Globalization Essay Example | Topics and Well Written Essays - 750 words - 5

Globalization - Essay Example The youth society exhibit the likelihood of being affected more by globalization because of the dynamic thinking that governs youth. Globalization has resulted to the formation of new youth cultures that were not perceived in the traditional setting. This paper will describe the effects of globalization on the emerging new cultures. Globalization serves to transform a society from a traditional setting to the level of a modern society. Culture determined the identity of many people in the traditional setting, as well as the kind of relationships developed by those people. However, globalization introduces new systems such as modern education, transport, and communication systems that have the potential of imparting change on the traditional communities. Evidently, the focus on the youth and the ways in which globalization transforms their lives reveal interesting patterns that can are of critical value in anthropological analysis. This paper will consider the emerging ideologies of i dentity exhibited by the by the youth, and how the marketing systems have focused on the youth as a target market for different products because of the modern consumerism patterns (Kjeldgaard and Askegaard, 2006). Globalization and globalization have altered the youth’s perception of the self. ... Globalization has presented the youth with an opportunity to experience this phase of life amidst a surging increase of media content. Many of these youths face the challenge of role models in from the older generations, and the increasing dynamics in the current trends serve to increase the uncertainty with which they approach life. The youth culture has plunged into a crisis of identity as globalization takes toll on societies. The cultural setting has affected the reception of the emerging trends, defining unique youth identities in each cultural unit (Kjeldgaard and Askegaard, 2006) Over time, the change in identity perception seems to be adopting an individualized manner, while in other cases; the change affects a certain cultural setting. Evidently, some youths have exhibited the capacity to define individual identity. In other cases, globalization motivates the youth of a certain culture to exhibit certain attributes in a collective manner. Globalization has given rise to incr eased media forms and a diverse range of media content targeting different people in any society (Alim, 2011). The media has been keen to supply the youth cultures with content that captures their attention. The media has altered the perception of identity among youth cultures because of its ever increasing influence. From different media forms, the youth become consumers of the new ideologies defining aspects such as dressing, and fun activities, factors that have affected self –perception and hence their identity (Kjeldgaard and Askegaard , 2006). There is evidence that the identity of youth cultures depends on the stage of post-colonial period that defines each society. The rate of modernization determines the extent of change of the ideologies that define

Math in Aviation Essay Example | Topics and Well Written Essays - 1000 words

Math in Aviation - Essay Example Drag is the normal friction caused by the plane moving through air molecules. Drag is also a reaction to lift and this lift must be generated by the wings of the airplane in flight. Newton's First Law of Motion: An object at rest will remain at rest or an object in motion will continue in motion at the same speed and in the same direction, until an outside force acts on it. For an aircraft to taxi or fly, a force must be applied to it. It would remain at rest without an outside force. Once the aircraft is moving, another force must act on it to bring it to a stop. It would continue in motion without an outside force. This willingness of an object to remain at rest or to continue in motion is referred to as inertia. Newton's Second Law of Motion: If a object moving with uniform speed is acted upon by an external force, acceleration will be directly proportional to the amount of force and inversely proportional to the mass of the object being moved. The motion will take place in the direction in which the force acts. Simply stated, this means that an object being pushed by 100 pounds of force will travel faster than it would if it were pushed by 50 pounds of force. A heavier object will accelerate more slowly than a lighter object when an equal force is applied. Newton's Third L Newton's Third Law of Motion: For every action (force) there is an equal and opposite reaction (force). This law can be demonstrated with a balloon. If you inflate a balloon with air and release it without securing the neck, as the air is expelled the balloon moves in the opposite direction of the air rushing out of it. Bernoulli's Principle: When a fluid flowing through a tube reaches a constriction or narrowing of the tube, the speed of the fluid passing through the constriction is increased and its pressure is decreased. Lift: The lift force of a wing is derived from the independent action of its upper and lower surface. Aerodynamics is the study of the forces that let an aircraft fly. Motion is changing place or position. Air has no force or power other than pressure when it's motionless. When air is moving, its force becomes apparent. A moving object in motionless air has a force exerted on it as a result of its own motion. It makes no difference in the effect whether an object is moving in relation to the air or the air is moving in relation to the object. Newton's first and third Laws of Motion explain why deflecting the air downwards must result in a corresponding upward force. The air moving over the upper surface of the airplane is forced too travel farther, therefore velocity is increased. The increase in velocity caused a decrease in pressure. This causes lift in the upper surfaces. The air that passes beneath the airfoil has less distance to travel, this results in increase in air pressure on the lower surfaces and in decrease in air pressure on the upper surfaces. The total lift produced by the airfoil is equal to the difference downwards. The wing is said to have a relative angle of attack. The lift drops off at high angles of attack because the air instead of flowing smoothly over the upper surface breaks away from it and forms eddying currents. Gravity: Gravity is natural force acting upon the airplane. Gravity is the force that plays an

How Are Pistons Made Engineering Essay

How Are Pistons Made Engineering Essay There are different ways of doing the pistons and they all aims to achieve the lighter piston with least friction. Some of these are explained as follows: Cast piston is used for light-duty. The cast surface tells us this piston wont stand up to extremes of temperature and rpm because the molecular structure isnt as tight as it is with hypereutectic and forged pistons. Die-cast pistons are made by pouring molten aluminium into a mould. Then, the piston is machined into a finished product. Hypereutectic pistons are little more than a die-cast slug with a high silicone content. This makes the surfaces harder and shinier. It also changes the expansion properties, allowing you to run tighter piston-to-cylinder-wall clearances. You can run a hypereutectic piston a lot harder than you can a cast unit. The high-silicone content gives the hypereutectic a forged appearance. Note the huge valve relief for those Cleveland intake valves. Forged pistons are more involved, and, certainly, more expensive to make. Instead of a simple mould, we need a giant press, which rams the aluminium into a complex mould under high pressure. Machining forged pistons is no small feat. It is both time consuming and expensive. The forged piston advantage is greater strength, harder surfaces, more predictable expansion properties, and virtually no porosity. Another advantage to forged pistons is the ability to make them lighter and with less skirt. We can do this because forged pistons are stronger. We can machine more meat out of them without suffering structural losses. Forged pistons have a distinctive look, with an extra-hard surface and machining marks. These are what you go with when high rpm and high heat are expected. If youre running nitrous or supercharging, theyre mandatory. Piston technology has come a long way. Computer-aided design and CNC machining technology has made it possible to make custom pistons for just about any application you can think of. With this technology has come lighter pistons with less skirt that offer less friction. Piston Design: Piston design and shape greatly effect how an engine performs. When pistons are too heavy, we lose power. Design in too much skirt, and we lose power through excessive friction. Too little skirt, and the piston becomes unstable. Shoehorn in too much displacement, push the wrist pin into the ring grooves, and you have a formula for piston failure because this exerts too much heat on the pin and boss. In the dreamy world of piston science, we dream of the perfect pistonthe piston that creates very little friction (drag), weighs very little, carries just the right amount of oil up the cylinder walls, and provides a perfect cylinder seal. In the real world, it is nearly impossible to achieve all of these elements at once. http://www.mustangandfords.com/techarticles/mufp_0505_piston_fundamentals/piston_selection.html Piston Engine: A reciprocating engine, also often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion. This article describes the common features of all types. The main types are: The internal combustion engine, used extensively in motor vehicles, The steam engine, the mainstay of the Industrial Revolution, The niche application Stirling engine. Piston Make: The current problem is that there are two pistons with failure; the author here is doing analysis and investigation on the tow pistons trying to find the root causes for this problem and how to avoid this to happen again next time. Those tow pistons are parts in a marine diesel engine made by a German company called MAN Diesel Turbo. MAN Diesel Turbo is one of the worlds leading suppliers in its various fields. From pleasure yacht engines to four-stroke engines for giant container ships, from emergency power units  to turnkey diesel power plants, from single compressors and turbines to complete machine trains for various industrial applications. The engine for the piston is a marine engine with product number L20/27. In theory, diesel engines are internal combus ­tion engines designed to convert the chemical energy available in fuel into mechanical energy. This mechanical energy moves pistons up and down inside cylinders. The pistons are connected to a crankshaft, and the up-and-down motion of the pistons, known as linear motion, creates the rotary motion needed to turn the wheels of a car forward. Diesel engines covert fuel into energy through a series of small explosions or combustions. explosions happen In a diesel engine; the air is compressed first, and then the fuel is injected. Because air heats up when its compressed, the fuel ignites. The diesel engine uses a four-stroke combustion cycle . The four strokes are: Stroke 1 of 4 Suck: Intake stroke On the intake or induction stroke of the piston , the piston descends from the top of the cylinder to the bottom of the cylinder, reducing the pressure inside the cylinder. A mixture of fuel and air is forced by atmospheric (or greater) pressure into the cylinder through the intake port. The intake valve(s) then close. The intake valve opens up, letting in air and moving the piston down.  ­ Stroke 2 of 4 Squeeze Compression stroke: With both intake and exhaust valves closed, the piston returns to the top of the cylinder compressing the fuel-air mixture. This is known as the compression stroke. The piston moves back up and compresses the air. Stroke 3 of 4 Bang Combustion stroke: While the piston is at or close to Top Dead Center, the compressed airà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬fuel mixture is ignited, usually by a spark plug (for a gasoline or Otto cycle engine) or by the heat and pressure of compression (for a diesel cycle or compression ignition engine). The resulting massive pressure from the combustion of the compressed fuel-air mixture drives the piston back down toward bottom dead center with tremendous force. This is known as the power stroke, which is the main source of the engines torque and power. As the piston reaches the top, fuel is injected at just the right moment and ignited, forcing the piston back down. Stroke 4 of 4 Blow Exhaust stroke: During the exhaust stroke, the piston once again returns to top dead center while the exhaust valve is open. This action evacuates the products of combustion from the cylinder by pushing the spent fuel-air mixture through the exhaust valve(s). The piston moves back to the top, pushing out the exhaust created from the combustion out of the exhaust valve. Remember that the diesel engine has no spark plug, that it intakes air and compresses it, and that it then injects the fuel directly into the combustion chamber (direct injection). It is the heat of the compressed air that lights the fuel in a diesel engine. In the next section, well examine the diesel injection process. Lubrication cooling Medium-alkaline lube oils have proven to be suitable for lubricating the power train, the cylinders, the turbocharger and, if the facility is provided, for the cooling of the pistons. Such medium-alkaline lube oils contain additives which, amongst other things, provide them with a higher neutralization capability than is the case with blended (HD) oils. Basic oil The basic oil (medium-alkaline lube oil = basic oil + additives) must be a narrow distillation cut and must be refined according to modern methods. Bright stocks, if contained, must neither adversely affect the thermal nor the oxidation stability of the basic oil Medium-alkaline lube oil The basic oil with additives have been mixed (medium-alkaline lube oil) must demonstrate the following characteristics: The additives must be dissolved in the oil and must be of such a composition tat an absolute minimum of ash remains as residue after combustion, even if temporary operated on distillate fuel. That ash must be soft. If this prerequisite id not complied with, increased deposits are to be expected in the combustion chamber especially at the outlet valves and in the inlet housing of the turbochargers. Hard additive ash promotes pitting on the valve seats, as well as burnt-out valves and increased mechanical wear. Additives must not cause clogging of the filter elements, neither in their active nor in their exhausted state. The cleaning capacity must be so high that coke and tar-like residues occurring when fuel is combusted must not build-up. The dispersing capacity must selected such that commercially available lube oil cleaning equipment can remove the combustion deposits from the used oil, i.e. the used oil must possess good separation and filtration properties. The neutralization capacity (ASTM-D2896) must be so high that the acidic products which emanate during combustion are neutralized by the lube oil consumption of the engine. The reaction time of the additives must be matched to the process in the combustion chamber. The tendency to evaporate must be as low as possible, otherwise the oil consumption is adversely affected. The lube oil must not form a stable emulsion with water. The lube oil must not contain agents to improve viscosity index. The fresh oil must be free from water and other contaminants.

The Handmaids Tale - Social Situation :: Handmaids Tale Essays

The Handmaids Tale - Social Situation Margaret Atwood's novel The Handmaids Tale belongs to the genre of anti-utopian (dystopian) science fiction where we read about a woman's fictive autobiography of a nightmarish United States at the end of the twentieth century when democratic institutions have been violently overthrown and replaced by the new fundamentalist republic of Gilead. In the novel the majority of the population are suppressed by using a "Bible-based" religion as an excuse for the suppression. How does this work and why can the girls, the so called Handmaids, be considered the victims of society? Also, in what way does Gilead use biblical allusions? That is some of the questions this essay will give answers for. To begin with the so called Handmaids are girls who have only one purpose in life which is to reproduce. They are women who when have reached the age and maturity to reproduce have been taken to Gilead where they are tattooed with four digits and an eye (Gilead's tattoo which works as a passport in reverse) which immobilises them, in contrast to the winged male eye which is the state symbol. Then they are re-educated at the so called Red-centre, the name emphasises female sexuality and how they are taught there can be linked with brainwashing. They are told how lucky they should feel because they have been saved from the primitive and cruel outside world where women are being raped and maltreated. Other things they learn are numerous sayings and mottos of the Red-centre like "Pen is Envy" which is based on a Freudian psychoanalytic theory which presents "penis envy" as an essential element of femininity, and a mark of "woman's natural inferiority to men". So knowing this, are they actually better of in Gilead? There they are "valued only in terms of their biological usefulness as child bearers" due to that the birth rate in the society has fallen to a catastrophically low level because of deadly pollution and sexually transmitted diseases which cause sterility and infertility. They are known by their Commanders first names, Of -(name of commander), this to underline their function as sexual objects without individuality. Moreover, apart from being deprived their own names Handmaids are also deprived legal rights.

Family Identity Essay

A person’s identity is often considered a trait that someone is born with, similar to physical traits such as eye color or face shape. In actuality, identity is not something that can be determined by a particular strand of DNA, rather it is something that must be formed throughout a lifetime. Thus, at birth, one’s identity is a blank canvas, ready to absorb knowledge from its immediate surroundings, more particularly family, as it is the first thing a fresh identity is exposed to. As evidenced by Grapes of Wrath, Abraham Lincoln, and The Great Gatsby, one’s identity is primarily determined by his or her family. In Grapes of Wrath, the Joad’s identify themselves with their land, as farming is their only livelihood. Without land to farm, the Joads’s way of life is entirely uprooted; thus, they are forced to change their identities in order to survive. However, this identification with the land is not something each Joad is born with; rather, it is a relationship that is primarily influenced by family. Initially, Ruthie and Winifield, both still young children, do not understand the emotional impact of the Dustbowl on their family. However, as they watch their father, they begin to understand that his land is what makes him who he is, and without it, he is lost. At this point, Ruthie and Winifield’s new identities are starting to take shape as they, too, learn to love the land. Abraham Lincoln, a former president of the United States, grew up in a small cabin to a poor family. He was able to attend school as a young boy; however, the educational system of his rural town in Kentucky put him at a disadvantage to many other politicians he competed against. When Lincoln’s mother passed, he was left to be raised by only his father, whom he gradually became estranged from. However, these disadvantages that Lincoln faced made him the self-motivated and ambitious man he soon became. Had he been raised in a well-to-do family by attentive and loving parents, he would not have been nearly as driven and hardworking, as everything would have been spoon-fed to him. Thus, Lincoln’s family life was the one thing ultimately determined the man he was to become. Lincoln’s absentee father and poor economic situation gave him the will and ambition that allowed him o do great things in the world. In The Great Gatsby, in contrast to Abraham Lincoln, Daisy was born into an extremely wealthy family. In such a family, Daisy hardly ever had the need to lift a finger, as everything was done for her. In addition, this wealth made Daisy a very desirable young woman; thus, Daisy did not often have to work to gain anyone’s approval. Had she been raised in poor family, similar to Abraham Lincoln, Daisy would have been forced to sink or swim on her own, giving her more ambition to succeed. However, due to Daisy’s family life, she grew accustomed to a pampered life lifestyle in which everything was simply handed to her, making her the self-obsessed, materialistic, and lazy person she became. As evidenced by Grapes of Wrath, Abraham Lincoln, and The Great Gatsby, family is what primarily determines someone’s identity. Thus, identity is not some gene-determined trait that is formed prior to birth. It is something that takes shape in the early stages of one’s life, forming accordingly to his or her environment.

Lord of the Flies Symbolism Analysis Essay

Plato, a famous Greek philosopher born in 428 BC, once said, â€Å"The measure of a man is what he does with power.† This statement shows that man will truly be defined for what he does with the power he receives; whether he would use it for manipulation, cruelty and lofty desires, or whether he would treat everyone fairly, maintain democracy and control himself in such a high position. In William Golding’s Lord of The Flies and George Orwell’s Animal Farm, the power is shown and given to a character, which would use it for his own benefits and does not choose to do what is right for those under his power. Jack, a power-hungry dictator, uses his manipulative and deceiving tactics to reign over a group of schoolboys who get stuck on an island. Napoleon, a pig, uses power along with fear to control the other animals around him and asserts violence to get his role as a leader. The desire for power and control in both characters stimulates them to use fear and violence as a way of keeping their high position and satisfying their needs. It is clear that the two leaders Napoleon and Jack both used physical harm as a way of getting their message across to their other citizens. Jack displayed this behavior after he gets his own tribe, where he ruled merciless and punishes anyone he is not pleased with. When Roger and Robert were having a brief conversation in Chapter 10, they said, ‘He’s going to beat Wilfred’. ‘What for?’ ‘I don’t know. He didn’t say. He got angry and made us tie Wilfred up. He’s been†- he giggled excitedly- â€Å"he’s been tied up for hours, waiting-.†(Golding 176). This shows Jack and his cruel use of power among his own tribe. Napoleon, on the other hand, doesn’t punish his own tribe, but does go to an extent where he vows a death sentence towards anyone who is working or wants Snowball to come back to the farm. This is shown in the execution of four pigs, â€Å"Without any further prompting they confessed that they had been secretly in touch with Snowball ever since his expulsion, that they had collaborated with him in destroying the windmill, and that they had entered into an agreement with him to hand over Animal Farm to Mr. Frederick. They added that Snowball had privately admitted to them that he had been Jones’s secret agent for years past. When they had finished their confession, the dogs promptly tore their throats out, and in a terrible voice Napoleon demanded whether any other animal had anything to confess.† (Orwell 73). Despite being a pig, Napoleon shows the same qualities as a human dictator and even goes as far as to making innocent pigs confessing to a crime they had never done. Within both leaders, anger becomes the main reason for punishment to the citizens. Both leaders, nonetheless, use their people for their own benefit whether they were given permission or not. In Lord of the Flies, Jack went as far as to stealing Piggy’s glasses without Piggy’s consent in hopes of being able to make a fire at any time he requests. Regardless of Piggy’s anger and necessity for glasses, Jack steals them and even kills Piggy when Ralph, Piggy, Sam and Eric confronted his tribe for Piggy’s glasses. Along with this situation, in Animal Farm, Napoleon’s desire for power and money drives him towards betraying his best worker who works for him every second he is awake for whiskey money. The animals would work continuously for Napoleon, and this is clear in Orwell’s statement in chapter VI, â€Å"All that year the animals worked like slaves† (Orwell 53).