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Distance Education
Videoconferencing Techniques
Projects
1 . Observe and critique one 2-way video/2-way audio conference distance learning program, and one 1-way video/2-way audio satellite delivered distance learning program. Select sites from list provided by Cindy Hart.
Projects
2. Critique two computer mediated communication (CMC) education or training programs: 1 from CERC (as teacher) (Math or other) 1 from NASA (as student) (SENG)
Projects
2a. Alternate Project:
Find a Distance Learning platform, software, program like Tegrity and review it like a critique.
Projects
3. Working with a partner, prepare, conduct and video tape a 20 minute multimedia presentation in a distance education site of origin (405 Allen Hall or CERC). Select a topic of your choice. This will be a simulation of a satellite, videoconference or CMC distance education program.
Projects
4. Working with a partner, prepare: an actual home page and two/three pages of
content/instruction for a CMC course of your choice. Use FrontPage 98 (Allen 401 Lab), MS Word, or Web CT(if available).
Bill Duff, Jr.
Dance Poetry
Theme SongProgram Coordinator for Distance Learning
Develop and manage distance learning courses and work with multimedia and distance learning projects for the Lane Department of Computer Science and Electrical Engineering. Produce video for web and class applications, manage Electronic Classrooms
with distance learning classes, and delivery of live Internet classes and classes on demand. Oversee management of departmental web page. Manage uplinking facility at CERC/WVU. I also teach classes on Video Production for Training and Education and
Distance Learning for the College of Human Resources and Education.
Classes WVNET 2002 Presentation
"Wow! I'm Wacky, I'm Crazy, I'm absolutely Dazy!"
TE 601 Distance Learning Thursday 4-6:50 PM Allen Hall, Room 511
Syllabus
Course Announcements Related Links Virtual Class
List of Distance Sites (Excel) Critique Document
Directions for Visiting Classes Directions for watching the Tegrity classes
Tegrity Demo
Projects
5. Choose a. or b.: a. Create an infrastructure development plan for
an institution to improve their ability to use distance education/training. This must be based on an actual institution or facility.
OR b. Develop a proposal to design and produce a
teleconference for education/training (must be a series of 3 programs or more).
Videoconferencing
Preparation for videoconferencing Use bold, 14 point font or bigger Use landscape mode Use simple graphics Leave margin around page Wear colors, not white or stripes
Videoconferencing
Successful conferencing Distribute handouts beforehand Have info, phone #’s, connections Arrive early Transmission delay, respond accordingly Avoid papers, noise near mic’s Avoid side conversations At multipoint sites, mute mic when listening Wrap up time at end
Videoconferencing
Reasons to Use Conferencing access to resources for special-needs students. share resources (scattered or rural populations) deliver information on rapidly changing topics provide a virtual experience facilitate collaboration, information searching,
problem solving, and decision making
Videoconferencing
Advantages of Video Conferencing Establishes a connection between
participants Enables connection with external
resources Supports use of diverse media Document sharing facilitates
collaboration and feedback
Videoconferencing
Primary components: television cameras monitors microphones speakers communications network
Videoconferencing
communications network Coaxial cable Fiber optics ISDN T1 ATM IP Satellite DSL and Cable Modems
Videoconferencing
communications network Coaxial cable Used primarily between short distances
like court room and jail
Videoconferencing & CMC
communications networkFiber optics Used mainly as intranet like within a
university Consists of many strands of fiberglass
which conducts and can send large quantities of information
Videoconferencing & CMC
communications networkISDN Integrated Services Digital Network voice and data are carried by bearer
channels (B channels) bandwidth of 64 kb/s A data channel (D channel) = 16 kb/s H channel is 6 B channels = 384 kb/s
Videoconferencing & CMC
communications network ISDN
Basic Rate Interface (BRI) 2-B channels and 1-D = 144 kb/sPrimary Rate Interface (PRI) 23-B and 1-D = 1536 kb/s
ISDN telephone lines and codecs use the ITU H.320 standard
Internet (LAN/WAN) connections and codecs use the ITU H.323 standard
Videoconferencing & CMC
communications network T1 - high speed digital network (1.544 mbps)
developed by AT&T 64Kbps 1/24 of 1 Channel DS0T1 =1.544Mbps 24 Channels DS1 3.152 Mbps 2 T-1 48 Channels DS1CT2 = 6.312 Mbps 4 T-1 96 Channels DS2 T3 = 44.736 Mbps 28 T-1 672 Channels DS3 89.472 Mbps 56 T-1 1344 Channels DS3CT4 = 274.176 Mbps 168 T-1 4032 Channels DS4
Videoconferencing & CMC
communications networkATM - Asynchronous Transfer Mode Also known as cell relay Speeds - 2.5 Gb/s in operation, 10 Gb/s in limited use
and spanning up to 40 Gb/s in trials roughly 80 percent of the world's carriers use ATM
Videoconferencing & CMC
communications network IP
LAN – Local Area Networks WAN - Wide Area Networks MAN – Metropolitan Area Networks Allows point-to-point between computers or
codecs bandwidth of around 384-768kb/s is very
common Internet – bandwidth dependent
Videoconferencing & CMC
communications networkDSL and Cable Modems (Broadband
Services) DSL phone connections dedicated home
to provider's central office using copper wire
Residential ADSL - 1.5 Mbps http://www.videnet.gatech.edu/cookbook//
Videoconferencing & CMC
Characteristics of communications channels
A. Types of signals: digital and analog B. Transmission modes: asynchronous
and synchronous C. Direction of transmission: simplex,
half‑duplex, full duplex D. Transmission rate
Videoconferencing & CMC
Communications equipment A. Modems B. Multiplexors C. Front‑end processors D. Network interface cards
Videoconferencing & CMC
Wirelesshttp://wireless.ittoolbox.com/
default2.asp
References
http://members.cotse.com/fulcrum/net_ref.htm
http://www.anixter.com/
Videoconferencing
http://edweb.sdsu.edu/triton/july/conferencing/Comparison_of_Conferencing.html
http://www.kn.pacbell.com/wired/vidconf/
Videoconferencing
Conclusion Conferencing technologies enable real-time interaction of
students and teachers with experts, collaborators, and organizations all over the globe. Conferencing is often more convenient and less expensive than travel, and a wider audience can be reached. Education can truly become a classroom without walls. The major limiting factors are bandwidth, technical training, and equipment and software expenditure.
One last word of advice is to always keep in mind that conferencing takes careful planning and preparation. Guest appearances must be arranged ahead of time, equipment must be checked out, set up, and tested, and participants need to learn the basics of the technology and its use.
Distance Learning Develop and online class