I believe this collision algorithm takes a seed value and munges it (using neutral bits theory?) until you have two values that hash the same.
If you use your code as the seed, and design the algorithm so that the way it munges one part of it to only introduce NOPs and the other
oh yeah I see.
Yeah a collision algorithm can't really be used in this case. Or any case now that I'm thinking about it. Unless you can find a way to design the algorithm to give you specific outputs. But then its not a collision algorithm anymore; its a preimage algorithm.
I recently purchased a home. In not the best neighborhood (there are two soup kitchens within 2 miles, and 4 ABC stores in the same range)... I converted one of the rooms with external access into an audio studio. I worry a lot about security.
What did I do?
1. Every piece of equipment gets a steel cage. The design of these is simple; take standard steel stock, cut with a dremel, and build a rectangular prism that can contain the item in question. Yes I had to learn welding. Put in crossbars that prevent the item from being lifted out and a decently sized padlock. Most items I have been able to position the crossbars so that the item is useable while in the cage. With a laptop this would involve a bar at the top of the keyboard and one at the bottom. Pretty? no. Secure? yes. When you have $10,000+ worth of equipment and the first day you were at your new home you met a fine gentleman walking by how had "just got out" for "gettin caught up shanking that bitch girl o mine", it's worth it.
2. Video surveillance. It's visible. I designed and printed a custom sign to the effect of "premises under wireless video surveillance" with a diagram showing the camera, the computer, the internet, and the server. Indicating quite clearly that you can't just steal the computer and take the tapes with you. In my case I bought a bunch of tv cards and real wireless/wired surveillance cameras. With the size of a typical dorm room you could probably get away with a webcam. I coded up some Windows software that saves pictures off site whenever the frames have a certain amount of difference in them; I'll be glad to dig around and find that program for you if you want...
3. All my equipment has serial numbers on it. One clearly visible tag, one tag inside the equipment somewhere. The numbers and locations of tags are on hardcopy in my records safe. Local pawn shops are required to wait 30 days before selling new goods; plenty of time to call every one in town.
4. Insurance. If all these measures fail me, I'm still insured for full replacement value.
I have solid rubber wheels; they hate gravel and sand. I wouldn't mind some tubular knobbys... but I'd much rather just have a GE vehicle... especially since the main event I go to every year is the lake where the Jason movies were filmed. I'd love to try my chair out on that!!!! I'm thinking removable floats so its power-off condition is safe. Luckily I can still swim (though painfully) so getting dumped on the water isn't a huge issue...
nice... no sling seat... reduced incidence of RSI... and I'm assuming I can throttle the power assist way down and only use it when necessary (ramps, grass are good. Gravel is REALLY hard with my current chair, but the problem is not only lift as you end up lifting your weight over every minor rock, but traction as well...)
The main reason I want to DIY is a) I can create something that doesn't exist yet and b) I will only be intermittently in a chair. I can walk just fine, though with some pain. I can't walk more than about 10 meters at a time though; in the future this should expand to 50 meters or so as I strengthen my leg muscles. However, any effort more than that and I run the risk of severe long term damage... thus (after I get the current problem surgically corrected) I will need some sort of solution for long outdoor events.
Since ground effect is much better than wheels at handling semi-rough terrain it seemed like a natural answer... Either that or nice fat wheels, but then you lose some mobility as it gets harder to turn and go through doors...
I have yet to meet anyone with significant experience in Objective-C who can say they dislike the language.
Not that I like or dislike Objective-C (never used it), but this statement hardly proves anything. All the ones that disliked it didn't hang around long enough to get significant experience... and its not like Java or.NET where you pretty much have to know one (or both) to be employed in corporate america these days...
I myself am in a wheelchair and have been considering some "added mobility" features.
I don't want plain old electric motors. I want to have to wheel myself around with muscle mass. I'm in a wheelchair. I need all the excercise I can get.
But for longer distance or varying conditions, having other means is nice.
Where are the details? plans? How do I outfit myself with a jet engine? What kind of jet engine is it? turbine? pulse jet?
For the curious, my current plan is to hand build a wankel. Actually the whole engine will be hand built. Central keyed axle going through a series of flat modules; one power pack (battery+starter/generator), one wankel, one ducted fan assembly. The ducted fan will have two exhausts with louvres on the back to change the ratio of thrust to lift.
The modules will be enclosed in aluminum. The mounting bolts will be electrically isolated from the chassis, and serve as power distribution. Fuel will come from a propane tank; I'll have an emergency camp stove propane tank to guarantee I can always get back to my car to swap out.
That should give me a nice self contained bolt on ground effect system. I only plan on using it when on rough terrain (wheelchairs don't like gravel)... so I can buy a second chair and modify it for that purpose. When the GE engine is off, the chair will just sit on its legs (traditional style chair legs with big rubber feet for stability and traction)
Hmmm does this mean it'll still be a wheelchair?
But yeah I'd consider doing all/some of this with a jet engine; if I could find some details...
If you just take a look at the topic of this thread, you would realize that we are talking here about watching DVDs under Linux, not about copyright infringement. DVDs are encrypted, supposedly to protect their content and make it harder to produce illegal copies. As the law stands right now, it is perfectly legal for me to copy the encrypted content of a DVD to my hard drive under Linux, and then burn a backup copy to another DVD. That's simply fair use, and is your right. What is illegal, however, thanks to the DMCA, is to decrypt the content in order to actually watch the movie on my computer. Now please explain to me how this is supposed to prevent copyright infringement.
It doesn't matter is my point. Whether you believe it can prevent copyright infringement or not doesn't matter one sot. What matters is that they own the information; they spent money to create it and, pursuant with the law of the land, took steps to claim ownership of it, and now they don't want you using it in certain ways.
Sure it sucks. And its shortsighted. Don't like it? Get a laserdisc reader... which does have linux drivers, BTW:)
I would be willing to hear the argument that the gain of running the engine at peak efficiency would be offset by the losses in the motor-generator pair. (If so, why has it been the standard technology in railway traction for over fifty years?)
Alternator efficiently is generally around 70%. Electric motor efficiency is about the same. Making for a 50% (okay, 49%) efficient conversion. Maybe they have really good tech to push that up to 60% or 70%, but thats still a lot of wasted energy.
Why would someone want to put up with that? What possible reason to use such a system? Wires are solid state. If you have a large powertrain, like a railcar driving 4, 8, or even 16 wheels, the power distribution axles, with the attendant gear chains to allow the wheels to spin at different speeds when going around curves in the track, can get to be quite complicated and difficult to maintain.
Wires have no moving parts; as long as they're properly sized for the power going through them you don't have to worry about them. They'll never break down.
electronic transmissions are by their nature lossy; you have to turn the motive force of the engine into electricity, then shunt that electricity to some heavy duty motors.
What you really want is a continuously variable transmission. Luckily, they have them. It looks like two inside-out yo-yos with a steel belt between them. A hydraulic piston pushes the drive train unit in and out, pushing the steel belt higher or lower inside the pulley, effectively changing the gear ratio through a continuous curve.
Run your IC engine at its peak efficiency (or peak power, selectable during drive time) and to accelerate, you decrease the gear ratio. To cruise, you increase the gear ratio. And with proper bearings, its a lot more efficient than converting to electrical and back again.
Why aren't there any bolt on c.v.t's? I would think the enthusiast people would be all over it...
Who's going to write all these data layers? Maintain them? How many of them are going to be free? How many people are going to write a custom one for each piece of software?
Come on people! Software is TOO EXPENSIVE ALREADY!!! We don't need to make it even more difficult to create!
Yes, but there is open source software out there that does just that, all it takes is a little thought and a lot of development, and a Linux embedded media center could quickly overtake MCE...
A little thought... a lot of development... and a couple hundred dollars extra hardware.
I think its that last item that makes the difference.
Oh and lets not kid ourselves; MCE is a couple generations ahead of the curve in terms of usability and setup. It'll be a long time before the FOSS community throws enough time at the problem to make a clearly superior product. Of course it doesn't help that there are currently two big FOSS projects to do the same thing, not to mention the dozen or so minor projects.
Microsoft pays programmers money to make MCE usable. Free software developers work on it in their free time, and they have to pick one of two platforms to work on.
If some company does in fact own the rights to the DVD video format, someone please correct me on this.
Let's apply a little logic here:
1. CSS is proprietary. Their right to keep it proprietary has been upheld in a court of law.
2. CSS is used in DVD-Video.
Therefore DVD-Video is proprietary.
The rest of the technology it's based on is open or semi-open (the physical DVD spec and MPEG2)... but CSS is the key. And the lawsuits target improper use of licensed CSS technology.
And don't lie to yourself; "free software" has everything to do with price. Sure you can charge money for it. That doesn't mean its the free-as-in-speech people value. I consider myself to be a pretty savvy computer user (many professional certifications, writing multi-platform enterprise software, that sort of thing)... and I still wouldn't ever use Linux if it wasn't free-as-in-beer.
it makes absolutely no sense to make DVD decoding illegal, unless all you care about is lining your own pockets.
Do you honestly believe that all these companies invested so much in DVD-Video out of the goodness of their hearts?
Of course not! They put money into developing the media, the protocol, the copy protection... to make more money!
And now that they want to cash in on their investment, you decide that's morally wrong? Of course all they care about is lining their own pockets! And you would too if you were in their shoes!
I wrote some custom laser light show software last year. I suppose you feel you have a right to steal that too?
InterVideo has for a while now offered licensed DVD player software for Linux.
It's just not free, which is why you've never heard of it.
I don't know why everything on Linux has to be free and open source. Whether you like it or not, it's proprietary technology. They have a right to keep it closed. They have a right to charge you whatever they want for it.
First off, it's just a chip. Probably a small one. Maybe a daughterboard. It's not a ton of hardware in any case.
My windows machine wakes up from hibernate in 30 seconds. Sleep in 10. That's not counting time to take it out of lock and load the app.
The key here isn't that this is just another way to watch DVDs. It's a way to turn a complicated and error prone computing device into an appliance, with the stability that entails.
Also, I'm sure that booting into this mode saves battery life on processing power and boot up time. All of a sudden the battery can last longer than the DVD! (certainly not the case with my Thinkpad T30)
And finally, sure I could buy a portable mp3 player... and a portable DVD player... but they don't make portable DVD players with 14 inch screens. A low end 7 inch screen you can get for $200. I think the high quality 10 inch screens will run you upwards of $600. And as for the mp3 player... to get as much music on that as you can carry on a laptop, you'll have to shell out $200+ for a hard drive based player.
And when I'm travelling on business... that's three devices to carry instead of one. That makes a huge difference, especially if flying (three devices means extra luggage means extra inconvenience)
MCE does more than just watch content. It also records content. I'm sure that'll be in this eventually, but for the time being MCE is more fully featured. It's not a souped up Media Player; it's a souped up tivo...
One of the primary advantages of an OS (besides the GUI fluff) is that you have a unified centralized driver store. I'm not just talking about graphics cards and sound cards and ACPI, either, though that is certainly important.
I'm talking about data access layers, common control libraries, runtime environments, and the like.
Right now if there's a bug or vulnerability in my data access layer, Microsoft can update one file on each machine to fix that vulnerability in every application. In the system you describe, each one would have to be patched seperately. If you forget to patch one, it either continues to use the bad stuff, or just stops working.
This applies to Linux too... that's the point of dynamically linked libraries.
The manufacturer's info indicates that this can, though ~17 oz in volume, contains 10 oz of liquid. That means the cooling apparatus must occupy a little over 6 oz...
I mean the IOC is pretty draconian... but... this has nothing to do with online rights...
Maybe we need two YROs... YROf and YROn?
As a side note, a friend of mine's father is at the olympics... he says the americans are getting booed pretty heavily, especially when they win.
Just a note to the global community: just because we live here doesn't mean that we approve of the actions our country is taking. And let's be honest, these athletes train all day every day. Once you're on the olympic team the concept of free time goes out the window. Just how much do you believe these people can really influence politics?
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I believe this collision algorithm takes a seed value and munges it (using neutral bits theory?) until you have two values that hash the same.
If you use your code as the seed, and design the algorithm so that the way it munges one part of it to only introduce NOPs and the other
oh yeah I see.
Yeah a collision algorithm can't really be used in this case. Or any case now that I'm thinking about it. Unless you can find a way to design the algorithm to give you specific outputs. But then its not a collision algorithm anymore; its a preimage algorithm.
And too bad that ECC is a) not provably secure and b) is rumored to have been broken already.
It seems to be an alternate way to pass messages back and forth.
I don't know if you've noticed but remoteX doesn't work in a bandwidth constrained environment. They're claiming that this does.
I think the app has to be NX-aware for it to work, however...
I recently purchased a home. In not the best neighborhood (there are two soup kitchens within 2 miles, and 4 ABC stores in the same range)... I converted one of the rooms with external access into an audio studio. I worry a lot about security.
What did I do?
1. Every piece of equipment gets a steel cage. The design of these is simple; take standard steel stock, cut with a dremel, and build a rectangular prism that can contain the item in question. Yes I had to learn welding. Put in crossbars that prevent the item from being lifted out and a decently sized padlock. Most items I have been able to position the crossbars so that the item is useable while in the cage. With a laptop this would involve a bar at the top of the keyboard and one at the bottom. Pretty? no. Secure? yes. When you have $10,000+ worth of equipment and the first day you were at your new home you met a fine gentleman walking by how had "just got out" for "gettin caught up shanking that bitch girl o mine", it's worth it.
2. Video surveillance. It's visible. I designed and printed a custom sign to the effect of "premises under wireless video surveillance" with a diagram showing the camera, the computer, the internet, and the server. Indicating quite clearly that you can't just steal the computer and take the tapes with you. In my case I bought a bunch of tv cards and real wireless/wired surveillance cameras. With the size of a typical dorm room you could probably get away with a webcam. I coded up some Windows software that saves pictures off site whenever the frames have a certain amount of difference in them; I'll be glad to dig around and find that program for you if you want...
3. All my equipment has serial numbers on it. One clearly visible tag, one tag inside the equipment somewhere. The numbers and locations of tags are on hardcopy in my records safe. Local pawn shops are required to wait 30 days before selling new goods; plenty of time to call every one in town.
4. Insurance. If all these measures fail me, I'm still insured for full replacement value.
I have solid rubber wheels; they hate gravel and sand. I wouldn't mind some tubular knobbys... but I'd much rather just have a GE vehicle... especially since the main event I go to every year is the lake where the Jason movies were filmed. I'd love to try my chair out on that!!!! I'm thinking removable floats so its power-off condition is safe. Luckily I can still swim (though painfully) so getting dumped on the water isn't a huge issue...
nice... no sling seat... reduced incidence of RSI... and I'm assuming I can throttle the power assist way down and only use it when necessary (ramps, grass are good. Gravel is REALLY hard with my current chair, but the problem is not only lift as you end up lifting your weight over every minor rock, but traction as well...)
The main reason I want to DIY is a) I can create something that doesn't exist yet and b) I will only be intermittently in a chair. I can walk just fine, though with some pain. I can't walk more than about 10 meters at a time though; in the future this should expand to 50 meters or so as I strengthen my leg muscles. However, any effort more than that and I run the risk of severe long term damage... thus (after I get the current problem surgically corrected) I will need some sort of solution for long outdoor events.
Since ground effect is much better than wheels at handling semi-rough terrain it seemed like a natural answer... Either that or nice fat wheels, but then you lose some mobility as it gets harder to turn and go through doors...
I have yet to meet anyone with significant experience in Objective-C who can say they dislike the language.
.NET where you pretty much have to know one (or both) to be employed in corporate america these days...
Not that I like or dislike Objective-C (never used it), but this statement hardly proves anything. All the ones that disliked it didn't hang around long enough to get significant experience... and its not like Java or
I myself am in a wheelchair and have been considering some "added mobility" features.
I don't want plain old electric motors. I want to have to wheel myself around with muscle mass. I'm in a wheelchair. I need all the excercise I can get.
But for longer distance or varying conditions, having other means is nice.
Where are the details? plans? How do I outfit myself with a jet engine? What kind of jet engine is it? turbine? pulse jet?
For the curious, my current plan is to hand build a wankel. Actually the whole engine will be hand built. Central keyed axle going through a series of flat modules; one power pack (battery+starter/generator), one wankel, one ducted fan assembly. The ducted fan will have two exhausts with louvres on the back to change the ratio of thrust to lift.
The modules will be enclosed in aluminum. The mounting bolts will be electrically isolated from the chassis, and serve as power distribution. Fuel will come from a propane tank; I'll have an emergency camp stove propane tank to guarantee I can always get back to my car to swap out.
That should give me a nice self contained bolt on ground effect system. I only plan on using it when on rough terrain (wheelchairs don't like gravel)... so I can buy a second chair and modify it for that purpose. When the GE engine is off, the chair will just sit on its legs (traditional style chair legs with big rubber feet for stability and traction)
Hmmm does this mean it'll still be a wheelchair?
But yeah I'd consider doing all/some of this with a jet engine; if I could find some details...
If you just take a look at the topic of this thread, you would realize that we are talking here about watching DVDs under Linux, not about copyright infringement. DVDs are encrypted, supposedly to protect their content and make it harder to produce illegal copies. As the law stands right now, it is perfectly legal for me to copy the encrypted content of a DVD to my hard drive under Linux, and then burn a backup copy to another DVD. That's simply fair use, and is your right. What is illegal, however, thanks to the DMCA, is to decrypt the content in order to actually watch the movie on my computer. Now please explain to me how this is supposed to prevent copyright infringement.
:)
It doesn't matter is my point. Whether you believe it can prevent copyright infringement or not doesn't matter one sot. What matters is that they own the information; they spent money to create it and, pursuant with the law of the land, took steps to claim ownership of it, and now they don't want you using it in certain ways.
Sure it sucks. And its shortsighted. Don't like it? Get a laserdisc reader... which does have linux drivers, BTW
I would be willing to hear the argument that the gain of running the engine at peak efficiency would be offset by the losses in the motor-generator pair. (If so, why has it been the standard technology in railway traction for over fifty years?)
Alternator efficiently is generally around 70%. Electric motor efficiency is about the same. Making for a 50% (okay, 49%) efficient conversion. Maybe they have really good tech to push that up to 60% or 70%, but thats still a lot of wasted energy.
Why would someone want to put up with that? What possible reason to use such a system? Wires are solid state. If you have a large powertrain, like a railcar driving 4, 8, or even 16 wheels, the power distribution axles, with the attendant gear chains to allow the wheels to spin at different speeds when going around curves in the track, can get to be quite complicated and difficult to maintain.
Wires have no moving parts; as long as they're properly sized for the power going through them you don't have to worry about them. They'll never break down.
electronic transmissions are by their nature lossy; you have to turn the motive force of the engine into electricity, then shunt that electricity to some heavy duty motors.
What you really want is a continuously variable transmission. Luckily, they have them. It looks like two inside-out yo-yos with a steel belt between them. A hydraulic piston pushes the drive train unit in and out, pushing the steel belt higher or lower inside the pulley, effectively changing the gear ratio through a continuous curve.
Run your IC engine at its peak efficiency (or peak power, selectable during drive time) and to accelerate, you decrease the gear ratio. To cruise, you increase the gear ratio. And with proper bearings, its a lot more efficient than converting to electrical and back again.
Why aren't there any bolt on c.v.t's? I would think the enthusiast people would be all over it...
Who's going to write all these data layers? Maintain them? How many of them are going to be free? How many people are going to write a custom one for each piece of software?
Come on people! Software is TOO EXPENSIVE ALREADY!!! We don't need to make it even more difficult to create!
Just because they're not educated like you were doesn't mean they're uneducated.
When's the last time you churned some really good butter from sweet cream?
When's the best week of the year to plant wheat?
If you want to have eggs for breakfast every morning to feed a family of five, how many chickens do you need?
They're not primitive. Primitive implies uneducated.
The amish are very intelligent hardworking people. They just choose to live without technology.
Yes, but there is open source software out there that does just that, all it takes is a little thought and a lot of development, and a Linux embedded media center could quickly overtake MCE...
A little thought... a lot of development... and a couple hundred dollars extra hardware.
I think its that last item that makes the difference.
Oh and lets not kid ourselves; MCE is a couple generations ahead of the curve in terms of usability and setup. It'll be a long time before the FOSS community throws enough time at the problem to make a clearly superior product. Of course it doesn't help that there are currently two big FOSS projects to do the same thing, not to mention the dozen or so minor projects.
Microsoft pays programmers money to make MCE usable. Free software developers work on it in their free time, and they have to pick one of two platforms to work on.
If some company does in fact own the rights to the DVD video format, someone please correct me on this.
Let's apply a little logic here:
1. CSS is proprietary. Their right to keep it proprietary has been upheld in a court of law.
2. CSS is used in DVD-Video.
Therefore DVD-Video is proprietary.
The rest of the technology it's based on is open or semi-open (the physical DVD spec and MPEG2)... but CSS is the key. And the lawsuits target improper use of licensed CSS technology.
And don't lie to yourself; "free software" has everything to do with price. Sure you can charge money for it. That doesn't mean its the free-as-in-speech people value. I consider myself to be a pretty savvy computer user (many professional certifications, writing multi-platform enterprise software, that sort of thing)... and I still wouldn't ever use Linux if it wasn't free-as-in-beer.
it makes absolutely no sense to make DVD decoding illegal, unless all you care about is lining your own pockets.
Do you honestly believe that all these companies invested so much in DVD-Video out of the goodness of their hearts?
Of course not! They put money into developing the media, the protocol, the copy protection... to make more money!
And now that they want to cash in on their investment, you decide that's morally wrong? Of course all they care about is lining their own pockets! And you would too if you were in their shoes!
I wrote some custom laser light show software last year. I suppose you feel you have a right to steal that too?
InterVideo has for a while now offered licensed DVD player software for Linux.
It's just not free, which is why you've never heard of it.
I don't know why everything on Linux has to be free and open source. Whether you like it or not, it's proprietary technology. They have a right to keep it closed. They have a right to charge you whatever they want for it.
First off, it's just a chip. Probably a small one. Maybe a daughterboard. It's not a ton of hardware in any case.
My windows machine wakes up from hibernate in 30 seconds. Sleep in 10. That's not counting time to take it out of lock and load the app.
The key here isn't that this is just another way to watch DVDs. It's a way to turn a complicated and error prone computing device into an appliance, with the stability that entails.
Also, I'm sure that booting into this mode saves battery life on processing power and boot up time. All of a sudden the battery can last longer than the DVD! (certainly not the case with my Thinkpad T30)
And finally, sure I could buy a portable mp3 player... and a portable DVD player... but they don't make portable DVD players with 14 inch screens. A low end 7 inch screen you can get for $200. I think the high quality 10 inch screens will run you upwards of $600. And as for the mp3 player... to get as much music on that as you can carry on a laptop, you'll have to shell out $200+ for a hard drive based player.
And when I'm travelling on business... that's three devices to carry instead of one. That makes a huge difference, especially if flying (three devices means extra luggage means extra inconvenience)
MCE does more than just watch content. It also records content. I'm sure that'll be in this eventually, but for the time being MCE is more fully featured. It's not a souped up Media Player; it's a souped up tivo...
One of the primary advantages of an OS (besides the GUI fluff) is that you have a unified centralized driver store. I'm not just talking about graphics cards and sound cards and ACPI, either, though that is certainly important.
I'm talking about data access layers, common control libraries, runtime environments, and the like.
Right now if there's a bug or vulnerability in my data access layer, Microsoft can update one file on each machine to fix that vulnerability in every application. In the system you describe, each one would have to be patched seperately. If you forget to patch one, it either continues to use the bad stuff, or just stops working.
This applies to Linux too... that's the point of dynamically linked libraries.
Windows Media Player does not include a DVD player; it can play DVDs, but you need to install a codec. WinDVD installs the codec for it to use.
A shortcut to convert difference in farenheit to difference in celsius is to add 32 to the farenheit difference...
30 + 32 = 62F = 16.6666667C
BTW, standard coke cans are 12 oz.
"fun size" cans are 8 oz.
The manufacturer's info indicates that this can, though ~17 oz in volume, contains 10 oz of liquid. That means the cooling apparatus must occupy a little over 6 oz...
I mean the IOC is pretty draconian... but... this has nothing to do with online rights...
Maybe we need two YROs... YROf and YROn?
As a side note, a friend of mine's father is at the olympics... he says the americans are getting booed pretty heavily, especially when they win.
Just a note to the global community: just because we live here doesn't mean that we approve of the actions our country is taking. And let's be honest, these athletes train all day every day. Once you're on the olympic team the concept of free time goes out the window. Just how much do you believe these people can really influence politics?