I can't see this being something which can be applied meaningfully to home setups.
Maybe thats the point, trying to give cinema's an advantage?
No, it's Dolby trying like hell to stay relevant and ensure that theaters and home products continue to license the technology from Dolby. Dolby makes their money off licensing their proprietary surround sound and compression algorithms for DVD players, TVs, etc. They don't produce much in the way of actual systems or hardware.
It's almost guaranteed that this will extend into the home market in a few years, because those manufacturers need a new gimmick to sell to the home consumer. Right now that gimmick is 3D. I also expect a new disk format to replace Blu-Ray to give consumers yet another reason to upgrade.
Still it's an interesting idea of getting away from pre-mixed sound channels, and encoding the info as objects and spatial locations. In theory with sufficient processing power, the player processes all that info into the right number of speaker channels for that system.
Move out of your expensive city. I'm twice as rich as someone 200 miles away in Chicago who earns the same salary as me, because everything costs twice as much up there (or more). Someone making my salary in New York City would probably be living in a cardboard box, but I live a comfortable middle class life here in Springfield.
You're probably exaggerating a bit. I moved out of an expensive area into a rural area. Housing is about half and I actually have some acreage to go with it, but realistically everything else is similar. Food, clothes, etc are all about the same. It's the other non tangibles that caused me to move, like living somewhere the kids can roam the neighborhood safely, zero traffic, etc.
No more unconstitutional than all the other procurement regulations that steer business to black, women owned businesses (often at significantly higher prices too). As much as I'd rather see regulations that forced the govt to buy american made products, I know all too well how much paperwork and micromanagement such BS rules create. I'm tired of filling out the paperwork to prove that the monitor I'm buying is handicap accessible.
Also to say they can't be detected by sonar is wrong - they can't be detected by sonar from behind or directly in front, since the boat would be moving faster than the sonar waves straight on going forward (unless the boat also absorbs sonar, that is).
For your claim to be true, it would have to be moving around 3300 mph. Not likely. Cavitation generates a huge amount of noise. For a "supercavitating" torpedo you don't care because the target can't outrun it or often react fast enough to make evasive maneuvers.
It would also be nice if the article made the distinction between cavitating and injecting air at the bow. Air injection at the bow has some beneficial benefit for drag (not called friction in water) and acoustic (isolates hull noise from the water), but it also generates its own broadband noise.
Maybe I'm just being silly, but if you also encrypt the message using standard means it will look identical to random noise, making it impossible to tell if you stumbled upon the correct current and voltage in the first place. Alternatively, Alice and Bob are able to detect your trying to intercept their communications, which means they can alter their behavior long before you stumble upon the correct settings.
What is stopping the observe from measuring the voltage at two points along the wire? The wire has some non-zero resistance so the difference in voltage between the points should yield the current flow. Basically you'd use the wire itself as the shunt resistor which would not be noticed.
Both suck, especially eEye Retina for Linux. They always report findings on Redhat RHEL and most other stable distros because it just looks at the package major version numbers, without understanding that Redhat backports fixes. It's also somewhat limited in that it just tells you if you've got outdated packages and checks a few config settings. It will NOT tell you if you did something retarded like not scrubbing inputs to a sql query.
I highly agree with the advice of removing anything non-essential. If the service or executable isn't needed, remove the package entirely. Or better yet don't do a full OS install like most newbs. Take advantage of things like mounting filesystems read-only and/or no-exec if you don't need to write or exec from them. IPTables to limit ports and foreign IPs and ban2fail will cut down a lot of scanning noise.
If you are on a network that already features Flame, you should probably just wipe and reinstall now.
Otherwise, that security update was probably Microsoft's emergency blacklisting of the signing keys that were used to make the Flame components pass as MS-signed software...
The MS description of the update said it was to update the CRL list, so yes it was basically blacklisting the compromised certificate.
While hydrogen sucks for density per volume at 5.6 MJ/liter versus gasoline at 34 MJ/liter, it's actually has good energy density by weight with 123 MJ/kg versus gasoline at 47 MJ/kg. The huge bulbous body of this thing is simply to store all the fuel. I suspect their main reason for going hydrogen was that it's easier to burn at high altitude and has a wide useable fuel/air ratio.
This low energy density per volume, is also the reason why it can't really be used for trucking. You'd take up half of the usable cargo room just to get the equivalent amount of energy as a normal diesel fill.
Uh, except these aren't nuclear weapons production facilities, supposedly. It is uranium enrichment for peaceful nuclear power.
If this "admission" were to be taken seriously I would expect Iran to be mighty pissed about it and want something worth millions (tens of millions?) to happen to the US, somewhere, somehow.
Actual intentions aside, Iran is still a very long way off from producing materials suitable for a nuclear bomb. The best they can do is 20% purity, you need around 90% pure materials for a nuclear explosive device. What they can produce right now is suitable for medical isotopes, possible reactors (are they actually building any plants?) or dirty bombs (conventional explosive to spread radioactive materials).
The goal of Stuxnet wasn't to cause damage, so much as to screw with the centrifuges speeds to prevent them from working efficiency and reduce the quality of the materials they generated. Brilliant ploy and implementation if you ask me, but I also happen to consider it an act of sabotage bordering on an act of war. If Iran shut down our power plants with a virus, we'd certainly consider it an act of war.
The federal DNC list has quite a few exceptions that my local state DNC list did not have, such as charities and political groups. (Go figure Congress would exempt themselves, eh?) Since our state has dropped their DNC program in favor of the federal list, I'm getting a lot of calls again. Plus the feds are pretty lax about enforcing complaints. Our state AG dept was actually pretty good about it and would fine organizations if they got complaints.
If the Apple Retina display is already beyond the point a human eye can resolve - what's more resolution going to get you?
You've been drinking the Apple cool-aid again. The resolution of human retina is higher than the 300 ppi claimed by Apple. It's closer to 477 ppi at 12 inches. Plus, how many people do you know that hold their iPhone 12" away from their face when doing anything but dialing?
I'd rather hold it a little closer and have the screen fill more of my field of view. More pixels euqals more real estate. Now if I can just convince the laptop makes to stop lowering their 15" screen resolutions to less than my phone's 3" display.
Good luck getting really accurate FEA results in turbulent flow as well. I do testing on large scale models to validate the predictions created using computational models. More often than not, the models are not very accurate and they end up 'adjusting' the models to match the actual results.
Analytic solutions are far superior to computed approximations. They are far easier to calculate--computers have made computed approximations far easier, but most of the time that doesn't mean that they're *easy*--only that they're now possible. Being able to obtain the answer in a small fraction of the time is still a big advantage.
Have fun with solving the Navier-Stokes equations then;)
For most engineering problems, you don't need the exact answer. You just need a sufficiently accurate one. For NS, the trick was recognizing which terms were tiny and throwing them out. Who cares if your answer is 0.000001% off if it means reducing the equation down to 4 parts that can be easily solved on paper.
Moreover, at least in Florida and other states IIRC (from the time I used to work in Home Depot), the law typically mandates that you, the seller, must charge what is in the label.
You are wrong. The label on the product is an invitation for conducting a legal transaction or contract sale. It is not a binding commitment to sell at that price under and the store has no legal obligation to sell it to you at that price. When it gets rung up and the cashier gives you the total and you pay that total - that is the actual 'contract'. Contracts in most states are null and void if there was fraud involved by either party.
Sorry to be a whiny bitch, but the MiG-25 was actually designed to shoot down the XB-70 Valkyrie. The XB-70 project may appear to be a failure in that it only produced two prototypes at enormous cost, but it achieved what it was supposed to in that the USSR spent a fortune building a fleet of interceptors to shoot it down.
And now Al Queda does the same thing to use. They employ a few guys with piloting skills and box cutters and we spend trillions trying to hunt down their boss and securing our airports against a non-threat.
The next time I see a bunch of Oakland police union leaders screaming about not cutting anymore cops, I'm going to laugh in their face and show them this article.
The fact that ten cops have time to dick around on such a trivial thing indicates they have too many cops already.
Or, it means all the cops were scared for their jobs and were trying to win brownie points by finding the Chiefs kids phone.
As funny as it sounds, to reduce skin friction, you need to introduce turbulence - a very special type of turbulence. This has been the focus of quite a bit of research especially for aircraft and boats. This link (PDF warning) will explain how this is achieved.
That's not friction. That's drag.
Heinz shaped their bottles specifically so that the ketchup would be harder to get out, thereby adding to the illusion that their product was thicker and better.
I wish I had a big stick to whack all these so-called experts that are spouting total BS. What makes it worse is that some of these guys claim to be in the sound recording business and really don't understand the electronics or mathematics underlying the equipment they use.
The system I work on cost somewhere around 4 million, has 1500 channels, recording at various rates from 32k up to 192k. We calibrate it end-to-end and certify our measured data to +/- 0.2 db. So some twat on here claiming his system is good to 0.01 dB with no artifacts is really smoking something.
This Dolby system is really just trying to estimate the sampling artifacts and back them out of the digital data. The whole higher sampling rate thing is a smokescreen. As someone else pointed out, Dolby makes their money by licensing and they really want to convince consumers that they need this in their equipment.
The one permission that most people misunderstand is READ_PHONE_STATE, which is usually explained as the app wants to know if the phone is off-hook. It also happens to give the app the ability to see the phone numbers you're talking to, the IMEI unique identifier, etc. If your friend, who loves Chia-Pets calls you, your ads might suddenly start showing Chia-Pets.
This is a tough one, because you still have to trust the app, and if the app is targeted for Android 1.5 it will always request these permissions for compatibility reasons. Denying this permission seems to break most apps.
Because http isn't the only thing that uses DNS? We got pissed when a certain DNS authority redirected bad lookups to their own search engine for the same reason. The ISPs could take note of which customers are hitting the temporary servers and let them know. Some ISPs are quietly redirecting the lookups to their own server.
Not true.. There is a good reason, and its reducing your quantisation noise. You will increase your Signal to Noise ration by sampling higher, doing your processing and then filtering back down. In fact, doubling your sampling frequency gives you the equivalent snr increase of more than an extra bit. DSP cycles are dirt cheap in the recording stage, so why not?
Huh? Your sampling SNR is driven by the number of bits not the sampling rate. Higher sampling rates allow you to place your analog filters higher up, and then later digitally filter or decimate down to whatever sampling rate/cutoff you want..
You can't improve audio quality of *audible frequencies* by increasing resolution of the horizontal axis (sampling frequency) beyond a rate which surpasses the Nyquist frequency for human hearing.
Nyquist-Shannon notwithstanding, the range of human hearing is wider than 20kHz.
That article says nothing about the human hearing range other than making a reference to some other unproven hypothesis. The article does show that instruments produce frequencies will above 20kHz, which was never really in question.
Slashdot Mirror
Maybe thats the point, trying to give cinema's an advantage?
No, it's Dolby trying like hell to stay relevant and ensure that theaters and home products continue to license the technology from Dolby. Dolby makes their money off licensing their proprietary surround sound and compression algorithms for DVD players, TVs, etc. They don't produce much in the way of actual systems or hardware.
It's almost guaranteed that this will extend into the home market in a few years, because those manufacturers need a new gimmick to sell to the home consumer. Right now that gimmick is 3D. I also expect a new disk format to replace Blu-Ray to give consumers yet another reason to upgrade.
Still it's an interesting idea of getting away from pre-mixed sound channels, and encoding the info as objects and spatial locations. In theory with sufficient processing power, the player processes all that info into the right number of speaker channels for that system.
$4 Coke?! Fill me in with your discount method!
Move out of your expensive city. I'm twice as rich as someone 200 miles away in Chicago who earns the same salary as me, because everything costs twice as much up there (or more). Someone making my salary in New York City would probably be living in a cardboard box, but I live a comfortable middle class life here in Springfield.
You're probably exaggerating a bit. I moved out of an expensive area into a rural area. Housing is about half and I actually have some acreage to go with it, but realistically everything else is similar. Food, clothes, etc are all about the same. It's the other non tangibles that caused me to move, like living somewhere the kids can roam the neighborhood safely, zero traffic, etc.
No more unconstitutional than all the other procurement regulations that steer business to black, women owned businesses (often at significantly higher prices too).
As much as I'd rather see regulations that forced the govt to buy american made products, I know all too well how much paperwork and micromanagement such BS rules create. I'm tired of filling out the paperwork to prove that the monitor I'm buying is handicap accessible.
The cop doesn't have to tell you why he's arresting you before he cuffs you. So catch-22, you have no proof that he doesn't have probable cause.
Also to say they can't be detected by sonar is wrong - they can't be detected by sonar from behind or directly in front, since the boat would be moving faster than the sonar waves straight on going forward (unless the boat also absorbs sonar, that is).
For your claim to be true, it would have to be moving around 3300 mph. Not likely. Cavitation generates a huge amount of noise. For a "supercavitating" torpedo you don't care because the target can't outrun it or often react fast enough to make evasive maneuvers.
It would also be nice if the article made the distinction between cavitating and injecting air at the bow. Air injection at the bow has some beneficial benefit for drag (not called friction in water) and acoustic (isolates hull noise from the water), but it also generates its own broadband noise.
Maybe I'm just being silly, but if you also encrypt the message using standard means it will look identical to random noise, making it impossible to tell if you stumbled upon the correct current and voltage in the first place. Alternatively, Alice and Bob are able to detect your trying to intercept their communications, which means they can alter their behavior long before you stumble upon the correct settings.
What is stopping the observe from measuring the voltage at two points along the wire? The wire has some non-zero resistance so the difference in voltage between the points should yield the current flow. Basically you'd use the wire itself as the shunt resistor which would not be noticed.
(Nessus and eEye are good choices)
Both suck, especially eEye Retina for Linux. They always report findings on Redhat RHEL and most other stable distros because it just looks at the package major version numbers, without understanding that Redhat backports fixes. It's also somewhat limited in that it just tells you if you've got outdated packages and checks a few config settings. It will NOT tell you if you did something retarded like not scrubbing inputs to a sql query.
I highly agree with the advice of removing anything non-essential. If the service or executable isn't needed, remove the package entirely. Or better yet don't do a full OS install like most newbs. Take advantage of things like mounting filesystems read-only and/or no-exec if you don't need to write or exec from them. IPTables to limit ports and foreign IPs and ban2fail will cut down a lot of scanning noise.
This sounds like an awesome High School Project! Imagine the fun of learning to program an Arduino, then have it do something real in-space.
If you are on a network that already features Flame, you should probably just wipe and reinstall now.
Otherwise, that security update was probably Microsoft's emergency blacklisting of the signing keys that were used to make the Flame components pass as MS-signed software...
The MS description of the update said it was to update the CRL list, so yes it was basically blacklisting the compromised certificate.
While hydrogen sucks for density per volume at 5.6 MJ/liter versus gasoline at 34 MJ/liter, it's actually has good energy density by weight with 123 MJ/kg versus gasoline at 47 MJ/kg. The huge bulbous body of this thing is simply to store all the fuel. I suspect their main reason for going hydrogen was that it's easier to burn at high altitude and has a wide useable fuel/air ratio.
This low energy density per volume, is also the reason why it can't really be used for trucking. You'd take up half of the usable cargo room just to get the equivalent amount of energy as a normal diesel fill.
Uh, except these aren't nuclear weapons production facilities, supposedly. It is uranium enrichment for peaceful nuclear power.
If this "admission" were to be taken seriously I would expect Iran to be mighty pissed about it and want something worth millions (tens of millions?) to happen to the US, somewhere, somehow.
Actual intentions aside, Iran is still a very long way off from producing materials suitable for a nuclear bomb. The best they can do is 20% purity, you need around 90% pure materials for a nuclear explosive device. What they can produce right now is suitable for medical isotopes, possible reactors (are they actually building any plants?) or dirty bombs (conventional explosive to spread radioactive materials).
The goal of Stuxnet wasn't to cause damage, so much as to screw with the centrifuges speeds to prevent them from working efficiency and reduce the quality of the materials they generated. Brilliant ploy and implementation if you ask me, but I also happen to consider it an act of sabotage bordering on an act of war. If Iran shut down our power plants with a virus, we'd certainly consider it an act of war.
If only they would have the "Do Not Exploit With Malware" option turned on.
The browser or OS just needs to drop the packets with the evil bit set.
The federal DNC list has quite a few exceptions that my local state DNC list did not have, such as charities and political groups. (Go figure Congress would exempt themselves, eh?) Since our state has dropped their DNC program in favor of the federal list, I'm getting a lot of calls again. Plus the feds are pretty lax about enforcing complaints. Our state AG dept was actually pretty good about it and would fine organizations if they got complaints.
If the Apple Retina display is already beyond the point a human eye can resolve - what's more resolution going to get you?
You've been drinking the Apple cool-aid again. The resolution of human retina is higher than the 300 ppi claimed by Apple. It's closer to 477 ppi at 12 inches. Plus, how many people do you know that hold their iPhone 12" away from their face when doing anything but dialing?
I'd rather hold it a little closer and have the screen fill more of my field of view. More pixels euqals more real estate. Now if I can just convince the laptop makes to stop lowering their 15" screen resolutions to less than my phone's 3" display.
Good luck getting really accurate FEA results in turbulent flow as well. I do testing on large scale models to validate the predictions created using computational models. More often than not, the models are not very accurate and they end up 'adjusting' the models to match the actual results.
Analytic solutions are far superior to computed approximations. They are far easier to calculate--computers have made computed approximations far easier, but most of the time that doesn't mean that they're *easy*--only that they're now possible. Being able to obtain the answer in a small fraction of the time is still a big advantage.
Have fun with solving the Navier-Stokes equations then ;)
For most engineering problems, you don't need the exact answer. You just need a sufficiently accurate one. For NS, the trick was recognizing which terms were tiny and throwing them out. Who cares if your answer is 0.000001% off if it means reducing the equation down to 4 parts that can be easily solved on paper.
Moreover, at least in Florida and other states IIRC (from the time I used to work in Home Depot), the law typically mandates that you, the seller, must charge what is in the label.
You are wrong. The label on the product is an invitation for conducting a legal transaction or contract sale. It is not a binding commitment to sell at that price under and the store has no legal obligation to sell it to you at that price. When it gets rung up and the cashier gives you the total and you pay that total - that is the actual 'contract'. Contracts in most states are null and void if there was fraud involved by either party.
Sorry to be a whiny bitch, but the MiG-25 was actually designed to shoot down the XB-70 Valkyrie. The XB-70 project may appear to be a failure in that it only produced two prototypes at enormous cost, but it achieved what it was supposed to in that the USSR spent a fortune building a fleet of interceptors to shoot it down.
And now Al Queda does the same thing to use. They employ a few guys with piloting skills and box cutters and we spend trillions trying to hunt down their boss and securing our airports against a non-threat.
The next time I see a bunch of Oakland police union leaders screaming about not cutting anymore cops, I'm going to laugh in their face and show them this article.
The fact that ten cops have time to dick around on such a trivial thing indicates they have too many cops already.
Or, it means all the cops were scared for their jobs and were trying to win brownie points by finding the Chiefs kids phone.
As funny as it sounds, to reduce skin friction, you need to introduce turbulence - a very special type of turbulence. This has been the focus of quite a bit of research especially for aircraft and boats. This link (PDF warning) will explain how this is achieved.
That's not friction. That's drag.
Heinz shaped their bottles specifically so that the ketchup would be harder to get out, thereby adding to the illusion that their product was thicker and better.
I wish I had mod points.
I wish I had a big stick to whack all these so-called experts that are spouting total BS. What makes it worse is that some of these guys claim to be in the sound recording business and really don't understand the electronics or mathematics underlying the equipment they use.
The system I work on cost somewhere around 4 million, has 1500 channels, recording at various rates from 32k up to 192k. We calibrate it end-to-end and certify our measured data to +/- 0.2 db. So some twat on here claiming his system is good to 0.01 dB with no artifacts is really smoking something.
This Dolby system is really just trying to estimate the sampling artifacts and back them out of the digital data. The whole higher sampling rate thing is a smokescreen. As someone else pointed out, Dolby makes their money by licensing and they really want to convince consumers that they need this in their equipment.
I agree.
The one permission that most people misunderstand is READ_PHONE_STATE, which is usually explained as the app wants to know if the phone is off-hook. It also happens to give the app the ability to see the phone numbers you're talking to, the IMEI unique identifier, etc. If your friend, who loves Chia-Pets calls you, your ads might suddenly start showing Chia-Pets.
This is a tough one, because you still have to trust the app, and if the app is targeted for Android 1.5 it will always request these permissions for compatibility reasons. Denying this permission seems to break most apps.
Because http isn't the only thing that uses DNS? We got pissed when a certain DNS authority redirected bad lookups to their own search engine for the same reason. The ISPs could take note of which customers are hitting the temporary servers and let them know. Some ISPs are quietly redirecting the lookups to their own server.
Not true.. There is a good reason, and its reducing your quantisation noise. You will increase your Signal to Noise ration by sampling higher, doing your processing and then filtering back down. In fact, doubling your sampling frequency gives you the equivalent snr increase of more than an extra bit. DSP cycles are dirt cheap in the recording stage, so why not?
Huh? Your sampling SNR is driven by the number of bits not the sampling rate. Higher sampling rates allow you to place your analog filters higher up, and then later digitally filter or decimate down to whatever sampling rate/cutoff you want..
You can't improve audio quality of *audible frequencies* by increasing resolution of the horizontal axis (sampling frequency) beyond a rate which surpasses the Nyquist frequency for human hearing.
Nyquist-Shannon notwithstanding, the range of human hearing is wider than 20kHz.
http://www.cco.caltech.edu/~boyk/spectra/spectra.htm (a properly conducted experiment)
That article says nothing about the human hearing range other than making a reference to some other unproven hypothesis. The article does show that instruments produce frequencies will above 20kHz, which was never really in question.