slide1
Download
Skip this Video
Download Presentation
Distributed, Collaborative Processing System (COBRA Virtual Office)

Loading in 2 Seconds...

play fullscreen
1 / 30

Distributed, Collaborative Processing System (COBRA Virtual Office) - PowerPoint PPT Presentation


  • 104 Views
  • Uploaded on

Distributed, Collaborative Processing System (COBRA Virtual Office). What's the Deal?. COBRA. Distributed, Collaborative Processing Systems –Some Prospects. E-Commerce B2B and B2C -Collaborative Product design -Collaborative Product decision. Group communication -Net meeting

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Distributed, Collaborative Processing System (COBRA Virtual Office)' - cedric-hicks


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1
Distributed, Collaborative

Processing System

(COBRA Virtual Office)

slide3
Distributed, Collaborative

Processing Systems –Some Prospects

E-Commerce

B2B and B2C

-Collaborative Product design

-Collaborative Product decision

Group communication

-Net meeting

-PDA, PCS etc

-Virtual class rooms

Software Engineering Environments

-Distributed Collaborative system design space

Personal entertainment

-On-line video games

slide4
Different Locations? Not a Problem Anymore!

One Design

Multiple users at different locations can work on one design collaboratively

and simultaneously.

No travel and no delay.

Higher Productivity,

Lower cost,

Better Traceablity.

slide5
COBRA= Collaborative behavioral Requirement and Architecture
  • FOR
  • Modeling requirements
  • Designing architecture
  • Evaluating existing architectures/components if
  • they can meet new requirements
  • Monitoring projects
slide6
The System Provides
  • Communication of Knowledge
  • Simulation
  • Project Management
  • Traceability
slide7
History of COBRA
  • Started in 1994 as a research prototype
  • Initial implementation in c/c++ and tc/tlk
  • Current implementation in Java
slide8
Main Challenges seen previously
  • Poor documentation of the system
  • Insufficient communication when projects
  • passed from semester to semester.
  • Poor communication among members resulting in integration problem
  • Reinventing the wheel due to poor code
  • comments.
slide9
Platform Independency

The system is implemented using Java/JavaBeans so as to enhance platform-independence, interoperability, composability (plug-and-play), and distributability.

slide10
System Applications

The system will be used to model the behavior of a variety of system types, including a mobile communication system.

Hence, we will be using a particular scenario for the particular system chosen to be modeled.

slide12
Cobra Virtual Office Functionalities
  • Constructing Augmented Petri-Net (FSM) for System Behavior Modeling
  • Constructing PERT Chart for Project Scheduling and management
slide13
Constructing Augmented Petri-Net

As a test-bed, we are working on the modeling and analysis of system behavior using Augmented Petri Net (APN), a formalism which is expressively more powerful than Finite State Machines.

slide14
More about Augmented Petri-Net

A form of FSMs, first proposed by C. A. Petri in 1962

A notation for defining abstract concurrent processes

Primitives:

Place

Transition

Token

T

When all input places of a transition are enabled (i.e., with a token) and the external stimulus associated with the transition occurs, the tokens move from the input places to output places

slide15
T1

T2

Concurrency

T2

T1

T3

Synchronization

T1

T3

Fundamental notions:

Sequencing

T2

slide16
ONTARIO

Site

TEXAS Site

NORTH CAROLINA

Site

slide19
Collaborative Processing

(view from North Carolina)

Public Window

NC Window

slide20
Simulation

The system’s simulation functionality represent the behavior of Petri-net

slide22
Another Aspect of the Virtual Office

Monitoring and Scheduling Projects

Using PERT Chart

slide23
If you are a project manager,

do you prefer these, or...

slide24
This simple solution

Provided by Virtual Office

slide25
Why Do We Need PERT Chart
  • Allows users to express time dependencies for project tasks
  • Analyze the project critical path
  • Tracks project progress to ensure that delay is recognized
  • Provides a road map for a project manager
how to represent a pert chart in this system
How to Represent a PERT Chart in This System
  • The COBRAVirtual Office has functionality of constructing Augmented Petri-Net (APN), and allows system behavior simulation
  • Traditional PERT Chart representation lacks dynamic functionality to monitor project progress
  • A mapping from PERT chart to Augmented Perti-Net is proposed for the ease of project progress simulation
slide27
Programming

Test Code

Test System

2

4

8

10

Create Schedule

20

20

10

10

Training

User Test

1

7

9

11

Write Man

5

5

10

15

Buy Hardware

15

3

5

5

Installation

Conversion

6

An Example

  • Numbered rectangles are nodes that represent events or milestones
  • Directional arrows represent tasks that must be completed sequentially
  • Diverging arrow directions indicate possibly concurrent tasks
  • Dotted lines indicate dependent tasks that do not require resources

Figure 1: PERT Chart

Representation

slide28
@now>=t0+9 ۸ ~done /reminder

@now>=t0+18 ۸ ~done /reminder

@now>=t0+18 ۸ ~done /reminder

@now>=t0+9 ۸ ~done /reminder

1

2

4

8

10

Code test done

Schedule done

Programming done

system test done

@now>=t0+13 ۸ ~done /reminder

@now>=t0+4۸ ~done /reminder

@now>=t0+4 ۸ ~done /reminder

@now>=t0+13 ۸ ~done /reminder

5

7

@now>=t0+9 ۸ ~done /reminder

Hardware bought

man done

Training done

1’

3

9

11

@now>=t0+4 ۸ ~done /reminder

Installation done

User test done

5’

6

conversion done

Figure 2: APN

Representation

An Example (Cont’)

  • Numbered rectangles are nodes that represent states of a project
  • Directional arrows represent moving from one state to another
  • Vertical bars represent transitions from one state to another
ad