How can your eye tell the difference between a photon which came from far away, and a photon that came from near you? Answer, it can't.
I'm not an optics expert, but there are a few things I can think of. Just my guessing, don'r know if any of these are right.
First, the near source will slew around as you move your head (but not your eyeball). While far away sources may move, they generally don't don't track with the movement of your your head and body, and this parallax movement is one of the depth cues your brain uses. And since the glasses aren't screwed to your skull, there may be some additional slight motion added based on the motion of the glasses themselves (aside from actually shifting on your face, the skin and soft tissues they're sitting on are elastic, and the glasses have some inertia). Come to think of it, the fact that your eyeball moves might be important, too -- you are close enough that you can no longer consider the pupil to be a point-size opening, from the perspective of your projector.
Second, you've got two eyes, so any (single) near source trying to mimic a far-focused object is going to end up sending conflicting info to your brain regarding its position.
Third, the projector of your glasses probably isn't an optically perfect emitter. There will be some optical imperfections, reflections off internal optical elements and such, that could cause artifacts that your brain might recognize as being from a near source.
Putting your router and DSL/Cablemodem on an UPS works wonders for stability, too. After I put one in for my father, his Linksys router went for an entire year without a reboot (and even then only because I needed to unplug it to move some cables around).
One is that the Korean people are racially superior to others; their naturally superior, child-like nature is why they've been repeatedly conquered in the past. Kim is their mother-protector who gently guides them while sheltering them from the evil, corrupt world outside. They are encouraged from a young age not to think about things, merely to embrace their instincts and emotional reactions; as the naturally most superior race, their instincts are pure and right and thinking too much can lead them astray.
The question -- as it always is -- is: What is the operating temperature range for this material? Because if it's still "refrigerate or die", applications will not expand much beyond where they are today.
I don't have a subscription to Nature Materials, but squinting at the thumbnail graphs available for free, looks like the transition temperature is somewhere around 17-24 Kelvin. As far as I can tell, main advance here is in improving Critical Current Density and Irreversibility Field limits.
Perhaps if you could identify where this was happening, it could be remediated by pumping in a slurry containing solids that would lock in place and resist leaching like coal ash and some kinds of sand?
It's called Grouting. There was a highway improvement project back where I used to live (in Pennsylvania), involving lots of construction over porous Limestone formations. Extensive grouting was required to stablize the ground, which apparently cost quite a bit while also delaying the project.
yes it is, do you know how much money your doctor can make by adding this to your routine blood work?
If you're seeing an independent family doctor? Not much, and maybe nothing. He/She can charge you for the blood draw (if done at the office), and can charge you for a follow-up office visit to discuss results, if you come back for that. But your family doc doesn't receive any share of the test fee or ensuing referrals, as that would be considered an kickback (illegal).
Note that there are some situations where the kickback prohibition on tests can be bypassed, however. If your doc's office does the testing right there, they can charge you for it (probably doesn't apply to sequencing, at least not yet). If you have a test performed at a physician-owned hospital, your doctor can also profit personally (this tends to be more of a problem when seeing high-end specialists).
More common is the situation where the hospital owns the physician (that is, the physician's practice) -- technically the doc has liberty to refer you elsewhere, but there may be pressure from management to stay in-system. But this situations would tend to apply more to tests that might be actually performed at a hospital, like a CT scan or an Echocardiogram; if your doc send you to an outside lab service like Quest or LabCorp, he won't see any of that money.
Yes, you do sound illogical, and a bit incoherent. You buy one class of cards because they are cheaper and smile at you? Class 10 cards are faster, which is what makes them Class 10 and not Class 6, though I've never seen one smile, so maybe you're onto something.
The problem is, many Class 10 cards boosted their ratings by over-optimizing for long sequential reads/writes, causing random-read/write speeds to suffer. I think the gap has shrunk with newer Class 10 cards, but a few years ago the effect was pretty dramatic. Lower-class cards could be significantly faster for non-contiguous workload patterns (such as running apps directly from a card):
Intel briefly sold a discrete gpu back in the early days of agp but it was a failure in the market and since then they seem to have decided to sell their GPU techology as an integrated component of their platform (previously in the northbridge, now in the CPU).
That was the i740, and I think there's one buried in the back of my closet somewhere (a Real3D Starfighter card). The 3D image quality was quite good, and drivers were reasonably stable (at least by the time I bought mine). However, in terms of FPS, it was outclassed before it even hit the market.
In what way? Mythbusters use the scientific method to test claims. They measure, experiment, collect data on a variety of scenarios - controlling and testing different variables on each pass - and report on their findings.
Very enjoyable when they use their approach to prove a myth is possible. But when a Myth is proclaimed to be "busted"? Often, they ignore the particular assumptions and constraints of their particular implementation of the tested Myth, for the purpose of making broad sweeping claims of impossibility -- just so they can wrap up the show with a nice sound bite.
If they were a little more humble about their own limitations, I would accept it as an example of the difficulty in proving a negative. Instead, they turn it into an unintentional parody of Bad Inductive Reasoning.
"When an elderly and distinguished scientist tells you that something is possible, he is very probably right. When he tells you that something is impossible, he is very probably wrong" - Arthur C. Clarke.
The article didn't make too much sense at first, as human acetaldhyde dehydrogenases are located either in the cytosol or mitochondria; vaccine-stimulated antibodies would not be expected to be able to block the enzyme's activity. A gene-therapy agent would be able to accomplish the task, however.
Fans are unique the Surface, but I've yet to own a laptop where the fan was the first component to give.
Twice I've replaced fans in my laptop -- not because they failed (both times they were still spinning), but because the bearings had become distractingly noisy. Then again, this was a DTR machine (higher thermal load) which I used continuously for some 6-7 years, and then intermittently used for another 3 years after that.
For a while now, the mega-Providers have been threatening internet-based companies (like Google), seeing them as freeloaders making money off "their" pipes (never mind that as subscribers, we pay ISPs a monthly fee for them to get to Google's stuff, not their own crappy content portals). Being able to hold the last mile hostage -- that's the driver behind the lobbying campaigns against net-neutrality.
It's also the driver behind Google Fiber. Google doesn't have to actually build it out everywhere to be effective as a threat; they just need to make the ISPs realize they are not as indispensable as they think. Likewise, this dynamic handily explains which companies you can expect to be for/against Whitespace wireless technology.
a wee problem though, Venus has lost 99.9% of its water (we know from its probe-measured D/H ratio). usless you're suggesting we collide frozen water balls into it.
Coincidentally, that also happens to be one of the ideas floating around regarding how to get rid of the excess Venusian atmosphere -- using multi-gigaton comet impacts to literally blow it off, explosively accelerating the impact area beyond escape velocity.
Toshiba's hybrid hard drive is already in mass production (the MQ01ABDH model, in 750GB and 1TB sizes), but it's OEM only. Right now you pretty much have to buy a new Toshiba laptop to get one. Western Digital seems to have pushed theirs back into 2014.
Well, there are also the hybrid drives from Samsung that came out back in 2007, but I don't think anyone's counting those.
In November, Lytro, the maker of the first light field camera for consumers, upgraded its viewer software to enable a feature called 'Perspective Shift.' In addition to refocusing pictures after they've been taken, Lytro audiences can now pivot between different virtual points of view, within a narrow baseline.
It sounds like the techniques Lytro uses could make for a really good Borescope/Endoscope. Imagine being able to virtually shift your view to get another perspective (even if only a few millimeters), without moving your scope. If you could process the shifting fast enough, you might use it as a way to compensate for the motion of a beating heart or moving probe. Or upon reviewing a recording, re-focusing on a newly-found item of interest, even after you've pulled your scope out of the patient.
It might also be used to build a compact yet superior type of Fundus Camera -- current cameras are often rather bulky things. The Lytro has a single aperture, yet might be capable of imagine the retina in 3-D (it is a multi-layered structure). The light field info might even allow you to compensate for some kinds of cornea or lens aberration.
Yes, yes, the chainsaw is impressive in a crude sort of way. But everyone knows the finest Killbots must be equipped with a machine gun. And Lotus Notes.
"...maximum photosynthetic efficiencies cannot be higher than 5.5% in theory, and in practice achieving efficiencies of 1 or 1.5% are exceptional".
However, this statement applies only to algae-based biofuels, and the discrepancy appears to be due to the current difficulty in dealing with real-life algae culture problems.
"...the maximum conversion efficiencies of solar radiation into biomass are 4.6% (C3) and 6.0% (C4) at 30C......The highest solar energy conversion efciency reported for C3 crops is about 2.4% and about 3.7% for C4 crops across a full growing season based on solar radiation intercepted by the leaf canopy."
"These observed solar energy conversion efficiencies noted above for C3 and C4 crops, while well below the theoretical maximums that we computed in Figure 2, are nevertheless threefold to fourfold larger than the average conversion efficiency attained for major crops in the U.S."
The same thing happened to me, and the anti harassment laws were useless to help. Here's why - the anti harassment laws only protect the person they are looking for. Since you are not the person they are looking for, they can call your number as often as they like - you can't request they stop, since you aren't the person with the debt.
Hmm... in that case, since it is a call of a commercial nature, and you do not have a pre-existing business relationship with them (since you are in no way related to the actual debtor), can you go after them through the anti-telemarketer laws?
Slashdot Mirror
How can your eye tell the difference between a photon which came from far away, and a photon that came from near you? Answer, it can't.
I'm not an optics expert, but there are a few things I can think of. Just my guessing, don'r know if any of these are right.
First, the near source will slew around as you move your head (but not your eyeball). While far away sources may move, they generally don't don't track with the movement of your your head and body, and this parallax movement is one of the depth cues your brain uses. And since the glasses aren't screwed to your skull, there may be some additional slight motion added based on the motion of the glasses themselves (aside from actually shifting on your face, the skin and soft tissues they're sitting on are elastic, and the glasses have some inertia). Come to think of it, the fact that your eyeball moves might be important, too -- you are close enough that you can no longer consider the pupil to be a point-size opening, from the perspective of your projector.
Second, you've got two eyes, so any (single) near source trying to mimic a far-focused object is going to end up sending conflicting info to your brain regarding its position.
Third, the projector of your glasses probably isn't an optically perfect emitter. There will be some optical imperfections, reflections off internal optical elements and such, that could cause artifacts that your brain might recognize as being from a near source.
shitty electricity provider.
Putting your router and DSL/Cablemodem on an UPS works wonders for stability, too. After I put one in for my father, his Linksys router went for an entire year without a reboot (and even then only because I needed to unplug it to move some cables around).
One is that the Korean people are racially superior to others; their naturally superior, child-like nature is why they've been repeatedly conquered in the past. Kim is their mother-protector who gently guides them while sheltering them from the evil, corrupt world outside. They are encouraged from a young age not to think about things, merely to embrace their instincts and emotional reactions; as the naturally most superior race, their instincts are pure and right and thinking too much can lead them astray.
Pretty much a paraphrase from the dust jacket blurb of The Cleanest Race , by B.R. Myers.
From the Supplementary Materials PDF:
Tc,p = 0 Values
(STO 1.2nm / Co-doped Ba-122 13nm) x24 . . .= 17.0K .= 20.5K
(O-Ba-122 3nm / Co-doped Ba-122 20nm) x24 . = 22.3K
(O-Ba-122 3nm / Co-doped Ba-122 20nm) x16 . = 22.9K
(O-Ba-122 3nm / Co-doped Ba-122 13nm) x24 . = 22.4K
(O-Ba-122 3nm / Co-doped Ba-122 13nm) x16 . = 22.5K
Single layer Co-doped Ba-122 . . . . . . .
The question -- as it always is -- is: What is the operating temperature range for this material? Because if it's still "refrigerate or die", applications will not expand much beyond where they are today.
I don't have a subscription to Nature Materials, but squinting at the thumbnail graphs available for free, looks like the transition temperature is somewhere around 17-24 Kelvin. As far as I can tell, main advance here is in improving Critical Current Density and Irreversibility Field limits.
Also, tag for story summary: whereisthefuckingpaper
Perhaps if you could identify where this was happening, it could be remediated by pumping in a slurry containing solids that would lock in place and resist leaching like coal ash and some kinds of sand?
It's called Grouting. There was a highway improvement project back where I used to live (in Pennsylvania), involving lots of construction over porous Limestone formations. Extensive grouting was required to stablize the ground, which apparently cost quite a bit while also delaying the project.
The irony is that a song called "Isn't it Ironic?" is not about irony.
Then it's about Goldy and Bronzy, then?
yes it is, do you know how much money your doctor can make by adding this to your routine blood work?
If you're seeing an independent family doctor? Not much, and maybe nothing. He/She can charge you for the blood draw (if done at the office), and can charge you for a follow-up office visit to discuss results, if you come back for that. But your family doc doesn't receive any share of the test fee or ensuing referrals, as that would be considered an kickback (illegal).
Note that there are some situations where the kickback prohibition on tests can be bypassed, however. If your doc's office does the testing right there, they can charge you for it (probably doesn't apply to sequencing, at least not yet). If you have a test performed at a physician-owned hospital, your doctor can also profit personally (this tends to be more of a problem when seeing high-end specialists).
More common is the situation where the hospital owns the physician (that is, the physician's practice) -- technically the doc has liberty to refer you elsewhere, but there may be pressure from management to stay in-system. But this situations would tend to apply more to tests that might be actually performed at a hospital, like a CT scan or an Echocardiogram; if your doc send you to an outside lab service like Quest or LabCorp, he won't see any of that money.
Yes, you do sound illogical, and a bit incoherent. You buy one class of cards because they are cheaper and smile at you? Class 10 cards are faster, which is what makes them Class 10 and not Class 6, though I've never seen one smile, so maybe you're onto something.
The problem is, many Class 10 cards boosted their ratings by over-optimizing for long sequential reads/writes, causing random-read/write speeds to suffer. I think the gap has shrunk with newer Class 10 cards, but a few years ago the effect was pretty dramatic. Lower-class cards could be significantly faster for non-contiguous workload patterns (such as running apps directly from a card):
For instance: http://forums.anandtech.com/showpost.php?p=33007926&postcount=26
Intel briefly sold a discrete gpu back in the early days of agp but it was a failure in the market and since then they seem to have decided to sell their GPU techology as an integrated component of their platform (previously in the northbridge, now in the CPU).
That was the i740, and I think there's one buried in the back of my closet somewhere (a Real3D Starfighter card). The 3D image quality was quite good, and drivers were reasonably stable (at least by the time I bought mine). However, in terms of FPS, it was outclassed before it even hit the market.
And not really even MMO. It's more, as I understand it, like Journey.
I dunno, Journey sounds like it would extend well into the MMO playstyle, what with the Band metaphor translating directly into a party-based format.
Although there may be some job balance issues, with the "Steve Perry"-class being a little too good at soloing.
In what way? Mythbusters use the scientific method to test claims. They measure, experiment, collect data on a variety of scenarios - controlling and testing different variables on each pass - and report on their findings.
Very enjoyable when they use their approach to prove a myth is possible. But when a Myth is proclaimed to be "busted"? Often, they ignore the particular assumptions and constraints of their particular implementation of the tested Myth, for the purpose of making broad sweeping claims of impossibility -- just so they can wrap up the show with a nice sound bite.
If they were a little more humble about their own limitations, I would accept it as an example of the difficulty in proving a negative. Instead, they turn it into an unintentional parody of Bad Inductive Reasoning.
"When an elderly and distinguished scientist tells you that something is possible, he is very probably right. When he tells you that something is impossible, he is very probably wrong" - Arthur C. Clarke.
Closest thing I've been able to find thus far is this paper from 2010: Viral vectors for the treatment of alcoholism: Use of metabolic flux analysis for cell cultivation and vector production
The article didn't make too much sense at first, as human acetaldhyde dehydrogenases are located either in the cytosol or mitochondria; vaccine-stimulated antibodies would not be expected to be able to block the enzyme's activity. A gene-therapy agent would be able to accomplish the task, however.
Fans are unique the Surface, but I've yet to own a laptop where the fan was the first component to give.
Twice I've replaced fans in my laptop -- not because they failed (both times they were still spinning), but because the bearings had become distractingly noisy. Then again, this was a DTR machine (higher thermal load) which I used continuously for some 6-7 years, and then intermittently used for another 3 years after that.
My ISP? Oh, it's Comcas.....oh shit.
For a while now, the mega-Providers have been threatening internet-based companies (like Google), seeing them as freeloaders making money off "their" pipes (never mind that as subscribers, we pay ISPs a monthly fee for them to get to Google's stuff, not their own crappy content portals). Being able to hold the last mile hostage -- that's the driver behind the lobbying campaigns against net-neutrality.
It's also the driver behind Google Fiber. Google doesn't have to actually build it out everywhere to be effective as a threat; they just need to make the ISPs realize they are not as indispensable as they think. Likewise, this dynamic handily explains which companies you can expect to be for/against Whitespace wireless technology.
There's no way Dell had the only copies of those firmwares.
There's always a copy floating around out there. Question is, do you trust that copy enough to load it on your box?
a wee problem though, Venus has lost 99.9% of its water (we know from its probe-measured D/H ratio). usless you're suggesting we collide frozen water balls into it.
Coincidentally, that also happens to be one of the ideas floating around regarding how to get rid of the excess Venusian atmosphere -- using multi-gigaton comet impacts to literally blow it off, explosively accelerating the impact area beyond escape velocity.
Where are the hybrids???
Toshiba's hybrid hard drive is already in mass production (the MQ01ABDH model, in 750GB and 1TB sizes), but it's OEM only. Right now you pretty much have to buy a new Toshiba laptop to get one. Western Digital seems to have pushed theirs back into 2014.
Well, there are also the hybrid drives from Samsung that came out back in 2007, but I don't think anyone's counting those.
In November, Lytro, the maker of the first light field camera for consumers, upgraded its viewer software to enable a feature called 'Perspective Shift.' In addition to refocusing pictures after they've been taken, Lytro audiences can now pivot between different virtual points of view, within a narrow baseline.
It sounds like the techniques Lytro uses could make for a really good Borescope/Endoscope. Imagine being able to virtually shift your view to get another perspective (even if only a few millimeters), without moving your scope. If you could process the shifting fast enough, you might use it as a way to compensate for the motion of a beating heart or moving probe. Or upon reviewing a recording, re-focusing on a newly-found item of interest, even after you've pulled your scope out of the patient.
It might also be used to build a compact yet superior type of Fundus Camera -- current cameras are often rather bulky things. The Lytro has a single aperture, yet might be capable of imagine the retina in 3-D (it is a multi-layered structure). The light field info might even allow you to compensate for some kinds of cornea or lens aberration.
Yes, yes, the chainsaw is impressive in a crude sort of way. But everyone knows the finest Killbots must be equipped with a machine gun. And Lotus Notes.
Lessons from the Republic, Volume XI, Chapter 4
That's a rather interesting quote, what's it from? I'm having trouble finding anything with a similar title.
Funny, I thought the '09 reboot was Starfleet Academy: 90210. Gotta get my glasses fixed...
Ah yes, "Melrose Space".
Wikipedia cites that plants have a metabolic conversion efficiency of six per cent [wikipedia.org].
As a biologist, this figure seemed a little high, so I took a look around.
Hallenbeck (2012) states on p. 250:
"...maximum photosynthetic efficiencies cannot be higher than 5.5% in theory, and in practice achieving efficiencies of 1 or 1.5% are exceptional".
However, this statement applies only to algae-based biofuels, and the discrepancy appears to be due to the current difficulty in dealing with real-life algae culture problems.
Zhu, Long, and Ort (2008) give some figures for land-plants:
"...the maximum conversion efficiencies of solar radiation into biomass are 4.6% (C3) and 6.0% (C4) at 30C... ...The highest solar energy conversion efciency reported for C3 crops is about 2.4% and about 3.7% for C4 crops across a full growing season based on solar radiation intercepted by the leaf canopy."
"These observed solar energy conversion efficiencies noted above for C3 and C4 crops, while well below the theoretical maximums that we computed in Figure 2, are nevertheless threefold to fourfold larger than the average conversion efficiency attained for major crops in the U.S."
This seems to happen a lot.
Yes. The Powers That Be have yet again killed Till Eulenspiegel for his Merry Pranks.
The same thing happened to me, and the anti harassment laws were useless to help. Here's why - the anti harassment laws only protect the person they are looking for. Since you are not the person they are looking for, they can call your number as often as they like - you can't request they stop, since you aren't the person with the debt.
Hmm... in that case, since it is a call of a commercial nature, and you do not have a pre-existing business relationship with them (since you are in no way related to the actual debtor), can you go after them through the anti-telemarketer laws?