Feb 262012
 

Activity 30

Watch the first section of the film (Video 2), which gives you some information about the telepresence system itself. Then answer the following questions.

  1. What makes telepresence different from standard videoconferencing?
  2. What sort of things did Cisco take into consideration to make telepresence work well?
Transcript of Video 2 Telepresence at Cisco: section 1
  1. The telepresence technologies go to great length to eliminate the presence of the technologies being used to enable toe conference. Whilst with things like Skype or Windows Live messenger you have a chat window where you are very aware that you are using a computer and software to talk, there are no chat windows or options menus on the Cisco screens, all you see is the people with whom you are talking.
  2. The Cisco system goes as far as to get the decor and lighting in the teleconference linked rooms as similar as possible. On top of this they use high-definition video, realistic sound reproduction, and carefully placed cameras to ensure that the appearance of the people on the screens is as realistic as possible, allowing you to actually look into someones eyes via the teleconference system.

Activity 31

Watch the second section of the film (Video 3), which discusses and demonstrates some of the uses of telepresence. Then answer the following questions.

  1. What are the advantages of telepresence?
  2. What sort of applications can benefit from telepresence?
Transcript of Video 3 Telepresence at Cisco: section 2
  1. Telepresence technologies can save a lot of time and money in travel costs, and boost the ‘green’ credentials of a company that uses it extensively. As long as the infrastructure is in place to make sure the high quality audio and video to be sent both ways the telepresence system is considered just as good as a real-life conference.
  2. Telepresence technologies can be used for auditions, medical, conferencing, collaboration and educational purposes.

Activity 32

Watch the final section of the film (Video 4), in which the interviewers draw their conclusions about telepresence. Then answer the following questions.

  1. What are the technical requirements for telepresence?
  2. Do you think telepresence systems might be used in people’s homes in the near future?
Transcript of Video 4 Telepresence at Cisco: section 3
  1. Telepresence requires a large-bandwidth ( 5 MBps per screen ) network connection for high-resolution and refresh rate images to be sent both ways, a reduction in audio and / or video quality reduces the perceived quality of the conference.
  2. Given the increasing availability of bandwidth for consumer internet connections I believe that int he future the appeal of personal conferencing technologies will increase, but for now, ‘joe public’ will be more than content with facilities such as Skype and Windows Live messenger.

 

 

Feb 112012
 

Read John Naughton’s review of Twitter from May 2010: http://www.guardian.co.uk/ technology/ 2010/ may/ 09/ john-naughton-twitter-microsoft-research. As you read through the article, make brief notes on the two main features of Twitter that make it different from other forms of social networking. Does this article help to reinforce the ‘six degrees of separation’ theme that was introduced earlier?

Twitter diverges from typical social networks in a couple of main ways:

  1. because all the shared posts are one way communications, you do not need to screen, or even be aware, of the people who subscribe to your feed.
  2. Re-tweeting allows interesting / important news to be circulated quickly and efficiently.

 

Jan 062012
 

Activity 21

I would now like you to listen to Audio 1. This is an extract from a BBC Radio 4 recording in which a new shopping centre is being reviewed. You will hear Ben Taylor and Mike Paterson being interviewed regarding some new technologies that have been adopted at the shopping centre.

Several technological applications are mentioned in the recording. Briefly describe those applications that you can deduce involve wireless everyware devices.

Link to audio transcript.

The most interesting application is bluecasting, where the shop scans for smart devices and send the shoppers information on sales items whilst they are in the shop.

The valet parking system is also an everyware technology. The driver exchanges their car-keys for a Wi-Fi tag, when the driver is ready to leave, they press a button on the tag, alerting the valet service to get the drivers car ready, and to get their shopping from the store delivered to their car before they leave.

Activity 22

State one potential benefit and one potential drawback of bluecasting, as described in Audio 1, for a shopper at a shopping centre (you do not need to listen to the audio again – just think through the issues yourself).

Bluecasting messages are not targeted, anyone with Bluetooth on will receive whatever the store decides to put in its bluecast messages, so kids might get news about car-cleaning stuff, men may be informed that stockings and apricot-scrub shower gel are 2-for-1.  Someone with their bluetooth left on may not want to receive these messages.