Environmental Impacts of Aviation Essay Example for Free

Environmental Impacts of Aviation Essay Noise is said to have a variety of definitions. For people who are inclined towards acoustics, noise is identified as a complex form of sound waves that have irregular vibrations and has no known pitch. In the field of engineering, noise is considered as a signal that interferes with the detection and quality identification of another signal. However, for psychoacoustic studies which are focused on the study of human response to sound, noise is deemed as an unwanted form of sound (American Speech-Language-Hearing Association [ASHA], 2008). According to K. D. Kryter (1996), noise is an enhanced form of sound signals that post a negative effect in the physiological and psychological aspect of an individual (Kryter, 1996 cited in ASHA, 2008). For the most part, noise is something that could be identified as an unwanted sound which is a pollutant and a hazard to the health of human beings (ASHA, 2008). Noise can be derived from a variety of contributors, and such noises have their own levels that are detrimental to the hearing of an individual. Noise levels are measured in decibels. Sounds that are louder than 80 decibels are considered to be hazardous. One of the leading sources of potentially hazardous noise is the airport. Noises from airports could come from constructions and operating machines. However, the major contributor for airport noise is caused by the aircrafts. There are two ways on how aircraft noises are generated. First, airframe noise appears whenever air passes through the fuselage or body and wings of the plane. The activity causes friction and turbulence which often result in the production of unwanted sound. Gliders which are planes without engines produce noise during its flights. Second, engine noise is derived from the action of the moving parts of the aircraft’s engine. Such noise is also produced whenever the sound of air passes through the engines during high speed. Engine noise mainly comes from the plane’s exhaust or the jet situated behind the engine whenever the air sound from the engine combines with the air surrounding it (Wellington Airport, 2008). Based from the study carried out by Daniel Nunez (1998), airplane noise poses disturbance in the human sleep more than any other forms of noises. It was also indicated that more than 50% of the people residing near airports are awakened by airplane noise (Holland-Wegman, 1967 cited in Nunez, 1998). The onset of aircraft noise as a major problem began during the time when there is an upsurge in the need of air transportation after World War Two. By the end of 1950’s, the introduction of jet planes became widely known which later on catapulted the â€Å"aviation revolution† where commercial air passengers were also introduced (Nunez, 1998). The augmentation in the aircraft use also resulted in the increase in the noise level produced by air transportations. Because of the outstanding length of service and success of aircraft operations, airports gradually become larger and noisier. The attractive activities of airports also began to grab the attention of people, wherein surrounding communities started to spread all throughout the nearby areas. The more airports become bigger and nosier, the more residential structures, churches, and schools come closer to the area. Eventually, conflicting issues arise. Aside from the land expansion of airports which often cause nearby residents to act defensively, noise is also regarded as an issue that is very much integrated with airport operations (Bachman, 2003). As such, the painful sound from aircraft take offs and landings were viewed as the primary reasons of annoyance by the residents living near the area. From then on, airport noise has become a complex psychophysiological and economic issue (Nunez, 1998). The issues regarding aircraft noise are said to be complicated because of the aviation industry’s significance in the economy of developing countries. Without the presence of the aviation industry various economic industries would be gravely affected, some of which include the tourism business and mail transportation (Nunez, 1998). Many airports have spent large amounts of money in order to provide sound insulation for residential buildings and community owned structures to reduce aircraft noise (Bachman, 2003). One of the airports that have reached an agreement regarding their noise issue with the people in the surrounding community is the Wellington International Airport Limited (WIAL) situated in New Zealand. WIAL was constituted as a legal corporation on October 16, 1990. The aviation company is partly owned by the Wellington City Council which shares 34% of the total stocks, while the other 66% are owned by Infratil Limited. Wellington International Airport is known as the third largest airport in New Zealand and is classified as a regional hub that extends its international flight service not only in New Zealand but also to the Eastern part of Australia and the neighboring island countries in the south-west Pacific. Almost 90% of the passengers of WIAL travel domestically and majority of whom are business people (Ministry of Economic Development [MED], 2005). As it was said, no other cities in the world have an airport location that could be compared to Wellington International Airport. WIAL is situated on a narrow strip of land in the center of the residential areas. The airport is just minutes away towards the capital’s centre. It is also accessible through a short coastal scenic drive or passing through the tunnel at Mount Victoria. Although the location of the airport is said to be unique, the airport is faced with substantial challenges in terms of its environmental impact, specifically the aircraft noise. The location of Wellington International Airport which is close to the residential area became a ground for the residents to organize the Residents Airport Noise Action Group, the noise abatement requirement, as well as different actions from the internal operations of the airport in order to decrease the noise pollution (Wellington Airport, 2008). Residents Airport Noise Action Group In 1963, Maxine Harris first moved into her home at Strathmore which is near Wellington International Airport. Five years after, Harris reported that the jet noise began. According to documents, Harris and her neighbors were not at all bothered by the jet noise. However by 1980’s, Harris and her neighbors started hearing the night-time acceleration of the airplane engines of National Airways. Harris even noted that they heard the revving of the airplane engines that sounded like a high-pitched whining that would wake her up in the middle of the night and would not allow her to get back to sleep. Harris complained about the noise issue, but an airport official told her that no other individual complained about the noise. Harris talked to her other neighbor about the issue and her neighbor told her that he had also complained, yet the airport official also told him that no other person called the airport to complain. Both Harris and her neighbor responded to the issue by putting leaflets in the mailboxes of their neighbors. The leaflet called for the other residents to phone the airport whenever they were disturbed by the aircraft noise (Samson, 1997a). Because of this, the neighbors responded well, and in 1986, the Residents Airport Noise Action Group was established. The group was focused on performing two tasks: to halt the engine testing at night and to lessen the noise produced by the 737’s. It was in 1986 when the group had their first meeting with the city council. During that time, they have voiced their complaints regarding the noise issue. Their first attempt became successful after the city passed the first by-law which is focused on the engine-testing. The by-law limits the testing times of the National Airways Friendship fleet. However, subsequent efforts of the group were not as successful as their first attempt. The noise problem of the Boeing 737’s still remains (Samson, 1997a). In 1987, the Ansett Airlines became a part of the internal air service market. In return, Air New Zealand has to expand their operations. It was stated that the residents regarded 1987 as the year of â€Å"big explosion† because of the noise produced by the aircrafts. In response to the growing issue of the airport noise, the residents put forward a proposal, stating that all the 737’s should be phased out in 1997. Three months after the proposal was passed, Ansett acknowledged the residents’ plea by replacing the fleets with whisper jets that are much quieter compared to the 737’s. On the other hand, the city council framed a proposed by-law that would have ordered the Air New Zealand to reduce its fleet on a stage by stage process. However, the propose by-law did not take in effect (Samson, 1997a). By 1992, Air New Zealand promised that by the following year seven of their Boeing 737-200’s would have devices that would reduce noise known as hush kits and other fleets would be phased out and will be replaced by 737-300’s. However, the residents did not agree with this. Arguments were once again raised that have even reached the select committees of the parliament, yet the resolutions were unidentifiable (Samson, 1997, p. 19a). As a response to the noise issue that has been gaining public interest, the city council put forth a proposed district plan, but the residents opposed to it. However, in order to resolve the issue, environment court judge Shonagh Kenderdine ruled out in August of 1997 that the airport and the airlines should adhere to the strict rules as proposed by the district plan regarding the air noise boundary wherein a specific maximum noise level will be set. Furthermore, the noise boundary would later on be dissolved if there is an improvement with the airport and airlines noise management. Other regulations that were included in the ruling involve the night curfew, engine-testing, ground noise control, and land-use. The first three issues being disputed were already progressive after the issues were ruled out. The last dispute which was focused on the land use was not settled until November of 1997 (Samson, 1997a). As a follow up to the court ruling done on August of 1997, in order to end the ten-year fight regarding the acceptable noise level in Wellington area, and to finally conclude the last remaining area of dispute which was focused on the land use, Judge Shonagh Kenderdine ended the noise issue on November 20, 1997. The major players during the court case involved the Residents airport noise action group, the board of airline representatives, the Wellington city council, and the Wellington international airport. It was stipulated in the ruling that: â€Å"All new housing developments within the airport’s air-noise boundary would be deemed unrestricted discretionary activity† (Samson, 1997b, p. 3). Under the said ruling, any individuals who are interested to build residential structures within the surrounding airport area and all the application permits have to be approved by the Wellington City Council. Therefore, the council has the right to refuse or consent the details of the application depending on the criteria that are still to be set by the district plan (Samson, 1997b). Despite the criteria being on the process of completion, the interested party should be governed by the assessments set in the ruling wherein new homes that will be built within the airports air-noise boundary should use construction materials that could pass the standards of noise reductions. Such materials include: thicker gib boarding, double or thicker window glazing, and the installation of noise insulations. The ruling also required the city council to implement stricter rules regarding the development of new housings compared to the original proposition of the district plan (Samson, 1997b).

Congresss Presidental Conquest :: essays research papers

Congress’s Presidential Conquest   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"I am sworn to uphold the Constitution as Andy Johnson understands it and interprets it.† This is a simple quote from a simple man. 17th President of the United States, Andrew Johnson, and Congress had a sharp conflict about the way the South should be â€Å"re-constructed† in the wake of the just finished Civil War. The interpretation of this period of US history has been that Johnson was railroaded by radical Republicans and did not deserve to be impeached. Johnson wanted reconciliation with the former rebel states of the South, and that radical Republicans were out to humiliate the South and force a radical reconstruction program on them. The impeachment of President Andrew Johnson was unjust and primarily driven by radical members of the Congress who held different views on Reconstruction and how it should be accomplished.   Ã‚  Ã‚  Ã‚  Ã‚  Andrew Johnson was born to a poor family in Raleigh, North Carolina. He was never formally educated but until the age of 16, he was apprenticed to a tailor. At 16, he ran away to Greeneville, Tennessee where he opened his own tailor shop. He would eventually marry Eliza McCardle who helped to improve on his reading, writing, and math. Because his tailor business was doing so well, he was able to save up and buy a few slaves of his own. The two would have five children together. In 1829 Johnson was elected councilman and mayor of Greenville. During this, Johnson discovered a chic for public speaking. He made a rapid rise within the ladder of political offices. In 1835 he was sent to the state general assembly. Running as a Democrat, he was elected to the state senate and then two years later the House of Representatives which he served in until 1853. While in Congress, Johnson was notorious for his advocacy of cheap western land for the homesteaders and support for the Mexican War. He was elected twice as governor of Tennessee in 1853 and 1855. In 1857, he was in the U.S. Senate and he again tried to struggle for the homestead bill. Unfortunately the measure was vetoed by President James Buchanan. One of the biggest jumps in his political career came in 1862 when Lincoln appointed him military governor of Tennessee. He took up his post at the state capital. In effort to win votes from the Democrats and to balance Lincoln’s Union ticket with Southern Democrat, the Republicans nominated Johnson for vice-president.

Wilfred Owen -Anthem for Doomed Youth

These words indicate rifles were moving fast on the battleground as many soldiers were slain, this gives the reader a clear image and uses caesura as they reflect on the deaths in the war. 2) Why are the men referred as cattle? Wilfred Owe;en refers the men as cattle as exemplified by the phrase â€Å"who die as cattle†. This simile is used in the poem to make the reader realism how many soldiers were killed during the war fighting for there country. The men killed are compared to cattle to indicate the great number of soldiers inured and killed. At the start of the poem what rhetorical question Is asked by Owen before he goes to answer It? Owen asks a rhetorical question in the beginning of the poem which he then answers throughout the rest of the poem as evident in â€Å"what passing bells for those who die as cattle? † The question asked is a rhetorical question which gives no time for the reader to answer however the poem does that. Caesura has been used In this rhe torical question because It will give time for the reader to reflect on the question whilst reading down the poem. How does Owen appeal to our sense of sight and hearing by using the sounds of the battlefield? Owen appeals to our senses of sight and hearing using the sounds on the battlefields. This Is evident In â€Å"no mockeries for them from prayers or bells†, the phrase is appealing to our senses because it is explaining to readers ceremonies did not go on in any way either prayers or bells. The dead people were not given a proper funeral or mocked at. Owen uses the words prayer and bells because it is comparing the deaths then and now. It is highlighting the main differences of unreels.Moving on Owen also appeals to our senses by using personification to describe the gun shooting on the battlefield. This technique of personification Is event In â€Å"monstrous anger AT teen guns† Owen gives teen gun unman counterblasts to make the reader understand the sight and sounds on the battlefield. 5) Where does Owen suggest that there is no dignity in suffering during the war time? Throughout the poem Owen suggests that there is no dignity in suffering during the war time. He compares natural death to deaths caused by the war.This is evident in â€Å"demented choirs of wailing shells† the choirs are described as â€Å"shrill† and â€Å"demented† which indicate dying during war was a disastrous, mad and pointless. However dying naturally would be the completely opposite as you would have calm and relaxing choirs singing hymns rather than â€Å"wailing shells†. 6) What techniques does Owen suggest that young men were taken out of their beautiful countryside homes and persuaded to go to the frontline? Owen uses may techniques to show that they were missed and taken out of their countryside homes.One of the techniques used by Owen is a metaphor on line 13 stanza 2 as shown in the phrase â€Å"their flowers the tenderness of silent maids†. The metaphor used he is showing flowers were replaced by there wife's and girlfriends when they died fighting for there country. Family and friends were taking the place of flowers and missed thee brothers, dads, children and wives. Moving on Owen uses another technique to show they would not have a proper and burial and will be missed by there loved ones at home.

Philip II of Macedonia Essay - 1913 Words

Philip II of Macedonia became king when he was 23 years old in very dire situations in 359 B.C.E. (Sekunda 4). There were threats from barbarians north of Macedonia, and threats from the cunning Greek southern cities (4). Philip had to act quickly to gain control so he needed to create an army (4). He had spent time in Thebes as a hostage and gained military knowledge from the work of Epaminondas, one of the greatest generals of the day (Philip II). He armed his military with a sarissa, a pike that, at about 16 feet long, had a greater reach than Greek weapons (Philip II). This weapon made his army very powerful and allowed his phalanxes to strike first (Philip II). In 338 B.C.E., Philip defeated Chaeronea, one of the Greek†¦show more content†¦Philip and Cleopatra soon have a daughter and name her Europa (34). Philip is preparing for his invasion, and without a male heir to the throne, everyone is concerned about what will happen to the empire if he is killed in battle (35 ). Philip follows the advice of Demaratus and sends for his son Alexander (35). Soon after Alexander returns, Philip is offered a proposal of marriage between his mentally handicapped son, Arrhidaeus, and the daughter of the Carian throne (35). Alexander goes behind his father and sends the famed actor, Thessalus, to negotiate the marriage with him instead (35). Philip finds out and tells Alexander that he has showed little hope for being a worthy king (36). Alexander has just returned to the empire and does not want to create a new rift with Philip so he readily admits he had behaved imprudently (36). With all of the family distractions, Philip tries to focus on his plans for the invasion. He does have one other family matter to take care of before he leaves. Philip fears that Olympias brother, Alexander of Epirus, will not keep his allegiance with him since he divorced Olympias (36). He arranges the marriage of his daughter Cleopatra to Alexander to secure his allegiance (36). 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