from the article:
"The propellant required to inject the spacecraft from Earth orbit to the Mars transit trajectory is then 51.7 tonnes for the ISPP case and 130.3 tonnes for the non-ISPP option. In terms of total payload mass launched from Earth, the ISPP option would result in a 60-percent lighter vehicle -- just 86.8 tonnes, compared to 218.5 tonnes for a vehicle carrying its own fuel for the return trip.
With current launch costs as high as $4.5 million per tonne ($2,000 per pound), the use of ISPP can save nearly $600 million."
I couldn't RTFA because the server is bogged down, but this brings to mind a plan I saw discussed in a documentary somewhere (real reliable source, huh?).
Someone had designed plans to send a fueling station to mars which would generate the appropriate fuel from the gases in the Martian atmosphere. This cut down on the costs significantly, but the plans were ultimately ignored by NASA (maybe because of the number of corners cut) even though they were affordable by todays standards.
I did, and I can see how the author of this blog added a lot of spin.
for example:
He would deny the use of the Federal court system -- and even Federal precedent -- to people discriminated against because of their religious beliefs or sexual orientation
If you read the summary text of Bill H.R. 300 http://thomas.loc.gov/cgi-bin/bdquery/z?d110:HR00300:@@@L&summ2=m&, it's looks like power from the federal courts is being handed down to the states so that they can decide how to handle these issues. If the states have the ability to make laws the way they see fit, then citizens are better represented by them.
Haha I was in the dev alliance... remember EFFF? I still have that stuff installed on my computer. I made the image for the main character. Sorry for not having much time w/ the presentation... that group kinda fell apart.
I was at NYLF 2003 in San Jose and intel did a presentation on some wireless sensors they were researching. They were toting that they could be tagged onto trees and alert authorities of forrest fires at the point they started. A lot of interesting uses for this technology, although I'm sure someone will be object that it could be misused to invade one's privacy.
It seems like there is no tag saying the MacBook Pro is using a 64-bit processor upfront. You'd they the apple marketing house would want to emphasize this. The only clue I could find was in their product line comparison page--The MacBook is a "Core Duo" and the MacBook Pro is a "Core 2 Duo". Is Jobs afraid of misleading customers by saying it's 64-bit? I thought OS X had software that could take advantage of the 64bit core... Maybe it just means more memory though.
Oh well I'm no apple expert... I can't even afford one.
I used a boot disk to mess up deepfreeze in my shop class. I backed the file up, but class ended before I had time to restore it. I did however, install the Unreal Tournament demo. Turns out, because I forgot to bring the file back up, it wouldn't boot properly. Later I noticed all the IT guy did was swap my machine with one in view of the teacher, leaving UT on the computer. I almost got in trouble like you did too, but I guess they didn't have proof of when it happened.
Long story short: Use bios passwords and prevent booting from anywhere other than the local hard drive, lock your cases if you're paranoid. DeepFreeze and better policy are the way to go. For a while they were having competitions to award people if they were able to defeat DeepFreeze w/o using a boot disk. I don't think anyone did.
Slashdot Mirror
from the article: "The propellant required to inject the spacecraft from Earth orbit to the Mars transit trajectory is then 51.7 tonnes for the ISPP case and 130.3 tonnes for the non-ISPP option. In terms of total payload mass launched from Earth, the ISPP option would result in a 60-percent lighter vehicle -- just 86.8 tonnes, compared to 218.5 tonnes for a vehicle carrying its own fuel for the return trip. With current launch costs as high as $4.5 million per tonne ($2,000 per pound), the use of ISPP can save nearly $600 million."
I couldn't RTFA because the server is bogged down, but this brings to mind a plan I saw discussed in a documentary somewhere (real reliable source, huh?).
Someone had designed plans to send a fueling station to mars which would generate the appropriate fuel from the gases in the Martian atmosphere. This cut down on the costs significantly, but the plans were ultimately ignored by NASA (maybe because of the number of corners cut) even though they were affordable by todays standards.
Maybe someone else has heard about this too...
I did, and I can see how the author of this blog added a lot of spin. for example: He would deny the use of the Federal court system -- and even Federal precedent -- to people discriminated against because of their religious beliefs or sexual orientation If you read the summary text of Bill H.R. 300 http://thomas.loc.gov/cgi-bin/bdquery/z?d110:HR00300:@@@L&summ2=m&, it's looks like power from the federal courts is being handed down to the states so that they can decide how to handle these issues. If the states have the ability to make laws the way they see fit, then citizens are better represented by them.
Yeah, it's weird too because today's the first day I've posted to slashdot ever. I've always watched without participating much.
Haha I was in the dev alliance ... remember EFFF? I still have that stuff installed on my computer. I made the image for the main character. Sorry for not having much time w/ the presentation ... that group kinda fell apart.
I was at NYLF 2003 in San Jose and intel did a presentation on some wireless sensors they were researching. They were toting that they could be tagged onto trees and alert authorities of forrest fires at the point they started. A lot of interesting uses for this technology, although I'm sure someone will be object that it could be misused to invade one's privacy.
It seems like there is no tag saying the MacBook Pro is using a 64-bit processor upfront. You'd they the apple marketing house would want to emphasize this. The only clue I could find was in their product line comparison page--The MacBook is a "Core Duo" and the MacBook Pro is a "Core 2 Duo". Is Jobs afraid of misleading customers by saying it's 64-bit? I thought OS X had software that could take advantage of the 64bit core ... Maybe it just means more memory though.
Oh well I'm no apple expert ... I can't even afford one.
DeepFreeze doesn't slow the computer down at all.
I used a boot disk to mess up deepfreeze in my shop class. I backed the file up, but class ended before I had time to restore it. I did however, install the Unreal Tournament demo. Turns out, because I forgot to bring the file back up, it wouldn't boot properly. Later I noticed all the IT guy did was swap my machine with one in view of the teacher, leaving UT on the computer. I almost got in trouble like you did too, but I guess they didn't have proof of when it happened.
Long story short: Use bios passwords and prevent booting from anywhere other than the local hard drive, lock your cases if you're paranoid. DeepFreeze and better policy are the way to go. For a while they were having competitions to award people if they were able to defeat DeepFreeze w/o using a boot disk. I don't think anyone did.