1. Federal University of Rio Grande do Sul
Distributed Classes: Convergence of distance learning and presence learning through a videoconference system
Valter Roesler:
Luiz Coelho:
National Education and Research Network
Federal University of Rio Grande do Sul

2. Outline Overview of ESR (Superior Network School) Motivation
Educational approach
General view of the system
Video example
Other use cases

3. Overview of ESR (Superior Network School)

4. Unit example of ESR (Superior Network School)

5. Hands-on example during a class

6. Instructor and assistant

7. Methodology (theory + hands-on)

8. Course portfolio

10. Students distribution – group 1
Three states concentrate 40% of the potential students

11. Students distribution – group 2
Ten states concentrate 41% of the potential students

12. Students distribution – group 3
Fourteen states concentrate 18% of the potential students
It is difficult to find teachers in these states

13. Educational Approach

14. Educational approach
Recreates similar conditions of a synchronous class
Professor sees present and remote students
Present students see professor and presentation slides
Remote students also see professor and presentation slides

15. Educational Approach
Student questions are seen by everyone

16. Software is composed of three entities
Switcher
Presenter
Moderator

17. IVA Architecture
Multicast transmission allows an efficient use of bandwidth and high scalability (hundred of users)

24. Switcher example

25. Switcher example DF MT
4300 km RJ RS

26. Remote view
TEACHER PRESENTATION
TEACHER SIGNAL

27. Interaction among participants
STUDENT
SIGNAL
TEACHER SIGNAL

28. Local view

29. Control Center

30. Video Example

31. Solution cost Each telecentre will cost U$ 20,000 at most, including:
Computers, headsets and microfones
Robot cameras
Televisions with rack(s)
Smartboard
Each Remote Point will cost less than U$ 10,000, including:
Television with rack
Computers, camera, microfone, projector

32. Other use cases
Municipality Secretary of Health – Porto Alegre. More than obstetric ultrasonography attended to perform first medical opinion
Inmetro: National Institute of Metrology, Standardization and Industrial Quality. Connecting about 50 places

33. Ongoing work: transmission using different networks
Conventional network: OK
Satellite: OK
Cell phone: ongoing work
Digital TV: ongoing work
Adaptation to Unicast: ongoing work

34. Sponsors
RNP (National Research Network)
FINEP (Projects and studies financing)
SEBRAE (Support to small enterprises)

35. Distributed Classes: Convergence of distance learning and presence learning through a videoconference system
Thank You 
Questions??
Valter Roesler:
Luiz Coelho: