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June 29, 2006

PhD

I was taking abuse about an existence proof of my PhD Thesis the other day so here it is: http://www.dial911anddie.com/PhD/CullenJenningsPhDThesis.pdf

And the proposal for it is at: http://www.dial911anddie.com/PhD/CullenJenningsPhDProposal.pdf

April 07, 2006

Dan explains SRTP keying while I drink coffee

http://www.blueboxpodcast.com/2006/04/blue_box_podcas.html

Dan's slides are at:

http://www3.ietf.org/proceedings/06mar/slides/raiarea-1/sld1.htm

or

http://www3.ietf.org/proceedings/06mar/slides/raiarea-1/raiarea-1.ppt

November 03, 2005

UBC Award

Outstanding Young Alumnus Award - UBC Alumni Association

September 01, 2005

Latest release of lib SRTP is out

See http://sourceforge.net/projects/srtp

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July 19, 2005

For my P2P SIP stuff, go to www.p2psip.org

www.p2psip.org is now the top hit in google

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December 01, 2004

How good is your basic probability theory?

Many people think they are pretty good at basic statistics and probability theory. So give this one some thought ...

Imagine there are two drugs, A and B, that might help cure a problem you have and you are given the following information. 1100 people took drug A and it helped 505 of them. And 1100 people took drug B and it helped 195 of them. I put this in the table below along with the percentage of people where each drug was a success. Assume you can't take both drugs and that neither drug has any ill effect, risk, or cost from taking it.

Drug | Successful | Failed   | percentage success
A    |    505     |     595  |   46%
B    |    195     |     905  |   18%

Which drug would you choose to take given this information?

Now let me provide a little extra information. In the study above, it turns out that for drug A, there were 100 males and it worked for 5 of them and for drug B there were 1000 males and it worked for 100 of them. From this information, and a little subtraction, I have filled out the two tables below.

For males
Drug | Successful  |  Failed   | percentage success
A    |      5      |      95   |   5%
B    |    100      |     900   |  10%

For females
Drug | Successful |   Failed   | percentage success
A    |    500     |     500    |   50%
B    |     95     |       5    |   95%

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November 30, 2004

Mobile phones kill early media? One can only hope

I love the mobile phones guys - first they trained users that lousy voice quality really was OK. Then they got people to understand that when they were done pressing all the digits in a phone number, they had to press some some other send key before anything would happen.


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November 24, 2004

Photos from ReSiprocate Nov 04 coding session

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November 06, 2004

Clean up photographs of text documents in PhotoShop

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October 30, 2004

Why DRM will never work over an extended period of time


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October 09, 2004

The mastermind behind IPv6

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