Need for a New Health Care System Essay -- Politics Health Care Medica

Need for a New Health Care System   Ã‚  Ã‚  Ã‚  Ã‚  One of the major problems nagging America is the need for a new health care system. The number of uninsured Americans needing medical treatment is rising. Medicare, a major part of the American health care system, is projected to go broke in 2019 according to USA Today?s article, 'Congress refuses to swallow cures for ailing Medicare.' I have seen this ruin people?s pursuit of happiness. I worked in a nursing home for the past five years. Many elderly patients run out of money to support themselves for their long term care. When they go on Medicare, only certain treatments and prescription drugs are available. This causes them to worsen in condition physically and mentally. I believe that with a national health care system, similar to the one in Canada and some European nations, this destruction of life and happiness will be decreased.   Ã‚  Ã‚  Ã‚  Ã‚  The problem with Medicare is that it is not efficient and is in serious financial problems. One huge concern stated in the USA Today?s article, ?Congress refuses to swallow cures for ailing Medicare, is that the baby boomer generation is about to become eligible for Medicare, and there is currently barely enough money to cover the current population of beneficiaries. Medicare is not the only problem with the American health care system. Increasing amounts of uninsured people, increasing prescription drug costs, increasing amounts of prescription drugs per individual, and the trend toward more expensive drugs are some of the other factors troubling the current health care system (Hansen 2). We all pay for the uninsured through increased medical bills and insurance premiums (Hansen 3). Prescription drug costs are rising due to the increases in research and development costs (Hansen 3). People are requiring more medication and do not tend to shop for the best price, instead they buy what is recommended and sometimes the most expensive (Hansen 2).   Ã‚  Ã‚  Ã‚  Ã‚  We cannot just lower the cost of prescription drugs and expect a huge effect on medical costs. We still are going to be faced with the failure of Medicare and the increasing amount of uninsured Americans. With the increase in the number of uninsured Americans, the increase in the cost of health care will come. With the baby boomer generation coming to eligibility age for Medicare, it is inevitable that Medicare will run dry. Thi... ...o emotional depression. One of our three unalienable rights that our country gave us is the pursuit of happiness. With the current health care policies, many elderly are being restricted of this right. With a national health care system, the country as a whole would benefit. Our national health would improve, uninsured citizens would be eliminated, costs would fall, and Medicare would be revived. Works Cited Axworthy, Lloyd and Spiegel, Jerry. ?Retaining Canada?s health care system as a global public good.? Canadian Medical Association Journal 167.4 (2002): 1-3. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 . ?Congress refuses to swallow cures for ailing Medicare.? USA Today (2004): 1-2. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 . Hansen, Christopher W. ?Perspective on drug costs.? Vital Speeches of the Day 70.10 (2004): 1-8. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 . McCarthy, Michael. ?US doctors group calls for national health-care system.? Lancet 362.9384 (2003): 1-2. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 . Need for a New Health Care System Essay -- Politics Health Care Medica Need for a New Health Care System   Ã‚  Ã‚  Ã‚  Ã‚  One of the major problems nagging America is the need for a new health care system. The number of uninsured Americans needing medical treatment is rising. Medicare, a major part of the American health care system, is projected to go broke in 2019 according to USA Today?s article, 'Congress refuses to swallow cures for ailing Medicare.' I have seen this ruin people?s pursuit of happiness. I worked in a nursing home for the past five years. Many elderly patients run out of money to support themselves for their long term care. When they go on Medicare, only certain treatments and prescription drugs are available. This causes them to worsen in condition physically and mentally. I believe that with a national health care system, similar to the one in Canada and some European nations, this destruction of life and happiness will be decreased.   Ã‚  Ã‚  Ã‚  Ã‚  The problem with Medicare is that it is not efficient and is in serious financial problems. One huge concern stated in the USA Today?s article, ?Congress refuses to swallow cures for ailing Medicare, is that the baby boomer generation is about to become eligible for Medicare, and there is currently barely enough money to cover the current population of beneficiaries. Medicare is not the only problem with the American health care system. Increasing amounts of uninsured people, increasing prescription drug costs, increasing amounts of prescription drugs per individual, and the trend toward more expensive drugs are some of the other factors troubling the current health care system (Hansen 2). We all pay for the uninsured through increased medical bills and insurance premiums (Hansen 3). Prescription drug costs are rising due to the increases in research and development costs (Hansen 3). People are requiring more medication and do not tend to shop for the best price, instead they buy what is recommended and sometimes the most expensive (Hansen 2).   Ã‚  Ã‚  Ã‚  Ã‚  We cannot just lower the cost of prescription drugs and expect a huge effect on medical costs. We still are going to be faced with the failure of Medicare and the increasing amount of uninsured Americans. With the increase in the number of uninsured Americans, the increase in the cost of health care will come. With the baby boomer generation coming to eligibility age for Medicare, it is inevitable that Medicare will run dry. Thi... ...o emotional depression. One of our three unalienable rights that our country gave us is the pursuit of happiness. With the current health care policies, many elderly are being restricted of this right. With a national health care system, the country as a whole would benefit. Our national health would improve, uninsured citizens would be eliminated, costs would fall, and Medicare would be revived. Works Cited Axworthy, Lloyd and Spiegel, Jerry. ?Retaining Canada?s health care system as a global public good.? Canadian Medical Association Journal 167.4 (2002): 1-3. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 . ?Congress refuses to swallow cures for ailing Medicare.? USA Today (2004): 1-2. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 . Hansen, Christopher W. ?Perspective on drug costs.? Vital Speeches of the Day 70.10 (2004): 1-8. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 . McCarthy, Michael. ?US doctors group calls for national health-care system.? Lancet 362.9384 (2003): 1-2. Academic Search Elite. EBSCOhost. University of Iowa, Main Library. 18 Dec. 2004 .

Da Vinci Surgical System Essay -- Robotics Surgery

-The Da Vinci Surgical System- What is the Da Vinci Surgical System? The Da Vinci Surgical System is a large purpose-built robot controlled by a surgeon that performs minimally invasive surgical procedures on patients. The system incorporates an ergonomically designed surgeon's console, a patient-side module with four interactive robotic arms, each with interchangeable surgical instruments and a 3-dimensional endoscopic vision system. Powered by high-tech supercomputers, the surgeon's hand movements are scaled, filtered and then converted into precise movements of the surgical attachments. The designers of the system are a team of doctors, engineers and biomedical engineers at a company called Intuitive Surgical. The motivation that these designers had was to develop a surgical technique that would be minimally traumatic for patients and one that would speed up recovery time. The Industry The Da Vinci robot is part of the Biomedical Engineering industry. The industry is concerned with the application of engineering principles and techniques to the medical field. It combines expertise from medical and engineering disciplines to improve healthcare systems. The industry is very innovative and most universities now offer training in biomedical engineering. This is because it has always been a highly specialised field and required a designer to have both medical and engineering training and experience. Research and development is a very important aspect of this industry and it is very draining on a company's funds. Great emphasis is also placed on product placement and marketing. Though these products are usually marketed towards industry professionals such as doctors and hospital management. The physical location and... ...rent control systems. These results would then been amalgamated and the development process would then begin. Continual assessment of the development process is essential. If the current development strategies are unsuccessful, new research would be undertaken to identify problems and try to minimise them. R&D is essential in ensuring the success of an innovation. With a strong R&D program products are more likely to be introduced as a market-leading product, as a successful product and as a profitable product. What is Robotic Surgery? Robotic Surgery is an emerging technology that utilizes purpose-built robots to perform surgical procedures on patients. At present these robots are not autonomous, they are controlled by a surgeon at all times. Thesuarus Wiki Intuitive surgical Howstuffworks http://www.amdocs.com/successstories.asp?CustomerID=76&SID=603

What Has Suddenly Made People Across the World Willing to Pay Three to Four Times More for a Cup of Coffee Than They Used to?

Topic: Topic Question No. 3, McDonald’s (from Week 12 case study ‘China’s Big Mac Attack’ ) and its strategic appreciation using SWOT analysis and its possible future developments -Introduction- This paper analyses possible development in McDonald’s’ future based on the strategic appreciation using SWOT analysis (Strengths, Weaknesses, Opportunities and Threats). Firstly, the paper briefly explains the outline of the case study. Secondly, it identifies the organisation’s current mission, objectives and strategies. Then the argument moves onto SWOT analysis. In this part, the paper analyses the environment in which McDonald’s is given, and the opportunities and threats are identified. The organisation’s resources are also analysed and it identifies strengths and weaknesses. In next chapter of the paper, it conjectures possible future strategies formulated within the organisation. Subsequently, the implementation of strategies is discussed. Lastly, the evaluation of results carried out by the organization concludes this paper. The case study entitled ‘China’s Big Mac Attack’ written by James L. Watson focuses on how McDonald’s – a leading American fast-food franchise – could accomplish to break down a barrier of Eastern Asian dietary habits and expand its franchisee territories. According to the case study, McDonald’s ought to be considered not only as an outstanding international mega-hamburger chain but also as a representative of the cultural message transmitted through Hollywood and other American culture. The author points out that even though McDonald’s franchises outside the United States are mostly operated and managed by non-American franchisees, its distinguishing double arches of McDonald’s always represent the United States of America as Stars and Stripes does. This fact shows both pros and cons, which are explained later on in this paper. In China, a rise of new middle classes and its single-child family policy accelerate the expansion of McDonald’s chain, which is also caused by a rise in the amount of money and attention lavished on children. This enormous social and cultural change is certainly a reason why McDonald’s managed to have become so prominent in China. This globalization (Westernization or in other words Americanization) has also caused new type of localization. Just as any other multinationals such as Nokia, Sony, General Motors and Starbucks, McDonald’s is no longer American company but Chinese, German, Brazilian, Indian and Japanese company. The detail is explained afterwards. It also must be noticed that McDonald’s has changed people’s behaviour in China e. g. lining up when they order or wait for meals. McDonald’s stunning strategy is not only exclusive in its franchise but also its unique management system. Hamburger University in Oak Brook, Illinois – McDonald’s world-wide management training center – is designed exclusively to instruct personnel employed by McDonald's Corporation or employed by McDonald’s Independent Franchisees in the various aspects of the business. (www. mcdonald’s. com) The author notices the importance of McDonald’s in China as a public space where local students and elderly gather and socialize. McDonald’s proudly shows its highly guaranteed food quality management. This trust also helped McDonald’s to become a dominant fast food chain in China. An imitation of brand image and products is considered to be harmful and aging population due to single-child family policy may well require McDonald’s to change its customer target segment. What’s McDonald’s’ current mission, objectives and strategies? Every organization holds its own mission, objectives and strategies – so does McDonald’s. McDonald’s was firstly founded in Illinois, the United States, in order to provide affordable meals to everyone anywhere. As the company grows, the company has continuously developed its brand image and moved its customer target segment onto children. (http://www. mcspotlight. org/media/press/index_mcds. shtml) The child-friendly atmosphere and its family-oriented space provided by McDonald’s has amazed substantial number of customers. McDonald’s greedily sought after its market overseas. According to the case study, McDonald’s today has more than 25000 outlets in 119 countries, and most of the corporation’s revenues now come from operations outside the United states, and a new restaurant opens somewhere in the world every 17 hours. Above all, it is most likely that McDonald’s current objective is to acquire the market share and pursue further establishment and standardization of its strong brand image. As strategies, recently McDonald’s rapidly expands its market share in developing countries as depicted in the case studies in China, Russia and East Europe and moreover India. It uses the image of a lighter side of American sub culture and represents a ‘gate to the world’ for customers mainly in developing countries. As to be shown in its clean toilet policy, shops are kept clean and they create a good family-friendly atmosphere. On the top of it, its strict food safe guarantee system is one of the stunning strategies of MacDonald’s. Mac’s child-friendly strategy is a key of its expansion strategy. American-style birthday parties, Ronald Room, toys and happy meals are concrete examples of the strategy. Also ‘localization’ policy must be noticed at this stage. James Cantalupo, the president of McDonald’s Corporation, remarks that his strategy is to become as much a part of local culture as possible and protests when people call McDonald’s a multinational or transnational. I like to call us multilocal,† he told The Christian Science Monitor in 1991. The another eminent strategy introduced by McDonald’s is ‘self-service’. Customers line up, self-seat and clean up by themselves. It facilitates customer rotation within shops and enables cost-saving shop keepings. SWOT analysis consists of an organisation’s strengths and weaknesses, and its e nvironmental opportunities and threats. SWOT analysis is useful to identify a strategic niche that the organization might exploit. [pic] Identifying the organization’s opportunities Firstly, the environment in which McDonald’s is given varies from place to place. Analysing the environment is a critical component of the strategy process since successful companies have a strategy that aligns well with the environment. Wherever people dwell in the world, there is always a demand for fast food restaurant. McDonald’s main consumer target, middle-classed family, is everywhere in any countries. Thinking of other competitors within the same market such as Hungry Jacks (Burger King), Jack in the Box and KFC, McDonald’s focuses more on the children as a target rather than the other age groups. This can differentiate McDonald’s from other fast food chains. The external environment seems to be best-suited to MacDonald’s. (see ‘opportunities in the environment’ in the above figure. ) Secondly, resources that McDonald’s acquires are well-known brand name, distinguishingly unique, safe and nutritious food, an abundant workforce supply due to its relatively easy manual work, and its strong franchising management system. As stated above, McDonald’s has achieved to build its powerful brand name over years and its trust, reputation and core customers are considered as precious assets of the company. The fact that anyone can open a new McDonald’s anywhere using its strong brand name facilitates its fast growth. Its original franchise management theory is also one of the resources McDonald’s owns. (see ‘organisation’s resources/abilities in the above figure. ) According to the environment and resources noticed above, the organisation’s opportunities are determined. (see ‘Organisation’s opportunities in the above figure. ) Positive American image is one of the positive external environmental factors. So is wide recognition of its brand image. But more importantly, an ease of access reasonable part-time workforce specializing manual work, the fact that it only needs limited ingredients available everywhere such as potato, chicken, etc should be remarked. Especially, in a developing country such as China, the radical social change can be an opportunity for McDonald’s. As noticed above, single-child policy and a rise of middle classes and a collapse of outdated Confucian family system resulted from rapid expansion of McDonald’s in China. On the contrary to this, there are some threats – negative external environmental factors. Being a representative of American cultural imperialism can be harmful when a strong Anti-Americanism outbreaks outside the U. S.. MacDonald’s in Mexico City, Rome, Macao, Rio de Janeiro, Prague, London, Jakarta and Beijing have been attacked and boycotted by protestors. Another environmental threat is its food safety. Mad Cow disease and Foot and Mouth disease caused a slaughter of thousands of livestock in Europe. The market has been immensely damaged including a supply chain of Mac’s ingredients. There is a big concern for franchisees of McDonald’s in China i. e. rapid aging population caused by single-child family policy. This rapid environmental change may well eventually force MacDonald’s to switchover its targeted customers to elderly people. The plagiarism of McDonald’s idea and strategies done by the competitors is also considered as a critical threat. Some fast food chains can be mighty rivals for McDonald’s if they tried to be more localized and lower the price. Strengths (activities the firm does well or resources it controls) of McDonald’s are its promotion strategy mainly focusing on children, being capable to provide the same menus, tastes and design of shops all over the world, and its strict quality control not only over food quality but also over quality of shops. A huge customer capacity and its fast rotation generate a massive amount of sales in a short time. Talking about weaknesses of McDonald’s, it is firstly pointed out that a typical image of McDonald’s is ‘junk food’. It means that the food obtained at McDonald’s is unhealthy, bad for diet, tasteless and low quality. As many can easily realize that McDonald’s cannot compete with luxurious cuisine restaurants in terms of its variety, taste, quality, nutrition and luxurious image. Those who care for health and weight may try to avoid McDonald’s due to its ‘junk food’ preconception. SWOT analysis and grand strategies Valuable strengths Critical weaknesses Abundant environmentalcritical environmental opportunities threats Now, based on the above-stated SWOT analysis, possible developments in the organisation’s future are outlined. According to the SWOT analysis, and other investigation into Mac’s activities, McDonald’s is currently implementing ‘Corporate Growth Strategies’ which is placed in the left above of the figure above. It is acquiring valuable strengths and abundant environmental opportunities. Since McDonald’s’ market share is rapidly growing, McDonald’s may well be taking corporate growth strategies until it reaches a maturity stage or moves onto a decline stage. McDonald’s is still one of the fastest growing companies and considered to be on a growth stage. The corporate strategies implemented by McDonald’s are still active and it will most likely hold current strategies in the future. By implementation of its strategies, McDonald’s will seek markets mainly in developing countries as its markets in developed countries are mostly saturated. Next possible destinations may include South-East Asia, Sub-continental region, South America and East Europe including Russia. It might firstly emphasis its American image initially then it will be eventually localized and integrated into each of the societies naturally as it is perfectly exemplified in China. -Conclusion- Consequently, the possible results, which McDonald’s will show are evaluated. This Mac type globalization is not exclusive to fast food chain. It is also observed in other industries, for example, computer and communication industries. McDonald’s is no longer small company, which is always influenced by the environment it is given but conversely, it can change and influence the environment itself. McDonald’s will continue to expand itself until people start becoming satiated with its tastes and image or a strong rival against McDonald’s emerges. But McDonald’s will probably change the strategies or its targeted customers in order to survive. Even if McDonald’s starts declining, the strategies used by McDonald’s will never be forgotten since they are one of the most prominent and effective management strategies ever to have been established. BIBLIOGRAPHY BOOK Robbins, S. , Bergman, R. , Stagg, I. , Coulter, M. , 2000. MANAGEMENT 2ND EDITION. NSW: Pearson Education Australia Pty Ltd. JORNAL Watson, J, W. , May-June 2000. ‘China’s Big Mack Attack’ Foreign Affairs. Pp. 120-134. WEB SITES http://www. mcdonalds. com/ http://www. media. mcdonalds. com/secured/index. html http://www. mcspotlight. org/media/press/index_mcds. shtml ———————– Corporate growth strategies McDonald’s Corporate stability strategies Corporate stability strategies Corporate retrenchment strategies Firm Status Environmental Status

Career Satisfaction

Human beings possess the unique psychological ability to self-reflect. Few human experiences and behaviors define the self and allow us to characterize ourselves within the social world more than work and career. Career choice affects socioeconomic status, friends, political values, residence location, childcare, Job stress, and many other aspects of life. And while income is important in both career selection and career longevity, so are achievement, recognition, satisfaction, security, and challenge. A person has a choice in calling work a Job or a career.This decision usually accounts for factors such as time and interest the person puts into the work. In most cases, the work will be considered a Job when the person has Just begun working, or the person has no interest in the work and only works for the pay. Generally, the term career will be used when a person expresses interest and seeks out a specific type of work, or has spent a considerable amount of time working in that area . A Job may be Just something a person does to pay bills, where as a career is something a person chooses, prepares for, and incorporates into life and self- concept.I work as a mechanical engineer in the United States Navy. I showed interest in this line of work, sought it out, and have been working in the same area for thirteen years. By definition, my work is a career; therefore, I have been calling It as such. I plan to continue working in my career choice, advancing within the Navy's ranks and ultimately retiring. After the Navy, I Intend to start another career In the civilian sector. I haven't chosen whether I will continue In the engineering field or pursue something completely different.A lot can change In the years to come before tiring from the Navy, so I am keeping my options open by bettering my r ©sum © every chance I get. I chose this career for three reasons: service, stability, and structure. When I Joined the Navy, I wanted to serve my country. I felt honor In being a part of something bigger than myself. Serving In the military Is satisfying enough for me; however, I have a wife and kids. My choice to continue to serve In the Navy Is based on how my career affects my family. I place high Importance on stability and structure.The Navy can be a very stable career If a person possesses the right abilities and wants It to be. From the beginning of my enlistment, I wanted to make a career In the Navy and have worked to the best of my ablest. Because of this, I believe my career Is very stable and I have since served thirteen years. The structure within the Navy Is well defined. Promotion guldens are made available and clear, so I know exactly what I should do In order to get advanced. Being a part of something for the greater good, having stability, and structure provide for an overall career satisfaction.Work Is obviously a necessity In order to support a family. If I have to work, I may as well enjoy what I do. I have luckily been able to c ontinue a career In the area I take pleasure and excel In. My personality traits fit the work that I do, and I have Identified the traits I would Like to Improve on In order to continually develop my career. I am satisfied with what I have chosen. I am looking forward to the changes that will soon come as I progress In work and life. Career Satisfaction By red rocketed concept. I work as a mechanical engineer in the United States Navy.I showed thirteen years. By definition, my work is a career; therefore, I have been calling it as such. I plan to continue working in my career choice, advancing within the Navy's ranks and ultimately retiring. After the Navy, I intend to start another career in the civilian sector. I haven't chosen whether I will continue in the engineering field or pursue something completely different. A lot can change in the years to come before retiring from the Navy, so I am keeping my options open by bettering my r ©sum © structure. When I Joined the Navy, I wanted to serve my country.I felt honor in being part of something bigger than myself. Serving in the military is satisfying enough for me; however, I have a wife and kids. My choice to continue to serve in the Navy is based on how my career affects my family. I place high importance on stability and structure. The Navy can be a very stable career if a person possesses the right abilities and wants it to be. From the beginning of my enlistment, I wanted to make a career in the Navy and have worked to the best of my abilities. Because of this, I believe my career is very stable and I have since served thirteen years.The structure within the Navy is well defined. Promotion guidelines are made available and clear, so I know exactly what I should do in order to get advanced. Being a part of something for the greater good, having stability, and structure provide for an overall career satisfaction. Work is obviously a necessity in order to support a family. If I career in the area I take pleasure and excel in. My personality traits fit the work that I do, and I have identified the traits I would like to improve on in order to continually the changes that will soon come as I progress in work and life.

Course Project Rough Draft Essay

I have learned a lot in achieving goals, time preferences, and pathways of learning; analyze statements, types of thinking, reading and information literacy, bring something new to taking notes, explores types of memory, diversity, communication and stress management, managing money and reflections so I can be successful in my education. In this class I have been giving good tips on every aspect on criminal justice. It also makes me know that it is to learn all the important information in the class so I can success in my education. I am a Verbal-Linguistic and more of a reader/writer then visual person. I have learned all the ends and out of criminal justice. This class has benefited me in every aspect in my life. I am not only motivated to make a difference in the communities, but also motivated to join the ranks of a new family. I chose this path because I have always enjoyed the idea of solving situations. I can honestly say I can’t imagine myself doing anything else because I am extremely fascinated by the role and intensity of these fields. Just watching what it takes to do their job is remarkable. That’s why I love this class so much because it’s a learning process for me and my life. It makes my family so proud of me that I’m taking criminal justice and going forward with my education. So all I have to do is stay with it so I can success in this degree.

Flow Past Aerofoil

ME2135E Lab Report Flow Past an Aerofoil by LIN SHAODUN Lab Group Date A0066078X 2B 10th Feb 2011 TABLE OF CONTENTS EXPERIMENTAL DATA – TABLE 1, 2, 3 2 GRAPH – ? 4 GRAPH – ? 5 GRAPH – 6 SAMPLE CALCULATION 7 DISCUSSION 8 1 EXPERIMENTAL DATA Table 1: Coordinate of Pressure Tapping Tapping No. 1 2 3 4 5 6 7 8 9 10 11 Note: Table 2: Pressure Readings Manometer inclination: Pressure Readings Pitot Pressure Static Pressure Atmospheric Pressure Atmospheric Temperature Stall angle: At the end of the experiment 474 mm 497 mm 500 mm 29 °C (mm) 0. 0 2. 5 5. 0 10 20 30 40 50 60 70 80 (mm) 0. 000 3. 268 4. 443 5. 853 7. 172 7. 502 7. 254 6. 617 5. 04 4. 580 3. 279 0 0. 025 0. 049 0. 098 0. 197 0. 295 0. 394 0. 492 0. 591 0. 689 0. 787 0 0. 032 0. 044 0. 058 0. 071 0. 074 0. 071 0. 065 0. 056 0. 045 0. 032 At the beginning of the experiment 474 mm 497 mm 500 mm 29 °C 2 Manometer Readings at various Tapping 1 2 3 4 5 6 7 8 9 10 11 478 489 494 501 505 506 506 505 502 501 500 496 478 484 492 498 500 502 502 500 499 499 495 475 478 486 494 497 499 500 498 498 498 493 476 475 480 488 493 495 498 496 496 498 486 540 532 528 522 518 516 514 507 503 502 509 562 550 546 526 522 518 514 508 504 502 495 523 520 520 518 517 516 516 515 515 515 498 516 514 515 516 515 514 514 512 513 514Table 3: Pressure Coefficients ( ) Free Stream Velocity v v v ( ) Reynolds Number 3 Coefficients at various Tapping 1 2 3 4 5 6 7 8 9 10 11 -0. 956 -0. 478 -0. 261 0. 043 0. 217 0. 261 0. 261 0. 217 0. 087 0. 043 0. 000 -0. 174 -0. 956 -0. 696 -0. 348 -0. 087 0. 000 0. 087 0. 087 0. 000 -0. 043 -0. 043 0. 783 -1. 087 -0. 956 -0. 609 -0. 261 -0. 130 -0. 043 0. 000 -0. 087 -0. 087 -0. 087 2. 174 -1. 043 -1. 087 -0. 869 -0. 522 -0. 304 -0. 217 -0. 087 -0. 174 -0. 174 -0. 087 -0. 609 1. 739 1. 391 1. 217 0. 956 0. 783 0. 696 0. 609 0. 304 0. 130 0. 087 0. 391 2. 695 2. 74 2. 000 1. 130 0. 956 0. 783 0. 609 0. 348 0. 174 0. 087 -0. 217 1. 000 0. 869 0. 869 0. 783 0. 739 0. 696 0 . 696 0. 652 0. 652 0. 652 -0. 087 0. 696 0. 609 0. 652 0. 696 0. 652 0. 609 0. 609 0. 522 0. 565 0. 609 GRAPH ? 3. 0 2. 5 2. 0 1. 5 CPL , CPU against X/C @ 4 ° Cpl 3. 0 2. 5 CPL , CPU against X/C @ 8 ° Cpl Cpu 2. 0 1. 5 Cpu CPL ,CPU CPL ,CPU 1. 0 0. 5 0. 0 -0. 5 -1. 0 -1. 5 0. 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 0. 9 1. 0 1. 0 0. 5 0. 0 -0. 5 X/C -1. 0 -1. 5 0. 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 X/C 0. 9 1. 0 Area = 0. 437 Area = 0. 813 4 3. 2. 5 2. 0 1. 5 CPL , CPU against X/C @ 12 ° 3. 0 2. 5 CPL , CPU against X/C @ 16 ° Cpl Cpu 2. 0 1. 5 Cpl Cpu CPL ,CPU CPL ,CPU X/C 0. 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 0. 9 1. 0 1. 0 0. 5 0. 0 -0. 5 -1. 0 -1. 5 1. 0 0. 5 0. 0 -0. 5 -1. 0 -1. 5 0. 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 X/C 0. 9 1. 0 Area = 0. 858 GRAPH ? Area = 0. 729 3. 0 2. 5 2. 0 1. 5 CPF , CPR against Y/C @ 4 ° Cpf Cpr 3. 0 2. 5 2. 0 1. 5 CPF , CPR against Y/C @ 8 ° Cpf Cpr CPF ,CPR 1. 0 0. 5 0. 0 -0. 5 -1. 0 CPU ,CPR Y/C 1. 0 0. 5 0. 0 -0 . 5 -1. 0 Y/C -1. 5 -0. 10 -0. 08 -0. 06 -0. 4 -0. 02 0. 00 0. 02 0. 04 0. 06 0. 08 0. 10 -1. 5 -0. 10 -0. 08 -0. 06 -0. 04 -0. 02 0. 00 0. 02 0. 04 0. 06 0. 08 0. 10 Area = 0. 032 Area = 0. 079 5 3. 0 2. 5 2. 0 CPF , CPR against Y/C @ 12 ° Cpf Cpr 3. 0 2. 5 2. 0 1. 5 CPF , CPR against Y/C @ 16 ° Cpf Cpr 1. 5 CPL ,CPU CPL ,CPU Y/C 1. 0 0. 5 0. 0 1. 0 0. 5 0. 0 -0. 5 -1. 0 -0. 5 -1. 0 Y/C -1. 5 -0. 10 -0. 08 -0. 06 -0. 04 -0. 02 0. 00 0. 02 0. 04 0. 06 0. 08 0. 10 -1. 5 -0. 10 -0. 08 -0. 06 -0. 04 -0. 02 0. 00 0. 02 0. 04 0. 06 0. 08 0. 10 Area = -0. 038 GRAPH Area = -0. 053 0. 437 0. 813 0. 858 0. 729 0. 32 0. 079 -0. 038 -0. 053 0. 434 0. 794 0. 847 0. 715 0. 062 0. 191 0. 141 0. 150 0. 439 0. 877 1. 316 1. 755 1. 8 1. 6 1. 4 1. 2 Cl Cd CL , CD against ? CL,CD, 2 1. 0 0. 8 0. 6 0. 4 0. 2 0. 0 2*Pi*a -0. 2 0. 0 2. 0 4. 0 6. 0 8. 0 ? 10. 0 12. 0 14. 0 16. 0 6 SAMPLE CALCULATION The sample calculation is based on Tapping 2 & Table 1: Coordinate of Pressure Tapping Table 3: Pressur e Coefficients 1. Air Density at 29 °C ( ) ( ) 2. Free Stream Velocity v v v ( ) 3. Reynolds Number 4. Pressure Coefficient ( ) ( ) ( ) ( ) 5. Lift and Drag Coefficient 7 DISCUSSION 1.Plot CL and CD against Please refer to Page 6. on the same graph. 2. Compare the experimentally measured CL with the Thin Aerofoil Theory prediction of . Discuss the similarity and discrepancy observed. The graph shows at small attack angle (4 ° and 8 °), the measured Lift coefficient is quite close to theoretical predicted value , this is because at small attack angle, air stream flows along the aerofoil surface smoothly without flow separation, which fulfills the basic assumption of Thin Aerofoil Theory, hence the experimental result matches with theoretical value well.When further increase attack angle, the streamline become highly curved, until at certain angle the streamline is no longer attached to the aerofoil surface and flow separation is occurred, massive turbulence wake appears on aero foil upper surface, which greatly reduce the lift. At this moment aerofoil is actually â€Å"blocking† the air flow, hence the Lift coefficient is significantly reduced after reach Stall angle, and can no long follow the theoretical predicted value . 3.What would you expect the lift and drag force to be when At , since the 0015 aerofoil is symmetrical, the pressure on upper and lower surface of aerofoil is the same, hence it will not produce any lift force. The of 0015 aerofoil is 0. 0147 at (when Re=80000), so there is small drag force even at 8 4. Does the why. which you have obtained gives the total drag on the aerofoil? Explain Total Drag of aerofoil is contributed by Parasite Drag and Induced Drag, the Parasite Drag is related to , while Induce drag is a byproduct of lift.Induce drag is a drag force occurs when aerofoil redirects the airflow coming at it. Refer to below diagram, the lift force is normal to chord of aerofoil, when decompose the lift force to horizontal an d vertical component, the horizontal component , which is in the same direction of drag. 5. Explain from the pressure distribution why there is a lift force. Using as example, the pressure distribution diagram shows the lower surface of aerofoil has lesser pressure drop ? igher pressure, while upper surface of aerofoil has much higher pressure drop, result in lower pressure. The integration of pressure drop along the aerofoil is the area under the curve, which represents force in a unit length of aerofoil, compare the area enclosed for upper and lower surface, we can see the there is a resultant lift force produced. 3. 0 2. 5 2. 0 1. 5 CPL , CPU against X/C @ 8 ° Cpl Cpu CPL ,CPU 1. 0 0. 5 0. 0 -0. 5 -1. 0 -1. 5 0. 0 0. 1 0. 2 0. 3 0. 0. 5 0. 6 0. 7 0. 8 0. 9 1. 0 X/C 9 6. Comment on the pressure distribution on the aerofoil when stall is reached. Using as example, when stall angle is reached, the pressure drop of upper surface become insignificant due to massive turbulent wake, h ence the lift force is greatly reduce and stall happens. 3. 0 2. 5 2. 0 1. 5 CPL , CPU against X/C @ 16 ° Cpl Cpu CPL ,CPU 1. 0 0. 5 0. 0 -0. 5 -1. 0 -1. 5 0. 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 X/C 0. 9 1. 0 10

Ecological Services Essay Example | Topics and Well Written Essays - 500 words

Ecological Services - Essay Example Ecological services help to maintain these necessary requirements. Decreasing evaporation, maintaining proper water quality, using natural resources for clean energy is all very important in ecological services. Each services carries out a specific role that contributes to one another in some way. Two services that are most important from â€Å"The Ecological Service of Rivers†, includes providing water for drinking and the providing of irrigation water. Each one of these services contributes to eating and drinking which are important for human survival. Without clean water to drink and water to replenish growing seeds, human life could not remain stable. A river is an important provider of drinking water. Providing drinking water is one of the most important ecological services that rivers can provide. Providing clean drinking water allows for human and animal replenishment that is free of toxins. Toxins that can be found in water include pesticides, diseases, parasites and carcinogens. Another reason why drinking water is so important is because of the cleaning it can provide which leads to a safe environment. Clean water can help prep an area for surgery and allow for proper and safe preparation of food. Clean drinking water also continues to help maintain clean drinking water. When clean water is used and then recycled it is easier for water to keep its cleanliness. Irrigation is important for proper vegetation. A rivers ability to provide the ecological service of irrigation helps maintain life. Irrigation can help seeds grow even when an area may be in a drought. Being able to sustain enough water to irrigate crops will provide much vegetation. Irrigation also makes for proper land up keep. Many use irrigation to water plants that don’t produce food. Irrigation can help trees grow which provide oxygen and flowers that provide pollen. Each element of life is important as each life feeds