Basically, the layer of air between the thermal spreader (base plate) and the impeller if very thin and very turbulent, because it is 'grinded' between the the impeller and the base plate. That actually makes it a very good heat conductor.
It's explained very well in the Sandia Labs paper. Seems like a very plausible and good design.
Exactly. What the hell is '3D' doing in a window manager? Are the Ubuntu devs trying to hop on the 3d movie hype bandwagon? It's just sad. More so that they are now steeling the name of the excellent Unity3D game engine.
A modified Voith Schneider design makes sense to me (more than a Flettner design). I can see how it might be more silent than a normal rotor or turbine, since it doesn't move as much air, but relies on lift created by moving wing-shaped blades through the air. In water it's really efficient. In air, who knows? But I wonder at their claims of a super-strong nearly frictionless bearing... they obviously need it, since the blades 'flap' around with each rotation of the rotor. If they can make the bearings last, this is a wonderful feat of engineering.
Or just supply binaries for each architecture, as done for most Linux based OS. Or supply the source code and let people compile their own (no likely for commercial apps). A nice by-product of this approach is that it forces developers to write better, more portable code.
99.9% of all life amounted to nothing; it just reproduced or died. But a very small portion evolved into some new life form. Same thing with information: most of the media spew out trash, to be consumed en masse and disappear from our memories mere seconds after. But sometimes a real jewel surfaces from this chaos of information; we must cherish it and keep it alive, so that it may give rise to something new. There is only one way: by copying and building further on it.
How would you feel if you needed a license to reproduce?
TCL is a general purpose, interpreted, programming language. It can be used for any kind of application but is particularly suitable for web applications and text processing, because it's string oriented. It's also great for integrating different libraries (via the simple C API), prototyping (interpreted, dynamic typing) and GUI programming (Tk library).
Never occurred to me that Minecraft's creepers (viz. a kind of exploding NPC, a Minecrafter's worst enemy) may be a actually be named after an early computer virus... or maybe they are just called that because they sort of creep up on you, and then... BOOM.
Beating a human player at rock-paper-scissor is easy. Computers playing against each other is much more fun. There used to be a computer RoShamBo (same game, different name) competition, see: http://webdocs.cs.ualberta.ca/~darse/rsbpc.html
Volume 3 was first published in 1973. That is 38 years ago. Also, the first (incomplete) paperback edition of volume 4 was published in 2005. In 2011, volume 4 is still not complete. Wtf 28 years? Please don't post again until the whole series is complete.
Consciousness is simply a continuous awareness of the current, though senses, and the past, though memory. It is interrupted every night when you go to sleep. When you wake up, you remember the days before, smell the familiar smells etc. You still feel like you.
Imagine going to sleep in your old human body, and waking up as a robot/computer program. It would be weird, but this new you would still think of itself as you, since all your memories are still there, and you remember all the preparations to have your brain replicated in a computer....
Continuity is perhaps not such an important ingredient of consciousness after all. In some eastern philosophies and meditation practices (mindfulness meditation, Theravada Buddism) it is taught that consciousness dies many times a second, and is born again many times a second...
I have withdrawn the article that appears to have upset so many computer enthusiasts.
I realise that the opinion I expressed in it was contentious but the reaction from some individuals was way too extreme. I think that wishing death upon someone because they wrote how they witnessed a change in the way their hi-fi sounded when they swapped a cable in a NAS is a bit of an over-reaction. Anyone in my office, including my wife and children, can read my email and they were not impressed by this and the volume of similarly aggressive correspondance.
I know full well that it is ‘scientifically’ not possible for a data cable to exert such influence but I know what we heard and hoped that maybe someone might be able to throw some light on what might be going on. While a couple of people kindly wrote and did just that most people simply said “It’s just ones and noughts, you stupid (expletive),” which wasn’t especially helpful.
Simple solution: support both ePub and PDF. The first is reflowable and suitable for text oriented content. The second is great for graphics and other content that needs precise control over layout. Both formats support adobe DRM, to keep vendors happy, and both are also open and thus suitable for public domain content. Finally, practically all ebook readers (except the Kindle) already support both these formats.
I'm skeptical. Big coal and oil companies are already patenting the hell out of every possible green tech, without any plans to actually implement this. Fast-tracking patents is likely to hinder innovative green startups, which cannot afford to patent everything, nor lawyers to hold off the bad guys. Rather depressing. Please tell me I'm wrong.
Of course, the aliens will have their own god, who is, like our god, the only god in the universe, but not the same god. This paradox can only be solved in one way: good old-fashioned interstellar war.
CT scans are faster and cheaper. MRI machines are more expensive to build, require more highly trained technicians to operate, and also use more power than CT machines. Further, CT machines are faster, and therefore better suited for taking images of moving body parts (like the abdomen, chest). Finally, doctors have had longer to get used to CT machines, and thus find it easier to interpret the images. CT scans are best at picking up details in calcified tissues, e.g. bone, whereas MRI is better for taking detailed pictures of the brain and other soft tissues.
Their control method seems very crude to me. They have no control over the bugs little brain at all. If you want it to take off, give it an electric jolt, and it will fly away. Like hitting cow with a stick. Sure, that works. If you want it to stop, give it a bigger jolt, and it will drop out of the air. Like hitting a someone over the head with a bigger stick. Left and right: shock one wing so it will twitch and not work properly for a moment while the other wing goes on, and voila, steering. This is not neuro-science, but animal cruelty.
"between 1949 and 1961 two full revolutions around Jupiter were completed" (by the comet in question, around Jupiter)
Two revolutions is not much. It's an orbit, but not a steady orbit. Shoemaker-Levy 9 did 12 orbits in 50 years, a little bit more stable, but alas, it crashed into the planet.
Here, the absence of such bugs is just a useful by-product of the proof. To be able to complete our proof of functional correctness, we also prove a large number of so-called invariants: properties that we know to always be true when the kernel runs.
Indeed, spot on. Modelling or simulating our brain is not necessarily the most efficient way to create 'intelligence'. It depends of course on your definition of intelligence, and more importantly, on the goals you set for your artificial brain. If the goal of this artificial intelligence is to design even more intelligent entities, then it will probably have to solve hard computational problems, which our brains are not particularly good at - that's why we invented computers in the first place.
I see more future in well-designed machines and algorithms (i.e. thought up and understood by us rather than imitations of unpredictable nature) that can solve a broad class of problems (i.e. logic, maths) with an ability to learn, so they can solve more specific, frequently occuring problems more efficiently. So, basically the practical AI approach. However, whereas most practical AI advocates say that we should not even consider AI's with human-like intelligence, I do believe that if these algorithms are sufficiently powerful and flexible, then they can be set up to work in an open-ended way, i.e. freely interacting, setting their own goals, etc., so the will appear to function as independent, sentient, intelligent entities.
more importantly, it IS illegal to distribute copyrighted works in the Netherlands without permission from the copyright holder, AND to solicit such offerings.
Until now, this law has not been applied to international internet web sites. But now, with this new ruling, BREIN (the Dutch RIAA) can go ahaed and sue all ISP that allow you to connect to TPB.
Bad stuff.
On the good side, there is no way that TPB can accurately determine whether a user is in the Netherlands, so this ruling can be easily overthrown. Rulings like this, from a shortened procedure, a so called 'kort geding', can be very quickly reversed simply by letting the court know that you are opposing the judgement and setting a date for retrial. Lets hope TPB will do so quickly and show up this time.
I think that TPB website will be available for a while yet. But I for one am going to help anyone circumvent any IP blocks.
Nonsense. C and C++ are statically typed languages, and therefore very good at catching errors at compile time. Only an idiot would use pointers and unsafe casts. Anyway, who said that this bug is in C or C++ code? Most likely, some fool is simply interpreting a file format wrongly. If I were trolling, I'd say XML is the culprit. Fuck XML.
No, this 'learning' compiler only learns how to optimally translate C++ statements to machine level operations. It cannot choose high level algorithms for you. And the reason that such a learning compiler is useful is not to help lazy application programmers, but because developing new, optimised compilers for the many different processors and platforms out there (think computers, mobile phones, embedded systems, etc) is time consuming.
what about the scores of US companies that have sold and are selling weapons to Iran, to other hostile, dictatorial and oppressive regimes and to third world counties. WTF! In my book that is much worse than what Siemens and Nokia did. Oh, but these are not US companies.... so that makes it alright then. Hypocrits.
Slashdot Mirror
You're wrong.
Basically, the layer of air between the thermal spreader (base plate) and the impeller if very thin and very turbulent, because it is 'grinded' between the the impeller and the base plate. That actually makes it a very good heat conductor.
It's explained very well in the Sandia Labs paper. Seems like a very plausible and good design.
Exactly. What the hell is '3D' doing in a window manager? Are the Ubuntu devs trying to hop on the 3d movie hype bandwagon? It's just sad.
More so that they are now steeling the name of the excellent Unity3D game engine.
A modified Voith Schneider design makes sense to me (more than a Flettner design). I can see how it might be more silent than a normal rotor or turbine, since it doesn't move as much air, but relies on lift created by moving wing-shaped blades through the air. In water it's really efficient. In air, who knows?
But I wonder at their claims of a super-strong nearly frictionless bearing... they obviously need it, since the blades 'flap' around with each rotation of the rotor. If they can make the bearings last, this is a wonderful feat of engineering.
Or just supply binaries for each architecture, as done for most Linux based OS. Or supply the source code and let people compile their own (no likely for commercial apps). A nice by-product of this approach is that it forces developers to write better, more portable code.
99.9% of all life amounted to nothing; it just reproduced or died. But a very small portion evolved into some new life form. Same thing with information: most of the media spew out trash, to be consumed en masse and disappear from our memories mere seconds after. But sometimes a real jewel surfaces from this chaos of information; we must cherish it and keep it alive, so that it may give rise to something new. There is only one way: by copying and building further on it.
How would you feel if you needed a license to reproduce?
TCL is a general purpose, interpreted, programming language. It can be used for any kind of application but is particularly suitable for web applications and text processing, because it's string oriented. It's also great for integrating different libraries (via the simple C API), prototyping (interpreted, dynamic typing) and GUI programming (Tk library).
Never occurred to me that Minecraft's creepers (viz. a kind of exploding NPC, a Minecrafter's worst enemy) may be a actually be named after an early computer virus... or maybe they are just called that because they sort of creep up on you, and then... BOOM.
Beating a human player at rock-paper-scissor is easy. Computers playing against each other is much more fun. There used to be a computer RoShamBo (same game, different name) competition, see: http://webdocs.cs.ualberta.ca/~darse/rsbpc.html
Where's the Facebook 'Like' button?
Volume 3 was first published in 1973. That is 38 years ago. Also, the first (incomplete) paperback edition of volume 4 was published in 2005. In 2011, volume 4 is still not complete. Wtf 28 years? Please don't post again until the whole series is complete.
Consciousness is simply a continuous awareness of the current, though senses, and the past, though memory. It is interrupted every night when you go to sleep. When you wake up, you remember the days before, smell the familiar smells etc. You still feel like you.
Imagine going to sleep in your old human body, and waking up as a robot/computer program. It would be weird, but this new you would still think of itself as you, since all your memories are still there, and you remember all the preparations to have your brain replicated in a computer....
Continuity is perhaps not such an important ingredient of consciousness after all. In some eastern philosophies and meditation practices (mindfulness meditation, Theravada Buddism) it is taught that consciousness dies many times a second, and is born again many times a second...
From the blog:
I have withdrawn the article that appears to have upset so many computer enthusiasts.
I realise that the opinion I expressed in it was contentious but the reaction from some individuals was way too extreme. I think that wishing death upon someone because they wrote how they witnessed a change in the way their hi-fi sounded when they swapped a cable in a NAS is a bit of an over-reaction. Anyone in my office, including my wife and children, can read my email and they were not impressed by this and the volume of similarly aggressive correspondance.
I know full well that it is ‘scientifically’ not possible for a data cable to exert such influence but I know what we heard and hoped that maybe someone might be able to throw some light on what might be going on. While a couple of people kindly wrote and did just that most people simply said “It’s just ones and noughts, you stupid (expletive),” which wasn’t especially helpful.
Pretty sad.
Simple solution: support both ePub and PDF. The first is reflowable and suitable for text oriented content. The second is great for graphics and other content that needs precise control over layout. Both formats support adobe DRM, to keep vendors happy, and both are also open and thus suitable for public domain content. Finally, practically all ebook readers (except the Kindle) already support both these formats.
These formats aren't perfect, but good enough.
Don't need a committee to figure that out.
I'm skeptical. Big coal and oil companies are already patenting the hell out of every possible green tech, without any plans to actually implement this. Fast-tracking patents is likely to hinder innovative green startups, which cannot afford to patent everything, nor lawyers to hold off the bad guys. Rather depressing. Please tell me I'm wrong.
Of course, the aliens will have their own god, who is, like our god, the only god in the universe, but not the same god. This paradox can only be solved in one way: good old-fashioned interstellar war.
CT scans are faster and cheaper. MRI machines are more expensive to build, require more highly trained technicians to operate, and also use more power than CT machines. Further, CT machines are faster, and therefore better suited for taking images of moving body parts (like the abdomen, chest). Finally, doctors have had longer to get used to CT machines, and thus find it easier to interpret the images. CT scans are best at picking up details in calcified tissues, e.g. bone, whereas MRI is better for taking detailed pictures of the brain and other soft tissues.
Their control method seems very crude to me. They have no control over the bugs little brain at all. If you want it to take off, give it an electric jolt, and it will fly away. Like hitting cow with a stick. Sure, that works. If you want it to stop, give it a bigger jolt, and it will drop out of the air. Like hitting a someone over the head with a bigger stick. Left and right: shock one wing so it will twitch and not work properly for a moment while the other wing goes on, and voila, steering. This is not neuro-science, but animal cruelty.
By the way, something similar, only more funny, has been done with humans recently: http://thekeyidea.blogspot.com/2009/08/controlling-navigation-by-ear-pulling.html
RTFA!
"between 1949 and 1961 two full revolutions around Jupiter were completed" (by the comet in question, around Jupiter)
Two revolutions is not much. It's an orbit, but not a steady orbit. Shoemaker-Levy 9 did 12 orbits in 50 years, a little bit more stable, but alas, it crashed into the planet.
A lot of people here are saying: duh, they only proved that the C code has the same bugs as the formal specification.
But the researchers did consider that. The formal specification also allows them to prove important properties of the L4 kernel.
See the researcher's website: http://ertos.nicta.com.au/research/l4.verified/proof.pml
From the website:
Here, the absence of such bugs is just a useful by-product of the proof. To be able to complete our proof of functional correctness, we also prove a large number of so-called invariants: properties that we know to always be true when the kernel runs.
but why would you
Indeed, spot on. Modelling or simulating our brain is not necessarily the most efficient way to create 'intelligence'. It depends of course on your definition of intelligence, and more importantly, on the goals you set for your artificial brain. If the goal of this artificial intelligence is to design even more intelligent entities, then it will probably have to solve hard computational problems, which our brains are not particularly good at - that's why we invented computers in the first place.
I see more future in well-designed machines and algorithms (i.e. thought up and understood by us rather than imitations of unpredictable nature) that can solve a broad class of problems (i.e. logic, maths) with an ability to learn, so they can solve more specific, frequently occuring problems more efficiently. So, basically the practical AI approach. However, whereas most practical AI advocates say that we should not even consider AI's with human-like intelligence, I do believe that if these algorithms are sufficiently powerful and flexible, then they can be set up to work in an open-ended way, i.e. freely interacting, setting their own goals, etc., so the will appear to function as independent, sentient, intelligent entities.
Just my two cents.
heehee, that cracked me up. Very Douglas Adams.
more importantly, it IS illegal to distribute copyrighted works in the Netherlands without permission from the copyright holder, AND to solicit such offerings.
Until now, this law has not been applied to international internet web sites. But now, with this new ruling, BREIN (the Dutch RIAA) can go ahaed and sue all ISP that allow you to connect to TPB.
Bad stuff.
On the good side, there is no way that TPB can accurately determine whether a user is in the Netherlands, so this ruling can be easily overthrown. Rulings like this, from a shortened procedure, a so called 'kort geding', can be very quickly reversed simply by letting the court know that you are opposing the judgement and setting a date for retrial. Lets hope TPB will do so quickly and show up this time.
I think that TPB website will be available for a while yet. But I for one am going to help anyone circumvent any IP blocks.
Nonsense. C and C++ are statically typed languages, and therefore very good at catching errors at compile time. Only an idiot would use pointers and unsafe casts. Anyway, who said that this bug is in C or C++ code? Most likely, some fool is simply interpreting a file format wrongly. If I were trolling, I'd say XML is the culprit. Fuck XML.
No, this 'learning' compiler only learns how to optimally translate C++ statements to machine level operations. It cannot choose high level algorithms for you. And the reason that such a learning compiler is useful is not to help lazy application programmers, but because developing new, optimised compilers for the many different processors and platforms out there (think computers, mobile phones, embedded systems, etc) is time consuming.
what about the scores of US companies that have sold and are selling weapons to Iran, to other hostile, dictatorial and oppressive regimes and to third world counties. WTF! In my book that is much worse than what Siemens and Nokia did. Oh, but these are not US companies.... so that makes it alright then. Hypocrits.