Limitations of SD!

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"Shilp Verma"
Junior Member
Posts: 14
Joined: Fri Mar 29, 2002 3:39 am

Limitations of SD!

Post by "Shilp Verma" » Wed Apr 19, 2000 1:36 pm

Hello people,

Im Shilp Verma from India. Im doing my Masters in Rural
Management from the Institute of Rural Management, Anand
(IRMA) [
http://irma.irm.ernet.in]

Right now, im doing my internship at BANAS Dairy Cooperative
Union. I dont know how many of you are familiar with the concept
of cooperatives. Anyway, my project here involves developing a
Savings/Pension {Old Age Social Security} Scheme for the more
than 140,000 members of the Union.

This is where I got introduced to the fundamentals of System
Dynamics. Im trying to model the scheme using System
Dynamics but am really new to the field. I would like to know
peoples experience with using SD as a decision tool in social
environment where most of the variables are "soft variables".

Im also interested in knowing some of the limitations of SD. From
what Ive heard from people, SD is a very powerful tool but under
certain circumstances and situations only. I would like to know
what are the limitations of the approach Im using and what
precautions I need to take.

Im a novice in this field but have found it very interesting &
massively addictive. Im interested in learning from people who have
been using this for years. Im using Vensim PLE for my modelling
and would be happy to share my work with anyone who is
interested.

Regards....
Shilp Verma
MTS-20, Banas Dairy, PO Box#20,
Palanpur, Banaskantha District,
Gujarat-385001.
EMail: shilp@banas.guj.nic.in
Phone: (02742)53881-85
Fax : (02742)52723


"Jay W. Forrester"
Junior Member
Posts: 14
Joined: Fri Mar 29, 2002 3:39 am

Limitations of SD!

Post by "Jay W. Forrester" » Fri Sep 22, 2000 3:40 pm

Perhaps the information below will be useful.

===============================================
===============================================
Information on System Dynamics
Jay W. Forrester
August 25, 1999

System Dynamics Bibliography:

To order the system dynamics bibliography of over 4100 entries,
specify IBM type PC, or Macintosh

Send $35 in US$ drawn on a US bank to:

System Dynamics Society
Roberta Spencer, Executive Director
Milne 300--Rockefeller College
State University at Albany
Albany, NY 12222 USA

tel: 1-518-442-3865Ý
fax: 518-442-3398
email:
System.Dynamics@albany.edu

Three formats are available:

1. For Endnote, a very effective bibliography software available for either
Macintosh or PC from:

Niles & Associates, Inc
800 Jones St.
Berkeley, CA 94710 USA

Tel: 510-559-8592
Fax: 510-559-8683
Internet: nilesinc@well.sf.ca.us

I use Endnote and recommend it and use it to search for the references.

2. An exported version with field delimiters that presumably can be loaded
into some other kind of database.

3. A listing that one can look at in a word processor and do some simple
finding operations.

The bibliography can also be downloaded from:
http://www.vensim.com/sdmail/sdbib.html
-----------------------------------------------

The publications list of the System Dynamics Group at MIT is available on
the web as an Adobe Acrobat document from:
FTP://Sysdyn.MIT.edu/Ftp/sdep/papers/D-3059-43.pdf

---------------------------------------
Membership in the System Dynamics Society and subscription to the System
Dynamics Review
are US$90 per year for regular members
and US$45 for students.
Send application to:

Sarah Stevens
Journals Administration Department
John Wiley & Sons Ltd
1 Oldlands Way
Bognor Regis
West Sussex PO22 9SA
United Kingdom

or

Subscription Department C
John Wiley & Sons Inc.
605 Third Avenue, New York,
NY 10158-0012, USA

or

contact the Society office


To contact the office of the System Dynamics Society and to order copies of
the "Beer Game" group simulation exercise:
tel: 1-518-442-3865
fax: 518-442-3398
email: System.Dynamics@albany.edu


-------------------------------------
There is a system dynamics discussion group on the Internet.
To join, send email to: majordomo@world.std.com
In the body of the message, enter the following two lines:

Subscribe system-dynamics
End

------------------------------------
The next annual international conference of the System Dynamics Society
will be in Norway, August 6-10, 2000. Write to the System Dyanmics
Society,

System Dynamics Society
Roberta Spencer, Executive Director
Milne 300--Rockefeller College
State University at Albany
Albany, NY 12222 USA
tel: 1-518-442-3865Ý
fax: 518-442-3398
email: System.Dynamics@albany.edu
----------------------------------------

The publisher for books in the following block has changed from
Productivity Press to Pegasus Communications.

Pegasus Communications, Inc.
One Moody Street
Waltham, MA 02453-5339

Within the U.S
tel:1-800-272-0945
fax: 1-800-701-7083
Outside the U.S.
tel: 781-398-9700
fax: 781-894-7175
Web page: www.pegasuscom.com

Alfeld, Louis Edward, and Alan K. Graham. 1976. Introduction to Urban
Dynamics. Waltham, MA: Pegasus Communications. 333 pp.

Forrester, Jay W. 1961. Industrial Dynamics. Waltham, MA: Pegasus
Communications. 464 pp.

Forrester, Jay W. 1968. Principles of Systems. (2nd ed.). Waltham, MA:
Pegasus Communications. 391 pp.

Forrester, Jay W. 1969. Urban Dynamics. Waltham, MA: Pegasus
Communications. 285 pp.

Forrester, Jay W. 1971. World Dynamics. (1973 second ed.). Waltham, MA:
Pegasus Communications. 144 pp. Second edition has an added chapter on
physical vs. social limits.

Forrester, Jay W. 1975. Collected Papers of Jay W. Forrester. Waltham, MA:
Pegasus Communications. 284 pp

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