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Computer Program Detail Page

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written by Juan Aguirregabiria
edited by Wolfgang Christian
The Ejs Duffing Measure model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2γx' - x (1 - x2) = f cos(ω t), where each prime denotes a time derivative.  The simulation displays the evolution of a group of oscillators with similar initial parameters on a Poincare plot and the evolution of the oscillator with the central initial parameter displayed on a separate Poincare plot.  The evolution parameters can be changed via textboxes.  You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item.  

Ejs Duffing Measure model was created using the Easy Java Simulations (Ejs) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_ehu_chaos_Duffing_measure.jar file will run the program if Java is installed.  Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models.  Additional Ejs models for non-linear dynamics and chaos are available.  They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

Please note that this resource requires at least version 1.5 of Java (JRE).
View the source code document attached to this resource
Subjects Levels Resource Types
Mathematical Tools
- Non-linear Equations
Oscillations & Waves
- Oscillations
= Non-Linear Systems
Other Sciences
- Computer Science
- Upper Undergraduate
- Instructional Material
= Activity
= Curriculum support
= Interactive Simulation
Intended Users Formats Ratings
- Educators
- Professional/Practitioners
- Learners
- application/java
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Access Rights:
Free access
Restriction:
© 2008 Juan M. Aguirregabiria
Additional information is available.
Keywords:
Duffing, Easy Java Simulations, Ejs, OSP, Open Source Physics, non-linear dynamics, oscillator
Record Creator:
Metadata instance created August 17, 2008 by Mario Belloni
Record Updated:
June 5, 2014 by Andreu Glasmann
Last Update
when Cataloged:
August 18, 2008
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
J. Aguirregabiria, Computer Program EJS DUFFING MEASURE MODEL, Version 1.0 (2008), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7861&DocID=646).
AJP/PRST-PER
J. Aguirregabiria, Computer Program EJS DUFFING MEASURE MODEL, Version 1.0 (2008), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7861&DocID=646>.
APA Format
Aguirregabiria, J. (2008). Ejs Duffing Measure Model (Version 1.0) [Computer software]. Retrieved October 22, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7861&DocID=646
Chicago Format
Aguirregabiria, Juan. "Ejs Duffing Measure Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7861&DocID=646 (accessed 22 October 2014).
MLA Format
Aguirregabiria, Juan. Ejs Duffing Measure Model. Vers. 1.0. Computer software. 2008. Java (JRE) 1.5. 22 Oct. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7861&DocID=646>.
BibTeX Export Format
@misc{ Author = "Juan Aguirregabiria", Title = {Ejs Duffing Measure Model}, Month = {August}, Year = {2008} }
Refer Export Format

%A Juan Aguirregabiria
%T Ejs Duffing Measure Model
%E Wolfgang Christian, (ed)
%D August 18, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7861&DocID=646
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Aguirregabiria, Juan
%D August 18, 2008
%T Ejs Duffing Measure Model
%E Christian, Wolfgang
%7 1.0
%8 August 18, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7861&DocID=646


Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

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