Question

Explain how does the system dynamics use a particular diagramming notation for stocks and flows and draw the figure of stock and flow structure of task in project phase (250 word pllz)

Answer 1

Stocks and flow diagrams go beyond the simple analysis and the visualization structure of the feedback. A stock and flow diagram is a technique that visually distinguishes between the parts of the system and what causes them to change, precise quantitative specification of all system parts and their interactions and simulation of the behavior of the system.

The stocks and flow diagrams are all about the visual languages with casual loops. The 6 main distinguishing features of the stock and flow diagrams are-

1. Stocks

2. Flows

3. Converters

4. Connecters

5. Sources

6. Sinks

Stocks- A stock is a part of the system whose values depend on the past behaviors of the system, at a particular instance of time. We have to measure how it changes at every instance, and adding up all the changes. Example- While you are driving a car. Suppose you have started driving at 8 am and you want to check how far have you driven at 10 am. You can check the speeds at each time intervals and the distance you have covered till now. In this example, the distance you have driven is the stock. Odometer(Car speed meter) is the measurement of your stock. Stocks are always represented by Rectangles on diagrams.

Flows- Flows are the rate at which the stocks are changing. In the above example, it’s the velocity of the car that changes its Stock. Velocity is the acceleration or deceleration. Flows are always represented as small valves attached to the flow pipes in the diagram.