Hoorah hooray, buy it on eBay!
Wednesday, May 31, 2006
Tuesday, May 30, 2006
Sounds Easy
this morning i figured out, sorta, how to get excel to pick out multiple maxima on a graph. it sounds pretty easy and i am sure there is an easier way to do it, but it was interesting to learn a few more things in excel.
first: i took the first derivative of the data. this is the change in y-value over the change in x-value. technically with a continuous function the value of 1st derivative at the peak is zero (it is also zero at the minima, ie troughs between peaks). my data is discrete so i don't usually hit the zero mark, but there is a change in sign of the first derivative.
second: i wrapped up a way to spit out if i was at a regular data point (false) or a minima or maxima (true). check for the sign of the current value of derivative to be different than the sign of the last value using SIGN using NOT. so if they are the same sign it spits out FALSE and if they are differnt signs then TRUE. added in an AND to make sure i only got the maxima by requiring the value of the current to be less than the previous (on the way down). and added a couple more and statements to adjust for noise in the signal and a threshold for peaks.
third: i used this web page for the basics of picking out values where there was a true and then just manually incremented for my max 5 peaks per graph that i needed.
Posted by Unknown at 5/30/2006 03:16:00 PM 1 comments
Saturday, May 27, 2006
Friday, May 26, 2006
micron 8-meg sensor
so dan, tell us about microns 8megpixel sensor were you invovled with this baby?
Posted by k2h at 5/26/2006 01:05:00 PM 1 comments
Thursday, May 25, 2006
tecno babble
this has some awesome analogies about marriage, including
"
Some have tried to install Girlfriend 7.0 or Wife 2.0 but end up with more problems than the original system. Look in your manual under "Warnings - Alimony/Child support". I recommend you keep Wife 1.0 and deal with the situation.
"
Posted by forkev at 5/25/2006 08:26:00 AM 0 comments
Wednesday, May 24, 2006
reader busted
reader is busted, but it points to this cool clerihew page. I wonder who wants to do a contrast comparison between a limerick and a clerihew. thats an exercise for you avid readers. all I can do is point you the to the path!
Posted by k2h at 5/24/2006 01:07:00 PM 0 comments
Tuesday, May 23, 2006
homemade toys
growing up, it seems upon reflection that the best toys were of the homebrew variety. Ok, dan's sumac shooting bbgun was good too, but i remember:
- the rubberband pea shooters with close pins
- shovels
- ropes
- nails
- needle darts
- bathrobe tie throws
- parachutes
- dirt-clod-in-a-bag throwies
- potatoe cannons
- air compressor darts made from range golf balls
- aluminum can launchers using a blackcat firecracker
- and rock at the end of a board catapults (going over the neighbors roof).
this remade bing bang bong game seems to fit the bill nicely.
additions by k2h
- golf ball w/ a tennis racket over the back fence
- gasoline bombs
- lye / tinfoil pressure bombs
- playing card houses
- forts made with computer frames and old doors
- shovels for underground additions to the fort
- the old car battery for LIGHTS in the fort
- tree house nailed directly to the tree
- ball-tag
- sling-shots, of the rope and leather patch variety
- a few renditions of homemade cross bows
- homeade throwing stars and spikes
- the battle-axe (where is that anyway?)
- kevs bike trailer for dumpster diving and trash days
Posted by forkev at 5/23/2006 10:09:00 AM 5 comments
Monday, May 22, 2006
second life
the game second life had a funny write over at wired.
it's worth a read.
Posted by forkev at 5/22/2006 08:55:00 PM 6 comments
MasterCard TOS
I got a little something in the mail today at work, a change in the terms of service for my corporate Mastercard account.
basically having to do with currency conversion rates, and that the rate may not be converted on the day of the transcation.
but the big one: a 1% fee will be charged for each transaction that you make in a country other than the Unites States WHETHER OR NOT THE TRANSACTION WAS IN FOREIGN CURRENCY.
Posted by k2h at 5/22/2006 08:30:00 AM 3 comments
Saturday, May 20, 2006
resist, V for victory.
"
Can you 'create' your own resistors? Sure thing, and not difficult. Here is how to do it: Draw a line on a piece of paper with a soft pencil, HB or 2HB will do fine. Make the line thick and about 2 inches (5cm) long. With your multimeter, measure the ohm's value of this line by putting a probe on each side of the line, make sure the probes are touching the carbon from the pencil. The value would probably be around the 800K to 1.5M depending on your thickness of the line and what type of pencil lead is used. If you double the line the resistance will drop considerably, if you erase some of it (length-wise obviously!) the resistance will increase. You can also use carbon with silicon glue and when it dries measure the resistance, or gypsum with carbon mixed, etc. The reason for mentioning these homebrew resistors is that this method was used in World War II to fix equipment when no spare parts were available. My father, who was with the Dutch resistance during WWII, at that time made repairs like this on many occasion.
"
link
Posted by forkev at 5/20/2006 02:01:00 PM 2 comments
Friday, May 19, 2006
buffalo
Dans new ride, the Buffalo armored vehicle according to the spec sheet it gets almost 5 miles per gallon, and it powered by a 450hp Mack Diesel.16" of ground clearance, and only weighs 45,000 lbs. read more at forcerotectioninc.com
Posted by k2h at 5/19/2006 10:25:00 PM 2 comments
Wednesday, May 17, 2006
how fast?
use SuperPI to calculate PI. its fun, and tells you how fast your computer is. mine did the 19 iterations to calculate pi to 1M digits in 1minute 4 seconds (intel 2.4ghz winXP). how fast are you guys running?
Posted by k2h at 5/17/2006 09:09:00 PM 3 comments
television house holds?
anyone want to venture a guesse as to how many 'TV' households there are in the US according to nielson?
no cheating
http://tv.yahoo.com/nielsen/
Posted by k2h at 5/17/2006 05:15:00 PM 0 comments
Recover data from a crashed hard drive by freezing it
I hadn't heard this before, but apparently you can eek a little more life out of a crashed drive by freezing it. I would have never thought to try this, but all the anecdotal evidence suggests it really works.
According to one of the comments:
The reason that this works, is that when a head crashes it gets off center and will hit the pin the harddrive. Freezing it compresses it, allowing it to gain a little room to move where it wouldn't before.
Posted by Sarah at 5/17/2006 01:04:00 AM 3 comments
Sunday, May 14, 2006
That's My Carbon
one way to ensure that nobody else, at least in the forseeable future, will use the carbon that made up you while you were you right before you died is to convert it to diamond. life gem will do this for you, or rather for posterity if anyone cares enough about you. currently they are promoting a diamond made from .beethoven's hair.
Posted by Unknown at 5/14/2006 02:52:00 PM 1 comments
Saturday, May 13, 2006
Friday, May 12, 2006
rubix cube
the rubix cube has a fancy algorithm to solve it in a fewer steps then i've ever needed.
Posted by forkev at 5/12/2006 10:15:00 AM 0 comments
Thursday, May 11, 2006
google store
I'm sure all of you knew about the google store and I know a certain someone that could really use a new pair of padded biker shorts.
superior comfort and long-lasting durability. They’re designed to be anatomically comfortable (no center seam, no waistband irritation
Posted by k2h at 5/11/2006 10:47:00 PM 0 comments
Liquid Cooling
want to move on to the next step in cooling your computer?
try water cooling
courtesy of my nerdy brother's web browsing
Posted by Unknown at 5/11/2006 12:11:00 PM 0 comments
google trends
google trends (more about it here) looks pretty snazy as it shows you how many hits certain search words are getting.
Posted by forkev at 5/11/2006 09:50:00 AM 1 comments
Wednesday, May 10, 2006
Hacking
a british hacker broke into some government computers (looking for evidence of ufo's, naturally) back in 2000-ish. he didn't actually get any classified info, just 'sensitive'. today he it was ruled that he should be extradited to the us. see stories 1, 2, 3, 4, 5.
gotta love the defense of its their own fault (and that he cites the movie 'war games' as inspiration). i have heard this defense from some members of this here blog saying that if people are stupid enough to leave doors open than we are free to walk through. but i have to say i don't think that is a good defense. i do think this guy should be punished, whether he intended harm or not, but not 70 yrs in prison. if you consider the 'they are stupid' defense as valid than what robbery would be considered illegal? you were stupid enough to use a safe in your bank that was susceptible to being opened by dynamite, it's your own fault for leaving the money available to be robbed. now that doesn't excuse the government for being stupid. i do think they deserve to have some egg on their face for that.
as an amusing side note: the spell checker in blogger doesn't know the word blog.
Posted by Unknown at 5/10/2006 04:00:00 PM 2 comments
Monday, May 08, 2006
gas prices
think you've found the best place to get gas? try local gas prices from MSN. just put your zip in and have a gander. similar to gasbudy... fun to play with
Posted by k2h at 5/08/2006 09:07:00 AM 2 comments