Archive for December, 2004

Free Language Dictionaries

Thursday, December 9th, 2004

Can you tell I’m avoiding work this morning so far? :-)

Free english to ?? translation records may be found here:

All Free Dictionaries project : More than 90 free dictionaries.

Offline language tool for free that is capable of reading the translation files above.

Stardict

Maybe I’ll use the English/Spanish version to talk to my niece this Christmas.

wiki wiki, who’s got the wiki

Thursday, December 9th, 2004

The topic of wikis has come up repeatedly around work the last couple weeks as possible grant/research opportunities as it relates on online education. My sense is that a lot of work has already been happening in this area, but it was interesting to find some growing alternatives and different plays on the wiki theme.

The Wikimedia Foundation has a lot of projects that are expanding on the idea. One of the more interesting, from my perspective, is the Wikimedia Commons project.

Weather Proof Enclosure

Thursday, December 9th, 2004

This Compact Weather-Proof Enclosure looks pretty good for housing one of the access points, but I can’t help but think that I could do just as well by using an ordinary outdoor electrical panel type box. I haven’t checked to see what the cost of one of those is. And admittedly I’m running out of time since I need to have something figured out before next weekend when I do the installation.

Calculating Bandwidth with Ping

Thursday, December 9th, 2004

This is kind of interesting. I was trying to figure out if it made sense to determine available bandwidth based on the response time of ordinary ping requests. Why I’m asking is that I have some ‘data’ from a few tests I did with a wireless link that I’m trying to establish.

How a Slow Link Is Detected for Processing User Profiles and Group Policy

link speed=16000/(average ping for 2048 byte packet)
For example, a 32 ms average round trip time would be considered equivalent to a 500kbit link speed. The following ping command can be used to estimate link speed:
C:\>ping -l 2048 remote-domain-controller.domain.tld
Pinging remote-domain-controller.domain.tld [192.168.0.1] with 2048 bytes of data:
Reply from 192.168.0.1: bytes=2048 time=179ms TTL=57
Reply from 192.168.0.1: bytes=2048 time=180ms TTL=57
Reply from 192.168.0.1: bytes=2048 time=179ms TTL=57
Reply from 192.168.0.1: bytes=2048 time=187ms TTL=57
Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 179ms, Maximum = 187ms, Average = 181ms

The estimated link speed would be 16000/181=88 kbps.

If valid, going off of this the links looking pretty good.

Kismet on WRT54G

Thursday, December 2nd, 2004

I don’t know why I never thought of this before. Kismet on the Linksys WRT54G - Rasmus’ Toys Page