15 years ago with a laser across Cayuga Lake...
on
When A Cable Dies
·
· Score: 2
(Tommy; are you out there?;-)
A buddy of mine (who works with lasers for his research) about 15 years ago had LOS between his house on the west side of Cayuga Lake and his lab at Cornell on the east side (roughly 8 miles away). This was the days when a 9600 baud modem was the best thing going. Solution? You guessed it! IIRC, he got about 19.2 kbps out of that link (except during snowstorms;-)
Firstly, kudos to Dave Winer for getting this discussion going.
Agreed. Let's use some of the emotion that the "All your credit cards are belong to Bill" MS Passport ploy is bringing out to good effect. Winer is a high profile guy to bring this to mainstream attention, and will undoubtedly contribute ideas too.
Also, please understand that the discussion and design issues around such a system have been maturing for quite some time (at least a year in public, and some small number of years prior to that privately) over at xns.org. How does a legally enforcable privacy contract between yourself and any entity wishing to use your data stored on the XNS server strike you? Put contract law on your side, for once.
AFAIK, that means "get those damn packets off of *our* network and onto the network that's getting revenue from them ASAP".
Corrolary: All networks/backbones must have sufficiently redundant internal routes, or traffic touching any one of them may suffer the "constipated router syndrome".
Undoubtedly, the above is vastly oversimplified. However, I think it's correct to zeroth order.
Boardwatch (back issues) is a good place to read about further ramifications...
Look, the SFgate article dates the meteorite to have hit 4.6 bya, but the magnetite crystals were encased in carbon from 3.9 bya. Assuming this is true, how does NASA account for this.7 byr discrepancy?
They don't. According to their press release (I know, I know, another "reliable" source:-) they date at 3.9 bya.
1) Skepticism is a healthy part of the scientific method.
2) Shaking bar magnets can result in chains, but it's unlikely. A lower energy config is clumping.
(Try the experiment in 2D. Get a bunch of little bar magnets, put 'em in a shoebox, and shake. See what you get. Clumps?:-)
3) Experiments are also a healthy part of the scientific method.
A few words of caution though: I had major issues with a few of the bundled ReiserFS tools with the
2.4.0test series patches on my Debian Woody machine. Maybe they've stabilized since then, but I
ruined my filesystem trying to fix some very odd ReiserFS related errors.
To be fair, I was running tools that clearly stated they were a last resort. When they warn you not to
do something, believe it.
A quick "me too" to confirm similar problems. We've tried running reiserfs (3.6.25) over linux 2.4.0 on 3 machines at work: an SMP box running Debian woody, an SMP box running Mandrake 7.2, and an uniprocessor box running Mandrake 7.2. All 3 showed "bad i-node" whinges in their logs. All 3 were exporting their reiserfs partitions via NFS, and we think these partitions might have been under NFS activity when the i-node errors popped up.
One of those "last resort" tools (reiserfsck --rebuild-tree) bit me as I tried to mend the polluted partition on the woody SMP box.
To make a long story short, I lost the files on the partition (Let's hear it for backups! Especially since I also got bit by having my "quickie" backup tarball be unreadable since it was 4GB in size.:-)
We've now migrated data from all of our 2.4.0-and-reiserfs partitions back to ext2.
"Proceed, with fingers crossed."
(BTW, I *did* recommend you not try this without backups, didn't I:-)
You know, those of us who don't happen to live in the U.S.A., and who don't "benefit" from the U.S. guvment's capricious actions? Will the U.S. go to war to impose its censorship regime on us?
"The internet treats censorship as damage and routes around it."
The economics are iffy. It is absolutely being done by solar technologies (check out Home Power Magazine ; and in particular their "Guerilla Solar" Rogues Gallery, if you're really interested in sticking it to the Utility companies). However, unfortunately, nobody seems to be making money (or even payback) at it. Perhaps some kind of mixture of this Fuell Cell technology, electrolytic dissociation of water, local storage of Hydrogen (metal hydride technology springs to my mind), co-generation using waste heat/coolth from the metal hydride tanks and fuel cells, renewable sources (solar, wind, hydro), and natural gas could be made to pay off. Interesting design problem for someones M.Sc., no?
In my biz (mining visualisation; you know mining as in rocks, not data:-) OpenInventor is fairly heavily used. Granted, OpenGLOptimizer is being moved to for performance reasons, but OpenInventor is still quite prevalent.
Basically, there are lots of scientific visualisation apps out there that this LGPLed release will help. As it stands, we are now only about 1 library away (ViewKit if it matters) from having the possibility to release our apps as Open Source. (No promises, as we still must convince the powers-that-be in our organisation...)
As always, I speak for myself, not my employer, yadda, yadda, yadda...
If you suspect that your extrema are periodically arrayed (i.e. like atoms in a crystal) GAs are a preferred method for Global Optimization. If you have no such info, it's really a 6-of-one half-a-dozen of the other porposition, and most will naturally prefer the style they are familiar with.
Lotsa yuppies sitting around playing daytrader when they should be working:-)
Instead, why not take your 401(k)/IRA funds, talk to a lawyer and an accountant, buy some solar panels, and connect to the grid? Keep investing every paycheck, take the excess production and sell it back to the (deregulated) grid.
I'd bet you could make 5-6% on your money easily (+++, once you get to the exponential part, and panels come down in price; this is *real* productivity, BTW, not just "paper profits" on the bloody stockmarket), and HELP TO SAVE THE PLANET at the same time.
(No, I haven't done this myself yet, but I am extremely interested...)
Slashdot Mirror
(Tommy; are you out there? ;-)
;-)
A buddy of mine (who works with lasers for his research) about 15 years ago had LOS between his house on the west side of Cayuga Lake and his lab at Cornell on the east side (roughly 8 miles away). This was the days when a 9600 baud modem was the best thing going. Solution? You guessed it! IIRC, he got about 19.2 kbps out of that link (except during snowstorms
True story...
(We don't need no triple redundancy...)
Agreed. Let's use some of the emotion that the "All your credit cards are belong to Bill" MS Passport ploy is bringing out to good effect. Winer is a high profile guy to bring this to mainstream attention, and will undoubtedly contribute ideas too.
Also, please understand that the discussion and design issues around such a system have been maturing for quite some time (at least a year in public, and some small number of years prior to that privately) over at xns.org. How does a legally enforcable privacy contract between yourself and any entity wishing to use your data stored on the XNS server strike you? Put contract law on your side, for once.
Numerically.
Funny thing they used a supercomputer, no?
(What's that? You wanted an analytic solution????)
Enough said?
AFAIK, that means "get those damn packets off of *our* network and onto the network that's getting revenue from them ASAP".
Corrolary: All networks/backbones must have sufficiently redundant internal routes, or traffic touching any one of them may suffer the "constipated router syndrome".
Undoubtedly, the above is vastly oversimplified. However, I think it's correct to zeroth order.
Boardwatch (back issues) is a good place to read about further ramifications...
They don't. According to their press release (I know, I know, another "reliable" source
Who knows where the 4.6 came from...
More-or-less. Isotope ratios more than bulk chemical composition, actually. Very diagnostic.
1) Skepticism is a healthy part of the scientific method.
:-)
2) Shaking bar magnets can result in chains, but it's unlikely. A lower energy config is clumping.
(Try the experiment in 2D. Get a bunch of little bar magnets, put 'em in a shoebox, and shake. See what you get. Clumps?
3) Experiments are also a healthy part of the scientific method.
Just ask Richard Court.
One of those "last resort" tools (reiserfsck --rebuild-tree) bit me as I tried to mend the polluted partition on the woody SMP box.
To make a long story short, I lost the files on the partition (Let's hear it for backups! Especially since I also got bit by having my "quickie" backup tarball be unreadable since it was 4GB in size. :-)
We've now migrated data from all of our 2.4.0-and-reiserfs partitions back to ext2.
"Proceed, with fingers crossed."
(BTW, I *did* recommend you not try this without backups, didn't I :-)
You know, those of us who don't happen to live in the U.S.A., and who don't "benefit" from the U.S. guvment's capricious actions? Will the U.S. go to war to impose its censorship regime on us?
"The internet treats censorship as damage and routes around it."
The economics are iffy. It is absolutely being done by solar technologies (check out Home Power Magazine ; and in particular their "Guerilla Solar" Rogues Gallery, if you're really interested in sticking it to the Utility companies). However, unfortunately, nobody seems to be making money (or even payback) at it. Perhaps some kind of mixture of this Fuell Cell technology, electrolytic dissociation of water, local storage of Hydrogen (metal hydride technology springs to my mind), co-generation using waste heat/coolth from the metal hydride tanks and fuel cells, renewable sources (solar, wind, hydro), and natural gas could be made to pay off. Interesting design problem for someones M.Sc., no?
In my biz (mining visualisation; you know mining as in rocks, not data :-) OpenInventor is fairly heavily used. Granted, OpenGLOptimizer is being moved to for performance reasons, but OpenInventor is still quite prevalent.
Basically, there are lots of scientific visualisation apps out there that this LGPLed release will help. As it stands, we are now only about 1 library away (ViewKit if it matters) from having the possibility to release our apps as Open Source. (No promises, as we still must convince the powers-that-be in our organisation...)
As always, I speak for myself, not my employer, yadda, yadda, yadda...
Ooops. I forgot to mention the implication:
:-)
If you suspect that your extrema are periodically arrayed (i.e. like atoms in a crystal) GAs are a preferred method for Global Optimization. If you have no such info, it's really a 6-of-one half-a-dozen of the other porposition, and most will naturally prefer the style they are familiar with.
YMMV
...while SAs search in random directions.
Other than that not a whole lot...
(I've only seen this mentioned in an obscure thesis once, but I firmly believe it should be a permanent part of the Global Optimization folklore.)
Congratulations to all involved.
Errm, what about retirement funds?
:-)
Lotsa yuppies sitting around playing daytrader when they should be working
Instead, why not take your 401(k)/IRA funds, talk to a lawyer and an accountant, buy some solar panels, and connect to the grid? Keep investing every paycheck, take the excess production and sell it back to the (deregulated) grid.
I'd bet you could make 5-6% on your money easily (+++, once you get to the exponential part, and panels come down in price; this is *real* productivity, BTW, not just "paper profits" on the bloody stockmarket), and HELP TO SAVE THE PLANET at the same time.
(No, I haven't done this myself yet, but I am extremely interested...)