Comment Re:A field in its infancy (Score 2) 70
Everybody generalizes from a single example. At least, I do....
Everybody generalizes from a single example. At least, I do....
One (simple) dust-cloud accretion program is located here:
http://sourceforge.net/projects/accrete/
Accrete is a physical simulation of solar system planet formation,
originally published to Usenet-- probably comp.sources.unix-- in 1991
by Joe Nowakowski. This software is in the public domain.
This simulation works by modelling a dust cloud around a Sun-like star,
injecting a series of masses which collect dust, and form planets.
The simulation then determines what the planetary environments will be
like in terms of temperature, atmospheric composition, and other
factors. The system description is saved to a file named "New.System".
The following output will give a good idea of the end results:
SYSTEM CHARACTERISTICS
Mass of central star: 1.247 solar masses
Luminosity of central star: 2.875 (relative to the sun)
Total main sequence lifetime: 4339 million years
Current age of stellar system: 3091 million years
Radius of habitable ecosphere: 1.696 AU
[
Planet #4:
Distance from primary star (in A.U.): 1.038
Eccentricity of orbit: 0.004
Mass (in Earth masses): 0.383
Equatorial radius (in Km): 4675.0
Density (in g/cc): 5.344
Escape Velocity (in km/sec): 8.08
Smallest molecular weight retained: 12.16 (CH4)
Surface acceleration (in cm/sec2): 698.22
Surface Gravity (in Earth gees): 0.71
Boiling point of water (celcius): 53.6
Surface Pressure (in atmospheres): 0.146
Surface temperature (Celcius): 8.39
Hydrosphere percentage: 50.46
Cloud cover percentage: 22.87
Ice cover percentage: 3.61
Axial tilt (in degrees): 23
Planetary albedo: 0.177
Length of year (in years): 1.06
Length of day (in hours): 18.14
You're looking for something like the Leviton 57xxx series TVSS, which provides 3-phase WYE protection for all phases to ground, all phases to common/neutral, and common to ground. It's designed to handle extreme events like a close lightning strike or loss of phase. It's got field-replaceable modules so you can replace them if they blow their fuses or MOVs without needing an electrician.
It gets installed between your house power feed and your primary distribution breaker panel. (If you have a primary disconnect switch, it would go there, otherwise you can get a variant of this with an integral disconnection switch.)
You'd be looking at a cost of about $4000 including installation.
I used one in a small datacenter in front of a 20kVA Powerware 9330 UPS.
Add Verizon DSL in Manhattan, NY:
http://n3.netalyzr.icsi.berkeley.edu/summary/id=ae81b058-20468-26aad796-356d-4fce-806b
I was using my own nameservers before, but I'd recently swapped out my older Linksys BEFSR81 (which was becoming flaky) to an E2100L.
Its DHCP server was using Verizon-supplied nameservers by default. Fixed that, thank you ICSI team.
Most paper in books don't last that long. I'd guess 150 years is the limit.
You're right that most mass-market paperback books won't last that long, at least not without significant yellowing and deterioration. However, any trade edition paperback or hardcover book ought to be made from acid-free paper, which is supposed to be good for hundreds of years if kept in reasonable archival storage conditions.
http://en.wikipedia.org/wiki/Acid-free_paperwikipedia link
The documents we do have that are much older were made using a (more expensive) process which includes durability as a side effect. There's no way one can produce the volume of books we do using that kind of process - it would be prohibitively expensive.
This is true, although it's more because a lot of cheap paper around nowadays is made by recycling, which means using bleaches and acids to remove the old print. (But recycled paper is more often used for newspapers and napkins than for books....)
Back in time, they tended to use natural fibers like Egyptian papyrus or cotton, rather than wood pulp, which tend to last longer than paper made from wood pulp.
There are several extensions to the USB spec, among them is the "Battery Charging Convention":
http://en.wikipedia.org/wiki/Universal_Serial_Bus#Power
http://www.usb.org/developers/devclass_docs/batt_charging_1_1.zip [zip'ed PDF]
If you force Vsync on the display preferences, you'll prevent the game from trying to render faster than 60Hz.
Depending on the game, it might only recompute physics, check for collisions, etc at the same rate it renders frames-- which means that if your hardware is capable of going faster, you might get slightly more realistic behavior if it goes faster than your monitor refresh rate. On the other hand, if your system is chugging, you might find shots passing through their targets.
Other games keep rendering and gameworld physics stuff separated, and do world physics updates at some rate like 100Hz regardless of the display framerate.
You mean like octarine?
Adobe is about 28 this year. It's Photoshop that is 20.
Geeky personality, check. Facial hair, check. Chest hair, check. Gray hair, check. Glasses, check. Soft and cuddly, big time. Not overly concerned with appearances, check. Doesn't watch weight, yep. Passionate sports fan, GO PACKERS. Cries at sappy films? More often than not. Reads a lot, check. A few flaws? Define "few".
According to this, in London, I'd be a total superconducting babe magnet!
(Thankfully, my blushing bride gives me many reasons to not test that theory out.)
This is the theory that Jack built. This is the flaw that lay in the theory that Jack built. This is the palpable verbal haze that hid the flaw that lay in...