I'm not a radar engineer (But I have taken some classes on radar principles). I don't see any mention of what frequencies it was, which I'm sure would rule it out as a radar. But I see a few ways they could eliminate as a radar.
The biggest indicator is likely the shape of the pulse. Even in the best square wave there's a rise time and fall time (the time it takes to go from 0 to 1). However there won't be the same shape when its just sliding frequencies. If you graphed amplitude vs time for thin cross sections of frequencies and then lined up the cross sections for the radar emitter you'd probably see some type of parabola thats uniform in the center frequencies but truncated on the ends where the power went on and off. However if this came from a distant galaxy, every frequency would have the same exact shape of amplitude vs time once you remove the refraction delay.
Secondly being that this is a very large antenna, 210m (large aperture), it is high gain. That means high frequencies must be right in front of the antenna, the lower the frequency the further it can be from its center. At microwave frequency of 2.5ghz (assuming the antenna is circular) this antenna would have a 0.04degree beamwidth. Even down to 30Mhz that'd only be 3.3degrees. So basically this object would have to be right above the antenna or a reflection off something right above it.
Thirdly you can't receive while transmitting (You'll burn out the receiver at the powers the transmitter is operating at). If the pulse was 5ms, and factoring the speed of light that means this radar would be blind to anything closer then 750Km. (c*5ms/2.. its divided by two for roundtrip time). That really pigeonholes its use as a radar. I'm sure there's things that use long pulses, but not for typical air traffic control.
Now I'm ignoring the saturation, its quite likely they can't really analyze the shape of the pulse. It's quite possible that their data is useless for analysis if its oversaturated.
Permadeath should be inevitable (there's no escaping old age) Permadeath shouldn't be the end (kids get your wealth) PK permadeaths should have consequences (justice)
It shouldn't be a godlike character training up, but an evolutionary process where you burn through one character and move to next. If the kid isn't a total newbie again when they start again, it should be fun to die and start your next character.
For example, everytime you gain xp, your kids gain 1/3 xp (but 2 parents) except you have no say in their class or how they train their skills. Problems come if this isn't a RP game, when a male character dies and all his children are females, so maybe some things they can choose at time of character-switch like gender.
If I get stuck at 10,000 feet hanging by a ribbon... the last thing I want to rescue me is something with spinning blades overhead. That'd make a very quick end to an expensive project.
The loss of mobility would make it not worth using. Once a firefight starts, its all about cover and concealment... not armor. Kevlar helmets aren't meant to stop a bullet, they're meant to deflect a stray one. The robot would not be able to stop multiple rpg hits and it'd be more likely to take a hit because you'd be unable to get into the prone position.
Frankly I'd rather be prone behind some cover then standing up with thick armor.
A mech would be better suited to increase load capacity as another poster said.. something attached to legs only, that can help them carry another 90 lbs. Better yet would be an independent robot mule, to carry ammo.
every (or, nearly every) operation you can do on a computer can be thought of as having an input state, an operation on that input, and an output state. Backtracking, therefore, is as simple as coming up with the reverse of whatever the operation was, giving you the input state once more.
after execution of A=B the state is A is 1, b is 1... tell me what was A before execution. Clobbering of data is not reversible and is very common (as in everytime there's an assignment operator used). Even things like (A+B) which sound reversible at first aren't quite once you consider that the flags are clobbered (when'd the overflow flag get set?)
It's easy to look at this and say the fines should be proportional to the consequences. But you also have to consider the rewards. The fines always have to be heavier then the amount earned by breaking the rule.
Suppose hypothetically that a person could save $1000 by jaywalking, that means the fine for jaywalking must be at least $1000 or soon everyone will be doing it. But that doesn't mean we consider jaywalking a serious offense still, just thats how much it costs to mitigate it.
Compare this to a TV show, they make big money for breaking the rules, under old rules they were encouraged to break rules because they'd make more then the fine costs. It doesn't mean it's considered a huge crime that it has such a big fine. It just means they want to discourage it.
Gankutsuou is a new series (about halfway through its first and only season) with high ratings. It WILL be licensed. It's a retelling of the Count of the Monte Cristo.. certainly not niche there.
Kimi Ga Nozomu Eien has received a lot of awards among the non-Japanese anime community. Guess what, licensers look at the popularity of fansubs, and it will be picked up. Check out anidb if you don't believe me about its popularity, probably biggest interactive DB on net for anime (~20000 EP's). 8.57 (1324 votes) for Kimi, for comparison Cowboy Bebop (an extremely popular series released in US and on TV) is 8.73 (1922 votes)
The further they try to predict the larger the error margin. That means they have to include that error because it's just as likely it can go a different way. So when they plot it's course instead of a line, it becomes a cone (where the asteroid can follow a line anywhere in that cone). When they come up with 1 in 62 chance that means the earth takes up 1/62 of the cross section of that cone (well its more complex then this, since I doubt they would use a linear distribution but I'm simplifying it so you can understand how they get these numbers).
As they get more measurements (and spend more time numbercrunching existing ones) they'll have less of an error margin, the cone becomes tighter and tighter (until its almost just a line). So they'll either increase the chance (because the earth is taking up a larger portion of that smaller cone) or they'll eliminate it (because the earth is now outside of the new cone) when they get more data.
My concern is the " exposing children to adult sexual activity, including pornographic movies and photographs" Does that include the vast majority of R rated movies? Does that mean everyone that watched the superbowl halftime show was sexually abused? I think almost all kids under 16 have seen an R rated movie that depicted a sexual act.
Psh just you wait till the first round of people are snipped and the media gets a hold of the story. A couple deaths and you'll be able to convince a couple thousand people they're next on the list.
With Windows/IE, you can do almost anything and configure it almost completely (within its limits, of course) through the mouse and the menus.
You mean like in IE how you can configure it to be able to download more then 2 files at once? That's right you can use the mouse and menus to go through the registry to fix that right? http://www.tweakxp.com/tweak764.aspx
or set the default download directory... oops no registry http://www.tweakxp.com/tweak128.aspx
changing mailto: to load another mail program.. registry again http://www.tweakxp.com/tweak734.aspx
You try to make it sound like its a big deal to install firefox, it's not any more complex then installing any other windows application you download off net. In the time it takes you to update IE to a stable state, you could already have downloaded, installed, and be adapted to firefox (that's because there basically is no adaption time).
Your rant seems aimed at Linux and not at Mozilla... because there's no reason for the average user (yes even the average slashdot user) to recompile or muck around with scripting (XPI) in firefox. Furthermore Mozilla and Linux have nothing to do with eachother, why you arbitrarily lumped them together is a little odd. The common denominator being that they both compete with Microsoft I guess. While you address only one side of your grouping it makes the argument sound akin to "I don't like cats and dogs... they leave droppings on the lawn, bark at night and they attack the mailman... and that is why I don't like cats and dogs"
Very true public servants should be under surveillance by the public. However the problem comes in once you realize that its not just the cops in police stations.
"Hey Tommy, we saw you on Cop-Cam, are you squeeling on us?" or "You wouldn't believe who I saw on Cop-cam, Linda was all battered up with her clothes in shreds"
I think cameras are appropriate in public places because they're *gasp* public. But if you make police stations into a TV-show how can a victim report a crime without giving up that privacy.
Should we also web-cast all 911 calls so we can be assured the operators are doing their job right?
Now I agree that politicians should have no privacy while performing government duties. Unlike cops they don't have a special obligation to individuals.
This is NOT 1984! 1984 is government cameras in your home.
No it's not, the darkside of 1984 is the PROPOGANDA not the surveillance.
"Nineteen Eighty-Four (sometimes 1984) is a darkly satirical political novel and love story by George Orwell. The story takes place in a nightmarish dystopia, in which an ever surveillant State enforces perfect conformity among citizens through indoctrination, fear, lies and ruthless punishment." -Wikipedia
The counter is that the surveillance makes it easier to "deal" with dissidents but so does a police department. Should we remove police departments because they may do evil? I love this double standard on/. when they try to argue that P2P can be used for good.
People may as well be saying "OMG the schools are funded by the government to teach our children??! 1984!"
IANAG but I don't think you can truly compare golf on one day to another since the conditions will change. I think even I can beat Tiger Woods score on a hurricane day;)
In competitive games amateur does not mean necessarily a reference to skill level. Amateur simply means not professional (makes money through the game).
Think amateur golf tournaments, they may be amateurs, but they can still kick most peoples' ass.
It's not a good idea to microwave an object without something to absorb the microwaves (typically water in the food you're cooking). If nothing absorbs the microwaves they may be reflected and damage the magnetron. If you want to destroy RFID's in clothing, you can add a cup of water beside it or something similar while microwaving.
If you're microwaving water beware of superheating
With regard to electronics, RFID's can be remotely killed without the use of a microwave by sending a specific signal. This allows you to target one RFID but not the one adjacent to it. You can be assured there will be consumer devices to kill RFID's. It's a hobby-project I'd like to pursue in future but there's no point until it becomes more standard.
Machine learning? how bout user learning... there's enough shortcuts and quirks to justify "tip of the day"
but on machine learning... 6. Prioritize the order in which images are downloaded on screen, based on whats most useful to the content of web page. 7. Recognize which links on a page are most likely to be visited and place it on a menu available on status bar(similar to styles) 8 Produce a citation for the current page (try to find author and other important details) 9. Based on font resizes the user has done in the past, make sure the fonts displayed on page are large enough for user to read. 10. Recognize when a user does a search at a site often enough and offer to add it to their search bar. 11. Recognize which webpages the user is more likely to revisit, to sort the history by.
Velocity of earth (relative to sun) ~30km/s Diameter of Earth: ~12.6e3 km according to http://en.wikipedia.org/wiki/Earth Worse case amount it has to delay an asteroid's impact: dt=12600/30 ~=420s (assuming the asteroid hits leading edge of earth, if it hits earth dead in center, then only need to deflect it by half as much time.)
"Most asteroids travel at a velocity of 15 to 30 Km/sec" http://www.kc4cop.bizland.com/Asteroid%20 Watch%20a nd%20Information.htm V=20km/s
V*T=(V-dv)*(T+dt) dv is the change in velocity at impact... T is how long before the impact the asteroid must be hit to delay it by dt
solve for T to get how long before the impact asteroid must be hit... T=420*(V-dv)/dv assuming dvV (which I think is a very safe assumption based on masses) then (V-dv)=V
T=8400(km/s) / dv
Asteroid has a KE of 1/2 *m*v^2 = 0.5*4e10*20000^2= 8e18 J Assuming probe has a mass at 1000kg at 15km/s (the speed voyager probes are going) totalling a 35km/s impact (note: I'm not using Hidalgo for these figures) Probe has a KE of 0.5*1000*15000^2=1.1e11 KE[Ast]-KE[probe]=1/2*(m[ ast] + m[probe]) *v^2 which leads to about dv~= 4e-4 km/s (0.000002%)
T=2100000s ~= have to deflect asteroid 24 days before impact
in my example: Probe mass=1000km probe velocity=15km/s Asteroid velocity=20km/s Asteroid mass=4e10
I welcome any corrections or suggestions. I believe the dv calculation has the most inaccurate assumptions. It assumes that the probe and asteroid collide head-on (which is basically impossible for a probe launched from earth)
The earth is a small target (in this scope) so you barely have to deflect the asteroid if you hit it at a distance. This isn't encouraging however when you consider the asteroid is a much smaller target that we must hit.
I just went to that site and saw no such warning. Furthermore they had a link to sign-in to passport. Does the warning come up only after you login? (doesn't that defeat the purpose of the warning)
Please provide a specific link as well as username/password.
Slashdot Mirror
I'm not a radar engineer (But I have taken some classes on radar principles). I don't see any mention of what frequencies it was, which I'm sure would rule it out as a radar. But I see a few ways they could eliminate as a radar.
The biggest indicator is likely the shape of the pulse. Even in the best square wave there's a rise time and fall time (the time it takes to go from 0 to 1). However there won't be the same shape when its just sliding frequencies. If you graphed amplitude vs time for thin cross sections of frequencies and then lined up the cross sections for the radar emitter you'd probably see some type of parabola thats uniform in the center frequencies but truncated on the ends where the power went on and off. However if this came from a distant galaxy, every frequency would have the same exact shape of amplitude vs time once you remove the refraction delay.
Secondly being that this is a very large antenna, 210m (large aperture), it is high gain. That means high frequencies must be right in front of the antenna, the lower the frequency the further it can be from its center. At microwave frequency of 2.5ghz (assuming the antenna is circular) this antenna would have a 0.04degree beamwidth. Even down to 30Mhz that'd only be 3.3degrees. So basically this object would have to be right above the antenna or a reflection off something right above it.
Thirdly you can't receive while transmitting (You'll burn out the receiver at the powers the transmitter is operating at). If the pulse was 5ms, and factoring the speed of light that means this radar would be blind to anything closer then 750Km. (c*5ms/2.. its divided by two for roundtrip time). That really pigeonholes its use as a radar. I'm sure there's things that use long pulses, but not for typical air traffic control.
Now I'm ignoring the saturation, its quite likely they can't really analyze the shape of the pulse. It's quite possible that their data is useless for analysis if its oversaturated.
Exactly thats how permadeath should be.
Permadeath should be inevitable (there's no escaping old age)
Permadeath shouldn't be the end (kids get your wealth)
PK permadeaths should have consequences (justice)
It shouldn't be a godlike character training up, but an evolutionary process where you burn through one character and move to next. If the kid isn't a total newbie again when they start again, it should be fun to die and start your next character.
For example, everytime you gain xp, your kids gain 1/3 xp (but 2 parents) except you have no say in their class or how they train their skills. Problems come if this isn't a RP game, when a male character dies and all his children are females, so maybe some things they can choose at time of character-switch like gender.
If I get stuck at 10,000 feet hanging by a ribbon... the last thing I want to rescue me is something with spinning blades overhead. That'd make a very quick end to an expensive project.
The loss of mobility would make it not worth using. Once a firefight starts, its all about cover and concealment... not armor. Kevlar helmets aren't meant to stop a bullet, they're meant to deflect a stray one. The robot would not be able to stop multiple rpg hits and it'd be more likely to take a hit because you'd be unable to get into the prone position.
Frankly I'd rather be prone behind some cover then standing up with thick armor.
A mech would be better suited to increase load capacity as another poster said.. something attached to legs only, that can help them carry another 90 lbs. Better yet would be an independent robot mule, to carry ammo.
every (or, nearly every) operation you can do on a computer can be thought of as having an input state, an operation on that input, and an output state. Backtracking, therefore, is as simple as coming up with the reverse of whatever the operation was, giving you the input state once more.
after execution of A=B the state is A is 1, b is 1... tell me what was A before execution. Clobbering of data is not reversible and is very common (as in everytime there's an assignment operator used). Even things like (A+B) which sound reversible at first aren't quite once you consider that the flags are clobbered (when'd the overflow flag get set?)
You know what kind of transmitter can Rx a signal at -300dBm? The magical non existant kind.
Well duh, a transmitter couldn't receive any signal. Now if they had a receiver OTOH... damn still wouldn't work.
I was thinking along same lines... I had no idea machines were that precise in those small of time periods.
what is 5 femtoseconds times the speed of light?
A: 1.49896229 microns
It's easy to look at this and say the fines should be proportional to the consequences. But you also have to consider the rewards. The fines always have to be heavier then the amount earned by breaking the rule.
Suppose hypothetically that a person could save $1000 by jaywalking, that means the fine for jaywalking must be at least $1000 or soon everyone will be doing it. But that doesn't mean we consider jaywalking a serious offense still, just thats how much it costs to mitigate it.
Compare this to a TV show, they make big money for breaking the rules, under old rules they were encouraged to break rules because they'd make more then the fine costs. It doesn't mean it's considered a huge crime that it has such a big fine. It just means they want to discourage it.
umm Rahxephon is already released in US.
Rahxephon ADV Films Announced: 7/05/2002 Released: 03/25/2003
Courtesy of http://www.animeondvd.com/licenselist/
Gankutsuou is a new series (about halfway through its first and only season) with high ratings. It WILL be licensed. It's a retelling of the Count of the Monte Cristo.. certainly not niche there.
Kimi Ga Nozomu Eien has received a lot of awards among the non-Japanese anime community. Guess what, licensers look at the popularity of fansubs, and it will be picked up. Check out anidb if you don't believe me about its popularity, probably biggest interactive DB on net for anime (~20000 EP's). 8.57 (1324 votes) for Kimi, for comparison Cowboy Bebop (an extremely popular series released in US and on TV) is 8.73 (1922 votes)
Two more site-plugs while I'm at it
Kyle's edit list
AnimeNewsNetwork Anime Encyclopedia
The further they try to predict the larger the error margin. That means they have to include that error because it's just as likely it can go a different way. So when they plot it's course instead of a line, it becomes a cone (where the asteroid can follow a line anywhere in that cone). When they come up with 1 in 62 chance that means the earth takes up 1/62 of the cross section of that cone (well its more complex then this, since I doubt they would use a linear distribution but I'm simplifying it so you can understand how they get these numbers).
As they get more measurements (and spend more time numbercrunching existing ones) they'll have less of an error margin, the cone becomes tighter and tighter (until its almost just a line). So they'll either increase the chance (because the earth is taking up a larger portion of that smaller cone) or they'll eliminate it (because the earth is now outside of the new cone) when they get more data.
Self-heating winter coats... so they take photons, convert it to electricity then convert it to heat.. ingenious.
or you can just wear a black shirt and skip the whole electricity part.
Shouldn't 011011010110111101101111 actually be 010011010110111101101111.
Am I the only one on slashdot that thinks 011011010110111101101111 just looks funny.
My concern is the " exposing children to adult sexual activity, including pornographic movies and photographs" Does that include the vast majority of R rated movies? Does that mean everyone that watched the superbowl halftime show was sexually abused? I think almost all kids under 16 have seen an R rated movie that depicted a sexual act.
Psh just you wait till the first round of people are snipped and the media gets a hold of the story. A couple deaths and you'll be able to convince a couple thousand people they're next on the list.
What? you mean they were idle threats?
With Windows/IE, you can do almost anything and configure it almost completely (within its limits, of course) through the mouse and the menus.
You mean like in IE how you can configure it to be able to download more then 2 files at once? That's right you can use the mouse and menus to go through the registry to fix that right?
http://www.tweakxp.com/tweak764.aspx
or set the default download directory... oops no registry
http://www.tweakxp.com/tweak128.aspx
changing mailto: to load another mail program.. registry again
http://www.tweakxp.com/tweak734.aspx
You try to make it sound like its a big deal to install firefox, it's not any more complex then installing any other windows application you download off net. In the time it takes you to update IE to a stable state, you could already have downloaded, installed, and be adapted to firefox (that's because there basically is no adaption time).
Your rant seems aimed at Linux and not at Mozilla... because there's no reason for the average user (yes even the average slashdot user) to recompile or muck around with scripting (XPI) in firefox. Furthermore Mozilla and Linux have nothing to do with eachother, why you arbitrarily lumped them together is a little odd. The common denominator being that they both compete with Microsoft I guess. While you address only one side of your grouping it makes the argument sound akin to "I don't like cats and dogs... they leave droppings on the lawn, bark at night and they attack the mailman... and that is why I don't like cats and dogs"
Very true public servants should be under surveillance by the public. However the problem comes in once you realize that its not just the cops in police stations.
"Hey Tommy, we saw you on Cop-Cam, are you squeeling on us?"
or
"You wouldn't believe who I saw on Cop-cam, Linda was all battered up with her clothes in shreds"
I think cameras are appropriate in public places because they're *gasp* public. But if you make police stations into a TV-show how can a victim report a crime without giving up that privacy.
Should we also web-cast all 911 calls so we can be assured the operators are doing their job right?
Now I agree that politicians should have no privacy while performing government duties. Unlike cops they don't have a special obligation to individuals.
This is NOT 1984! 1984 is government cameras in your home.
/. when they try to argue that P2P can be used for good.
No it's not, the darkside of 1984 is the PROPOGANDA not the surveillance.
"Nineteen Eighty-Four (sometimes 1984) is a darkly satirical political novel and love story by George Orwell. The story takes place in a nightmarish dystopia, in which an ever surveillant State enforces perfect conformity among citizens through indoctrination, fear, lies and ruthless punishment."
-Wikipedia
The counter is that the surveillance makes it easier to "deal" with dissidents but so does a police department. Should we remove police departments because they may do evil? I love this double standard on
People may as well be saying "OMG the schools are funded by the government to teach our children??! 1984!"
IANAG but I don't think you can truly compare golf on one day to another since the conditions will change. I think even I can beat Tiger Woods score on a hurricane day ;)
In competitive games amateur does not mean necessarily a reference to skill level. Amateur simply means not professional (makes money through the game).
Think amateur golf tournaments, they may be amateurs, but they can still kick most peoples' ass.
It's not a good idea to microwave an object without something to absorb the microwaves (typically water in the food you're cooking). If nothing absorbs the microwaves they may be reflected and damage the magnetron. If you want to destroy RFID's in clothing, you can add a cup of water beside it or something similar while microwaving.
If you're microwaving water beware of superheating
With regard to electronics, RFID's can be remotely killed without the use of a microwave by sending a specific signal. This allows you to target one RFID but not the one adjacent to it. You can be assured there will be consumer devices to kill RFID's. It's a hobby-project I'd like to pursue in future but there's no point until it becomes more standard.
another poster linked to EFF being 501(c)(3)
Wouldn't they have trouble with "it may not attempt to influence legislation as a substantial part of its activities"
No they say the percentage of people who never have and never will has risen.
That percentage can rise by people who previously said "Never have, but I'd like to" change their votes.
But most likely its due to a small sample size.
Machine learning? how bout user learning... there's enough shortcuts and quirks to justify "tip of the day"
but on machine learning...
6. Prioritize the order in which images are downloaded on screen, based on whats most useful to the content of web page.
7. Recognize which links on a page are most likely to be visited and place it on a menu available on status bar(similar to styles)
8 Produce a citation for the current page (try to find author and other important details)
9. Based on font resizes the user has done in the past, make sure the fonts displayed on page are large enough for user to read.
10. Recognize when a user does a search at a site often enough and offer to add it to their search bar.
11. Recognize which webpages the user is more likely to revisit, to sort the history by.
Velocity of earth (relative to sun) ~30km/s
0 Watch%20a nd%20Information.htm
[ ast] + m[probe]) *v^2
Diameter of Earth: ~12.6e3 km
according to http://en.wikipedia.org/wiki/Earth
Worse case amount it has to delay an asteroid's impact: dt=12600/30 ~=420s
(assuming the asteroid hits leading edge of earth, if it hits earth dead in center, then only need to deflect it by half as much time.)
"Most asteroids travel at a velocity of 15 to 30 Km/sec"
http://www.kc4cop.bizland.com/Asteroid%2
V=20km/s
V*T=(V-dv)*(T+dt)
dv is the change in velocity at impact...
T is how long before the impact the asteroid must be hit to delay it by dt
solve for T to get how long before the impact asteroid must be hit...
T=420*(V-dv)/dv
assuming dvV (which I think is a very safe assumption based on masses) then (V-dv)=V
T=8400(km/s) / dv
Asteroid has a KE of 1/2 *m*v^2 = 0.5*4e10*20000^2= 8e18 J
Assuming probe has a mass at 1000kg at 15km/s (the speed voyager probes are going) totalling a 35km/s impact (note: I'm not using Hidalgo for these figures)
Probe has a KE of 0.5*1000*15000^2=1.1e11
KE[Ast]-KE[probe]=1/2*(m
which leads to about dv~= 4e-4 km/s (0.000002%)
T=2100000s ~= have to deflect asteroid 24 days before impact
in my example:
Probe mass=1000km
probe velocity=15km/s
Asteroid velocity=20km/s
Asteroid mass=4e10
I welcome any corrections or suggestions. I believe the dv calculation has the most inaccurate assumptions. It assumes that the probe and asteroid collide head-on (which is basically impossible for a probe launched from earth)
The earth is a small target (in this scope) so you barely have to deflect the asteroid if you hit it at a distance. This isn't encouraging however when you consider the asteroid is a much smaller target that we must hit.
I just went to that site and saw no such warning. Furthermore they had a link to sign-in to passport. Does the warning come up only after you login? (doesn't that defeat the purpose of the warning)
Please provide a specific link as well as username/password.