development of web-based collaborative environment for distant learning
DESCRIPTION
Development of Web-based Collaborative Environment For Distant Learning. Supervised by Prof. Michael Lyu Presented by Ma Ka Po. Outline. 1. Communication Environment 2. Web-based Education 3. MWPS 4. Proposed Enhancement 5. Design Requirement 6. Proposed Architecture - PowerPoint PPT PresentationTRANSCRIPT
Development of Web-based Collaborative Environment For
Distant Learning
Supervised by Prof. Michael Lyu
Presented by Ma Ka Po
Outline
1. Communication Environment
2. Web-based Education
3. MWPS
4. Proposed Enhancement
5. Design Requirement
6. Proposed Architecture
7. Problem Encountered
8. Future Plan
9. Conclusions
Communication Environment
Face-to-face meeting Listening to other Sharing opinions Sharing paper works Brainstorming
Web-based Education
World Wide Web (WWW)
Bringing a new way to learn and teach
Allowing geographical distribution of teachers and students
Efficient delivering materials (both text and multimedia)
Control own learning pace
Advantages of WBE:
Easy update course materials
Available on demand
Flexible presentation format
MWPS
MWPS (cont’)
Construction
Editing
Management
Web-based presentation
HTML slides
Streaming audio and video
Synchronous Asynchronous
Delivery of lessons
Outlook of MWPS
Outlook of MWPS (cont’)
Outlook of MWPS (cont’)
Inadequate Feedback
Lecture students
Text, audio, video
Text
•Insensitivity to lack of interest, understanding
•Unable to alter the pace and contents
Teaching side
•Unable to view other’s response
•Inefficient to give feedback
Learning side
Proposed Enhancement
Adding multimedia conferencing feature
- allows multimedia information (text, graphics, animation, audio and video) generated, transmitted, and presented in real-time on-line environment on both lecturer and students sides
Develop collaborative environment in order to achieve efficient communication
Design Requirements
Create customized collaborative environment (user interface) with the appropriate access; Incorporate distributed multimedia functions; Exploit the state-of-the-art audio, video and network technologies; Enable open collaborative applications (sharing documents, images); Set of separate modules (audio, video, whiteboard, etc).
Layout of Synchronous mode of MWPS
Proposed Architecture of Collaborative Conferencing
RealEncoder
MWPSClientWeb
Browser
Lect
urer
/Pre
sent
er
RealPlayer
Multi-mediaContent
RealServer
MWPSServer
WebServerS
erve
r C
ompu
ter
MWPS/ClassContent
RealEncoder
MWPSClientWeb
Browser
Aud
ienc
e 1
RealPlayer
RealEncoder
MWPSClientWeb
Browser
Aud
ienc
e N
RealPlayer
.
.
.
Control flow
Data/InternetConnection
Problems encountered
Support for continuous media Dramatically increasing transferred materials over the limit of the bandwidth;
Real-time synchronization Difficult to maintain synchronous transmission manner;
Multiparty communications Lack of facilities to support for joining and leaving of groups at run-time;
Problems encountered (cont’)
Hardware supports Individual computing power may not support co-existing
real-encoder and real-player in the same time; Much more equipment are needed in students’ side;
Training for students Students with little experiences operating computer may
find difficulties to use the system, as a result, losing the studying interest.
Future Plan
Acceptable discarding frame policy should be introduced to minimize the demands on bandwidths;
Corresponding facilities need to be added;
Performance of synchronous should be addressed;
Related training programs for student should be well specified.
Conclusions
• Effective collaboration between the instructor/student and student/student are crucial
• Inefficient interaction exists in campus wide educational environment
• Factor determines the fate of future web-based education
• Adding the conferencing feature try to improve the communication flow
Lecture seems held on a virtual classroom over the network