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===== Population =====
[[models:caness:caness_main|CanESS]] > [[caness:Demography]] > Population\\
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The Population calculator contains three procedures: Net Immigration, Evolve Population and School Population.

===(1) Net Immigration ===

^ Inputs           ^ Outputs                          ^
| //emigration//  | //net international immigration// |
| //immigration// |                                   |

The Net Immigration procedure uses //immigration// (person / year) and the //emigration// (person / year) to calculate //net international immigration// (person / year). These variables are specified by region, gender, time and age. The //net international immigration// is passed on to Evolve Population.

===(2) Evolve Population ===

^Inputs ^Outputs^
|//net international immigration//|//deaths//|
|//base population//|//births//|
|//total period fertility//|//actual net international immigration//|
|//births distribution//|//internal movers//|
|//gender shares at birth//|//Canada region population//|
|//mortality//|//Canada total population// |
|//international immigration mobility//| |
|//net immigration share//| |

The evolve population procedure combines information on //net international immigration// (person / year), //base population// (person), //total period fertility// ( / year), //births distribution// ( / year), //gender shares at birth// ( / year), //mortality// ( / year), //international immigration mobility// ( / year), and //net immigration share// ( / year) to generate //deaths// (person / year), //births// (person / year), //actual net international immigration// (person / year), //internal movers// (person / year), and  //Canada region population// (person) by region, gender, time and age. //Canada region population// is passed on to the calculators [[caness:demography:famform|Family Formation]] and [[caness:energyuse:comseceu:comflrspc:comflrspcparb|Commercial Floor Space Population Age Related Buildings]].

It also provides the //Canada total population// (person) by region and time. This variable is passed on to the calculators [[caness:demography:famform|Family Formation]], [[caness:macroeconomy:macroecon|Macro Economics]], [[caness:foodprod:foodbmreq|Food Biomass Requirements]], [[caness:energyuse:streetlighteu|Street Lighting Energy Use]], [[caness:energyuse:transporteu:roadveh:cuveh:cuvehstk|Commercial Use Vehicle Stock]], [[caness:energyuse:comseceu:comflrspc:comflrspctpr|Commercial Floor Space Total Population Related]], [[caness:energyuse:comseceu:comflrspc:comflrspcoffice|Commercial Floor Space Office]], and [[caness:eneryuse:resourceprdeu:biomassprdaeu:munwbmprd|Municipal Waste Biomass Production]].

===(3) School Population ===

^ Inputs ^ Outputs ^
|//Canada region population//|//school age population// |

The school population procedure derives the //school age population// (person) by region and time from the //Canada region population//. This variable is used in the calculator [[caness:energyuse:transporteu:transerdem:passkm|Passenger Kilometers by Mode]].
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[[caness:glossary|CanESS Glossary]]
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