Aztecs

Aztecas

Before addressing the specific case of the smallpox epidemic among the Aztecs, it is important to introduce the basic epidemiological model known as SIR (Susceptible – Infected – Recovered). This model helps explain how an infection spreads through a population over time by classifying people into three main categories:

• Susceptible (S): Individuals who have not yet been infected but are at risk.
• Infected (I): Individuals who have contracted the disease and can transmit it.
• Recovered (R): Individuals who are no longer contagious, either because they have developed immunity or have died.

WIP Overview model structures of Khalid Saeed's 2014 WPI paper Jay Forrester’s Disruptive Models of Economic Behavior  See also General SD and Macroeconomics CLDs IM-168865

This model represents a repair contract to fix a group of houses with unresolved construction defects.

An upgraded version of Glossi utilizing System Dynamics (SD) simulation.

Introduction to system dynamics | LinkedIn Learning

A simulation of burnout based on workload and amount of sleep.

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

Causal loop structure of system dynamics models of the business cycle and the Kondratieff long wave from Gene Bellinger's AI gemini prompts mc and mr Jan2026 From MIT Sloan school work esp Forrester and Sterman

Daniel Stanton's LinedIn Learning Course:

The System Dynamic Model represents the Covid19 cases in Brgy. Sicsican, Puerto Princesa City as of May 27,2022. 

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One of the most powerful principles of systems Este artículo explora el principio fundamental del pensamiento sistémico que establece que la estructura de un sistema determina su comportamiento. A través del caso del programa estadounidense TANF (Asistencia Temporal para Familias Necesitadas) —que ofrece apoyos económicos, alimentos básicos y servicios asociados— se ilustran tres configuraciones estructurales distintas que generan comportamientos radicalmente diferentes. Este análisis está orientado a propósitos educativos y muestra cómo una comprensión profunda de las estructuras permite intervenir de manera más efectiva tanto en sistemas sociales como organizacionales.

Diagrama de Laços Causais construído a partir da aplicação do método

Based on a dialogue on the System Dynamics mailing list regarding the current level of acceptance of System Dynamics after it has been promoted for over 70 years I dredged up the following set of influences as a thought exercise. This is an example of a Drifting Goals Archetype.

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Simplified system dynamics model of the global carbon cycle. The model represents carbon exchange among four aggregated reservoirs: atmosphere, terrestrial biosphere, surface ocean, and deep ocean. Fossil fuel emissions enter the atmosphere as an external forcing, while internal flows redistribute carbon between the atmosphere, land, surface ocean, and deep ocean. The model is intended to explore transient behavior, natural carbon sinks, atmospheric carbon persistence, and the long-term regulating role of the ocean.

WIP Overview model structures of Khalid Saeed's 2014 WPI paper Jay Forrester’s Disruptive Models of Economic Behavior  See also General SD and Macroeconomics CLDs IM-168865

Simplified system dynamics model of the global carbon cycle. The model represents carbon exchange among four aggregated reservoirs: atmosphere, terrestrial biosphere, surface ocean, and deep ocean. Fossil fuel emissions enter the atmosphere as an external forcing, while internal flows redistribute carbon between the atmosphere, land, surface ocean, and deep ocean. The model is intended to explore transient behavior, natural carbon sinks, atmospheric carbon persistence, and the long-term regulating role of the ocean.

Simplified system dynamics model of the global carbon cycle. The model represents carbon exchange among four aggregated reservoirs: atmosphere, terrestrial biosphere, surface ocean, and deep ocean. Fossil fuel emissions enter the atmosphere as an external forcing, while internal flows redistribute carbon between the atmosphere, land, surface ocean, and deep ocean. The model is intended to explore transient behavior, natural carbon sinks, atmospheric carbon persistence, and the long-term regulating role of the ocean.

Modelo Predador Presas