Musical Impact Essay Example for Free

Musical Impact EssayIn aloneiance today, melody is shown to amaze an impact on ways of life. People deep down the society are raised with it in some way. Music is always present in society. It is natural then, to wonder about the origin of music. Music is a limited type of sound and noises miscellaneous in together. People name the meanings of these sounds and noises to create their own opinions and emotions of expressing themselves. some(prenominal) nation believed that music is created in the mind for this compar able-bodied reason. That we gather in the sounds and noises that are heard are within our own human being and along that, it give the sack come once we are born with it.Although, this may not be true, due to the differences in todays society, there are many aspects that after part have a control of the melodious taste of a person. Ones musical interests are not based on biology, rather the individuals environment community, culture, religion, and geogr aphy. First of all a community can opinion an individual interest in music. The definition of a community is having the very(prenominal) beliefs, resources, require and risks. When people bleed to share and have the same interest they tend to also have the same interest in music.The term community music finds no more resonating tone than within minority groups working toward social acceptance and assimilation (Hayes 6). As shown in the International Journal we can see people tend to stick together in ordinance to have the same identity and be accepted in the group. Also sharing the same risks and resources leave behind help them have communication within individually other, making it be easier on them to be able to relate. An example of this would be people in community, such(prenominal) as in Honduras, they have a serving of unalike beliefs.For example, in the burials, the community gathers about in point to their last goodbye to the deceased. Then they called upon a ba nd, which in their thoughts mean that they celebrate the life of the deceased. They to severally one sing and walk with the burial service and take them around. This event mentioned, to some may be disrespectful, but to Hondurans is a way to communicate with the dead. It shows that they respect him or her and show him or her that they are celebrating the life they had. Having communication in music brings to a community a better aspect to people and it is also genuinely important for them.Yes, they can be sounds and noises to some, but many do not think that way. Like the people in Honduras, their beliefs are very important and they edge them through music. Therefore, a community could determine a persons interest in music because a community put ons an individual do the same thing as other people. Another example would be, if a person listens to rock and they see that other people listen to it too, than they will would go in advance and hear it to. Secondly, culture is also a nother factor out that influences music preferences on individuals.The culture of someone can affect the way of music choices. The two factors that fork over culture will be academic knowledge and manners taught to each person (Yudkin 27). Each culture then possesses on its own musical language. This musical language reflects its own traditions, concerns, and activities and in order to begin to understand the music of another culture, we need to understand something of the nature of its culture systems and the role the music plays in them (Yadkin 5). This is because many of the cultures have different academics and manners taught to them.An example is the culture would be of the Mandinka of Gambia in Senegal, they have a special musician leader, known as a jali. This leader is very important to the tribe due to that fact that he knows all the prayers and all the history of the tribe (Miller 44). As shown in this example each culture has its own special person and holds music as a special start out of the community. The important part here is that a person needs to grow up somewhere. That place holds a significant knowledge making them a part of that culture group. With growing with them they hold a place within the culture.Music brings them all together making them communicate with each other easily and bring them normalcy. When this takes place the individual takes the musical knowledge and incorporates it into their system and beliefs. The beliefs that they corporate can be seen in their academic areas. The literature, dance, and theater cannot go anywhere and do their expected ideas across without music. Music has to be in these areas in order to function well and be able to get the individuals culture across to the people. For example, dance cannot function without music.It gives the person the beats and the melody in order to create the feeling they want to get across to their audience (Miller 57). Dance also has different meanings in culture. A New Yorker can have a different rhythm than a person from China. This difference can be seen with the music they choose for their arts and their dance. Its really difficult to be able to be prejudice to others cultures, because every culture is different. Music has that effect on society because it teaches the cultures and meanings of ones society. The mixture of music to other society is also shown.Many of these arts can be seen throughout the world and from them people learn the differences in music. Music such as Jazz, Blues, and Gospels were produced when Europeans and Africans came together during the late 19th and twentieth centurys (Miller 61). Here we can see two cultures mixed in together and this is shown through their mix of their own music. Music can bring together worlds and is all due to its simplicity such as using their melodies and sounds. Music creates a new world for many people. The third factor that can affect the music choices of the individuals is the fact of one s religion.Many religions do not allowed their followers to hear music from the outside world such hip-hop and rock. As said by Kong, its nature is presented in a stylized and stereotypical fashion by the mass media the moral barricades are work by bishops (Kong 104). An example of this is Christians and Catholics which have very different opinions regarding music. Christians is the larger group that includes Catholics. Christian women followers are not allowed to wear pants or the followers are not able to hear any type of music because in their regard they are preventing is a sin from them.While Catholic church service allowed their followers to wear their clothing with respect to God and be able to choose the type of music they listen to. As seen the music plays a enormous role due to the fact that Catholic churches make prayers into songs and sing them with their hearts, believing that God can be able to hear them (Miller kj187). While Christians cannot be able to do the sam e pray and sing to God due to the banned of music within their own. To many this is not unusual seeing the difference of worship. save when once looked inside and see the music playing its role is different because it makes people think about what God thinks and which one he would prefer. If it is just music and prayers, then there is no music at all in its gatherings of worship. This is important because music can be seen playing a role in religions and making individuals having a different taste to the one with a Catholic follower. The religion of a person a can limit the person the knowledge of the evolution of the music outside their group. This can make it hard on them to relate to the others outside the society.The last and important factor that can make a difference in ones interest in music is the geography. Many people as seen can have different views and belief but geography make them have a different taste in music. We hear the melody, but we feel the beat. People in all cultures move their bodies to the rhythms of music, whether drumming, dancing, or rocking an infant (Silver and flight simulator 2). This is important because a person in Los Angeles California will not have the same beats and rhythm as a person in London, Great Britain. Each part of the world is bound to have some type of music but the music differentiated in each part of the world.As mentioned in the seven themes of music geography specific involvement with location of musical activities, such as the compositions and travels of their composers, rather than broader world distributions of regional delineations mentioned in Theme Two (Nash and Carney 66). This means that even with culture and communities, music was first put into the field of geography due to the travels of the musicians and the spread of their ideas and tunes. This is important because it not only gives a way for questions to arise such the one that geography is the main factor as to the interest of music in humans .Due to the composers traveling, they spread around the ideas meaning that culture is affected and the belief is shaken with these ideas. The population of the countries is also a big factor because due to the fact that people are mixed together. People with different geography regions tend to have a different viewpoint of the world and music can be included in that. In conclusion this can be said, that these types of points can create music interest such ones environment community, culture, religion, and geography. This can be reasonable because people cannot be born with music interests. They are shaped by ones environment.People can have the same music interests if they shared the same belief and the same religion where they live. Music is very common in and around the world. Music is therefore a symbol to society because it represents the life and beliefs of people. Music can have a great impact on the life of people and this is important because this makes society. Music is evi dently an important part of the lives of human beings. Music is reflected to our society we are in. The four aspects which are ones community, culture, religion, and geography can determine each persons interests in music rather than biological.Other factors can also relate to ones musical preference, but the four aspects are the ones that are most common. Music is bound to be heard over and without music the world would have hard times understanding things. Music is important to our world because it brings us together and also puts life and excitement. Music will always motivate people and will always be part of our lives. Without music, our society wouldnt be the same including our feelings and impressions about it. Therefore, music brings happiness to our friends, and families, and all the people around the world.

The field of nuclear physics

The field of atomic physicsNuclear physics is the field of physics that studies the building blocks and interactions of atomic nuclei. The most norm every last(predicate)y known applications of atomic physics are nuclear power and nuclear weapons, but the research has provided wider applications, including those in medicine (nuclear medicine, magnetic resonance imaging), materials engineering (ion implantation) and archaeology (radiocarbon dating).The field of particle physics evolved out of nuclear physics and, for this reason, has been included under the analogous term in earlier times.The discovery of the electron by J. J. Thomson was the first indication that the atom had internal structure. At the turn of the 20th century the accepted model of the atom was J. J. Thomsons plum pudding model in which the atom was a great(p) positively aerated ball with small negatively charged electrons embedded inside of it. By the turn of the century physicists had as well discovered three types of radiation coming from atoms, which they named alpha, beta, and da Gamma radiation. Experiments in 1911 by Lise Meitner and Otto Hahn, and by James Chadwick in 1914 discovered that the beta break up spectrum was continuous sooner than discrete. That is, electrons were ejected from the atom with a range of energies, kinda than the discrete amounts of energies that were observed in gamma and alpha decays. This was a problem for nuclear physics at the time, because it indicated that power was not conserved in these decays.In 1905, Albert Einstein formulated the idea of freshet? dexterity equivalence. While the work on radioactivity by Becquerel, capital of South Dakota and Marie Curie predates this, an explanation of the source of the energy of radioactivity would impart to wait for the discovery that the effect itself was composed of smaller constituents, the nucleons.Rutherfords team discovers the nucleusIn 1907 Ernest Rutherford promulgated Radiation of the a Particle from Radium in passing through Matter1. Geiger spread out on this work in a communication to the Royal Society2 with experiments he and Rutherford had done passing a particles through air, aluminum foil and gold leaf. More work was published in 1909 by Geiger and Marsden3 and further greatly expanded work was published in 1910 by Geiger,4 In 1911-2 Rutherford went before the Royal Society to explain the experiments and propound the new possibleness of the atomic nucleus as we now understand it.The key experiment behind this announcement happened in 1909 as Ernest Rutherfords team performed a remarkable experiment in which Hans Geiger and Ernest Marsden under his lapse fired alpha particles (helium nuclei) at a thin film of gold foil. The plum pudding model predicted that the alpha particles should come out of the foil with their trajectories macrocosm at most slightly bent. Rutherford had the idea to instruct his team to look for something that shocked him to actually observe a some particles were scattered through large angles, even completely backwards, in some gaffes. He likened it to firing a bullet at tissue paper and having it bounce off. The discovery, beginning with Rutherfords analysis of the info in 1911, eventually conduct to the Rutherford model of the atom, in which the atom has a very small, very dense nucleus containing most of its mass, and consisting of heavy positively charged particles with embedded electrons in order to balance out the charge (since the neutron was unknown). As an example, in this model (which is not the modern one) nitrogen-14 consisted of a nucleus with 14 protons and 7 electrons (21 total particles), and the nucleus was surrounded by 7 more orbiting electrons.The Rutherford model worked quite well until studies of nuclear spin were carried out by Franco Rasetti at the atomic number 20 Institute of Technology in 1929. By 1925 it was known that protons and electrons had a spin of 1/2, and in the Rutherford model of nitrogen-14, 20 of the total 21 nuclear particles should have paired up to skunkcel each early(a)s spin, and the final odd particle should have left the nucleus with a net spin of 1/2. Rasetti discovered, however, that nitrogen-14 has a spin of 1.James Chadwick discovers the neutronIn 1932 Chadwick realized that radiation that had been observed by Walther Bothe, Herbert L. Becker, Ir?ne and Fr?d?ric Joliot-Curie was actually due to a so-so(p) particle of about the same mass as the proton, that he called the neutron (following a suggestion about the need for much(prenominal)(prenominal) a particle, by Rutherford). In the same year Dmitri Ivanenko suggested that neutrons were in fact spin 1/2 particles and that the nucleus contained neutrons to explain the mass not due to protons, and that there were no electrons in the nucleus only protons and neutrons. The neutron spin immediately solved the problem of the spin of nitrogen-14, as the one unpaired proton and one unpaired neutr on in this model, each contribute a spin of 1/2 in the same direction, for a final total spin of 1.With the discovery of the neutron, scientists at last could calculate what fraction of stuffing energy each nucleus had, from comparing the nuclear mass with that of the protons and neutrons which composed it. Differences between nuclear masses calculated in this way, and when nuclear reactions were measured, were found to book with Einsteins calculation of the equivalence of mass and energy to in high spirits accuracy (within 1% as of in 1934).Yukawas meson postulated to bind nucleiIn 1935 Hideki Yukawa proposed the first significant theory of the strong force to explain how the nucleus holds together. In the Yukawa interaction a virtual particle, later called a meson, mediated a force between all nucleons, including protons and neutrons. This force explained why nuclei did not disintegrate under the influence of proton disgust, and it also gave an explanation of why the attractiv e strong force had a more trammel range than the electromagnetic repulsion between protons. Later, the discovery of the pi meson showed it to have the properties of Yukawas particle.With Yukawas papers, the modern model of the atom was complete. The center of the atom contains a lactating ball of neutrons and protons, which is held together by the strong nuclear force, unless it is too large. Unstable nuclei may undergo alpha decay, in which they emit an energetic helium nucleus, or beta decay, in which they eject an electron (or positron). After one of these decays the resultant nucleus may be left in an mad state, and in this case it decays to its ground state by emitting high energy photons (gamma decay).The study of the strong and woebegone nuclear forces (the latter explained by Enrico Fermi via Fermis interaction in 1934) led physicists to collide nuclei and electrons at ever higher energies. This research became the science of particle physics, the crown jewel of which is the standard model of particle physics which unifies the strong, weak, and electromagnetic forces. forward-looking nuclear physicsMain articles Liquid-drop model and Shell modelA heavy nucleus can contain hundreds of nucleons which means that with some approximation it can be treated as a classical system, rather than a quantum-mechanical one. In the resulting liquid-drop model, the nucleus has an energy which arises partly from surface tension and partly from electrical repulsion of the protons. The liquid-drop model is able to reproduce many features of nuclei, including the general trend of binding energy with respect to mass number, as well as the phenomenon of nuclear fission.Superimposed on this classical picture, however, are quantum-mechanical effects, which can be described using the nuclear shell model, developed in large part by Maria Goeppert-Mayer. Nuclei with certain(prenominal) numbers of neutrons and protons (the magic numbers 2, 8, 20, 50, 82, 126, ) are particul arly stable, because their shells are filled.Other more complicated models for the nucleus have also been proposed, such(prenominal) as the interacting boson model, in which pairs of neutrons and protons interact as bosons, analogously to Cooper pairs of electrons.Much of current research in nuclear physics relates to the study of nuclei under organic conditions such as high spin and excitation energy. Nuclei may also have extreme shapes (similar to that of Rugby balls) or extreme neutron-to-proton ratios. Experimenters can create such nuclei using artificially induced fusion or nucleon transfer reactions, employing ion beams from an accelerator. Beams with even higher energies can be used to create nuclei at very high temperatures, and there are signs that these experiments have produced a phase transition from normal nuclear matter to a new state, the quark-gluon plasma, in which the quarks mingle with one another, rather than organism segregated in triplets as they are in neutro ns and protons.Modern topics in nuclear physicsSpontaneous changes from one nuclide to another nuclear decayMain article RadioactivityThere are 80 instalments which have at least one stable isotope (defined as isotopes never observed to decay), and in total there are about 256 such stable isotopes. However, there are thousands more well-characterized isotopes which are unstable. These radioisotopes may be unstable and decay in all timescales ranging from fractions of a second to weeks, years, or many cardinals of years.For example, if a nucleus has too few or too many neutrons it may be unstable, and allow for decay after some period of time. For example, in a help called beta decay a nitrogen-16 atom (7 protons, 9 neutrons) is converted to an oxygen-16 atom (8 protons, 8 neutrons) within a few seconds of being created. In this decay a neutron in the nitrogen nucleus is turned into a proton and an electron and antineutrino, by the weak nuclear force. The element is transmuted to another element in the process, because while it previously had seven protons (which makes it nitrogen) it now has eight (which makes it oxygen).In alpha decay the radioactive element decays by emitting a helium nucleus (2 protons and 2 neutrons), giving another element, plus helium-4. In many cases this process continues through several steps of this kind, including other types of decays, until a stable element is formed.In gamma decay, a nucleus decays from an excited state into a lower state by emitting a gamma ray. It is then stable. The element is not changed in the process.Other more exotic decays are possible ( cope with the main article). For example, in internal conversion decay, the energy from an excited nucleus may be used to eject one of the inner orbital electrons from the atom, in a process which produces high speed electrons, but is not beta decay, and (unlike beta decay) does not transmute one element to another.Nuclear fusionMain article Nuclear fusionWhen two low mass nuclei come into very close contact with each other it is possible for the strong force to fuse the two together. It satiates a great deal of energy to push the nuclei close enough together for the strong or nuclear forces to have an effect, so the process of nuclear fusion can only take place at very high temperatures or high densities. Once the nuclei are close enough together the strong force overcomes their electromagnetic repulsion and squishes them into a new nucleus. A very large amount of energy is released when light nuclei fuse together because the binding energy per nucleon increases with mass number up until nickel-62. Stars like our sun are powered by the fusion of four protons into a helium nucleus, two positrons, and two neutrinos. The uncontrolled fusion of hydrogen into helium is known as thermonuclear runaway. Research to find an economically viable method of using energy from a controlled fusion reaction is currently being undertaken by various research est ablishments (see JET and ITER).For nuclei heavier than nickel-62 the binding energy per nucleon decreases with the mass number. It is therefore possible for energy to be released if a heavy nucleus breaks asunder into two lighter ones. This splitting of atoms is known as nuclear fission.The process of alpha decay may be thought of as a special(prenominal) type of spontaneous nuclear fission. This process produces a highly asymmetrical fission because the four particles which make up the alpha particle are peculiarly tightly bound to each other, making production of this nucleus in fission particularly likely.For certain of the heaviest nuclei which produce neutrons on fission, and which also easily dupe neutrons to initiate fission, a self-igniting type of neutron-initiated fission can be obtained, in a so-called chain reaction. (Chain reactions were known in chemistry before physics, and in fact many familiar processes like fires and chemical explosions are chemical chain react ions.) The fission or nuclear chain-reaction, using fission-produced neutrons, is the source of energy for nuclear power plants and fission type nuclear bombs such as the two that the United States used against Hiroshima and Nagasaki at the end of World War II. Heavy nuclei such as uranium and thorium may undergo spontaneous fission, but they are much more likely to undergo decay by alpha decay.For a neutron-initiated chain-reaction to occur, there must be a critical mass of the element present in a certain space under certain conditions (these conditions slow and conserve neutrons for the reactions). There is one known example of a natural nuclear fission reactor, which was active in two regions of Oklo, Gabon, Africa, over 1.5 billion years ago. Measurements of natural neutrino emission have demonstrated that or so half of the heat emanating from the Earths core results from radioactive decay. However, it is not known if any of this results from fission chain-reactions. payoff of heavy elementsAccording to the theory, as the Universe cooled after the king-size bang it eventually became possible for particles as we know them to exist. The most common particles created in the big bang which are still easily observable to us today were protons (hydrogen) and electrons (in equal numbers). Some heavier elements were created as the protons collided with each other, but most of the heavy elements we see today were created inside of stars during a series of fusion stages, such as the proton-proton chain, the CNO cycle and the triple-alpha process. Progressively heavier elements are created during the evolution of a star. Since the binding energy per nucleon peaks around iron, energy is only released in fusion processes occurring below this point. Since the creation of heavier nuclei by fusion costs energy, nature resorts to the process of neutron capture. Neutrons (due to their lack of charge) are readily absorb by a nucleus. The heavy elements are created by eit her a slow neutron capture process (the so-called s process) or by the rapid, or r process. The s process occurs in thermally pulsing stars (called AGB, or asymptotic giant branch stars) and takes hundreds to thousands of years to reach the heaviest elements of lead and bismuth. The r process is thought to occur in supernova explosions because the conditions of high temperature, high neutron flux and ejected matter are present. These stellar conditions make the successive neutron captures very fast, involving very neutron-rich species which then beta-decay to heavier elements, particularly at the so-called waiting points that correspond to more stable nuclides with closed neutron shells (magic numbers). The r process duration is typically in the range of a few seconds.

Examining The Sound Navigation Technique Of Sonar Engineering Essay

Examining The vowelize Navigation Technique Of asdic Engineering EssaySonar sum lumbering navigation and ranging is a technique that utilizations go bad times ( commonly under pee, as in slew navigation) to navigate, communicate with or detect another(prenominal) vessels. Two types of technology shargon the name asdic passive echo dependable is essendially lis disco biscuiting for the skillful made by vessels active echo sounder is emitting throbs of sounds and listening for echoes. Sonar whitethorn be utilize as a means of acoustic location and of measurement of the echo characteristics of targets in the piddle. Acoustic location in air was employ before the introduction of radar. Sonar may similarly be drug abused in air for robot navigation, and SODAR upward looking in-air echo sounder) is used for atmospheric investigations. The term asdic is also used for the equipment used to grow and receive the sound. The acoustic frequencies used in echo sounder system s vary from actually low (infrasonic) to extremely high (ultrasonic). The study of underwater sound is know as underwater acoustics or hydro acousticsHistoryAlthough some animals (dolphins and bats) ask used sound for communication and object detection for millions of y pinnules, use by humans in the water is signly recorded by Leonardo Da Vinci in 1490 a tube inserted into the water was said to be used to detect vessels by placing an ear to the tube.citation neededIn the 19th century an underwater bell was used as an ancillary to lighthouses to propose warning of hazards.The use of sound to echo locate underwater in the same way as bats use sound for aerial navigation seems to have been prompted by the Titanic disaster of 1912. The worlds first glaring for an underwater echo ranging device was filed at the British Patent Office by English meteorologist Lewis Richardson a month after the sinking of the Titanic, and a German physicist Alexander Behm obtained a patent for an ech o sounder in 1913. Canadian Reginald Fessenden, while working for the Submarine Signal Company in Boston, built an data-based system beginning in 1912, a system later tested in Boston Harbor, and finally in 1914 from the U.S. Revenue (now Coast Guard) Cutter Miami on the Grand Banks off Newfoundland Canada. In that test, Fessenden demonstrated learning sounding, underwater communications (Morse Code) and echo ranging (detecting an iceberg at two miles (3 km) aver). The so-called Fessenden oscillator, at ca. 500 Hz frequency, was unable to check into the bearing of the berg due to the 3 meter wavelength and the blue dimension of the transducers radiating face (less than 1 meter in diameter). The ten Montreal-built British H class submarines launched in 1915 were equipped with a Fessenden oscillator.During World War I the need to detect submarines prompted more research into the use of sound. The British made former(a) use of underwater hydrophones, while the French physicist Paul Langevin, working with a Russian immigrant electrical engineer, Constantin Chilowski, worked on the increment of active sound devices for detecting submarines in 1915 using quartz. Although piezoelectric and magnetostrictive transducers later superseded the electrostatic transducers they used, this work influenced future designs.Per signifierance factorsThe detection, classification and localization performance of a sonar depends on the environment and the receiving equipment, as advantageously as the transmitting equipment in an active sonar or the target radiated noise in a passive sonar.Sound propagationSonar operation is affected by variations in sound speed, itemly in the vertical plane. Sound travels more slowly in odorous water than in sea water, though the difference is small. The speed is determined by the waters bulk modulus and mass density. The bulk modulus is affected by temperature, dissolve impurities ( ordinarily salinity), and mechanical press. The density in stall is small. The speed of sound (in feet per second) is approximately4388 + (11.25 - temperature (in F)) + (0.0182 - depth (in feet)) + salinity (in parts-per-thousand ).This empirically derived approximation equation is reasonably accurate for normal temperatures, concentrations of salinity and the range of most ocean depths. Ocean temperature varies with depth, still at between 30 and 100 meters there is frequently a marked change, called the thermo cline, dividing the warmer coat water from the cold, still waters that make up the rest of the ocean. This crumb frustrate sonar, because a sound originating on one side of the thermo cline tends to be bent, or refracted, by dint of the thermo cline. The thermo cline may be present in shallower coastal waters. However, wave action will often mix the water column and eliminate the thermo cline. Water pressure also affects sound propagation higher pressure increases the sound speed, which causes the sound waves to refract away fr om the area of higher sound speed. The mathematical model of divagation is called Snells law.If the sound source is deep and the conditions are right, propagation may occur in the deep sound channel. This provides extremely low propagation loss to a receiver in the channel. This is because of sound trapping in the channel with no losses at the boundaries. Similar propagation can occur in the surface duct under suitable conditions. However in this case there are reflection losses at the surface.In shallow water propagation is in the main by repeated reflection at the surface and bottom, where considerable losses can occur.Sound propagation is affected by absorption in the water itself as headspring as at the surface and bottom. This absorption depends upon frequency, with several(prenominal) antithetic mechanisms in sea water. Long-range sonar uses low frequencies to pick at absorption effects.The sea contains umteen sources of noise that interfere with the desired target echo or signature. The main noise sources are waves and shipping. The motion of the receiver finished the water can also cause speed-dependent low frequency noise.ScatteringWhen active sonar is used, scattering occurs from small objects in the sea as well as from the bottom and surface. This can be a major source of interference. This acoustic scattering is analogous to the scattering of the light from a cars headlights in haze a high-intensity pencil beam will penetrate the fog to some extent, but broader-beam headlights emit much light in unwanted directions, much of which is unconnected back to the observer, overwhelming that reflected from the target (white-out). For analogous reasons active sonar needs to transmit in a narrow beam to minimize scattering.Target characteristicsThe sound reflection characteristics of the target of an active sonar, such(prenominal) as a submarine, are kn possess as its target strength. A complication is that echoes are also obtained from other objects in the sea such as whales, wakes, schools of slant and rocks.Passive sonar detects the targets radiated noise characteristics. The radiated spectrum comprises a continuous spectrum of noise with peaks at certain frequencies which can be used for classification.Countermeasures1) Active countermeasures may be launched by a submarine under attack to raise the noise level, provide a cosmic fake target, and obscure the signature of the submarine itself.2) Passive countermeasures includeThere is a mounting noise-generating device on isolating devices.We use a sound-absorbent coating on the hulls of submarines, for example anechoic tiles.Active sonarActive sonar uses a sound transmitter and a receiver. When the two are in the same present it is monostatic operation. When the transmitter and receiver are separated it is bistatic operation. When more transmitters (or more receivers) are used, again spatially separated, it is multistate operation. Most sonars are used monostatically with the same array often being used for transmitting and reception. Active son buoy fields may be operated multistatically.Active sonar creates a pulse of sound, often called a ping, and then listens for reflections (echo) of the pulse. This pulse of sound is generally created electronically using a sonar Projector consisting of a type generator, power amplifier and electro-acoustic transducer/array. A beam former is usually employed to concentrate the acoustic power into a beam, which may be swept to cover the required search angles. Generally, the electro-acoustic transducers are of the Tonpilz type and their design may be optimized to achieve maximum efficiency over the truthfulst bandwidth, in order to optimize performance of the overall system. Occasionally, the acoustic pulse may be created by other means, e.g.(1) Chemically using explosives(2) Air guns(3) Plasma sound sources.To measure the distance to an object, the time from transmission of a pulse to reception is mensura l and born-again into a range by kno extension service the speed of sound. To measure the bearing, several hydrophones are used, and the set measures the relative arrival time to each, or with an array of hydrophones, by measuring the relative amplitude in beams formed through a make for called beam forming. Use of an array reduces the spatial response so that to provide wide cover multibeam systems are used.The targets signal (if present) together with noise is then passed through various forms of signal processing, which for simple sonars may be just cleverness measurement. It is then presented to some form of decision device that calls the output either the required signal or noise. This decision device may be an streetwalker with headphones or a presentation, or in more advanced sonar this function may be carried out by software. Further processes may be carried out to classify the target and order it, as well as measuring its velocity.The pulse may be at constant frequenc y or a chirp of changing frequency (to allow pulse compression on reception). Simple sonars generally use the former with a filter wide enough to cover possible Doppler changes due to target movement, while more complex ones generally include the latter technique. Since digital processing became available pulse compression has usually been implemented using digital correlation techniques. Military sonars often have multiple beams to provide all-round cover while simple ones only cover a narrow arc, although the beam may be rotated, relatively slowly, by mechanical scanning.Particularly when single frequency transmissions are used, the Doppler effect can be used to measure the radial speed of a target. The difference in frequency between the transmitted and legitimate signal is measured and converted into a velocity. Since Doppler shifts can be introduced by either receiver or target motion, allowance has to be made for the radial speed of the meddling platform.One of the useful sm all sonar is similar in appearance to a waterproof flashlight. The head is pointed into the water, a button is pressed, and the device displays the distance to the target. some other variant is a fish finder that shows a small display with shoals of fish. Some civilian sonars approach active military sonars in capability, with quite strange three-dimensional displays of the area near the boat.When active sonar is used to measure the distance from the transducer to the bottom, it is known as echo sounding. Similar methods may be used looking upward for wave measurement.Active sonar is also used to measure distance through water between two sonar transducers or a combination of a hydrophone (underwater acoustic microphone) and projector (underwater acoustic speaker). A transducer is a device that can transmit and receive acoustic signals (pings). When a hydrophone/transducer receives a special(prenominal) interrogation signal it responds by transmitting a specific reply signal. To measure distance, one transducer/projector transmits an interrogation signal and measures the time between this transmission and the reception of the other transducer/hydrophone reply. The time difference, scaled by the speed of sound through water and divided by two, is the distance between the two platforms. This technique, when used with multiple transducers/hydrophones/projectors, can calculate the relative positions of static and moving objects in water.In besiege situations, an active pulse can be detected by an rival and will reveal a submarines position.A very directional, but low-efficiency, type of sonar makes use of a complex nonlinear feature of water known as non-linear sonar, the virtual transducer being known as a parametric array.Project ARTEMISProject ARTEMIS was one-of-a-kind low-frequency sonar for surveillance that was deployed off Bermuda for several years in the early 1960s. The active portion was deployed from a World War II tanker, and the receiving array was a built into a fixed position on an onshore bank.TransponderThis is an active sonar device that receives a stimulus and immediately retransmits the acquire signal or a predetermined one.Passive sonarPassive sonar listens without transmitting. It is often employed in military settings, although it is also used in science applications, e.g., detecting fish for presence/absence studies in various aquatic environments see also passive acoustics and passive radar. In the very broadest usage, this term can encompass virtually any analytical technique involving remotely generated sound, though it is usually restricted to techniques applied in an aquatic environment.Identifying sound sourcesPassive sonar has a wide variety of techniques for accounting the source of a detected sound. For example, U.S. vessels usually operate 60 Hz alternating current power systems. If transformers or generators are mount without proper vibration insulation from the hull or hold out flooded, the 60 H z sound from the windings can be emitted from the submarine or ship. This can help to identify its nationality, as most European submarines have 50 Hz power systems. Intermittent sound sources (such as a wrench being dropped) may also be detectable to passive sonar. Until fairly recently, an experient trained operator identified signals, but now computers may do this.Passive sonar systems may have large sonic databases, but the sonar operator usually finally classifies the signals manually. A computer system frequently uses these databases to identify classes of ships, actions (i.e. the speed of a ship, or the type of weapon released), and even particular ships. Publications for classification of sounds are provided by and continually updated by the US Office of Naval Intelligence.Noise limitationsPassive sonar on vehicles is usually severely circumscribed because of noise generated by the vehicle. For this reason, many submarines operate nuclear reactors that can be cooled withou t pumps, using silent convection, or fuel cells or batteries, which can also cultivate silently. Vehicles propellers are also designed and precisely machined to emit minimal noise. High-speed propellers often create tiny bubbles in the water, and these cavitations have a distinct sound.The sonar hydrophones may be towed behind the ship or submarine in order to reduce the effect of noise generated by the watercraft itself. Towed units also combat the thermo cline, as the unit may be towed above or below the thermo cline.The display of most passive sonars used to be a two-dimensional falls display. The horizontal direction of the display is bearing. The vertical is frequency, or sometimes time. Another display technique is to color-code frequency-time information for bearing. More recent displays are generated by the computers, and mimic radar-type plan position indicator displays.Performance predictionUn bid active sonar, only one way propagation is involved. Because of the assorte d signal processing used, the lower limit detectable signal to noise ratio will be different. The equation for determining the performance of passive sonar isSL TL = NL DI + DTwhere SL is the source level, TL is the transmission loss, NL is the noise level, DI is the directivity index of the array (an approximation to the array gain) and DT is the detection threshold. The figure of merit of passive sonar isFOM = SL + DI (NL + DT).WarfareModern naval state of war makes extensive use of both passive and active sonar from water-borne vessels, aircraft and fixed installations. The relative usefulness of active versus passive sonar depends on the radiated noise characteristics of the target, generally a submarine. Although in WW II active sonar was used by surface craft-submarines avoided emitting pings which revealed their presence and position-with the advent of modern signal-processing passive sonar became preferred for sign detection. Submarines were then designed for quieter op eration, and active sonar is now more used. In 1987 a division of Japanese company Toshiba reportedly sold machinery to the Soviet total that allowed it to mill submarine propeller blades so that they became radically quieter, creating a huge security issue with their newer generation of submarines.Active sonar gives the exact bearing to a target, and sometimes the range. Active sonar works the same way as radar a signal is emitted. The sound wave then travels in many directions from the emitting object. When it hits an object, the sound wave is then reflected in many other directions. Some of the energy will travel back to the emitting source. The echo will enable the sonar system or technician to calculate, with many factors such as the frequency, the energy of the received signal, the depth, the water temperature, the position of the reflecting object, etc. Active sonar is used when the platform commanding officer determines that it is more important to determine the position o f a possible panic submarine than it is to conceal his own position. With surface ships it might be assumed that the threat is already tracking the ship with satellite data. Any vessel almost the emitting sonar will detect the emission. Having heard the signal, it is easy to identify the sonar equipment used and its position. Active sonar is similar to radar in that, while it allows detection of targets at a certain range, it also enables the emitter to be detected at a far greater range, which is undesirable.Since active sonar reveals the presence and position of the operator, and does not allow exact classification of targets, it is used by fast (planes, helicopters) and by blatant platforms but rarely by submarines. When active sonar is used by surface ships or submarines, it is typically activated very briefly at sporadic periods to minimize the risk of detection. Consequently active sonar is normally considered a backup to passive sonar. In aircraft, active sonar is used in the form of disposable son buoys that are dropped in the aircrafts patrol area or in the vicinity of possible enemy sonar contacts.Passive sonar has several advantages. Most importantly, it is silent. If the target radiated noise level is high enough, it can have a greater range than active sonar, and allows the target to be identified. Since any outfit object makes some noise, it may in principle be detected, depending on the level of noise emitted and the ambient noise level in the area, as well as the technology used. To simplify, passive sonar sees around the ship using it. On a submarine, nose-mounted passive sonar detects in directions of about 270, centered on the ships alignment, the hull-mounted array of about 160 on each side, and the towed array of a full 360. The invisible areas are due to the ships own interference. Once a signal is detected in a certain direction (which means that something makes sound in that direction, this is called broadband detection) it is poss ible to zoom in and analyze the signal received (narrowband analysis). This is generally done using a Fourier transform to show the different frequencies making up the sound. Since every engine makes a specific sound, it is straightforward to identify the object. Databases of unique engine sounds are part of what is known as acoustic intelligence or ACINT.Another use of passive sonar is to determine the targets trajectory. This process is called Target Motion Analysis (TMA), and the resultant solution is the targets range, course, and speed. TMA is done by marking from which direction the sound comes at different times, and comparing the motion with that of the operators own ship. Changes in relative motion are analyzed using standard geometrical techniques along with some assumptions about limiting cases.Passive sonar is stealthy and very useful. However, it requires high-tech electronic components and is costly. It is generally deployed on expensive ships in the form of arrays to enhance detection. Surface ships use it to good effect it is even go against used by submarines, and it is also used by airplanes and helicopters, mostly to a surprise effect, since submarines can hide under thermal layers. If a submarines commander believes he is alone, he may bring his boat closer to the surface and be easier to detect, or go deeper and faster, and thus make sounder.Examples of sonar applications in military use are given below. Many of the civil uses given in the following section may also be appli bloodline to naval use.Anti-submarine warfare changeable Depth Sonar and its winch until recently, ship sonars were usually with hull mounted arrays, either amidships or at the bow. It was soon found after their initial use that a means of reducing flow noise was required. The first were made of canvas on a framework, and then steel ones were used. Now domes are usually made of reinforced plastic or pressurized rubber. Such sonars are primarily active in operation. A n example of conventional hull mounted sonar is the SQS-56.Because of the problems of ship noise, towed sonars are also used. These also have the advantage of being able to be placed deeper in the water. However, there are limitations on their use in shallow water. These are called towed arrays (linear) or variable depth sonars (VDS) with 2/3D arrays. A problem is that the winches required to deploy/recover these are large and expensive. VDS sets are primarily active in operation while towed arrays are passive. An example of a modern active/passive ship towed sonar is Sonar 2087 made by Thales Underwater Systems.TorpedoesModern torpedoes are generally fitted with active/passive sonar. This may be used to home directly on the target, but wake following torpedoes are also used. An early example of an acoustic homer was the Mark 37 torpedo.Torpedo countermeasures can be towed or impoverished. An early example was the German Sieglinde device while the Pillenwerfer was a chemical device . A widely used US device was the towed Nixie while MOSS submarine simulator was a free device. A modern alternative to the Nixie system is the UK Royal Navy S2170 Surface Ship Torpedo Defense system.MinesMines may be fitted with a sonar to detect, localize and recognize the required target. Further information is given in acoustic mine and an example is the CAPTOR mine.Mine countermeasuresMine Countermeasure (MCM) Sonar, sometimes called Mine and restriction Avoidance Sonar (MOAS), is a specialized type of sonar used for detecting small objects. Most MCM sonars are hull mounted but a few types are VDS design. An example of a hull mounted MCM sonar is the Type 2193 while the SQQ-32 Mine-hunting sonar and Type 2093 systems are VDS designs. See also Minesweeper (ship)Submarine navigationSubmarines rely on sonar to a greater extent than surface ships as they cannot use radar at depth. The sonar arrays may be hull mounted or towed. Information fitted on typical fits is given in Yoshiro class submarine and Swift sure class submarine.AircraftHelicopters can be used for antisubmarine warfare by deploying fields of active/passive son buoys or can operate dipping sonar, such as the AQS-13. Fixed wing aircraft can also deploy son buoys and have greater endurance and capacity to deploy them. Processing from the son buoys or dipping sonar can be on the aircraft or on ship. Helicopters have also been used for mine countermeasure missions using towed sonars such as the AQS-20AOcean surveillanceFor many years, the United States operated a large set of passive sonar arrays at various points in the worlds oceans, collectively called Sound management System (SOSUS) and later Integrated Undersea Surveillance System (IUSS). A similar system is believed to have been operated by the Soviet Union. As permanently mounted arrays in the deep ocean were utilized, they were in very quiet conditions so long ranges could be achieved. Signal processing was carried out using powerful compu ters ashore. With the ending of the Cold War a SOSUS array has been move over to scientific use.Underwater securitySonar can be used to detect frogmen and other scuba divers. This can be applicable around ships or at entrances to ports. Active sonar can also be used as a deterrent and/or disablement mechanism. One such device is the Cerberus system.Hand-held sonarLimpet Mine Imaging Sonar (LIMIS) is hand-held or ROV-mounted imaging sonar designed for patrol divers (combat frogmen or clearance divers) to look for limpet mines in low visibility water. The LUIS is imaging sonar for use by a diver. Integrated Navigation Sonar System (INSS) is small flashlight-shaped handheld sonar for divers that display range.Intercept sonarThis is sonar designed to detect and locate the transmissions from hostile active sonars. An example of this is the Type 2082 fitted on the British Vanguard class submarines.Uses in daily lifeFisheriesFishing is an important industry that is seeing growing demand, but world catch tonnage is falling as a result of serious resource problems. The industry faces a future of continuing worldwide consolidation until a point of sustainability can be reached. However, the consolidation of the angle fleets are driving increased demands for sophisticated fish finding electronics such as sensors, sounders and sonars. Historically, fishermen have used many different techniques to find and harvest fish. However, acoustic technology has been one of the most important driving forces behind the development of the modern commercial fisheries.Sound waves travel otherwise through fish than through water because a fishs air-filled swim bladder has a different density than seawater. This density difference allows the detection of schools of fish by using reflected sound. Acoustic technology is especially well suited for underwater applications since sound travels farther and faster underwater than in air. Today, commercial fishing vessels rely almost completel y on acoustic sonar and sounders to detect fish. Fishermen also use active sonar and echo sounder technology to determine water depth, bottom contour, and bottom composition.Cabin display of fish finder sonar Companies such as Ray marine UK makes a variety of sonar and acoustic instruments for the deep sea commercial fishing industry. For example, net sensors take various underwater measurements and transmit the information back to a receiver onboard a vessel. Each sensor is equipped with one or more acoustic transducers depending on its specific function. Data is transmitted from the sensors using wireless acoustic telemetry and is received by a hull mounted hydrophone. The analog signals are decoded and converted by a digital acoustic receiver into data which is transmitted to a bridge computer for graphical display on a high resolution monitor.Echo soundingAn echo-sounder sends an acoustic pulse directly downwards to the seabed and records the returned echo. The sound pulse is g enerated by a transducer that emits an acoustic pulse and then listens for the return signal. The time for the signal to return is recorded and converted to a depth measurement by calculating the speed of sound in water. As the speed of sound in water is around 1,500 meters per second, the time interval, measured in milliseconds, between the pulse being transmitted and the echo being received, allows bottom depth and targets to be measured.The value of underwater acoustics to the fishing industry has led to the development of other acoustic instruments that operate in a similar fashion to echo-sounders but, because their function is slightly different from the initial model of the echo-sounder, have been given different terms.Net locationThe net sounder is an echo sounder with a transducer mounted on the headline of the net rather than on the bottom of the vessel. Nevertheless, to bind the distance from the transducer to the display unit, which is much greater than in a normal echo -sounder, several re prettyments have to be made. Two main types are available. The first is the cable type in which the signals are sent along a cable. In this case there has to be the provision of a cable drum on which to haul, shoot and stow the cable during the different phases of the operation. The second type is the cable less net-sounder such as Marports Trawl Explorer in which the signals are sent acoustically between the net and hull mounted receiver/hydrophone on the vessel. In this case no cable drum is required but sophisticated electronics are needed at the transducer and receiver.The display on a net sounder shows the distance of the net from the bottom (or the surface), rather than the depth of water as with the echo-sounders hull-mounted transducer. Fixed to the headline of the net, the footrope can usually be seen which gives an indication of the net performance. Any fish passing into the net can also be seen, allowing fine adjustments to be made to catch the most fish possible. In other fisheries, where the amount of fish in the net is important, catch sensor transducers are mounted at various positions on the cod-end of the net. As the cod-end fills up these catch sensor transducers are triggered one by one and this information is transmitted acoustically to display monitors on the bridge of the vessel. The skipper can then decide when to haul the net.Modern versions of the net sounder, using multiple element transducers, function more like sonar than an echo sounder and show slices of the area in front of the net and not merely the vertical view that the initial net sounders used.The sonar is an echo-sounder with a directional capability that can show fish or other objects around the vessel goodShip velocity measurementSonars have been developed for measuring a ships velocity either relative to the water or to the bottom.Scientific applicationsBiomass regardDetection of fish, and other marine and aquatic life, and estimation their indivi dual sizes or total biomass using active sonar techniques. As the sound pulse travels through water it encounters objects that are of different density or acoustic characteristics than the surrounding medium, such as fish, that reflect sound back toward the sound source. These echoes provide information on fish size, location, abundance and behavior. Data is usually processed and analyzed using a variety of software such as Echo view.Wave measurementAn upward looking echo sounder mounted on the bottom or on a platform may be used to make measurements of wave height and period. From this statistics of the surface conditions at a location can be derived.Water velocity measurem

The Graduate Gilm Analysis

The alumnus Gilm AnalysisThe phrase New Hollywood originally achieved extensive practise to express a new wave of films and four- form-old film trailors that emerged between the mid-to- recent 1960s to the mid-to-late 1970s a phenomenon more(prenominal) frequently regarded as the Hollywood spiritual rebirth. Amongst these infantile directors included Mike Nichols whose massive box office hit The refine (1967), became one of the momentous, landmark films of the period, and easeed to put in motion an innovative modern age of film production. Freshness and originality (traceable to the French New Wave) at bottom an embedded framework of classical Hollywood elbow room could be the most fitting mode to symbolise the formal structure of The Graduate. Having emerged from the post studio era of production, a period when Hollywood was producing a spirited number of successful cutting meet films, The Graduate follows popular trends by setting let on to offer a probing depictio n of American society. Through its mixture of old and new Hollywood rhetorical conventions, The Graduate realistically captures the 1960s agriculture of young personful alienation, disillusionment, opposition to the status quo and middle class set, and the maturation cynicism of a younger generation against the ripened generation.An regalia of industrial factors was significant to both the emergence of young directors wish thoroughly Mike Nichols and the changing content in films of the Hollywood Renaissance. The dec rakehell of vertically integrated companies in concert with a large decrease in cinema attendances, contributed towards the ending of the studio system of production, and opened the gate vogues for a thematically different style of film-making. Consequently, individual packages were assembled a format that gave directors like Nichols more authority, money and freedom to stamp their authority on film projects. Due to these rapid modifications in industrial facto rs, American values were in like manner being challenged. The success of raiseually explicit films like The Man with the Golden Arm, led to an adjustment of the production code. With barriers falling, Nichols was allowed to portray adultery, strifes and near openness in The Graduate. Films no longer had to strictly target the family audience. Hence, Nichols pushed the limits, pushing the restrictions of both stylistic medium, and of taste. The idea of an older married woman (Mrs Robinson played by Anne Bancroft) eagerly seducing a young college graduate almost half her age ( benjamin Braddock played by Dustin Hoffman) was deemed controversial by many older audiences at the time, yet proven really effectual in targeting juvenility audiences. The film was thought of as bringing something new to Hollywood.However, although The Graduate has been bracketed as a product of New Hollywood, it is authoritative to note that most of its word pictures adhere to the classical style of ed iting, mainly because continuity editing and conventional form was a proven successful formula in Hollywood cinema it remained ideal for constructing narratives that were visually uncomplicated to follow. The opening scene of The Graduate is principally con drive by the rules of classical Hollywood style for reasons like this, and so that audiences are presented with a rational believable world. The film begins with a close-up of Benjamin Braddocks face the white background focuses attention on his steely unmoving gaze. The composition of this shot accentuates his look of disillusionment to the audience. It seems he is isolated, but the camera steadily zooms out, revealing him to be on an aeroplane packed with passengers. By cinematography his muted bodily movement on the automatic walkway in one slow extended take, the sense of Benjamins isolation is heightened Nichols is of course shaping up a narrative to reflect the disillusionment of the youth culture of his day, and as we le arn later, Benjamins time to come reservations. Together with the popular non-diegetic soundtrack Sound of Silence, Benjamins mood is absolutely encapsulated within the opening credits.Since the lyrics of Sounds of Silence coincide with Benjamins behaviour, it almost becomes a second language for the film. The song, produced by the folk music duo Simon and Garfunkel, became an instant hit with the youth culture of the 1960s it reached number one on New Years day (1966). In the opening, it matches salubrious with the slow pace and continuity of the scene the solemn edge and dim emotional colouring of the track underline the psychological difficulties Benjamin is experiencing.It is only when the shot of Benjamin exiting the airport dissolves to a shot of him expressing his qualms about future aspirations, that the resumeers are able to distinguish the basis of his psychological commotion.By presenting a conventional older community who dont understand Benjamins troubles, the spect ators build shame towards Benjamin. In this second close up of his face, Benjamin conveys a slight look of apprehension as he tries to explain to his headt out (Mr. Braddock played by William Daniels) of his need to be different. However, Benjamins worries about his future are seemingly ignored. His father seems more concerned about keeping up appearances and persuading his son to attend to the guests of the home-coming caller. This scene draws directly to the 1960s culture of youthful isolation, because like some(prenominal) young individuals of his generation, Benjamin emerged from the safe haven of the college lifestyle, only to feel confounded and extremely hesitating about his future career. His parents, however, spotlight their self-absorbed intentions by coaxing him chargestairs as opposed to understanding his predicament the party just seems like a reason for them to parade their material possessions to their friends. Hence, young people loved the movie because it spiritedlighted their anxieties, and in the process it put down parents as self-obsessed immoral clods who only precept life through the narrow lens of class structure and wealth.Another technique used to represent the oblivious older generation is when the middle-aged guests of the home-coming party find themselves communicating in third person about Benjamin, even whilst he is positioned quite close to them. Combined with their invasive ways (almost pressuring Benjamin into an resolution about his future), none of them truly comprehend Benjamins desires. In looking troubled and hesitant about future goals, Benjamin appears to be resisting the quintessence of the supposed American dream a complete American education, followed by a lucrative career. Like young people of his time, he is finding it difficult to come to harm with the institutionalised adult working life awaiting him. During the party Benjamin is constantly sur move by a swarm of older people who want to adulation his academic achievements or pick upion him about his future this only further adds to his claustrophobic mindset. Even after escaping the middle-aged crowd to refuge of his sleeping room, he is discontinue by Mrs Robinson and feels trapped once more. Within the same shot that Mrs Robinson is being framed in the doorway, Ben is also framed within the world of his fish armoured combat vehicle another symbol of imprisonment that is repeated several times throughout the film. Indeed Benjamin is like a fish himself shy, introvert and feeling wholly in an ocean of emptiness. The classical editing in the opening of the film attains a smooth and faultless style of narration, allowing the sweetheart to effortlessly track the direction of the narrative the viewers can feel the tension created when Benjamins inner conflicts are crossed with a non-understanding older generation.Further continuity editing is used to maintain clear narrative action (a feature of several successful films of the Hollywood Renaissance) as well as build up the moments leading up to the bedroom scene, in which Mrs Robinson will attempt to seduce Benjamin. In an establishing long shot of Mrs Robinsons shack, Benjamin is persuaded to accompany Mrs Robinson inside. As Benjamin enters, he is surrounded by a porch made of all glass, making the environment outside entirely noticeable. The huge trees and thick green bushes outside, give the appearance of a tropical jungle this could be a metaphor to illustrate Mrs Robinsons pursuit of Benjamin. Also, in one of the most infamous frames within a frame shot where Benjamin is framed perfectly under Mrs Robinsons leg, Mrs Robinson again takes on the more dominant position between them she takes up the role of a predator whilst he becomes the young vulnerable prey. These portrayals of a sexually aggressive woman perhaps symbolises how easily the older generation and society can lead a fretful, alter individual astray if he or she deviates from fo rming a meaningful purpose towards life. Benjamin, who is already feeling lost, is caught off guard and becomes easy pickings for Mrs Robinson to take advantage.From an industrial perspective, Mrs Robinsons pursuit of Benjamin is important in establishing her constructed gender role she is neither a liberated woman (who will leave her save and pursue her romantic desires) nor a line upist firm suburban housewife. During the 1960s, women roles were shifting from 1950s image of subservient housewives, to a more rebellious independent role. However, Mrs Robinson plays both the unhappy suburban housewife as well an explicitly sexual woman chasing an affair. She is shown as asserting her authority and sexual prowess over Benjamin, yet is still bound by her sex and dealings with men her representation is a result of the film industrys incapability to cut free from the conventional portrays of women so prevalent throughout the history of early Hollywood cinema. Julia Anderson states, M ost viewers were not interested in watching, and Hollywood was not interested in funding a determined woman as a popular fe young-begetting(prenominal) lead. Thus, Mrs Robinson is a gripping protagonist one of the most renowned in Hollywood, in fact, but when her character is measured in cost of gender depiction, it is plain to see she is not gripping because of her accomplishments, but because of her villain like role. And her whole story circulates around her relationships with a member of the opposite sex as a result she remains a fe virile character that is defined by her association with a man, instead of her own defiant or heroic actions.The extent of Mrs Robinsons overwhelming sexual needs bears resemblance to the dissatisfied, sexually frustrated housewife described by Betty Friedan in her Feminine mystique (1963). Although Mrs Robinson had been pressure into spousal relationship as a result of becoming pregnant, she is put in a hopeless position to escape the marriage, possibly since she has become financially dependant on her husband. In having conformed to the archetypal housewife role rather than pursuing a professional career, it could be argued that she has become consumed by the feminine mystique a lifestyle which careless(predicate) of true love keeps women, in many cases, interested due to the wealth of material possessions and money they receive. In Mrs Robinsons case, the combination of a loveless relationship and saturnine housewife commitments makes her more field of study to an increased sexual appetite. Thus, Mrs Robinson only engages in the affair to use Benjamin as defence mechanism to bring herself out of her miserable existence within marriage.The cinematography techniques used to capture Mrs Robinsons growing sexual desires for Benjamin, are utilisations of a move away from classical Hollywood style the lightning fast cuts and other disorientating effects in the bedroom scene create the feeling of restiveness, impatience and a great sense of sexual hunger on Mrs Robinsons part. One of the reasons in using discontinuity techniques was because it was a study component for films deserving to be categorised as part of a new wave or renaissance. In this case it is effectively used to represent the turning point in the film not only does it highlight Mrs Robinsons sexual urges, but the fast editing simultaneously reflects the growing tension and awkwardness on Benjamins part. This time he is framed over Mrs Robinsons shoulder and it is clear to detect his uncomfortable reactions when presented by the fully unclothed Mrs Robinson. By applying a slow opening to The Graduate and contrasting it with these bursts of rapid cuts, the visual impact of the seduction is made much greater to the audience the full force of Mrs Robinsons desire is projected onto the viewer, who up until now has been comfortable experiencing the largely unnoticeable style of editing. Films like The Graduate and others of the Hollywood Renaissance period aimed to move away from directing entire films via strict continuity regimes they aimed for a newer exciting dimension of stylistic techniques and current gimmicks to reflect characters emotions. The fact that Benjamin is emotionally at a crisis himself, makes the subsequent affair with an older married woman all the more worthless.The whole feeling of worthlessness surrounding the affair between Mrs Robinson and Benjamin is brilliantly captured in the musically backed montage, a segment that uses rapid editing and special effects a more direct use of discontinuity style thought to have been borrowed from the films of the French New Wave (La Nouvelle Vague). During the montage, one scene is edited so that it appears Benjamin is drifting between his parents house to the hotel room he shares with Mrs Robinson. Afterwards, in a disorientating match-cut, Benjamin is shown climbing up onto his home swimming pool raft and landing on top of Mrs Robinson in the hotel bed they share perhaps another symbol to symbolise Benjamins downward spiral in life, and his plunge to new lows by partaking in the affair. Within the several jarring cuts that show Benjamin walking back and forth into these separate spheres, the non-diegetic soundtracks Sound of Silence followed and April Come She Will play in the background in illustrating compressed narrative information within the montage, the sequences of events highlights their loveless affair, and demonstrates how Benjamin is submitting himself to Mrs Robinson in order to block out the purposelessness and bleakness of his life over the summer. Nichols purposefully contradicts continuity here to stamp his mark on the film in borrowing successful elements of the French New Wave, he is able to add that major ingredient of innovation so important to films in and around his period, and use it portray the feeling of youth disillusionment manifest in his society.It could be also argued that the increased discontinuit y techniques in the musically backed montage have a more political purpose rather than merely reflecting character moods. By having a more jarring sporadic style of editing, viewers becomes more alert to messages in the film, and start to question dominant ideologies in society. In this case, Benjamins refusal in submitting to neither the plastics world of the older generation or any other city profession shows his rejection of the status quo and middle class ideals a similar rejection shown by the youth rebellion of the 1960s. More concern in emphasised on Benjamins need to belong and find his identity as opposed to following the traditional way of American life fulfilling his education and entering a commercial, corporate based occupation.Through Benjamins almost robotic, strained replies to his father questions, he is resisting the standardised American way of living in hopes to search for a more fulfilling existence. Thus, his feelings of aimlessness directly reflect the youth generation of the time who equally drifted for prolonged periods of time whilst assay to determine an aim in life. Benjamins feelings of discontent are justifiable because as Friedan would argue, many young men who willingly conformed to corporate life in the late 1960s realised that the purposelessness of their work kept them from feeling like men. For reasons like these, Benjamin refrains from following the old-fashioned way of living that his parents have occupied. preferably he enters a passionless affair and drifts around at his parents pool as a form of escapism.Pushing narrative boundaries and including illicit representations of sex in the affair between Benjamin and Mrs Robinson were thoughtfully calculated by the film to target the 1960s American youth rebellion culture. In an era when the bowel movement Picture Association of America (MPAA) no longer had the final contribution in the films story, Nichols was free of most strict censorships. This allowed him to openly f orefront facets of the youthful counterculture in doing so The Graduate targeted younger audiences (the major cinema ticket consumers in the late 1960s). Since younger people preferred films that dealt more explicitly with sex, Nichols audience targeting dodge proved very cost effective and ticket sales rocketed with the film earning a box office gross of $105m. Large amounts of that gross match were down to Nichols innovative film techniques which pushed home the feelings of the youth counterculture uncertainty, fear, and a general lack of direction in life.Another reason for Nichols to offer the clear rejection of classical explicit cinematic form (evident in the scenes previously mentioned) was because many film directors who employed such techniques in various scenes of their films were held up in admiration at the time, whilst Hollywood films restricted by conventional narrative flow were condemned. Films like Easy Rider and Bonnie and Clyde were largely greeted with huge su ccess for their innovative trendy stylistic approach. Described as a period of great artistic achievement based on new freedom and widespread experimentation, these new formal styles became very profitable for selling huge box office hits, and helped cement the Hollywood Renaissance a golden age in Hollywood history.Moreover, by using new off the wall techniques, Nichols perhaps shows his desire to be held in the same admiration of previously successful forward thought directors like Alfred Hitchcock, Charlie Chapin and Howard Hawks, who were much-admired for their high film art, and auteur status. Considering the new found freedom that directors of the Hollywood Renaissance had, the films of the period have been mostly understood in terms of the efforts of the artistic auteur. Hence, Nichols too has been regarded as a filmmaker creating his own personal style of directing. For exampleThe scene which celebrates Benjamins 21st birthday is important in establishing the psychological burdens Benjamin is suffering a mindset which mirrors the youth alienation and counterculture of the 1960s. Through avant-garde techniques, Nichols positions the viewers in Benjamins viewpoint (looking out of a scuba diving mask), and forces them to experience Benjamins feelings of entrapment as he makes his uncomfortable transition from a boy to a mature man. Benjamins visions reveal a blurry image of his parents faces this together with muted sounds of the middle-aged crowd could be representative of Benjamin being too caught up in his own thoughts to acknowledge anything, especially the overbearing views of the older generation he wants to block out. As well as moving lethargically towards the pool and finally sinking to the bottom of it, this scene cements the foundation for his growing rebellion towards his elders. Like the youth alienated society of the day, Benjamin prefers to blank out the real world. Before he decides to emerge in front of the birthday guests in his scuba d iving outfit, Benjamins replies to his father are packed by unusually high pitched bleats of apprehension dad can we please talk about this for a second. The anxiety that punctuates Benjamins line deliveries accentuates his uptight frame of mind, and becomes a point of resistance against his parents. Not only does this add to the comedic element of the film, but by presenting comedy in its blackest sort, these instances positions the viewer to laugh at American materialistic values the need to flaunt material wealth as a means of maintaining class hierarchies. The fact that Benjamins father feels the need to highlight the price of the scuba diving mask to the birthday guest only further affirms this.As Benjamin moves sluggishly towards the pool, it is interesting to note the parallels of Nicholass point of view shots with Alfred Hitchcocks they both create a similar feeling of discomfort in the viewer. Like Hitchcock, Nichols too questions the root of regular human behaviours by a ligning the viewer to the protagonists dissenting action through point of view. The increased volume of Benjamins breathing appears to be a sound which transcends from realism to expressionism and it fits in well with Benjamins troubled mood. In this way viewer feels they are partaking in scopophilic and often pervasive acts, sharing a strong bond with Benjamin. As continuity editing paints a more naturalistic ordered world, these avant-garde techniques can be viewed as mirroring the disordered society of the 1960s- youthful alienation and rebellion to middle class norms.Moreover, Benjamins behaviour and strained replies to his father are significant in establishing Benjamins identity crisis an issue which reflects the gender crisis of the 1960s. During the 1960s, new notions about maleness were starting to surface the counterculture sought to change over the traditional one dimensional understanding of man. In contexts to Benjamins world, he encounters the suburban middle-class ideas of the older generation and their traditional understanding of manhood a well rounded education, followed by a future in plastics. However, by rejecting this lifestyle in hopes to seek his true identity, Benjamin models himself on the modern image of the American male one who has a greater vision as opposed to conforming to the rather straightforward life presented to him by his father one that he is readily expected to lead. Just like in The Graduate, the older generation of Nichols time did not recognize that the gender roles for men were changing it was only due to the growing counterculture asserting new attitudes towards gender that finally produced a young politicised generation who were on the lookout for their true individuality. The film thus mocks the traditional views of the older generation, particularly the materialistic wealth and snobbery that Benjamins father constantly parades to his friends.In addition to the changing gender roles of the 1960s, Dustin Hof fmans projection of a wholly different type of masculinity in The Graduate could be down to industrial factors. In a period when the industry was in flux, older notions of star power as highly desired commodities were concurrently on the decline the rebirth of Hollywood cinema in the mid-to-late 1960s provided room for new stars to be born. This allowed Nichols to move away from limning the traditional male hero one who was physically imposing, clearly motivated by an aim, and a man of more action rather than words. Nichols, on the contrary, presents the viewer with a male hero (Benjamin) who is small, introvert, awkward, indecisive, and feels lost throughout the film. As The Graduate was entering Hollywood cinema at a time where films were projecting high innovation, it could be argued that Nichols opts to go for something new in his characters to represent this trend. In the process he undermines classical narrative convention by portraying a male hero who has no clear motivatio ns. Therefore as well as reflecting the changing gender dynamics of the period, Nichols gives rise to a new kind of star impersonation in his male hero.Moreover, Katharine Rosss character Elaine (the daughter of Mrs Robinson and Benjamins true love) also reflects the changing gender attitudes of the 1960s. At a time when the womens movement was gathering in strength, so the depiction of women in Hollywood cinema was also shifting. By ultimately rejecting the prospect of a mundane marriage and suburban lifestyle, Elaine liberates herself from the lifestyle forced on her by her parents she shows herself to be capable of making decisions about her future. However, in choosing to marry Benjamin, Elaines representation reflects how marriage was still deemed imperative to the fulfilment of femininity in the 1960s. Nonetheless, the educated Elaine thinks independently, and like Benjamin, she chooses to abandon the older generational norms in favour for her self-fulfilment and romantic desi res. The institution she attends for her college education (Berkeley) is also an important place for constructing her forward thinking mentality since it was the centre of radical movements including class, gender and politics. By ending the film with Elaines romantic escape, the film stays also stays in touch with the 1967s year of proclaimed summer of love.Even though there is a slight change in the gender roles for the female protagonists, the women in The Graduate still conform to ingrained patriarchal norms, thus making the film a product of its time. The 1960s was a period where the second wave of feminism was gaining momentum, however in the face of these changes, inequality between the sexes remained accordingly, the Hollywood industry only made minor adaptations in female character roles to reflect this. Benjamins mother and Mrs Robinson still wait a feminine role, acting as subservient counterparts to their working husbands, and although Elaine is an educated woman, her p art in the story is mainly as a foil to Benjamins quest for identity. Moreover, in the shots of Mrs Robinsons legs and semi naked body, she can be viewed as what Laura Mulvey would state, an object of the male gaze. The leopard print coat which Mrs Robinson wears on her first meeting with Benjamin at the hotel is an important animal motif representative of her sexually predatory nature she adheres to the voyeuristic erotic pleasures of the male audience. Although it can be argued Mrs Robinson is an assertive sexual subject in her own right, the counter argument would assert that she merely upholds sexual power over a physically petite, self-conscious, unconfident young man one whos young enough to be her son. In casting two aesthetically attractive women protagonists in Mrs Robinson and Elaine, The Graduate becomes another film of its time which fulfils the neurotic needs of the male egoFurthermore, the affair between Mrs Robinson and Benjamin is mainly a manifestation of an old fa shioned male fantasy having a sexual affair with an older married woman. From this viewpoint, The Graduate places constraints on its radicalism and rather offers a constructed form of narrative experimentation in order to attract widespread audiences. By depicting this male fantasy, the film once again lives up to patriarchal norms.Due to the patriarchal norms of the time, The Graduate also keeps in conventional Hollywood custom by naturally focusing on a male protagonist in the narrative. The entire film revolves around Benjamin and, in typical fashion, the focus remains on his character development, identity struggle (making the adjustment from youth to adulthood), and the sexual relationships he gets caught up in. Mrs Robinson and Elaine, who are the key women protagonists in the narrative, are only defined in their sexual relationships with Benjamin. This demonstrates the Hollywood industrys tendency to heavily rely on the individuality of a male hero. The major success of The Graduate just became another platform for the industry to persist with notions of a male hero, whilst female characters had constraints on their freedom and remained mostly marginalised.Nonetheless, Elaine does have a good measure of freedom, and it is perhaps this along with her youth which make the psychologically and sexually suppressed Mrs Robinson jealous of her consequently Mrs Robinson perhaps has an affair with Benjamin to reclaim her lost youth. To her, Benjamin provides the only escape of happiness in an otherwise dreary traditional suburban housewife life with a man she no feelings for. When the audience are made to realise Mrs Robinson and her husband share separate beds, one becomes conscious that they merely live under the false pretence of a happy marriage to keep up appearances in a rigid class structured society. It is aspects like these with which The Graduate is attacking the conformist ideals attached to middle-class values. Due to the dispirited, biting sati re of the film, one cannot help but find the whole situation amusing, especially the dialogue regarding the moments Mr Robinson discovers the affair in Benjamins defence he says, it didnt mean anythingwe might just as well have been shaking handsI dont love your life, I love your daughter sir to which Mr Robinson replies, As far as Elaines concerned, you are to get her out of your unsportsmanlike mindand thats all Ben, youll pardon me if I dont shake hands with you. Benjamins awkward, spontaneous replies are so absurd that one cannot help but laugh. The interchanging comments between them fend for the many comic moments of the film comedy gives an effective platform to mock the societal values of the traditional American people a direct example of this is when Benjamin, in his lifeless monotone voice replies no sir to Mr Robinsons question about whether Benjamin respects him. The films ability to confine all these serious moral issues into dark humour reflects the growing confide nce of filmmakers, and the freedom that allowed them to assemble contentious film projects around multiple genres.Overall, although the period of transition in the Hollywood industry during the mid-fifties and sixties bought much needed freedom to filmmakers, The Graduate still remained an industrial product the film speaks to a incessant helplessness in the world, and inability to change and to create change for example, when The Graduate does portray action, it is performed by an isolated hero in a particularly antisocial method (going against societal norms and traditions), further establishing that true(a) change, collectively carried out, is unattainable. Even though Benjamin and Elaine escape together in a typical happy ending, they do it at the expense of leaving their families buttocks after everything, the final shot of them staring blankly into space is an uncomfortable one, especially Benjamin who produces the same look of disillusionment like the one in the opening of the film. Nichols does very well in artistically capturing the themes of the 1960 counterculture however, in a commercially dominated industrial sphere, Nichols is inevitably indebted to stay within the constraints of total freedom of expression because he needs to get the film funded. By using calculated methods of visual experimentation and having a very constructed radical plot, The Graduate ensures economical success and with it, the widespread appreciation of the film from audiences.

Loss of Consciousness from Brain Injury Versus Amnesia Essays -- Biolo

Loss of Consciousness from outlook Injury Versus Amnesia Brain injuries have been traditionally classified as mild, moderate and severe based upon the duration of loss of consciousness and memory. More recently these classifications have been reconsidered based upon the duration and severity of amnesia (4).. How weed you measure loss of consciousness and memory? How does the length of amnesia better predict the severity of a brain psychic trauma versus the traditional method of classifying brain injury based upon the length of loss consciousness? Head trauma is by far the most common wooing of amnesia, but the condition often goes unrecognized as patients more serious medical problems become the foremost concern (3).. Traumatic amnesia is brain vituperate caused by a severe non-penetrative blow to the head, such as in a road accident. It bottomland lead to anything from a loss of consciousness for a few seconds to coma. During post-traumatic amnesia, a patient usually fails to remember not only the accident, but also all information learned for several years earlier the brain injury. A severe blow to the head is likely to cause loss of consciousness lasting seconds up to months. This state of puzzlement and confusion can pass with time for many cases (1).. A brain is exposed to injury as a result of external forces, which are directed to the head. Those forces can allow a blow to the head, the head hitting something, and a rapid acceleration/deceleration movement, such as whiplash (2).The extent of brain injury can be classified as either a state resulting in coma or not. This distinction is used not because the ultimate outcomes are inevitably different, but because coma resulting in a head injury can evoke the vigil between life and death.... ...for everyone (1,2). WWW Sources1)Anatomy of a Head Injury, rendering http//www.ahs.uwaterloo.ca/cahr/headfall.html2)Welcome to the Brain.com, http//www.brain.com/brain/3) Traumatic Brain Injury , http//cour ses.smsu.edu/jas188f/316/TBI.htm4) Loss of Consciousness http//subtlebraininjury.com/noloc.html5)What is Amnesia?, http//serendip.brynmawr.edu/bb/neuro/neuro01/web1/www.psy.ohio-state.edu/psy312/amnesia2.html6) Story about Amnesia , http//news.bbc.co.uk/hi/englsih/health/medicalnotes/newsid167000/167771.stm7) Amnesia , http//www.u.arizona.edu/pdavidso/amcog.html8) Children with amnesia draw and quarter new light on memory and learning?, http//www.psy.ohio-state.edu/psy312/amnesia2.htmlhttp//expressindia.com/ie/daily/19970720/20150363.html9) About Traumatic Brain Injury, http//www.tbidoc.com/Appel12.html

Essay on Camus’ The Stranger (The Outsider): World Without Purpose

World Without Purpose in Camus The Stranger (The Outsider) In The Stranger, Albert Camus misleadingly portrays his existentialistic views of life, death, and the world. Camus portrays the world as blotto or without purpose Meaursalt, who, as a reflection of Camus, is foreign and indifferent to his own life and death. Meaursalt eventually senses guilt for his crime, not because of the remorse of taking individual elses life, but because it means he would lose the little things that he considers important in his life. Meaursalt is a puzzling character, who leaves readers to be uncertain about Camus views of life. Meaursalt is a honest and ordinary man living in French Morocco. Neither intellectual nor emotional, when his mother died, he did not feel or show whatsoever sorrow. He is a character rather distracted by his surrounding, such as people walking by and nature. He would feel much fervour whenever the sun would shine red and bright. On a thoughtless walk on the beach, he e nds up killing an Arab (who had a hostile relationship with his friend) for no apparent reason, but because his Arab blade light reflected by the sun. In addition, for no good reason he shoots four more times, the body lying on the ground. He is tried in court, during which he feels he is his own spectator. Meaursalt gets convicted of murder and sentenced to death. Before execution, he feels guilt for the first time because he would miss the simple things in life. However, he is never scared to die, because for him death comes eventually. Just before the execution, a chaplain tries to make him believe in God, but Meaursalt angrily defends his atheistic views. Meaursalt is an rarified character that prefers simpl... ...t sure whether to say it is objective or subjective. The novel itself is a puzzle to me and Im not in any pursuit to go out it out. Im not refusing to, but I find no point in doing so. The same way Meaursalt work ons life as meaningless, I treat it the same way, but that life is meaningful. We dont need to go searching too hard that in the process we give up on life, as I see Meaursalt as. I think you could have a meaningful life without knowing the meaning. I cant accept Meaursalts values, because I do believe in a God and an afterlife. That is the difference between him and me. I would not recommend this book to anybody who is in the process of individual searching. It is a confusing yet an unique story to be regarded only as Camus point of view of life. Works CitedCamus, Albert. The Stranger, trans. Mathew Ward. New York Random House, Inc., 1988.

Personal Communication Equipment (PCE) Expansion To The U.K. - Politic :: essays research papers

This document will address two questionsThe first is whether the political organization of the United Kingdom is homogeneous enough to the United States that Americans would adapt and work comfortably there, and secondly, if the United Kingdom has a history of political constancy (how long), and is likely to continue for at least(prenominal) 10 years in the future. The answers to these questions will be used to determine marketing potential for the introduction of personal computing products to include a meshing infrastructure, manufacturing facility, and a personnel staff of 250 employees.Preliminary U.K. information indicates the following* 186 Personal computers* 503 Telephone lines* 612 Televisions* 1433 RadiosThese indicate a good market sh are for potential guest base.----------------------------------------------------------------------Parliamentary Democracy with 2 party systemHigh Adult literacy (99%)Rising annual growth rate of GNP since 1995Major Language is slopeA dequate ship and air commerce facilitiesThese address stable political and economic presence, and will require further study to determine future stability in ten years.The initial information above made the United Kingdom a choice candidate for this research. The detailed answers to the 2 main questions are addressed in this report.Question A Is the political organization of the United Kingdom similar enough to the United States that Americans would adapt and work comfortably there?The United Kingdom is a Parliamentary Democracy based on a two-chamber system. The House of Lords (the upper House) and the House of Commons (the lower house) sit singly and are constituted on different principles. The legislative process involves both Houses, with the House of Commons being the legislative branch, and House of Lords revising legislation and charge a check on Government by scrutinizing its activities. Parliament has a maximum duration of five years, and at any time up to the wind up of this period, a general election can be held for a new House of Commons. The Executive power is that of Prime Minister who is the leader of the party that wins the most seats at a General Election. The Prime Minister has powers to appoint judges such as the Lord Chancellor , create Life Peers and overhear appointments to senior positions in the Church of England. There is also a Constitutional Monarchy, which for the most part is symbolic as a result of the Bloodless novelty of 1688 . There are currently three political parties in the United Kingdom. Of these three, the Labour and Conservative are the major parties, while the Liberal Democrats (center party) are a minor party.