WOLFRAM SYSTEMMODELER

Service_Sector_Investment

Investments in the service sector

Diagram

Wolfram Language

In[1]:=
Click for copyable input
SystemModel["SystemDynamics.WorldDynamics.World3.Service_Sector_Investment"]
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Information

This model calculates the capital invested in the service sector.

Whereas the earlier WORLD2 model lumped all capital investment into a single state variable from which it then split off the percentage of capital invested in the agricultural sector as a second state variable (a funny choice for a state variable, since percentages don't accumulate), the more modern WORLD3 model differentiates between capital invested in industry, capital invested in the service sector, capital invested in agriculture, and other capital investment.

The service capital is measured in U.S. dollars.

Public Parameters (6)

t_policy_year

Value: 4000

Type: Real (yr)

Description: Year of policy change

p_avg_life_serv_cap_1

Value: 20

Type: Real (yr)

Description: Default average life of service sector capital

p_avg_life_serv_cap_2

Value: 20

Type: Real (yr)

Description: Controlled average life of service sector capital

p_serv_cap_out_ratio_1

Value: 1.0

Type: Real (yr)

Description: Default fraction of service sector output ratio

p_serv_cap_out_ratio_2

Value: 1.0

Type: Real (yr)

Description: Controlled fraction of service sector output ratio

service_capital_init

Value: 144000000000.0

Type: Real (dollar)

Description: Initial service sector investment

Connectors (7)

population

Type: MassInPort

Description: Population

capital_util_fr

Type: MassInPort

Description: Capital utilization fraction

industrial_output

Type: MassInPort

Description: Annual industrial output

ind_out_pc

Type: MassInPort

Description: Per capita annual industrial output

serv_out_pc

Type: MassOutPort

Description: Per capita annual expenditure in services

service_capital

Type: MassOutPort

Description: Total capital invested in service sector

s_fioa_serv

Type: MassOutPort

Description: Fraction of total investments allocated to the service sector

Components (18)

Source1

Type: Source

Serv_Cap_Invest

Type: RRate

Description: p.230 of Dynamics of Growth in a Finite World

Service_Capital

Type: Level

Description: p.230 of Dynamics of Growth in a Finite World

Serv_Cap_Deprec

Type: RRate

Description: p.231 of Dynamics of Growth in a Finite World

Sink1

Type: Sink

Serv_Cap_Inv

Type: Prod_2

Description: p.230 of Dynamics of Growth in a Finite World

Serv_Cap_Dep

Type: Division

Description: p.231 of Dynamics of Growth in a Finite World

S_Avg_Life_Serv_Cap

Type: S_Avg_Life_Serv_Cap

Description: p.231 of Dynamics of Growth in a Finite World

Service_Output

Type: Service_Output

Description: p.231 of Dynamics of Growth in a Finite World

S_Serv_Cap_Out_Ratio

Type: S_Serv_Cap_Out_Ratio

Description: p.232 of Dynamics of Growth in a Finite World

S_FIOA_Serv

Type: S_FIOA_Serv

Description: p.229 of Dynamics of Growth in a Finite World

P_Fr_IO_Al_Serv_1

Type: Tabular

Description: p.229 of Dynamics of Growth in a Finite World

P_Fr_IO_Al_Serv_2

Type: Tabular

Description: p.229 of Dynamics of Growth in a Finite World

Div1

Type: Division

Description: p.229 of Dynamics of Growth in a Finite World

S_Indic_Serv_PC

Type: S_Indic_Serv_PC

Description: p.227 of Dynamics of Growth in a Finite World

P_Indic_Serv_PC_1

Type: Tabular

Description: p.227 of Dynamics of Growth in a Finite World

P_Indic_Serv_PC_2

Type: Tabular

Description: p.227 of Dynamics of Growth in a Finite World

Serv_Out_PC

Type: Division

Description: p.232 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