Forgot your password?
typodupeerror

Comment: Expectation Management (Score 3, Interesting) 182

by ka9dgx (#47896897) Attached to: The MOOC Revolution That Wasn't

I completed the Stanford AI course, recently did a course in communications from the University of Amsterdam. In both cases, time management was a problem for me, I simply had other things to do, and drifted away... catching back up in the nick of time. Trying to fit distance learning into the regular schedule of campus life seems to be the problem here... it is definitely not the depth of material that is any kind of a stopper.

I think that guided deep dives into topics we would otherwise not understand, is going to be how we keep accumulating knowledge as a species in the future. Deep diving takes time, and unlike the real diving... it doesn't all have to happen in one shot.

On a side note... it is worth at least $20 to me... possibly much more... if someone can give me the deep dive that results in me understanding the Higgs field, and the Higgs particle. A true understanding... not some vague notion of mexican hats and potential.

Comment: Unchecked governmental BS (Score 4, Interesting) 499

by ka9dgx (#47876599) Attached to: Researcher Fired At NSF After Government Questions Her Role As 1980s Activist

It is utterly offensive to me that the State Department gets to decide who and what groups are "terrorists". Free Association is one of the key tenants of a functioning Democracy.

I find the associations between lobbyists and government officials to be a clear and present danger to our country... but what can I do about it?

Comment: Bad Security Model in the first place (Score 1) 331

by ka9dgx (#47689963) Attached to: Ask Slashdot: How Dead Is Antivirus, Exactly?

The root cause is that the security model of Unix that everyone copied isn't compatible with the modern world. The OS never asks what resources you want to allow a given program to access, instead it ass-u-me-s that it should have full run of everything, and just trusts the program to do the right thing.

So antivirus programs were invented to serve as a "no-fly-list" type system.... only programs on the list are stopped. This worked well until methods for changing the signature of programs got up to speed. Imagine a terrorist being able to make up a name before trying to buy/board a flight... this is where we are now.

Until we get the OS to ask what resources a program should be allowed... things will keep getting worse.

Comment: Long wave radar precision (Score 1) 275

by ka9dgx (#47632073) Attached to: Long-Wave Radar Can Take the Stealth From Stealth Technology

The lowest frequency you could use to track a target should be on the order of one that results in the target being 1/2 wavelength. Given the F35 is 16 meters long, that works out to about 10 Mhz. I highly doubt there is an effective way to absorb/deflect a radar pulse at such a low frequency (and depth of penetration) in an aircraft.

I've known this since the 1980s... I highly doubt that I'm in any way unique. I expect there are a number of spread spectrum 30-50 Mhz radars out there, just for catching "stealth" targets.

What hath Bob wrought?

Working...