The establishment of a goal is one way to provide a basis for results thought is has its difficulties.

The purpose of this model is to have the user change the value of stocks, flows and converters to experience a variety of different graphical results. Understanding this generic model is important pre-requisite to learning about intravenous drugs in the body, radioactivity, self-esteem, water flowing from a drain and many other basic natural systems.

This is the model of the collaborative model development process which is being developed in a collaborative method to help understand what guidelines might be developed to aid in the model development.

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A System is a matter of perspective.

Network Magic can be considered to have four primary stakeholders, the company, Support, Other Organizations, and Customers.

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My first simulation model example.

It's now time for the stakeholders to take the investigation resulting from leverage and craft a strategy which will address the current situation in a manner that is beneficial to the whole system.

Rich Pictures are simply pictorial representations of the relations between a number of relevant elements. The strength of rich pictures is that they're free form without any formal rules, which also tends to be the shortcoming of rich pictures.

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Folders allow one to hide the detail complexity in certain places.

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Two goal seeking structures attempting to resolve and based on the delay one may tend to settle for less. See also Archetypes.

The delays associated with adjusting the shower is a very common example of the Balancing Loop with Delay Systems Archetype. 

Success to the successful archetype represents two reinforcing structures which may be in a delicate balance though as soon as one gains a small advantage the resource allocation favors the more successful and the result is then rapidly skewed in the direction of the more successful. See also Archetypes.

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 Conference version at http://bit.ly/HlxtZj

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It's relatively well understood that you can't be all things to all people. Somewhere one has to make choices. An Attractiveness Principle Systems Archetype is essentially a Limits to Growth Systems Archetype with multiple limits, all of which can not be addressed equally. See also Archetypes.

A simple agent based foraging model. Consumer agents will move between fertile patches consuming them.

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Example of the exponential decay of a Stock with the decay rate being a function of a decay constant.

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WIP to mirror Roam research Child page

Identification of the leverage points within the Network Magic Structure is essential to developing a strategy.

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Investigations into the relationships responsible for the success and failure of nations. This investigation was prompted after reading numerous references on the subject and perceiving that *Why Nations Fail: The Origins of Power, Prosperity, and Poverty* by Acemoglu and Robinson seem to make a great deal of sense.

A savings account model is the basis for a retirement account.

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Inventory Model v4.0 calculates min days inv & max days inv and makes adjustments for desired service level. See also: Inventory Model v3.0.

This is a simplification of the Austerity vs Prosperity model in the hope that it will be easier to understand.

The city of Bergen has a goal of becoming fossil-free in 2030. How do we get there? Some weeks ago, local experts from different domains came together and developed a causal loop diagram (CLD). This will form the skeleton for the modelling hackathon.

A model developed as a result of the posts resulting from the STW Update 13.05.20​.