Friday, November 30, 2007

11-17-2007 Homework

Understanding mobile phone requirements for young adults with cognitive disabilities
Melissa Dawe
Pages: 179 - 186
Full text available: pdf formatPdf(251 KB)

Widespread hope for families with cognitive disabilities- Mobile phone.

it increase
  • safety
  • independence
  • social connectedness
special design is needed for special people.

Observing Sara: a case study of a blind person's interactions with technology
Kristen Shinohara, Josh Tenenberg
Pages: 171 - 178
Full text available: pdf formatPdf(286 KB)

Researchers, who are interested in the assistive technology, may observe the the user firstly.
Close look of how their true life. Something the users really want to have. The user show the way they use the technology and adjust the usage of the normal people will do.


Using participatory activities with seniors to critique, build, and evaluate mobile phones
Michael Massimi, Ronald M. Baecker, Michael Wu
Pages: 155 - 162
Full text available: pdf formatPdf(2.12 MB)

When the population of the senior increased, the design of the mobile device is also important. From my knowledge, the elderly people cannot use all the function of the cell phone that design for young people. The keypad, words in screen are too small for them.

Saturday, November 17, 2007

class note

CSMA

Light
-interference
-noise immunity

idle <-->collission

contention base
schedule

CSMA/CD 802.3 circuit complexity
CSMA/CA 802.11