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Comments

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Your Next Online Order Could Be Delivered To Your Car's Trunk

psychogre Private business deliveries too? (162 comments)

Obviously, there's no way to limit who would be eligible to be able 'deliver to your trunk'.
This would be a easy way to make purchases of illicit materials without having to meet face-to-face. But would you trust someone else with access to your car's trunk?
On the flip-side, perhaps this could turn into a mobile version of geo-caching...

about 6 months ago
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Ask Slashdot: What Games Are You Playing?

psychogre Re:Old N new. (669 comments)

i've never been an avid gamer, but the two games that really held my interest are:

Outpost 2 - establishing a colony on alien planet, somewhat similar to the Factorio game mentioned above. It was released in 1997, but still playable on a Windows 7 machine. I play it for a few weeks every so often, but have to put it aside when my blood pressure goes up.

Kerbal Space Program - you get to build rockets, crash spectacularly, build right the next time and finally get to orbit. I know I've only scratched the surface of its vast array of rocket parts and rich solar system, but it gets my mind thinking up all sorts of things to do in the game.

A third game but not on the computer, 'Wife', occupies a lot of my potential time on the first two games...

about 6 months ago
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Up-Front Seats For Tonight's Near-Earth Asteroid

psychogre Other than the date, why is this a big deal? (99 comments)

There are large asteroids passing near the Earth fairly often - this particular asterioid, 2000 EM26, will get only 8.8 Lunar Distances (LD) away. One that is more than three times its size, 2006 DP14, passed closer at 6.2 LD last week. Check out www.spaceweather.com for a list of recent and future NEAs, plus lots of other stuff.
If it were a large asteroid passing within the orbit of the moon (< 1.0 LD), now that would be worthy of a broadcast event like this.

about 6 months ago
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Ask Slashdot: Scientific Research Positions For Programmers?

psychogre Look closer at scientific publications' authors (237 comments)

If you peruse the scientific publications of your interest (mainly geology?), note the various authors' affiliations - in addition to universities/colleges, some will be from government agencies and/or their contractor companies. That will give you a good starting point to ask around about openings and/or other companies doing similar work.
I've been working 20+ years for a contracting company, doing space science data analysis and research for a government agency. Projects change every so often (keeping things interesting!), and I get co-authorships on the occasional publication. While my Bachelors degree is in *solid earth* Geophysics (+ unofficial CS minor), the strong programming skills with a math/science background has worked out very well for my situation. Hope it does for you also.

about a year ago
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Ugly Truth of Space Junk

psychogre Size matters! (185 comments)

Space junk comes in so many sizes. Satellites and space stations have shielding to protect themselves from the smallest junk pieces. They can also make slight shifts in their orbits in order to avoid collisions with the pieces of junk that can be tracked, down to about 4 inches.
But the junk between about 0.5 -4 inches is too small to be tracked, and cannot be effectively shielded against. They have to rely on luck...
Junk in low earth orbit is also more likely to be traveling in all sorts of different orbits (inclination, eccentricity and precession rates), so a satellite could be hit by junk pieces coming from several different directions at once!

more than 3 years ago
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Ask Slashdot: How To Monitor Your Own Bandwidth Usage?

psychogre Bitmeter (319 comments)

Bitmeter is very nice. I use it on my gateway computer to measure the total in/out traffic for the household. It shows usage at hourly, daily and monthly intervals.

It seems to me that if the ISP is going to impose these caps they would be obligated to provide such tools for their customers to monitor their own usage.

more than 3 years ago
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College Application Inflation — Marketing Meets Admissions

psychogre Runaway Admissions Cycle (256 comments)

This is getting ridiculous!
High school seniors are now being encouraged to submit applications to at least 8-10 colleges, since the acceptance rates have been going down. The acceptance rates have gone down since the colleges are getting more applications. Where will this end?
Colleges have the unenviable task of trying to figure out how many of the applying students to admit, while trying to factor in how many of those will actually accept. Many of those students may not really want to attend there, but applied there out of fear of not getting in their first choice college. The ones getting rejected may actually want to go to that college, but are shut out due to the sheer numbers of other applications. The lucky ones may end up on a wait list, but being in limbo like that is hell.
Some college applications actually ask how many other colleges (and sometimes ask for names too) are being applied to by the student.
Perhaps they will start asking them to rank them too.

more than 3 years ago
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A Look Back At Bombing the Van Allen Belts

psychogre Certainly don't want to do that today... (237 comments)

Those radiation belts are composed of trapped electron and proton particles, bouncing back and forth along those magnetic field lines. There are several numerical models that predict what the population of these particles based on their location, and general behavior under different conditions (solar cycle variations, solar flares, etc).
Anyone building a satellite will use those models to determine what levels of radiation levels the satellite will encounter along its orbit, and add on the appropriate level of shielding to protect the electronics.
A nuclear bomb will never be able to alter the shape of the belts. All it will do is add a spectacular amount of electron and proton particles to the radiation belt, potentially frying the electronics of most of the low to medium orbit satellite (geosynchronous ones will probably be ok). Depending on the size of the bomb, the radiation belt may take weeks or even months to return to a 'natural' state.
There are some experiments in the works to 'tweak' the radiation belts by beaming low frequency EM waves, to change the energy of the existing particle populations. In theory, that will enable some of the particles to become 'untrapped', thereby reducing the overall population.

more than 4 years ago
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The Space Garbage Scow, ala Cringely

psychogre Nice idea, but it will never work. (221 comments)

IANARS (I am not a rocket scientist), but have done much work-related research in the space junk population calculations.

Many other posts have already stated that most of the pieces of junk will never be able to be captured with way, due to small size and/or relative velocity issues.

We will never be able to effectively use space travel until we solve this. If the space junk population continues to increase, it is liable to set off a collision cascade effect (Kessler syndrome) - errant junk colliding with larger pieces to create more small pieces to collide with other objects, and so on. Kinda like a nuclear reactor, or the analogous 'room full of ping-pong-loaded mouse traps' demonstration... Space travel could be even more dangerous when this happens.

For the time being, we can steer our craft around the larger pieces of junk that we can track, put shielding on our craft to protect us from the small pieces. But there's a size range of pieces that are too small to be tracked, but too large to be effectively shielded.

The solution to this problem has to start at the top - take out the biggest pieces of space junk - that will reduce the chance of the collision cascade effect. A fleet of mini space tugs, each programed to safely de-orbit a specific piece of junk, should be able to put a significant dent in the problem. The use of lasers would complement the work. Hopefully, as our technology and experience increase with this, we'll be able to remove the smaller pieces as effectively.

more than 4 years ago

Submissions

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Poll idea for the new year

psychogre psychogre writes  |  about 7 months ago

psychogre (1475893) writes "I pronounce "2014" as
* "two-thousand fourteen"
* "twenty fourteen"
* "two-zero-one-four"
* "seven-D-E"
* "this year"
* exactly how it is spelled
* however Cowboy Neal does"
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Post-Valentine's Day Poll

psychogre psychogre writes  |  more than 5 years ago

psychogre (1475893) writes "Poll Idea for post-Valentine's Day :

What is the longest romantic relationship you have had with another person?

* a furtive glance
* a longing look
* until I opened my mouth
* half a date
* a whole date
* one week
* 1 month
* 6 months
* 1 year
* 5 years
* 10 years
* 20 years +
* as long as the dream lasts"

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