Questions tagged [systemdynamics]
38 questions
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In modeling system dynamics, when do we use a stock and when simply a variable?
System dynamics models are composed of stocks (representing continuous quantities about a system of interest), flows (controlling the in- and out-flow to the stocks), and variables (that might be constants or also change with the values of the…
ks.and1
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Function for regaining park capacity for visitors?
I am getting used to Vensim for Modelling System Dynamics. To train, I am busy with a System Dynamics of Park Visitors. Where I have modelling the following Stock and Flow Diagram:
For the equation of 'Max Capacity' I have defined it as:
max…
user12368876
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Anylogic - access variables from other agents
I am trying to model a production infrastructure in anylogic which consists of several agents. One of it is a "steam network" (system dynamics) which starts with a flow from nowhere. The dynamic value of this flow is supposed to be the steam output…
Josie
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Add_people() function in Agent population and SD housing example of anylogic
I have tried to use add_people() in an event during running the Agent population and SD housing example of anylogic, in order to add more agents to the model during the simulation but I face this error.
How can I solve this problem?
[Exception…
Elnaz
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Where can I find a proper repository of OpenModelica syntax?
I have been exploring Open Modelica for a week for system Dynamics. All though I learned few basic things(like function and class syntax etc..) from Spoken Tutorial, I need to go a long way. I am not to find a proper source mentioning the syntaxes…
Bharath Ram
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Delay functions in Anylogic System Dynamics
What function in AnyLogic-System Dynamics is equivalent to the Delay3 function in Vensim? The Delay3 function in Vensim is used for material delay (e.g. when goods are delayed by 3 days). The syntax in Vensim is: Delay3(input, delayTime).
I tried…
molamola
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AnyLogic - System Dynamics : how to track stock values correctly?
screenshot of my model
In the basic first order positive feedback model:
(one stock, one flow to it and a parameter gives the flow rate).
There is a stock with initial value of 100, a parameter with the value of 0.1 and the formula of the flow…
Curious Joe
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I can't plot the animation frame in Anylogic and receive the following error. How to solve it?
I am using agent-based simulaiton and system dynamics to make the model for simulation. However, I received the following error sentences but i have no idea how to solve them.
This sentence also appears in the animation frame after…
ksyhdz
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