MultiRole Course – Design & Process

2004/11/18

徐天送

Outline

IMS LD Service MultiRole Course – Design & Process Conclusion

IMS LD Service

Send Mail Conference Index Searching

Service - Conference (details)

<participant> Can read (listen/see) the information, and can contribute to

the conference. <observer>

Have only reading rights; they may not contribute. <conference-manager>

Be allowed to create new sub conferences and delete conferences he created.

<moderator> Persons who have the right to control and change the

contributions of participants before they are made visible to other participants or observers.

Open Source – ChipChat - 1

Open Source – ChipChat - 2

Open Source – ChipChat - 3

MultiRole Course – Design & Process

LD Structure MultiRole Course Scenario Process Design

LD Structure – Act & Role-PartAct

Role-part Role-part

Activity-Structure

Learning-Activity

Role

Learning-Activity

Activity-Structure

Support-Activity

Support-Activity

Roleconcurrent

加減法課程

Service

MultiRole Course Scenario

John Mary

Role:Class A

Role:Class B

加法課程

加法 1

加法 2

Chat Room

減法課程

減法 1

減法 2

Chat Room

Chat Room

Complete

Messages

John MaryLoadCourse(role=classA)

courseIDLoadCourse(role=classB)

Select(role=classB, selectedID=LA_Sub1)

Select(role=classB, selectedID=LA_Sub2)

Select(role=classB, selectedID=S_Chat)

Select(role=classA, selectedID=LA_Add1)

Select(role=classA, selectedID=LA_Add2)

Select(role=classA, selectedID=S_Chat)

Complete(role=classB)

Complete(role=classB)

Complete(role=classB)

Complete(role=classA)

Complete(role=classA)

Complete(role=classA)

Break(role=classB)Break(role=classA)

Quit(role=classB)Quit(role=classA)

Process

Process Design - 1

Class A

Receive LoadCourse

Class B

Receive LoadCourse

Flow

減法加法

There is no constraint to specify that two role-parts have to be started at the same time.

Process

Process Design - 2

Class AReceive LoadCourse

Class BReceive LoadCourse

Flow

Class A Class B

Flow

減法加法

But this process make client wait for the reply message. Learner may confuse the views – it could be misunderstood as an error by learner.

Loading Mechanism

2. Tell the learner should wait for other participants

John

Mary

Process

1. Join Course

2. Reply

3. Check Course Ready

4. isReady = false

7. [isReady] LoadCourse

5. Join Course

6. Reply

Ready

3. The client periodically send message to process

3. Check Course Ready

4. isReady = true

Process

Process Design - 3

There are still some problems in this. At first, the flow activity merely has fixed number of sub-activities. It means that we don’t have multiple persons to match one Role-Part.

Class AReceive JoinCourse

Class BReceive JoinCourse

Flow

Flow

Set CourseReady=true

Class AReceive LoadCourse

Class BReceive LoadCourse

減法加法

Another ScenarioProcess

John

Kurt

Mary

A

B

A1

1. The Process have fixed number of sub-activities in the flow.2. The activity block A has the same context with A1.

Process Design – 4 (conceptual)

Main Process

John

Kurt

MaryA B

Sub Process

加法

(John)

Sub Process

加法

(Kurt)

Sub Process

減法

(Mary)

Main Process

Process Design – 4(detail)

Class AReceive JoinCourse

Class BReceive JoinCourse

Flow

Flow

Set CourseReady=true

Class AReceive LoadCourse

Class BReceive LoadCourse

Sub Process

加法Sub Process

減法

Reply Sub-Process BReply Sub-Process A

Async Invoke

Sequence Diagram:Client

join

:SubProcess

:MainProcess

load coursenew

load role-part

URLURL

select

URL

complete

Reply

Repeat

quitquit role-part

ReplyReply

Conclusion - 1

Completed acts are still left visible and accessible, but the interface should sharply distinguish them from the current act, and make it clear that they are only available for reference as part of the learner’s history.

Conclusion - 2

In runtime the time limit of the play overrules the time limit on act and that one on the role-parts.

When-role-part-completed

LMS Service Design

Testing

External Web Services

SupportedServices

Repository

LMSServices Domain

Model

Process Container

Process Instance

CourseSequencing

PresentationLogic

Client

MessageMapping

MessageSender

ViewBrowser

Message Sequence

LMS Behavior

Functional Test

Process Behavior