Web based laboratories technical and pedagogical considerations
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Web-Based Laboratories: Technical and Pedagogical Considerations. Jim Henry, Ph.D., P.E. College of Engineering and Computer Science University of Tennessee at Chattanooga AIChE, 2001 Reno, NV. Chattanooga, Tennessee. What are " Web-Based Laboratories "?.

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Web based laboratories technical and pedagogical considerations

Web-Based Laboratories: Technical and Pedagogical Considerations

Jim Henry, Ph.D., P.E.

College of Engineering and Computer Science

University of Tennessee at Chattanooga

AIChE, 2001 Reno, NV


Chattanooga tennessee

Chattanooga,Tennessee


What are web based laboratories

What are "Web-Based Laboratories"?

Lab experimentsoffered via the WEB

WHY ?

Accommodates Scheduling Problems

Can serve equipment-challenged campuses

It's all the go to get on the Web

We enjoy doing this stuff


What are technical considerations

What are “Technical Considerations”?

How is it done

Available stationsMore reliability

More experiments

More accessibility

Ease of use


What are pedagogical considerations

What are "Pedagogical Considerations"?

Student support offered via the WEB

Outcomes and Assessment

Teaching and Learning expansion

Team mailing lists

Discussion Forums

FAQ

Intelligent Agent responder


Web based laboratories technical and pedagogical considerations

Good News- Bad News

Hardware

experiments

It works

It's reliable

Managing "distant"

students


Web based laboratories technical and pedagogical considerations

The Connections

WWW based

Netscape or Internet Explorer

Familiar & accessible & friendly

Direct via Internet

Custom LabVIEW programs

Other software to use MATLAB, e.g.


Web based laboratories technical and pedagogical considerations

WWW Protocol

INTERNET . . . . .

LabSERVER

Document

Server

File Sharing

LabCLIENTs


Web based laboratories technical and pedagogical considerations

Classical Control Systems

Set

Point

Output

CONTROL

SYSTEM

+

-


Web based laboratories technical and pedagogical considerations

Laboratory Remote Operation

Set

Point

Output

CONTROL

SYSTEM

+

-

LAB SYSTEM

(server)

USER

(client)


Web based laboratories technical and pedagogical considerations

Controls Laboratory Equipment Details

7 - Stations All S.I.S.O., “Stable”

Pressure Level

Voltage Speed

Flow Temperature

Position


Web based laboratories technical and pedagogical considerations

Temperature

Pressure

Flow


Web based laboratories technical and pedagogical considerations

Speed and Voltage

Level, 2-tanks


Web based laboratories technical and pedagogical considerations

Ch E Laboratory Equipment Details

10 - Stations

Distillation Filter

Absorber Dehumidifier

Heat Pump Drying Oven

Combustion Heat Exchanger

Cooling TowerPressure Swing Absorption


Web based laboratories technical and pedagogical considerations

Distillation

Pressure Swing Absorption


Web based laboratories technical and pedagogical considerations

Laboratory Experiment Details

System Identification

Steady-State Step

Ramp Sine

Pulse "Custom"

Feedback Control

Proportional w/ bias

Proportional Integral


Web based laboratories technical and pedagogical considerations

Step InputResults

Input = 50%, t < 5 sec

Input = 90%, t > 5 sec

40K

t

t

o


Web based laboratories technical and pedagogical considerations

Step InputResults

  • h

40K

t

t

o


Web based laboratories technical and pedagogical considerations

Step InputResults


Web based laboratories technical and pedagogical considerations

Step InputResults

Input = 50%, t < 5 sec

Input = 90%, t > 5 sec

40K

t

t

o


Web based laboratories technical and pedagogical considerations

Step InputResults

40K

t

t

o


Web based laboratories technical and pedagogical considerations

Step InputResults

40K

t

t

o


Web based laboratories technical and pedagogical considerations

Step InputResults

40K

t

t

o


Web based laboratories technical and pedagogical considerations

Step InputResults

40K

t

t

o


Web based laboratories technical and pedagogical considerations

t

o


Web based laboratories technical and pedagogical considerations

Diponegoro University, Indonesia

University of Koeln, Germany


Web based laboratories technical and pedagogical considerations

Direct Connection

Your

Computer

INTERNET . . . . .

TCP/IP

LabCLIENTs


Web based laboratories technical and pedagogical considerations

Direct Connection

Custom Software

SERVER

Set

Point

Input Data

Output

CONTROL

SYSTEM

+

-

Output

Data


Web based laboratories technical and pedagogical considerations

May-June, 2001


Web based laboratories technical and pedagogical considerations

Web Sites

chem.engr.utc.edu

link to this paper:

chem.engr.utc.edu/AIChE


Web based laboratories technical and pedagogical considerations

Web Sites

chem.engr.utc.edu

link to this talk & paper:

chem.engr.utc.edu/AIChE


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student responses

We can pick the time to meet to run the labs instead of being required to be here for a set class time

The ability to perform experiments from remote locations


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student responses

From Anonymous Student Survey, UT-Chattanooga, 2001

how much you think you have been helped in these areas by remote operation of laboratory equipment or access to data an graphs on the web

+1 S.D.

approach to effective operation and troubleshooting3.5

new learning3.5


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student responses

From Anonymous Student Survey, UT-Chattanooga, 2001

how much you think you have been helped ...

+1 S.D.toMean

organization of experimental testing efforts3.4

effective data analysis3.4

obtaining and analyzing experimental data3.4

the care needed to obtain reasonable data3.4

General familiarity with engineering equipment, experimental design and planning3.3

report writing that is brief and to the point with well documented calculations included3.3

engineering analysis3.3


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student responses

You can run experiments during class time or at 3AM as well as turn in your reports at any time over the web I liked the freedom of the lab

It worked out well being able to work at different times


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student responses

This was a new experience. Especially running the experiments on the Web, and sending the assignments by e-mail

Web access learning is very important these days, when a lot of information is available and e-mail is taking the place of traditional phone calling and letter writing.


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student support

Educational Materials for Remote Laboratory Operation

descriptions of the equipment

examples of experiments

procedures for conducting the experiments

sample topics


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student support

  • expert system – LISA

  • Laboratory Instruction Student Aide

    • (a laboratory assistant bot)


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student activities

Problem-oriented activities that are open-ended, and multi- or interdisciplinary

Visual formats that allow creation of mental models

A rich learning environment containing a variety of interactive resources


Web based laboratories technical and pedagogical considerations

Pedagogy

-Student activities

Cooperative group work, emphasizing shared intelligence

Learning through exploration and discovery

Authentic assessment, emphasizing the qualitative nature of student work


Web based laboratories technical and pedagogical considerations

Vision & Plans

Dissemination opportunities

www.RealLabs.net

-- New systems

-- Renovated and Updated systems


Web based laboratories technical and pedagogical considerations

Acknowledgements

Tennessee Taxpayers

National Science Foundation

UTC's Center for Excellence in Computer Applications

National Instruments

Microsoft Corporation

Creative Engineering Laboratory Systems

Lupton Renaissance Fund


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