Presentation - Weather-Chaos Group - University of Maryland

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Introduction HANDY: Human And Nature DYnamics Scenarios Summary and Conclusions An Overview of HANDY HANDY Equations and Parameters Equilibrium Values and the Carrying Capacity Consumption Rates in HANDY ◮ Consumption rates are given by ⎧ ( C P = min ⎪⎨ ⎪⎩ C R = min 1, ( 1, ) w sx P w th ) (4) w κsx R w th ◮ s: Consumption rate per capita, AKA the “Subsistence Salary” ◮ w th : a “Threshold” value for wealth below which famine starts, determined by the Rich w th = ρx P + κρx R . (5) ◮ ρ: minimum required consumption per capita Safa Motesharrei, Jorge Rivas, Eugenia Kalnay HANDY
Introduction HANDY: Human And Nature DYnamics Scenarios Summary and Conclusions An Overview of HANDY HANDY Equations and Parameters Equilibrium Values and the Carrying Capacity Death Rates in HANDY ◮ α R and α P : Death rates for the Rich and the Poor ⎧ ⎪⎨ ⎪⎩ ( α P = α m + max 0, 1 − C ) P (α M − α m ) sx ( P α R = α m + max 0, 1 − C ) R (α M − α m ) sx R ◮ α m : Minimum (Normal) death rate ◮ α M : Maximum death rate, prevails when w = 0 ◮ α R and α P can be equivalently expressed in terms of w w th (6) Safa Motesharrei, Jorge Rivas, Eugenia Kalnay HANDY
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Presentation - Weather-Chaos Group - University of Maryland

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