John Kingdon's Theory of Streams in the politics of the policy process. From the  book  Kingdon, John (1999)  Agendas Alternatives and Public Policies . Longman New York. Click on View Story at the bottom left.

John Kingdon's Theory of Streams in the politics of the policy process. From the book Kingdon, John (1999) Agendas Alternatives and Public Policies. Longman New York. Click on View Story at the bottom left.

           Despite a mature field of inquiry, frustrated educational policy makers face a crisis characterized by little to no clear research-based guidance and significant budget limitations --  in the face of too often marginal or unexpectedly deleterious achievement impacts. As such, education pe
Despite a mature field of inquiry, frustrated educational policy makers face a crisis characterized by little to no clear research-based guidance and significant budget limitations --  in the face of too often marginal or unexpectedly deleterious achievement impacts. As such, education performance has been acknowledged as a complex system and a general call in the literature for causal models has been sounded. This modeling effort represents a strident first step in the development of an evidence-based causal hypothesis: an hypothesis that captures the widely acknowledged complex interactions and multitude of cited influencing factors. This non-piecemeal, causal, reflection of extant knowledge engages a neuro-cognitive definition of students.  Through capture of complex dynamics, it enables comparison of different mixes of interventions to estimate net academic achievement impact for the lifetime of a single cohort of students. Results nominally capture counter-intuitive unintended consequences: consequences that too often render policy interventions effete. Results are indexed on Hattie Effect Sizes, but rely on research identified causal mechanisms for effect propagation. Note that the net causal interactions have been effectively captured in a very scoped and/or simplified format.  Relative magnitudes of impact have been  roughly adjusted to Hattie Ranking Standards (calibration): a non-causal evidence source. This is a demonstration model and seeks to exemplify content that would be engaged in a full or sufficient model development effort.  Budget & time constraints required significant simplifying assumptions. These assumptions mitigate both the completeness & accuracy of the outputs. Features serve to symbolize & illustrate the value and benefits of causal modeling as a performance tool.
From Jay Forrester 1988 killian lectures youtube  video  describing system dynamics at MIT. For Concepts See  IM-185226 . For more detailed biography See Jay Forrester memorial  webpage  For MIT HIstory see  IM-184930
From Jay Forrester 1988 killian lectures youtube video describing system dynamics at MIT. For Concepts See IM-185226. For more detailed biography See Jay Forrester memorial webpage For MIT HIstory see IM-184930
WIP based on Emery Roe's 2013  book . See also Dynamics in Action  IM-3239  for more on behavior and The Art of the State  IM-11962  for more on Grid-Group Cultural Theory
WIP based on Emery Roe's 2013 book. See also Dynamics in Action IM-3239 for more on behavior and The Art of the State IM-11962 for more on Grid-Group Cultural Theory
4 2 weeks ago
 Sources of Policy Resistance. From  article  Sterman, John D.   Learning from Evidence in a Complex World  Am J Public Health 2006 96: 505-514. See also  fighting complexity  IM-1955

Sources of Policy Resistance. From article Sterman, John D.  Learning from Evidence in a Complex World Am J Public Health 2006 96: 505-514. See also fighting complexity IM-1955

 An adaptation of the URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's How small system dynamics models can help the public policy process. System Dynamics Review 27: 22-44 (2011)  Researchgate link   and  eolss synopsis  based on LA Alfeld and AK Graham's Introduction t

An adaptation of the URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's How small system dynamics models can help the public policy process. System Dynamics Review 27: 22-44 (2011) Researchgate link  and eolss synopsis based on LA Alfeld and AK Graham's Introduction to Urban Dynamics 1976. Also p 195 (Dynamo Model Listing).

An element of Perspectives: The Foundation of Understanding and Insights for Effective Action. Register at http://www.systemswiki.org/

 Go to  Gene Bellinger's insight version  with video link This common archetype of systems that include relapse or recidivism allows exploration of the unintended effects of increasing upstream capacity and swamping downstream capacity. The increase in the relapse rate eventually returns to swamp up

Go to Gene Bellinger's insight version with video link This common archetype of systems that include relapse or recidivism allows exploration of the unintended effects of increasing upstream capacity and swamping downstream capacity. The increase in the relapse rate eventually returns to swamp upstream capacity as well. A social welfare example, based on a TANF case study, from How Small System Dynamics Models Can Help the Policy Process. N. Ghaffarzadegan, J. Lyneis, GP Richardson. System Dynamics Review 27,1 (2011) 22-44 abstract Conference version here

5 2 months ago
From PLOS One  Article  April 2012 Worni, M et al System Dynamics to Model the Unintended Consequences of Denying Payment for Venous Thromboembolism after Total Knee Arthroplasty
From PLOS One Article April 2012 Worni, M et al System Dynamics to Model the Unintended Consequences of Denying Payment for Venous Thromboembolism after Total Knee Arthroplasty
Grid-Group Culture applied to Public Management based on Christopher Hood's 1998 book. plus excerpts from Schwartz and Thompson's 1990 Book Divided we stand. See also Managing Mess  IM-11581  and FourCultures  Blog  and  Wikipedia Cultural Theory of Risk
Grid-Group Culture applied to Public Management based on Christopher Hood's 1998 book. plus excerpts from Schwartz and Thompson's 1990 Book Divided we stand. See also Managing Mess IM-11581 and FourCultures Blog and Wikipedia Cultural Theory of Risk
 An adaptation of the URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's How small system dynamics models can help the public policy process. System Dynamics Review 27: 22-44 (2011) Conference version at  http://bit.ly/HlxtZj   and LA Alfeld and AK Graham's Introduction to

An adaptation of the URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's How small system dynamics models can help the public policy process. System Dynamics Review 27: 22-44 (2011) Conference version at http://bit.ly/HlxtZj  and LA Alfeld and AK Graham's Introduction to Urban Dynamics 1974 p 195.

An element of Perspectives: The Foundation of Understanding and Insights for Effective Action. Register at http://www.systemswiki.org/

  Base del modelo territorial de Ciudad Hermosa   Una adaptación del URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's  How small system dynamics models can help the public policy process  at System Dynamics Review 27: 22-44 (2011) ( click here to view full paper ). 

Base del modelo territorial de Ciudad Hermosa

Una adaptación del URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's How small system dynamics models can help the public policy process at System Dynamics Review 27: 22-44 (2011) (click here to view full paper). 

 Services planning for people with intellectual disability concept map. Stock and FLow model is Insight 668 and  RIch Picture is Insight  746

Services planning for people with intellectual disability concept map. Stock and FLow model is Insight 668 and  RIch Picture is Insight  746

            This model blends insights from several research based sources to establish an initial capture or causal hypothesis.   The initial, presumed structures and influences captures the dominant research-reported threads, elements and dynamics as relate to radicalization and, conversely: legit
This model blends insights from several research based sources to establish an initial capture or causal hypothesis.   The initial, presumed structures and influences captures the dominant research-reported threads, elements and dynamics as relate to radicalization and, conversely: legitimization & state stability.
 Flows between acute hospital and aged care for older people. See  IM-1012  for a simpler version

Flows between acute hospital and aged care for older people. See IM-1012 for a simpler version

Structural determinants of cross functional planning success from Oliva and watson 2007   working paper pdf  on supply chain planning published in Journal of operations management in 2011  research gate paper   See also  Core theory of success Insight
Structural determinants of cross functional planning success from Oliva and watson 2007  working paper pdf on supply chain planning published in Journal of operations management in 2011 research gate paper 
From Jay Forrester 1988 killian lectures youtube  video  describing system dynamics at MIT. For more detailed biography See Jay Forrester memorial  webpage  For MIT HIstory see  IM-184930  For Applications se  IM-185462
From Jay Forrester 1988 killian lectures youtube video describing system dynamics at MIT. For more detailed biography See Jay Forrester memorial webpage For MIT HIstory see IM-184930 For Applications se IM-185462
 An adaptation of the URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's How small system dynamics models can help the public policy process. System Dynamics Review 27: 22-44 (2011) Conference version at  http://bit.ly/HlxtZj   and LA Alfeld and AK Graham's Introduction to

An adaptation of the URBAN1 Model from Navid Ghaffarzadegan, John Lyneis and George P Richardson's How small system dynamics models can help the public policy process. System Dynamics Review 27: 22-44 (2011) Conference version at http://bit.ly/HlxtZj  and LA Alfeld and AK Graham's Introduction to Urban Dynamics 1974 p 195.

An element of Perspectives: The Foundation of Understanding and Insights for Effective Action. Register at http://www.systemswiki.org/

WIP based on Mascia2017 Analyzing conservation strategies  article  and other mostly private insights. A more detailed form of structure agency  IM-1163
WIP based on Mascia2017 Analyzing conservation strategies article and other mostly private insights. A more detailed form of structure agency IM-1163
2 months ago
  ​S-Curve + Delay for Bell Curve Showing Erlang Distribution      Generation of Bell Curve from Initial Market through Delay in Pickup of Customers     This provides the beginning of an Erlang distribution model      The  Erlang distribution  is a two parameter family of continuous  probability dis
​S-Curve + Delay for Bell Curve Showing Erlang Distribution

Generation of Bell Curve from Initial Market through Delay in Pickup of Customers

This provides the beginning of an Erlang distribution model

The Erlang distribution is a two parameter family of continuous probability distributions with support . The two parameters are:

  • a positive integer 'shape' 
  • a positive real 'rate' ; sometimes the scale , the inverse of the rate is used.

 Rich Picture Causal Loop Diagram of Quality and Size Tradeoffs in Cared Accommodation

Rich Picture Causal Loop Diagram of Quality and Size Tradeoffs in Cared Accommodation

Five Information Filters and Bounded Rationality affecting Policy Action from Fig 7.12 p210 John Morecroft's  Book  2007 Strategic Modelling and Business Dynamics
Five Information Filters and Bounded Rationality affecting Policy Action from Fig 7.12 p210 John Morecroft's Book 2007 Strategic Modelling and Business Dynamics