur butt
Replies: 14355
Views: 1403098

Re: Boy Thread: All Roads Got Back

I found this on the interwebs (well, #xkcd-signal) and had to report back here.
Image
by Meteorswarm
Thu Mar 24, 2011 7:56 am UTC
Forum: Hardware
Topic: <?> How to make an external drive last longer
Replies: 7
Views: 2075

Re: <?> How to make an external drive last longer

I see. Yeah I asked because someone told me that putting a switch on it will not only save power (which I suppose it does, not that much though right?) and keeps the wear and tear lower. A watt for a year costs something like $1.50 (based on New Jersean electricity prices); a hard drive draws betwe...
by Meteorswarm
Thu Mar 24, 2011 7:17 am UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 150091

Re: public misconceptions

Some people can see a little further in the UV than most, just through receptor mutations. Usually women afaik You're thinking probably of tetrachromacy which is apparently unverified but possible in humans. Two of the three pigment genes lie on the X-chromosome, and if a woman has two different ge...
by Meteorswarm
Wed Mar 23, 2011 3:58 am UTC
Forum: General
Topic: Boy Thread: put a hat on ur butt
Replies: 14355
Views: 1403098

Re: Boy Thread: All Roads Got Back

Cider is superior to beer. Given how horrible beer is, that's hardly a statement of quality. I used to hate beer too. Then I had some delicious microbrew (Lefthand Sawtooth to be exact) and my whole world changed. I could homebrew cider in addition to beer. I just have to wait until I have more spa...
by Meteorswarm
Tue Mar 22, 2011 8:21 pm UTC
Forum: General
Topic: Boy Thread: put a hat on ur butt
Replies: 14355
Views: 1403098

Re: Boy Thread: All Roads Got Back

My family actually got broadband years ago because my grandmother was about to get it, and we couldn't let her get it before we did.
by Meteorswarm
Tue Mar 22, 2011 7:43 am UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 150091

Re: public misconceptions

Link wrote:
TheChewanater wrote:I hate how commercials claim that Vitamin E "strengthens cell walls".

The plant-people, they're invading!

Actually, that reminds of a certain Doctor Who episode.


Hey, now, they could be fungi.
by Meteorswarm
Mon Mar 21, 2011 5:25 pm UTC
Forum: Language/Linguistics
Topic: 請你說一點兒中文!(Chinese Practice)
Replies: 149
Views: 461021

Re: 請你說一點兒中文!(Chinese Practice)

comet wrote:[話]


謝謝。我還是一個漢語學生,我在美國的康乃爾大學學漢語,所以,已經“taken my studies to an academic level”對不對?

可惜,明年沒有中文課因爲康乃爾大學唯有四年漢語課(我在高中學了四年漢語,所以來康大時不必上一年級的課)。我怕明年會完全記不住我這幾年學到的知識。怎麼辦呢?

我上個週末開始讀《紅樓夢》,沒想到有那麼多生詞!我的小詞典沒有好幾個。不過我還讀得動很多,覺得很高興。
by Meteorswarm
Mon Mar 21, 2011 4:54 pm UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

On the other hand, it's probably pretty hard to do. Food is quite chemically complex, and most of the biomolecules and their feedstocks we use come from either living sources directly or are petrochemicals Using micro algae to produce the basic molecules we need is not very difficult. Once you have...
by Meteorswarm
Thu Mar 17, 2011 1:33 pm UTC
Forum: Science
Topic: RNA primer during DNA replication
Replies: 13
Views: 4212

Re: RNA primer during DNA replication

Ugh, did I get it backwards again? This always happens :(
by Meteorswarm
Thu Mar 17, 2011 6:11 am UTC
Forum: Science
Topic: RNA primer during DNA replication
Replies: 13
Views: 4212

Re: RNA primer during DNA replication

Nucleotides are synthesized 3' to 5' 5' to 3', and read the strand they're copying 5' to 3' 3' to 5', which affects your answer. To my knowledge, which is limited, primers in this context don't make sense. What I know of as primers are short, pre-synthesized (how?) sequences of RNA t...
by Meteorswarm
Wed Mar 16, 2011 12:42 am UTC
Forum: Science
Topic: The Science of Hot Air Blowers
Replies: 39
Views: 5030

Re: The Science of Hot Air Blowers

Also licking wounds is generally a bad idea. This is not generally true for people with healthy immune systems. While there have been cases of serious infection from wound licking, it is a natural response to injury, and saliva contains antiseptic compounds . It may actually be beneficial to lick w...
by Meteorswarm
Sat Mar 12, 2011 5:48 am UTC
Forum: Fictional Science
Topic: Economics of time travel
Replies: 60
Views: 20885

Re: Economics of time travel

HungryHobo wrote:I suspect that if it were easy to go into deep freeze or on a long voyage then the return on long term investments would simply go down as people would be more willing to invest in them.


Why? The money's still just as useful to the borrower.
by Meteorswarm
Sat Mar 12, 2011 1:44 am UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 150091

Re: public misconceptions

For comparison, the LHC (which has similarly vague applications to quality of life), cost something on the order of ten billion to build and is one of the largest scientific installations on the planet and will provide huge amounts of data for years - on just over half of NASAs annual budget. Yet, ...
by Meteorswarm
Sat Mar 12, 2011 1:40 am UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

Or, we could synthesize food, based on known molecular arrangements found in tasty plants. We could combine chemicals in such a way as to make the same thing as a tomato or something, without actually growing tomatoes. Or would that take even more power? You're suggesting a chemical process that co...
by Meteorswarm
Fri Mar 11, 2011 8:30 pm UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

Just a simple thought: There are some plants that can grow in less than 2 weeks on Earth. It might not be very tasty, but we could probably survive on phytoplankton. You're probably right, but I think that for quality of life reasons, we want to be growing real food for any sort of extended stay in...
by Meteorswarm
Thu Mar 10, 2011 6:10 pm UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

(Apologies for the mega-post, I'm not arguing, but trying to clarify myself and provide some facts. Also note that my perspectives are from a low-level cellular / biochemical point of view and may ignore higher-order effects.) So a factor of 20 is way off. The factor of 20 was saying we'd actually o...
by Meteorswarm
Thu Mar 10, 2011 5:46 am UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

Go back to the original 100 klm/m^2 estimate, drop it to 5000 lm/m^2 of red LED illumination (factor of 20, emitting the equivalent of a 10% chunk from the red part of the spectrum, and also compensating for the eye's reduced sensitivity to red...couldn't find emitted power for these LEDs), times 1...
by Meteorswarm
Thu Mar 10, 2011 5:23 am UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

I wonder if the light received by a greenhouse on the top of a lunar mountain, where the sun effectively rotates around the horizon, would be sufficient to grow plants. Why wouldn't it be? It's not like there's any atmosphere to dim the light coming from near the horizon. It might be gathered somew...
by Meteorswarm
Thu Mar 10, 2011 4:26 am UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

Also, 'high efficiency red LEDs' are only useful for plants at the end of a growing cycle; flowering plants require blue light. You can't get away with only pumping partial spectrum in your greenhouses. What? That's not true at all! The photosynthetic sites of plants absorb a wide range of frequenc...
by Meteorswarm
Sun Mar 06, 2011 6:19 pm UTC
Forum: Science
Topic: Why not colonize Ceres?
Replies: 228
Views: 41812

Re: Why not colonize Ceres?

I want to see a Lunar based version of the James Webb Telescope only 100 times bigger and decked out for full spectrum analysis. To be sure, the putting a telescope on the dark side of the moon is pretty much it's only pro. Abrasive dust constantly being thrown up by tiny impactors and electrostati...
by Meteorswarm
Fri Mar 04, 2011 1:47 pm UTC
Forum: Science
Topic: Would an anti-matter donut have more calories?
Replies: 16
Views: 2418

Re: Would an anti-matter donut have more calories?

If you look at an antimatter doughnut in the mirror, you can get a CP-symmetry violation. It turns out that Circular Pastry symmetry is not a fundamental property of our universe. Although in everyday experience with macroscopic pastries, circularity is always symmetric, this does not hold at the q...
by Meteorswarm
Fri Mar 04, 2011 7:21 am UTC
Forum: Science
Topic: If modern weapons didn't exist, what would combat look like?
Replies: 95
Views: 6831

Re: If modern weapons didn't exist, what would combat look l

I gather alot of their steel came from "iron sands", I'm not sure of the implications of that, but probably relevant if it indicates certain contaminants. They could in fact make hard, high-carbon steel, I imagine layering was more to do with their inability to make a single steel or stee...
by Meteorswarm
Thu Feb 24, 2011 12:00 am UTC
Forum: Religious Wars
Topic: Is Java is a bad language for beginners?
Replies: 234
Views: 132754

Re: Is Java is a bad language for beginners?

I'm pretty ambivalent about the TRUEBASIC that I learned. I got loops and ifs and variables from it, and those are pretty useful, but it also lacked some pretty key stuff, like variable scope. Also, there was this function MATREDIM that claimed to resize a matrix, but I think it just said "yeah...
by Meteorswarm
Wed Feb 23, 2011 3:40 am UTC
Forum: Language/Linguistics
Topic: astrology/astronomy and similar pairs
Replies: 19
Views: 4508

Re: astrology/astronomy and similar pairs

physiology/physiognomy !
by Meteorswarm
Wed Feb 23, 2011 3:38 am UTC
Forum: Hardware
Topic: Windows Virtual Memory
Replies: 23
Views: 2466

Re: Windows Virtual Memory

The immediate loss of performance was probably because I added the swapfile after the computer had been running for a few weeks. There was enough memory pressure at the time that Linux decided to swap something out almost immediately, but since it hadn't been tracking memory usage patterns, it made...
by Meteorswarm
Fri Feb 18, 2011 8:26 pm UTC
Forum: Hardware
Topic: [Making] Building a Glowing Bat
Replies: 3
Views: 798

Re: [Making] Building a Glowing Bat

What kind of rope light should I be looking for? The electronics vendors' websites seem to be full of fugly and are hard to search (at least the ones I've visited)
by Meteorswarm
Fri Feb 18, 2011 4:10 am UTC
Forum: Religious Wars
Topic: Is Java is a bad language for beginners?
Replies: 234
Views: 132754

Re: Is Java is a bad language for beginners?

While OOP is useful for dealing with complexity, this is EXACTLY what beginners DON'T need to deal with. Why make new programmers deal with objects and inheritance when they still need to learn the basics? And unlike some other languages that have objects, Java FORCES you to use them. You can't have...

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