WOLFRAM SYSTEM MODELER
Human_FertilityHuman fertility |
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Diagram
Wolfram Language
In[1]:=
SystemModel["SystemDynamics.WorldDynamics.World3.Human_Fertility"]
Out[1]:=
Information
This model estimates the human fertility factor used by the population dynamics model.
The human fertility factor is dimensionless.
Parameters (8)
| des_compl_fam_size_norm |
Value: 3.8 Type: Real Description: Desired normal complete family size |
|---|---|
| hlth_serv_impact_del |
Value: 20 Type: Real (yr) Description: Health service impact delay |
| income_expect_avg_time |
Value: 3 Type: Real (yr) Description: Income expected average time |
| lifet_perc_del |
Value: 20 Type: Real (yr) Description: Perceived life-time delay |
| max_tot_fert_norm |
Value: 12 Type: Real Description: Normal maximal total fertility |
| social_adj_del |
Value: 20 Type: Real (yr) Description: Social adjustment delay |
| t_fert_cont_eff_time |
Value: 4000 Type: Real (yr) Description: Year of continued fertility change |
| t_zero_pop_grow_time |
Value: 4000 Type: Real (yr) Description: Time to zero population growth |
Connectors (4)
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ind_out_pc |
Type: MassInPort Description: Per capita annual industrial output |
|---|---|---|
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life_expectancy |
Type: MassInPort Description: Average life expectancy of human population |
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serv_out_pc |
Type: MassInPort Description: Per capita annual expenditure in services |
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total_fertility |
Type: MassOutPort Description: Average human fertility |
Components (18)
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Avg_Ind_Out_PC |
Type: SMTH1 Description: p.122 of Dynamics of Growth in a Finite World |
|---|---|---|
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Fam_Income_Expect |
Type: Fam_Income_Expect Description: p.122 of Dynamics of Growth in a Finite World |
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Fam_Resp_To_Soc_Norm |
Type: Tabular Description: p.122 of Dynamics of Growth in a Finite World |
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Del_Ind_Out_PC |
Type: SMTH3 Description: p.119 of Dynamics of Growth in a Finite World |
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Soc_Fam_Size_Norm |
Type: Tabular Description: p.119 of Dynamics of Growth in a Finite World |
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Des_Compl_Fam_Size |
Type: Des_Compl_Fam_Size Description: p.113 of Dynamics of Growth in a Finite World |
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Perc_Life_Expectancy |
Type: SMTH3 Description: p.112 of Dynamics of Growth in a Finite World |
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Compl_Mlt_Perc_Lifet |
Type: Tabular Description: p.112 of Dynamics of Growth in a Finite World |
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Des_Tot_Fert |
Type: Prod_2 Description: p.107 of Dynamics of Growth in a Finite World |
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Fecundity_Mult |
Type: Tabular Description: p.104 of Dynamics of Growth in a Finite World |
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Max_Tot_Fert |
Type: Gain Description: p.104 of Dynamics of Growth in a Finite World |
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Need_For_Fert_Cont |
Type: Need_For_Fert_Cont Description: p.131 of Dynamics of Growth in a Finite World |
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Fr_Serv_Al_Fert_Cont |
Type: Tabular Description: p.132 of Dynamics of Growth in a Finite World |
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Fert_Cont_Al_PC |
Type: Prod_2 Description: p.132 of Dynamics of Growth in a Finite World |
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Fert_Cont_Facil_PC |
Type: SMTH3 Description: p.133 of Dynamics of Growth in a Finite World |
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Fert_Cont_Eff_Table |
Type: Tabular Description: p.133 of Dynamics of Growth in a Finite World |
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Fert_Cont_Eff |
Type: Fert_Cont_Eff Description: p.133 of Dynamics of Growth in a Finite World |
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Total_Fertility |
Type: Total_Fertility Description: p.97 of Dynamics of Growth in a Finite World |
Used in Examples (11)
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SystemDynamics.WorldDynamics.World3 Original WORLD3 model |
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SystemDynamics.WorldDynamics.World3 More abundant non-recoverable natural resources |
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SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources and pollution control |
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SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources, pollution control, and land yield enhancement |
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SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources, pollution control, land yield enhancement, and erosion protection |
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SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources, pollution control, land yield enhancement, erosion protection, and resource efficiency |
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SystemDynamics.WorldDynamics.World3 More abundant non-recoverable natural resources and birth control |
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SystemDynamics.WorldDynamics.World3 More abundant non-recoverable natural resources, birth control, and stable industrial output |
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SystemDynamics.WorldDynamics.World3 Combining the measures of Scenarios #6 and #8 |
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SystemDynamics.WorldDynamics.World3 Influencing the future 20 years earlier |
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SystemDynamics.WorldDynamics.World3 Influencing the future 10 years later |