Can you easily divide a meter into 1/12ths, 1/6ths, 1/2 and 1/4 just as easily as you can into 1/10?
Do you particularly want (or need) to do that in the metric system? No. The metric system of measurement is designed to avoid weird fractions like 1/12ths and 1/6ths, which is why such fractional amounts are not often used in the metric system. And besides, there's always that tiny bit of loss when your computer converts 1/3 or 1/6 or 1/12 to a float and back. Maybe not significant over a metre/kilo but significant when you're talking about billions of them.
Well, I know that they appear to know more than what the general cryptography community knows. For example (lifted from wikipedia, emphasis mine):
During development by IBM in the 1970s, the NSA recommended changes to the (DES) algorithm. There was suspicion the agency had deliberately weakened the algorithm sufficiently to enable it to eavesdrop if required. The suspicions were that a critical component -- the so-called S-boxes -- had been altered to insert a "backdoor"; and that the key length had been reduced, making it easier for the NSA to discover the key using massive computing power.
However, the public reinvention of the technique known as differential cryptanalysis suggested that one of the changes (to the S-boxes) had actually been suggested to harden the algorithm against this -- then publicly unknown -- method of attack; differential cryptanalysis remained publicly unknown until it was independently reinvented and published some decades later.
Wait. Am I missing something? It's just a composite video signal you need to transmit? Does it *have* to be over IP? You seriously can't do this with normal $50 analogue 2.4GHz wireless transmitters/recievers, of which there are such a plethora of I won't even bother posting a link?
I am mystified as to what you are trying to do dragging IP into this, that's all.
give/sell these to people thinking that they need these more then food, water, and shelter.
You give/sell these to people with half of the 1GB space loaded with text files on how to bootstrap themselves up to a higher standard of living.
Instructions on how to build water filters, decent sanitary facilities, preserve food, basic ammonia-cycle absorbtion icemakers, simple home power setups, crop growing/rotation, etc. Check out ITDG Technical Briefs (cached, the sites b0rked at the moment) - a laptop loaded with those files suddenly becomes pretty interesting to people. That's the kind of stuff that people will hopefully have access to once they get one of these. From all the billions spent on trying to improve their living conditions, it's all too obvious that we can't pull them out of the shit - they've got to learn to do it themselves. Laptops such as these could be the thing to help them do it.
I remember listening to the ABC (er, the Australian ABC) Radio National one day, and they were supposed to cut to some other place they were broadcasting. Instead I heard a engineer somewhere saying "hey there uplink 2 we're just going to send you some promos in the break", followed by a couple of 30 second promos and a bit of idle chatter between the two studios.... until one of them said "ooops. This thing's still synced up..."
The new studio patched in recovered pretty well, just said something along the lines of, "Ahahaha. Just a little insight into the life of a radio guy.... and now back to our schedule."
Suppose someone tries to make decisisions about how to handle their health from 2 measurements taken just seconds apart?
Really, depends if you're having a heart attack or not.
Medic 1: "Nah, look he's fine, his long-term yearly heart rate has only dropped 0.05%" Medic 2: "But he's turning blue... and he's stopped thrashing about!" Medic 1: "Look,long term averages show that this is just a minor blip. He'll be up and about in no time!"
So say you have a file and running it through par2 with 50% redundancy gives you 100 blocks. All you need at a later date is 50 (any 50) of those blocks and you can recreate the file.
That is the whole point of doing an optical recording on a permanent media like DVDR, the recording will be stable as long as the substrate is stable. So tell me, how long does "permanent" DVD-R Media last? No-one can tell for sure. All the dyes age with time, you get reflectivity issues, etc.
And as the GP said, as your need for backup storage increases over the years, you keep buying newer drives of larger capacity, relegating the old ones to the scrap heap (or just kept as old snapshots). So you only keep a drive until it's full and the wonderful march of technology allows to buy a new drive next year with another 50% storage, for the same price.
And simply the convenience of large data storage on a single drive is something to consider. I've 200GB of data. That's quite a few DVD's that I'd have to burn. And burn again, and again, and again, over the years because I'm unsure of DVD life. It would likely be more cost-effective for me to buy a new drive every second year, than to buy the media and spend the time to burn all my data to DVD.
If you've ever owned a mid-80's + Honda motorcycle you'll know all about this problem as they all burn reg/recs on a frequent basis because of this design.
That's nice , but we're talking about automotive alternators, and you simply have no idea what you're talking about there.
Every regulator design for cars since the dawn of automotive history has been a switching type regulator, simply because having an alternator run at full load with a load dump would cause it to burn out, as Honda bike owners discovered.
They were the old-school moving points type regulator first, (basically a relay, switching the field current at a set voltage) and moving to transistor-based in the 70's.
So. To reiterate for everyone on this thread, take it from a qualified auto electrician and listen up, I'm only going to say this once: Truck and car alternators *do not* run at full load all the time. A fully loaded alternator at 12V draws 4 or 5 horsepower. Do you seriously think that auto manufacturers would take that performance (and economy) hit?
So why don't the truckers just get an LPG injection setup for only a couple of grand, and get 20-30% more power/economy? 13 grand pays for a lot of LPG.
It sounds like this is some company trying to hitch a lift on the "Look at me! I'm Hydrogen Powered Eco-Friendly!" bandwagon.
So their EULA prevents you from investigating it. Big fucking deal.
Get Joe Random User to install it and agree to EULA. Get Joe Random User to agree to let *you* inspect his PC. You did not install the software or read the EULA, so you do whatever you feel like, and proceed to tell the world.
The lesson to take away is, you don't want to nudge the atmosphere out of that stable state, because once you start it may be too late to nudge it back.
Maybe it is already - permafrost in Siberia is beginning to melt, with the possibility of releasing an enormous amount of greenhouse gases. This is considered to be one of the tipping points - once that melts, opinion is that there's no going back.
They're attempting to measure the expansion and contraction of space caused by gravitational waves given off by something else. As a wave goes past, the distance between two points in space will change by some tiny amount. So, you put two detectors 90 degrees apart - that way, one detector will detect a wave but the other one at 90 degrees to it will not detect a change in length as it is stretched sideways instead of lengthways. By comparing the two, you can tell if a wave has gone past.
in order for this to work you need both 2000ft arms to be the same EXACT length.
I presume that they have some way of adusting one path - you simply adjust it to peak brightness / least inteference. Then when something happens, it'll be a different distance either way and you'll see a null, or at least a drop.
If you can't get a peak because the damn thing is jiggling all over the place, then it's working:-) and you'd take a long term average of the results to find a distance that has the highest peaked output and call that the centre baseline.
Vestfrost make some. They are super-efficient because they use loads of insulation, and can subsequently get away with small 12 compressors (actually 19VAC chopped up from 12v). Chest freezers with modified thermostats also come to mind , although they're still mains-powered.
And luxeon LED lighting would probably be the way to go - they only draw 5 watts or so tops, and you can get MR16 types that fit standard halogen sockets now.
As much as I dislike Roland's style - at least he's not linking articles via his money-making technology blog anymore. Which was the main gripe I had with him.
So now,to me, he's just another bonehead slashdot article submitter.
Slashdot Mirror
Can you easily divide a meter into 1/12ths, 1/6ths, 1/2 and 1/4 just as easily as you can into 1/10?
Do you particularly want (or need) to do that in the metric system? No.
The metric system of measurement is designed to avoid weird fractions like 1/12ths and 1/6ths, which is why such fractional amounts are not often used in the metric system. And besides, there's always that tiny bit of loss when your computer converts 1/3 or 1/6 or 1/12 to a float and back. Maybe not significant over a metre/kilo but significant when you're talking about billions of them.
Well, I know that they appear to know more than what the general cryptography community knows. For example (lifted from wikipedia, emphasis mine):
Wait. Am I missing something?
It's just a composite video signal you need to transmit?
Does it *have* to be over IP?
You seriously can't do this with normal $50 analogue 2.4GHz wireless transmitters/recievers, of which there are such a plethora of I won't even bother posting a link?
I am mystified as to what you are trying to do dragging IP into this, that's all.
It probably already is. :-/
Nothing to see here, move along now.
Well, if you're on a vendetta there's no point doing it half-assed I guess.
give/sell these to people thinking that they need these more then food, water, and shelter.
You give/sell these to people with half of the 1GB space loaded with text files on how to bootstrap themselves up to a higher standard of living.
Instructions on how to build water filters, decent sanitary facilities, preserve food, basic ammonia-cycle absorbtion icemakers, simple home power setups, crop growing/rotation, etc. Check out ITDG Technical Briefs (cached, the sites b0rked at the moment) - a laptop loaded with those files suddenly becomes pretty interesting to people. That's the kind of stuff that people will hopefully have access to once they get one of these. From all the billions spent on trying to improve their living conditions, it's all too obvious that we can't pull them out of the shit - they've got to learn to do it themselves. Laptops such as these could be the thing to help them do it.
It was a joke!
Everyone got it , except Pauline it seems.
I remember listening to the ABC (er, the Australian ABC) Radio National one day, and they were supposed to cut to some other place they were broadcasting. Instead I heard a engineer somewhere saying "hey there uplink 2 we're just going to send you some promos in the break", followed by a couple of 30 second promos and a bit of idle chatter between the two studios .... until one of them said "ooops. This thing's still synced up..."
The new studio patched in recovered pretty well, just said something along the lines of, "Ahahaha. Just a little insight into the life of a radio guy.... and now back to our schedule."
Suppose someone tries to make decisisions about how to handle their health from 2 measurements taken just seconds apart?
Really, depends if you're having a heart attack or not.
Medic 1: "Nah, look he's fine, his long-term yearly heart rate has only dropped 0.05%"
Medic 2: "But he's turning blue... and he's stopped thrashing about!"
Medic 1: "Look,long term averages show that this is just a minor blip. He'll be up and about in no time!"
What makes you think bird flu will spread when everyone knows about it? SARs never got here.
The incubation period, coupled with international flights to everywhere from everywhere else.
Does he read slashdot? Force him into a bet now! Provoke him a bit first, it'll make him bet something outlandish :-)
You use something like - it basically splits your data into blocks and then you can define the amount of redundancy you like.
So say you have a file and running it through par2 with 50% redundancy gives you 100 blocks. All you need at a later date is 50 (any 50) of those blocks and you can recreate the file.
That is the whole point of doing an optical recording on a permanent media like DVDR, the recording will be stable as long as the substrate is stable.
So tell me, how long does "permanent" DVD-R Media last? No-one can tell for sure. All the dyes age with time, you get reflectivity issues, etc.
And as the GP said, as your need for backup storage increases over the years, you keep buying newer drives of larger capacity, relegating the old ones to the scrap heap (or just kept as old snapshots). So you only keep a drive until it's full and the wonderful march of technology allows to buy a new drive next year with another 50% storage, for the same price.
And simply the convenience of large data storage on a single drive is something to consider. I've 200GB of data. That's quite a few DVD's that I'd have to burn. And burn again, and again, and again, over the years because I'm unsure of DVD life. It would likely be more cost-effective for me to buy a new drive every second year, than to buy the media and spend the time to burn all my data to DVD.
That's the great thing about English - you can verb any noun you like and get away with it.
It'll be great! Kinda of like the UN!
If you've ever owned a mid-80's + Honda motorcycle you'll know all about this problem as they all burn reg/recs on a frequent basis because of this design.
That's nice , but we're talking about automotive alternators, and you simply have no idea what you're talking about there.
Every regulator design for cars since the dawn of automotive history has been a switching type regulator, simply because having an alternator run at full load with a load dump would cause it to burn out, as Honda bike owners discovered.
They were the old-school moving points type regulator first, (basically a relay, switching the field current at a set voltage) and moving to transistor-based in the 70's.
So. To reiterate for everyone on this thread, take it from a qualified auto electrician and listen up, I'm only going to say this once:
Truck and car alternators *do not* run at full load all the time.
A fully loaded alternator at 12V draws 4 or 5 horsepower. Do you seriously think that auto manufacturers would take that performance (and economy) hit?
So why don't the truckers just get an LPG injection setup for only a couple of grand, and get 20-30% more power/economy? 13 grand pays for a lot of LPG.
It sounds like this is some company trying to hitch a lift on the "Look at me! I'm Hydrogen Powered Eco-Friendly!" bandwagon.
So their EULA prevents you from investigating it. Big fucking deal.
Get Joe Random User to install it and agree to EULA.
Get Joe Random User to agree to let *you* inspect his PC.
You did not install the software or read the EULA, so you do whatever you feel like, and proceed to tell the world.
Tada! Obnoxious EULA bypassed.
The lesson to take away is, you don't want to nudge the atmosphere out of that stable state, because once you start it may be too late to nudge it back.
Maybe it is already - permafrost in Siberia is beginning to melt, with the possibility of releasing an enormous amount of greenhouse gases. This is considered to be one of the tipping points - once that melts, opinion is that there's no going back.
They're attempting to measure the expansion and contraction of space caused by gravitational waves given off by something else. As a wave goes past, the distance between two points in space will change by some tiny amount. So, you put two detectors 90 degrees apart - that way, one detector will detect a wave but the other one at 90 degrees to it will not detect a change in length as it is stretched sideways instead of lengthways. By comparing the two, you can tell if a wave has gone past.
:-)
Or so the theory goes
in order for this to work you need both 2000ft arms to be the same EXACT length.
:-) and you'd take a long term average of the results to find a distance that has the highest peaked output and call that the centre baseline.
I presume that they have some way of adusting one path - you simply adjust it to peak brightness / least inteference. Then when something happens, it'll be a different distance either way and you'll see a null, or at least a drop.
If you can't get a peak because the damn thing is jiggling all over the place, then it's working
I've never heard of a super-efficient fridge...
;-)
Then you haven't looked hard enough
Vestfrost make some. They are super-efficient because they use loads of insulation, and can subsequently get away with small 12 compressors (actually 19VAC chopped up from 12v). Chest freezers with modified thermostats also come to mind , although they're still mains-powered.
And luxeon LED lighting would probably be the way to go - they only draw 5 watts or so tops, and you can get MR16 types that fit standard halogen sockets now.
As much as I dislike Roland's style - at least he's not linking articles via his money-making technology blog anymore. Which was the main gripe I had with him.
,to me, he's just another bonehead slashdot article submitter.
So now
Do you think they'll have a mass debate over the SCAT act?
(snigger)
A rubber hammer - you lack ambition. A 4lb bricklayers hammer works far better.
:-)
A rubber mallet is excellent for "steath" drive warranty replacement though.
It leaves no marks