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post_model_analysis [2020/04/26 05:40] – matszpost_model_analysis [2022/11/07 10:23] (current) – external edit 127.0.0.1
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 ======Post model analysis====== ======Post model analysis======
-=====Dual analysis (T. Jansson)=====+=====Dual analysis=====  
 +''T. Jansson''
  
 ====Constrained optimisation background==== ====Constrained optimisation background====
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 A key element in analysing policy changes from an economic viewpoint is to look at welfare changes. The “classical” elements of a welfare analysis are changes in consumer and producer rents and for the tax payer. That concept is also followed in CAPRI. A key element in analysing policy changes from an economic viewpoint is to look at welfare changes. The “classical” elements of a welfare analysis are changes in consumer and producer rents and for the tax payer. That concept is also followed in CAPRI.
  
-For consumers, CAPRI uses the money metric concept. It can be broadly understood as a measurement for changes in the purchasing power of the consumer. The concept is also linked to the expenditure function as introduced in Section [[Market module for agricultural outputs#Behavioural equations for final demand]]:+For consumers, CAPRI uses the money metric concept. It can be broadly understood as a measurement for changes in the purchasing power of the consumer. The concept is also linked to the expenditure function as introduced in Section [[scenario simulation#Behavioural equations for final demand]]:
  
 \begin{equation} \begin{equation}
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 Where //e//(.) is the expenditure function, \(Y^r\) is expenditure in the reference situation, and \(cpri^r (cpri^s)\) is the price vector in the reference (scenario) situation. The money metric is thus the expenditure the consumer would need at reference prices to be as well of as if facing the scenario prices at reference income. The difference of money metric for a given scenario to money metric in the reference situation is the equivalent variation.  Where //e//(.) is the expenditure function, \(Y^r\) is expenditure in the reference situation, and \(cpri^r (cpri^s)\) is the price vector in the reference (scenario) situation. The money metric is thus the expenditure the consumer would need at reference prices to be as well of as if facing the scenario prices at reference income. The difference of money metric for a given scenario to money metric in the reference situation is the equivalent variation. 
-Considering the generalised Leontief form of the indirect utility function used in CAPRI (compare with Section [[Market module for agricultural outputs#Behavioural equations for final demand]]) we get +Considering the generalised Leontief form of the indirect utility function used in CAPRI (compare with Section [[scenario simulation#Behavioural equations for final demand]]) we get 
  
 \begin{align} \begin{align}
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 ====Energy assessment in CAPRI==== ====Energy assessment in CAPRI====
  
-To integrate the methodology which is described in Chapter [[Farm Structure Units – FSU#Delineation]] into CAPRI, two parts are required for each single energy input component: an activity-specific, regionalized consumption quantity and an equivalent assessment factor. The following chapters present both parts for each input component integrated into CAPRI.+To integrate the methodology which is described in Chapter [[spatial_dis-aggregation_capdis_module#Delineation]] into CAPRI, two parts are required for each single energy input component: an activity-specific, regionalized consumption quantity and an equivalent assessment factor. The following chapters present both parts for each input component integrated into CAPRI.
  
 ===Direct energy sources=== ===Direct energy sources===
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 **Figure 41: Energy parameters: examples for results displaying** **Figure 41: Energy parameters: examples for results displaying**
  
-{{::figure_41_1.png?600|Example 1: Energy consumption - overview}} +{{::figure_41_1.png?600|}} 
-{{::figure_41_2.png?600|Example 2: Energy consumption - detailed}} + 
-{{::figure_41_3.png?600|Example 3: Energy parameters with reference to the product}} +Example 1: Energy consumption - overview 
-{{::figure_41_3.png?600|Example 4: Energy parameters: Sectoral balances ;Source: CAPRI Modelling System}}+ 
 +{{::figure_41_2.png?600|}} 
 + 
 +Example 2: Energy consumption - detailed 
 + 
 +{{::figure_41_3.png?600|}} 
 + 
 +Example 3: Energy parameters with reference to the product 
 + 
 +{{::figure_41_3.png?600|}} 
 + 
 +Example 4: Energy parameters: Sectoral balances ;Source: CAPRI Modelling System
  
 Taking Example 1, the results of the energy consumption overview table are shown. This can be explored within the scenario exploitation table. Beside “Total MJ”, which indicates energy consumption per ha or head, a number of energy consumption categories such as diesel, electricity, machinery, fertiliser, young animals, seed and plant protection can be displayed either on a MJ basis or in metric units. Furthermore as can be seen in Example 2, detailed data on energy consumption can be displayed if required. Data on feeding stuff, housing systems, grassland use, tillage systems, machinery use, irrigation, greenhouse use, seed, plant protection, drying etc. can be shown activity- and region specific. Beside regarding the area or the animal, the product can be chosen as a reference point. As shown in Example 3, energy requirements per kg of product (expressed in MJ/kg) and domestic en-ergy efficiency (expressed in MJ/MJ) can be shown. On a sectoral basis, efficiency related to the in-come (expressed in MJ/€) is displayed. A sectoral balance can be extracted as shown in Example 4 summing up all energy requirements and all energy output. Taking Example 1, the results of the energy consumption overview table are shown. This can be explored within the scenario exploitation table. Beside “Total MJ”, which indicates energy consumption per ha or head, a number of energy consumption categories such as diesel, electricity, machinery, fertiliser, young animals, seed and plant protection can be displayed either on a MJ basis or in metric units. Furthermore as can be seen in Example 2, detailed data on energy consumption can be displayed if required. Data on feeding stuff, housing systems, grassland use, tillage systems, machinery use, irrigation, greenhouse use, seed, plant protection, drying etc. can be shown activity- and region specific. Beside regarding the area or the animal, the product can be chosen as a reference point. As shown in Example 3, energy requirements per kg of product (expressed in MJ/kg) and domestic en-ergy efficiency (expressed in MJ/MJ) can be shown. On a sectoral basis, efficiency related to the in-come (expressed in MJ/€) is displayed. A sectoral balance can be extracted as shown in Example 4 summing up all energy requirements and all energy output.
post_model_analysis.1587879652.txt.gz · Last modified: 2022/11/07 10:23 (external edit)
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