WOLFRAM SYSTEMMODELER

Life_Expectancy

Life expectancy

Diagram

Wolfram Language

In[1]:=
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SystemModel["SystemDynamics.WorldDynamics.World3.Life_Expectancy"]
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Information

This model computes the average life expectancy of the human inhabitants of this planet as a function of their living conditions.

The life expectancy is measured in numbers of years.

This model is described on p.61 of Dynamics of Growth in a Finite World.

Public Parameters (3)

hlth_serv_impact_del

Value: 20

Type: Real (yr)

Description: Health services impact delay

life_expect_norm

Value: 28

Type: Real (yr)

Description: Normal life expectancy

subsist_food_pc

Value: 230

Type: Real (kg/yr)

Description: Available per capita food

Connectors (6)

life_expectancy

Type: MassOutPort

Description: Average life expectancy of human population

serv_out_pc

Type: MassInPort

Description: Per capita annual expenditure in services

ind_out_pc

Type: MassInPort

Description: Per capita annual industrial output

population

Type: MassInPort

Description: Population

food_pc

Type: MassInPort

Description: Per capita annually consumed food

ppoll_index

Type: MassInPort

Description: Persistent pollution index

Components (13)

Life_Expectancy

Type: Prod_5

Life_Expect_Norm

Type: Const

Lifet_Mult_Hlth_Serv

Type: Lifet_Mult_Hlth_Serv

Description: p.76 of Dynamics of Growth in a Finite World

Lifet_Mlt_Hlth_Serv_1

Type: Tabular

Description: p.76 of Dynamics of Growth in a Finite World

Lifet_Mlt_Hlth_Serv_2

Type: Tabular

Description: p.76 of Dynamics of Growth in a Finite World

Eff_Hlth_Serv_PC

Type: SMTH1

Description: p.71 of Dynamics of Growth in a Finite World

Hlth_Serv_Al_PC

Type: Tabular

Description: p.70 of Dynamics of Growth in a Finite World

Lifet_Mlt_Crowd

Type: Lifet_Mlt_Crowd

Description: p.90 of Dynamics of Growth in a Finite World

Crowd_Mult_Ind

Type: Tabular

Description: p.90 of Dynamics of Growth in a Finite World

Fr_Pop_Urban

Type: Tabular

Description: p.88 of Dynamics of Growth in a Finite World

Lifet_Mlt_Food

Type: Tabular

Description: p.66 of Dynamics of Growth in a Finite World

Gain1

Type: Gain

Lifet_Mlt_PPoll

Type: Tabular

Description: p.94 of Dynamics of Growth in a Finite World

Used in Examples (11)

Scenario_11

SystemDynamics.WorldDynamics.World3

Influencing the future 10 years later

Scenario_10

SystemDynamics.WorldDynamics.World3

Influencing the future 20 years earlier

Scenario_9

SystemDynamics.WorldDynamics.World3

Combining the measures of Scenarios #6 and #8

Scenario_8

SystemDynamics.WorldDynamics.World3

More abundant non-recoverable natural resources, birth control, and stable industrial output

Scenario_7

SystemDynamics.WorldDynamics.World3

More abundant non-recoverable natural resources and birth control

Scenario_6

SystemDynamics.WorldDynamics.World3

More accessible non-recoverable natural resources, pollution control, land yield enhancement, erosion protection, and resource efficiency

Scenario_5

SystemDynamics.WorldDynamics.World3

More accessible non-recoverable natural resources, pollution control, land yield enhancement, and erosion protection

Scenario_4

SystemDynamics.WorldDynamics.World3

More accessible non-recoverable natural resources, pollution control, and land yield enhancement

Scenario_3

SystemDynamics.WorldDynamics.World3

More accessible non-recoverable natural resources and pollution control

Scenario_2

SystemDynamics.WorldDynamics.World3

More abundant non-recoverable natural resources

Scenario_1

SystemDynamics.WorldDynamics.World3

Original WORLD3 model