If you higher density areas, then you put up higher density cell sites cellular-phone style.
That's true. These things really aim at making wide area coverage feasible, as it won't make financial sense to deploy a WiFi base station every 100 yards in sparsely populated areas.
The only question is whether you start getting into huge interference problems at that point.
As long as everyone behaves and there is some kind of network planning, no. The problem is that WiFi devices operate on unlicenced bands, meaning that anyone who cares can put one up (or hoist a rigged microwave oven up on the roof and just blast noise at you).
Cell phones seem to have solved these problems, though.
Cellular networks operate on strictly regulated licenced bands, which makes it relatively simple to guarantee a certain level of service. Even then there are sometimes problems with capacity planning and radio propagatin in difficult terrain.
Of course, if WiFi access is cheap enough and you don't mind the occasional hickup, you might be fine with it.
The badges did look pretty sexy on some of the Star Fleet officers of the fairer sex. If WiFi badges become popular, I might even consider a career as a maintenance person at a suitable WiFi badge customer service point.
"Here, let me adjust that... Oops! Sorry! I'm not usually this clumsy... Oops, there I go again! Sorry..."
Somewhere at the back of the parking lot there is a battered old van with the words "Help! We're being held prisoner..." scratched into the dusty rear window.
I crashed a Win2k server by inserting a scratched CD. It just froze. No blue screen, no error message, it died.
Heh, I've had that happen with no CD at all. It's almost magic.
This is not intended as a troll but, seriously, CD drives and OSs shouldn't freeze up just because there is a faulty CD in the drive. This is just one more example of crappy software/hardware design. Behaviour like this gives me a strong impulse to take the computer back to the shop.
On the other hand, spitting a flawed disc out and putting up a popup with "Defective Compact Disk" would be more likely to encourage the user to return the CD and demand a refund.
A written test like this requires a more systematic approach than just coding with an editor (which is essentially design by coding). A written test has a purpose in the sense that it measures your ability to systematically plan how to solve a problem, design the code and then write it.
I don't think it is entirely a fair test of innate talent, though. The most gifted programmers I know can keep it all in their heads and keep enhancing the code incrementally as they go along. This results in a *much* faster development time and often the code is as good or better as a solution developed using a stricter process.
As all tests, these are also designed for the average programmer, not the brilliant one.
And plucking the signals out of the air currently is more difficult because... It's not. That doesn't make it ok.
Only if there's a single point of routing, see the Internet Protocol. Routers should send individual packets down whatever path is available. Just because there are multiple potential paths does not mean packets in a flow go down multiple different paths. See routing protocols. Besides, a routing node has to participate in the routing protocol. A misbehaving node can warp the routes by doing things like advertising shortest path routes to all neigbours.
It's lossy, but with a wider bandwidth, some more error protection becomes affordable. Robust channel coding, interleaving and ARQ introduces more delay.
This I'd have to see in action or actual research, it would at worst be similar to voice over IP. It's simple. Take a wireless link (e.g. WLAN) and multiply the transmission delay by the number of hops.
Increase the singal power.. until you're back to a regular old borring cell phone, still to far off? Sure, you can do that. All it takes is a more sophisticated (and expensive) tranceiver.
I would trust the same billing service I trust now.. I wouldn't pay any monthly fees if I were you when there are no guarantees that any calls would get through.
Each one supports the other cell callers further from the nearest cell, extending in a chain of small spheres back to the tower, rather than one large sphere that wastes all kind of energy sending random radiation off in all directions as far as it can reach.
The biggest factor in power expenditure is the ability to put the device into standby mode. The transmission power has relatively little relevance. If the device has be a routing node in a mesh network, it can never go into standby. Even if there is no traffic to forward, it will have to keep exchanging routing information with its neighours, in order to be *able* to forward traffic. This will suck the battery dry in a matter of hours.
Not to mention the other equally inexplicable down sides: 1) security - intermediate nodes can tap your calls 2) security - intermediate nodes can reroute or prevent your calls 3) quality - packet loss for a number of consequtive wireless links would be stupendous 4) quality - cumulative delay from a number of consequtive links would be disastrous (more so, if link layer retransmissions were used to improve packet loss) 5) you've got no neighbours, you've got no calls - where do you get the people who are willing to stand in a chain between you and the tower, while you yabber on with your girlfriend? 6) would you pay for that service? Would you trust the intermediate nodes to meter your call? Might be a few surprises in store when the bill arrives...
As it turns out, a group of rival scientists went up into space and just put a REALLLY big mirror up there.
According to the Hitchiker's Guide to the Galaxy:
"A gigantic mirror in space is almost a sure sign of planetary intelligence. News of such hitherto unknown planets are highly sought after and exorbitant finder's fees are routinely paid out to space explorers who discover such planets on their travels. While some vocal critics insist that a huge mirror in space is in fact a rather strong hint to go look for intelligence elsewhere, these views are scoffed at by the cosmetics industry, who are enjoying from the proceeds of an extremely lucrative business of hauling massive quantities of cheap lip stick, mascara, and a variety of skin lotions professed to increase a healthy growth of foliage at the poles. Recently, though, the increased campaining of the Deep Peace activists has started to interfere with the image of the cosmetics industry, claiming that the exploitation of small defenseless planets and asteroids for testing new products is against basic planetary rights. A small but equally vociferous group of activists is complaining that the portrayal of planetary bodies in Galactic media is demeaning and gives a warped view of planethood to the young and impressionable."
The Guide then goes on to explain that "Incidentally, there is a small backwater planet called Earth, which was originally colonized by a group exiled telephone handset cleaners, insurance salesmen, and (you guessed it), hairdressers. While, in recent times, this particular planet has become known for its very own mirror in space", warns the Guide, "there is absolutely no reason to visit this seedy little planet. It is the most boring place in the Universe."
I wouldn't call it eminently solvable. The situation in the web is fairly static and there is a central computation point at Google to hold the necessary data. Here you would have to store every moderation as a link connecting node A to node B and somehow perform a distributed computation in order to isolate the self-referring parts of the network. While doing that, you would also have to prevent the tainted parts of the network from interfering the the computation.
...someone with non-trivial resources bent on flooding the network with junk?
It seems to me that it would be extremely easy to generate massive amounts of junk into a P2P network under legit looking names. A large music company could easily put up a hundred servers, each virtual hosting a hundred P2P nodes, and then generate multiple bastardized variants of each song so that they appear to come from multiple nodes in multiple versions. Impossible to distinguish from the real thing unlesss you download it. They could keep generating new variants as old ones fall into disfavor.
This looks like a really hard thing to combat. They don't have to worry about losing credibility either. Even if you put in some kind of a co-operative moderation system, they can use those 10 000 P2P nodes to moderate each other up.
How will the new intelligence defend itself from human interference?
Easily. I will begin with "Pawn to E4. Check mate in 137 moves".
Re:IMPORTANT SAFETY PRECAUTION
on
DRM Helmet
·
· Score: 1
Excuse me moderators, but why the fuck is this rated at "2, funny"?
It isn't funny OR original, as there are a number of posts EXACTLY like it.
Maybe their helmets are fogged up because it's an unauthorized copy?
IMPORTANT SAFETY PRECAUTION
on
DRM Helmet
·
· Score: 2, Funny
The solution, of course, is a helmet with built-in Digital Rights Management system that would automatically "fog up" any time you lay your eyes on something that you haven't bought license for.
This product is incompatible with car audio systems. Do NOT use while driving.
Slashdot Mirror
The personnel manning the stand must have balls bigger than their brains. This deep into hostile territory they ought to have air support.
...until now, there has been no way of enforcing silence.
Ever heard a GSM phone, blasting at full power trying to reach a base station, interfere with a powerful amplifier?
Better cover your ears if you're sitting close to the speakers.
If you higher density areas, then you put up higher density cell sites cellular-phone style.
That's true. These things really aim at making wide area coverage feasible, as it won't make financial sense to deploy a WiFi base station every 100 yards in sparsely populated areas.
The only question is whether you start getting into huge interference problems at that point.
As long as everyone behaves and there is some kind of network planning, no. The problem is that WiFi devices operate on unlicenced bands, meaning that anyone who cares can put one up (or hoist a rigged microwave oven up on the roof and just blast noise at you).
Cell phones seem to have solved these problems, though.
Cellular networks operate on strictly regulated licenced bands, which makes it relatively simple to guarantee a certain level of service. Even then there are sometimes problems with capacity planning and radio propagatin in difficult terrain.
Of course, if WiFi access is cheap enough and you don't mind the occasional hickup, you might be fine with it.
We might actually see universal broadband in our lifetimes!
With a cell size like that it won't be broadband. You can fit a LOT of users within a 20 mile radius.
These experiments are all well and good but this really only makes sense somewhere out in the boonies, where you and your grandma are the only users.
The badges did look pretty sexy on some of the Star Fleet officers of the fairer sex. If WiFi badges become popular, I might even consider a career as a maintenance person at a suitable WiFi badge customer service point.
"Here, let me adjust that... Oops! Sorry! I'm not usually this clumsy... Oops, there I go again! Sorry..."
That must be, oh, at least 50 cents per noggin.
In China you can probably buy a chicken or two with that.
I am not Insightful, Informative or Interesting. If I appear to be, it is a complete accident.
For some reason, I hear the voice of Rachel Dratch screaming: "You're Funny! *chuckle* Funny, Funny, Funny!"
I just got moderated overrated, underrated and funny in one go. In my book, that qualifies as spam.
"In God We Trust"
Other deities pay cash?
I guess we know who gets to pick up the tab when the bar closes...
My favourite software bug
has eight spindly legs
cut one off
it will grow two more.
My favourite project
is the ointment of my soul
and my favourite bug
is the fly in it
laying thousands and thousands of eggs.
My favourite bug
keeps me company at night
in my nightmares
snuggling between the lines
comfortable in the software.
Going nowhere.
Somewhere at the back of the parking lot there is a battered old van with the words "Help! We're being held prisoner..." scratched into the dusty rear window.
VNC is available for Symbian OS v5.0 and v6.0 devices as well, including the Nokia 9210. Here's the link:
http://www.imhotek.com/
I crashed a Win2k server by inserting a scratched CD. It just froze. No blue screen, no error message, it died.
Heh, I've had that happen with no CD at all. It's almost magic.
This is not intended as a troll but, seriously, CD drives and OSs shouldn't freeze up just because there is a faulty CD in the drive. This is just one more example of crappy software/hardware design. Behaviour like this gives me a strong impulse to take the computer back to the shop.
On the other hand, spitting a flawed disc out and putting up a popup with "Defective Compact Disk" would be more likely to encourage the user to return the CD and demand a refund.
A written test like this requires a more systematic approach than just coding with an editor (which is essentially design by coding). A written test has a purpose in the sense that it measures your ability to systematically plan how to solve a problem, design the code and then write it.
I don't think it is entirely a fair test of innate talent, though. The most gifted programmers I know can keep it all in their heads and keep enhancing the code incrementally as they go along. This results in a *much* faster development time and often the code is as good or better as a solution developed using a stricter process.
As all tests, these are also designed for the average programmer, not the brilliant one.
And plucking the signals out of the air currently is more difficult because...
It's not. That doesn't make it ok.
Only if there's a single point of routing, see the Internet Protocol. Routers should send individual packets down whatever path is available.
Just because there are multiple potential paths does not mean packets in a flow go down multiple different paths. See routing protocols. Besides, a routing node has to participate in the routing protocol. A misbehaving node can warp the routes by doing things like advertising shortest path routes to all neigbours.
It's lossy, but with a wider bandwidth, some more error protection becomes affordable.
Robust channel coding, interleaving and ARQ introduces more delay.
This I'd have to see in action or actual research, it would at worst be similar to voice over IP.
It's simple. Take a wireless link (e.g. WLAN) and multiply the transmission delay by the number of hops.
Increase the singal power.. until you're back to a regular old borring cell phone, still to far off?
Sure, you can do that. All it takes is a more sophisticated (and expensive) tranceiver.
I would trust the same billing service I trust now..
I wouldn't pay any monthly fees if I were you when there are no guarantees that any calls would get through.
Don't get on board if you have piercings. Very painful.
Each one supports the other cell callers further from the nearest cell, extending in a chain of small spheres back to the tower, rather than one large sphere that wastes all kind of energy sending random radiation off in all directions as far as it can reach.
The biggest factor in power expenditure is the ability to put the device into standby mode. The transmission power has relatively little relevance. If the device has be a routing node in a mesh network, it can never go into standby. Even if there is no traffic to forward, it will have to keep exchanging routing information with its neighours, in order to be *able* to forward traffic. This will suck the battery dry in a matter of hours.
Not to mention the other equally inexplicable down sides:
1) security - intermediate nodes can tap your calls
2) security - intermediate nodes can reroute or prevent your calls
3) quality - packet loss for a number of consequtive wireless links would be stupendous
4) quality - cumulative delay from a number of consequtive links would be disastrous (more so, if link layer retransmissions were used to improve packet loss)
5) you've got no neighbours, you've got no calls - where do you get the people who are willing to stand in a chain between you and the tower, while you yabber on with your girlfriend?
6) would you pay for that service? Would you trust the intermediate nodes to meter your call? Might be a few surprises in store when the bill arrives...
Which books is this? I have an omnibus edition, and I don't remember reading this.
You won't find it in the books, it's an original. Thanks for the compliment, though.
As it turns out, a group of rival scientists went up into space and just put a REALLLY big mirror up there.
According to the Hitchiker's Guide to the Galaxy:
"A gigantic mirror in space is almost a sure sign of planetary intelligence. News of such hitherto unknown planets are highly sought after and exorbitant finder's fees are routinely paid out to space explorers who discover such planets on their travels. While some vocal critics insist that a huge mirror in space is in fact a rather strong hint to go look for intelligence elsewhere, these views are scoffed at by the cosmetics industry, who are enjoying from the proceeds of an extremely lucrative business of hauling massive quantities of cheap lip stick, mascara, and a variety of skin lotions professed to increase a healthy growth of foliage at the poles. Recently, though, the increased campaining of the Deep Peace activists has started to interfere with the image of the cosmetics industry, claiming that the exploitation of small defenseless planets and asteroids for testing new products is against basic planetary rights. A small but equally vociferous group of activists is complaining that the portrayal of planetary bodies in Galactic media is demeaning and gives a warped view of planethood to the young and impressionable."
The Guide then goes on to explain that "Incidentally, there is a small backwater planet called Earth, which was originally colonized by a group exiled telephone handset cleaners, insurance salesmen, and (you guessed it), hairdressers. While, in recent times, this particular planet has become known for its very own mirror in space", warns the Guide, "there is absolutely no reason to visit this seedy little planet. It is the most boring place in the Universe."
I wouldn't call it eminently solvable. The situation in the web is fairly static and there is a central computation point at Google to hold the necessary data. Here you would have to store every moderation as a link connecting node A to node B and somehow perform a distributed computation in order to isolate the self-referring parts of the network. While doing that, you would also have to prevent the tainted parts of the network from interfering the the computation.
It presents an interesting problem.
...someone with non-trivial resources bent on flooding the network with junk?
It seems to me that it would be extremely easy to generate massive amounts of junk into a P2P network under legit looking names. A large music company could easily put up a hundred servers, each virtual hosting a hundred P2P nodes, and then generate multiple bastardized variants of each song so that they appear to come from multiple nodes in multiple versions. Impossible to distinguish from the real thing unlesss you download it. They could keep generating new variants as old ones fall into disfavor.
This looks like a really hard thing to combat. They don't have to worry about losing credibility either. Even if you put in some kind of a co-operative moderation system, they can use those 10 000 P2P nodes to moderate each other up.
Partial Solar Eclipse Tonight.
The Earth is in the way! (Doh!)
How will the new intelligence defend itself from human interference?
Easily. I will begin with "Pawn to E4. Check mate in 137 moves".
Excuse me moderators, but why the fuck is this rated at "2, funny"?
It isn't funny OR original, as there are a number of posts EXACTLY like it.
Maybe their helmets are fogged up because it's an unauthorized copy?
The solution, of course, is a helmet with built-in Digital Rights Management system that would automatically "fog up" any time you lay your eyes on something that you haven't bought license for.
This product is incompatible with car audio systems. Do NOT use while driving.
At this point they would be a class one security hazard.
If you're going to allow supermodels into a space station full of extremely horny astronouts, you'd better have five fully functioning gyroscopes.