"Except that the guy who "only stole an iPhone" probably did a lot more."
Yup - and following up on small stuff leads to bigger stuff often enough to be worthwhile (if you can do big stuff why would you stop at small stuff?)
The Yorkshire Ripper was apprehended because a cop noticed that the car he was driving had registration plates which were in a number range reserved for heavy vehicles (stolen, of course). The guy had eluded police tracking him by his forensic/murder trail for _years_ and catching a lucky break was the way the case was solved.
Venus and mars are hopeless for long-term Terraforming. Mars mostly lost its atmosphere due to solar wind ablation and Venus will lose its the same way eventually. No matter how established we ever got there, we'd have to live close to radiation shelters for the inevitable solar burps due to the same reason the atmospheres are doomed - no magnetophere to divert the solar wind around the atmosphere.
Adding more water to Venus would probably make the atmosphere worse and even if that managed to be cleared the unfeasibly long day would make it a hellhole of unimaginable proportions.
Once you've estabilshed an economy in space, going back down a gravity well isn't high on the list of priorities. Raw materials and energy are fairly readily available without mining the moon.
"that has a half life that will probably outlive humanity"
The dangerous emitters (mostly cobalt and friends) will be 99% gone in 300 years and after that you have primarily plutonium/uranium, which by themselves aren't particularly hot.
Our descendants won't thank us for putting useful fuel under millions of tons of salt..
As it stands those rods have only had ~1% of their potential energy extracted before being declared "useless"
There are plenty of non-charged-crankshaft 2 stroke designs around. If you use an external supercharger (or turbo driven off exhaust pressure) you don't need to use crankcase pressure.
Writing off 2 strokes because _one_ design is polluting is a bad idea.
"Without a crankshaft there isn't any side load put on the cylinder either, so that experiences less friction too."
There are alternatives to cranks which don't produce sideloads on the piston/cylinder. The best also extract more 30% energy from the stroke as they're not subject to cosine rules.
Downside: hideous mechanical complexity. They've been tested and work, but they require the bottom end be a lot more complex than it is now.
The simplest is simply a straight rod connected to the piston which attaches to the crank rod via a silder - these are commonly used in ships and large stationary engines, but they increase the height of the engine by _at least_ the length of the piston stroke and they don't give any mechanical advantage over a standard crankshaft setup.
There's also the scotch yoke, but it's not wonderful under high loads.
"Current supercapacitors don't have enough energy storage density to take the place of batteries"
No, but they can be (and are) used to smooth out charge/discharge. They're great for catching things like regenerative braking and returning it to the motors when needed or trickling to the battery if not, which saves battery life and reduces heat losses from a battery's chemical reactions.
There's more to it than that. Even without exports, the fracking bubble is declining rapidly and too many wells have depressed the price beyond economic sustainability (ie, much gas is being sold at a net loss). I'm surprised that producers haven't switched off their taps in the hope that prices would go up.
Opening dozens of parallel connections to a target if there are multiple recipients instead of using multiple RCPT TO:, and SMTP streaming for multiple messages amounted to a Denial of service attack on larger mailservers.
In postal terms the postman is carrying a 165mm breaching cannon and is intoning "the mail MUST get through" as he blasts new holes in your structure to take the shortest possible path.
The point about CGN is that it's a way of ipv6 users contacting ipv4 sites - OUTSIDE the network doing CGN.
If there are only a few popular ipv4 sites left and the vast majoritty of users are on ipv6 then it may be cheaper for the companies running the CGN kit to pay those ipv4 sites to get up to ipv6 speed, than to keep running the CGN gear (this is unlikely to happen, mostly CGN operators will just switch off the nat units and the ipv4 sites will adapt or die)
$orkplace (A large UK university) has gone from "we don't plan to deploy ipv6 this decade, ipv4 will be fine until then" to "we need to get ipv6 working in the next 12 months" - I think it finally sunk in that the reason for going to IPv6 when everyone else does is mainly because if you don't, you drop off the radar of those who are ipv6 only.
Many many organisations (including large ISPs) have the attitude "we've got all the ipv4 we need, we're ok" and are going to face a world of hurt when they find that they can't talk to ipv6 networks. ISPs in particular will have to get themselves sorted - quickly - or face losing customers. (Several UK ISPs are _still_ providing ipv4-only DSL units to their endusers)
CGN is already in heavy use for mobile phone networks. My logs show that most accesses to local resources coming from the big wireless carriers in the UK only come from a handful of IP addresses, but there are thousands of users behind them. It's causing a particular problem with ssh sessions as they're running very short idle timers before breaking the NAT.
(Let's not even go into the FUD being spread about ipv6 firewalling being harder than ipv4...)
Yup. I've been beating my head against carrier NATing for 15 years (it's been common in SE asia for a long time as a cheapskate way of getting IP space). It breaks a lot of stuff.
If "Internet" == http, then CGN works. For just about everything else it breaks.
Airline pilots were always paid shit until they got the big gigs.
I knew pilots who got scurvy during their early years because the pay was so bad they couldn't eat properly. Most of them lived at the airport or aero club canteen grabbing any job they could get, etc.
I saw a small bolide pass directly overhead 35 years ago. It got no news coverage at all, quite possibly noone else saw it (town of 80k people in a sparsely populated country with ocean close by - what are the odds of more than one person looking up in the 2-3 seconds it passed over?)
In 1998 (same country) a medium sized bolide passed over the country, narrowly missing an airliner and exploded over ocean. Other than the pilots only 4 people on the ground saw it.
It's been said repeatedly by many NK escapees that the supply of ammunition is strictly controlled because the first bullets fired by any conscripts in the event of any hostility would most likely be through the heads of the officers commanding the conscripts.
Same applies to all those weapons dug in facing South. Unless concreted in position they can easily be turned around - and I assume they're all pretty well pinpointed targets to the point where they'd be lucky to get one shot off anyway.
In the event of open warfare the most difficult thing that would be encountered is likely to be tens of thousands of NK soldiers clamouring to surrender (It is a lot harder to deal with than it sounds, as the USA found out during GW1).
At this point in proceedings, support and alliances may come from unlikely sources. NK is the world's largest source of methampetamines and can probably call on assistance from drug cartels and other criminal orgs if it needs to. The battlefields are likely to be everywhere in such an event.
McArthur was _ordered_ not to proceed beyond a certain point (about 50 miles from the chinese border) and did so anyway. He drove the NK forces over the river into china and that's when the chinese got so uncomfortable that they openly entered the war - mainly because they didn't want to be landed with all the NK refugees.
The problem with gung-ho generals is that they don't appreciate the bigger picture. An apparent opportunity for an overwhemling military victory ruled out the possibility of actually ending the war by switching off chinese backing (they'd have been a lot more willing to negotiate back then than they are now.)
"They don't turn the N.K. refugees back either, so once again not an ally."
Actualy they do.
NKs found in China without the right paperwork (ie, refugees) face immediate deportation back to NK (at which point they and their families face punishment in NK Gulags), so they have to keep a _very_ low profile and get out of china as quickly/quietly as possible - generally that involves a long and complicated trip across China (which is about the size of the United States) and sneaking over borders on the southwestern edge - which exposes them to more trigger-happy border guards.
Russia doesn't want the NK refugees either and will happily ship 'em back over the border too.
Once out of China they usually end up in SK, but as noted many have a hard time integrating - a lot of the time it's due to the realisation that whilst they have promised to go back and get more of the fmaily, many left behind are so frail they wouldn't survive the privations of getting across China, so they will never be seen again.
Let's not forget the Quantity Surveyor, whose job it is to notice _and minimise_ excess materials being used, in order to save money.
The results of this kind of tactic are predictable - such as a 5 floor library building being unable to hold any usable quantities of books on its upper 3 floors thanks to a QS who noticed the building was being made "far too stongly"(*) and downgraded the specs without bothering to feed that back up the engineering chain.
(*)correct if it was an office building but bookshelves have a _much_ higher overall floor loading than desks.
Slashdot Mirror
"Except that the guy who "only stole an iPhone" probably did a lot more."
Yup - and following up on small stuff leads to bigger stuff often enough to be worthwhile (if you can do big stuff why would you stop at small stuff?)
The Yorkshire Ripper was apprehended because a cop noticed that the car he was driving had registration plates which were in a number range reserved for heavy vehicles (stolen, of course). The guy had eluded police tracking him by his forensic/murder trail for _years_ and catching a lucky break was the way the case was solved.
Pressurised, so that if something goes wrong, you can get a steam explosion.
Not to mention that high temperature pressurised water is fairly corrosive.
PWRs were ok for their time but there are better ways of doing it which aren't subject to overheating or going "fooooof" without constant supervision.
Venus and mars are hopeless for long-term Terraforming. Mars mostly lost its atmosphere due to solar wind ablation and Venus will lose its the same way eventually. No matter how established we ever got there, we'd have to live close to radiation shelters for the inevitable solar burps due to the same reason the atmospheres are doomed - no magnetophere to divert the solar wind around the atmosphere.
Adding more water to Venus would probably make the atmosphere worse and even if that managed to be cleared the unfeasibly long day would make it a hellhole of unimaginable proportions.
Once you've estabilshed an economy in space, going back down a gravity well isn't high on the list of priorities. Raw materials and energy are fairly readily available without mining the moon.
"that has a half life that will probably outlive humanity"
The dangerous emitters (mostly cobalt and friends) will be 99% gone in 300 years and after that you have primarily plutonium/uranium, which by themselves aren't particularly hot.
Our descendants won't thank us for putting useful fuel under millions of tons of salt..
As it stands those rods have only had ~1% of their potential energy extracted before being declared "useless"
And feed 'em to a molten salt reactor. :)
That'd cut high level waste by "SomeUngodlyNumber"
There are plenty of non-charged-crankshaft 2 stroke designs around. If you use an external supercharger (or turbo driven off exhaust pressure) you don't need to use crankcase pressure.
Writing off 2 strokes because _one_ design is polluting is a bad idea.
"Without a crankshaft there isn't any side load put on the cylinder either, so that experiences less friction too."
There are alternatives to cranks which don't produce sideloads on the piston/cylinder. The best also extract more 30% energy from the stroke as they're not subject to cosine rules.
Downside: hideous mechanical complexity. They've been tested and work, but they require the bottom end be a lot more complex than it is now.
http://www.shelleys.demon.co.u...
http://www.wisemanengine.com/a...
http://www.scalzoautomotiveres...
The simplest is simply a straight rod connected to the piston which attaches to the crank rod via a silder - these are commonly used in ships and large stationary engines, but they increase the height of the engine by _at least_ the length of the piston stroke and they don't give any mechanical advantage over a standard crankshaft setup.
There's also the scotch yoke, but it's not wonderful under high loads.
http://en.wikipedia.org/wiki/S...
Not to mention that inclines where it'll ber a problem will also slow trucks right down too and therefore usually have crawler lanes.
"Current supercapacitors don't have enough energy storage density to take the place of batteries"
No, but they can be (and are) used to smooth out charge/discharge. They're great for catching things like regenerative braking and returning it to the motors when needed or trickling to the battery if not, which saves battery life and reduces heat losses from a battery's chemical reactions.
There's more to it than that. Even without exports, the fracking bubble is declining rapidly and too many wells have depressed the price beyond economic sustainability (ie, much gas is being sold at a net loss). I'm surprised that producers haven't switched off their taps in the hope that prices would go up.
_almost_
His approach to mail was downright abusive.
Opening dozens of parallel connections to a target if there are multiple recipients instead of using multiple RCPT TO:, and SMTP streaming for multiple messages amounted to a Denial of service attack on larger mailservers.
In postal terms the postman is carrying a 165mm breaching cannon and is intoning "the mail MUST get through" as he blasts new holes in your structure to take the shortest possible path.
Forgot to say: ARIN disapproval or not is not "regulatory". They can't legislate CGN out of existance, merely ask that carriers don't use it.
The point about CGN is that it's a way of ipv6 users contacting ipv4 sites - OUTSIDE the network doing CGN.
If there are only a few popular ipv4 sites left and the vast majoritty of users are on ipv6 then it may be cheaper for the companies running the CGN kit to pay those ipv4 sites to get up to ipv6 speed, than to keep running the CGN gear (this is unlikely to happen, mostly CGN operators will just switch off the nat units and the ipv4 sites will adapt or die)
$orkplace (A large UK university) has gone from "we don't plan to deploy ipv6 this decade, ipv4 will be fine until then" to "we need to get ipv6 working in the next 12 months" - I think it finally sunk in that the reason for going to IPv6 when everyone else does is mainly because if you don't, you drop off the radar of those who are ipv6 only.
Many many organisations (including large ISPs) have the attitude "we've got all the ipv4 we need, we're ok" and are going to face a world of hurt when they find that they can't talk to ipv6 networks. ISPs in particular will have to get themselves sorted - quickly - or face losing customers. (Several UK ISPs are _still_ providing ipv4-only DSL units to their endusers)
CGN is already in heavy use for mobile phone networks. My logs show that most accesses to local resources coming from the big wireless carriers in the UK only come from a handful of IP addresses, but there are thousands of users behind them. It's causing a particular problem with ssh sessions as they're running very short idle timers before breaking the NAT.
(Let's not even go into the FUD being spread about ipv6 firewalling being harder than ipv4...)
Yup. I've been beating my head against carrier NATing for 15 years (it's been common in SE asia for a long time as a cheapskate way of getting IP space). It breaks a lot of stuff.
If "Internet" == http, then CGN works. For just about everything else it breaks.
CGN is bloody expensive to implement and keep running - far more expensive than getting IPv6 allocations.
At some point CGN operators would end up _paying_ large IPv4 holdouts to go to IPv6 because it's cheaper than letting the status quo continue.
clawing back the various underused /8s would gain a few months at best. It's not worth the hassle.
Mainly becvause IPv4 was a kludge only intended to last 5-10 years.
Airline pilots were always paid shit until they got the big gigs.
I knew pilots who got scurvy during their early years because the pay was so bad they couldn't eat properly. Most of them lived at the airport or aero club canteen grabbing any job they could get, etc.
And they don't always explode.
I saw a small bolide pass directly overhead 35 years ago. It got no news coverage at all, quite possibly noone else saw it (town of 80k people in a sparsely populated country with ocean close by - what are the odds of more than one person looking up in the 2-3 seconds it passed over?)
In 1998 (same country) a medium sized bolide passed over the country, narrowly missing an airliner and exploded over ocean. Other than the pilots only 4 people on the ground saw it.
> But how capable would those reservist truly be?
It's been said repeatedly by many NK escapees that the supply of ammunition is strictly controlled because the first bullets fired by any conscripts in the event of any hostility would most likely be through the heads of the officers commanding the conscripts.
Same applies to all those weapons dug in facing South. Unless concreted in position they can easily be turned around - and I assume they're all pretty well pinpointed targets to the point where they'd be lucky to get one shot off anyway.
In the event of open warfare the most difficult thing that would be encountered is likely to be tens of thousands of NK soldiers clamouring to surrender (It is a lot harder to deal with than it sounds, as the USA found out during GW1).
At this point in proceedings, support and alliances may come from unlikely sources. NK is the world's largest source of methampetamines and can probably call on assistance from drug cartels and other criminal orgs if it needs to. The battlefields are likely to be everywhere in such an event.
McArthur was _ordered_ not to proceed beyond a certain point (about 50 miles from the chinese border) and did so anyway. He drove the NK forces over the river into china and that's when the chinese got so uncomfortable that they openly entered the war - mainly because they didn't want to be landed with all the NK refugees.
The problem with gung-ho generals is that they don't appreciate the bigger picture. An apparent opportunity for an overwhemling military victory ruled out the possibility of actually ending the war by switching off chinese backing (they'd have been a lot more willing to negotiate back then than they are now.)
"Every government loves a boogeyman, and an insane pipsqueak dictator is frightening all out of proportion to his actual threat."
Yup, which is why it's handy to keep Iran and NK in business.
"They don't turn the N.K. refugees back either, so once again not an ally."
Actualy they do.
NKs found in China without the right paperwork (ie, refugees) face immediate deportation back to NK (at which point they and their families face punishment in NK Gulags), so they have to keep a _very_ low profile and get out of china as quickly/quietly as possible - generally that involves a long and complicated trip across China (which is about the size of the United States) and sneaking over borders on the southwestern edge - which exposes them to more trigger-happy border guards.
Russia doesn't want the NK refugees either and will happily ship 'em back over the border too.
Once out of China they usually end up in SK, but as noted many have a hard time integrating - a lot of the time it's due to the realisation that whilst they have promised to go back and get more of the fmaily, many left behind are so frail they wouldn't survive the privations of getting across China, so they will never be seen again.
Except that PWC (and others) _were_ found to be skewing things.
Let's not forget the Quantity Surveyor, whose job it is to notice _and minimise_ excess materials being used, in order to save money.
The results of this kind of tactic are predictable - such as a 5 floor library building being unable to hold any usable quantities of books on its upper 3 floors thanks to a QS who noticed the building was being made "far too stongly"(*) and downgraded the specs without bothering to feed that back up the engineering chain.
(*)correct if it was an office building but bookshelves have a _much_ higher overall floor loading than desks.