Actually, it was pretty common for celebrity a few thousand years ago to insist the "authorized biography" included: - virgin birth - a star - a prophecy - relation to a god
Examples are: -Rome's founder, Romulus, was the Son of the God Mars, and Rea Sivia, a mortal Vestal virgin -Alexander the Great (conceived a thunderbolt from Zeus) (Today we just use electricity on the cell) -emperor Augustus (son of God Apollo, conceived by a holy-snake) -Minerva was the daughter of Jupiter not by sexual union -daughter of the river Sangarius, they say, took of the fruit and laid it in her bosom, when it at once disappeared, but she was with child. A boy was born, and exposed, but was tended by a he-goat. [Pausanias, Description of Greece 7.17.9-11] -Jesus
Unbroken DRM: paper trail at the voting booth
on
The DRM Scorecard
·
· Score: 1
A voting machine with a paper trail. I am saying this jokingly as a challenge to all the complain about media under DRM, and that are challenging all efforts to use electronic voting, insisting that the only reliable "DRM" is a paper trail.
Is that rally the only option? Any CS with a better "DRM" for a voting machine than a paper trail?
Actually, No, I think they may have spent more time presenting the idea to politicians eager to look green than actually solving the issue, as is stated in TFA: "..requiring further technological development to realize"
The instability discussed, however is not really Newtons third law.
Stability may be a big problem here.
on
Floating Wind Turbines
·
· Score: 2, Interesting
At 5MW, the wind will push on the rotor with a force up to 500kN or 50 tonnes and 50MNm of torque
This is both a huge bending moment and dragging force.
To keep the mill from leaning more than 45 degrees backwards, it will need hundreds of tonnes of ballast,
With the windmill leaning backwards, the blade on one side will see a higher load than the blade on the other side, and the whole windmill will see a torque of maybe 10 MNm along the vertical axis.
How they plan to keep this stable is a mystery to me, and TFA does nothing to suggest a solution.
Anybody working for Hydro here on/. that care to comment?
12. IP adresses of computers on the internet is not unique. A home user typically have one IP address, and typically have a network and a wireless network with multiple computers, including, unknowingly, possibly a neighbors PC as well as a laptop in a car parked in the street outside. All behind the NAT router.
All these computers typically share 1 IP address behind the NAT router.
IP addresses are changed on the fly, and it may be hard to document who had which at what time while maintaining evidence standards. (example: how is time zone set?, is daylight saving time settings etc documented?, how is Mediasentry's clock synchronized relative to the ISP and to real time?)
12,13,14. IP addresses can be spoofed, and protocols such as the 'Onion router' will make it appear as someone else's IP address. This is just a click away in many P2P interfaces.
15. There is no way to determine that these songs are "Illegal copies" or the users legal property. 15. There is no record that the songs available for download was actually downloaded.
Also, an IP network is exactly the opposite of a phone network: there are two kinds of networks: Switched networks, and circuit networks. The phone network is of the latter type, and the internet is of the other. The only (somewhat) unique device number in a TCP/IP network is the Ethernet MAC address, and that is not even part of the routed package.
I do not know why you try to ridicule my points. Not very constructive. When converting a movie shot on my camcorder to mpeg4 H.264 I observe this: 1.8GHz: 7 hours 2.6GHz: 3 hours
Compile time for a project is 1.8GHz: 30 minutes 2.6GHz: 12 minutes
Not that the improvement is more than you would expect, as the pc is busy with other things as well during these tasks, with the extreme example below:
A SW driver for an 802.11g radio uses 90% of the CPU at 1.8GHz, and only 50% at 2.6GHz. The performance difference for other applications therefore are 5x better (500%) on 2.6GHz.
If you only use e-mail, you should probably get a 1GHz or less single core system, an not worry about performance at all.
Of course people overclock. instead of buying the 2.6GHz Core 2 Duo, you just buy the 1.8GHz version and pay half the money ($160 insted of $320).
Now just overclock it back up to 2.6GHz.
You may want to do a little 2 corner testing (Voltage and Temp), just to make sure you are within stable regime.
As long as you dont overvoltage the chip, there is really no reason not to max out the clock rate. As soon as the CPU idles, it underclocks automatically anyway, so you get the boost only when you need it.
If you do any home video decoding, the difference is huge.
To make the point clear: You can burn out a power transistor if you run it too hard, but this is not possible on a CPU. It will hang long before it even gets close to be damaged. If the chip overheats and/or is driven at a too high clock, it just hangs. Reset and cool, and it is good as new.
I wonder where he got his math education. It is fairly simple to show that there exists a mapping between the results on a multiple choice test and "actual knowledge" K=T+|e|, where |e| is the statistical error, accounting for guessing statistically. Subtracting for wrong answers etc. is just "psychology". The statistical uncertainty "e" can easily be reduced below any significant value with more choices and more questions.
The example the author shows maximized the statistical uncertainty of guessing, and is not relevant. To illustrate the point: take the 100 question true/false test. A) If you give 1 point for correct and no point for wrong, the student will score from S0=50 (randomness) to S0=100 (perfect). Now calculate a new score S= 2*S0-100, and you have results from 0 to 100 (round anything less than 0 to 0. B) Announce you will subtract 1 point for each wrong. Now you will get scores from T0=0 to T0=100, and your map is just T=T0.
I don't really care. Many of my friends have 500GB external SATA drives full of all music and movies ever made.
at 3Gb/s, it copies in minutes. Sure beats any download.
We could even call it a library, and make sure only the number of copies that are owned are used at any one time, and it all is fair use.
You could even put up a WiFi AP on your roof, and share with your neighborhood. 108Mb/s actually gives 57Mb/s, but that is still 20 HD quality broadcasts for *each* wifi channel.
I don't understand anything of what you are saying. Can you be more specific, and maybe give me the energy eigenstates of the time independent Schrödinger equation of this system?
Creationism must be one of the lease troublesome aspects of christianity. The bible is a list of events that can only be considered insane: Water becomes wine, Virgins have babies, Apples have knowledge, oceans go dry, and the end of the world has been near for almost 2000 years now.
Saying you are a christian that believes in evolution is like saying your beliefsystem is only 99.99% screwed up.
Slashdot Mirror
Usually "The Science of Bridge Collapse Prevention" is called "The Science of Bridge Construction"
Actually, it was pretty common for celebrity a few thousand years ago to insist the "authorized biography" included:
- virgin birth
- a star
- a prophecy
- relation to a god
Examples are:
-Rome's founder, Romulus, was the Son of the God Mars, and Rea Sivia, a mortal Vestal virgin
-Alexander the Great (conceived a thunderbolt from Zeus) (Today we just use electricity on the cell)
-emperor Augustus (son of God Apollo, conceived by a holy-snake)
-Minerva was the daughter of Jupiter not by sexual union
-daughter of the river Sangarius, they say, took of the fruit and laid it in her bosom, when it at once disappeared, but she was with child. A boy was born, and exposed, but was tended by a he-goat. [Pausanias, Description of Greece 7.17.9-11]
-Jesus
A voting machine with a paper trail. I am saying this jokingly as a challenge to all the complain about media under DRM, and that are challenging all efforts to use electronic voting, insisting that the only reliable "DRM" is a paper trail.
Is that rally the only option? Any CS with a better "DRM" for a voting machine than a paper trail?
I am impressed how international the Chinese police is. Local Chinese search warrants now issued in English and pdf format.
Mao must be proud
35 GPa refers to elastic modulus, not tensile strength.
Carbon fiber for example has an elastic modulus of 60-600 GPa and tensile strength of about 6GPa
Maybe this somehow got mixed up?
The tensile strength is about 140 MPa according to TFA. This is similar to brass and far below carbon nanotubes at 63 GPa. http://en.wikipedia.org/wiki/Tensile_strength
http://bayimg.com/album/OaAaDAAAb
http://bayimg.com/album/oAaADaAaB
http://bayimg.com/jadhAAABp
Torque, not force
I note from TFA that "the urine is transferred to a device that generate drinking water".
It appears there is little privacy left when they drink each others urine.
Actually, No, I think they may have spent more time presenting the idea to politicians eager to look green than actually solving the issue, as is stated in TFA: "..requiring further technological development to realize"
The instability discussed, however is not really Newtons third law.
At 5MW, the wind will push on the rotor with a force up to 500kN or 50 tonnes and 50MNm of torque
/. that care to comment?
This is both a huge bending moment and dragging force.
To keep the mill from leaning more than 45 degrees backwards, it will need hundreds of tonnes of ballast,
With the windmill leaning backwards, the blade on one side will see a higher load than the blade on the other side, and the whole windmill will see a torque of maybe 10 MNm along the vertical axis.
How they plan to keep this stable is a mystery to me, and TFA does nothing to suggest a solution.
Anybody working for Hydro here on
12.
IP adresses of computers on the internet is not unique. A home user typically have one IP address, and typically have a network and a wireless network with multiple computers, including, unknowingly, possibly a neighbors PC as well as a laptop in a car parked in the street outside. All behind the NAT router.
All these computers typically share 1 IP address behind the NAT router.
IP addresses are changed on the fly, and it may be hard to document who had which at what time while maintaining evidence standards. (example: how is time zone set?, is daylight saving time settings etc documented?, how is Mediasentry's clock synchronized relative to the ISP and to real time?)
12,13,14. IP addresses can be spoofed, and protocols such as the 'Onion router' will make it appear as someone else's IP address. This is just a click away in many P2P interfaces.
15. There is no way to determine that these songs are "Illegal copies" or the users legal property.
15. There is no record that the songs available for download was actually downloaded.
Also, an IP network is exactly the opposite of a phone network: there are two kinds of networks: Switched networks, and circuit networks. The phone network is of the latter type, and the internet is of the other. The only (somewhat) unique device number in a TCP/IP network is the Ethernet MAC address, and that is not even part of the routed package.
Imagine there's no copyright
It's easy if you try
No RIAA below us
Above us only sky
Imagine all the people
Living for today
Imagine there's no Sony
It isn't hard to do
No music to steal or pay for
It's all free to you
Imagine all the people
Living life in peace
You may say that I'm a dreamer
But I'm not the only one
I hope someday you'll join us
And the world will be as one
Imagine free forever
I wonder if you can
No need for greed or DRM
A brotherhood of man
Imagine all the people
Sharing all the world
You may say that I'm a dreamer
But I'm not the only one
I hope someday you'll join us
And the world will live as one
Oops, off by a few zeroes I guess
A high end laptop with a core 2 duo at 2.4GHz rates around 20Gigaflops
You can probably overclock it to 25 Gigaflops, and it is 25mm thick(Opened up).
The GPU probably adds between 20 and 200 Gigaflops (Nvidia claims 500GFlops on the 8800) http://en.wikipedia.org/wiki/GeForce_8_Series
Maybe an overall estimate is 50 Gigaflops total is reasonable.
To get 2 Petaflop you will need 40 of these or a stack of 1 meter.
I do not know why you try to ridicule my points. Not very constructive. When converting a movie shot on my camcorder to mpeg4 H.264 I observe this:
1.8GHz: 7 hours
2.6GHz: 3 hours
Compile time for a project is
1.8GHz: 30 minutes
2.6GHz: 12 minutes
Not that the improvement is more than you would expect, as the pc is busy with other things as well during these tasks, with the extreme example below:
A SW driver for an 802.11g radio uses 90% of the CPU at 1.8GHz, and only 50% at 2.6GHz.
The performance difference for other applications therefore are 5x better (500%) on 2.6GHz.
If you only use e-mail, you should probably get a 1GHz or less single core system, an not worry about performance at all.
Of course people overclock. instead of buying the 2.6GHz Core 2 Duo, you just buy the 1.8GHz version and pay half the money ($160 insted of $320).
Now just overclock it back up to 2.6GHz.
You may want to do a little 2 corner testing (Voltage and Temp), just to make sure you are within stable regime.
As long as you dont overvoltage the chip, there is really no reason not to max out the clock rate. As soon as the CPU idles, it underclocks automatically anyway, so you get the boost only when you need it.
If you do any home video decoding, the difference is huge.
To make the point clear: You can burn out a power transistor if you run it too hard, but this is not possible on a CPU. It will hang long before it even gets close to be damaged. If the chip overheats and/or is driven at a too high clock, it just hangs. Reset and cool, and it is good as new.
So the fruit pickers will be from China instead of from Mexico.
I wonder where he got his math education. It is fairly simple to show that there exists a mapping between the results on a multiple choice test and "actual knowledge" K=T+|e|, where |e| is the statistical error, accounting for guessing statistically. Subtracting for wrong answers etc. is just "psychology". The statistical uncertainty "e" can easily be reduced below any significant value with more choices and more questions.
The example the author shows maximized the statistical uncertainty of guessing, and is not relevant. To illustrate the point: take the 100 question true/false test.
A) If you give 1 point for correct and no point for wrong, the student will score from S0=50 (randomness) to S0=100 (perfect). Now calculate a new score
S= 2*S0-100, and you have results from 0 to 100 (round anything less than 0 to 0.
B) Announce you will subtract 1 point for each wrong. Now you will get scores from T0=0 to T0=100, and your map is just T=T0.
Make it a library, and each user can "Check out" a copy of a song/movie for private use.
Contributors can upload/give their songs/items to the library, and must then archive their original media.
You will have to make sure an item can only be checked out by one person at one time.
If more than one copy of a song/item is added to the library, only store one copy, but keep track of available copies for checkout.
This should be a good semester project for programming 101 with a good web interface and a simple SQL backend.
This should meet all fair use requirements.
I don't really care. Many of my friends have 500GB external SATA drives full of all music and movies ever made.
at 3Gb/s, it copies in minutes. Sure beats any download.
We could even call it a library, and make sure only the number of copies that are owned are used at any one time, and it all is fair use.
You could even put up a WiFi AP on your roof, and share with your neighborhood. 108Mb/s actually gives 57Mb/s, but that is still 20 HD quality broadcasts for *each* wifi channel.
I don't understand anything of what you are saying. Can you be more specific, and maybe give me the energy eigenstates of the time independent Schrödinger equation of this system?
The maximum allowable field leaked from a microwave is 1W/m^2.
How can 60W induced in a coil much smaller possibly meet any regulatory requirements?
BTW, try to stand under a high power line with a fluorescent tube at night, and it will light up. No coil needed.
Creationism must be one of the lease troublesome aspects of christianity. The bible is a list of events that can only be considered insane: Water becomes wine, Virgins have babies, Apples have knowledge, oceans go dry, and the end of the world has been near for almost 2000 years now.
Saying you are a christian that believes in evolution is like saying your beliefsystem is only 99.99% screwed up.