Campbell_Biofuels_Final_Model
7a19a149-2faf-48ad-97bb-121e6093728c
isee systems, inc.
STELLA
2012
2032
0.125
/year
dollars-hectares/hectacre-yr
dollars/hectacre-yr
dollars/kg
dollars/kg-yr
dollars/yr
hectares-kg/hectacre-yr
kg-yr/year
kg/hectacre-yr
kg/person-year
kg/person-yr
kg/year
kg/yr
kilograms/yr
percent infrastructure
percent infrastructure/yr
person/yr
Unspecified Units
0.95
Adoption_Rate
Unitless
0.05
Adoption_Rate
Unitless
0.798
Conversion_between_Crops
Unitless
0.202
Conversion_between_Crops
Unitless
1821540683
Maize_Production
Export
Loss
Seeds_Kept_for_Planting
Comsumption
kilograms
units should be kg/years, unit checker wants it to be hectares-kg/hectare-year, which would cancel out properly
Average_Productivity_of_Land_in_Maize*Arable_Land_in_Maize
kg/yr
Local_Demand*Scarcity_coeff
kg/yr
External_Demand
kg/yr
Ethiopia_Maize_in_Storage*Loss_Rate
kg/yr
4000
kg/hectacre-yr
2500
kg/hectacre-yr
96633458
Births
Deaths
people
Death_Rate*Ethiopia_Population
person/yr
0.0335*Population_Growth_Switch
per year
0.00852*Population_Growth_Switch
per year
37.7
kg/person-year
10655000
hectares
Percent_Land_used_for_Maize*Total_Land_in_Cereals
hectares
(Old_Methods_Production_Rate*Old_Methods)+(New_Methods_Production_Rate*New_Methods)
kg/hectacre-yr
Birth_Rate*Ethiopia_Population
person/yr
Maize_Production/Total_Ethiopian_Demand
0.682539682539683,0.56825396825396801,0.46666666666666701,0.33968253968253997,0.212698412698413,0.041269841269841297,-0.073015873015873006,-0.23174603174603201,-0.51111111111111096,-0.72698412698412695,-1
/year
0.2237
Change_in_Price
dollars/kg
Local_Maize_Price*Fractional_Change_in_Price
dollars/kg-yr
Ethiopia_Maize_in_Storage/INIT(Ethiopia_Maize_in_Storage)
0.20000000000000001,0.16698412698412701,0.14412698412698399,0.121269841269841,0.089523809523809506,0.060317460317460297,0.020952380952381,-0.018412698412698401,-0.047619047619047603,-0.070476190476190498,-0.099682539682539706
/year
Fractional_Change_in_Inventory+Fractional_change_from_local_supply_demand
/year
Ethiopia_Population*Consumption_per_capita
kg/year
Gap/Land_Adjustment_Time
per year
External_Demand+Local_Demand+NonSellable_Seed
kg/year
Average_Farmer's_Revenue_per_hectare_of_Maize/Weighted_Revenue_Per_Hectare
0,0,0,0,0,0.028571428571428598,0.20000000000000001,0.57142857142857095,0.81269841269841303,0.92063492063492103,0.96190476190476204,0.97460317460317503,0.99365079365079401,1,1,1,1,1,1
Unitless
Target_Percentage_of_Land_in_Maize-Percent_Land_used_for_Maize
Unitless
0.298411
dollars/kg
1/Adoption_Process
per year
Ethiopia_Maize_in_Storage/Local_Demand
years
((Ethiopia_Maize_in_Storage-Six_Months_of_Consumption)*Export_Percentage)
kilograms/yr
Years_of_Maize_in_Storage
0,0,0.0253968253968254,0.41587301587301601,0.64761904761904798,0.79682539682539699,0.87301587301587302,0.92380952380952397,0.96507936507936498,0.99047619047619095,1
Unitless
Units should be kg, not kg-year/year
Ethiopia_Population*Consumption_per_capita*Minimum_time_Maize_in_Storage_should_last
kg-yr/year
Transportation_Infrastructure
0.10860317460317501,0.073333333333333306,0.049523809523809498,0.035873015873015897,0.0253968253968254,0.0212698412698413,0.017460317460317499,0.0155555555555556,0.0152380952380952,0.0149206349206349,0.0152380952380952
dollars/kg
Local_Maize_Price+Export_Cost
dollars/kg
Percent_Land_Used_in_other_crops*Total_Land_in_Cereals
hectares
(Wheat_Productivity*Wheat_Percentage)+(Barley_Productivity*Barley_Percentage)+(Teff_Productivity*Teff_Percentage)+(Sorghum_Percentage*Sorghum_Productivity)
kg/hectacre-yr
1002.394
kg/hectacre-yr
2119.205
kg/hectacre-yr
2005.618
kg/hectacre-yr
1596.059
kg/hectacre-yr
0.1775
Unitless
0.4421
Unitless
0.1193
Unitless
0.1671
Unitless
(Wheat_Percentage*Wheat_Price)+(Teff_Percentage*Teff_Price)+(Barley_Price*Barley_Percentage)+(Sorghum_Price*Sorghum_Percentage)
dollars/kg
0.459-INIT(Export_Cost)
Unspecified Units
0.693-INIT(Export_Cost)
dollars/kg
0.458-INIT(Export_Cost)
dollars/kg
0.511-INIT(Export_Cost)
dollars/kg
Units should be kg/year
Arable_Land_in_Other_Cereals*Average_Productivity_of_Land_in_Other_Grains
hectares-kg/hectacre-yr
units should be dollars/yr
Other_Grain_Production*Average_Price_per_kg_of_other_crops
dollars-hectares/hectacre-yr
Average_Price_per_kg_of_other_crops*Average_Productivity_of_Land_in_Other_Grains
dollars/hectacre-yr
((Average_Farmer's_Revenue_per_hectare_of_other_crops*Number_of_other_cereals)+(Average_Farmer's_Revenue_per_hectare_of_Maize))
dollars/hectacre-yr
Local_Maize_Price*Average_Productivity_of_Land_in_Maize
dollars/hectacre-yr
Comsumption/Ethiopia_Population
kg/person-yr
4
Unitless
7
years
Export_Price/Global_Maize_Price
1,1,1,0.99682539682539695,0.99047619047619095,0.97777777777777797,0.97142857142857097,0.95555555555555605,0.87301587301587302,0.736507936507937,0
per year
New_Method_Adoption_Rate
per year
(Export*Export_Price)+(Local_Maize_Price*Comsumption)
dollars/yr
Maize_Production*Percent_Retained_for_Planting
kg/yr
0.1
Unitless
Loss+Seeds_Kept_for_Planting
kg/yr
the units should be years, but I think the if/then/else logic is throwing the unit checker for a loop
IF (Biofuel_Market_Implementation=1)
THEN 1e9-STEP(1e9,Year_of_Implementation)+STEP(Years_to_Implementation, Year_of_Implementation)
ELSE
1e9
years
Transportation_Infrastructure
0.20000000000000001,0.14920634920634901,0.10984126984127,0.077460317460317493,0.064761904761904798,0.058412698412698402,0.0514285714285714,0.044444444444444398,0.040000000000000001,0.036190476190476203,0.0298412698412698
/year
10
years
0
Unitless
2015
Unitless
0
Building_Infrastructure
percent infrastructure
Target_Percent_Infrastructure/Adoption_Process
percent infrastructure/yr
1
per year
0.5
years
1
percent infrastructure
Maize_Production
External_Demand
Revenue_from_other_Crops
Average_Productivity_of_Land_in_Other_Grains
Average_Farmer's_Revenue_per_hectare_of_Maize
Export
Ethiopia_Maize_in_Storage
Export_Cost
Ethiopia_Maize_in_Storage
93
Transportation_Infrastructure
Loss_Rate
Local_Maize_Price
Comsumption
Six_Months_of_Consumption
External_Demand
Local_Maize_Price
Maize_Production
Average_Farmer's_Revenue_per_hectare_of_other_crops
Ethiopia_Population
Average_Price_per_kg_of_other_crops
Export_Price
New_Method_Adoption_Rate
NonSellable_Seed
Local_Maize_Price
Average_Farmer's_Revenue_per_hectare_of_other_crops
Local_Demand
Arable_Land_in_Maize
Fractional_Change_in_Price
Change_in_Price
Export_Cost
Total_Land_in_Cereals
Arable_Land_in_Maize
Seeds_Kept_for_Planting
NonSellable_Seed
Fractional_change_from_local_supply_demand
Fractional_Change_in_Price
Teff_Price
Percent_Land_used_for_Maize
Arable_Land_in_Maize
External_Demand
Total_Land_in_Cereals
Arable_Land_in_Other_Cereals
Adoption_Process
New_Method_Adoption_Rate
New_Methods
Average_Productivity_of_Land_in_Maize
Weighted_Revenue_Per_Hectare
Average_Farmer's_Revenue_per_hectare_of_Maize
Average_Farmer's_Revenue_per_hectare_of_Maize
Weighted_Revenue_Per_Hectare
Loss
Ethiopia_Population
Births
Teff_Productivity
Average_Productivity_of_Land_in_Other_Grains
Transportation_Infrastructure
Loss_Rate
Wheat_Percentage
Average_Productivity_of_Land_in_Other_Grains
Six_Months_of_Consumption
Average_Farmer's_Revenue_per_hectare_of_other_crops
Weighted_Revenue_Per_Hectare
Target_Percentage_of_Land_in_Maize
Target_Percent_Infrastructure
Building_Infrastructure
Adoption_Process
Building_Infrastructure
Minimum_time_Maize_in_Storage_should_last
Six_Months_of_Consumption
Export_Price
Teff_Percentage
Average_Productivity_of_Land_in_Other_Grains
Arable_Land_in_Other_Cereals
Other_Grain_Production
Barley_Percentage
Average_Productivity_of_Land_in_Other_Grains
Land_Adjustment_Time
Conversion_between_Crops
Seeds_Kept_for_Planting
Sorghum_Price
Average_Price_per_kg_of_other_crops
Old_Methods
Average_Productivity_of_Land_in_Maize
Actual_Consumption_Per_Capita
Biofuel_Market_Implementation
Adoption_Process
Total_Ethiopian_Demand
Wheat_Percentage
Average_Price_per_kg_of_other_crops
Export_Price
Export_Percentage
Population_Growth_Switch
Death_Rate
Revenue_from_Maize
Wheat_Productivity
Average_Productivity_of_Land_in_Other_Grains
Average_Farmer's_Revenue_per_hectare_of_Maize
Target_Percentage_of_Land_in_Maize
Teff_Percentage
Average_Price_per_kg_of_other_crops
Scarcity_coeff
Comsumption
Revenue_from_other_Crops
Comsumption
Actual_Consumption_Per_Capita
Gap
Conversion_between_Crops
New_Methods_Production_Rate
Average_Productivity_of_Land_in_Maize
Other_Grain_Production
Revenue_from_other_Crops
External_Demand
Population_Growth_Switch
Birth_Rate
Total_Ethiopian_Demand
Adoption_Rate
Ethiopia_Population
Deaths
Revenue_from_Maize
Export_Percentage
External_Demand
Target_Percentage_of_Land_in_Maize
Gap
Local_Demand
Comsumption
Death_Rate
Deaths
Percent_Land_Used_in_other_crops
Arable_Land_in_Other_Cereals
Years_to_Implementation
Adoption_Process
Other_Grain_Production
Ethiopia_Maize_in_Storage
Loss
Old_Methods_Production_Rate
Average_Productivity_of_Land_in_Maize
Percent_Retained_for_Planting
Seeds_Kept_for_Planting
Barley_Productivity
Average_Productivity_of_Land_in_Other_Grains
Barley_Price
Average_Farmer's_Revenue_per_hectare_of_other_crops
Number_of_other_cereals
Weighted_Revenue_Per_Hectare
Fractional_Change_in_Inventory
Fractional_Change_in_Price
Loss
NonSellable_Seed
Export
Revenue_from_Maize
Sorghum_Price
Consumption_per_capita
Local_Demand
Ethiopia_Maize_in_Storage
Years_of_Maize_in_Storage
Fractional_Change_in_Inventory
Consumption_per_capita
Six_Months_of_Consumption
Export_Cost
Export_Price
Total_Ethiopian_Demand
Global_Maize_Price
Export_Percentage
Local_Demand
Years_of_Maize_in_Storage
Sorghum_Productivity
Average_Productivity_of_Land_in_Other_Grains
Percent_Land_used_for_Maize
Gap
Average_Productivity_of_Land_in_Maize
Maize_Production
Sorghum_Percentage
Average_Productivity_of_Land_in_Other_Grains
Local_Demand
Local_Maize_Price
Change_in_Price
Years_of_Maize_in_Storage
Scarcity_coeff
Average_Productivity_of_Land_in_Maize
Average_Farmer's_Revenue_per_hectare_of_Maize
Revenue_from_Maize
Wheat_Price
Sorghum_Percentage
Average_Price_per_kg_of_other_crops
Fractional_change_from_local_supply_demand
Barley_Percentage
Average_Price_per_kg_of_other_crops
Total_Ethiopian_Demand
Fractional_change_from_local_supply_demand
Birth_Rate
Births
Year_of_Implementation
Adoption_Process
Barley_Price
Average_Price_per_kg_of_other_crops
Maize_Production
Teff_Price
Average_Price_per_kg_of_other_crops
Wheat_Price
Average_Price_per_kg_of_other_crops
Total Annual Revenue
Prices
Prices per Kg
Total Production
Production/Hectare
Outflows
Method Use
Land Allocation
Maize in Storage
0.25
Maize Flux
Prices
Land Use
Biofuels Market Implications
Maize in Storage
Local Price Elasticity
Experimental Controls
Land Conversion
Model Outputs