Anyone else wondering how they got black on the white sheet of paper with a red laser
The image is NOT real. Looks pretty phony to me (investigate the projector unit itself). The caption also suggests to me that this is just an artist's representation of what could happen, translated, "A vision for the mini projector".
Yup, and I hate to give freebie ideas to those hunting through slashdot comments for gold, but some kind of image monitor for feedback would be a huge improvement. This would form a closed loop control system, allowing all kinds of uncalibrated automatic adjustments to the output image. In other words, individual pixel points could be fixed in relation to "us" regardless of where they are physically projecting onto. i.e., flat projected image no matter what irregular projection surface is being used. This would also be useful for related projection technologies such as the portable projection based keyboard (projects key layout onto some surface, monitors key presses).
Wow, tiny projection based user input/output devices would be a huge leap forward for portable computing. You'd get rid of that awful display screen and keyboard, which are both heavy, prone to breaking, and inadjustible to the environment. Hell, while you're at it, why not use a WLAN connection to move your mass storage devices to a non-mobile point. Put your processor there too, and now your computation device is light as all f*ck. Pretty much no moving parts, not hot processor... just a shitload of RAM, some lasers, and a wireless connection to home base.
Please, someone build something like that. I'd love to use one.
If this doesn't sound familiar, then you've forgotten a little bit of Internet history. Our current Internet started as ARPAnet, an effort between the government, universities. What happened since then?? I think it's safe to say that business people/marketers made sure a damn useful resource went down the toilet. Weak software and too many bums on this Internet have made the government smarten up that they need their own network for reliability sake.
... conservation of energy is real... theory of relativity is real... suggests that on any largish scale, there can be no teleportation... quantum theory seems to be unlikely to be important for the teleportation of large scale... IN other words, there is already a huge set of scientific evidence against the idea
I think the proposed teleportation stuff is crap too, but seriously, you are sounding overconfident. Everything you say is based on theories, and some of slashdot's readership is older than the freshest theories. QM theory has been tinkered with over time as new holes were found. All I'm saying is, nothing is certain. Theories are revised, and intuition is not what governs reality.
(And I say this as an Electrical Engineer). Established, respected experts in a field are among the most reluctant to consider radically new ideas. Major shifts in science have occurred when some young oddball found a new way to look at an old problem, or an outsider to the field found a new link that was never considered before. Consider the significant (albeit slow) revolution in medicine that is increasingly acknowledging the mind/body connection. Placebo treatments that actually have physiological healing effects; patients that exert conscious control over the failing processes in their bodies.
Now I'm not saying that necessarily this teleportation stuff has any merit. I just want to point out that if you're quick to say "what crap" then you might have fallen into the trap that leads minds to stagnate; that is, to believe that existing human knowledge is complete.
If there's one thing we can bet on, it's that human knowledge is far from complete and we are far from understanding the true nature of things. We are naive creatures with limited understandings of things. Perhaps the military is more willing to gamble funding in new directions, because unlike academics their main goal isn't to protect their researching asses for the rest of their lives. Their goal is to develop new tools that the enemy doesn't have.
Now Open Cores would be great! But as long as we don't have a home chip manufacturing unit
Oh come on, you're acting like you don't know about FPGAs (quite cheap from many vendors, my favourite is xilinx). These chips can be totally reprogrammed and many of them now come with soft cores. Awfully configurable. These things are in the process of a revolution in firmware/embedded systems for flexibility and updating. Forget about uploading new data to flash memory; you can easily, cheaply, and reliably update the whole damn processor.
While the damage caused by a nuclear catastrophy is much larger than that of a coal
It's not just about big explosions and Chernobyl. There is all that nuclear waste to deal with - sure, you try to bury it in obscure places and ship it up to northern Canada but can you do that forever? Nuclear reactors are great when they're new but as they deteriorate they are one major pain in the ass. They start leaking into the external environment (ground, water), requiring costly repairs to prevent disaster. And let's face it, the money for those repairs won't be around:)
The availability of energy really isn't a problem over the long term. The problem is with all the wastes produced - byproducts of burning petroleum based products, nuclear waste from nuclear reactors, and wastes from industry as they use even more energy to process even more resources.
I get disappointed when I keep reading about science's best minds working on new ways to tap huge amounts of energy. Why the hell not concentrate on new ways to more efficiently use available energy resources, that is, do more with less. The U.S. (and Canada) are not energy efficient countries. If you visit Europe you'll see how they are getting used to making do with less. If the U.S. can not learn to do this, in 50 to 100 years they will be wallowing in one big cesspool, because the reality is that waste doesn't just disappear.
Glad I live in Canada and not some oppressed nation
You're being overconfident. Both the Liberals and the NDP support ratification of WIPO which formed the DMCA in the US. If you think your politicians in Canada are protecting your right to fair use of media, you're wrong. Why not head on over to the digital-copyright forums and get involved; fight for your right to fair use of digital media.
Because your Windows account has non admin privileges, of course. A low privilege user can't overwrite the hosts files, or screw around with the HKLM registry. And personally, my own mail client doesn't even try to support HTML or script-like thingies. Too difficult, too weird, unnecessary, dangerous.
You're going too deep; the Packers won by a 2:1 margin, so Kerry will win by a 2:1 landslide.
You're both idiots!:) I wish people would stop with the weird statistical correlations[1]. If you want to do something meaningful, go vote and tell all your friends to vote.
In the last four presidential elections, the cookie recipe of the candidate's wife (versus the opponent's) has been a perfect predictor of the election outcome.
Slackware is definitely good with old hardware. In our student computer lab, we have a number of 100 MHz-ish ancient desktops running Slackware 10 with X.org.
Also, Slackware is a good base for tweaking your own distro, because it is so pleasant to configure:)
Far more important. The dollar is weakening, Americans are getting cheaper.
The U.S. dollar is weakening globally, not just against the Canadian dollar. You want to see a scary graph? Try USD versus the Euro. Looks even worse against Canadian dollar. Oh man. Now what's happening here is the world no longer seems to want to buy USD. They all want to sell USD, and the price is dropping fast. Perhaps investors are concerned about America's debt or the ability of the US govt to keep a stable economy. Any way, this US dollar falling through the floor thing isn't making the news at all and I don't understand why, because this is going to really be a pain in the ass for America. The U.S. imports practically everything, and if their dollar is losing like 15% of its value, it's going to be that much more expensive to import things into the U.S. Ouch.
I think it's because there was a fad for awhile for directors of TV and movies to film in Canada
Was a fad? Buddy, I've got news for you... there have been no fewer than three American movies filmed in my own neighbourhood (Canadian city), couple blocks away from my house. This place is cheap for the industry, they love filming movies in Canada.
This is misleading. SPF might help verify that this email didn't come from redhat.com, but SPF isn't going to help you in general:
The envelope sender could have not been @redhat.com but the From field could have contained redhat.com; then, there is no SPF to check and you can't benefit from redhat's SPF record
The sender could have used a fedora-redhat.com address and published an SPF record for their own domain. Spammers already do this. The SPF check tells you nothing about authenticity. The SPF check would succeed, and it could still be a forgery.
I think you are underestimating Google's product line
I agree, these guys are special. Their text ads (which I learned about here on a slashdot ad) are unobtrusive and extremely effective. I thought online advertising was dead; I was wrong. You see, advertising was dead to marketers that had no technical know-how, and no tact. Google knows exactly what people seek, and they will be a marketing information giant. Just wait...
Given the way the stock price has increased, I think many of us were correct when we identified the blatant poo-pooing of google's IPO as a deliberate strategy by the organized "analysts". It seemed out of place at the time.
Rule #1: Analysts are full of shit. They always have been, they always will be. You should have gotten suspicious when you kept hearing 'headlines' about experts warnings against GOOG. Do not ever act based on analyst opinions you see on finance.yahoo; recommendations on CNN, CNBC. Take these opinions with a scoop of salt.
Rule #2: The periodic earnings report mean next to nothing. You think I'm joking? Ask any real accountant. Periodic financial statements are not audited, nor do they reflect an entire operating cycle. Expenses might be deferred to later on. The real story is to be seen when a year or two has passed. After such a period, you will have seen two audited reports and the period is sufficiently long that revenues and expenses can't be shuffled to look favourable. In other words, if something bad is happening it can't be hidden forever.
Those are my recommendations, as an accounting student and someone who has done decently with market investments.
Is replacing TCP necessary?
on
Replacing TCP?
·
· Score: 4, Insightful
There's no doubt that an alternative to TCP might have technical merits. But as far as communication protocols go, TCP itself is pretty amazing. Modern TCP implementations have been tweaked over decades and have impressive performance and reliability. And modern TCP/IP stacks have rather unspoofable connection establishment, another excellent feature for security.
If you want to replace TCP, you have to do more than just develop a new protocol that is faster. It would have to outperform TCP in speed, reliability, and substantially so in order to outweigh the costs of ditching a well-established and trusted protocol.
They are measuring environmental conditions inside the office where workers are working (fine) but there is an implied causation that e.g. higher temperatures cause better productivity, because workers are exhibiting fewer keystroke errors correlating with the higher temperatures.
What if you look outside the box (building)?
Strains on the HVAC system causing fluctuations in internal environmental conditions, are caused by variations in the external weather (outdoors environment). Perhaps on nice warm days, workers feel happier on their way to work and are more upbeat. During shitty weather they want work to fsck off.
So this does not mean that you can just crank up the heating inside a building and get better worker productivity. That would be a naive interpretation.
Well I disagree with you. University networks are not insecure because profs want to experiment with peer to peer software (is that what you're implying??). The hackers I have known locally gained root on our university's UNIX server via standard things, BIND, sendmail, rpc, imapd, wuftpd, etc. Compromises occured because our university is under staffed for UNIX admins and security people, and there are more people actively probing and trying attack paths on the system than an average system.
Universities are notorious for having poor network security! They typically don't have sufficient staff to maintain such tight control over network access. Why would such sensitive information be kept on inherently vulnerable networks in the first place?
Overall I like TightVNC the best. I have used it in a variety of situations, the most challenging of which was having my aunt install the VNC server on her 33.6k modem-connected PC, so I could fix her spyware problems from abroad. That experience showed me that the Windows version was easy enough to use (that my aunt could use it), and was very efficient with bandwidth because it went over a modem connection quite well!
I have also run the TightVNC server on Linux desktops, connecting via both Windows and other Linux stations. Worked great! VNC is fantastic stuff.
The only downside (of VNC in general) seems to be lack of encryption of the channel. An easy solution to this is SSH tunneling - e.g. run PuTTY on the Windows side (it does tunneling) and connect through to your LAN station through your border's SSH server. Very secure, very convenient.
Slashdot Mirror
Yup, and I hate to give freebie ideas to those hunting through slashdot comments for gold, but some kind of image monitor for feedback would be a huge improvement. This would form a closed loop control system, allowing all kinds of uncalibrated automatic adjustments to the output image. In other words, individual pixel points could be fixed in relation to "us" regardless of where they are physically projecting onto. i.e., flat projected image no matter what irregular projection surface is being used. This would also be useful for related projection technologies such as the portable projection based keyboard (projects key layout onto some surface, monitors key presses).
Wow, tiny projection based user input/output devices would be a huge leap forward for portable computing. You'd get rid of that awful display screen and keyboard, which are both heavy, prone to breaking, and inadjustible to the environment. Hell, while you're at it, why not use a WLAN connection to move your mass storage devices to a non-mobile point. Put your processor there too, and now your computation device is light as all f*ck. Pretty much no moving parts, not hot processor... just a shitload of RAM, some lasers, and a wireless connection to home base.
Please, someone build something like that. I'd love to use one.
If this doesn't sound familiar, then you've forgotten a little bit of Internet history. Our current Internet started as ARPAnet, an effort between the government, universities. What happened since then?? I think it's safe to say that business people/marketers made sure a damn useful resource went down the toilet. Weak software and too many bums on this Internet have made the government smarten up that they need their own network for reliability sake.
(And I say this as an Electrical Engineer). Established, respected experts in a field are among the most reluctant to consider radically new ideas. Major shifts in science have occurred when some young oddball found a new way to look at an old problem, or an outsider to the field found a new link that was never considered before. Consider the significant (albeit slow) revolution in medicine that is increasingly acknowledging the mind/body connection. Placebo treatments that actually have physiological healing effects; patients that exert conscious control over the failing processes in their bodies.
Now I'm not saying that necessarily this teleportation stuff has any merit. I just want to point out that if you're quick to say "what crap" then you might have fallen into the trap that leads minds to stagnate; that is, to believe that existing human knowledge is complete.
If there's one thing we can bet on, it's that human knowledge is far from complete and we are far from understanding the true nature of things. We are naive creatures with limited understandings of things. Perhaps the military is more willing to gamble funding in new directions, because unlike academics their main goal isn't to protect their researching asses for the rest of their lives. Their goal is to develop new tools that the enemy doesn't have.
It means the U.S. government would be better off nuking Columbia or dropping the agent orange.
The availability of energy really isn't a problem over the long term. The problem is with all the wastes produced - byproducts of burning petroleum based products, nuclear waste from nuclear reactors, and wastes from industry as they use even more energy to process even more resources.
I get disappointed when I keep reading about science's best minds working on new ways to tap huge amounts of energy. Why the hell not concentrate on new ways to more efficiently use available energy resources, that is, do more with less. The U.S. (and Canada) are not energy efficient countries. If you visit Europe you'll see how they are getting used to making do with less. If the U.S. can not learn to do this, in 50 to 100 years they will be wallowing in one big cesspool, because the reality is that waste doesn't just disappear.
Because your Windows account has non admin privileges, of course. A low privilege user can't overwrite the hosts files, or screw around with the HKLM registry. And personally, my own mail client doesn't even try to support HTML or script-like thingies. Too difficult, too weird, unnecessary, dangerous.
In the last four presidential elections, the cookie recipe of the candidate's wife (versus the opponent's) has been a perfect predictor of the election outcome.
Slackware is definitely good with old hardware. In our student computer lab, we have a number of 100 MHz-ish ancient desktops running Slackware 10 with X.org.
:)
Also, Slackware is a good base for tweaking your own distro, because it is so pleasant to configure
-
Rule #1: Analysts are full of shit. They always have been, they always will be. You should have gotten suspicious when you kept hearing 'headlines' about experts warnings against GOOG. Do not ever act based on analyst opinions you see on finance.yahoo; recommendations on CNN, CNBC. Take these opinions with a scoop of salt.
-
Rule #2: The periodic earnings report mean next to nothing. You think I'm joking? Ask any real accountant. Periodic financial statements are not audited, nor do they reflect an entire operating cycle. Expenses might be deferred to later on. The real story is to be seen when a year or two has passed. After such a period, you will have seen two audited reports and the period is sufficiently long that revenues and expenses can't be shuffled to look favourable. In other words, if something bad is happening it can't be hidden forever.
Those are my recommendations, as an accounting student and someone who has done decently with market investments.There's no doubt that an alternative to TCP might have technical merits. But as far as communication protocols go, TCP itself is pretty amazing. Modern TCP implementations have been tweaked over decades and have impressive performance and reliability. And modern TCP/IP stacks have rather unspoofable connection establishment, another excellent feature for security.
If you want to replace TCP, you have to do more than just develop a new protocol that is faster. It would have to outperform TCP in speed, reliability, and substantially so in order to outweigh the costs of ditching a well-established and trusted protocol.
They are measuring environmental conditions inside the office where workers are working (fine) but there is an implied causation that e.g. higher temperatures cause better productivity, because workers are exhibiting fewer keystroke errors correlating with the higher temperatures.
What if you look outside the box (building)?
Strains on the HVAC system causing fluctuations in internal environmental conditions, are caused by variations in the external weather (outdoors environment). Perhaps on nice warm days, workers feel happier on their way to work and are more upbeat. During shitty weather they want work to fsck off.
So this does not mean that you can just crank up the heating inside a building and get better worker productivity. That would be a naive interpretation.
Well I disagree with you. University networks are not insecure because profs want to experiment with peer to peer software (is that what you're implying??). The hackers I have known locally gained root on our university's UNIX server via standard things, BIND, sendmail, rpc, imapd, wuftpd, etc. Compromises occured because our university is under staffed for UNIX admins and security people, and there are more people actively probing and trying attack paths on the system than an average system.
Universities are notorious for having poor network security! They typically don't have sufficient staff to maintain such tight control over network access. Why would such sensitive information be kept on inherently vulnerable networks in the first place?
Overall I like TightVNC the best. I have used it in a variety of situations, the most challenging of which was having my aunt install the VNC server on her 33.6k modem-connected PC, so I could fix her spyware problems from abroad. That experience showed me that the Windows version was easy enough to use (that my aunt could use it), and was very efficient with bandwidth because it went over a modem connection quite well!
I have also run the TightVNC server on Linux desktops, connecting via both Windows and other Linux stations. Worked great! VNC is fantastic stuff.
The only downside (of VNC in general) seems to be lack of encryption of the channel. An easy solution to this is SSH tunneling - e.g. run PuTTY on the Windows side (it does tunneling) and connect through to your LAN station through your border's SSH server. Very secure, very convenient.
Not charging per core, whew, thus reducing our enterprise's total cost of operation!