GEOG 309 Lecture Notes - Food Security, Infant Mortality, Dependency Ratio

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yellowarmadillo977

5 Apr 2012

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Demography: the statistical study of human populations including, density, growth, migration and socio-economic characteristics. Population increases at around 300 000 per year. This is because most of canada lies outside of agricultural territory. Major concentration along southern border with the usa. From 1901 to 2006, population has increased from 37% to 80% urban. 60% of population lives between windsor and quebec city. 39% of population lives in southern canadian regions (from coast to coast) Moving northward, you have 1% of the population. Followed by less than 1% in the more inhospitable areas. Quebec city, ottawa, montreal, toronto, three-rivers, london, windsor. Population increase: natural increase + net migration over a given period. Population growth: increase is expressed as a rate (% change over time) Rate of natural increase: is crude birth rate crude death rate (cbr-cdr) Crude birth rate: the number of live births per 1,000 people in a given year.

Related Questions

The fish population P(t) in a lake is suddenly attacked by adisease that render the fish unable to reproduce. Assuming that thedeath rate of the fish is inversely proportional to the square rootof the fish population (i.e. k1 = Î²/â(P) where Î² is aconstant), perform the following tasks:

1. Write a differential equation that models the population offish as a function of time. Assume that the fish are infected bythe disease at t = 0 and define your constants.

2. Solve the differential equation with the initial condition thatP(0) = P0.

3. What is the half-life of the fish population?

4. If there were 900 fish initially, and 441 are left after 6weeks, how long does it take for all the fish to die? Assume thatthe disease was caused by radioactive waste dumped in the lake. Itis discovered that another population of fish, S(t), spontaneouslymutate into the original fish at a rate of k2 (per week) and neverdie. The population S(t) are born at a rate k3.

5. Draw a diagram that describes the life cycle of these twofish populations including your rate constants.

6. Write the differential equations describing the populationsof P(t) and S(t).

Express each of the following in scientific notation:

(a) 0.000851 g

(b) 38,041,430 (population of California)

(d) 313,914,040 (U.S. population)

harlequinsquirrel990

George Smits owns George's Joint, a gas station and convenience store. George is trying to get a better understanding of his business and wants to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons of gasoline sold follows a normal distribution with a population standard deviation of 2.3 gallons. From these records, he randomly selects 60 sales and finds the mean number of gallons sold is 8.6

What is the point estimate of the population mean?

silverbeaver496

GEOG 309 Lecture Notes - Food Security, Infant Mortality, Dependency Ratio

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