I thought that there was a convention for determining the yield point for materials without clearly defined yield points, such as aluminum and it's 0.2% offset calculation.
While I'm inclined to believe that Sun is really try to open up the source to Solaris, the fact that they've only been able to put up a website (which notably has more links to press releases and news articles than source code) and the source for DTrace in the months since they've stated their Great Plan to open-source Solaris, it's no wonder that members of the community are calling an open-source Solaris vaporware.
Like other ductile materials, it will be elastic at low stresses, and will become increasingly plastic as stress increases.
True, but the most important factor in this case would be the lower yield strength (LYS), the point at which the transition from elastic to plastic behavior occurs. The article says very little about whether this concrete has a great LYS (deform elastically under everyday stress), or a small LYS (plastically deform even under little stress).
Is bendable concrete going to make it difficult to demolish structures built using it as the main material?
I don't think buildings made out of this stuff will survive a large enough explosion. Besides, concrete is really easy to break apart and chip (hence why you need to use rebar frames for serious construction), so just whacking away with chisel-tipped jackhammer should work for small jobs.
The architects, contractors, and construction workers of the Petronas towers in Kuala Lumpur simultaneously shout, "D'oh!"
From what I remember of watching a documentary on the construction of the Petronas towers, the primary concern of the engineers was the compressibility of the concrete -- each floor has to withstand the weight of the numerous floors above it. Flexibility was the least of their worries.
Furthermore, the two towers are located on a relatively 'soft' foundation -- they essentially 'float' on sea of soft land. The towers aren't anchored to the bedrock. Additionally, the bridge that connects the two towers is designed to allow the towers to move towards and away from each other. Thus, the towers stabilize each other and are quite flexible. According to the documentary, if you watch the water in the upper-level toilets on a windy day, you'll see it swooshing around.
We dont have that here and I never understood why you would rather use conrete than asphalt on roads. Well, I guess it could be that its cheaper but is it really better and safer?
One area where you can't use asphalt is on raised runways, like the elevated sections of freeways. Concrete might be more brittle, but its greatest quality lies in its resistance to compression. Unlike concrete, asphalt can't support tons of weight, so people don't make load-bearing structures out of asphalt.
This material might make the elevated sections of freeways safer. I don't see much use for it on regular roads, though.
The article fails to state whether the ductility of the concrete results in elastic (returns to its original shape when load is relieved) or plastic (stays in the shape you bent it) deformation.
One would hope for the former, since structures made out of this material may look strangely 'bent' over time if it readily undergoes plastic deformation.
And one last note: is this material going to be more cost-effective than steel?
Are you sure Ubuntu's installer is based on the new Debian installer?
I'm sure Ubuntu's developers changed it a bit, but it also looks like they borrowed a lot from the new installer. Look at the screenshots found here (for Ubuntu) and here (for Debian-Installer pre-rc2).
I can't find screenshots for rc3, but quickly glancing at the ones I linked for rc2, not too much has changed.
For regular Debian stable users, this doesn't mean too much: a simple apt-get upgrade is all it will take to 'upgrade' to Sarge.
For new Debian users, Debian testing images based upon the new installer have long been available here.
My main question is why Debian didn't advertise the above-linked installation images more. Just finding a link to the new installer ISO images is like navigating a maze blind-folded. Yes, I understand that they're not 'release-quality' yet, but it would take just a simple warning on the page to download Debian: "Please try our new installer! Although it's not completely stable, it's faster and easier to use and is definitely worth a try."
Ubuntu's installer is based upon the new installer, and it's not unreasonable to believe that many people use Ubuntu because it's an easier-to-install Debian, in no small part due to the work on Debian's new installer (and the great work of Ubuntu developers).
I'm really happy to see HP giving so much support. I'll definitely remember this the next time someone asks my opinion about what server hardware to buy.
I believe that was the reaction HP's marketing department also expected. Admittedly, providing the hardware was a very nice gesture, but in reality, it's a brilliant marketing move.
Furthermore, I hope you will take other factors and datapoints into consideration when someone asks you for your advice, though. The servers donated were relatively high-end -- they might or might not be reflective of all HP hardware.
According to Rhapsody.com's front page, you get "25 full-length songs per month - FREE". Upon further investigation you only get to 25 free song plays. You don't get to keep the songs you play, and playing a song twice counts as two songs.
In other words, it's misleading advertising (oh what's new?) and if Rhapsody thinks this is going to help them compete again iTunes, they're very wrong -- iTunes gives away at least two songs a week that you get to *keep* and play as many times as you want.
Although I agree with your general point, you seem to have gotten things mixed up:
Then there's geopolitics. i.e. invading Iraq and then declaring Frace won't be getting any of the oil because they're uncooperative, then getting mad when we discover they weren't obeying our Oil For Food program.
The Oil For Food program violation occured prior to the United States invading Iraq.
rsync is a great backup method, but there are some problems when trying to use it on a Windows server. cwRsync (rsync for Windows) isn't able to backup locked files.
This presents a problem because many users are accustomed to leaving programs and files open during the night, when the backups are performed. Apparently some third-party vendors have come up with ways to backup locked files, but I don't know of any open-source tools that do.
I'm sure making all demons optional will certainly be a welcome change...
But, seriously, your suggestions seem crazy to me:
Make it possible to deactivate gconf, for example, and have applications read and write configuration files the classical Unix way, by one central switch.
Deactivate gconf with one central switch? Not only would that require rewriting a ton of applications, it would also be incredibly impractical. How would we deal with common variables? Oh yes, let's just make another randomly-named file stored in some random hidden directory and have all daemons read from it. No thanks, I'll stick with gconf.
Make the sound demon optional, so that audio output could just be written (in old-fashioned, non-overlapping way) to/dev/dsp.
You do realize that using the sound daemon is already optional in Gnome, right? Check Applications->Desktop Preferences->Sound. And sure, let's only allow _one_ application to use the sound device at a time. That really sounds like progress...
The demons might have some use for some people, for for many, they are just bloat and unnecessary complexity.
I don't know about bloat, but I find it ironic that the two types of demons you mentioned are usually transparent to a user's experience.
Since people apparently called bullshit on my initial post, here is some evidence to support my claim that hydrogen DOES heat up as it expands:
Agilent - Hydrogen Safety Guide: "Hydrogen temperature increases as the gas expands. Hydrogen that is allowed to expand rapidly from high pressure can self ignite."
Ask a NETL Researcher Archive: "The safety concern here is if the impurity is oxygen. Hydrogen gas heats up on expansion and can self-ignite in a very powerful and nasty explosion."
Perhaps people need to do a little more research before moderating or replying...
leaking H2 is somewhat safer than leaking gasoline, because it tends to float up and away instead of accumulate in a growing pool on the ground
Unfortunately, this is not always true. Hydrogen is one of the few gases that heats up upon expansion. Under high pressures, leaking hydrogen can rapidly heat up and ignite.
It should also be mentioned that one of the more popular eDonkey clients for *nix, mldonkey, also functions as a Bittorrent client. The latest CVS of mldonkey also supports multi-network downloading.
I'm pretty sure I once saw Win32 binaries of mldonkey out there, but I'm not sure if they are recent or have been updated at all.
Hell, they *froze him* at the end of Season 7, so why didn't they just keep him frozen and let Don Davis continue being the great performer he is?
Actually, Don Davis wanted to reduce his role in Stargate SG-1 so that he could persue his interest in painting. You can verify this by reading transcripts of his statements at the Stargate SG-1 conventions.
In the end, I think the decision to "promote" RDA was both his and Davis's desire to reduce their involvement in the show.
And then there is the spork, who inherits the benefits of both worlds. OS X perhaps?
Re:Try the premium Pur brand
on
Hacking Vodka
·
· Score: 2, Informative
Some chemistry major friends of mine decided to test a bunch of water filters by passing water with a known contaminant through the filters and testing the filtered water with an atomic absorption spectrometer.
Basically, they found that there was no difference between regular and premium Pur filters. However, they found out that the Brita filters were the best overall. I'd link to the results, but they only exist in dead-tree form.
Oh, a cool thing to do is to crack open one of the filters and look inside. One thing my friends noticed about the cheaper (and usually less effective) filters is that they were mostly full of ion-exchange filler rather than activated carbon.
Re:Does this work for Rubbing Alcohol?
on
Hacking Vodka
·
· Score: 1
Rubbing alcohol is isopropyl alcohol. Unless your filter happens to be a reactor or contain some free radicals, you'll never get ethanol (drinking alcohol) out of it.
Slashdot Mirror
Wow! Quantum programmers! So, may if we put them in a box hooked up to a poisonous gas tank...
I thought that there was a convention for determining the yield point for materials without clearly defined yield points, such as aluminum and it's 0.2% offset calculation.
While I'm inclined to believe that Sun is really try to open up the source to Solaris, the fact that they've only been able to put up a website (which notably has more links to press releases and news articles than source code) and the source for DTrace in the months since they've stated their Great Plan to open-source Solaris, it's no wonder that members of the community are calling an open-source Solaris vaporware.
Like other ductile materials, it will be elastic at low stresses, and will become increasingly plastic as stress increases.
True, but the most important factor in this case would be the lower yield strength (LYS), the point at which the transition from elastic to plastic behavior occurs. The article says very little about whether this concrete has a great LYS (deform elastically under everyday stress), or a small LYS (plastically deform even under little stress).
Is bendable concrete going to make it difficult to demolish structures built using it as the main material?
I don't think buildings made out of this stuff will survive a large enough explosion. Besides, concrete is really easy to break apart and chip (hence why you need to use rebar frames for serious construction), so just whacking away with chisel-tipped jackhammer should work for small jobs.
The architects, contractors, and construction workers of the Petronas towers in Kuala Lumpur simultaneously shout, "D'oh!"
From what I remember of watching a documentary on the construction of the Petronas towers, the primary concern of the engineers was the compressibility of the concrete -- each floor has to withstand the weight of the numerous floors above it. Flexibility was the least of their worries.
Furthermore, the two towers are located on a relatively 'soft' foundation -- they essentially 'float' on sea of soft land. The towers aren't anchored to the bedrock. Additionally, the bridge that connects the two towers is designed to allow the towers to move towards and away from each other. Thus, the towers stabilize each other and are quite flexible. According to the documentary, if you watch the water in the upper-level toilets on a windy day, you'll see it swooshing around.
We dont have that here and I never understood why you would rather use conrete than asphalt on roads. Well, I guess it could be that its cheaper but is it really better and safer?
One area where you can't use asphalt is on raised runways, like the elevated sections of freeways. Concrete might be more brittle, but its greatest quality lies in its resistance to compression. Unlike concrete, asphalt can't support tons of weight, so people don't make load-bearing structures out of asphalt.
This material might make the elevated sections of freeways safer. I don't see much use for it on regular roads, though.
The article fails to state whether the ductility of the concrete results in elastic (returns to its original shape when load is relieved) or plastic (stays in the shape you bent it) deformation.
One would hope for the former, since structures made out of this material may look strangely 'bent' over time if it readily undergoes plastic deformation.
And one last note: is this material going to be more cost-effective than steel?
Are you sure Ubuntu's installer is based on the new Debian installer?
I'm sure Ubuntu's developers changed it a bit, but it also looks like they borrowed a lot from the new installer. Look at the screenshots found here (for Ubuntu) and here (for Debian-Installer pre-rc2).
I can't find screenshots for rc3, but quickly glancing at the ones I linked for rc2, not too much has changed.
For regular Debian stable users, this doesn't mean too much: a simple apt-get upgrade is all it will take to 'upgrade' to Sarge.
For new Debian users, Debian testing images based upon the new installer have long been available here.
My main question is why Debian didn't advertise the above-linked installation images more. Just finding a link to the new installer ISO images is like navigating a maze blind-folded. Yes, I understand that they're not 'release-quality' yet, but it would take just a simple warning on the page to download Debian: "Please try our new installer! Although it's not completely stable, it's faster and easier to use and is definitely worth a try."
Ubuntu's installer is based upon the new installer, and it's not unreasonable to believe that many people use Ubuntu because it's an easier-to-install Debian, in no small part due to the work on Debian's new installer (and the great work of Ubuntu developers).
I'm really happy to see HP giving so much support. I'll definitely remember this the next time someone asks my opinion about what server hardware to buy.
I believe that was the reaction HP's marketing department also expected. Admittedly, providing the hardware was a very nice gesture, but in reality, it's a brilliant marketing move.
Furthermore, I hope you will take other factors and datapoints into consideration when someone asks you for your advice, though. The servers donated were relatively high-end -- they might or might not be reflective of all HP hardware.
According to Rhapsody.com's front page, you get "25 full-length songs per month - FREE". Upon further investigation you only get to 25 free song plays. You don't get to keep the songs you play, and playing a song twice counts as two songs.
In other words, it's misleading advertising (oh what's new?) and if Rhapsody thinks this is going to help them compete again iTunes, they're very wrong -- iTunes gives away at least two songs a week that you get to *keep* and play as many times as you want.
Although I agree with your general point, you seem to have gotten things mixed up:
Then there's geopolitics. i.e. invading Iraq and then declaring Frace won't be getting any of the oil because they're uncooperative, then getting mad when we discover they weren't obeying our Oil For Food program.
The Oil For Food program violation occured prior to the United States invading Iraq.
rsync is a great backup method, but there are some problems when trying to use it on a Windows server. cwRsync (rsync for Windows) isn't able to backup locked files.
This presents a problem because many users are accustomed to leaving programs and files open during the night, when the backups are performed. Apparently some third-party vendors have come up with ways to backup locked files, but I don't know of any open-source tools that do.
Make all demons optional
/dev/dsp.
I'm sure making all demons optional will certainly be a welcome change...
But, seriously, your suggestions seem crazy to me:
Make it possible to deactivate gconf, for example, and have applications read and write configuration files the classical Unix way, by one central switch.
Deactivate gconf with one central switch? Not only would that require rewriting a ton of applications, it would also be incredibly impractical. How would we deal with common variables? Oh yes, let's just make another randomly-named file stored in some random hidden directory and have all daemons read from it. No thanks, I'll stick with gconf.
Make the sound demon optional, so that audio output could just be written (in old-fashioned, non-overlapping way) to
You do realize that using the sound daemon is already optional in Gnome, right? Check Applications->Desktop Preferences->Sound. And sure, let's only allow _one_ application to use the sound device at a time. That really sounds like progress...
The demons might have some use for some people, for for many, they are just bloat and unnecessary complexity.
I don't know about bloat, but I find it ironic that the two types of demons you mentioned are usually transparent to a user's experience.
Since people apparently called bullshit on my initial post, here is some evidence to support my claim that hydrogen DOES heat up as it expands:
Agilent - Hydrogen Safety Guide: "Hydrogen temperature increases as the gas expands. Hydrogen that is allowed to expand rapidly from high pressure can self ignite."
Ask a NETL Researcher Archive: "The safety concern here is if the impurity is oxygen. Hydrogen gas heats up on expansion and can self-ignite in a very powerful and nasty explosion."
Perhaps people need to do a little more research before moderating or replying...
leaking H2 is somewhat safer than leaking gasoline, because it tends to float up and away instead of accumulate in a growing pool on the ground
Unfortunately, this is not always true. Hydrogen is one of the few gases that heats up upon expansion. Under high pressures, leaking hydrogen can rapidly heat up and ignite.
Does anyone go: "OK, I need the OS for my mySQL project. I'll benchmark BSD, Linux, Windows, and choose the fastest OS."
They do if they want to build a single-purpose, high-performance MySQL server or cluster.
Umm, actually, that was a "professional" translation, not a fansub.
I think you missed the irony.
It should also be mentioned that one of the more popular eDonkey clients for *nix, mldonkey, also functions as a Bittorrent client. The latest CVS of mldonkey also supports multi-network downloading.
I'm pretty sure I once saw Win32 binaries of mldonkey out there, but I'm not sure if they are recent or have been updated at all.
Hell, they *froze him* at the end of Season 7, so why didn't they just keep him frozen and let Don Davis continue being the great performer he is?
Actually, Don Davis wanted to reduce his role in Stargate SG-1 so that he could persue his interest in painting. You can verify this by reading transcripts of his statements at the Stargate SG-1 conventions.
In the end, I think the decision to "promote" RDA was both his and Davis's desire to reduce their involvement in the show.
So they're heading to an oh-so-delicious Catch-22. Or, they could just pay some senators to *fix* the DMCA and make it even more ridiculous...
And then there is the spork, who inherits the benefits of both worlds. OS X perhaps?
Some chemistry major friends of mine decided to test a bunch of water filters by passing water with a known contaminant through the filters and testing the filtered water with an atomic absorption spectrometer.
Basically, they found that there was no difference between regular and premium Pur filters. However, they found out that the Brita filters were the best overall. I'd link to the results, but they only exist in dead-tree form.
Oh, a cool thing to do is to crack open one of the filters and look inside. One thing my friends noticed about the cheaper (and usually less effective) filters is that they were mostly full of ion-exchange filler rather than activated carbon.
Rubbing alcohol is isopropyl alcohol. Unless your filter happens to be a reactor or contain some free radicals, you'll never get ethanol (drinking alcohol) out of it.