Education and its Influence on Different Socio-economic Spheres Essay

Education and its Influence on Different Socio-economic Spheres - Essay Example In many societies, education is defined as a pillar of strength, alleviating the masses from ignorance and paving the way toward a bigger and brighter future. Education systems perform a fundamental role in the development of human attitudes and behavior. It directly affects several spheres of day-to-day living from health, gender and democracy to interpersonal relationships, environmentalism and nationality. Education and Health There is considerable evidence that education is strongly linked to health and to determinants of health such as healthy behaviour, risky contexts and preventative service use (Partnership for Child Development, 2013). However, education does not act in seclusion from other factors, such as income. Income is a notably significant factor that interacts in many essential ways with education, as an influencing factor on health. This makes it hard to assess their independent effects. However, empirical investigations often find the effect of education on health is at least as great as the effect of income. Education impacts on health in two ways; firstly through teaching that enables children to learn specifically about health (often known as skills-based health education) and secondly through the educational process as a whole which provides skills such as critical thinking and making choices that enable children to opt for healthy lifestyles (Partnership for Child Development, 2013). ... Certain differences between the two genders are biological; they arise from physical and other differences that are linked to the different genders. In most societies, men and women have different roles and statuses. It’s easy to draw connections between the behaviour of men and women, and the physical differences that we can observe. The conclusion can then be drawn that differences in behaviour can be attributed to physical differences between the two genders and that the differences in their social roles and positions grow out of their different patterns of behaviour, their abilities and limitations (Teachers Talking about Learning, 2002). However, upon review of biology, psychology, anthropology and education, we find that it’s very difficult to prove which behaviours in men and women arise from physical differences. Many differences, we find, could be produced by the different ways that men and women are brought up as children and arguably the education they receiv e. In relation to thinking and learning processes, and consequently the ability to learn, males and females are more alike than different. Education and Sex Evaluations of comprehensive sex education programs show that these programs can help youth delay onset of sexual activity, reduce the frequency of sexual activity, reduce number of sexual partners, and increase condom and contraceptive use. Importantly, the evidence shows youth who receive comprehensive sex education are not more likely to become sexually active, increase sexual activity, or experience negative sexual health outcomes. Effective programs exist for youth from a variety of racial, cultural, and socioeconomic backgrounds. Researchers studied the National Survey of

Social policy and play Essay Example | Topics and Well Written Essays - 2250 words

Social policy and play - Essay Example There are some games universally played by children. Hide and seek which develops inquisitive nature and curiosity in the minds of the children and Police-thief games which is about battle between good and evil are popular among children in different forms of the game. ‘Play’ goes a long way in cultivating good habits, manners and behaviors in a person. Perspectives of Childhood The perspective of childhood is viewed from futuristic angle, ignoring the conditions, needs and changes required from the current perspective. Lesser and Russell stated â€Å"There has been a rapid growth in policy initiatives relating to children and young people and this has been dominated by a perspective which sees children primarily in terms of their and the nation’s future and not in terms of their present lives.† Childhood should not be viewed merely as a ground for preparing them for adulthood. The society tries to intervene in the process with the understanding that the fr amework is set with reference to learning, good habits, behaviors and manners in socializing. Health consciousness is also considered in this framework. However, we need to treat that opportunity to play is ‘childhood right’ though there are the attendant benefits and adult hood is related to childhood. According to Lee (2) â€Å"Whatever differences there may be between adults and children, contemporary sociologies of childhood urge that children be treated equally, at least in terms of recognizing that children have views and perspectives of their own.† The aspect of empowerment to the children is another important perspective. According to Alexander (10) empowerment, â€Å"is what bridges children’s wellbeing, children’s primary education and children’s rights. Empowerment - underpinned, as our child witnesses insist, by equity, empathy and expertise - is an educational cause well worth fighting for.† Social Policy Relating to Child hood â€Å"Alcock (2003) proposes a definition of social policy which suggests that it comprises both academic discipline and also a form of social action.† (Shardlow (14) Children believe they have the talents and courage to become kings. This belief which remains unspoiled till adulthood made many college drop-out students to establish great business empires in history. On the other hand, the seeds of evil take deep roots in their minds due to child abuse or discrimination manifest as cheating, fraud and terrorism in later years.   Study by Henn et al (1160) â€Å"revealed profound differences in the likelihood of criminal convictions or incarcerations between socialized and under socialized delinquents. The socialized delinquents have less chance of being either convicted of a crime or being imprisoned.† Shaping up at 5 is easier than reshaping up at 50. According to Hallett and Prout (83) children have been accorded a central role, both in creation of modern soci ety and the autonomous individual and observed that the contemporary thinking and activities of the associations in child welfare confirm this trend. Play is an important part of children and youngsters. Sutton-Smith views ‘

Water is Life Essay Example for Free

Water is Life Essay The slogan: â€Å"Water is Life,† is so true considering that nature’s life cycle revolves around it. The factuality of the statement can be easily seen in the light of what water is to the environment and how it is being taken for granted for its familiarity. The space that it occupies in and around the earth is so invasive it is almost all-encompassing in its existence. â€Å"It covers around 75% of the Earth’s surface† and is contained deep in the earth’s groundwater reserves called aquifers (Godrej, 2003). Despite that much of life depends on water, its purity essential to all our sustenance is being threatened because humans overuse it. Gone are the days when people simply drink directly from a brook. To secure safe drinking water, it has to undergo certain processes; either distilled or purified. This becomes a huge source of financial profit to big businesses such as the proliferation of bottled waters. But, â€Å". . . once we start using water in excess and beyond the rate which it can be replenished again, we endanger the hydrological cycle† (Godrej, 2003). In First World countries, water is used to beautify gardens, maintain greener lawns, and fill up swimming pools. In California, officials predicted that by 2020, water shortage is a surety due to the way it is being used today in that state (2003). Although many factors affect and cause this water crisis, mainly it is the misuse that causes the water crises. The problems range from water’s scarcity and depletion, lack of sanitation and pollution, inequalities in distribution . . . to extravagant use . . . , etc. (Godrej, 2003). Things that contribute to the world’s water crisis are untouched in this essay. Nonetheless, the reality of this crisis that has crept in the usual order of things in the environment cannot be taken for granted. We need to wise up and save this essential element of life. Reference 1. Crystal, David. 1990. Water H2O. The Cambridge Encyclopaedia. Cambridge University Press, p. 1285. 2. Godrej, Dinar. 2003. Crisis and challenge. Precious fluid. New Internationalist magazine, volume 354, pp. 9-12. 3. New Internationalist called Water: The facts. March 2003. volume 354,p. 18 4. Vidal, John. August 2002. Blue gold: Earths liquid asset. The Guardian, p. 6.

The Ranque-Hilsch Vortex Tube

The Ranque-Hilsch Vortex Tube David Newson Abstract The Ranque-Hilsch vortex tube is a simple mechanical device often used for refrigeration in industrial manufacturing as it requires only a supply of compressed gas. Despite having no moving parts the vortex tube is able to separate the compressed gas into two separate streams – one hot and one cold with temperatures observed in the range of -5 to 55. Different explanations for the processes taking place within the device haven been proposed but there is currently no single accepted theory. A fundamental understanding of the vortex tube and the equipment has been reached and the groundwork has been laid for further experimental investigation and numerical computational fluid dynamic modelling. Introduction The Ranque-Hilsch vortex tube, often referred to simply as a vortex tube, is a mechanical device involving no moving parts that can be used to separate a stream of high pressure compressed gas into two lower pressure streams of varying temperatures. The cold stream is able to reach temperatures as low as -30 ºC whilst the hot stream can reach temperatures of up to 110  ºC [1]. First invented by French physicist G. Ranque in 1933 [2] the vortex tube was unpopular at the time due to its low efficiency and the idea was discarded until 1946, when German engineer R. Hilsch took it upon himself to improve the design [3]. With increased efficiency the vortex tube became an effective and popular spot cooling device for laboratory equipment, cutting tools such as lathes and mills, and other industrial processes. Since then there has been numerous attempts to find ways to further increase its efficiency and fully understand the processes leading to the temperature separation. The processes taking place within the vortex tube are simple to observe, but more difficult to accurately explain and model. It begins with compressed gas entering the vortex tube tangentially through a swirl generator creating an initial vortex inside the tube with rotational speeds of up to 1,000,000 RPM. The vortex moves along the length of the tube until it reaches an adjustable valve allowing a fraction of the gas to escape. The remaining gas is forced back down the centre of the tube, creating a secondary vortex. This secondary vortex has a reduced diameter and is contained within the initial vortex and travels in the opposite direction back along the length of the tube. When the secondary vortex reaches the other end of the tube all remaining gas is expelled through an opening. While this is taking place, energy is transferred from the inner vortex to the outer vortex, causing the temperature of the outer vortex to increase, and the temperature of the inner vortex to decrease. As the gas from the outer, hotter vortex and the gas from the cooler, inner vortex are expelled at opposite ends of the tube the two streams of varied temperature can be directed as required and the ratio of the temperatures controlled by changing the amount of gas allowed to be expelled at the adjustable valve. Figure 1. Initial and secondary vortexes within a vortex tube [4] There are currently different explanations for the temperature separation within the vortex tube with no theory being conclusively proved. It is currently thought that the energy transferred between the vortexes is through friction of the two vortexes rotating against one another but it is unknown whether the gas within the tube experiences â€Å"solid body rotation†, where the angular velocities of the of both the inner and the outer vortexes are the same or if the two vortexes are rotating at different angular velocities. Further investigation into the speed of rotations of the vortexes within a Ranque-Hilsch Vortex Tube will provide greater understanding of the energy transfer. Equipment The experimental set up consisted of a Ranque-Hilsch Vortex Tube, two flow gauges that could be placed at positions A,B or C, two thermo couples, a gate valve and a pressure gauge positioned as shown on figure 2 below. Figure 2. Schematic of experimental setup The vortex tube was supplied by compressed air with a mains pressure of 6.6 bar with the gate valve used to control the pressures and flow rates into the vortex tube. The flow gauges used were rota meters with a range of 30-300 litres per minute. Rota meters are made of a tapered tube with a â€Å"float† inside that is lifted up by the drag force created by the flow of the liquid around it and pulled down by gravity. A higher flow rate increases flow speed and drag causing the float to be lifted higher up the tube, however, as the float is lifted higher up the tube the tube widens due to the taper and the drag force decreases until the float reaches its new equilibrium. The equilibrium can be found using the equation . (1) Where is the mass of the float, is acceleration due to gravity, is the density of the fluid, is the velocity of the object relative to the fluid, is the reference area and is the drag coefficient. With the float in equilibrium the flow rate can be read off scale at a specified point on the float. Due to the simple nature of rota meters they are affected by changes in pressure and temperature and the displayed numbers are only valid at atmospheric pressure and standard atmospheric pressure. Correcting for the effects of pressure (2) Pressures above atmospheric pressure allows greater capacity for a flow meter and the above equation is used to determine the actual flow rate at varying pressures. Correcting for the effects of temperature (3) Temperatures above standard atmospheric temperature decreases maximum flow rate and the above equation is used to determine the actual flow rate at varying temperatures. The flow gauges have an unknown impedance which has to be calculated in order to make sure placing them in the system doesn’t affect the measured pressures nor the fraction of gas expelled through the hot end valve. If it does affect the system knowing the impedance allows corrections to be calculated. The impedance is calculated by measuring the rate of flow through a single flow gauge as a function of pressure. Figure 3. Experimental set up to calculate flow gauge impedance The vortex tube itself has no moving parts and consists of very few pieces. Compressed gas is fed in through the air inlet and as it passes through the generator creates a vortex inside the spin chamber, the vortex propagates along the length of the tube with air exiting out both the hot end valve and the cold end cap. Figure 3. Schematic of Meech Vortex tube [5] The only interchangeable part of the vortex tube is the generator. The generators determine the volume of gas flow through the vortex tube and the fraction of the incoming air that exits in the cold stream – the cold fraction. The cold fraction may also be altered by adjusting the hot end valve. The total flow can be calculated using (4) Where PSIG is pounds per square inch gage. The cooling and heating power in BTUH (British Thermal Unit per Hour) can be found by using the following: For Cooling: (5) For Heating: (6) Where 1 = 0.293W, = cold fraction, = cold airflow, = hot airflow, = inlet pressure, = cold stream temperature, = hot stream temperature Results The impedance of the flow gauges were calculated by plotting flow against pressure and calculating the gradient. Figure 4. Calibration of flow gauges The gradient calculated from figure 4 is which equals The gradient was then used to calculate impedance using (7) This gives a value for the impedance of the flow gauges of acoustic ohms. Figure 5. Temperature of streams as function of pressure Figure 5 shows the relationship between the temperatures of the stream and the inlet pressure. The two trend lines intersect at 0 pressure at 23 which is the temperature of the compressed air before it entered the vortex tube. The gradient of the hot stream trend line is 8.3 and the gradient of the cold stream trend line is -7.8 0.05. This shows the temperature of the hot flow is increasing faster than the cold flow is decreasing suggesting a cold fraction of above 0.5. Figure 6. Flow rates as a function of pressure Figure 6 displays the flow rates at each of the 3 positions A,B and C from figure 2. The flow rate of the cold stream is higher than the flow rate of the hot stream confirming that the cold fraction is above 0.5 as proposed from the findings in figure 5. This figure demonstrates the corrections to the flow rate using equation (2) as before the equation is applied the measured flow rate in (green) is significantly lower than the measured flow rate out (cyan). After the correction is applied the measured flow in (magenta) is equal to the measured flow out. This is based on the assumption that the pressure at the flow gauge in position A is 6.6 bar – the pressure of the mains gas supply. Figure 7. Energy flow rates as a function of pressure Figure 7 shows the rates of flow of internal energy of the gas at points A,B and C calculated by combining the following equations (7) (8) Into (9) Where is pressure, is volume, is number of moles, is the molar gas constant, is temperature and is internal energy. From this figure it seems that no energy is lost from the system and it is simply transferred between the two flows of the gas. This is expected based on the previous result as internal energy is proportional to volume and the volumes of gas flowing in and out of the tube were constant. Discussion After much investigation the temperature and energy separation and rate of flow appear linear as a function of inlet pressure. This was not always the case as for a long period of time the volume of gas measured being expelled by the vortex tube was vastly larger than that being measured entering the tube and the rate of flows were not linear. However, after studying the equipment it was found that this was due to the flow gauges being effected by temperature and pressure. Once the raw data was corrected by taking into account for these varying conditions the data matched up to initial predictions and with far fewer anomalies. The temperature difference of the two streams was observed and; with a cold fraction greater than 0.5 the cold stream was measured to have a higher rate of flow but there was a greater temperature difference in the hot stream from the initial temperature of the gas. The current data suggests that the gas as a whole does not gain or lose any internal energy and that energy is only transferred between the gas from the cold stream to the hot stream, however, this is under the assumption that the pressure at the flow gauge in position A was constantly at 6.6 bar. If this is not the case a slight difference in pressure could reveal changes in the internal energy of the gas which could help explain the processes happening within the tube. Conclusion The equipment has been calibrated and raw data is able to be corrected to provide correct results. Temperature separation has been measured in the range of -5 to 55 with the rate of change of temperature corresponding to the cold fraction of the generator. The internal energy of the gas has been observed to remain constant; transferring only between the cold and the hot stream but there is scope to further investigate this. A basic understanding of the vortex tube has been reached and the groundwork has been laid for further investigation. With further sampling it is hoped the energy separation will be understood in greater detail and that the theory that the gas undergoes solid body rotation will be proved or disproved. Future work Future work will include experimental investigation continuing looking into the transfer of energy within the vortex tube including more detailed analysis of rate of energy flow examining whether the gas loses, gains or conserves internal energy. Different generators of varying efficiencies and cold fractions will be investigated and documented and an attempt to build a probe to determine whether the angular velocities within the vortex tube vary or are constant will take place. Aside from the experimental work computational fluid dynamics will be used to numerically explore the inner workings of the vortex tube by creating a two dimensional computational model of a vortex tube using COMSOL software using the k-ÃŽ µ model to simulate the temperature separation phenomenon. Figure x shows the temperatures of the hot and cold streams achieved by three different generators as a function of flow. The results show that the generators that produce the lowest temperatures have a lower flow rate, this is expected as there is a similar amount of energy separation for each of the generators and you can choose to have a smaller quantity of very cold gas or a larger quantity that is not as cold, or a compromise as desired. This is important as it makes the vortex tube more adaptable for industries using it for spot cooling and the temperature and flow rate can be adjusted as required. References [1] Meech air technology brochure. 2013. http://www.meech.com/resources/362/MAT.pdf [2] G. J. Ranque, â€Å"Experiments on Expansion in a Vortex with Simultaneous Exhaust of Hot and Cold Air,† Le Journal De Physique et le Radium (Paris), Vol. 4, 1933. [3] R. Hilsch, â€Å"The Use of the Expansion of Gases in a Centrifugal Field as Cooling Process,† Review of Scientific Instrument, Vol. 18, 1947. http://scitation.aip.org/docserver/fulltext/aip/journal/rsi/18/2/1.1740893.pdf?expires=1386863841id=idaccname=freeContentchecksum=2218A70412ADD7B3EFBAAC108BCC9ABE [4] http://en.wikipedia.org/wiki/Vortex_tube [5] Meech Static Eliminators Ltd www.meech.com

Elvis Presleys Poor Acting Skills in Film Essay -- Celebrity Actor Ac

Elvis Presley's Poor Talents Paying Bills Elvis Presley, the King of Rock and Roll, is an American Pop Culture Icon who influenced his audience with his commanding voice and dazzling sex appeal. In the 1950's, Elvis devoted his career to singing and making music. In the sixties, however, he dedicated his time towards making movies and appearing in motion pictures. As many critics agree, Elvis had poor acting skills in his films, generally showing apathy and/or dull facial expressions. Yet, through entertainment media, Elvis was able to inspire a generation of youth to "take action" in American society from his "poor actions". Moreover, film in the age of mass media neutralized Elvis' "bad acting" by redirecting the audience's attention towards his dynamic singing and sexual physique, heavily appealing to the social trends of the 1960's decade. In the decade of the 60's, Elvis starred in over 34 motion pictures, averaging more than 3 films released per year. In these films, Elvis generally had the lead role, allowing the center of attention to fall on his shoulders. Unfortunately, Elvis had poor acting skills, usually displaying bland facial expressions or lethargy. According to the New Yorker magazine, Elvis' acting talents were thin: "Thicklipped, droopy-eyed and indefatigably sullen, Mr. Presley, whose talents are meager but whose earnings are gross" (Raaphorst). Thankfully, Elvis had extraordinary singing talents to make up for his poor acting skills. Knowing his strengths, Elvis and his producers began placing songs into his movies to gain a greater acceptance from his audience: "Statistically, he holds records for the most Top Forty hits (107), the most Top Ten hits (38), the most consecutive #1 hits (10) and the most w... ...ire a youth generation to take action in American society. By redirecting his movie audience's attention away from his common acting skills, Elvis was able to successfully increase his popularity from his dramatic singing roles, his sexual attractiveness and his rebellious attitude. Truly, mass media neutralized Elvis' "poor" acting skills and transformed them into a "rich" lifestyle, enabling Elvis Presley to still live large today in the entertainment capital of the world--Las Vegas, Nevada. Works Cited Rock and Roll Hall of Fame Museum. Cleveland, Ohio. 01 November 1999. http://www.rockhall.com/induct/preselvi.html. Yahoo!: Geocities. TCB Ring, Elvis in Hollywood. 31 October 1999. http://www.geocities.com/~arpt/hollywood/nsindex.html. Yahoo!: Geocities. TCB Ring, Elvis in Hollywood. 31 October 1999. http://www.geocities.com/~arpt/hollywood/nsindex.html.

New Jersey Pine Barrens :: essays research papers

Plants make up most of the Pine Barrens. For instance, pine trees such as the short needles, pitch pines, jack pines, long needles, yellow pines, and many others make up most of the pine forest in the Pinelands. Other trees include the pine oaks and the cedar trees. Due to the roots of these cedar trees, water in the Pine Barrens appears a brownish red color. This happens because the roots emit pigments of red color into the soil which then runs into the water. Even though the amount of red pigment released is very little, due to the large amount of cedar trees in the Pine forests, the water is affected. The main crops of the Pine Barrens include blueberries and cranberries. There are also many rare plants that can be found in the Pinelands. One of these is the pitcher plant which is related to the Venus Fly Trap. Plants such as these have an influence on how nitrogen is depleted in the Pine Barrens and also on how the Pine â€Å"Barrens† got there name, nothing like vegetables grow there. The pitcher plant helps prevent pollution from entering the lakes as well as help in preventing flooding. The lakes in the Pine forest are home to the tree frog. These forests are also home to many other animals like cranes, water snakes, turtles, salamanders, and other frogs. There are many dangers facing the Pine Barrens today. The most dangerous is the effect industrialization has on it. Many industries contribute to the mass pollution of water, land, and air. This greatly impacts the ecosystem of the Pinelands and the animals that live in it. Industrialization also leads to the building of more houses that are detrimental to the Pinelands because the Pinelands are being destroyed little by little every day. This ecosystem is too precious to waste, it needs to be preserved. Pollution has caused over forty species of birds to become endangered. Acid rain also causes the extinction of many species. Acid rain is the term used to describe the chemicals that are deposited through the rain. These chemicals travel through the soil and affect many plants and animals. Acid rain is a world-wide problem that concerns all ecosystems; acid rain needs to controlled by limiting the amount of pollution let out into the air. Another major issue affecting the Pine Barren s is forest fires. There are as many as four hundred forest fires per year. New Jersey Pine Barrens :: essays research papers Plants make up most of the Pine Barrens. For instance, pine trees such as the short needles, pitch pines, jack pines, long needles, yellow pines, and many others make up most of the pine forest in the Pinelands. Other trees include the pine oaks and the cedar trees. Due to the roots of these cedar trees, water in the Pine Barrens appears a brownish red color. This happens because the roots emit pigments of red color into the soil which then runs into the water. Even though the amount of red pigment released is very little, due to the large amount of cedar trees in the Pine forests, the water is affected. The main crops of the Pine Barrens include blueberries and cranberries. There are also many rare plants that can be found in the Pinelands. One of these is the pitcher plant which is related to the Venus Fly Trap. Plants such as these have an influence on how nitrogen is depleted in the Pine Barrens and also on how the Pine â€Å"Barrens† got there name, nothing like vegetables grow there. The pitcher plant helps prevent pollution from entering the lakes as well as help in preventing flooding. The lakes in the Pine forest are home to the tree frog. These forests are also home to many other animals like cranes, water snakes, turtles, salamanders, and other frogs. There are many dangers facing the Pine Barrens today. The most dangerous is the effect industrialization has on it. Many industries contribute to the mass pollution of water, land, and air. This greatly impacts the ecosystem of the Pinelands and the animals that live in it. Industrialization also leads to the building of more houses that are detrimental to the Pinelands because the Pinelands are being destroyed little by little every day. This ecosystem is too precious to waste, it needs to be preserved. Pollution has caused over forty species of birds to become endangered. Acid rain also causes the extinction of many species. Acid rain is the term used to describe the chemicals that are deposited through the rain. These chemicals travel through the soil and affect many plants and animals. Acid rain is a world-wide problem that concerns all ecosystems; acid rain needs to controlled by limiting the amount of pollution let out into the air. Another major issue affecting the Pine Barren s is forest fires. There are as many as four hundred forest fires per year.

Important of cruise ships in my destination Essay

A cruise ship is a ship built for passengers,but mostly used for pleasure cruises.A cruise ship generally takes passengers on extended cruises with occasional calls in various places of interest.The cruise industry is the fastest-growing category in the leisure travel market; it plays an essential major role in the tourism sector. It is important for cruise ships to come to my destination/country because of the many benefits to be derived from such an endeavor.Cruise ship tourism generates revenue for my destination/country through tourists expending at (bars,restaurants,craft villages,shops,attractions,etc) per person head taxes and other fees.The foreign exchange from this benefit my destination/country gained greatly;it provides the government with well needed currency to support the country’s debt and to purchase goods and services from overseas.It increases the tax revenue of the government also.The taxes which are collected are used to improve the countries infrastructur e making my destination more seductive to future visitors.The cruise ship industry also produces employment for many workers at my destination.Persons are employed at the various ports where the ships dock.Jobs in restaurants,bars,hotels,entertainment facilities and more are also produced.They are also employed at tour companies,attractions, craft markets, and shops who sell to tourists.Security,transportation and farming jobs are also created.Accommodating cruise ships also allows for improvements to infrastructure such as port facilities; expansions to shipping ports allows for more greater ships to visit.Improvements are also done on public facilities.These improvements benefit my destination in the long run as they improve their overall standard and quality of life of the citizens living there.Cruise ship tourism also produces the possibility for  future stop over visitors.