STELLA Basic Elements

• Stocks

  • act as "accumulators", have an initial value
  • viewed as having some unit
  • are the "nouns" (things) for the system

• Flows

  • provide input/output to the stock
  • have value of unit/time (unit same as stock unit)
  • are the "verbs" for the system

• Converters

  • hold constants or change units
  • can be algebraic or graphical
  • are the "adverbs" or "adjectives"

• Connectors

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