Basics of a System Flashcards

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1
Q

A System

A

A network of interdependent components and processes

Materials and energy flowing from one component to another

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2
Q

State Variables

A

aka compartments or stocks

part of a system that stores resources (e.g. matter, energy)

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3
Q

Flow

A

aka pathways

how resources move from one compartment to another

throughput: flow of resources into, through, and out of a system.

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4
Q

Open system

A

Receive inputs from the surroundings; produce outputs that leave the system

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5
Q

Closed system

A

no exchange of matter or energy with the surroundings whatsoever

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6
Q

Equilibrium

A

Ideally, systems achieve stable balance over time

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7
Q

Thresholds

A

Systems can also change suddenly due to “tipping points” where rapid change can happen passed certain limits

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8
Q

Feedback Loops

A

systems function in cycles

each component feeding back to influence itself

Types of feedback
1. positive
2. negative

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9
Q

Positive Feedback

A

Increase a process or a component

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10
Q

Negative Feedback

A

Diminishes a process or a component

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11
Q

Dynamic Equilibrium

A

Specific numbers of resources or energy vary but the overall trend is stable

Variation around a stable average

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12
Q

Disturbances

A

Events or activities that interrupt normal feedback loops

Resilient systems return to previous state after distrubance

can lead a system to shift to a new state and become permanently altered

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13
Q

Principle of Emergent Properties

A

When components of varying properties come together to form a system, a new property emerges which was not present in the previous components

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