Actually I think they will save more power with the curtains open than closed.
I'm shooting from the hip here but looking at the picture I expect there's a serious flaw here. The Curtains look black so they are absorbing a lot of light energy. We know they are highly inefficient. So they mainly heat your house.
SO in summer time you will pay more in cooling costs than you gain in electricity. Either that or be warmer. Logically you want the drapes outside where they would be amiently cooled.
Now if you draw the blinds and thus it gets darker and you need to turn on a light well. So much for any gains.
Finally most houses are designed to have their windows shaded more or have an oblique incidence in summer time. Thus during the time of maximum sun, and warmth you get the least electricity.
In winter time when the solar flux is less and there will be fewer hours of daylight the direction of incidence will be better. But chances are you'd like the light.
The drapes have no thermal mass so they act like the worst kind of traum wall where they heat up and cool down quickly. No thermal damping.
Seems like archecturally this is a bad idea from the get go regardless of how the solar fabric technology improves. Maybe in northern canada or something it makes sense.
When I was in school I found my recall was highly photographic and associative. I assume this is present to different degrees in most people.
When I recalled something in a book I would recall where on the page it was and what was around it. I'd recall how far I had to flip into the book roughly before i'd have to turn individual pages. Even the weight of the binding was memorable.
I found I could learn more from books that had heavy covers, and glossy pages for easy turing, layots that were generous not compact with lots of color and visual reminders.
Thus to me a pdf file of a book on the screen or a Kindle are just viscerally anti-cognative even though the information might be identical.
The visceral nature of a book in not replicated on laser printed and bound paper. It just does not flip right for me.
True.. but if you have physical access you can "bug" the system thereby getting true wholesale with greater effect, and less chance of detection.
Yes but the list of suspects it too small to be comfortable. With the internet you can sit on your Nigerian internet cafe all day long and have no fear of prosecution.
From their FAQ: For a typical system on a typical broadband line, Mozy backs up data at about 2-4 GB per day. But if left undisturbed on a fast connection, you can back up over 9 GB in a single day.
My dad's initial backup of 7GB's of data took significantly less than a day on a 1Mb upload cable line so I don't think they throttle on their end.
Yes that's what I was quoting. But remember that most home internet connections are assymetric. e.g. 3Mb/s up and 786/s down or other variations on that.
I was looking at mozy at your suggestion. Thanks. Four things about it kind of bothered me. One is that the initial upload is at 2-5 GB per day. So to get started with 100GB would take a lot of days.
Second, when I'm uploading initially I might actually have the patience to wait a month or two for it to complete the one time operation. But if I have a disk disaster I'm certainly not willing to wait three months to recover my data. I'd rather not even wait 1 day for them to mail it to me.
four they don't disclose what the fee or turn-around time to mail the DVDs to you. Or how you get the data off of them.
I'm a tad nervous about the non-archival 30 day delete. I could imagine it taking me more that 30 days to realize I deleted my itunes music folder or my wedding photos. So this does not seem like a complete replacement for archival storage. So it's almost like you have to be aware you deleted something or it got bit-rot right away. Not likely.
So It's better for the near term storage than archival except that it takes 3 months to restore your crashed disk. Which is a deal killer.
If you wanted archival storage I guess, on a mac, you could point mozy at time machine disk. But that is going to grow to terrabytes to restore!
Now if I was only trying to backup 2 or 4 gigs of of stuff then maybe it's not so bad. Pick the most valuable shit and back that up. Cheap protection for that and workable. Actually cheaper than burning a DVD everyday!
As I was trying to point out, even when the computer is nearly free ($200) the power and disks are the dominant costs. So it make sense to put hook them to a computer you would be using anyhow.
One more computer is one more thing to adminstrate, make noise, heat your office, and crash.
the drives I attach to the desktop are also exported so anyone can reach them. And since when one is sharing a disk some computer either has to be on all the time or easily woken from sleep.
As long as I have to have a computer on, i'll make it the desktop not the server in the garage. And in most households one can even let the computer sleep since walking over to the den to wake it so it can begin sharing to another computer is not that big a deal.
My problem with online storage is that I have more than 30GB of photos and MP3s and e-mail. And I prefer to operate in a mode where I back everything since it's faster to recover if I have a disk image.
Also with on-line storage the outbound time may be incremental but when you actually want to use it the bandwidth is non-trivial. Even keeping a disk mounted webdav or ftp for long enough to move 30GB is moving to the dicey regime. PLus there may be a bandwidth cap.
personal storage servers
on
What NAS To Buy?
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· Score: 5, Interesting
At one time I got myself a brand new $200 P4 (back when it was still the best chip) at a grand opening of an Office max, plugged in a whole pile of drives and set up a software raid 10.
Then I did the math. the power bills to run this thing 24/7 were going to be more than the cost of the computer. My disks would be pretty much spinning all the time even though for home usage i'd say I actually hit non-local disks maybe a few times a week at most.
So I sold it and went to external (firewire) disks and attatched them to computers I was already using. This makes so much more sense as a backup system. It actually cost less both in terms of chassis and power for a small system.
Even better is that I can detach the disks and take them offsite (my office desk at work) and rotate in new disks. my big fear is not losing my last week of stuff but losing say all my family photos or long term bussiness records, manuscripts etc. So really an always-on raid is not as big an issue to me as off-site storage. Because I rotate the disks I still have duplicates of everything.
The other nice thing is that since I have a wireless G network, when I want fast access to the disks I can move them from my desktop to my lap top.
Now some people say well, those external disks are more expensive because of their chasis and interfaces or that they are slower. But not really. with the dedicated server solution you have the computer and interface cards to buy. Probably a separate screen and keyboard as well. The power consumed is far more. And for low duty cycle usage you don't have to spin the disks all the time.
It's not different. But my reply was relevant to fonic.
Re:But can they ship 100,000,000 phones per year?
on
What Happened To Palm?
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· Score: 1
Would you buy an app that runs on both your computer and your phone over one that does not? as an end user i'd be more tempted by having the dual function.
For low demand apps, perhaps running them in the cloud over a browser interface will suffice. But some, like games and medical imaging are better on local hardware.
Want to make a chat application? Have an ssh session running in the background? Have the wifi card work as a wireless router with an internet connection through the cellphone service? Nope, sorry. The hardware can do it, but it's not part of Steve Job's vision.
You clearly did not watch the Keynote. They ridiculed this idea for mobile computing. Backround apps are the death of your battery. Do you really want to be dicking with task managers on a mobile device to find out what's using up your resources? And then there's apps that want persistent connections. Apple finessed that by giving away push notification server available to all developers.
In the future your persistent connection (e.g the ssh connection) will be running on a server not on the iphone. The display might be on the iphone but the ssh session you are monitoring won't be on the iphone. You can stop and start this display app, just like it were a VNC connection or a unix "Screen" connection without affecting the ssh operation.
Yes they have chat too. Yes Jobs said they will allow wifi phone service.
You really ought to watch the keynote since you are quite mistaken in your information.
The reason I think RIM will linger and then die is that they don't have the economic resources to compete with the iphone. They'll linger because they are damn good at what they do do. Bussinesses like them for the present better than iphones. the iphone killer app has yet to be written. And then there's the exclusive carrier contracts. But over time they won't beable to keep up with the application dev and versatility of the iphone.
Nokia has the cash flow to try and fail four or five times from scratch against the iphone. They have the engineering chops to compete on performance. And if their first few attempts fail, the worst that happens is they lose the high end phone market till they come up with something to rival the iphone.
Android the ability to compete with the iphone on apps and speed of software innovation. It can be backed by the google cloud and that may possibly turnout to be better than the apple cloud (though apple would just switch over if that were the case, but it would erase an apple exclusive advantage).
Android + samsung can produce both awseome hardware and software at affordable prices and with substantial cash flow to back it till it catches on.
But Apple still has a killer advantage: OSX and platform integration. OSX means people can write Hub apps for the apple desktops and then have companion mobile apps for the iphone. You won't have to re-write your code or support two platforms. Or have compatibility libs. Heck you won't even have to have two IDEs: Xcode does it all. So both from the developer and consumer point of view apple is much more fascile and seamless.
Apple recently bought a low power chip maker so the horse power and battery lifr in these is going to keep getting better. Since apple will always be able to more tightly couple the OS and hardware, they are going to get every drop of power out of this thing. It used to be that it was the communication hardware that ate the batteries. Presumably nokia's better at that but with the new generation it's the computing and screen display power. Things like background service will eat your battery. Apple thus may have the better hardware strategy as well as the better software strategy.
Buying and selling their own name to themselves for 6 years. Leave palm alone. Just leave them alone. Can't you.
Way back, Palm was not the only company making PDAs. They succeed because all the applications that were developed for them. Is anyone writing apps for the palm? Palm does not even know if it's Palm OS or WindowsCE.
Rim was the next palm because they went the next step and integrated the back office into the thing with secure push e-mail and other apps.
The iphone iswhat is next. It's not the touch screens per se. It's the fast processor and great IDE that will lead to the next generation of apps. If you saw the keynote you know I'm not blowing smoke: They showed a full blown medical imaging application ported to the iphone in less than a man week.
The touchscreens main virtues are it's large area on a small device, and it's morhpability to the application. This is the next step. This is why for example Rim will be next to die after Palm. Look to Nokia and Android to actually compete against the I phone.
Sure I grock the term "PPU" and can maybe even imagine it's got some fast elastic particle simmulations.
But what "physics" is really there. What's the interface look like.
Is it real physics? Would it be good for say simmulating chemical dynamics with quantum or classical force fields? COuld I use it to model the hydrodynamics of a sail boat cutting through the water?
What about applied math or engineering physics like say the propagation and attenuation of sound in a turbulent atmoshere or concert hall.
What about a piece of rope falling, a flag in the wind, or a ball and spring model?
Just what does this do and how does the interface look?
if possible compare it to CUDA since I know what that does.
Has anyone seen this work on Tiger? If so what's the configuration where it actually works. My wife's notebook runs Tiger, and the exploit worked there. The same set of configurations for which it works on Leopard seem to work on Tiger, too:
User must be logged into the desktop environment (not just logged in through SSH). You must not have used Fast User Switching to log in. ARDAgent must not be running.
Empirically I can tell you that is not suffcient. Not a single tiger I tested was configured that way and it still would not run. I've never seen it run on any Tiger Machine.
Or you could try to thermally load them in patterns that produced different tones on the fans (or maybe an AM radio) record it then speed it up. Maybe you could make it sound like a baluga whale.
Or maybe you could implement a virtual machine cluster of 250 cores. The repeat the process till you see how many virtual machines you can stack on top of each other till it has the same speed as a single processor.
While this might sound stupid this would give us a rough estimate of how many watts per virtual world it takes and from that we could figure out how many layers deep in the simulation we actually live assuming the top level one is powered by something less than 1 sol of power.
or work out all possible moves in N-space tic-tac-toe. The only smart move is not to play.
Slashdot Mirror
Or send a threatening note to the white house along with pictures of swarthy people in turbans. Fast track them to Guantanamo.
An irrigation system as that seems to get a system recovered.
Black out curtains are usually white-backed just for this reason.
If you are trying to cool with curtains you want white curtains.
Actually I think they will save more power with the curtains open than closed.
I'm shooting from the hip here but looking at the picture I expect there's a serious flaw here. The Curtains look black so they are absorbing a lot of light energy. We know they are highly inefficient. So they mainly heat your house.
SO in summer time you will pay more in cooling costs than you gain in electricity. Either that or be warmer. Logically you want the drapes outside where they would be amiently cooled.
Now if you draw the blinds and thus it gets darker and you need to turn on a light well. So much for any gains.
Finally most houses are designed to have their windows shaded more or have an oblique incidence in summer time. Thus during the time of maximum sun, and warmth you get the least electricity.
In winter time when the solar flux is less and there will be fewer hours of daylight the direction of incidence will be better. But chances are you'd like the light.
The drapes have no thermal mass so they act like the worst kind of traum wall where they heat up and cool down quickly. No thermal damping.
Seems like archecturally this is a bad idea from the get go regardless of how the solar fabric technology improves. Maybe in northern canada or something it makes sense.
Your ideas for cues is quite good.
When I was in school I found my recall was highly photographic and associative. I assume this is present to different degrees in most people.
When I recalled something in a book I would recall where on the page it was and what was around it. I'd recall how far I had to flip into the book roughly before i'd have to turn individual pages. Even the weight of the binding was memorable.
I found I could learn more from books that had heavy covers, and glossy pages for easy turing, layots that were generous not compact with lots of color and visual reminders.
Thus to me a pdf file of a book on the screen or a Kindle are just viscerally anti-cognative even though the information might be identical.
The visceral nature of a book in not replicated on laser printed and bound paper. It just does not flip right for me.
True.. but if you have physical access you can "bug" the system thereby getting true wholesale with greater effect, and less chance of detection.
Yes but the list of suspects it too small to be comfortable. With the internet you can sit on your Nigerian internet cafe all day long and have no fear of prosecution.
hmm good point!
Internet theft: Wholesale
in-person theft: Retail
We make up the difference in volume!
I'm not worried about Retail level theft. It's the wholesale one that is more worrisome.
if internet theft has a success rate of 1 in a thousand but puts millions of people at risk it's more worrisome.
From their FAQ:
For a typical system on a typical broadband line, Mozy backs up data at about 2-4 GB per day. But if left undisturbed on a fast connection, you can back up over 9 GB in a single day.
My dad's initial backup of 7GB's of data took significantly less than a day on a 1Mb upload cable line so I don't think they throttle on their end.
Yes that's what I was quoting. But remember that most home internet connections are assymetric. e.g. 3Mb/s up and 786/s down or other variations on that.
I was looking at mozy at your suggestion. Thanks. Four things about it kind of bothered me. One is that the initial upload is at 2-5 GB per day. So to get started with 100GB would take a lot of days.
Second, when I'm uploading initially I might actually have the patience to wait a month or two for it to complete the one time operation. But if I have a disk disaster I'm certainly not willing to wait three months to recover my data. I'd rather not even wait 1 day for them to mail it to me.
four they don't disclose what the fee or turn-around time to mail the DVDs to you. Or how you get the data off of them.
I'm a tad nervous about the non-archival 30 day delete. I could imagine it taking me more that 30 days to realize I deleted my itunes music folder or my wedding photos. So this does not seem like a complete replacement for archival storage. So it's almost like you have to be aware you deleted something or it got bit-rot right away. Not likely.
So It's better for the near term storage than archival except that it takes 3 months to restore your crashed disk. Which is a deal killer.
If you wanted archival storage I guess, on a mac, you could point mozy at time machine disk. But that is going to grow to terrabytes to restore!
Now if I was only trying to backup 2 or 4 gigs of of stuff then maybe it's not so bad. Pick the most valuable shit and back that up. Cheap protection for that and workable. Actually cheaper than burning a DVD everyday!
As I was trying to point out, even when the computer is nearly free ($200) the power and disks are the dominant costs. So it make sense to put hook them to a computer you would be using anyhow.
One more computer is one more thing to adminstrate, make noise, heat your office, and crash.
The answer to your all your questions is no.
the drives I attach to the desktop are also exported so anyone can reach them. And since when one is sharing a disk some computer either has to be on all the time or easily woken from sleep.
As long as I have to have a computer on, i'll make it the desktop not the server in the garage. And in most households one can even let the computer sleep since walking over to the den to wake it so it can begin sharing to another computer is not that big a deal.
My problem with online storage is that I have more than 30GB of photos and MP3s and e-mail. And I prefer to operate in a mode where I back everything since it's faster to recover if I have a disk image.
Also with on-line storage the outbound time may be incremental but when you actually want to use it the bandwidth is non-trivial. Even keeping a disk mounted webdav or ftp for long enough to move 30GB is moving to the dicey regime. PLus there may be a bandwidth cap.
At one time I got myself a brand new $200 P4 (back when it was still the best chip) at a grand opening of an Office max, plugged in a whole pile of drives and set up a software raid 10.
Then I did the math. the power bills to run this thing 24/7 were going to be more than the cost of the computer. My disks would be pretty much spinning all the time even though for home usage i'd say I actually hit non-local disks maybe a few times a week at most.
So I sold it and went to external (firewire) disks and attatched them to computers I was already using. This makes so much more sense as a backup system. It actually cost less both in terms of chassis and power for a small system.
Even better is that I can detach the disks and take them offsite (my office desk at work) and rotate in new disks. my big fear is not losing my last week of stuff but losing say all my family photos or long term bussiness records, manuscripts etc. So really an always-on raid is not as big an issue to me as off-site storage. Because I rotate the disks I still have duplicates of everything.
The other nice thing is that since I have a wireless G network, when I want fast access to the disks I can move them from my desktop to my lap top.
Now some people say well, those external disks are more expensive because of their chasis and interfaces or that they are slower. But not really. with the dedicated server solution you have the computer and interface cards to buy. Probably a separate screen and keyboard as well. The power consumed is far more. And for low duty cycle usage you don't have to spin the disks all the time.
It's not different. But my reply was relevant to fonic.
Would you buy an app that runs on both your computer and your phone over one that does not? as an end user i'd be more tempted by having the dual function.
For low demand apps, perhaps running them in the cloud over a browser interface will suffice. But some, like games and medical imaging are better on local hardware.
So it's up in the air between android and Apple.
Want to make a chat application? Have an ssh session running in the background? Have the wifi card work as a wireless router with an internet connection through the cellphone service? Nope, sorry. The hardware can do it, but it's not part of Steve Job's vision.
You clearly did not watch the Keynote. They ridiculed this idea for mobile computing. Backround apps are the death of your battery. Do you really want to be dicking with task managers on a mobile device to find out what's using up your resources? And then there's apps that want persistent connections. Apple finessed that by giving away push notification server available to all developers.
In the future your persistent connection (e.g the ssh connection) will be running on a server not on the iphone. The display might be on the iphone but the ssh session you are monitoring won't be on the iphone. You can stop and start this display app, just like it were a VNC connection or a unix "Screen" connection without affecting the ssh operation.
Yes they have chat too. Yes Jobs said they will allow wifi phone service.
You really ought to watch the keynote since you are quite mistaken in your information.
The reason I think RIM will linger and then die is that they don't have the economic resources to compete with the iphone. They'll linger because they are damn good at what they do do. Bussinesses like them for the present better than iphones. the iphone killer app has yet to be written. And then there's the exclusive carrier contracts. But over time they won't beable to keep up with the application dev and versatility of the iphone.
Nokia has the cash flow to try and fail four or five times from scratch against the iphone. They have the engineering chops to compete on performance. And if their first few attempts fail, the worst that happens is they lose the high end phone market till they come up with something to rival the iphone.
Android the ability to compete with the iphone on apps and speed of software innovation. It can be backed by the google cloud and that may possibly turnout to be better than the apple cloud (though apple would just switch over if that were the case, but it would erase an apple exclusive advantage).
Android + samsung can produce both awseome hardware and software at affordable prices and with substantial cash flow to back it till it catches on.
But Apple still has a killer advantage: OSX and platform integration. OSX means people can write Hub apps for the apple desktops and then have companion mobile apps for the iphone. You won't have to re-write your code or support two platforms. Or have compatibility libs. Heck you won't even have to have two IDEs: Xcode does it all. So both from the developer and consumer point of view apple is much more fascile and seamless.
Apple recently bought a low power chip maker so the horse power and battery lifr in these is going to keep getting better. Since apple will always be able to more tightly couple the OS and hardware, they are going to get every drop of power out of this thing. It used to be that it was the communication hardware that ate the batteries. Presumably nokia's better at that but with the new generation it's the computing and screen display power. Things like background service will eat your battery. Apple thus may have the better hardware strategy as well as the better software strategy.
Buying and selling their own name to themselves for 6 years. Leave palm alone. Just leave them alone. Can't you.
Way back, Palm was not the only company making PDAs. They succeed because all the applications that were developed for them. Is anyone writing apps for the palm? Palm does not even know if it's Palm OS or WindowsCE.
Rim was the next palm because they went the next step and integrated the back office into the thing with secure push e-mail and other apps.
The iphone iswhat is next. It's not the touch screens per se. It's the fast processor and great IDE that will lead to the next generation of apps. If you saw the keynote you know I'm not blowing smoke: They showed a full blown medical imaging application ported to the iphone in less than a man week.
The touchscreens main virtues are it's large area on a small device, and it's morhpability to the application. This is the next step. This is why for example Rim will be next to die after Palm. Look to Nokia and Android to actually compete against the I phone.
Sure I grock the term "PPU" and can maybe even imagine it's got some fast elastic particle simmulations.
But what "physics" is really there. What's the interface look like.
Is it real physics? Would it be good for say simmulating chemical dynamics with quantum or classical force fields? COuld I use it to model the hydrodynamics of a sail boat cutting through the water?
What about applied math or engineering physics like say the propagation and attenuation of sound in a turbulent atmoshere or concert hall.
What about a piece of rope falling, a flag in the wind, or a ball and spring model?
Just what does this do and how does the interface look?
if possible compare it to CUDA since I know what that does.
User must be logged into the desktop environment (not just logged in through SSH). You must not have used Fast User Switching to log in. ARDAgent must not be running.
Empirically I can tell you that is not suffcient. Not a single tiger I tested was configured that way and it still would not run. I've never seen it run on any Tiger Machine.I've tried the ARDAagent on dozens of different people's computers now and it only worked on Leopard not on Tiger.
Has anyone seen this work on Tiger? If so what's the configuration where it actually works.
It also does not work on most Leopard computers as things like Fast User switching, or having remote desktop turned on (yes on) cause it to fail.
Now as for trojans. Well what can you say. All computers are vulnerable to trojans. The poker game would run on linux too.
in the case of the poker game download the mac is going to ask you three times:
1) The item being downloaded contains an application, are you sure?
2) The application being launched for the first timw was downloaded from the internet, are you sure
3) than finally when it asks for your password.
And at best it runs as user level without the ARDAagent escalation.
Rosetta @ home or fold.it
Or you could try to thermally load them in patterns that produced different tones on the fans (or maybe an AM radio) record it then speed it up. Maybe you could make it sound like a baluga whale.
Or maybe you could implement a virtual machine cluster of 250 cores. The repeat the process till you see how many virtual machines you can stack on top of each other till it has the same speed as a single processor.
While this might sound stupid this would give us a rough estimate of how many watts per virtual world it takes and from that we could figure out how many layers deep in the simulation we actually live assuming the top level one is powered by something less than 1 sol of power.
or work out all possible moves in N-space tic-tac-toe. The only smart move is not to play.
print it on archival paper with 2D barcodes.
if you were to use 0.1mm size pixels then an 8x10" page can store:
80*(25.4**2)*100 = 5161280 bits = 5Mbits/page
or 2.5Gb/ 500page ream.
so you just need 400 reams per 100GBytes and that includes some room for error correcting codes.
Given it will last 20 years, the rather large volume may be worth it.