Essay on The Effects of Population Density and Noise - Psy 460

Introduction The purpose of this experiment was to test the effects that different sound barrier materials (foam, fiberglass, and cork) had on sound absorption at varying frequency levels. It was hypothesized that foam would be able to absorb the most sound for all frequency levels. Sound is the mechanical disturbance from a state of equilibrium that propagates though an elastic material medium, which was air in this project. (1) Air is considered an elastic medium because it tends to return to its original shape after being deformed through the application of force, which were the sound waves in this experiment.

Territoriality is the desire and ability of legitimate users of a certain area to lay claim to it. This element of CPTED is considered the most important. This element of defensible space means that property and/or buildings are owned by an individual(s) and nobody else can claim it. Residents, owners, and others including offenders recognize the ownership and they make decisions with this knowledge. Territoriality can be either symbolic or real. Symbolic territoriality is landscape, signs, etc.

The United States is the third most populated country in the world. This country holds about 4.5% of the world’s population. The U.S. population is currently estimated to have 308.7 million persons. This number is more than double of the population from 1950. Besides the fact of the population has doubled its size, the population has also become qualitatively different from the one from 1950. As noted by the Population Reference Bureau, “The U.S. is getting bigger, older, and more diverse.” The growth of the population is the result of the trends over time in the relationship of increased births, decreased deaths, and increased net immigration.

It is better to put a soundproof enclosure around a noisy machine than to expect everyone who might be exposed to the machine's noise to wear hearing protection for example compressors.

The United States of America experienced a nearly one percent population growth rate in 2014 (Lafayette Parish, Louisiana). This growth rate is higher in comparison to Britain, France, and other first world countries. To many, this statement is not surprising. There is always an exaggerated news story about the increasing number of people immigrating to America and how it affects the country. Each woman in America is replacing herself and her spouse by giving birth to an average of nearly two babies in her lifetime (Louisiana). As America grows, more and more people migrate to cities because, generally, living in a city provides an easier life. Cities have plentiful jobs, more housing, and a multitude of places to shop and to eat. Cities also

There are over ten major factors affecting population density. For the physical factors, low land which is flat (e.g. Ganges Valley) is densely populated while high land with rugged relief and high plateau is sparsely populated (e.g. Himalayas). Areas rich in resources (e.g. minerals, oil, wood, fishing etc.) tend to tend to have higher population density (e.g. Western

Noise is one of the most widespread causes of hearing loss, and the most likely causes of occupational illnesses in the United States (Leigh 728). Acute or prolonged exposure to high-level, impulsive noise is an ongoing problem for the military and defense forces all over the world (Sliwinska-Kowalska and Adrian Davis 274). One shot from a big caliber firearm, perceived at a close range, may permanently or temporarily damage an individual hearing in an instant. Additionally, repeated exposures to noisy machinery may, over an extensive period of time, impose serious risks to human hearing. According to the report released by National Institute on Deafness and Other Communication Disorders (NIDCD); ten million Americans have already suffered permanent hearing damage from noise and thirty to fifty million individuals are exposed to hazardous noise levels every day (Leigh 728). Many hearing illness in the police service originate from the noise caused by gunshots. As a result of increased cased of hearing problem, mainly in the police service, many scholars have engaged in research in order to get appropriate mean to control these problem. Considering the increasing investigation from military groups for vital information on how to protect from impulse noise, it is vital to explore health effects associated with impulse noise from gunshots. This study explores the effects on hearing caused by

Each month, in developing countries, five million people have access to the cities. The trend towards concentration in some developed countries like the US is clamorous: 243 million Americans are concentrated in urban 3% of the country.

Population Growth: Density dependent factors Abstract Sets of experiments were used to assess the growth rate of the Lemna minor, a duckweed population. The growth of Lemna minor was observed and followed by counting and recording the number of thalli on a weekly basis. These experiments were constructed lab models which varied the size of the starting thalli population, and varied the nutrient concentration the thali were placed in. In the first experimental model two plastic cups were prepared with pond water, then two healthy lemna minor plants were placed in the first cup while fifteen healthy lemna minor plants were placed in the second cup. The second experimental model consisted of four nutrient concentrations, a control model of no nutrients, a low nutrient model, a medium nutrient model and a high nutrient model. At high density populations, we observed a nonlinear decreasing growth rate with increasing lemna minor density. At very low densities, as expected, we observed an inverse density dependence. Duckweed reproduces by budding, causing a larger density to reproduce a greater amount of biomass. This would indicate that Duckweed likes overcrowding, and this may be a possible clue to the limiting factor in the growth of Duckweed. Introduction Lemna minor, commonly known as duckweed, is efficient and fast growing, making it an ideal experimental organism. It is known as a small aquatic monocotyledon which can be found floating in ponds, lakes or streams (Harper,

Our society is ruled by several social norms that most people in most places try to follow. As we grow up, we are taught to behave in certain ways depending on the situation. For instance, my parents would always tell me and my little sister to be in our best behavior when we were at church or when we went to someone else’s house. All in an attempt to get us used to comply with social norms and teach us proper conduct. Violations of social norms will trigger a negative response from those around us and depending on the severity of the violation, it could even make a person seem unfit to be part of a society. In this essay, I will analyze human territorialism as a social norm and I will explain the importance of spatial

In 1910, a Nobel Prize winning German bacteriologist stated, “A day will come when man will have to fight merciless noise as the worst enemy of health”. According to Dr. Koch, “noise, like smog, is a slow agent of death” (Robert Koch, 1910 cited in Vijayalakshmi, 2003). Unfortunately, the forecast provided by Dr. Koch one hundred years ago has come true at the present time.

Population demographics help scientists predict how populations will change over time and affect other organisms (Belk, Borden-Maier, 2010). A “population size” gives the numbers of organisms in a population, and a “population density” reveals the numbers of organisms per area of land in an ecosystem. The rate at which population grows and shrinks is measured, however, in trees are tagged also Americans have a census. Both are methods to quantify also study a population. Births, deaths,

use. Eliminating extra noise helps students with hearing impairments focus on the class lecture and

When there’s too many people living in one place it causes things to become troublesome. If there is too many people in one country, then crime will go up. “There's a big increase in crime as density

High Density is viewed as a key strategy to manage urban growth and is becoming an increasing feature of city plans; our very own city is an example of this.