Archive for the ‘Technical’ Category

Spring snow storms

Posted in Technicalon Apr 16, 2009

I’ve had a couple of people ask my why there seems to be a greater snowfall in Colorado during March and early April than during the heart of the Winter in December and January. Fort Collins receives an average of 12.4 inches of snow in March, compared to only 7.1 inches in December.

Warm air can hold more water than cold air. Anyone who has experienced a hot and muggy day knows this. Also, warmer temperatures are more likely to evaporate more water into the air.

Snow requires cold air, so that the moisture that comes out of clouds is frozen instead of just rain.

The most snow fall comes when warm moist air with lots of water combines with cold frozen air that causes snow. This is most likely to occur during early spring months. During winter, the air is too cold on average to hold lots of water, and during summer, the air is too warm to cause it to snow. In the spring months in between, there are just the right amounts of both to make it snow more.

March 27, 2009. NASA image courtesy MODIS Rapid Response Team

March 27, 2009. NASA image courtesy MODIS Rapid Response Team

The follow up question asks why it doesn’t rain more in the summer if warm air holds more water. Much of the warmer air is warm enough to hold onto the water causing it not to rain. If, however, the air is cooled, then water can fall out of those warm clouds as rain, just like squeezing a sponge.

DTV conversion screw up

Posted in Technicalon Feb 17, 2009

In case you haven’t heard, broadcast television stations are converting from analog to digital signals. This means that those people who use an antenna to receive free television signals will need a setup capable of receiving the new digital signals. Many newer TV can receive DTV (digital TV), while older TVs like mine will need a converter box.

This conversion has been in plans for year and years, but many consumers aren’t ready for the old analog signals to be discontinued. Originally, there were plans for all analog signals to cease on February 17th, but since so many consumers were unprepared for the switch, congress decided that the plan was screwed up and they decided to do what congress does best, screw it up even more.

Congress voted to extend the conversion date until June 17th, but the problem is that they gave the TV stations the option of turning off the analog equipment anytime between now and then. So rather than having one established date for the conversion, some TV stations will turn off today, others later, and others on June 17th. This wasn’t communicated well to consumers, many of whom might be surprised when some of their TV stations switch today rather than the “extended” June 17 date.

There are 491 stations which will go digital-only on June 17, including a few PBS stations in the Denver area. A full list in PDF form is available.

An additional problem is that a government program to provide $40 coupons for purchases of converter boxes has run out of money, and although congress allowed some stations to extend their conversion date, they didn’t provide additional coupon funding as part of their analog expiration extension plan.

My Medion TV and DVDI have a Medion TV/DVD combo that I picked up at some black Friday sale a number of years ago.  It has been an OK TV, well used, with a few little quirks.

With the Digital TV conversion happening soon, I purchased an RCA DTV converter box and hooked it up to my Medion TV.  The problem is that the converter box came with its own remote and my TV wasn’t listed in its list of universal remote codes.

The universal remote codes in the converter manual were all three digits long, so I started putting codes into the remote starting with 001.  I eventually found a code that works sufficiently good; it works for the volume controls and the TV power button.

The code is 191.  It really only took me 20-30 minutes to get up that high, which especially wasn’t that bad because I was watching TV at the same time.  I’m just glad that it didn’t turn out to be a higher numbered code.

Flickr Stock Photo

Flickr Stock Photo

Occasionally I get asked how much a particular used computer is worth.  Because computer technology continues to increase at a steady rate, computers loose their value quite quickly.

My general rule is that a computer looses about 30-50% of its value every year.  A computer which was purchased at the store for $1000 might be worth somewhere around $300 two years later.  Particular brands and technologies may loose value faster or slower, but generally, all computers loose their value quite quickly.

For this reason I recommend that no one ever buy a computer with the intent to sell it to someone else later.

I also recommend to most people that they do not buy more computer than they need right now.  This means that you shouldn’t buy excessively more memory, speed, or storage because you intend on needing that extra capacity in a year or two.  Ignoring this advice, people could buy too much computer that would be worth half as much when they actually need to use it all.

(photo credit)

GDocsUploader 1.3 released

Posted in Technicalon Dec 17, 2008

About a year ago I started a little programming project to upload documents to Google Docs.  I wrote a little program for Apple OS X called GDocsUploader to support drag-and-drop uploading of documents, spreadsheets, presentations, and photos.

Today I released an updated version of the program.  In addition to bug fixes, this new version supports video uploads to Picasa.  Additionally, this new version makes it much easier to upload multiple files at the same time.

You can download the new version from the Google Code project site.
Read the rest of this entry »

BYU’s supercomputer is too slow

Posted in Technicalon Nov 18, 2008

Twice a year a list of the top 500 supercomputers is released.  BYU’s supercomputer, named Marylou4, was once ranked as high as 45 on the list.  As of last June, Marylou4 fell in rank to 274.

The most recent listing doesn’t even include a BYU supercomputer.  Marylou4 is too slow to make the list. 

So there you have it: BYU no longer has a top-500 supercomputer.

Last June, Google and Yahoo announced a partnership where Yahoo would use Google Advertising on its site to increase revenue.  Yahoo would raise some much needed cash from the more effective advertising, while Google publishes its ads on a very large site.  Currently Yahoo uses its own advertising framework which is less effective.

However, today we learn that the deal is going bust because too many government regulators and advertisors had concerns that this agreement would give Google too much of an advertising monopoly. Read the rest of this entry »


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