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Homework answers / question archive / a closed system influenced by its past behavior
a closed system influenced by its past behavior. feedback systems have feedback loop structure that consists of closed paths of cause and effect. they are self-regulating and can be either a positive feedback system or a negative feedback system
a management flight simulator. It consists of a group of players acting as competing fisherman trying to maximize profits. the game passes on to its participants the lessons of tragedy of commons, s-shaped growth, and limits to growth
a situation where a "fix" has immediate positive results b ut eventually makes the problem worse. the underlying structure of the system that caused the problem in the first place does not change.
movement of a quantity from one level to another
a structure that can be applied across different settings due to fundamentally same underlying structures and relationships
behavior that results from a balancing loop which drives a system toward a specified goal. the farther the system from the goal, the quicker it changes towards that goal, the equilibrium homeostasis point, and as it approaches the goal, the growth/decay slows down. associated with negative feedback
a diagram that relates the movement in one variable to movement in another. the input and output variables are placed on the axes of a graph, and the relation plotted
the amount of time it takes for a stock to go halfway towards its goal. it is the converse of doubling time in positive feedback. half-life is approxmiated by 0.7 times the time constant, or 0.7 divided by the decay fraction. associated with goal-seeking behavior
control through the operation of negative feedback loops - it is reached when the goal is attained and stable equilibrium achieved
theoretically, a signal of zero width but finite area. practically, in models, a signal (rate of flow) of specified area lasting for one solution interval and occurring at a specified time