If you were building a system from scratch for wireless internet, how would you do it today?
MMDS providers seem to be having lots of porblems that might be technical or might be excessive cash burn rate. Its run in the 2.ish ghz range and is line of site using well known technology. Sprint had been offering it in places like Chicago but isn't any more. From what I can tell MMDS is the lowest cost option right now and most of the others have never been rolled out or are still in the planning stages.
Some very small towns now have 802.11b systems but thats limited to a very small population and won't work for more than a few hundred people and they don't scale well.
The 800mhz/900 mhz split was a result of a nato agreement. The idea is one side of the atlantic would use one set for military and the other for comercial and on the other side of the pond, allocations would be reversed. This would allow the US to move its troops into europe with their own radios and not get in the way of the local countries military radios. It would be assumed that should events cause this to happen, the local civilians would have more to worry about than their radios not working anymore. When the split was done, the idea of having millions of hand held mobile radio phones wasn't even considered.
The airways are how the system remains safe if the radio in the plane stops working. A simple look at graph theory shows they can not provide the level of redundancy that exists now and allow free flight but they are going ahead anyway. The problem is that you end up with an exponential growth in the data set size and you have to solve that in real time. Its just too complex for moden computers to deal with no matter how good the rigged demos look. If you force the problem into the realm of comptuers, you must depend on them and we all know thats asking for trouble.
When I fly in the US, I use airways but since I'm flying VFR (visual flight rules), I could go direct. The last flight over about 1/2 the US would have resulted in a savings of less than 15 nmi (25km) over a course of over a thousand miles.
Here is a small picture of airways near salt lake city. The airways are grey lines, airports are circles and the triangles are VOR (radio beacons)
With GSM you need to be able to grab the entire range of spectrum and the you can put the parts back to gether later. Grabbign all the spectrum is too expensive for the amature crowd but with some of the million channel recivers like the ones used for SETI, its trival. One would assume the spooks know about this type of device.
GSM crypto isn't very good. Its about keeping people from getting the data in real time. Computers have gotten much faster since it was invented. The article mentions 2 keys per microsecond. A modern attack of the type mentioned could do 2 per nanosecond using a simple off the shelf programable logic array for a key in under 5 minutes 1/2 of the time. Remember the phone comapny has one of the keys and may be transmitting them out as well.
As an American living in Austrlia, I have been known to watch the exchange rate since I get paid in AU$ but I have bills in US$.
One thing I've noticed is that everytime a major US newspaper publishes something about the Australian Liberal party that invovles large amounts of money, the AU$ drops compared to the US$. If the liberal party isn't named, then logic seems to hold and if the spending is good for Australia, the AU$ rises and if its bad, the AU$ drops like it should. If the liberal party wants to get the exchange rate back to.79 then I think they will need to change their name.
The figures for the 1996 census said that 55% of th people living in Australia were not born there or their parents were born there.
According to this 26.1% of the residents of Australia were born elsewhere.
From what I've seen as a visitor, rascism is alive and well in Australia. Just go to Chinatown or any other ethnic area in any major city. As an American living in Australia, I think that there won't be much left of Australian culture in 20 years as the places becomes more and more like the US. The population is growing at a high rate but any metric you look at shows traditional Austrlaian culture is not growing and may be shrinking. All the new shops are copies of American concepts if not licensed or franchised (Safeway, IGA, K-mart, Target). Australian McDonnalds sold abuot 345 million meals last year. That means that about 1 in 20 people in Austrlia eat there every day. Thats better market share than in the US.
Water is the limiting factor if you want to fully populate the world. Its why Australia will be hurting if it gets many more than 20m people and a decade drought like some of thouse in the past 200 years. Opps already over that 20m mark.
As for strving people, its almost always a political problem. One recent case involved the political powers in Ethiopia selling their limited amount of food to buy guns.
BBC says warlords are filling the power vaccum. The Taliban that ran those areas are being released. I give them 6 months to find they way back to the top in many rural areas.
As for the most wanted, you'll have to dig through
this and this and this. Find other reports with more details and you'll find the quote about the 70% strength from a high ranking US offical (If I remembered which one, I would have a link for you) and the numbers (which change every week)
I assume you can find details about the US economy and the fact that Osama hasn't been found.
The US didn't win the gulf war (Sadam is still in power) and it looks like they they aren't going to win this one either since most of the boogie men will be alive when its done. The real question is will the people of Afganastan win this time?
Last reports were Al-quada is at 70% strength.
Talban will be back home and back in positions of power inside 6 weeks.
17 out of the 22 top Al-quada are missing and haven't been found in the dead. There are reports that most of them are alive.
The economy of the US is messed up as bad as its been in decades.
bin Laden is no where to be found
Result: bin Laden won this round. The us beat the shit out of bunch of rocks and harrased a bunch of young guys but failed to deal with the leadership it blamed for the problem. Looks like the same result as the Gulf war -- no problems solved but lots of problems are made worse.
Having access to news outside of the US as well as Foxnews and CNN, I can say there is quite a bit hidden. Things like the French news papers reporting that the CIA station chief meet with Osama in the hostpital in June. Things like the bin Laden family and the Bush family doing deals in the middle east. The Elron connection to midle east bansk that were explicitly excluded by presidental order from the anit-terrorism money hunt. None of this gets the slightest mention in the US press.
Maybe the best thing for the world right now would be for hte US to become isolationist but it can't because it needs too much oil.
If you go to your local book store and look at the subjects in the computer language section you will find a very good metric that java had its 15 minutes of fame.
In the past the largest sections cycled through Pascal, Ada, Visual Basic, C++, Java or now C#. The section sizes of C, Cobol, Fortran and Perl are very consistant. I see this as a sign of what will be here in 30 years and what won't.
Don't pick on poor Ashcroft. After all the poor guy lost his last job because a dead man beat him in an election. And to keep it on topic, it wasn't a mistaken count because of punch card chad.
Some of us write code at a beach with out computers:-)
In my high school fortran class you got once chance a day to run code and it had to work in a week. There was no room for mistakes since you had 5 compiles to get it right. It was a very worthwile system since it taught me how to the first time around. I've noticed that coders that learned to code in a nice clean baby sitting enviorment don't code as well as they think they can and when you throw real world embedded systems at them, they can't cope. If you can't get anything bigger than hello world to compile, you should work on foccusing on the problem at hand.
I seem to remember that Marvin Minsky was doing OOD type stuff at MIT in the 1950's. He got his Turing award 32 years ago so maybe they are looking at newer stuff now.
my local cash is Aus$, but the gear the runs the net and allmost all of stuff attached to it are priced in US$. Every try to buy something out of Tiawan? Once again in US$, not their local stuff.
$2/gigabyte plus telco charges. If your in an area where you can get good access then you have to pay about $300/mo for a T1(1.5megabit) or $4000/mo for a T3 (45megabit).
Have you considered that the pain of childbirth helps build bonds that are (were?) essential for proper child development? If you look at the very rare case where mothers suffer from something like post tramatic shock and they blame the pain on their kid, you will find that they will most likly never make a decent mother and in the past the kid would have had a very short life.
Women go through intense pain with childbirth but do not seem to have the long term problems that are typicaly associated with pain. It clear that the brain has evolved an effective way of dealing with that pain.
The hand rails at that time were intended to be mostly decrotive and there weren't standards on how high they should be. The owner of the house could have had a small kid and just decided to have it lowered.
Could it be diet causing people to grow? There was a huge milk shortage between 1966 and 1968 just like there was in the early 1940's and the late 1920's. People at their high growth times then are shorter in general than better times. The use of seroids in beef and chicken also started in the mid 60's which may result in younger kids being much taller than older generations.
Your starting to get a clue...
If you are going to routinely put 375 volts into a device, it should not have a large number of components that exceed their ratings once the mains voltage exceeds 340. Things that can break down are caps (which have been known to catch fire, vent and genenly smell bad), wire insulation which can result in shorts, transformer insulation that can cause the windings to have less resistance, various types of surge proection devices that will attempt to trip 50 times a second.
I've seen UL and TUV stamps of approval on lots of things for the Australian market based on testing at 220V. Sorry but Australia uses 240V and in places thats +/- 20%
Maybe MS has understod so many of us think their products are buggy. This could be bad for Linux since a major reason we can get it into places because its much more stable than MS.
I think the next time I talk to a MS sales rep, I'll have to explain that its not the bugs or stability keeping me from buying their products, its the lack of very complex menu options.
You haven't been playing with PC power supplies for long have you?
I work for a company that made bucketloads of cash reworking real IBM XT power supplies because while they were rated at 220/240VAC, their caps blew because someone at IBM forgot at 1.414x240+/-10% was. Can you say opps.
And you might want to check to see just what it takes to get that UL/CSA/TUV rubber stamp of approval.
Slashdot Mirror
If you were building a system from scratch for wireless internet, how would you do it today?
MMDS providers seem to be having lots of porblems that might be technical or might be excessive cash burn rate. Its run in the 2.ish ghz range and is line of site using well known technology. Sprint had been offering it in places like Chicago but isn't any more. From what I can tell MMDS is the lowest cost option right now and most of the others have never been rolled out or are still in the planning stages.
Some very small towns now have 802.11b systems but thats limited to a very small population and won't work for more than a few hundred people and they don't scale well.
The 800mhz/900 mhz split was a result of a nato agreement. The idea is one side of the atlantic would use one set for military and the other for comercial and on the other side of the pond, allocations would be reversed. This would allow the US to move its troops into europe with their own radios and not get in the way of the local countries military radios. It would be assumed that should events cause this to happen, the local civilians would have more to worry about than their radios not working anymore. When the split was done, the idea of having millions of hand held mobile radio phones wasn't even considered.
The airways are how the system remains safe if the radio in the plane stops working. A simple look at graph theory shows they can not provide the level of redundancy that exists now and allow free flight but they are going ahead anyway. The problem is that you end up with an exponential growth in the data set size and you have to solve that in real time. Its just too complex for moden computers to deal with no matter how good the rigged demos look. If you force the problem into the realm of comptuers, you must depend on them and we all know thats asking for trouble.
When I fly in the US, I use airways but since I'm flying VFR (visual flight rules), I could go direct. The last flight over about 1/2 the US would have resulted in a savings of less than 15 nmi (25km) over a course of over a thousand miles.
Here is a small picture of airways near salt lake city. The airways are grey lines, airports are circles and the triangles are VOR (radio beacons)
Slashdot would do good for itself to do an interview with him, maybe even make him the honorary "grandpa" of slashdot.
Would that make his user id -1?
With GSM you need to be able to grab the entire range of spectrum and the you can put the parts back to gether later. Grabbign all the spectrum is too expensive for the amature crowd but with some of the million channel recivers like the ones used for SETI, its trival. One would assume the spooks know about this type of device.
GSM crypto isn't very good. Its about keeping people from getting the data in real time. Computers have gotten much faster since it was invented. The article mentions 2 keys per microsecond. A modern attack of the type mentioned could do 2 per nanosecond using a simple off the shelf programable logic array for a key in under 5 minutes 1/2 of the time. Remember the phone comapny has one of the keys and may be transmitting them out as well.
As an American living in Austrlia, I have been known to watch the exchange rate since I get paid in AU$ but I have bills in US$.
.79 then I think they will need to change their name.
One thing I've noticed is that everytime a major US newspaper publishes something about the Australian Liberal party that invovles large amounts of money, the AU$ drops compared to the US$. If the liberal party isn't named, then logic seems to hold and if the spending is good for Australia, the AU$ rises and if its bad, the AU$ drops like it should. If the liberal party wants to get the exchange rate back to
The figures for the 1996 census said that 55% of th people living in Australia were not born there or their parents were born there.
According to this 26.1% of the residents of Australia were born elsewhere.
From what I've seen as a visitor, rascism is alive and well in Australia. Just go to Chinatown or any other ethnic area in any major city. As an American living in Australia, I think that there won't be much left of Australian culture in 20 years as the places becomes more and more like the US. The population is growing at a high rate but any metric you look at shows traditional Austrlaian culture is not growing and may be shrinking. All the new shops are copies of American concepts if not licensed or franchised (Safeway, IGA, K-mart, Target). Australian McDonnalds sold abuot 345 million meals last year. That means that about 1 in 20 people in Austrlia eat there every day. Thats better market share than in the US.
Water is the limiting factor if you want to fully populate the world. Its why Australia will be hurting if it gets many more than 20m people and a decade drought like some of thouse in the past 200 years. Opps already over that 20m mark.
As for strving people, its almost always a political problem. One recent case involved the political powers in Ethiopia selling their limited amount of food to buy guns.
Its called research
BBC says warlords are filling the power vaccum. The Taliban that ran those areas are being released. I give them 6 months to find they way back to the top in many rural areas.
As for the most wanted, you'll have to dig through
this and this and this. Find other reports with more details and you'll find the quote about the 70% strength from a high ranking US offical (If I remembered which one, I would have a link for you) and the numbers (which change every week)
I assume you can find details about the US economy and the fact that Osama hasn't been found.
The US didn't win the gulf war (Sadam is still in power) and it looks like they they aren't going to win this one either since most of the boogie men will be alive when its done. The real question is will the people of Afganastan win this time?
Last reports were Al-quada is at 70% strength.
Talban will be back home and back in positions of power inside 6 weeks.
17 out of the 22 top Al-quada are missing and haven't been found in the dead. There are reports that most of them are alive.
The economy of the US is messed up as bad as its been in decades.
bin Laden is no where to be found
Result: bin Laden won this round. The us beat the shit out of bunch of rocks and harrased a bunch of young guys but failed to deal with the leadership it blamed for the problem. Looks like the same result as the Gulf war -- no problems solved but lots of problems are made worse.
They are't hiding anything from you, honest!
Having access to news outside of the US as well as Foxnews and CNN, I can say there is quite a bit hidden. Things like the French news papers reporting that the CIA station chief meet with Osama in the hostpital in June. Things like the bin Laden family and the Bush family doing deals in the middle east. The Elron connection to midle east bansk that were explicitly excluded by presidental order from the anit-terrorism money hunt. None of this gets the slightest mention in the US press.
Maybe the best thing for the world right now would be for hte US to become isolationist but it can't because it needs too much oil.
If you go to your local book store and look at the subjects in the computer language section you will find a very good metric that java had its 15 minutes of fame.
In the past the largest sections cycled through Pascal, Ada, Visual Basic, C++, Java or now C#. The section sizes of C, Cobol, Fortran and Perl are very consistant. I see this as a sign of what will be here in 30 years and what won't.
Don't pick on poor Ashcroft. After all the poor guy lost his last job because a dead man beat him in an election. And to keep it on topic, it wasn't a mistaken count because of punch card chad.
Some of us write code at a beach with out computers :-)
In my high school fortran class you got once chance a day to run code and it had to work in a week. There was no room for mistakes since you had 5 compiles to get it right. It was a very worthwile system since it taught me how to the first time around. I've noticed that coders that learned to code in a nice clean baby sitting enviorment don't code as well as they think they can and when you throw real world embedded systems at them, they can't cope. If you can't get anything bigger than hello world to compile, you should work on foccusing on the problem at hand.
3.5 inch drives are a ince integer fraction of the size of an 8" drive bay.
He asked for cures and you didn't list one.
There is no cure for HIV and there is no cure for Hepatitis B.
I seem to remember that Marvin Minsky was doing OOD type stuff at MIT in the 1950's. He got his Turing award 32 years ago so maybe they are looking at newer stuff now.
my local cash is Aus$, but the gear the runs the net and allmost all of stuff attached to it are priced in US$. Every try to buy something out of Tiawan? Once again in US$, not their local stuff.
$2/gigabyte plus telco charges. If your in an area where you can get good access then you have to pay about $300/mo for a T1(1.5megabit) or $4000/mo for a T3 (45megabit).
See...Perl could get worse.
De duobus malis, minus est semper eligendum
Of two evils, the lesser must always be chosen
Have you considered that the pain of childbirth helps build bonds that are (were?) essential for proper child development? If you look at the very rare case where mothers suffer from something like post tramatic shock and they blame the pain on their kid, you will find that they will most likly never make a decent mother and in the past the kid would have had a very short life.
Women go through intense pain with childbirth but do not seem to have the long term problems that are typicaly associated with pain. It clear that the brain has evolved an effective way of dealing with that pain.
The hand rails at that time were intended to be mostly decrotive and there weren't standards on how high they should be. The owner of the house could have had a small kid and just decided to have it lowered.
Could it be diet causing people to grow? There was a huge milk shortage between 1966 and 1968 just like there was in the early 1940's and the late 1920's. People at their high growth times then are shorter in general than better times. The use of seroids in beef and chicken also started in the mid 60's which may result in younger kids being much taller than older generations.
Your starting to get a clue...
If you are going to routinely put 375 volts into a device, it should not have a large number of components that exceed their ratings once the mains voltage exceeds 340. Things that can break down are caps (which have been known to catch fire, vent and genenly smell bad), wire insulation which can result in shorts, transformer insulation that can cause the windings to have less resistance, various types of surge proection devices that will attempt to trip 50 times a second.
I've seen UL and TUV stamps of approval on lots of things for the Australian market based on testing at 220V. Sorry but Australia uses 240V and in places thats +/- 20%
Maybe MS has understod so many of us think their products are buggy. This could be bad for Linux since a major reason we can get it into places because its much more stable than MS.
I think the next time I talk to a MS sales rep, I'll have to explain that its not the bugs or stability keeping me from buying their products, its the lack of very complex menu options.
You haven't been playing with PC power supplies for long have you?
I work for a company that made bucketloads of cash reworking real IBM XT power supplies because while they were rated at 220/240VAC, their caps blew because someone at IBM forgot at 1.414x240+/-10% was. Can you say opps.
And you might want to check to see just what it takes to get that UL/CSA/TUV rubber stamp of approval.