I was embarrassed recently when the IT department claim a Linux computer in my office was taken over by the Rustock BOT. After checking the ssh log, I realized it was a coworker who uses it for code repository and SOCK5 Proxy as he works abroad from China. He has a compromised Windows machine. To the best of my knowledge, AV doesn't really catch these stuff which are more and more common now a day. Anyone has recommendations?
I don't understand why people find learning temperature is hard.I just remember that normal temperature is 37C/98F so that I know when I get have a fever. I also remember ice is 0C/32F. So if temperature is closer to the former, it is hot; if if temperature is closer to the latter it is hot.
The problem, as addressed by TFA, is often not just what you use, but what your client expect you to use because they use the same thing in house. If Inkscape is not compatible with illustrator-cs#, we get it. But the problem is Illustrator-CSx not able to work directly with Illustrator-CSy. Also mentioned in the TFA, the same version doesn't work across platform because of font rendering issue.
IANAArtist. But I use inkscape for scalable illustrations to be included in some journal articles. So all I need is something that produce PDF and inkscape never fail me. I used to use illustrator since my department has license. But the licenses are across multiple versions, so an I-10 here on this computer, a CS1/2 over there. I find the same illustration exported in common format like eps, pdf, svg etc by illustrator has many quirks that other software, or just different version of illustrator refuse to render correctly. I see absolutely no reason for that to be the case because features difference between versions are minimal. I concluded that this must be just dick-move on Adobe's part and stop using their software completely.
You know what other countries are also a republic?
People's Republic of China,
Democratic People's Republic of Korea,
Islamic Republic of Iran,
etc.
Their government are really form by representatives of the people, just not elected representative (well, not universal and fair election anyway...)
What sets us apart IS the strong democratic tradition.
No one needs to own an Apple device. No one is forced to own an Apple device. No one is entitled to own an Apple device.
Yep. It's all too expensive for me (grad. student) anyway who will basically be using it as a pdf reader for academic argicle. I am taking advantage of the (still on going) NookColor sale on ebay and root that thing when it comes to get a $200 Android tablet. It's no Xoom, but also doesn't cost 3-4 times as much.
IA_definitely_NAL, isn't this a civic issue that facebook is looking for compensation for revenue lost (putting aside the issue that these canceled users actually represent this much money). Can this douche be put in jailed because it doesn't sound like a criminal issue? I actually want to know.
Harvesting antimatter is incredibly hard. It's not like you can just stuff it in a shoe box. You need to make sure that it doesn't come into contact with any normal matter. This means putting it in a vacuum and using magnetic fields to make sure that it doesn't touch the sides of the container. Scientists only managed to make a stable antimatter container for the first time a few months back.
They were able to contain anti-hydrogen for the first time a few months back. This is hard because anti-hydrogen has no net charge.
On contrary, this group at my old school http://positrons.ucsd.edu/, has been trapping and storing (for long durations measured in days!) positron for many years.
I have an HTC phone that has a slightly misshaped micro-USB female port that has only one wedged corner instead of the regular two corners and it comes with the a cable with a male side of the corresponding shape. This do not stop me from connecting other regular cable or micro-USB charger to the phone, but it does prevent me from using HTC's cable on other device (not that I intend to do that).
I understand if you want to make an odd-shaped port to make people buy accessories exclusively from you. But this do not achieve that and is just kind of dumb.
As a physics grad student, I TA a LOT of life-science, pre-med students for introductory physics. In these courses, calculus is not necessary. Considering how horrific an average student performs when confronted a problem requiring more than 3 lines of algebra manipulations, I would not be surprised if there's a statistic somewhere more than half of MDs cannot do first-year college level math. I also tutored people taking the MCAT, again, calculus not necessary.
Replying to myself. On SiC, you can also deposit carbon vapor and they will--like snow falling--grow into few layers. The same problem is still present, how do you find them?
The "magic" in this case is not graphene, but rather good old Silicon Oxide. And that's why de Heer's work on SiC is not recognized and he is not credited for being first to isolate graphene. Let me explain
People make graphene all the time as long as they are working with carbon. Trouble is, it is impossible to distinguish a single layer from a double layer from a triple layer when they are so tiny. You can probably use an expensive AFM to map the topography, but that's a pricy and time consuming proporsition. On SiC, you chemically etch away a some Si atoms on the surface layers, leaving you with one, two, or probably three layers of graphene. But it is difficult to control chemistry. How do you know WHERE your 1, 2, 3 layers are even if you have made them?
That's where SiO2 comes in. In the case of prize winner, they were working with SiO2 substrate. Due to certain dielectric property turn out to have an interference effect with VISIBLE light that the reflected light from 0, 1, 2, 3 layers of graphene on top of it become distinguishable enough in color that the naked eye that a train graduate student can just look under an inexpensive microscopy and says here's a monolayer, here's a bilayer, and so on. (Beyond 4 layers it's hard to tell from bulk graphite). You cannot do that with SiC. Yes, the "scotch tape" method produced crappy graphene as far as electronic properties is concern (yet they still observer QHE at room temperature. That tells you how good a conductor graphene is), but that's why this method is not used any more pass 2006. But the discovery here is not graphene per se, but how to cheaply and easily identify it and as a result, the explosion of researches following their work.
So I suppose you can say these guys got lucky caz they were working with the right substrate. But that's science discovery for ya
I had no good thing to say 20 minutes ago. Then I happened restarting the browser, the story refresh and it's showing no comment. This is just not an interesting topic for nerd.
Really? You are not seeing this on a University Campus? I see plenty of OSX around. In fact, I just recently bought a ThinkPad and wanted to see if I can give it to the Academic Computing people for warranty repair just in case, and they are posting an "OSX only" sign. And this is a major research university with a reputable CS/EE department.
I believe that congress was sold on the interstate highways act because we needed a system to move and stage nuclear weapon during the early days of the Cold War. Can incident like this finally convince congress to pay some money for the infrastructure for the 21st century?
1. Create a super fast OS that take over the world's stock trading
2. Ruin the economy so that no one can afford to buy proprietary product any more
3....
4. Linux on every desktop!!!
Here is my anecdotal evident. I just watched all 10+hrs of Prof. Susskind's Statistical Mechanics lecture on Youtube straight last night on my Chromium+Flash all the while updating world from source (yeah, a Gentoo machine). And this computer is about 5 years old Athlon64 3200.
Adobe were bitching about canceling 64-bit flash not a few months ago. Then they turned about and released a, AFAICT, faster and more stable Linux version (the pre-discontinued versionw were pretty crappy). I have no problem keeping flash around, only selectively blocking flash ad's.
After reading this, I don't see how it is different from a semi-conducting carbon nanotube (CNT), which also has gap and finite effective mass. The author cited Dresselhaus' review on carbon material, but didn't bother to make the connection.
They took Dirac's equation (which is an continuous approximation for graphene as long as the physics you are interested in do not involve length scale comparable to lattice size), and imposed periodic boundary condition to it. This is the same thing one do to find the spectrum for CNT. In fact, for CNT you HAVE to care about how the lattice match up because depending on the way the two boundaries commensurate, CNT can be either metal (gapless, massless) or semi-conducting (with gap and mass). So this "creating mass" thing are already done in semi-conducting nanotube. For engineering, it's been utterly boring because the gap is so small. Otherwise we would have CNT electronic by now.
The paper reads like an exercise one gives to an physics student. It makes no novel prediction, propose no experiment. It has a thought experiment about making a flat-rolled-flat graphene region and study some transport through it. But it offers no clue about how to do that or estimate how hard it would be given say the bending rigidity of graphene. Side note: freestanding graphene is not stable and tends to completely roll in to CNT. One usually, as the Nobel prize winner did, need a substrate that it will stick to, SiO2 in their case. This is why CNT predates graphene by two decades.
Just because something is posted on arxiv with a provocative title doesn't make it a worthy paper.
I don't think anyone is disputing that curved mirror can focus light to the point of ignition. What was busted was the fact that hundreds of people holding a mirror can provide a focused enough beam to light a moving target. A series of fixed window on a particular spot is not exactly what this myth was calling for.
There were many mines in North America. They were shut down because to comply with US/Canadian environmental regulation and pay the wages here would put them in a huge competitive disadvantage versus the Chinese mines. You just can't compete with places where they put environment and worker protection at such low places in their priorities.
I just would like to point out the irony that their paper on the initial Quantum Hall Effect measurement, one that verified that they did have a single layer graphene since it has a distinct QHE signature, was rejected by Nature and they have to "settle" for Science...
Slashdot Mirror
It is obvious, Hitler is welcoming OBL while celebrating his 66th anniversary of entering Hell. http://en.wikipedia.org/wiki/Adolf_Hitler
I was embarrassed recently when the IT department claim a Linux computer in my office was taken over by the Rustock BOT. After checking the ssh log, I realized it was a coworker who uses it for code repository and SOCK5 Proxy as he works abroad from China. He has a compromised Windows machine. To the best of my knowledge, AV doesn't really catch these stuff which are more and more common now a day. Anyone has recommendations?
I don't understand why people find learning temperature is hard.I just remember that normal temperature is 37C/98F so that I know when I get have a fever. I also remember ice is 0C/32F. So if temperature is closer to the former, it is hot; if if temperature is closer to the latter it is hot.
IANAArtist. But I use inkscape for scalable illustrations to be included in some journal articles. So all I need is something that produce PDF and inkscape never fail me. I used to use illustrator since my department has license. But the licenses are across multiple versions, so an I-10 here on this computer, a CS1/2 over there. I find the same illustration exported in common format like eps, pdf, svg etc by illustrator has many quirks that other software, or just different version of illustrator refuse to render correctly. I see absolutely no reason for that to be the case because features difference between versions are minimal. I concluded that this must be just dick-move on Adobe's part and stop using their software completely.
You know what other countries are also a republic? People's Republic of China, Democratic People's Republic of Korea, Islamic Republic of Iran, etc.
Their government are really form by representatives of the people, just not elected representative (well, not universal and fair election anyway...) What sets us apart IS the strong democratic tradition.
I got the Nook Color for $200. And it's running Gingerbread now.
No one needs to own an Apple device. No one is forced to own an Apple device. No one is entitled to own an Apple device.
Yep. It's all too expensive for me (grad. student) anyway who will basically be using it as a pdf reader for academic argicle. I am taking advantage of the (still on going) NookColor sale on ebay and root that thing when it comes to get a $200 Android tablet. It's no Xoom, but also doesn't cost 3-4 times as much.
IA_definitely_NAL, isn't this a civic issue that facebook is looking for compensation for revenue lost (putting aside the issue that these canceled users actually represent this much money). Can this douche be put in jailed because it doesn't sound like a criminal issue? I actually want to know.
Because you were told you will get diarrhea by the parent, so your body produced one per your expectation.
Harvesting antimatter is incredibly hard. It's not like you can just stuff it in a shoe box. You need to make sure that it doesn't come into contact with any normal matter. This means putting it in a vacuum and using magnetic fields to make sure that it doesn't touch the sides of the container. Scientists only managed to make a stable antimatter container for the first time a few months back.
They were able to contain anti-hydrogen for the first time a few months back. This is hard because anti-hydrogen has no net charge. On contrary, this group at my old school http://positrons.ucsd.edu/, has been trapping and storing (for long durations measured in days!) positron for many years.
I have an HTC phone that has a slightly misshaped micro-USB female port that has only one wedged corner instead of the regular two corners and it comes with the a cable with a male side of the corresponding shape. This do not stop me from connecting other regular cable or micro-USB charger to the phone, but it does prevent me from using HTC's cable on other device (not that I intend to do that).
I understand if you want to make an odd-shaped port to make people buy accessories exclusively from you. But this do not achieve that and is just kind of dumb.
As a physics grad student, I TA a LOT of life-science, pre-med students for introductory physics. In these courses, calculus is not necessary. Considering how horrific an average student performs when confronted a problem requiring more than 3 lines of algebra manipulations, I would not be surprised if there's a statistic somewhere more than half of MDs cannot do first-year college level math. I also tutored people taking the MCAT, again, calculus not necessary.
It is a traditional symbol for the Buddist, albeit at different orientation. Here is a picture of the huge status in HK: http://www.teachenglishinasia.net/files/images/giant-buddha-hongkong.preview.JPG
Replying to myself. On SiC, you can also deposit carbon vapor and they will--like snow falling--grow into few layers. The same problem is still present, how do you find them?
The "magic" in this case is not graphene, but rather good old Silicon Oxide. And that's why de Heer's work on SiC is not recognized and he is not credited for being first to isolate graphene. Let me explain
People make graphene all the time as long as they are working with carbon. Trouble is, it is impossible to distinguish a single layer from a double layer from a triple layer when they are so tiny. You can probably use an expensive AFM to map the topography, but that's a pricy and time consuming proporsition. On SiC, you chemically etch away a some Si atoms on the surface layers, leaving you with one, two, or probably three layers of graphene. But it is difficult to control chemistry. How do you know WHERE your 1, 2, 3 layers are even if you have made them?
That's where SiO2 comes in. In the case of prize winner, they were working with SiO2 substrate. Due to certain dielectric property turn out to have an interference effect with VISIBLE light that the reflected light from 0, 1, 2, 3 layers of graphene on top of it become distinguishable enough in color that the naked eye that a train graduate student can just look under an inexpensive microscopy and says here's a monolayer, here's a bilayer, and so on. (Beyond 4 layers it's hard to tell from bulk graphite). You cannot do that with SiC. Yes, the "scotch tape" method produced crappy graphene as far as electronic properties is concern (yet they still observer QHE at room temperature. That tells you how good a conductor graphene is), but that's why this method is not used any more pass 2006. But the discovery here is not graphene per se, but how to cheaply and easily identify it and as a result, the explosion of researches following their work.
So I suppose you can say these guys got lucky caz they were working with the right substrate. But that's science discovery for ya
REF: http://lanl.arxiv.org/abs/0705.0091
I had no good thing to say 20 minutes ago. Then I happened restarting the browser, the story refresh and it's showing no comment. This is just not an interesting topic for nerd.
Really? You are not seeing this on a University Campus? I see plenty of OSX around. In fact, I just recently bought a ThinkPad and wanted to see if I can give it to the Academic Computing people for warranty repair just in case, and they are posting an "OSX only" sign. And this is a major research university with a reputable CS/EE department.
I believe that congress was sold on the interstate highways act because we needed a system to move and stage nuclear weapon during the early days of the Cold War. Can incident like this finally convince congress to pay some money for the infrastructure for the 21st century?
Who am I kidding?
1. Create a super fast OS that take over the world's stock trading ...
2. Ruin the economy so that no one can afford to buy proprietary product any more
3.
4. Linux on every desktop!!!
Here is my anecdotal evident. I just watched all 10+hrs of Prof. Susskind's Statistical Mechanics lecture on Youtube straight last night on my Chromium+Flash all the while updating world from source (yeah, a Gentoo machine). And this computer is about 5 years old Athlon64 3200.
Adobe were bitching about canceling 64-bit flash not a few months ago. Then they turned about and released a, AFAICT, faster and more stable Linux version (the pre-discontinued versionw were pretty crappy). I have no problem keeping flash around, only selectively blocking flash ad's.
After reading this, I don't see how it is different from a semi-conducting carbon nanotube (CNT), which also has gap and finite effective mass. The author cited Dresselhaus' review on carbon material, but didn't bother to make the connection.
They took Dirac's equation (which is an continuous approximation for graphene as long as the physics you are interested in do not involve length scale comparable to lattice size), and imposed periodic boundary condition to it. This is the same thing one do to find the spectrum for CNT. In fact, for CNT you HAVE to care about how the lattice match up because depending on the way the two boundaries commensurate, CNT can be either metal (gapless, massless) or semi-conducting (with gap and mass). So this "creating mass" thing are already done in semi-conducting nanotube. For engineering, it's been utterly boring because the gap is so small. Otherwise we would have CNT electronic by now.
The paper reads like an exercise one gives to an physics student. It makes no novel prediction, propose no experiment. It has a thought experiment about making a flat-rolled-flat graphene region and study some transport through it. But it offers no clue about how to do that or estimate how hard it would be given say the bending rigidity of graphene. Side note: freestanding graphene is not stable and tends to completely roll in to CNT. One usually, as the Nobel prize winner did, need a substrate that it will stick to, SiO2 in their case. This is why CNT predates graphene by two decades.
Just because something is posted on arxiv with a provocative title doesn't make it a worthy paper.
I don't think anyone is disputing that curved mirror can focus light to the point of ignition. What was busted was the fact that hundreds of people holding a mirror can provide a focused enough beam to light a moving target. A series of fixed window on a particular spot is not exactly what this myth was calling for.
There were many mines in North America. They were shut down because to comply with US/Canadian environmental regulation and pay the wages here would put them in a huge competitive disadvantage versus the Chinese mines. You just can't compete with places where they put environment and worker protection at such low places in their priorities.
The kindle of course has a keyboard, making this possible.
I am still deciding on getting either one for thanksgiving. This put another in the Kindle's column. Then again, I do like Nook's support for epub.
I just would like to point out the irony that their paper on the initial Quantum Hall Effect measurement, one that verified that they did have a single layer graphene since it has a distinct QHE signature, was rejected by Nature and they have to "settle" for Science...
Now Nature is doing the interview...