Correct, and the ionosphere is not where the weather all is.
OK, my bad. Somebody who's an RF type: Remind me again if the two GPS bands (civil and military) are chosen for their immunity to or responsivity to atmospheric parameters.
Several 757s are configured for use as Air Force One when the President is going somewhere too small to handle a 747. Honestly, I think risk-averseness is driving the decision to stay with the 747 more than anything else. The president's plane has always been the biggest 4-engined Boeing built, and what's the point of changing that when you don't have to. Will it cost more than some other option? Maybe, but all things POTUS bleed cash anyway, so is it worth modifying a design that fits into a 747 now and having to debug it later for at best a marginal cost savings?
is missing in this notion. Meaningful Earth observation from space is done with cameras that take up more physical space than a cubesat. Yeah, you can squeeze several high definition cameras into a cubesat, but the moment you realize that you need something other than visible band, temperture control on the ccds, and the power-aperture to beam that stuff down to earth in a meaningful timeframe, you've built 1500lb worth of overhead around your tiny little cubesat and you're back in GOES and NPP land.
Exactly. You need to control the hardware with physical security, or none of your fancy software solutions are valid. And yeah, then you have to worry about vendors, and where the factories are, and do you pay your security guards enough.
Here's the problem: if you care about security to the point where screen locks are serious business, you've gotten yourself into a contradictory set of requirements: both trusted and untrusted users have physical access to and execution priveleges on a terminal. If you really suspect that your users are untrustworthy enough to steal credentials in this way, the answer is to not have a screenlock at all but to push the security barrier further into the system. The terminal is dumb and has no security model, but to access and/or interact with your proprietary information, the user types credentials into your own custom coded application or web form through a browser and it logs him out after N minutes and requires reentry of the credentials. He's not allowed to run any code on your system, and all the directories, executables and shell scripts that are run in the course of interactring with the terminal are marked 755 or 744 as appropriate so that he can't modify them, and the tmp dir resides in a ramdisk that gets wiped between sessions. Then it doesn't matter if everything is permitted over the X11 protocol, because there is no way to spoof anything from that untrusted terminal. Physical security goes a long way in obviating risks from software vulnerabilities, where practical. And if the data being guarded is sufficiently important, it will be made to be perceived as practical.
Speaking of... how do they intend to control stray sunhlight reflecting off of this giant disk?
And if memory serves, as recently as the 1860's, the Brits were supplying arms to the Confederacy, so in the late 19th century, it wasn't all smiles and sunshine the way it has been since WW2.
Someone with a biology degree, quick! at what cooking temperature does DNA break up?
Hippies jumping in front of priuses?
Which is all the more impressive considering that it was the current dear leader that invented mathematics, theorems, and the abstract concepts of proof and discovery.
Just came back from Shanghai last week. 15 hrs there, plus an hour+ on each end going through baggage check and customs. 13 hrs back plus same overhead. I'd call that burning a whole day in each direction.
Depends on who I am. If two days of my time wasted on travel costs more than the price difference, I'd definitely pay. If it's less, but not too much less, I'd pay. If its work that only I can do and it needs to be done sooner rather than later, there's no good way to put a dollar amount on it, but I'd probably pay. If it's just for me and not my company and I can afford to blow an extra 10k to treat myself, I might pay. And it depends on the savings. If 7hrs to Europe gets cut down to 1 hr and 15 hours to Asia gets cut down to 1 hr 30 minutes, people would pay even when it's a financial looser, because even if you don't charge/make 500/hr, you might still hate flying enough to eat the cost difference anyway.
My sarcasm detector is registering a 50% confidence metric, but I'd still rather work with, listen to, and play games by people who aren't ignorant about the war of 1812 and the cotton gin.
Leaving a blank root password during install on Debian disables login access to the root account from any terminal or the root console. There is still a root account, but it can only be accessed with sudo -s; su - by a user in the wheel group.