Glossary of Terms and Abbreviations         

Abroad Settlers
Those who settle Abroad after migration from Rural areas. (European simulation)

Abroad Settlers Fertility
The number of female children born each year to women in the Abroad Settlers population. (European simulation)

Abroad Settlers Survival
Abroad Settlers survival rates, by age and sex. (European simulation)

Abroad Voyagers Fertility
The number of female children born to women in the captive population of Abroad Voyagers during the year of their voyage from Europe to joining the Settlers Abroad population. (European simulation)

Abroad Voyagers Survival
Survival rates of voyagers, by age and sex, during the year of their voyage from Europe to joining the Abroad Settlers population. (European simulation)

Births
Number of male and female births in a population in a five-year period.

CBR
Crude birth rate per year (births divided by midpoint population), calculated for the last five-year period.

CDR
Crude death rate per year (deaths divided by midpoint population), calculated for the last five-year period.

CGR
Crude growth rate (births. (See LRCGR))

CnBR
Crude net birth rate per year (births divided by midpoint population, accounting for in- and out-migration), calculated for the last five-year period.

CnDR
Crude net death rate per year (deaths divided by midpoint population, accounting for in- and out-migration), calculated for the last five-year period.

CRND
Crude rate of net decrement per year (deaths plus out-migrants, divided by midpoint population), calculated for the last five-year period.

CRNI
Crude rate of natural increase per year (births less deaths, divided by midpoint population).

CRNM
Crude rate of net migration per year (in-migrants less out-migrants, divided by midpoint population), calculated for the last five-year period..

CRnNI
Crude rate of net natural increase per year (births less deaths, divided by midpoint population, accounting for in- and out-migration).

Captive Abroad Surv File
Data file: survival rates for Captives abroad.

Captive African Surv File
Data file: survival rates for Captives in Africa.

Captives
Persons taken by capture from the Source population, in the year of their existence until they become Domestics, Exports, or die.

Captors Fert File
Data file: fertility rates for Captors.

Captors File (Population)
Data file: initial population for Captors.

Captors Surv File
Data file: survival rates for Captors.

Capture Size File
Data file: proportions of Source population captured, by age and sex.

CaptureInterval
Run parameter: "1" means capture takes place every year; "2" means capture takes place in the first five-year period but not in the second five-year period, etc.

Current population
Calculated population: population in the current period, by age and sex.

Criterion Variables
Variables selected as indicating overall impact of slave trade on African population. See Export Ratio, Growth Rate, and Sex Ratio.

Deaths
Number of deaths in a population in a five-year period.

Departure Size
The proportion of persons departing from the Source population, for each age and sex group. (European simulation)

Domestic Fert File
Data file: fertility rates for Domestics.

Domestic Surv File
Data file: survival rates for Domestics.

Expectation of life at birth
Same as average age at death - reflected in the proportion of old to young persons. It is very close to the average age of persons living.

Export Fert File
Data file: fertility rates for Exports.

Export Ratio
Criterion Variable: New Exports as a fraction of current Regional population.

Export Surv File
Data file: survival rates for Exports.

GroupPop
Population of any group, by age and sex.

Growth Rate
Average annual growth rate of Regional population.

Home populations
Two home populations are assumed, Home 1 and Home 2. Each population has its birth and death rates, by age and sex. (Basic model)

Home Voyagers Fertility
The number of female children born to women in the captive population of Home Voyagers during the year of their voyage from the Rural to the Urban Settlers populations.

Home Voyagers Survival
Survival rates of voyagers, by age and sex, during the year of their voyage from the Rural population to their joining the Urban Settlers population or their boarding Atlantic ships. (Basic model)

Initial population
Population of Source and Captor groups at the beginning of the simulation.

In-migrants
Persons entering a population other than by birth during a five-year period.

LRCGR
Crude birth rate, calculated over the full period of the simulation. (See CGR)

Mid-Period Pop
Calculated population: the population of a group in the middle of a five- year period.

Migrant Selection 1
(Basic model)

Migrant Selection 2
(Basic model)

Migration
Migration, for humans, is the movement of individuals from one place to another and from one population to another. (Basic model)

Net Births
Births in a population in a five-year period, accounting for births to in- migrants and out-migrants.

Net Deaths
Deaths in a population in a five-year period, account for deaths among in- migrants and out-migrants.

Net Mid-Period Pop
Estimated population of a group in the middle of a five-year period.

New Abroad Export Fert File
Data file: fertility rates for New Abroad Exports.

New Africa Export Fert File
Data file: fertility rates for New Africa Exports.

New Domestics Fert File
Data file: fertility rates for New Domestics.

NumberPeriods
Run parameter. The number of five-year periods for which the simulation runs. Default is 8 periods, or 40 years.

Out-migrants
Persons leaving a population other than by death during a five-year period.

OutputInterval
Run parameter. The interval at which simulation output is printed. Default is 8 periods (40 years). If you set the output interval at 4, the simulation will print output after 4 periods (20 years) and again at 8 periods (40 years), etc.

Partition
The proportion of voyagers, for each age and sex group, that crosses the Atlantic to become Abroad Settlers. The remainder remains in Europe to become Urban Settlers.

Partition File
Data file. The proportion of Captives (by age and sex) retained as slaves in Africa; the remainder of Captives are sent to become Exports.

Population pyramid
Population pyramids show the size, age and sex distribution of populations. They show a census of the population at a moment in time.

Regional Population
The total estimated African population during a five-year period, calculated as the total of Source, Captor and Domestic populations.

Return migration
Selection of migrants from Homeland Settlers or Abroad Settlers to return to their Home population.

Rural Fertility
The number of female children born each year in the Rural population to women in each five-year group from ages 15 to 49. Male births are assumed to be 1.03 times female births.

Rural Population
The Rural population, by age and sex. The total population is taken to be 100.0 females and a slightly smaller number of males. (European simulation)

Rural Survival
Rural survival rates, by age and sex. (European simulation)

Secondary migration
Selection of migrants from Homeland Settlers or Abroad Settlers to migrate further - either changing location or changing status. (Basic model)

Settler populations
Two settler populations, Home 2 Settlers and Abroad Settlers, are created through the migration of individuals from the Home 1 population. (Basic model)

Sex Ratio
Criterion Variable: Males 20-59 as a fraction of females 15-44 in Slave Society.
Slave Society
Population: the total of Captors and Domestics at any time -- the African slave owners, their families and their slaves.

Source Fert File
Data file: fertility rates for the Source population.

Source File (Population)
Data file: initial population for Sources.

Source Surv File
Data file: survival rates for the Source population.

Stable population
Calculated population: the population of the Source and Captor populations that would have existed if there were only normal births and deaths, and no capture or other migration.

Stage 1 of transit, within homeland
(Basic model)

Stage 2 of transit, abroad
(Basic model)

Standardized adult sex ratio
Males 20-59 as a fraction of females 15-44. A measure of the ratio of marriageable males to marrigeable females, standardized to equal 1.0 in the initial Source and Captor populations.

Urban Fertility
The number of female children born each year to women in the Urban population. Otherwise as indicated above. (European simulation)

Urban Population
The Urban Population, by age and sex. The total population is taken to be 33.0 females and a slightly smaller number of males. (European simulation)

Urban Settlers
Those who settle in Urban areas of homeland after migration from Rural areas. (European simulation)

Urban Settlers Fertility
The number of female children born each year to women in the Urban Settlers population. (European simulation)

Urban Settlers Survival
Urban Settlers survival rates, by age and sex. (European simulation)

Urban Survival
Urban survival rates, by age and sex. (European simulation)

Voyagers
(Basic model)