gorloth
Joined 15 years ago
Karma
141
Submissions
24
Member since
May 19
Recent submissions
Comment · 4 years ago
Higher dimensional geometry can show up in lower dimensional problems. This numberphile video (https://www.youtube.com/watch?v=6_yU9eJ0NxA) involves a puzzle about throwing darts at a dart board which is solved by using the volumes of 4+ dimensional spheres.
Comment · 6 years ago
Error 404:
The item you are seeking
Cannot be found hereComment · 6 years ago
Taking the difference between normal complexity and asymptotic complexity to the extreme you have https://en.wikipedia.org/wiki/Galactic_algorithm which do have the best asymptotic performance, but only on values of n so large they never come up in real life.
Comment · 12 years ago
This seems to be similar to the usage of WAAS in the US (http://en.wikipedia.org/wiki/Wide_Area_Augmentation_System), just on a smaller geographic scale. One of the bigger sources of error in GPS today is due to various atmospheric effects that bend the signal and increase the signals propagation delay. A ground stations in a known position can generate correction for the errors but the farther it's from the ground station the less useful the correction is. I've seen GPS systems used in farming applications that use a local tower that can provide corrections to give a very accurate position for the local area.
Comment · 13 years ago
personally I find "short reply OK" to be preferably. It comes across as less harsh, it tells the other party that you are ok with removing the random fluff if they want to. VSRE is a demand that all the fluff be removed
Comment · 14 years ago
I've had similar experiences with AVRs, they are quite robust and will handle shorts, reversed polarities and the like rather well. They seem to be rather conservative on the datasheets probably as they are guaranteed over a much larger temperature range than most people use their chips at.
Comment · 14 years ago
I second the recommendation, I've been using lean's service for a rather long time (I've go boards from back before he worked out the right purple color) and I've always been happy with the speed and quality, it's a great service.
Comment · 14 years ago
This is not entirely true, in an ideal world a CMOS device just sitting there not switching would use basically no power, but in actual application there is some leakage (both form not being fully off and some current jumping from the gate). This leakage gets worse as the transistors get smaller and when you have billions of transistors even the tiniest amount of leakage adds up, the result is leakage current can be a significant amount of the power used by a modern processor.
Comment · 14 years ago
I completely agree with the sentiment about high college costs, the state school I went to cost ~44k for all four years, add in various scholarships (some of which I got as I'm pretty sure I was the only person to apply for them) and internships and I graduated college with no debt and more money than I started. Going to college does not necessitate taking on crushing debt, it just requires some extra legwork and picking a school that more fits your budget.
Comment · 14 years ago
This is true, the flexibility you get form being able to reconfigure things does result in less efficiency (speed, size, power) than some dedicated hardware. An FPGA can be more efficient than general processor if it can be tailored to the specific computational task, but it will still be slower than if you made an IC with the specially tailored hardware.
Comment · 14 years ago
The microcontroller being used can be setup to appear as a standard USB mouse/keyboard, so this should work with anything that supports a USB keyboard and mouse.
Comment · 14 years ago
"It was very surreal. Just a small csv file emailed to the investigator."
from Nate down in the comments section