From Last Week'

1
From Last Week.

• Definition of Distance Education
• Theoretical Development in Distance Education
• Millennial Restructuralism
• Incremental Reformism
• Change and Restructuring

2
From Last Week

• Levels of Course Webness
• Media Richness.
• Affordances Predictability
• Questions About Distance Education
• Equipment for DL and cost

3
TE 601 Distance Education

• Distance Education Media
• Overview of typical communication information
  systems in education and infrastructure
  development

4
TE 601 Distance Education

• Distance Education Media
• Overview of typical communication information
  systems in education and infrastructure
  development

5
Objectives

• Distance Education Media and Infrastructure
• What do you want to learn under this topic?
• What do we need to know?
• Your career (career goal), your knowledge and
  skills?
• Industry
• Academia

6
Evolution of Distance Education Media

• Print
• Broadcast television and radio
• Cable television
• Interactive instructional television

7
Evolution of Distance Education Media

• Print
• Broadcast television and radio
• Cable television
• Interactive instructional television

8
Evolution of Distance Education Media cont

• Recorded audio and video media
• Audiographic conferencing
• Video conferencing or Teleconferencing

9
Evolution of Distance Education Media cont

• Compressed Video Teleconferencing
• Full-Motion Video Teleconferencing
• Desktop Video Teleconferencing
• Integrated Services Digital Network (ISDN)
• DSL
• Fiber Optics

10
Distance Education Media- from correspondence to
collaborative learning

• The correspondence model emphasized learner
  independence
• paper based
• Videotapes or DVD
• BROADCASTING
• Interaction in form of correspondence of
  self-assessment exercises and instructor feed
  back
• TODAY learner autonomy should include
  interdependence.

11
Today's - media

• Synchronous, Asynchronous feature of CMC
• Digital communications and the convergence of
  telecommunication technologies

12
Current Technology for Distance Education 1)
Computers and Learning

• Laptop computers
• Personal Digital Assistants (PDAs)
• DVD
• Course Management Tools
• (Cellular Phone - Korea)

13
Current Technology for Distance Education 2)
Computer Mediated Communication (CMC)

• Electronic Networks
• Wireless Networks
• Computer conferencing
• Virtual Reality
• WV Virtual Environments Lab
• (http//wvvel.csee.wvu.edu)

14
Moore, M. G., Kearsley, G. (1996). Distance
education A systems view. Belmont, CA
Wadsworth.
Moore Kearsley, 1996
15
Model of a Comm Info Systems Infrastructure
16
TE 601 Distance Education

• 3 Major System Transfer Modes?
• Satellite
• CMC (WWW)
• Videoconference

17
TE 601 Distance Education-Satellite

• System Transfer Modes
• Satellite
• 1. Geostationary orbit
• 35,785 km from the center of the Earth
• Covers 1/3 of the Earth
• http//www.geo-orbit.org/

18
TE 601 Distance Education-Satellite

• System Transfer Modes
• Satellite
• 2. Satellite delivery
• a.      C-Band 3700-4200 MHz
  EDNET-Institute, WV
• b. Ku-Band 11700-12200 MHz CERC, WVU
      
• c. L Band 950-1450 MHz
• Chart- http//history.acusd.edu/gen/recording/spec
  trum.html

19
TE 601 Distance Education-Satellite

• System Transfer Modes
• Satellite
• Many satellite-based providers
• High quality picture and sound
• Cost effective
• Intradistrict network support
• Geographical coverage in rural areas

20
Disadvantages of Telecommunications satellites

• subject to regulation by the FCC
• Only a hand full of organizations in the world
  operating rocket facilities that can perform to
  lift a satellite into orbit.
• Rocket misfire and blow up
• Redundancy is required for built in repetition
  of signals
• Atmospheric disturbances, raindrops and
  snowflakes can create static

21
Disadvantages of Telecommunications satellites

• New competition optical fiber lines (networks)
• Flexibility, lower cost
• Have diverted much of the long-distance telephone
  business from satellites
• Competition benefit us the development of more
  flexible satellite services

22
TE 601 Distance Education - CMC

• System Transfer Modes
• CMC
• Uses Internet - WAN, LAN, ISDN, cable, ATM, SMDS,
  DSL, Fiber
• Wireless

23
Integrated Services Digital Network (ISDN).

• ISDN is an international telecommunications
  standard that offers a future worldwide network
  capable of transmitting voice, data, video, and
  graphics in digital form over standard telephone
  or fiber optic cable.
• ISDN transmits media using digital rather than
  analog signals.

24
TE 601 Distance Education- Internet

• System Transfer Modes
• Internet
• Access to libraries
• Collaboration - ftp, email, (Frontpage)
• Link between home and school

25
Videoconferencing

• Videoconferencing technology allows people at two
  or more locations to see and hear each other at
  the same time.
• http//www.vtel.com/
• http//www.polycom.com/home/
• http//www.phones4less.co.uk