Connecting micro dynamics and population distributions in system dynamics models

Saeideh Fallah-Fini, Hazhir Rahmandad, Hsin Jen Chen, Hong Xue, Youfa Wang

Research output: Contribution to journalArticle

Abstract

Researchers use system dynamics models to capture the mean behavior of groups of indistinguishable population elements (e.g. people) aggregated in stock variables. Yet many modeling problems require capturing the heterogeneity across elements with respect to some attribute(s) (e.g. body weight). This paper presents a new method to connect the micro-level dynamics associated with elements in a population with the macro-level population distribution along an attribute of interest without the need to explicitly model every element. We apply the proposed method to model the distribution of body mass index and its changes over time in a sample population of American women obtained from the U.S. National Health and Nutrition Examination Survey. Comparing the results with those obtained from an individual-based model that captures the same phenomena shows that our proposed method delivers accurate results with less computation than the individual-based model.

Original languageEnglish (US)
Pages (from-to)197-215
Number of pages19
JournalSystem Dynamics Review
Volume29
Issue number4
DOIs
StatePublished - 2013

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Population distribution
Dynamic models
Nutrition
Macros
body weight
macro level
micro level
Health
nutrition
System dynamics model
examination
health
Group

ASJC Scopus subject areas

  • Management of Technology and Innovation
  • Strategy and Management
  • Social Sciences (miscellaneous)

Cite this

Fallah-Fini, S., Rahmandad, H., Chen, H. J., Xue, H., & Wang, Y. (2013). Connecting micro dynamics and population distributions in system dynamics models. System Dynamics Review, 29(4), 197-215. https://doi.org/10.1002/sdr.1508

Connecting micro dynamics and population distributions in system dynamics models. / Fallah-Fini, Saeideh; Rahmandad, Hazhir; Chen, Hsin Jen; Xue, Hong; Wang, Youfa.

In: System Dynamics Review, Vol. 29, No. 4, 2013, p. 197-215.

Research output: Contribution to journalArticle

Fallah-Fini, S, Rahmandad, H, Chen, HJ, Xue, H & Wang, Y 2013, 'Connecting micro dynamics and population distributions in system dynamics models', System Dynamics Review, vol. 29, no. 4, pp. 197-215. https://doi.org/10.1002/sdr.1508
Fallah-Fini, Saeideh ; Rahmandad, Hazhir ; Chen, Hsin Jen ; Xue, Hong ; Wang, Youfa. / Connecting micro dynamics and population distributions in system dynamics models. In: System Dynamics Review. 2013 ; Vol. 29, No. 4. pp. 197-215.
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