Your logic that $75 trillion is more than the entire music industry has made in recorded history is irrelevant, we are the MAFIAA, you will submit to our will.
You mean the power companies that primarily use AC distribution, and only use HVDC for limited applications where the reactive losses of an AC circuit (e.g. a lengthy underwater cable) are high enough to offset the significantly higher costs and lower availability of an HVDC circuit? Are those the power companies to which you're referring?
Look slightly farther down that Wikipedia page at the "disadvantages", and you'll see why it's not used much. Tesla/Westinghouse was correct about AC distribution, Edison was correct that DC is better for many local applications, but he didn't see (or ignored) it's limitations.
Initial tests show that the system in Bath emits approximately half as much energy as heat than the previous AC powered system while running much faster.
So, they run faster and produce much less heat, which means they're not running the same CPUs, etc. as before. Therefore, it's an apples-to-oranges comparison.
I have no doubt that a single large DC power supply can power multiple systems with better efficiency, especially if the AC/DC power supply is located in a separate room or outdoors where it can be cooled without contributing heat to the room containing the computers. Of course, that's not necessarily desirable in cold environments, but that's a separate issue.
AC is used for power distribution because it's far more efficient for distributing power over a distance. Even a few mi/km, DC loses are significantly worse than high voltage AC. AC is far easier and more efficient to transform to/from high voltages, making high-voltage AC far more efficient than high voltage DC for distribution. DC isn't practical until you get to the final few hundred feet.
For any applied (e.g. programming, engineering, etc) computer related field, what is necessary are courses in advanced algebra (e.g Algebra 2), logic (algebraic and boolean), and a basic grasp of calculus (e.g. Intro to calculus or calculus 1). Those should be sufficient math courses for an MS or BS degree in computer science or computer engineering degree.
If you pursue a PhD in computer science, then more advanced courses in logic, calculus, differential equations, number theory, and numerical analysis are appropriate, and should be required. Those courses should be optional for students pursuing an MS/BS.
No, you're thinking of the textbook review board of the Texas Board of Education, which has nothing to do with universities in Texas. They only set the standards for the free textbooks in public schools K-12.
That's potentially worse. Not only is the cost to wire a plane outrageous, but allowing people to plug into Ethernet adds yet another way to attack or interfere with the plane's electrical system. Yes, there are ways to mitigate the problem, as evidenced by some planes having power ports and/or headphone jacks, but it's still something that would need to be carefully isolated. It also doesn't do anything to prevent a Wi-Fi device from transmitting (either normal polling for an available network or maliciously transmitting packets), which means you have to defend the plane against both wired and wireless attacks.
That's still a local exploit. It's a drive-by, but you still have to get the user to visit a malicious website. It's not something that can be initiated and exploited over the network, a local user has to initiate the action.
It's not $35k for a Chrome exploit, it's $20k. $20k from Google, $0k from Tipping Point if is falls on day 1, $10k each from Google and Tipping Point if it falls on days 2 or 3.
Both are accurate. The software running on the machines was frozen 2 weeks ago. However, to win the prize, the vulnerability must not have been patched in the latest release. That does not necessarily mean that the exploit works on the latest release, it could be that the vulnerability is still there, but the exploit might need some changes to work correctly. The way it was done this year is much more realistic since most users don't update immediately, and because an unpatched vulnerability that requires changes to the exploit is still an exploitable vulnerability. The hackers don't have to try to update their exploit at the last minute, they have 2 weeks to make sure it works correctly on the configuration to be tested. They only get 'screwed' if a specific vulnerability their exploit used was patched by the vendor before the start of the contest (or if it was a vulnerability that had already been reported to the vendor, even though it remained unpatched).
Actually, no Chrome did not get to use the auto-update mechanism. None of the sources you cited say what you think they said. The software configuration was frozen 2 weeks before the contest, and Chrome 9 was the version to be tested. However, by releasing patches in the past 2 weeks, Apple, Mozilla, and Google ensured that any exploit that was fixed in the latest versions would not be awarded the prize, it would instead go to the first to exploit an unpatched vulnerability.
The reason the hacker who was scheduled to attack Chrome didn't show is because he told Google about the vulnerability 1-2 days before he found out he was selected to have the first attempt at attacking Chrome in the contest. Since he already reported the vulnerability, that vulnerability does not qualify for the contest. He didn't have another successful exploit of Chrome ready, so he didn't go to the contest. Had he waited a couple days, he would have known he was first up to attack Chrome, wouldn't have reported the vulnerability, and could have walked away with $20k.
Same story every year, Windows goes down. Every year, IE goes down. Every year, Safari goes down. Every year, Firefox goes down. Every year, Chrome survives (would have gone down this year, except the hacker gave Google the exploit shortly before Pwn2Own).
Now we can stop the platform trolling pissing match.
Actually, a well prepared hacker will go in with exploits for Mac, Windows, and possibly other systems (iPhone, Android, etc.). The order in which you get to test your exploit is determined randomly, the more platforms you're going after, the better your odds of being one of the first on some platform, therefore, the better your odds of winning a prize.
It's not $15k to the first to fall, it's $15k for a Mac exploit on day 1, another $15k for a Windows exploit on day 1, and separate prizes for iPhone, Android, and other phone exploits. The rules are relaxed, and the prizes are lowered on days 2 and 3. A chrome exploit is worth $20 on any day of the contest this year. Who the money comes from changes from day 1 to days 2&3, but it's $20k on each day because Google is putting up at least half of the $20k.
MM/DD makes sense, and is probably the origin of MM/DD/YY (which does not make sense otherwise). Unfortunately, all of the formats that do make sense are tougher to interpret at pi day, etc.
However, unless I'm filling in a form that expects mm/dd/yy(yy), I use yyyy-mm-dd (or for some international usage dd-mon-yyyy) so there is no confusion.
The problem isn't just that the Samsung is more expensive, it's that it's a lot more expensive. Even the 7" Galaxy tab is priced well above the 9.7" iPad/iPad2, and the 10.1" version was expected to be even more expensive.
Slashdot Mirror
As many bugs as they have, it could put a dent in their profits.
Your logic that $75 trillion is more than the entire music industry has made in recorded history is irrelevant, we are the MAFIAA, you will submit to our will.
You mean the power companies that primarily use AC distribution, and only use HVDC for limited applications where the reactive losses of an AC circuit (e.g. a lengthy underwater cable) are high enough to offset the significantly higher costs and lower availability of an HVDC circuit? Are those the power companies to which you're referring?
Look slightly farther down that Wikipedia page at the "disadvantages", and you'll see why it's not used much. Tesla/Westinghouse was correct about AC distribution, Edison was correct that DC is better for many local applications, but he didn't see (or ignored) it's limitations.
So, they run faster and produce much less heat, which means they're not running the same CPUs, etc. as before. Therefore, it's an apples-to-oranges comparison.
I have no doubt that a single large DC power supply can power multiple systems with better efficiency, especially if the AC/DC power supply is located in a separate room or outdoors where it can be cooled without contributing heat to the room containing the computers. Of course, that's not necessarily desirable in cold environments, but that's a separate issue.
AC is used for power distribution because it's far more efficient for distributing power over a distance. Even a few mi/km, DC loses are significantly worse than high voltage AC. AC is far easier and more efficient to transform to/from high voltages, making high-voltage AC far more efficient than high voltage DC for distribution. DC isn't practical until you get to the final few hundred feet.
For any applied (e.g. programming, engineering, etc) computer related field, what is necessary are courses in advanced algebra (e.g Algebra 2), logic (algebraic and boolean), and a basic grasp of calculus (e.g. Intro to calculus or calculus 1). Those should be sufficient math courses for an MS or BS degree in computer science or computer engineering degree.
If you pursue a PhD in computer science, then more advanced courses in logic, calculus, differential equations, number theory, and numerical analysis are appropriate, and should be required. Those courses should be optional for students pursuing an MS/BS.
JMHO. But it's the correct opinion. ;)
No, you're thinking of the textbook review board of the Texas Board of Education, which has nothing to do with universities in Texas. They only set the standards for the free textbooks in public schools K-12.
That's potentially worse. Not only is the cost to wire a plane outrageous, but allowing people to plug into Ethernet adds yet another way to attack or interfere with the plane's electrical system. Yes, there are ways to mitigate the problem, as evidenced by some planes having power ports and/or headphone jacks, but it's still something that would need to be carefully isolated. It also doesn't do anything to prevent a Wi-Fi device from transmitting (either normal polling for an available network or maliciously transmitting packets), which means you have to defend the plane against both wired and wireless attacks.
The Tao of math: The numbers you can count are not the real numbers.
Nor are they imaginary numbers.
That's still a local exploit. It's a drive-by, but you still have to get the user to visit a malicious website. It's not something that can be initiated and exploited over the network, a local user has to initiate the action.
It's not $35k for a Chrome exploit, it's $20k. $20k from Google, $0k from Tipping Point if is falls on day 1, $10k each from Google and Tipping Point if it falls on days 2 or 3.
Both are accurate. The software running on the machines was frozen 2 weeks ago. However, to win the prize, the vulnerability must not have been patched in the latest release. That does not necessarily mean that the exploit works on the latest release, it could be that the vulnerability is still there, but the exploit might need some changes to work correctly. The way it was done this year is much more realistic since most users don't update immediately, and because an unpatched vulnerability that requires changes to the exploit is still an exploitable vulnerability. The hackers don't have to try to update their exploit at the last minute, they have 2 weeks to make sure it works correctly on the configuration to be tested. They only get 'screwed' if a specific vulnerability their exploit used was patched by the vendor before the start of the contest (or if it was a vulnerability that had already been reported to the vendor, even though it remained unpatched).
Actually, no Chrome did not get to use the auto-update mechanism. None of the sources you cited say what you think they said. The software configuration was frozen 2 weeks before the contest, and Chrome 9 was the version to be tested. However, by releasing patches in the past 2 weeks, Apple, Mozilla, and Google ensured that any exploit that was fixed in the latest versions would not be awarded the prize, it would instead go to the first to exploit an unpatched vulnerability.
The reason the hacker who was scheduled to attack Chrome didn't show is because he told Google about the vulnerability 1-2 days before he found out he was selected to have the first attempt at attacking Chrome in the contest. Since he already reported the vulnerability, that vulnerability does not qualify for the contest. He didn't have another successful exploit of Chrome ready, so he didn't go to the contest. Had he waited a couple days, he would have known he was first up to attack Chrome, wouldn't have reported the vulnerability, and could have walked away with $20k.
Same story every year, Windows goes down. Every year, IE goes down. Every year, Safari goes down. Every year, Firefox goes down. Every year, Chrome survives (would have gone down this year, except the hacker gave Google the exploit shortly before Pwn2Own).
Now we can stop the platform trolling pissing match.
Actually, a well prepared hacker will go in with exploits for Mac, Windows, and possibly other systems (iPhone, Android, etc.). The order in which you get to test your exploit is determined randomly, the more platforms you're going after, the better your odds of being one of the first on some platform, therefore, the better your odds of winning a prize.
It's not $15k to the first to fall, it's $15k for a Mac exploit on day 1, another $15k for a Windows exploit on day 1, and separate prizes for iPhone, Android, and other phone exploits. The rules are relaxed, and the prizes are lowered on days 2 and 3. A chrome exploit is worth $20 on any day of the contest this year. Who the money comes from changes from day 1 to days 2&3, but it's $20k on each day because Google is putting up at least half of the $20k.
You're a Ho?
Score++
And e is much easier to remember to 9 decimal places.
The ISO has a standard for just about everything.
No, it's 27-1, i.e. January 27th.
MM/DD makes sense, and is probably the origin of MM/DD/YY (which does not make sense otherwise). Unfortunately, all of the formats that do make sense are tougher to interpret at pi day, etc.
However, unless I'm filling in a form that expects mm/dd/yy(yy), I use yyyy-mm-dd (or for some international usage dd-mon-yyyy) so there is no confusion.
Ok, it's actually pi rounded to 31 decimals, played in the round.
As a person who has fixed more relative's and friend's computers than I care to mention I have to say I think we need a union.
Or you could just say "no, take it to xxxx shop", or "Gladly, my rates are $xxx per hour."
The problem isn't just that the Samsung is more expensive, it's that it's a lot more expensive. Even the 7" Galaxy tab is priced well above the 9.7" iPad/iPad2, and the 10.1" version was expected to be even more expensive.
No, the Brits did that long ago.