cross-media technologies in education european workshop “emerging technologies in education”...
TRANSCRIPT
Cross-media Technologies Cross-media Technologies
in Educationin Education
European Workshop “Emerging Technologies in Education”June 20-21, 2003, Linz, Austria
Ioannis Kaptsis, Eleftherios Metaxoudis
[email protected], [email protected]
International Cooperations Dept.
AgendaAgenda
Emerging Educational Models and their objectivesEmerging Educational Models and their objectives Cross-Media Publishing in Learning EnvironmentCross-Media Publishing in Learning Environment Cross-Media Publishing IssuesCross-Media Publishing Issues Learning Content Flow Process & ComponentsLearning Content Flow Process & Components Cross-media content presentation & delivery Cross-media content presentation & delivery
(CONTESSA) presentation(CONTESSA) presentation Interactive educational platformInteractive educational platform (MENTOR) (MENTOR)
presentationpresentation ConclusionsConclusions
Models of distance Education-A Conceptual Framework Models of distance Education-A Conceptual Framework Characteristics of Delivery Technologies
Flexibility Advanced Interactive
Models of Distance Education and Associated Delivery Technologies
Time Place Pace Delivery
Institutional Variable
Costs Approaching
Zero
1st Generation -
The Correspondence Model Print
Yes
Yes
Yes
No
No
2nd Generation -
The Multi-media Model Print Audiotape Videotape Computer-based learning
(e.g. CML/CAL) Interactive video (disk and tape)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
No
No
No
No
No
3rd Generation -
The Telelearning Model Audio teleconferencing Videoconferencing Audio graphic Communication Broadcast TV/Radio and Audio
teleconferencing
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
No
No
No
4th Generation -
The Flexible Learning Model Interactive multimedia (IMM) Internet-based access to WWW
resources Computer mediated communication
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
5th Generation -
The Intelligent Flexible Learning Model Interactive multimedia (IMM) Internet-based access to WWW
resources Computer mediated communication,
using automated response systems.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Next Generation Learning Model Objectives Next Generation Learning Model Objectives
• Integrated learning services based specifically on reusable learning objects
• Development of reusable learning components
• Emphasize on personalised learning in collaborative enviroments
• Development of a suite of modular building blocks and tools on the basis of an underlying open infastructure supporting a wide range of flexible learning activities
• Development of enviroment that facilitate interaction, including social interaction, between learners and teachers
• Encompass all functionalities needed to develop, manage and deliver courses.
Design Requirements for Learning ContentDesign Requirements for Learning Content
Learning materials must be easily transferable to different target formats, including online presentations and printable text-oriented documents.
Learning material must be easily reused in a different context:
Independent from authoring tools and presentation applications
Should match the specific requirements of the target device (media independent)
Multimedia content must be adaptable to trainees’ needs and tool complexity.
Material should be shared with other authors.
Present granularity that allows integration into any type of grouping, sequence and navigation system.
Cross Media Publishing in Learning EnvironmentCross Media Publishing in Learning Environment Web-based learning material is unlikely to completely replace print
versions EElectronic material has to be considered as an additionallectronic material has to be considered as an additional
publication channel to be servedpublication channel to be served
Web is used as learning environment Educational material needs to be tailored in HTML formatEducational material needs to be tailored in HTML format
New Web-enabled devices e.g smart phones DTV sets, emerge as learning material delivery platformsStrong demand for cross-media publishing toolsStrong demand for cross-media publishing tools
Multiple publishing formats and variety of end-user devices require technology and supplier independent solutionsXML-based XML-based tools provide the necessary technology platformtools provide the necessary technology platform
TThe XML-based Learning Material Markup Languagehe XML-based Learning Material Markup Language (LMML)(LMML) provides the provides the appropriate markupappropriate markupss
for the structuring of learning contentfor the structuring of learning content
CCross-ross-MMedia edia FFunctionalitiesunctionalities e-Content management systems enable cross-media publishing from a single
document source
Through the cross-media production system (or generically) the content management system it is provided an integrated document management activity, workflow and content editing enviroment
The cross-media publishing process has been automated through the use of standard markup languages replacing intensive proprietary production ‘courseware’ systems
XML tagged ‘courseware’ documents are structured with consistent and comprehensive parameters making them able to be treated discretely from layout and presentation
The cross-media production system uses XSLT to simplify and fully automate the task of publishing educational content in multiple formats
The rendering engine is capable of automatically converting XML content into Post Script and PDF for print delivery, and into HTML for web delivery on demand
Cross-Media Cross-Media Publishing tools makePublishing tools make ‘‘coursewarecourseware’’ available available to students in a variety of delivery modes to students in a variety of delivery modes
(print, on(print, on--line) from a single document sourceline) from a single document source
However… Deploying learning content through multiple channels in traditional
terms entails the introduction of separate workflows for each channel.
Multiple workflows results into time-consuming re-authoring of the educational content and duplication of the content creation process
In terms of cost, increased complexity calls for separate tools and more coordination in order to avoid content inconsistencies.
Common XML editors are rather complex development environments and available tools still lack user-friendly interfaces that will enable the creation of educational content by the average user.
CCross-ross-MMedia edia IssuesIssues
An integrated cross-media solution that will allow content An integrated cross-media solution that will allow content creators to use the existing authoring tools is requiredcreators to use the existing authoring tools is required
TRANS
LATION
Learning Content
ManagementSystem(LCMS)
DELIVERY
PRESENTATION
AUTHORING
WORD
PPT
WML
XML
XML
HTML
SVG
cXML
DTV -API
Print format
XML
NativeFormat
COPE- Based Learning ContentCOPE- Based Learning Content Flow Process Flow Process
Basic Architectural ComponentsBasic Architectural Components
Authoring: Represents the traditional content creation environment that occasionally may include the “XML-translation” process.
LCMS: Provides the environment where developers can reuse, manage and store learning content to a central object repository. In addition, LCMS separates content from its presentation format.
Content Presentation: Transforms content presentation style sheet based on end-user device capabilities and learner’s profile data.
Request Broker: Facilitates the transfer of data between and among internal and external applications.
Content Delivery Networks: Manage the distribution of educational content and redirects rich media files (e.g. Flash animations) to local caches for time-efficient delivery.
Cross-media content presentation Cross-media content presentation & delivery& delivery
CONCONtent tent TTransformation ransformation EEngine ngine SSupporting Univerupporting UniverSSal al AAccessccess
((CONTESSACONTESSA))
http://contessa.intranet.gr
The CONTESSA approachThe CONTESSA approach
CONTESSA’sCONTESSA’splacementplacement
Content Creation
Automatic XML
Conversion
Data Collection
Content Distribution
Tuition Audio Files
Text & Graphics
Student Portals
Educational Video
XML
Transcoding
PCHTML
PDAcXML
WAP PhoneWML
PayphoneSVG
DTV-STB
DTV-API
IP PhoneXML
Text-to-Voice
vXMLCONTESSA’sCONTESSA’splacementplacement
Content Creation
Automatic XML
Conversion
Data Collection
Content Distribution
Tuition Audio Files
Text & Graphics
Student Portals
Educational Video
XML
Transcoding
PCHTML
PDAcXML
WAP PhoneWML
PayphoneSVG
DTV-STB
DTV-API
IP PhoneXML
Text-to-Voice
vXMLText-to-Voice
vXML
MANAGEMENT
Dynamic Service Creation
Content/Asset
Management
Digital Rights
Management
Authentication
Caching
PRESENTATION
Multi-channeldelivery
Profiling
Viewing/Browsing
Streaming
Payphone
WAP Phone
PC
PDA
DTV-STB
Applications offered by CONTESSA
Tuition AudioFiles
Educational Video
Text & Graphics
Student Portal
Multimedia Aggregation
Authoring
Scripting
Structuring
CREATION
IP Phone
MANAGEMENT
Dynamic Service Creation
Content/Asset
Management
Digital Rights
Management
Authentication
Caching
PRESENTATION
Multi-channeldelivery
Profiling
Viewing/Browsing
Streaming
Payphone
WAP Phone
PC
PDA
DTV-STB
Applications offered by CONTESSA
Tuition AudioFiles
Educational Video
Text & Graphics
Student Portal
Multimedia Aggregation
Authoring
Scripting
Structuring
CREATION
IP Phone
CONTESSA in the Content Delivery CycleCONTESSA in the Content Delivery Cycle
Contessa Server
RequestExecutionResults
Device-specificFormat
TranscodingModules
PhoneXML-to-HTML
XML-to-WML
XML-to-Voice
XML-to-iTV
XML-to-SVG
XML-to-Any Format
PC
Profiler UserProfiles
Profiling Engine
Parser
Device Identification &Request Translation
PDA
Service Definition byService Provider
ContentCollector
Content CollectionEngine
XML Producer
Results inXML Format
Local ContentStorage
DatabaseHandler
Clients Requests & Replies inDevice-Specific Format
Action Handler
Service Creator
ServiceDefinition Toolkit
Client Devices
Payphone
Transactions
TransactionManagement
Engine
ContentCollectors
...Content Providers
ContentCollector
...DTV- STB
WAP Phone
User Registration& Preferences
Contessa Server
RequestExecutionResults
Device-specificFormat
TranscodingModules
PhonePhoneXML-to-HTML
XML-to-WML
XML-to-Voice
XML-to-iTV
XML-to-SVG
XML-to-Any Format
PCPC
Profiler UserProfiles
Profiling Engine
Profiler UserProfiles
Profiling Engine
Parser
Device Identification &Request Translation
PDAPDA
Service Definition byService Provider
ContentCollector
Content CollectionEngine
XML Producer
Results inXML Format
Local ContentStorage
DatabaseHandler
Clients Requests & Replies inDevice-Specific Format
Action Handler
Service Creator
ServiceDefinition Toolkit
Client Devices
Payphone
Transactions
TransactionManagement
Engine
ContentCollectors
...Content Providers
ContentCollector
...DTV- STBDTV- STB
WAP PhoneWAP Phone
User Registration& Preferences
CONTESSA architectureCONTESSA architecture
CONTESSA offers an expandable & layered architecture that supports emerging types of access devices by incorporating additional transcoding modules.
Separates content collection from service definition and hides database complexities by using data exchange mechanisms based on the XML standard
Provides an advanced service definition toolkit that: Allows dynamic definition of service parameters taking into account the target
device Generates layout description in XSLT format
Emphasizes on iTV applications by developing a middleware component to enhance interactive multimedia content rendering on any type of java-based set-top-boxes.
Offers easy-to-use GUIs that facilitate the creation of personalized services.
Provides an interface to electronic transaction systems (e-commerce, e-banking, etc.) from multiple channels.
CONTESSA featuresCONTESSA features
Interactive educational platformInteractive educational platform
MMultimediaultimedia EnEnhancedhanced TTrainingraining
OOffered inffered in RReal time eal time ((MENTORMENTOR))
MENTORMENTOR basic descriptionbasic description
Mentor is an integrated training solution that enables any organization and corporation to continuously educate their personnel by providing fully interactive training sessions to widely dispersed user groups and communities.
It provides the tools and mechanisms that enable the text-based or voice-based communication between the trainer and the trainee in real time.
The transmission of multimedia-rich training content is based on the proven advanced transmission techniques of the Internet over Satellite (IoS) platform where advanced data transfer mechanisms ensure proper and reliable distribution of training material to all users.
Functionalities are given through friendly user interfaces, hiding the complexities of network communication, synchronization of activities and material presentation.
Satellite
Satellite Transmission
Video
LAN Workstationsw/MENTOR Student Application
Stand-alone Downlinkw/MENTOR Student Application
Satellite Reception
Satellite Reception
PSTN
Return Channel(Leased Line,VSAT,etc.)
Uplink LAN Server
Downlink LAN Server
MENTOR Teacher Application
Video Encoder
MENTOR architectureMENTOR architecture
MENTOR featuresMENTOR features
Includes additional tools for remote application sharing in the desktop of a moderator’s terminal (VNC) as well as the ability to support the display of PowerPoint slides.
The platform provides applications that enable the creation and review of teaching material, like drawings and charts, text files and HTML content, located either locally or on the Internet.
The application includes the tool for generating statistical reports able to observe the performance of the trainees and the efficiency of the sessions, making the application to be a reliable tool for supporting the decision-making process.
The instructor has total control over shared application usage and system resources and also has the ability to define user group’s rights, regulating their profiles respectively.
Offers manageable tools of asynchronous collaboration (e-mail, discussion forums) and multiple tools for synchronous content presentation (shared whiteboard, shared browser, public/private chat, e.t.c.) in all users.
MENTOR MENTOR CaseCase StudyStudy – A.I.T. – A.I.T.
Promotion of scientific research and broadening of education in the fields of Information Technology and Telecommunications (Information Society)
Enrichment of the Intracom Group human resources with technology, research and development oriented engineers
Collaboration with Carnegie-Mellon University in Pittsburgh, Pennsylvania
First enrolment class: September 2002
Promotion of scientific research and broadening of education in the fields of Information Technology and Telecommunications (Information Society)
Enrichment of the Intracom Group human resources with technology, research and development oriented engineers
Collaboration with Carnegie-Mellon University in Pittsburgh, Pennsylvania
First enrolment class: September 2002
www.ait.grwww.ait.gr
Summarizing...Summarizing... Learning models are evolving
Emerging learning models entail the use of reusable learning objects and emphasize on personalized learning and social interactions between learners and teachers
Learning tools evolve towards modular architecturesNext generation education tools will be based on modular building
blocks that will allow authors to create educational content once using their existing authoring tools and publish it on multiple channels
XML related tools and standards are maturingXML-based based languages (LMML) and tools represent the
appropriate technology framework for the structuring and design of educational content
LCMS are becoming and integral part of the educational content workflow
Future LCMS will take greater advantage of technologies such as XSLs to facilitate the integration of LCMS with other knowledge and information management tools within organizations
Future … Future …
Chat, Instant Messaging and Discussion Groups
e-Learning Portals
IP Telephony (VoIP) / SoftPhones
Content-on-Demand (VoD / AoD)
Content Delivery Networks (CDNs)
Key technologies that are expected to influence the distance-learning environment