My, someone has their feathers in a ruffle. Considering, for me, that'd be a very unwise attitude to take.
But if you really want to debate this: Most of my fellow Christians are "Christians of convenience." That is, they only go to church services around Christmas, Easter, or when they stole some old lady's social security check, when it seems proper and convenient. I guess a little is better than none, however, many pastors are fond of misguidedly instructing their flock about evolution. They themselves don't understand what they are talking about and they spread the misinformation. TOA is the best place to get answers about what current mainstream evolution theory actually has to say about all the things which might be said in an anti-evolution sermon.
I'm not anti-Christian, I'm anti-anti-intellectual. It embarrasses us all when some pastor declares to his congregation that even Charles Darwin recanted evolution theory on his deathbed, or that all the genes of the eye must evolve before any of them are useful.
I think the whole problem here is the way the guy is carrying out his campaign. He has a legitimate issue, but he is taking things out of turn. He could have started with a very apologetic pleading like "I'm very sorry this happened, and I know it usually takes two weeks, but I believe this site is important for public education, particularly at this time of year, could you please re-index my site?" You know, try and ply them with a little sugar.
Instead he explodes with a "OMGosh, Google is dishonest, you guys won't communicate with us, why are you haters!" Well, okay, that's not a direct quote, but...
He has a legitimate axe to grind, he is just doing it in the wrong order. Get the site re-indexed FIRST, then start a debate about the methods used. Doing both at the same time colors the debate as a whine fest, which I am positive is not intended. (I read TOA all the time, good stuff in there)
The set of complex sine functions forms a basis for expressing any arbitrary continuous signal, triangle waves are not such a basis.
That may be correct, I really don't have the time to go through the analysis on this one. The formal proof I was working on started out something along the lines of: since you can create a triangle out of a sine wave, it should be possible to create a series of other triangles with mutually destructive coefficients such that the convergence of all triangles is a single sinusoidal harmonic left standing. Something along the lines of if W1 has harmonic coefficients { n0, n1, n2,...} and W2 has coefficients { 0, -n1, -n2,...} then the sume is a single standing sine wave. The trick was to generalize the form of a triangle in the complex sine domain. Then I could look for a series which converges to a sine wave. But I'm just not that interested.
A sine wave by definition consists of a single frequency component. A triangle wave by definition consists of an infinite series of frequency components, one at each integer multiple of the fundamental.
Your definition is in a complex-sine frequency domain. The sampling in this case, as with all cases, is done in the time domain. Your components are time and amplitude. Thus you can create triangle waveforms without having to have an infinite number of sine wave generators on hand.
And a sine wave can be expressed as the sum of triangle waves, all of which would be well above the sampling rate. You're getting caught up in the fourier transformation of the data and missing the data itself. This is important because the CD does not encode frequency/amplitude data like the mp3 does, the CD contains temporal/amplitude data. Thus the CD can approximate a triangular wave, which would give the mp3 encoder a headache.
The confusion here is that a signal CAN be expressed as an infinite sum of overlapping sinusoidal signals. This does not mean that a signal IS an infinite sum of overlapping sinusoidal signals. There are an infinite number of overlapping waveform types we can use to represent a signal, sinusoidal is simply the most convenient.
> Are you sure that a 22.05KHz sine wave isn't made up of triangular frequencies much higher than 22.05KHz?
Quite sure.
So are you saying there does not exist an isomorphic transformation from a sine wave to a triangle wave. Be careful how you answer that, it may destroy your argument. You should also stop posting anonymously if you seriously want to debate the mathematics behind this.
I'm gonna jump out on a limb and guess that zipped files, mp3's and MPEG/Movie files comprise a significant fraction of all data transferred on the net and have a high entropy.
A 44.1Khz sampling rate perfectly records a 22.05Khz signal
NO IT DOESN'T. What the hell kind of selective reading are you doing here? Read the wikipedia article. Sampling without aliasing is not a perfect recording. Don't believe me? Draw two signals: a 22.05KHz sine wave and a 22.05KHz triangle wave. Now draw the result of Nyquist-Shannon sampling them both. Can you honestly say that's a perfect recording?
How does a 17 year old come by deuterium? I mean the bush administration has a fit when Iran tries to buy some, and in this country you don't even have to be 18 to get it?
I graduated with double majors in Mathematics and Computer Science, a minor statistics and more than my fair share of Physics/Chem/Bio classes.
If you want to be able to work on Game Engines and truly have the math background to implement something realistic, ignore much of what these other guys are saying, you need a lot more math. You will need:
* Single variable differential and integral calculus * Vector calculus / multivariate calculus * Differential Equations (this and previous two are critical for physics) * Linear Algebra (critical for manipulating 3D worlds and projecting them onto a 2D plane) * Number theory (this will really only help if you're doing security, like say on a multiplayer game) * Numerical Analysis (this is where you learn what it means to have a computer approximate continuous analytical functions) * Abstract Algebra (this is a seriously whacked course, but it gives you a fuller understanding of what all that handwaving crap was about in Linear Algebra) * Real Analysis / Advanced Calculus (this is also kind-of a whacked course, but if you really want to do a physics engine, you'll need the level of calculusthat comes from this course to fully understand it) * Complex Analysis (this is the course where you'll understand fourier analysis, and you'll be competent enough with complex numbers to understand quaternions. Quaternions are important in 3D games to avoid the phenomena of gimbal lock that you get when just doing euler angles in 3D matrices)
Take all those, and you'll have the tools to tackle any game engine. You'll also have a degree in mathematics.
I don't know that any of those were the artwork in question... but there you go. I know they're all from the same contributor, but art.ubuntu.com is really slow right now... for some reason... hmmmm...
Heaven forbid we blame the scalpers... or the people willing to buy a PS3 at a premium from the scalpers. Why would we do that when there is a giant corporation we can blame for the ills of society? Damn that holiday season, we are helpless against the dynamic duo: Christmas and Sony. Won't somebody think of the children (especially those who will be deprived of a PS3 this christmas?)
I can't agree with this article more. Since moving from film to digital SLRs my photography has really grown because shooting digital blows away all of the risk and gives you much more creative freedom when it comes to experimental exposures such as low light photography, action photography and more.
Ummm, yes, that's really nice. Except that is not what the article is about. The article is comparing digital SLR cameras to digital point-n-shoot cameras.
# A government deficit is a surplus to the private sector (read: you and me). When we (the public) buy treasury securities, it increases our net worth. # The private sector is much more effective at investing this surplus into generating economic growth than the government is, provided the right infrastructure is in place.
Okay, but what if the majority of the treasury bonds is not being purchased by U.S. nationals, but rather by foreign governments/corporations/individuals? All of the interest then paid on the bond is a drain on our economy, right?
Okay, I realize now you are just a troll, but just in case anybody else reads this and thinks there is an ounce of credibility to your argument...
A filesystem specifies how data is physically laid out on the drive. It does not specify the software interface to access that data. You cannot change the physical layout of the data without developing a complicated piece of conversion software to migrate data from one format to another.
An API is the software interface to access the data. You can change the API to access the data with a simple file copy and updating a few memory references.
Once you have created filesystems in a format, you are stuck with it. It does not matter if the specification for that filesystem is public or private. You will have to maintain backwards compatibility.
All we are asking is that microsoft release that specification - BECAUSE IT CANNOT CHANGE.
You don't specify where you live, but several very large corporations will hire highly motivated, well qualified high school students for internships. For example Intel will offer summer internships to high school students local to one of their major US campuses (Portland, OR; Santa Clara, CA; Chandler, AZ; Folsom, CA; etc.) If you are not local to a tech giant, you will have to beat the pavement and beg a smaller employer.
When I was about your age I wrote an animation program in assembly on my Amiga 500 and showed it at my local Amiga User's Group. This got me noticed by several people who mentored me and got me a job. What stood out then and will stand out now is: can you dig through the documentation and figure it out yourself? You'd be amazed how many professionals there are out there who need substantial hand holding on any new technology. Self-learners are worth their weight in $100 bills. You want to be one of those.
Here's a good self-learner exercise: When I wanted to learn python, I went to an irc Python channel and found The Python Challenge. It is a series of puzzles to solve by writing python programs to figure out the clue to get you to the next puzzle/web page. This worked very well because the puzzles were small enough that you get that "Yes! I did it!" rush every few hours. Don't be afraid to go to the forums for spoilers.
Did you notice the link in my post went to the folks hosting ntfs-3g? Did you read the part where they themselves refer to the driver as beta? I imagine not, since you didn't read the link in the first place. Do you know what it takes for a kernel driver to migrate out of "experimental" and in to the main line?
1) How does someone unfamiliar with hard disk geometry and logical partitions manage to get an ext3 partition on their drive which has already been 100% allocated by NTFS? Will google re-partition my drive? I'm pretty savvy with partitions and even I had to buy partition magic to dual boot on a laptop because Windows XP just "coincidentally" put an unmoveable system file a couple MB from the end of the NTFS partition... again, just "coincidentally." I'm not implying at all that maybe it was done to prevent parted from resizing my NTFS partition so I could dual boot without 3rd party commercial software.
Slashdot Mirror
No, actually, I read his thread on google groups about it. Did you?
I don't think his intention is to whine, but it certainly comes off that way.
My, someone has their feathers in a ruffle. Considering, for me, that'd be a very unwise attitude to take.
But if you really want to debate this: Most of my fellow Christians are "Christians of convenience." That is, they only go to church services around Christmas, Easter, or when they stole some old lady's social security check, when it seems proper and convenient. I guess a little is better than none, however, many pastors are fond of misguidedly instructing their flock about evolution. They themselves don't understand what they are talking about and they spread the misinformation. TOA is the best place to get answers about what current mainstream evolution theory actually has to say about all the things which might be said in an anti-evolution sermon.
I'm not anti-Christian, I'm anti-anti-intellectual. It embarrasses us all when some pastor declares to his congregation that even Charles Darwin recanted evolution theory on his deathbed, or that all the genes of the eye must evolve before any of them are useful.
I think the whole problem here is the way the guy is carrying out his campaign. He has a legitimate issue, but he is taking things out of turn. He could have started with a very apologetic pleading like "I'm very sorry this happened, and I know it usually takes two weeks, but I believe this site is important for public education, particularly at this time of year, could you please re-index my site?" You know, try and ply them with a little sugar.
Instead he explodes with a "OMGosh, Google is dishonest, you guys won't communicate with us, why are you haters!" Well, okay, that's not a direct quote, but...
He has a legitimate axe to grind, he is just doing it in the wrong order. Get the site re-indexed FIRST, then start a debate about the methods used. Doing both at the same time colors the debate as a whine fest, which I am positive is not intended. (I read TOA all the time, good stuff in there)
The set of complex sine functions forms a basis for expressing any arbitrary continuous signal, triangle waves are not such a basis.
...} and W2 has coefficients { 0, -n1, -n2, ...} then the sume is a single standing sine wave. The trick was to generalize the form of a triangle in the complex sine domain. Then I could look for a series which converges to a sine wave. But I'm just not that interested.
That may be correct, I really don't have the time to go through the analysis on this one. The formal proof I was working on started out something along the lines of: since you can create a triangle out of a sine wave, it should be possible to create a series of other triangles with mutually destructive coefficients such that the convergence of all triangles is a single sinusoidal harmonic left standing. Something along the lines of if W1 has harmonic coefficients { n0, n1, n2,
A sine wave by definition consists of a single frequency component. A triangle wave by definition consists of an infinite series of frequency components, one at each integer multiple of the fundamental.
Your definition is in a complex-sine frequency domain. The sampling in this case, as with all cases, is done in the time domain. Your components are time and amplitude. Thus you can create triangle waveforms without having to have an infinite number of sine wave generators on hand.
And a sine wave can be expressed as the sum of triangle waves, all of which would be well above the sampling rate. You're getting caught up in the fourier transformation of the data and missing the data itself. This is important because the CD does not encode frequency/amplitude data like the mp3 does, the CD contains temporal/amplitude data. Thus the CD can approximate a triangular wave, which would give the mp3 encoder a headache.
The confusion here is that a signal CAN be expressed as an infinite sum of overlapping sinusoidal signals. This does not mean that a signal IS an infinite sum of overlapping sinusoidal signals. There are an infinite number of overlapping waveform types we can use to represent a signal, sinusoidal is simply the most convenient.
> Are you sure that a 22.05KHz sine wave isn't made up of triangular frequencies much higher than 22.05KHz?
Quite sure.
So are you saying there does not exist an isomorphic transformation from a sine wave to a triangle wave. Be careful how you answer that, it may destroy your argument. You should also stop posting anonymously if you seriously want to debate the mathematics behind this.
I'm gonna jump out on a limb and guess that zipped files, mp3's and MPEG/Movie files comprise a significant fraction of all data transferred on the net and have a high entropy.
Are you sure that a 22.05KHz sine wave isn't made up of triangular frequencies much higher than 22.05KHz?
The Nyquist rate is the minimum sampling rate required to avoid aliasing when sampling a continuous signal.
I think you changed the problem.
Here's what a lot of people don't get: it's possible to compress data without discarding any of it.
*eye roll*
It's possible to compress data without discarding any of it provided its entropy is sufficiently low in some domain.
A 44.1Khz sampling rate perfectly records a 22.05Khz signal
NO IT DOESN'T. What the hell kind of selective reading are you doing here? Read the wikipedia article. Sampling without aliasing is not a perfect recording. Don't believe me? Draw two signals: a 22.05KHz sine wave and a 22.05KHz triangle wave. Now draw the result of Nyquist-Shannon sampling them both. Can you honestly say that's a perfect recording?
Won't you think of Young Sebastion before starting another internet meme?!
Okay, you do some electrolysis and now you have a container that has 99.985% hydrogen-1 and 0.015% deuterium. Now how do you get that deuterium?
The old fashioned way is a series of super-centrifuges. Does he happen to have a gas super-centrifuge?
How does a 17 year old come by deuterium? I mean the bush administration has a fit when Iran tries to buy some, and in this country you don't even have to be 18 to get it?
I'm lost.
I graduated with double majors in Mathematics and Computer Science, a minor statistics and more than my fair share of Physics/Chem/Bio classes.
If you want to be able to work on Game Engines and truly have the math background to implement something realistic, ignore much of what these other guys are saying, you need a lot more math. You will need:
* Single variable differential and integral calculus
* Vector calculus / multivariate calculus
* Differential Equations (this and previous two are critical for physics)
* Linear Algebra (critical for manipulating 3D worlds and projecting them onto a 2D plane)
* Number theory (this will really only help if you're doing security, like say on a multiplayer game)
* Numerical Analysis (this is where you learn what it means to have a computer approximate continuous analytical functions)
* Abstract Algebra (this is a seriously whacked course, but it gives you a fuller understanding of what all that handwaving crap was about in Linear Algebra)
* Real Analysis / Advanced Calculus (this is also kind-of a whacked course, but if you really want to do a physics engine, you'll need the level of calculusthat comes from this course to fully understand it)
* Complex Analysis (this is the course where you'll understand fourier analysis, and you'll be competent enough with complex numbers to understand quaternions. Quaternions are important in 3D games to avoid the phenomena of gimbal lock that you get when just doing euler angles in 3D matrices)
Take all those, and you'll have the tools to tackle any game engine. You'll also have a degree in mathematics.
How about this or this or maybe even this
I don't know that any of those were the artwork in question... but there you go. I know they're all from the same contributor, but art.ubuntu.com is really slow right now... for some reason... hmmmm...
Congratulations, Sony. Nicely done.
Heaven forbid we blame the scalpers... or the people willing to buy a PS3 at a premium from the scalpers. Why would we do that when there is a giant corporation we can blame for the ills of society? Damn that holiday season, we are helpless against the dynamic duo: Christmas and Sony. Won't somebody think of the children (especially those who will be deprived of a PS3 this christmas?)
I can't agree with this article more. Since moving from film to digital SLRs my photography has really grown because shooting digital blows away all of the risk and gives you much more creative freedom when it comes to experimental exposures such as low light photography, action photography and more.
Ummm, yes, that's really nice. Except that is not what the article is about. The article is comparing digital SLR cameras to digital point-n-shoot cameras.
# A government deficit is a surplus to the private sector (read: you and me). When we (the public) buy treasury securities, it increases our net worth.
# The private sector is much more effective at investing this surplus into generating economic growth than the government is, provided the right infrastructure is in place.
Okay, but what if the majority of the treasury bonds is not being purchased by U.S. nationals, but rather by foreign governments/corporations/individuals? All of the interest then paid on the bond is a drain on our economy, right?
Actually he was sentenced to 100 hours of community service, but the ballots were cast using Diebold voting machines.
Okay, I realize now you are just a troll, but just in case anybody else reads this and thinks there is an ounce of credibility to your argument...
A filesystem specifies how data is physically laid out on the drive. It does not specify the software interface to access that data. You cannot change the physical layout of the data without developing a complicated piece of conversion software to migrate data from one format to another.
An API is the software interface to access the data. You can change the API to access the data with a simple file copy and updating a few memory references.
Once you have created filesystems in a format, you are stuck with it. It does not matter if the specification for that filesystem is public or private. You will have to maintain backwards compatibility.
All we are asking is that microsoft release that specification - BECAUSE IT CANNOT CHANGE.
You don't specify where you live, but several very large corporations will hire highly motivated, well qualified high school students for internships. For example Intel will offer summer internships to high school students local to one of their major US campuses (Portland, OR; Santa Clara, CA; Chandler, AZ; Folsom, CA; etc.) If you are not local to a tech giant, you will have to beat the pavement and beg a smaller employer.
When I was about your age I wrote an animation program in assembly on my Amiga 500 and showed it at my local Amiga User's Group. This got me noticed by several people who mentored me and got me a job. What stood out then and will stand out now is: can you dig through the documentation and figure it out yourself? You'd be amazed how many professionals there are out there who need substantial hand holding on any new technology. Self-learners are worth their weight in $100 bills. You want to be one of those.
Here's a good self-learner exercise: When I wanted to learn python, I went to an irc Python channel and found The Python Challenge. It is a series of puzzles to solve by writing python programs to figure out the clue to get you to the next puzzle/web page. This worked very well because the puzzles were small enough that you get that "Yes! I did it!" rush every few hours. Don't be afraid to go to the forums for spoilers.
Can't you even afford to pay attention?
Did you notice the link in my post went to the folks hosting ntfs-3g?
Did you read the part where they themselves refer to the driver as beta? I imagine not, since you didn't read the link in the first place.
Do you know what it takes for a kernel driver to migrate out of "experimental" and in to the main line?
Two problems:
1) How does someone unfamiliar with hard disk geometry and logical partitions manage to get an ext3 partition on their drive which has already been 100% allocated by NTFS? Will google re-partition my drive? I'm pretty savvy with partitions and even I had to buy partition magic to dual boot on a laptop because Windows XP just "coincidentally" put an unmoveable system file a couple MB from the end of the NTFS partition... again, just "coincidentally." I'm not implying at all that maybe it was done to prevent parted from resizing my NTFS partition so I could dual boot without 3rd party commercial software.
2) What if I use reiserfs?
Now that's just Crazy Talk.
We aren't talking about an API. Please stick to the subject.