Well, aside from all of this discussion about ctrl-alt-del then enter (aka, shutdown), I may know a thing or two about the key sequence. It's not as unlikely that the keys will be pressed as they think. For example, in my high school CS class, they had a piece of software (that shall remain unnamed) to keep unwanted programs from running. We knew that there was a quick key sequence to temporarily disable it, but had no clue what it was. Then, one day, somebody was very tired and decided just to rest their head on the keyboard. Lo and behold, the computer unlocked. After that, we just had to figure out which keys he had pressed. Turns out the key combination was alt-shift-m. If you're ever on a windows computer that seems to have the default loader replaced with a special one (so that programs without permission to run can't get loaded into memory), try that key combo. Of course, since this was a cs class, they had to allow any programs that we wrote to run, so it really didn't do that much good once we were decent at programming (it's amazing what overwriting their binaries will do).
If you're interested in teaching computer science, as opposed to just using computers in teaching, I know UC Berkeley computer science department offers graduate level classes on this topic. Professor Clancy (http://buffy.eecs.berkeley.edu/~clancy), who taught my computer science class last semester specializes in teaching computer science and algorithms, and teaches many of the classes on teaching computer science. If you email him (clancy NO SPAM at cs dot berkeley dot edu minus NO SPAM), I'm sure he can give you more information on the topic. I hope you find this helpful.
Oh, by the way, he's aged a little bit since that picture on his web page, so his beard is a little longer, his hair a little grayer, and he has a racing-stripe in the middle of his beard.
Mozilla does in fact have a mode for this. If you look around in the preferences, there is something called a download manager. I believe this is exactly what you are looking for.
Actually, in KDE, there is an option when using the Konsole window to have a transparent background. While you can't actually see what's behind it, it does at least use the background of the current desktop as a background for the terminal. I'm sure this could easily be changed to a screen-shot of the current desktop contents. If you automagically generated this image with a script, you could probably set up Konsole to use this image as a background.
Apple is selling hardware that is half the speed at 2 to 4 times the price of Intel hardware.
It bothers me whenever somebody, especially on/. where people ought to know better, perpetuates the clock speed myth. Anybody who knows about hardware will tell you clockspeed doesn't really measure anything. I could make a 50 GHz chip that would perform 20 times worse than your old 80386 chips. If you want an accurate measure of CPU speed, look at things like FLOPS, IOPS, and memory bandwidth. Those three factors will tell you thousands of times more information than a clock speed.
I can understand where the people who post "let them struggle" are coming from. However, this doesn't do any good for those who are struggling. Sometimes, people just need a little help, then they can grasp a concept and take off with it. All of the CS classes at my university have a newsgroup associated with them. Students post questions and things they are struggling with to the newsgroup, and other students, TAs, and the professor try to answer the questions to the best of their ability. Sometimes, it points out to the professor something he/she inadequately covered. Also, those students who try to answer the questions (myself included) reinforce the material for themselves. I believe this was definetely one of the factors that helped me to be one of the top students in my CS class (and I'm not even a CS major).
I remember using this back in elementary school to make some quite impressive presentations. Those 10 year old presentations are still more impressive than the stuff powerpoint does.
Only 3 posts, and the site is already/.ed. I can barely load the page, and I'm using a 100Mb/s connection at work (no, that's not the network speed, that's the pipe). Google cache anybody?
As somebody who has built several tesla coils, I though I might be able to provide some information on this topic. A tesla coil is basically a high frequency transformer. They come in two varieties, traditional and solid state. A schematic for a traditional tesla coil can be found here. The main for a traditional tesla coil is usually a neon sign transformer, or NST as we call them. The capacitor is often a milspec jet engine ignition capacitor or a leyden jar made out of beer bottles. Solid state tesla coils are similar, except they use a less powerfull main transformer and use a flyback transformer (found on most tv's, although flyback's from the 50's and 60's work best, as they don't have as many safety devices) as the resonator. Just be forewarned, the information on the site I linked to is about 5 years out of date.
The average computer can crack a 128 bit RSA key in about a month. Of course, the average slashdoter's computer can break 128 bit key in about a week, and, in 1999, a beowulf cluster broke a 128 bit key in a matter of a few hours. Of course, with 1024 bit encryption, it is far easier just to stick a key stroke log onto somebody's computer, but, considering that in 1999 a beowulf cluster was able to brute force a 128 bit key in a matter of hours, it is probably possible to break a 1024 bit key in about a year these days (unless, of course, your the NSA, in which case, you can break it in a couple of days).
The C Programming Language, 2nd Edition, by Kernighan and Ritchie is, in my opinion, the best book ever written on the C language. Every C programmer I know has a copy of the book (and I'm not exaggerating). This book probably has the most information on a programming language packed into the least amount of space. The book is $40 new on Amazon or your other favorite major bookseller.
Well, they did design it to be female, and they admitted the team is almost exclusively males, so you can't be too far off. However, if you looked at the picture, GRACE is anything but what you would want to be doing that kind of activity with. She looks more like an oil drum with a monitor stuck on top of it than any female I know. Unless oil drums have become suddenly attractive to us males, I don't think what you're suggesting is going to happen.
As an emacs user, I feel obliged to point out that xemacs is available for windows, and works quite well. It runs natively under windows, so you don't need to deal with cygwin or any of that (unless you want to, they do have a cygwin version available). And if you're a vi person, you can always run emacs in vi mode.
I thought windows was the only operating system that crashed all of the time and needed to be restarted. Maybe they should have gone with something more tried and true, like *nix, rather than writing their own custom code. Rebooting the computer while flying a fighter jet sounds awfully foolish to me. What happens if the computer crashes durring combat.
Actually, the way the cable system works in most parts of the united states, there is only 1 cable provider in any given area. They are guaranteed a monopoly in the area they service. If you want a different cable company, you better start looking for a new place to live. While DSL is not quite as much of a monopoly, all the lines still end up going through a comon provider.
If you sign an md5 checksum of your code with a private key(this is what code-signing is), you can easily write software that will only install the program if the cryptographically signed checksum sent along with the program matches the md5 of the program when decrypted. In fact, I'm working on a project that uses this very method right now. Of course, this relies on the private key being well protected. In general, the private key should always be on a computer disconnected from all networks. This way, the program has to be manually signed, and can't just be signed by a machine (or a hacker). As long as the client side software is secure, and the private key is kept off the network on the server side, there should not be any problems.
Actually, it's not the size of the capacitor that really matters. I own several capacitors that are over 6 inches in diameter, and they are far from my most powerfull. In fact, the capacitors in camera flashes are more powerfull. You can even get capacitors the size of garbage cans (they're about 3 feet high and 2 feet across). My friend and I we're concidering buying one just for the shock factor (no pun intended). However, the most powerfull capacitor I have seen is actually no biger around than a quarter and about 1 cm high. It's capacitance... 1 Farad (a massive amount if you know anything about capacitors, maybe it's time for better units, see prev article).
Check this car out. This guy ripped out his existing stereo and replaced it with a touchscreen display for a pc he has in his trunk. The computer runs linux and has a wireless network card so he can download data off of his LAN before he leaves. He even set it up with a chip to boot up the pc when the ignition is turned and wait to turn on the monitor until the software is loaded. And, of course, it's all GPL'ed.
If the RIAA/MPAA hears about this, we're doomed. Not only will they accuse people of "stealing" copyleft material. It's free, as in beer, you can't steal it. This is what P2P was meant for. Let's hope that this takes off.
How can a study claim to be scientific without conducting any actual research. The scientific process is dependent on research and conducting studies. Even theoretical physics is just that--theoretical--until somebody determines something based on the theory that is experimentally verified. If these people claim to have anything more than an abstract social theory, they are fools. Science without facts is not science.
Hmm, sounds vaguely familiar. It seems like this might actually work. It wouldn't require much intervention on the part of the P2P host, so would avoid many of the issues with other moderation schemes.
It would be possible to require a header file with an md5 checksum of the file, which could be verified against an archive, but this would require an archive, which would definitely be subject to anything the RIAA could dish out. Plus, it would mean that if even something like varying bitrates would cause problems. It's far simpler to simply let people filter out misleading content by hand. It involves far less intervention on the part of the P2P provider, thus making the P2P network that much less succeptible to the RIAA's attacks.
A kleinbottle is a 2d surface that cannot be represented in less than 4 dimensions without self-intersecting. It is basically a torrus, except that the tube goes through itself in 3d. A diagram of how to make one is:
|-->--| ^' '' '^ |--<--|
Just line up the arrows and connect. For more information, check out mathworld.com.
Actually, apple does provide support, and microsoft already has the code to be able to support this, they just refuse to release it or allow other people to implement it (the israeli government offered to pay for implementing it, but microsoft refused). You should read the article before commenting on it.
Slashdot Mirror
Well, aside from all of this discussion about ctrl-alt-del then enter (aka, shutdown), I may know a thing or two about the key sequence. It's not as unlikely that the keys will be pressed as they think. For example, in my high school CS class, they had a piece of software (that shall remain unnamed) to keep unwanted programs from running. We knew that there was a quick key sequence to temporarily disable it, but had no clue what it was. Then, one day, somebody was very tired and decided just to rest their head on the keyboard. Lo and behold, the computer unlocked. After that, we just had to figure out which keys he had pressed. Turns out the key combination was alt-shift-m. If you're ever on a windows computer that seems to have the default loader replaced with a special one (so that programs without permission to run can't get loaded into memory), try that key combo. Of course, since this was a cs class, they had to allow any programs that we wrote to run, so it really didn't do that much good once we were decent at programming (it's amazing what overwriting their binaries will do).
If you're interested in teaching computer science, as opposed to just using computers in teaching, I know UC Berkeley computer science department offers graduate level classes on this topic. Professor Clancy (http://buffy.eecs.berkeley.edu/~clancy), who taught my computer science class last semester specializes in teaching computer science and algorithms, and teaches many of the classes on teaching computer science. If you email him (clancy NO SPAM at cs dot berkeley dot edu minus NO SPAM), I'm sure he can give you more information on the topic. I hope you find this helpful.
Oh, by the way, he's aged a little bit since that picture on his web page, so his beard is a little longer, his hair a little grayer, and he has a racing-stripe in the middle of his beard.
Mozilla does in fact have a mode for this. If you look around in the preferences, there is something called a download manager. I believe this is exactly what you are looking for.
Actually, in KDE, there is an option when using the Konsole window to have a transparent background. While you can't actually see what's behind it, it does at least use the background of the current desktop as a background for the terminal. I'm sure this could easily be changed to a screen-shot of the current desktop contents. If you automagically generated this image with a script, you could probably set up Konsole to use this image as a background.
Apple is selling hardware that is half the speed at 2 to 4 times the price of Intel hardware.
/. where people ought to know better, perpetuates the clock speed myth. Anybody who knows about hardware will tell you clockspeed doesn't really measure anything. I could make a 50 GHz chip that would perform 20 times worse than your old 80386 chips. If you want an accurate measure of CPU speed, look at things like FLOPS, IOPS, and memory bandwidth. Those three factors will tell you thousands of times more information than a clock speed.
It bothers me whenever somebody, especially on
I can understand where the people who post "let them struggle" are coming from. However, this doesn't do any good for those who are struggling. Sometimes, people just need a little help, then they can grasp a concept and take off with it. All of the CS classes at my university have a newsgroup associated with them. Students post questions and things they are struggling with to the newsgroup, and other students, TAs, and the professor try to answer the questions to the best of their ability. Sometimes, it points out to the professor something he/she inadequately covered. Also, those students who try to answer the questions (myself included) reinforce the material for themselves. I believe this was definetely one of the factors that helped me to be one of the top students in my CS class (and I'm not even a CS major).
Here is a link to the apple site on hypercard.
Hypercard is basically a way to make slideshow like presentations and animations.
I remember using this back in elementary school to make some quite impressive presentations. Those 10 year old presentations are still more impressive than the stuff powerpoint does.
Need I say more. Howabout TP (third post)?
Only 3 posts, and the site is already /.ed. I can barely load the page, and I'm using a 100Mb/s connection at work (no, that's not the network speed, that's the pipe). Google cache anybody?
As somebody who has built several tesla coils, I though I might be able to provide some information on this topic. A tesla coil is basically a high frequency transformer. They come in two varieties, traditional and solid state. A schematic for a traditional tesla coil can be found here. The main for a traditional tesla coil is usually a neon sign transformer, or NST as we call them. The capacitor is often a milspec jet engine ignition capacitor or a leyden jar made out of beer bottles. Solid state tesla coils are similar, except they use a less powerfull main transformer and use a flyback transformer (found on most tv's, although flyback's from the 50's and 60's work best, as they don't have as many safety devices) as the resonator. Just be forewarned, the information on the site I linked to is about 5 years out of date.
The average computer can crack a 128 bit RSA key in about a month. Of course, the average slashdoter's computer can break 128 bit key in about a week, and, in 1999, a beowulf cluster broke a 128 bit key in a matter of a few hours. Of course, with 1024 bit encryption, it is far easier just to stick a key stroke log onto somebody's computer, but, considering that in 1999 a beowulf cluster was able to brute force a 128 bit key in a matter of hours, it is probably possible to break a 1024 bit key in about a year these days (unless, of course, your the NSA, in which case, you can break it in a couple of days).
The C Programming Language, 2nd Edition, by Kernighan and Ritchie is, in my opinion, the best book ever written on the C language. Every C programmer I know has a copy of the book (and I'm not exaggerating). This book probably has the most information on a programming language packed into the least amount of space. The book is $40 new on Amazon or your other favorite major bookseller.
Well, they did design it to be female, and they admitted the team is almost exclusively males, so you can't be too far off. However, if you looked at the picture, GRACE is anything but what you would want to be doing that kind of activity with. She looks more like an oil drum with a monitor stuck on top of it than any female I know. Unless oil drums have become suddenly attractive to us males, I don't think what you're suggesting is going to happen.
As an emacs user, I feel obliged to point out that xemacs is available for windows, and works quite well. It runs natively under windows, so you don't need to deal with cygwin or any of that (unless you want to, they do have a cygwin version available). And if you're a vi person, you can always run emacs in vi mode.
I thought windows was the only operating system that crashed all of the time and needed to be restarted. Maybe they should have gone with something more tried and true, like *nix, rather than writing their own custom code. Rebooting the computer while flying a fighter jet sounds awfully foolish to me. What happens if the computer crashes durring combat.
Actually, the way the cable system works in most parts of the united states, there is only 1 cable provider in any given area. They are guaranteed a monopoly in the area they service. If you want a different cable company, you better start looking for a new place to live. While DSL is not quite as much of a monopoly, all the lines still end up going through a comon provider.
If you sign an md5 checksum of your code with a private key(this is what code-signing is), you can easily write software that will only install the program if the cryptographically signed checksum sent along with the program matches the md5 of the program when decrypted. In fact, I'm working on a project that uses this very method right now. Of course, this relies on the private key being well protected. In general, the private key should always be on a computer disconnected from all networks. This way, the program has to be manually signed, and can't just be signed by a machine (or a hacker). As long as the client side software is secure, and the private key is kept off the network on the server side, there should not be any problems.
Actually, it's not the size of the capacitor that really matters. I own several capacitors that are over 6 inches in diameter, and they are far from my most powerfull. In fact, the capacitors in camera flashes are more powerfull. You can even get capacitors the size of garbage cans (they're about 3 feet high and 2 feet across). My friend and I we're concidering buying one just for the shock factor (no pun intended). However, the most powerfull capacitor I have seen is actually no biger around than a quarter and about 1 cm high. It's capacitance ... 1 Farad (a massive amount if you know anything about capacitors, maybe it's time for better units, see prev article).
Check this car out. This guy ripped out his existing stereo and replaced it with a touchscreen display for a pc he has in his trunk. The computer runs linux and has a wireless network card so he can download data off of his LAN before he leaves. He even set it up with a chip to boot up the pc when the ignition is turned and wait to turn on the monitor until the software is loaded. And, of course, it's all GPL'ed.
If the RIAA/MPAA hears about this, we're doomed. Not only will they accuse people of "stealing" copyleft material. It's free, as in beer, you can't steal it. This is what P2P was meant for. Let's hope that this takes off.
How can a study claim to be scientific without conducting any actual research. The scientific process is dependent on research and conducting studies. Even theoretical physics is just that--theoretical--until somebody determines something based on the theory that is experimentally verified. If these people claim to have anything more than an abstract social theory, they are fools. Science without facts is not science.
Hmm, sounds vaguely familiar. It seems like this might actually work. It wouldn't require much intervention on the part of the P2P host, so would avoid many of the issues with other moderation schemes.
It would be possible to require a header file with an md5 checksum of the file, which could be verified against an archive, but this would require an archive, which would definitely be subject to anything the RIAA could dish out. Plus, it would mean that if even something like varying bitrates would cause problems. It's far simpler to simply let people filter out misleading content by hand. It involves far less intervention on the part of the P2P provider, thus making the P2P network that much less succeptible to the RIAA's attacks.
A kleinbottle is a 2d surface that cannot be represented in less than 4 dimensions without self-intersecting. It is basically a torrus, except that the tube goes through itself in 3d. A diagram of how to make one is:
|-->--|
^' '' '^
|--<--|
Just line up the arrows and connect. For more information, check out mathworld.com.
Actually, apple does provide support, and microsoft already has the code to be able to support this, they just refuse to release it or allow other people to implement it (the israeli government offered to pay for implementing it, but microsoft refused). You should read the article before commenting on it.
.sig, what's that?