Causal Loop Diagram - the Department of Computer Science!

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Examples of Stocks• Water in a tub orreservoir• People of different types– { Susceptible,infective, immune}people– Pregnant women– Women between theage of x and y– High-risk individuals• Healthcare workers• Medicine in stocks• Money in bank account• CO 2 in atmosphere• Blood sugar• Stored Energy• Degree of belief in X• Stockpiled vaccines• Goods in a warehouse• Beds in an emergencyroom• Owned vehicles
Changes to State: Flows (“Fluxes”)• These are always associated with rates• If these flow out of or into a stock thatkeeps track of things of type X, the ratesare measured in X/Unit Time (e.g.person/year)• Typically measure by accumulating peopleover a period of time– E.g. Incidence Rates is calculated byaccumulating people over a year
Page 5 and 6: Consider A → B• We are reasonin
Page 7 and 8: Tips• Variables will often be nou
Page 9 and 10: Example 2• Ambiguous Link: Someti
Page 11 and 12: Feedback Loops• Loops in a causal
Page 13 and 14: Example “Balancing Loops”• Ba
Page 15 and 16: Best Practice:Indicating (Pronounce
Page 17 and 18: Classic FeedbacksSusceptibles -+Con
Page 19 and 20: Example Vicious/Virtuous Cycles•
Page 21 and 22: More Elaborate DiagramsKaranfil, 20
Page 23 and 24: Causal Loop Structure :Dynamic Impl
Page 25 and 26: CL Dynamics: Goal Seeking(Balancing
Page 27 and 28: Growth and Plateau• Loop structur
Page 29 and 30: Measles & Mumps in SKDepartment of
Page 31 and 32: Three STIs: Test Volume vs CaseCoun
Page 33 and 34: Cases and Contact Tracing6000500040
Page 35 and 36: Broadening the Model Boundaries:End
Page 37 and 38: Examples of Policy Resistance- Cutt
Page 39 and 40: Slides Adapted from External Source
Page 41 and 42: Unclear VariablesVariables Lacking
Page 43 and 44: Refining a Diagram• It takes time
Page 45 and 46: Polarity• A → + B Does not mean
Page 47 and 48: Critical: Notion of “Increase”
Page 49 and 50: Artifactual Loop 2
Page 51: State of the System: Stocks(Levels,
Page 55 and 56: Flows 2• May be measured by total
Page 57 and 58: 109.5Flow Impact on StockFlow2,0001
Page 59 and 60: Delayed Impact
Page 61: Slides Adapted from External Source

Causal Loop Diagram - the Department of Computer Science!

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