# AGE SPECIFIC POPULATION GROWTH

## AGE SPECIFIC POPULATION GROWTH

Population Growth

Distribution of the largest urban centers in the world.

Population growth is the change in population over time, and can be quantified as the change in the number of individuals in a population per unit time for measurement. The term population growth can technically refer to any species, but almost always refers to humans, and is often informal use for more specific term demographic population growth rate, and is often used to refer specifically to the growth of the world population.

Simple models of population growth include growth model of Thomas Malthus and logistic model. Theories explaining the modern demographic changes are the theory of the reproductive revolution, supported in longitudinal- studies the theory of demographic transition and the theory of the second demographic transition you -posadas latter studies cross-.1

Population growth rate

In demography, population geography and ecology, population growth or population growth rate (PGR stands for: Population growth rate) is the rate that indicates the growth or decline of the population. Specifically, the population growth rate ordinarily refers to the change in population over a period often expressed as a percentage of the number of individuals in a country or place at the end of one year on the initial population in the same year. It can also refer to the difference between the birth rate of a country minus the rate of mortality data annually in each country through information obtained from the annual number of births and deaths obtained from civil registration of each country. It can be expressed in the formula:

The most common way of expressing population growth is showing it as an arithmetic right, and not as a percentage. The change in population over a period of unity is expressed as a percentage of the population at the beginning of the period.

A positive arithmetic ratio or (rate) of growth indicates that the population is increasing, while a negative growth ratio indicates the population decline. A ratio of zero indicates that growth had the same number of people on the rebound - the net difference between births, deaths and migration is zero. However, a growth rate may be zero even when there are significant changes in birth rates, death rates, rates of immigration and age distribution between the two times. Equivalently, the percentage mortality rate = the average number of deaths in a year for every 100 people in the total population.

A related measure is the net reproduction rate. In the absence of migration a net reproduction rate of more than one indicates that the female population is increasing, while a net reproduction rate of less than one (secondary replacement fertility) indicates that the female population is declining.

Population in balance

Population in balance

It is said that a population is in equilibrium when population growth is zero.

Population growth zero or zero population growth (in English zero population growth) concept is attributed to the American demographer Kingsley Davis although authorship is claimed by George Stolnitz.

However, the concept of equilibrium population is questionable in itself, nor the idea of the growth rate of 0 can stay for a period, although this is relatively short. First, in a country where mortality equaled the birth would not mean that the composition of the population (age and sex) remain the same, as it would tend to be aged, unless that country has a higher rate of immigration to emigration, in which case the composition of the immigrant population would be a factor rejuvenation of the population and immigrants of both sexes in a country usually young adults, age of childbearing, and this makes your rate birth is higher than the one with the native population, with an average age much higher and, therefore, with a higher mortality immigrant population.

## Alternative Solution

Alternative Solutions

For alternative solutions are valid and must be operational and specific, i.e. they can run effectively, allowing us to achieve the expected results.

It is a common mistake in many responsible for an operation or project that they try to solve a problem with approaches or options that are vague or utopian, to cite some examples:

"Someone to do something"

We are not telling the person responsible for dealing with the problem, nor indicating precisely what has to be done. It's amazing to see even meeting minutes where you hear how are you are reflected in agreements without leaving clear and explicit what has to be done and who needs to do what, which at the next meeting or event see that someone was not clear and therefore no specific action is not take.

"We must improve communication"

We can improve many things, one of which can be communication, but we have to indicate what needs to be improved within the broad front that can be communication. Do we have to change or improve the environment? The message? Partners? What is that we want to convey? Etc.

"We should better motivate people"

That can be a good or a simple desire because we can always be thinking about how to improve the motivation of people, so we are not stating anything special, starting by defining what are the problems in motivation and what they are expected to do to improve motivation.

"Put the best means to cope"

A phrase that says nothing in particular, it is understood that all persons responsible for the organization itself are trying their best to solve various business problems, so be careful with phrases that look nice but that basically do not say anything concrete.

"We must establish a commission to address the issue"

Some meetings when they reach a particular decision problem tend to get rid of the problem by commissioning the issue to an undefined entity that can be a commission to be set up to deal with it; again something not operational or concrete.

Another typical error of this process of generating alternative solution is to propose alternatives that happen to be decision criteria such as:

Profitability care

Meet the needs of customers

Reduce costs, etc.

Nobody can be any doubt that whatever we do we have to do caring profitability, improving indicators, addressing the needs of customers, reducing costs, improving the work environment, etc., so we are not proposing alternatives lead us to a solution.

While it is clear and obvious these examples do not surprise us that we can find such alternatives as a result of a diagnosis or plan of action for solving a problem, so be very careful and learn to detect and correct such error in this process.