"No one in their right mind would trust 128 bit encryption over a wireless network"
No one in their right mind makes absolute statements. Yes, I know. This sentence is a paradox. Or is it?
The number of bits is not the problem. The (a) problem with WEP is that it contains weaknesses which allow shortcuts that take less time than an exhaustive search of the keyspace would take. The effective strength of 128 bit WEP is regarded as much weaker than 128 bit AES encryption.
... if someone uses a zero-day exploit to install a rootkit.
If you want to be truly paranoid about intrusion detection, occasionally boot up *OUTSIDE* the os and run tripwire from known, trusted read-only media.
I disagree. Engineering journals are teeming with mathematical demonstrations and derivations, but very little that would qualify as a mathematical proof.
As mathematicians view the concept, proof implies a level of detail and rigor which engineers generally find unnecessary and detrimental.
Engineers design things, math is a tool.
An engineer puts enough energy into the mathematics to make it unlikely that his equations are wrong. The required unlikelihood of error depends on ease of testing, the consequence of failure, etc.
Mathematicians extend math as an end to itself. They are not making a product. The proof *is* the product. Appropriate focus is given to that product. In the world of mathematics, no manner of prototype will substitute for a proof.
I believe you can declare a java method or class as "final". This optional behaviour is like C++'s default behaviour.
BTW. I looked at the "shootout" article when it first reared its ugly head. I recall the Python code looking like it had been written by someone who had read 3 chapters of "Teach Yourself * in 21 Days". Utter crap.
"Asperger Syndrome or (Asperger's Disorder) is a neurobiological disorder named for a Viennese physician, Hans Asperger, who in 1944 published a paper which described a pattern of behaviors in several young boys who had normal intelligence and language development, but who also exhibited autistic-like behaviors and marked deficiencies in social and communication skills. "
By Barbara L. Kirby Founder of the OASIS Web site (www.aspergersyndrome.org) Co-author of THE OASIS GUIDE TO ASPERGER SYNDROME (Crown, 2001)
Re:Or maybe they do pass emissions
on
Hack Your Car
·
· Score: 1
The question is whether emissions are increased, not whether the car would still pass emissions testing.
Are you a moron that a pass-fail test is a good measurement of quantity?
Or maybe you're a psychopath who cares nothing for those around you,so long as you don't get punished.
They will sell your surfing habits to the highest bidder. You can't complain. After all, the policy was clearly stated in the item 53, subparagraph XIV of the click-thru agreement.
The point may be moot. Even if the processing was sped up 100x for your pulse length, it would probably still be too slow for radar pulse processing using general purpose hardware.
if I am looking for a signal of N samples in a received data stream of M samples, I have to do M*N multiply and add operations to get my correlation.
No, you don't.
You can use FFTs for correlation. Read up on overlap-add, or overlap-scrap filtering. Note that correlation is really just a filtering operation by another name.
This can give you immense performance gains. The scalability difference between traditional correlation and overlap-scrap is analogous to the scalability improvement that comes from going from a DFT to FFT.
A rule of thumb for the efficiency crossover point for FFTs is N==64.
In your example, you have 100 samples/chirp. This would lead you to an FFT size of 256 or 512 ('why' is an excercise left to reader). This is large enough to make O( Nlog(N) ) considerably better than O(N**2).
There is a basic problem with open source
software [] there is nothing to stop someone
sneaking in some (C) code, then later []
sueing everyone for breach of copyright.
How is this different from any other public forum?
Suppose I posted copyrighted songs on a website. The record labels could not sue the ISP, unless the ISP was unresponsive or negligent. The offending files would be identified and removed. The RIAA might then sue me for putting them there in the first place, but IMHO they'd have a right to do so.
The nature of the copyright infringement in the music example is very similar to the alleged SCO material. Individuals contributing content to a larger body of work are each responsible for their own contributions.
The difference is that SCO is saying, "There's copyrighted stuff somewhere on your ISP. Everyone who's ever seen your website owes us a hundred bucks, or we'll shut it down. Don't worry your pretty little head about the details. Trust us. There's a copyright infringement in there somewhere."
The reason that SCO has not disclosed the nature of offending code is that they know their case would immediately crumble. Any code that they could stake a claim to would be rewritten a few hours after disclosure.
If there is copyrighted code in the kernel, then whomever put it there is legally responsible. If they did it as part of their duties while working at IBM, then IBM may also be culpable. But NOT every person who ever used Linux!!!
Stick with what you know. If you've never used anything besides Debian, don't teach the class using RedHat. The slight variations might make you seem uneasy. Remember, they can smell fear:)
Don't bog yourself down in installation. A coworker took a Linux class where they did nothing but install for the first two days! If at all possible, have the computers pre-installed before day 1. If some of the kids have prior knowledge, they could assist before the week starts.
As far as which features to learn, ask yourself, "what excites me about *nix". Steer the course towards the answer. You will have to start with the basics no matter what. If you tailor the basics toward a goal, particularly one you enjoy, you're much more likely to inspire somebody.
"You can just use a soundcard if that's all you have. It will get you 44 kHz of bandwidth. Then you'd need a rf tuner in front of that."
...
Clearly more equipment than this is needed to deal with the 107mhz FM band
I think you are confusing bandwidth with center frequency. FM radio stations are spaced at center frequencies 200 kHz apart e.g. 107.1, 107.3
So the maximum bandwidth they could possibly use is 200 kHz minus the transition bandwidth. I don't know what this is off the top of my head, but I'd guess it's around 50kHz.
You might be able to use 44 kHz of bandwidth to receive an FM radio station, but it wouldn't sound very good, since the dynamic range would be severely clipped.
AM radio stations are spaced 10kHz apart, which would fit quite handily into 44 kHz.
... that's why you lost your data. It annoys me to no end when people assume a cause for a problem and begin to state it as fact without verification or fact.
Is it possible that there is a bug in reiserfs? Sure. I just don't trust anecdotal evidence from some dood on/.
That'd be a real kick in the family Joules. A million people at once saying " Cool! umm... " (say it fast and remember your physics)
You could build this out of ordinary car audio capacitors... about 12 million of them. At $100 each, a mere $1.2 billion would suffice. Get out the platinum card and head to Best Buy.
Sorry, Moby. Your latest album isn't up to your standards. That's why the sales aren't good. Start making music again for yourself. If you try to write music to repeat your 'Play' success, you'll just come off as a hack.
You're better than '18'. Just accept that you laid an egg and move on.
Slashdot Mirror
violators of GPL are violators of Sarbanes-Oxley.
solution: don't violate the GPL.
"No one in their right mind would trust 128 bit encryption over a wireless network"
No one in their right mind makes absolute statements. Yes, I know. This sentence is a paradox. Or is it?
The number of bits is not the problem. The (a) problem with WEP is that it contains weaknesses which allow shortcuts that take less time than an exhaustive search of the keyspace would take. The effective strength of 128 bit WEP is regarded as much weaker than 128 bit AES encryption.
With a non-alerting burglar cam, you get a picture of the guy who stole your TV, your jewelry, your laptop, ...
With an alerting burglar cam/alarm. The guy sees that he's been spotted, freaks out, and leaves. You keep your stuff.
I guess your choice depends on your priorities.
... if someone uses a zero-day exploit to install a rootkit.
If you want to be truly paranoid about intrusion detection, occasionally boot up *OUTSIDE* the os and run tripwire from known, trusted read-only media.
"All real engineers are scientists"
I disagree. Engineering journals are teeming with mathematical demonstrations and derivations, but very little that would qualify as a mathematical proof.
As mathematicians view the concept, proof implies a level of detail and rigor which engineers generally find unnecessary and detrimental.
Engineers design things, math is a tool.
An engineer puts enough energy into the mathematics to make it unlikely that his equations are wrong. The required unlikelihood of error depends on ease of testing, the consequence of failure, etc.
Mathematicians extend math as an end to itself. They are not making a product. The proof *is* the product. Appropriate focus is given to that product. In the world of mathematics, no manner of prototype will substitute for a proof.
Definitely.
And be sure to get lots of goodies from the octave-forge project on sourceforge.net
If you learn how and why everything in octave works, you'll be a damn fine engineer.
I'm somewhat embarassed to say I've kept a log of every tank of gas in the last 3 years.
mean mpg = 21.5
std deviation (per tank) = 2.4 mpg
min = 17.8
max = 27.8
EPA estimates are 20,27.
I drive mostly in the city with a lead foot. So the numbers are close in my case.
I believe you can declare a java method or class as "final". This optional behaviour is like C++'s default behaviour.
BTW. I looked at the "shootout" article when it first reared its ugly head. I recall the Python code looking like it had been written by someone who had read 3 chapters of "Teach Yourself * in 21 Days". Utter crap.
"Asperger Syndrome or (Asperger's Disorder) is a neurobiological disorder named for a Viennese physician, Hans Asperger, who in 1944 published a paper which described a pattern of behaviors in several young boys who had normal intelligence and language development, but who also exhibited autistic-like behaviors and marked deficiencies in social and communication skills. "
By Barbara L. Kirby
Founder of the OASIS Web site (www.aspergersyndrome.org)
Co-author of THE OASIS GUIDE TO ASPERGER SYNDROME (Crown, 2001)
The question is whether emissions are increased, not whether the car would still pass emissions testing.
,so long as you don't get punished.
Are you a moron that a pass-fail test is a good measurement of quantity?
Or maybe you're a psychopath who cares nothing for those around you
Conspiracy theory of the day:
They will sell your surfing habits to the highest bidder. You can't complain. After all, the policy was clearly stated in the item 53, subparagraph XIV of the click-thru agreement.
It'd do both.
...
However
The point may be moot. Even if the processing was sped up 100x for your pulse length, it would probably still be too slow for radar pulse processing using general purpose hardware.
if I am looking for a signal of N samples in a received data stream of M samples, I have to do M*N multiply and add operations to get my correlation.
No, you don't.
You can use FFTs for correlation. Read up on overlap-add, or overlap-scrap filtering. Note that correlation is really just a filtering operation by another name.
This can give you immense performance gains. The scalability difference between traditional correlation and overlap-scrap is analogous to the scalability improvement that comes from going from a DFT to FFT.
A rule of thumb for the efficiency crossover point for FFTs is N==64.
In your example, you have 100 samples/chirp. This would lead you to an FFT size of 256 or 512 ('why' is an excercise left to reader). This is large enough to make O( Nlog(N) ) considerably better than O(N**2).
Hmmm, now back to work.
$38e6 / 300 servers = 1.2667e+05 $/server
Methinks the price tag includes a lot more than the hardware costs.
The comparison with the VT supercomputer is almost certainly not apples to apples (so to speak)
I politely listen for a couple of seconds, asking some pertinent questions and then say, "Oops! Hold on for just a moment."
They usually hang on the line for at least a minute or two before they give up and move on.
I enjoy wasting more of their time that they have mine.
Here's an idea -- Telemarketing TARPITS!!! Talk slower and slower until they just hang up and call someone else.
When I read this news story a couple days ago, I was trying to remember the book in which I had read this.
I thought it was an Encyclopedia Brown mystery (my fav series when I was wee)
Suppose I posted copyrighted songs on a website. The record labels could not sue the ISP, unless the ISP was unresponsive or negligent. The offending files would be identified and removed. The RIAA might then sue me for putting them there in the first place, but IMHO they'd have a right to do so.
The nature of the copyright infringement in the music example is very similar to the alleged SCO material. Individuals contributing content to a larger body of work are each responsible for their own contributions.
The difference is that SCO is saying, "There's copyrighted stuff somewhere on your ISP. Everyone who's ever seen your website owes us a hundred bucks, or we'll shut it down. Don't worry your pretty little head about the details. Trust us. There's a copyright infringement in there somewhere."
The reason that SCO has not disclosed the nature of offending code is that they know their case would immediately crumble. Any code that they could stake a claim to would be rewritten a few hours after disclosure.
If there is copyrighted code in the kernel, then whomever put it there is legally responsible. If they did it as part of their duties while working at IBM, then IBM may also be culpable. But NOT every person who ever used Linux!!!
"Will the recording process suffer due to the hurry?"
Compared to bootlegs from a recorder in the shirt pocket? I don't think so.
They'd just use the output from the sound board.
Stick with what you know. If you've never used anything besides Debian, don't teach the class using RedHat. The slight variations might make you seem uneasy. Remember, they can smell fear :)
Don't bog yourself down in installation. A coworker took a Linux class where they did nothing but install for the first two days! If at all possible, have the computers pre-installed before day 1. If some of the kids have prior knowledge, they could assist before the week starts.
As far as which features to learn, ask yourself, "what excites me about *nix". Steer the course towards the answer. You will have to start with the basics no matter what. If you tailor the basics toward a goal, particularly one you enjoy, you're much more likely to inspire somebody.
"A long trailer with lots of spoilers"
Sounds like a NASCARedneck fixed hisself a mobile home that's ultra-stable on the freeway.
...
Clearly more equipment than this is needed to deal with the 107mhz FM band
I think you are confusing bandwidth with center frequency. FM radio stations are spaced at center frequencies 200 kHz apart e.g. 107.1, 107.3
So the maximum bandwidth they could possibly use is 200 kHz minus the transition bandwidth. I don't know what this is off the top of my head, but I'd guess it's around 50kHz.
You might be able to use 44 kHz of bandwidth to receive an FM radio station, but it wouldn't sound very good, since the dynamic range would be severely clipped.
AM radio stations are spaced 10kHz apart, which would fit quite handily into 44 kHz.
... that's why you lost your data. It annoys me to no end when people assume a cause for a problem and begin to state it as fact without verification or fact.
/.
Is it possible that there is a bug in reiserfs? Sure. I just don't trust anecdotal evidence from some dood on
That'd be a real kick in the family Joules. A million people at once saying ... "
... about 12 million of them. At $100 each, a mere $1.2 billion would suffice. Get out the platinum card and head to Best Buy.
" Cool! umm
(say it fast and remember your physics)
You could build this out of ordinary car audio capacitors
Sorry, Moby. Your latest album isn't up to your standards. That's why the sales aren't good. Start making music again for yourself. If you try to write music to repeat your 'Play' success, you'll just come off as a hack.
You're better than '18'. Just accept that you laid an egg and move on.