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Tech Talk Radio Highlights
This week Tech Talk reviewed 802.11 wireless
technology, Internet plagiarism detection tools, new
developments in Internet song buying, MP3 players &
digital cameras, stupid idea of the week, our new Tech
Talk discussion forum, and much more.....
Listen now to the latest show in MP3 format.
Check out all the links
referenced during the show.
Tech Talk airs each Saturday at 8 am on
WJFK Radio (FM106.7) and is sponsored by Stratford
University. WJFK is a CBS affiliate and the number one
FM radio station in the Washington, DC market.
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| 802.11 Wireless Technology | | | The IEEE 802.11 committee has been tasked with
developing wireless networking standards that operate
in the 2.4 and 5 GHz unlicensed bands authorized by
the
FCC.
- 802.11a operates in the 5 GHz band and has a
theoretical transmission rate of 54 Mbps. It has eight
non-overlapping channels and a range of around 100
feet.
- 802.11b operates in the 2.4 GHz band and has a
theoretical transmission rate of 11 Mbps. It has three
non-overlapping channels and a range of around 150
feet.
- 802.11g operates in the 2.4 GHz band and has a
theoretical transmission rate of 54 Mbps. It has three
non-overlapping channels and a range of around 150
feet. 802.11g is compatible with 802.11b and will
probably prevail in the race for dominance.
Check out
the Wi-Fi Alliance Website
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| Teachers Can Detect Internet Plagiarism | | | Too many students have learned to cut and paste,
rather than create. The distinction between copying
and creating original content has been blurred.
Plagiarism is rampant in high school, college, and
grad school.
Now teachers are fighting back! They are using a plagiarism
detection tool from Turnitin.com,
a website founded by John Barry when he was a PhD grading
papers. This tool turns essays into strings of numbers that
can be compared with other texts. It is licensed to schools
for around 60 cents per year per student. Two hundred schools
in MD, VA, and DC currently use the service.
Check
out the Washington Post Article
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| Stupid Idea of the Week | | | A Los Angeles procurement official has asked
manufacturers to stop using the terms "master"
and "slave" on computer equipment. This ruling affects
all hard drives where the term applies to primary
and secondary hard drives. It also affects networks
that collect information via polling. The request was
made by Joe Sanoval, Division Manager of Purchasing
and Contract Services. His directive said, "Based on the
cultural diversity and sensitivity of Los Angeles County,
this is not an acceptable identification label."
Check
out the CNN Article
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| MP3 Player Rundown | | | MP3 players are designed to play songs that have been
saved using the MP3 format. A typical song, sampled at
128 kbps, is 3MB. Players use three forms of memory--
Flash memory, Mini-hard drives, and CDs.
- Smaller (cheaper) units use flash memory. 128 MB
of memory can hold around 40 songs; 256MB can hold
80 songs.
- Larger (more expensive) units use mini-hard
drives. Last year's models were 10 GB and would hold
around 2,500 songs. This year's models are either 20GB
or 40GM. The 40GB disk would hold around 10,000
songs.
- If you don't mind the size, a CD MP3 player may
be a good choice. CDs hold around 640 MB (200 songs).
The three most popular devices with mini-hard drives
are the Apple iPod, Creative Lab Nomad Zen, and
Archos Multimedia. Last year's models with 10GB hard
drives are the best value.
Check
out the Portable-mp3.org Site
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| Tech Talk's Discussion and Live Chat Forum | | | We now have a forum dedicated to Tech Talk
listeners. It includes both live chat and threaded
discussion areas.
- The live chat area includes two forums: Tech
Talk Live and Tech Talk Support. Listeners
should join Tech Talk Live between 8 and 9 am
EST each Saturday morning to comment on show
topics and guests. We will be reading and responding to
comments throughout the show.
- The Threaded Discussion area is grouped
into six areas: General Interest, Computers,
Networking, Security, Digital Devices, and Career
Advice. We will check in throughout the week to
answer discussion questions.
Join
the Forum Now!
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