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High Level Architecture. Simulation Assisted Learning Using HLA and ADL. COL Mike Finnern Director, Defense Modeling and Simulation Office 703 998 0660. The Vision. High Level Architecture. Technically Feasible?. N. Y.

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simulation assisted learning using hla and adl

High Level Architecture

Simulation Assisted Learning Using HLA and ADL

COL Mike Finnern

Director, Defense Modeling and Simulation Office

703 998 0660

the vision
The Vision

High Level Architecture

Technically

Feasible?

N

Y

Integrate existing HLA-compliant simulations with ADL-compliant web-based instructional content to provide the student with a richer learning environment; one in which active interaction with simulations supports the proven instructional paradigm of “learning followed by doing.”

OperationalValue?

N

Y

the broad deployment vision
The Broad Deployment Vision
  • The warfighter can get simulation-enriched instruction anywhere there is access to a web browser (including local platform)
  • The location of the simulation and instructional content, whether local or remote, is transparent to the student
  • A legacy or newly developed simulation may be made available without moving its dedicated hardware or trying to create a new installation on potentially rare hardware, both very expensive propositions
  • The use of open standards preserves DoD’s investment in simulations, learning content, and tools, and protects stakeholders from the risks of proprietary solutions
  • Simulations and training will be as up to date as possible (owner dependent) when delivered to the student
hla adl in more detail
HLA (www.dmso.mil)

IEEE 1516 Series

Defines

Structure of data to be shared (OMT)

Set of requirements for interacting with the Federation (RTI)

Data exchanges are frequent, and usually small

Tightly coupled framework

ADL (www.adlnet.org)

IEEE 1484 Series

Defines

Structure of Web-based course content (DTD)

Set of requirements for delivery mechanism (LMS)

Data exchanges are infrequent, size varies by instructional design

Designed for web delivery

HLA & ADL in more detail…

OMT – Object Model Template

RTI – RunTime Infrastructure

DTD – Document Type Definitions

LMS – Learning Management Systems

dmso hla adl project requirements
DMSO HLA-ADL ProjectRequirements
  • Use available open standards and products built to them
    • Eliminate ties to expensive, risky proprietary solutions
  • Minimize impact on the existing HLA and ADL standards
    • Leverage existing expert communities to modify standards as necessary
      • IEEE SISC, LTSC – sponsor committees of IEEE Computer Society
      • ADL Co-Labs – Orlando, and Alexandria
  • Use appropriate security mechanisms with minimum configuration modifications
    • Must work with firewalls and standard security mechanisms
  • Maximize broad supportability in a distributed deployment environment
    • Simulation repositories, contents repositories, and LMS may not be co-resident with the student
  • Prepare for projected standardization efforts
    • Within simulation community – develop Best Practices from simulation viewpoint
    • Transition Best Practices to ADL community for expansion from ADL viewpoint

SISC – Simulation Interoperability Standards

Committee

LTSC – Learning Technology Standards

Committee

proof of principle phase i hla adl interface
Proof of Principle (Phase I)HLA-ADL Interface

Student’s Platform

Tomcat

SCORM LMS

Browser

Collector SCO

Launcher Asset

Existing

Simulation

Listener Application

API Wrapper

Launcher Applet

Collector Applet

RTI

phase i proof of principle hello world
Phase I - Proof of Principle“Hello World”
  • “Keep It Simple”
    • Focus on interface issues
  • Use In-house training material in ADL-format for teaching HLA
  • Use the in-house HLA HelloWorld simulation distributed with the RTI
  • Put all components of architecture on student’s machine
    • HLA RTI
    • ADL RTE and supporting server
    • HLA Training material
    • HelloWorld federation
  • Use ADL program’s Sample RTE

RTI – RunTime Infrastructure

RTE – RunTime Environment

progress and plans to date
Progress and Plans to Date
  • Progress:
    • Oct 00 – As part of HLA transition, DMSO tasked members of the HLA technical support team to build a training distribution system to provide HLA course content to the M&S community.
    • Mar 01 - DMSO commissioned a study to investigate the feasibility of combining simulations and content using the HLA and SCORM.
    • Oct 01 – Member’s of the HLA technical support team were tasked to develop a proof of principle prototype of an HLA ADL architecture.
    • Jun 02 - Demonstrated Phase I to DMSO leadership
    • Sept 02 - Demonstrated Phase I to Mr. Dan Gardner, USD for Personnel and Readiness
    • Oct 02 - Lab tested Phase II architecture using Simple Object Access Protocol (SOAP).
    • Dec 02 - Demonstration of Phase II architecture at I/ITSEC using Hello World federate
  • Plans:
    • Test the integrated SOAP architecture with a more complex federation and more substantive content (JFCOM JTLS)
    • Develop a draft HLA-ADL Guidance specification (Best Practices) in accordance with the IEEE Learning Training Standards Committee specification development process
    • Have ADL community expand use, and update Guidance Specification
at the highest level
ADL – www.adlnet.org

The Sharable Content Object Reference Model (SCORM) defines a Web-based learning "Content Aggregation Model" and "Run-Time Environment" for learning objects. The SCORM is a collection of specifications adapted from multiple sources to provide a comprehensive suite of e-learning capabilities that enable interoperability, accessibility and reusability of Web-based learning content. The work of the Advanced Distributed Learning (ADL) Initiative to develop the SCORM is also a process to knit together disparate groups and interests. This reference model aims to coordinate emerging technologies with commercial and/or public implementations.

At the Highest Level…
  • HLA – www.dmso.mil

The High Level Architecture (HLA) is a general purpose architecture for simulation reuse and interoperability. The HLA was developed under the leadership of the Defense Modeling and Simulation Office (DMSO) to support reuse and interoperability across the large numbers of different types of simulations developed and maintained by the DoD. The HLA Baseline Definition was completed on August 21, 1996. It was approved by the Under Secretary of Defense for Acquisition and Technology (USD(A&T)) as the standard technical architecture for all DoD simulations on September 10, 1996. <snip> The HLA MOA was signed and approved in Nov. 2000.

soap based hla adl integration
SOAP-based HLA-ADL Integration

Proof of Principle (Phase II)HLA-ADL Interface

the “system” must be able to notify the LMS if student failure, thus enabling the student to obtain remedial training from the LMS if desired

The “system” must be able to launch a federate from a SCO

Client-side Platform

Tomcat

SCORM LMS

Federation Web Services Platform

Simulation Platform

The “system” must be able to monitor the student’s performance of the desired task

Browser

Tomcat

Existing

Simulation

API Wrapper

Listener Launcher Servlet

Launcher Applet

HTTP

Post

Listener Federate

HTTP

Get

Collector Servlet

Collector Applet

SOAP

Results

Arbitrarily

Complex

Federation

The “system” must be able to feedback the student’s progress

RTI

benefits of this approach slide 1 of 2
Benefits of this Approach (slide 1 of 2)
  • The student engages in the proven instructional paradigm of “learning followed by doing”
  • The system automatically performs intelligent, real time assessment of the student’s interaction with the simulation and feeds the results directly back to the learning management system, enabling focused, individualized remediation
  • Automated remediation reduces reliance on instructors for one-on-one student assessment
  • A legacy simulation may be made available without moving its dedicated hardware or trying to create a new installation on potentially rare hardware, both very expensive propositions
benefits of this approach slide 2 of 2
Benefits of this Approach (slide 2 of 2)
  • The simulation can stay home-based with its technical support and configuration management
  • Content can also be home-based with its technical support and configuration management
  • Simulations and training are guaranteed to be absolutely up to date when delivered to the student
  • The warfighter can access this rich training environment both while deployed and while home based
  • The web-based protocols employed allow operation through most firewalls