Wednesday, October 30, 2019

Design of Motor Speed Sampling, Amplification, Filtering and Display Essay

Design of Motor Speed Sampling, Amplification, Filtering and Display - Essay Example On the other hand, the display circuit performs digital functions by showing the alpha numeric digits. The distinctive design of the electronic circuits for the control of motor speed control and the subsequent display is the physical approach used in the creation of physical circuits that also check the variations in behavior of various electronic components with close reference to their working. Therefore, the required system is an effective remote controlled DC motor with a speed display on seven segments with the D type flip flop. This type of circuit can be categorically divided into two parts; the PWM generator and the IR transmitter. Additionally, there are a number of ways that the remote control can be used. However, we shall deploy the use common approach of the NE555 with the combination of various components in both modules as illustrated below: Particularly, 555 is widely used for the frequency oscillation and can be obtained through the different frequency range according to the need by changing its subsequent duty cycle. The first part of the circuit is generated by the PWM and this is the input of the second model. Conversely, the second model is responsible for the transmitting of wireless signals at a 38 kHz range. Noteworthy, duty cycles can be changed by the trimming of RV2 variable resistance while the D3 is the IR diodes transmit signals (Krishnan, 2010, p.7). On the other hand, the second circuit represents the response from the first circuit and it receives signals using the IR sensor. These signals are later converted to signals that result in the subsequent motion of the motor. Generally, this represents the remote control switch which is tasked with the conversion of low frequencies into significantly lower voltages between 2v to 5v. This concept is illustrated below: Functionally, Q2 is an IR sensor that receives the transmitter signals and switches the 2N2222A transistor. Therefore, the voltage

Monday, October 28, 2019

Travel Egency Essay Example for Free

Travel Egency Essay The purpose of this report is to determine the current business environment of the travel agency industry in New Zealand and some key factors of being success in the business. Booking the fare through travel agency can be convenient and time-saving, but there are many alternative ways out there in the market as well, such as book directly from the Airline Company, online booking website, etc. Findings indicate invest in the travel agency can be profitable but there are a few aspects to analyse before entering the market. Key factors the investor should be considered are: customer loyalty probability, sustainable development and market segmentation. Introduction There is a growing number of people book the fare or a trip through either travel agency or online website in New Zealand. Toda, Makino, Kobayashi Morimoto (2007) indicated that going on a leisure trip is good for people’s mental health, and this can also be a key driver to the increase. Furthermore, there are some positive effects relates to the travelling as well: meeting new people, gaining more exciting experiences, etc. So, not only existing travellers, but also everyone can be classified as a potential customer to the investor. An analysis of both external business environment and internal business structure will be undertaken. There should be a vivid picture presented in the investor’s mind, about travel agency industry’s future, through this report. Discussion Customer Loyalty and Profitability  Travel agencies do its business by providing service to the customers and gain commissions from it. Keeping loyalty customers is the priority to the customer oriented company as they directly and continually contribute to the business (Van Riel, Semeijn Pauwel, 2004). The profit margin generated by the travel agency is very low, and the industry is heavy reliance on the loyalty customers (Oppermann, 1997). So, travel agency should strive as much as possible to develop long-term relationship with its customers (Poujol Tanner, 2010). Losing customers can be really costly in today’s highly competitive market. According to Bovee and Thill (2010), the cost of attracting a new customer is far more than the cost of keeping the existing customer. In order to establish advantageous positions within the industry, the agency must has high quality relationship with its customers by fully satisfying the customers’ needs and wants; because the quality of customer relationship is directly proportional to agency’s profitability (Aborumman, Alhawary Irtaimeh 2011). Consumers are keen to pay for the trip at the lowest price by using the most efficient way, which is booking through the travel agency, for an example, the average difference between the ticket the customers found and the ticket the House of Travel found is 150NZD (â€Å"Agents†, 2004). However, â€Å"Is your travel agency playing ‘fare’? † (2001) appeals that only 51% of the agents can provide complete fare and flight information to the customers, and only 20% of them actually acknowledge their customers about the overrides received. This can be truly risky to the travel agency, as all the agencies are providing similar product, so the quality of service would be considered as a key factor (Van Riel et al. , 2004). Richard and Zhang (2012) also indicate that the customers can be less price-sensitive once they become loyal to a brand, and less likely switch to another brand simply because of price. Sustainable Development Having a sustainable development strategy is essential to a business to be successful in the competitive market. From the research, about 80% of the travel agency in New Zealand was or currently is operate under the franchise business model (Oppermann, 1997). In this way, the franchisor will provide the online management and online booking system for the franchisee to use, which can be a major benefit to the investor. In addition, the sustainable development strategy is also important from the business structure’s point of view. Oppermann (1997) indicates that 22 per cent of the travel agency had only one or two fully time employees, 58 per cent had 2. to 5 and only 6 per cent of the agency had more than 10 full time employees. By adopting this team-based strategy, the business can gets more customer satisfaction and be more efficient and profitable (Dunford and Palmer, 2002). The Flight Centre is a typical example for this: the Flight Centre split all the employees and retail stores into three management level, the primary level is called ‘family’, which contains three to seven employees, usually is on the retail store basis. The medium level called ‘village’, which contains our to five families that are geographically near each other, and create a close working relationship. The top level called ‘country’, which contains about 20 stores. The country leader has the right to directly report to the head office (Dunford et al. , 2002). Under this development strategy, the revenue and performance of the family, village and country directly linked to the agent’s salary, the individual has to work hard to increase customers’ satisfaction and the revenue of the family, so that he or she can get better paid. In this way, the investor can directly benefit from the increase of sales and also minimize the risk from the management level. Marketing New Zealand travel agency industry is facing a very board market, as everyone can be a potential customer. All the agencies are trying to provide unbeatable price for its customers. From the agencies’ view, some businesses have concentrated on a few specific market segments (Bovee et al. , 2010). For instance, Flight Centre New Zealand, as an Australian-based international travel agency, now owns 130 stores around New Zealand, and over 1500 stores all over the world. The company provides several different travel packages and more relevant information for the heavy-user segment rather than the light users (Dunford et al. , 2002), as the heavy users are more focus on the quality of the trip instead of price (Goldsmith Litvin, 2012); Studentflight, as a part of Flight Centre New Zealand is targeting on the young age student customer by provides special offer to the students. On the other hand, some agencies are only focus on one market segment. For an example, CTS New Zealand, which is a Chinese-based travel agency, provides the flight booking service only from or to New Zealand, not all over the world, on an extremely low price compare to others. Some other companies, such as the STA Travel Service, their product mix (not only provides assistance on booking tickets and accommodations, but also visa application, travel insurance, etc. ) also helps the company to gain more market share in the industry. Industry Structure Analysis Understand the industry structure is crucial to the investor. Travel agency industry can be defined as a highly competitive industry. First of all, there is a high threat from the substitutes and competitors. Direct distribution shows a growing proportion in the current market segment, for an example, many airline companies, such as Air New Zealand, start to distribute the ticket direct to the customers in order to cut out the commission payment to the travel agency (Oppermann, 1997). The travel agency industry is forced to innovate the way they do business due to this fact (Rhodes, 1999). However, the threats are not only come from the airline companies, but also other travel agencies. For instance, the House of Travel, Flight Centre and some other travel agencies both developed the online booking engine, so that the consumers can book the ticket, accommodation and enjoy other services online. In addition, the internet-based and home-based business model can be a major threat to the traditional type of agency, especially the internet- based agency which provides 24 hours 7 days in a row service and global accessibility for the customers (Thom Chen, 2012). Nowadays, 35% of bookings are completed online (â€Å"Bums on seats†, 2005). The supporting services provided by the online agency, such as currency calculator, weather forecast, can also be a competitive disadvantage to traditional agency (Van Riel et al. , 2004). From the internet and home-based travel agency point of view, the barriers to entry is low, due to there is almost no fixed cost involved, all you need to start a business is a computer with a booking system, a phone, and a customer list. Secondly, the supplier power is keep increasing over years, as the upper level supplier has the power to decide the commission rate that they pay to the agency. The suppliers also interested in distribute the ticket to the client by themselves rather than through the travel agency. The bargaining power of the travel agency is low. Thus, the buyer’s power is high in the industry. There are all kinds of travelling information on the internet, compare to the past, the consumers are not fully reliance on the travel agents to schedule their trip anymore. According to Dunford et al. (2002), 80% of the travel revenue was generated by 25% of the customer, and these 25% of people is relatively price-sensitive, which means the agency has to provide better service to keep those customers (Van Riel et al. , 2004). The consumers have certain degree of bargaining power. In summary, the travel agency industry is highly threatened by the competitors and the substitutes, the barriers to entry can be low, and there is almost none of switching cost, the supplier’s power and buyer’s power is high. Overall peaking, the travel agency industry may not be an attractive industry. Conclusions An analysis of the travel agency business in New Zealand has been presented in this report; few conclusions can be drawn from this. Investing in the travel agency industry and operating under the franchise business model carries a lower risk compare to operate individually. In order to being profitable in the industry, the investor should focus on developing long-term relationship with its customers by providing customize service and product for them. The investor also needs to concentrate on developing the appropriate sustainable strategy for the business. As travel agency industry is a highly competitive industry, careful determine the market segment and trying to differentiate their service and product seems necessary. The investor can be successful in the market, but there are numbers of factors need to be examining before truly entering into the market.

Saturday, October 26, 2019

Four Critics’ Perspective of Theodore Roethkes Elegy for Jane Essay

Four Critics’ Perspective of Theodore Roethke's Elegy for Jane More than forty years after her untimely death, Jane Bannick breathes again--or so it seems while reading about her. Jane's unfortunate death in an equestrian accident prompted one of her professors, the poet Theodore Roethke, to write a moving poem, "Elegy for Jane," recalling his young student and his feelings of grief at her loss. Opinions appeared almost as soon as Roethke's tribute to Jane, and passages about the poem continue to appear in articles and books. Recent writings by Parini, Ross-Bryant, Kalaidjian, and Stiffler disclose current assessments. According to Parini, Jane's death is not the subject of the poem; rather, her death presents an occasion for calling up a certain emotional state in which Roethke's feelings of grief and pity transcend the occasion. Following the standard of elegiac celebration of the vegetation god Adonis reaching back to Bion's Lament for Adonis and Moschus's Lament for Bion, Roethke associates the deceased with elemental aspects of nature--the plant tendrils, the pickerel, the wren--to defuse the pathos of her death. A Romantic poet, Roethke views death as a stage; the plants point to rebirth (138-39). The subject of Roethke's most famous poem (45) becomes the response to Jane's death and his ambivalent emotions at her graveside. Without the associations of earlier elegies, the emotion would surpass the occasion. Roethke mourns not only Jane, whom he knew only slightly, but also the deaths of us all (138-39). Jane presents one aspect of woman in The Waking collection (1953): Ross-Bryant views Jane as a young girl who is dead. The poem expresses concern with the coming of death. This poignant elegy is presen... ...ini and Ross-Bryant appear almost polarized in their opinion of the nature of Roethke's feelings for Jane: Parini contends that Roethke mourns for us all; Ross-Bryant feels that Roethke's grief is intensely personal. Other than the nature of than Roethke's feelings for Jane, these four critics find little to disagree about in "Elegy for Jane." Works Cited Kalaidjian, Walter B. Understanding Theodore Roethke. Columbia: U of South Carolina P, 1987. Parini, Jay. Theodore Roethke: An American Romantic. Amherst: U of Massachusetts P, 1979. Roethke, Theodore. The Collected Poems of Theodore Roethke. New York: Anchor-Doubleday, 1975. Ross-Bryant, Lynn. Theodore Roethke: Poetry of the Earth . . . Poet of the Spirit. Port Washington, N.Y.: Kennikat, 1981. Stiffler, Randall. Theodore Roethke: The Poet and His Critics. Chicago: ALA, 1986.

Thursday, October 24, 2019

Merits and demerits of tylers model and skilbeck model

Curriculum development has been looked at In two ways. These are apocryphalness' and ‘product'. As the terms Imply ‘process' Is concerned with the methods means ‘how whereas the ‘product' looks at the outcomes, the end product&dhat'. There are two approaches that have been developed: normative nondestructive. The first approaches are called normative – Objectives (Tyler 1949) and the rational(Tab 1962 and Wheeler 1967) because they provide a sequence of steps. Teaches technical interests of control.The procedural approach (Statehouse 1975,Walker 1972, Skillets 1976, Olivia 1976) which is discussed later in the lecture falsetto the second category of descriptive approaches because it an interactive model. Differentiation between Process and Model:Process: Some synonyms include. Procedure, development, method, progression, practice,course of action. A process is very simply the steps from the beginning of something Its end. We have said that Curriculum De velopment is a process because It has beginning and It Is continuously changing or being developed. Model:Some synonyms: representation or reproduction. Len education when we talk about models we are talking about a diagrammaticrepresentation of something. (See Figure 5. 2 A simple Model of CurriculumDevelopment – course book). Len the curriculum development process, the term model is used to represent the different elements or stages and how they relate to one another. Models are usually abstract pr conceptual. This means that they exist In policemen's. They are very useful in the task of theory building. (Sahara: 2003: 5. 6) A continuum of Curriculum Development Models.

Wednesday, October 23, 2019

Turner (1997) continuously emphasizes the connection

American nation was developing in unique conditions, peculiar in both cultural and geographical sense: ‘The existence of an area of free land, its continuous recession, and the advance of American settlement westward, explain American development’ (Turner).European nations were developing within a limited territory; expansion of a nation occurred through conquering other peoples and subjecting them to the nation’s rule. On the contrary, American institutions and society were themselves evolving to meet constantly changing conditions: the ‘expansion westward with its new opportunities, its continuous touch with the simplicity of primitive society, furnish the forces dominating American character’ (Turner).American institutions were therefore facing the pressure to expand in order to meet demands of people migrating westwards (Lind). This phenomenon continued and intensified as long as Americans were finding new homes in the west.Frontier is characteriz ed as the line of fast and enduring Americanization. The philosophy of early American development implies changing ‘primitive economic and political conditions of the frontier into the complexity of city life’ (Turner).However, Slotkin (97) notes that the frontier provided Americans with opportunity to illustrate their fast adaptability to changing lifestyle and environment. This is illustrated by the willingness to face the challenges that were being faced in the new lands out west, where human settlement had never been in such huge scale.Therefore, the central conflict of the frontier era is between nature and culture, between savagery and civilization. This conflict is also central to the classical frontier romance ‘Last of the Mohicans’ by James Fenimore Cooper. This paper will separately explore the dynamic of ‘Americanization’ of male and female characters.Male characters will be analyzed along the continuum from the character stuck in th e European values and way of seeing the world (Gamut) through a character that is ready to accept and to learn from the frontier experience (Major Heyward) to the character that feels comfortable with the hybrid identity (Hawkeye). As concerns female character, Cora and Alice will be analyzed as an opposition of a new mixed American identity and classic European whiteness.

Tuesday, October 22, 2019

Benefits of Community Service For You

Benefits of Community Service For You SAT / ACT Prep Online Guides and Tips Whether you’re a freshman or a senior, high school is a great time to try things that you haven’t done before – including volunteering. Students may think it’s not worth their time to get involved in the community because it doesn’t pay like a normal job would. However, there are several benefits that volunteering can give you that no other job can. Read on to find out about all the benefits of community service for you, your personal fulfillment, and practical purposes like college applications! What Is Community Service? Community service is when you work for free to help benefit the public or your community. Usually, students who choose to do community service do so as volunteers, meaning that they choose to help out because they want to do so. Community service can have a lot of positive effects on students, such as helping them to develop skills, making contacts, and allowing them to improve the quality of life of others. You probably know some students in your school who choose to volunteer their free time through community service. There are many ways that you can do this, such as joining a non-profit organization, working with a church group, or you can choose a cause and create your own service project. For some ideas of community service activities, see our list of volunteer ideas. Volunteer work can range from the relatively simple, like helping coach the lacrosse team at your old junior high, to the much more complex, like starting a non-profit that helps settle new refugees in your area. As I’m sure you can imagine, there are a lot of benefits to doing volunteer work. They include†¦ School Benefits You may be familiar with community service already because it is something that your school requires. In fact, many high schools throughout the United States require their students to help out the community in some way in order to graduate. Though it’s often on the honor system to report what you've done, these high schools may require up to 200 hours of community service before they're willing to grant a degree. This type of requirement can be especially common at religious schools, and in particular at Christian schools. Many Christian schools set requirements based on the Biblical idea that it is the Christian’s duty to do community outreach with whatever â€Å"gift† they have been given by God. Because of this, many of these Christian schools will have branches of Christian non-profits, such as the Salvation Army or Habitat for Humanity, on campus or affiliated with the school, which make it much easier for students to donate their time. Many other schools require service learning. This term describes an approach to education that aims to connect lessons learned in the classroom with real-life lessons learned through community service. It is a practice that has become increasingly common in both high schools and universities in the United States, because educators like that the learning process benefits both the students and the communities. It allows students to learn more about their personal motivations, practice academic material outside of the context of the classroom and testing, develop critical thinking skills while solving real-world problems, and to think about problems and social issues in new ways. This kind of experiential learning, or applying what you have learned in the classroom to the real world, has a lot of positive benefits for students apart from meeting a requirement to graduate. These include a better understanding of the value of teamwork, decision-making skills, development of leadership abilities, and the gain of practical skills. For example, let’s imagine that as part of your school-required community service or service learning, you've decided to use the writing skills you developed in AP English to volunteer at a local non-profit that raises awareness of Alzheimer’s disease. As a strong writer, you may start out writing press releases for the charity. Immediately you would be developing a new skill: the ability to write for a targeted, non-academic audience. Working with a team, you would gain a better understanding of the importance of sharing information in a usableway. You might eventually expand your duties into other areas, such as managing the organization’s social media accounts, which would further develop your writing skills. Additionally, you would be gaining a new perspective on your community and on what life is like for a group of people that is often overlooked: the terminally ill. This could change how you see the world and your role in it. In fact, many students report that this kind of personal development is the most valuable part of a service learning projects. Personal Development Benefits One of the big ways that students will benefit from volunteer work is through personal development. This happens in a number of ways. First of all, many students learn about their personal strengths and weaknesses. When you're working on campaigns and projects and getting to see real-life results, you'll get to know how your personal attributes and actions can make a difference. Many of these qualities are things that students can’t get good feedback on in the classroom. For example, students may learn that they have excellent skills in coping with a crisis or other stressful situations, or may learn that they find taking charge of a team to be a struggle. This kind of exposure to different situations can then teach students how to further develop skills that they have, and how to work on areas they struggle in. In particular, students find that they are able to develop skills in leadership, communication, working well with a team, and finding solutions for problems. Many students also find that community service makes them more aware of and interested in issues of social justice. For example, if you spend your days going to school, playing sports, and doing homework, you will likely not spend a lot of time thinking about the problems that homeless people encounter. On the other hand, if you're working every day at a homeless shelter, you'll have a chance to dispel stereotypes about why people become homeless while also learning about the unique challenges that homeless people face in getting off the streets. Many homeless people face prejudice that makes returning to work and earning a self-supporting living more difficult than it is for non-homeless people. Once people learn more about struggles and injustices that other groups of people face, they are statistically more likely to want to actively take part in making a change in the policies and social structures that keep certain groups from succeeding. This change can take many forms, such as active campaigning, voting in elections, and continuing to volunteer time to important causes. Volunteering has also been shown to have one other, more tangible major personal benefit. Did you know that it’s actually good for your health? Want to build the best possible college application? We can help. PrepScholar Admissions is the world's best admissions consulting service. We combine world-class admissions counselors with our data-driven, proprietary admissions strategies. We've overseen thousands of students get into their top choice schools, from state colleges to the Ivy League. We know what kinds of students colleges want to admit. We want to get you admitted to your dream schools. Learn more about PrepScholar Admissions to maximize your chance of getting in. Health Benefits Numerous studies over the past several years have shown that volunteering isn’t just good for your mind and conscience; it’s also good for your body. By focusing on others’ problems instead of their own, students have reported reduced stress, and overall improvement in mood and health. Researchers at the London School of Economics and Political Science found a link between self-reported levels of good health and happiness and formal volunteer work. Furthermore, a study by United Health Group says that 76% of people who have volunteered in the past twelve months say that volunteering has made them feel happier, and 94% of people report that it improves their mood. 78% of volunteers say that it has lowered their stress levels. Volunteering can also help protect people from depression during challenging times, as it tends to help create a strong support system for participants. Volunteering also keeps people physically healthy by keeping them active. Certain activities, such as working to clean up a park or a beach, can be good exercise. Studies have shown that especially as people get older, volunteering in these kinds of projects can keep people healthy and can even lessen the symptoms of certain diseases. Of course, not all the benefits of volunteering are limited to the volunteer. Another big way that people benefit is in their involvement with their community. Community Benefits Volunteering allows students to become directly involved in their communities. Some students don’t realize how important volunteers are to the country and to many organizations. But try to imagine if no volunteers showed up to work tomorrow. Can you imagine what would change? Volunteers are responsible for many things that we take for granted. When hurricanes hit the south coast or wildfires burn up California, volunteers are critical in helping victims get re-settled, fed, and back to their â€Å"normal† lives as quickly as possible. Without volunteers, many of our country’s elderly would not be able to get food. Our parks and beaches would be much dirtier. Our children would struggle more without the help of volunteer tutors and mentors. To get a real idea of how important volunteers are to keeping the country running, let’s look at the numbers. The Corporation for National and Community Service says that in 2013, 62.6 million Americans volunteered 7.7 billion hours of work. The estimated value of this work is almost $173 billion. That’s almost as much as the GDP of Ukraine – just in volunteer hours! The top activities performed included raising money for important causes; collecting, preparing, and giving out food to people who need it; providing labor and transportation; tutoring and mentoring youth; and lending professional expertise. Furthermore, volunteers are almost twice as likely to donate to charities as non-volunteers. In all, just over 50% of Americans donated over $25 to charities in 2013, making at least $4 billion in donations. The knowledge that they are making a real differencealso affects student volunteers on a more personal level. When students know their work is helping someone, they show increased rates of self-esteem. Furthermore, students who volunteer are more likely to become actively involved citizens who take a strong interest in current events and local affairs, and are much more likely to vote. Apart from helping out your community here and now, you’ll also be helping out your future self. College Benefits Have you ever wondered if volunteering makes a big difference in college admissions? The truth is that it’s one of the most popular extracurricular activities that students list on their college applications. And while colleges don’t necessarily expect students to have spent all their free time volunteering, schools (especially the more competitive ones) will usually notice a total lack of community service. Colleges like seeing that students have done community service. Keep in mind that most universities want to admit students who are actively involved in activities that better themselves, and eventually, will better the world. Students who have been actively involved in community service in high school show colleges that they will be the type of student who will be actively involved in making the college community a better place to be. Eventually, that they will be the kind of people who care about changing the world. On a more practical level, the personal benefits and development that you will get from volunteering canbe great topic matter for a college application essay. The people you work with on community service projects will be good people to turn to when the time comes for letters of recommendation. They’ll be able to speak to your leadership abilities, passion, and character. Finally, doing this kind of work shows prospective schools that you can balance activities with your schoolwork and that you have good time management. Did you know that your volunteer work can also be helpful in paying for college? See our list of community service scholarships to see how you can make volunteering work for you financially. The good news doesn’t end there, though. The benefits of volunteering will follow you out of school and into the workplace, as well. Professional Benefits Did you know that employers love volunteers? TimeBank, a UK-based volunteering charity, and Reed, a recruitment company, partnered to create a study on how employers think about volunteer work. The results were very positive for those who have chosen to donate their time: 84% of employers agreed that volunteering is a good way for people to find work. 70% of employers said that volunteers have a better chance of getting a higher salary and a promotion. 80% of employers said that they like to see volunteer work on a resume. 23% of employers said that volunteering had helped their staff learn key skills, such as time management, communication skills, and leadership skills. The study also showed that half of the employees surveyed thought that their volunteer experience had helped them land their job, and up to 20% of employees thought that their volunteer experience helped them gain key skills in communication, leadership, and time management that were important to their jobs. As you can see, there are a lot of ways that your community service work will help you down the road once you start work, beginning with what you choose to do. Volunteering is a great way to explore different interests. High school students who do community service can try different kinds of work and work environments that they otherwise would likely not be exposed to at such a young age. Most paying jobs that high school students are eligible for – such as working in fast food - are not the most interesting. But volunteering can give you a chance to try things that you will be interested in as a career, such as working in social media, organizing events, or working in a specific type of institution such as a hospital. The experiences that you gain will also look great on your resume. Future employers will likely be much more interested in hearing about a fundraiser that you ran than they will be in hearing about your burger flipping skills. Why? A lot of the personal development benefits discussed above, such as leadership skills and the ability to collaborate with a team, are things that translate well to many jobs and workplaces. Networking is another major benefit of volunteering. As a volunteer, you will be very likely to meet like-minded individuals who share your interests. In the future, these people can be important contacts for writing letters of recommendation and for putting you in touch with the right people for scholarships and jobs. Now that you know that community service is an extracurricular that will help you out in your personal life, as well as in high school, college, and your professional life, what are you waiting for? How to Get Started If you’ve decided you’re ready to take the plunge, here are some Do’s and Don’ts to get you started in your volunteer career. Do try to find the right opportunity for you. It’s important to find something that you are going to enjoy and that you are capable of doing well. Ask yourself what kind of people you like working with (kids? people your own age?), whether you work better alone or as part of a team, how much time you have to commit and how much responsibility you can take on, and what special skills you have that you can contribute. Don’t volunteer abroad just because you think it looks better. Especially for college applications, admissions officers prefer to see a local long-term volunteer commitment than something that has only lasted a week or two during a summer break. Some volunteer abroad programs can also cause more trouble than good to local people. Do try to find a cause that you are passionate about. If you have always had an affinity for animals, try working at a shelter or a charity working on animal rights. If you have always valued education, try tutoring or an education charity. The more you care about the cause, the more dedicated you will be to continue working for it over a long period of time. Don’t be afraid of making a change. Ask questions when something doesn’t seem right. If you end up doing work that doesn’t seem like a good fit, is causing excessive stress, or if the experience isn’t allowing you to do the things you thought you would be working on, it’s ok to leave to find something else. Do enjoy yourself! The more you are having fun with volunteering, the more it will be a positive experience both for you and the organization you are working with. What’s Next? Now that you know the benefits, check out the 9 best places to do community service. If you need money for college, volunteering may be the answer. Check out our list of volunteer scholarships. Want to use your community service for your college applications? Check out how to write a good community service essay and how to get a community service letter. 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Monday, October 21, 2019

Biography of Jean Baptiste Lamarck

Biography of Jean Baptiste Lamarck Early Life and Education Jean-Baptiste Lamarck was born in Northern France on August 1, 1744. He was the youngest of eleven children born to Philippe Jacques de Monet de La Marck and Marie-Franà §oise de Fontaines de Chuignolles, a noble but not rich family. Most men in Lamarcks family went into the military, including his father and older brothers. However, Jeans father pushed him toward a career in the Church, so Lamarck went to a Jesuit college in the late 1750s. When his father died in 1760, Lamarck rode off to a battle in Germany and joined the French army. He quickly rose through the military ranks and became a commanding Lieutenant over troops stationed in Monaco. Unfortunately, Lamarck was injured during a game he was playing with his troops and after surgery made the injury worse, he was decommissioned. He then went off to study medicine with his brother, but decided along the way that the natural world, and particularly botany, were a better choice for him. Biography In 1778 he published Flore franà §aise, a book that contained the first dichotomous key that helped identify different species based on contrasting characteristics. His work earned him the title of Botanist to the King which was given to him by Comte de Buffon in 1781. He was able to then travel around Europe and collect plant samples and data for his work. Turning his attention to the animal kingdom, Lamarck was the first to use the term invertebrate to describe animals without backbones. He began collecting fossils and studying all sorts of simple species. Unfortunately, he became completely blind before he finished his writings on the subject, but he was assisted by his daughter so he could publish his works on zoology. His most well-known contributions to zoology were rooted in the Theory of Evolution. Lamarck was the first to claim that humans had evolved from a lower species. In fact, his hypothesis stated that all living things built up from the most simple all the way up to humans. He believed that new species spontaneously generated and body parts or organs that were not used would just shrivel up and go away. His contemporary, Georges Cuvier, quickly denounced this idea and worked hard to promote his own nearly opposite ideas. Jean-Baptiste Lamarck was one of the first scientists to publish the idea that adaptation occurred in species to help them better survive in the environment. He went on to assert that these physical changes were then passed down to the next generation. While this is now known to be incorrect, Charles Darwin used these ideas when forming his theory of Natural Selection. Personal Life Jean-Baptiste Lamarck had a total of eight children with three different wives. His first wife, Marie Rosalie Delaporte, gave him six children before she died in 1792. However, they did not marry until she was on her deathbed. His second wife, Charlotte Victoire Reverdy gave birth to two children but died two years after they were married. His final wife, Julie Mallet, did not have any children before she died in 1819. It is rumored that Lamarck may have had a fourth wife, but it has not been confirmed. However, it is clear that he had one deaf son and another son who was declared clinically insane. His two living daughters took care of him on his deathbed and were left poor. Only one living son was making a good living as an engineer and had children at the time of Lamarcks death.

Sunday, October 20, 2019

The 37 Most Expensive Colleges in the United States

The 37 Most Expensive Colleges in the United States SAT / ACT Prep Online Guides and Tips College is a costly investment. For the 2104-2015 academic year, the College Board determined that a "moderate" college budget for an in-state public college averaged $23,410. A moderate budget at a private college averaged $46,272. These are just averages. How expensive are the most expensive colleges in America? In this article, I’ll give you a list of the 37 most expensive colleges in the United States. I’ll explain why they’re so expensive and why you may able to attend one of them regardless of your financial situation. Why Are These Colleges So Expensive? All of the schools on this list are private institutions. These colleges are not subsidized by the government, but many of their students are on federal and state aid. Also, most of these schools are considered elite, selective institutions. Because they're trying to offer the same or better amenities as large public institutions without the government support and much smaller student bodies, the cost per student is significantly higher. Many of the schools on this list are small liberal arts colleges. You may notice that some elite private schools didn't make the cut, but they're not too far behind. Duke was at #44, Yale was at #61, and Harvard was at #78. Possible reasons that these schools are somewhat less expensive is because of larger student bodies and substantially larger endowments. There are many possible reasons for the rising costs of all colleges, but there are few definitive answers. About This List Most of the colleges that made the list are in the greater Los Angeles area or in the Northeast. Some notable exceptions are the University of Chicago, Northwestern, Oberlin, and Tulane. All of the schools are selective private colleges. Also, the difference in price between 1 and 37 is not that substantial relative to total cost. The most expensive college on the list, Sarah Lawrence, costs $65,480 annually and the 37th, Bates, costs $60,720. The 37 Most Expensive Colleges in the United States Criteria The total cost listed is the sum of tuition, room and board, and required fees. Required fees are mandated for all students and do not cover optional fees like student health insurance fees or orientation fees for incoming students. The costs for books and supplies, transportation costs, or personal expenses were not included, even though many colleges include these in their costs. Also, these totals costs are from the 2014-2015 school year. The List #1: Sarah Lawrence College (Yonkers, NY) $65,480 #2: Harvey Mudd College (Claremont, CA) $64,427 #3: New York University (New York, NY) $63,472 #4: Columbia University (New York, NY) $63,440 #5: University of Chicago (Chicago, IL) $62,458 #6: Claremont McKenna College (Claremont, CA) $62,215 #7: Fordham University-Lincoln Center (New York, NY) $62,192 #8: Bard College (New York, NY) $62,012 #9: Dartmouth College (Hanover, NH) $61,947 #10: Scripps College (Claremont, CA) $61,940 #11: Oberlin College (Oberlin, OH) $61,788 #12: Trinity College (Hartford, CT) $61,756 #13: Pitzer College (Claremont, CA) $61,750 #14: Bard College at Simon’s Rock (Great Barrington, MA) $61,735 #15: Northwestern University (Evanston, IL) $61,640 #16: University of Southern California (Los Angeles, CA) $61,614 #17: Haverford College (Haverford, PA) $61,564 #18: Rensselaer Polytechnic Institute (Troy, NY) $61,529 #19: Fordham University-Rose Hill (Bronx, NY) $61,472 #20: Drexel University (Philadelphia, PA) $61,383 #21: Johns Hopkins University (Baltimore, MD) $61,306 #22: Tufts University (Medford, MA) $61,277 #23: Amherst College (Amherst, MA) $61,206 #24: Wesleyan University (Middletown, CT) $61,198 #25: Carnegie Mellon University (Pittsburgh, PA) $61,186 #26: Vassar College (Poughkeepsie, NY) $61,140 #27: University of Pennsylvania (Philadelphia, PA) $61,132 #28: Williams College (Williamstown, MA) $61,070 #29: Occidental College (Los Angeles, CA) $60,972 #30: Cornell University (Ithaca, NY) $60,964 #31: Connecticut College (New London, CT) $60,895 #32: Tulane University (New Orleans, LA) $60,861 #33: Eugene Lang College-The New School (New York, NY) $60,852 #34: Franklin Marshall College (Lancaster, PA) $60,799 #35: Georgetown University (Washington, DC) $60,768 #36: Brandeis University (Waltham, MA) $60,750 #37: Bates College (Lewiston, ME) $60,720 Many of These Schools Are Still Accessible These prices are just the listed sticker prices. At most of these institutions, the vast majority of students are paying significantly less because of financial aid and scholarships. Many of these schools have very generous financial aid programs. Typically, they'll try to meet the demonstrated financial need of each individual student. At Columbia, #4 on the list, 49.7% of full-time undergraduates receive need-based aid and the average need-based scholarship or grant award is $42,238.This cuts the average cost of attendance down to around $20,000. In fact, many of the schools on the list will meet 100% of your demonstrated financial need. What's Next? Learn more about how much colleges really cost. If you need help financing your education, you may want to check out this post about the work study program. Other than costs, read about the differences between public and private colleges. Want to improve your SAT score by 160 points or your ACT score by 4 points?We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. Download it for free now:

Saturday, October 19, 2019

A negotiation plan Essay Example | Topics and Well Written Essays - 1000 words

A negotiation plan - Essay Example Among the above mentioned issues, the labor union will have its major focus on the first two i.e. the basis for the increase in wages; and the process of selecting the individuals for training and other advantages. Toward the first one, the group will bargain on the need of an amount that would cover both the past inflation and past contributions toward productivity. Moreover, there should be provisions to issue the payment since the commencement of the agreement and the work group will not propose any alternative on this regard. Productivity bonus should be paid equally across the entire work group considering it as the group bonus. Secondly, regarding the workplace arrangements, the union would demand that employees should have the right to go on paid training when they think it is essential for them to improve their level of performance; and if they do not find a higher job even after the training, they should be paid a ‘trained allowance’. The trained employees must be given the priority for promotion when there is a vacancy at the higher levels. The work group considers these issues as the most important factors that have a direct impact on the individuals because of several reasons. To illustrate, rewards like wage increase is the most brittle factor that can influence most of the individuals in a working group. An average worker is always concerned about an unexpected inflation that would affect his/her economic stability as it becomes impossible for him to meet both ends with the limited income. As Saunders (249) states, ‘negotiation theory that concentrate only on what happens around the negotiation table’ does not meet the exact goal; instead it should have rather comprehensive approach toward the real issue underlying. The basis of wage rise that the union will propose is relevant to the context for two reasons. Firstly, there was a considerable increase in the

Friday, October 18, 2019

Limited Collection Brand in Marks & Spencer Essay

Limited Collection Brand in Marks & Spencer - Essay Example This research will begin with the statement that Marks and Spencer Group (M&S) is a retailer of clothing, foods and Homeware. It operates through owned stores and franchise stores. The company has two reportable geographic segments: UK and international. M&S operates through a chain of 622 stores across UK and 278 international outlets throughout 34 countries worldwide The company's operations can be categorized under two divisions: food and general merchandise including clothing and home ware. The food division focuses on fresh, natural, healthy food; special celebration products; authentic ready meals and exceptional everyday food such as Oakham' chicken and Aberdeen Angus steaks. It chain of 205 franchised Simply Food' stores operates in railway stations, Heathrow Airport and motor service areas. These stores offers its customers an opportunity to shops between visits to the company's main stores. The clothing division product portfolio includes women's wear, men's wear, lingerie children's wear and footwear. Hong Kong, India, Bangladesh, Sri Lanka and Turkey offices provides the raw materials to the division. This division offers some prominent brands which includes: Autograph, Limited Collection, Cellozione, Blue Harbour, Girls Boutique, Per Una and Ceriso. The home division product and services caters homeware and home accessories; kitchen and tableware; lighting; and furniture products. The division also offers catalogue and online services.

Research Proposal Example | Topics and Well Written Essays - 1000 words - 3

Research Proposal Example ng adults spent a lot of time on the social media and can be described as dabbing to virtual life as a result of websites like Facebook, Google plus, twitter Instagram and many others. The number of users of these websites continues to increase and their popularity is increasing as well. While it is an indication of the increased application of technological methods in communication, the number of hours that people are spending on these sites continues to increase as well. Although the communication can be productive and impact a positive change on someone, the misuse of the sites quickly becomes habitual and is thereby described as an addiction. It causes the users to value social media more than anything else. The study of social media addiction of people can provide analysis of many elements which affect people seal life as a result of the social media usage. This study will focus on the effects of addiction to the social media and not just its use. The usage of social media is a topic which has been widely studied due to the relevance of the social media in the modern times. It is extremely difficult for individuals to fail to utilize a social media site in the modern times due to their popularity. Increased usage has, however, been described as leading to addiction just like any other content which is addictive (Coyne, Padilla-Walker, & Howard, 2013). While the users commonly encounter various problems which include bullying and other related cybercrimes, addiction to these sites presents a daunting challenge to the people in the real life. Social media addiction poses a threat to the self-esteem of an individuals as it makes them lack confidence in real life (Twenge, 2013). This makes the users to look towards outwards acceptance of self-esteem rather than building confidence from within. The mental health of users has also been a factor that could be influenced by the addiction of individuals to the social media. Individuals have been observed to

Thursday, October 17, 2019

Divorce Essay Example | Topics and Well Written Essays - 500 words - 5

Divorce - Essay Example But it is only a background: each divorce has own main and accompanying reasons and motives. Divorce doesnt happen unexpectedly. As a rule it is preceded by the period of the conflict relations in a family. The thoughts about the divorce reflect the degree of satisfaction with the relationships in a family (Simons, 1996). Till 1980s sociologists believed that women suffer from divorce more than men (material difficulties, looking for a job, taking care of children, limited opportunities to get a new family, etc.). Since 1980s psychologists came to the conclusion that the men need marriage even more, than women. â€Å"Nearly all people enter marriage with the hope and expectation that their marriage will be a lifelong, mutually rewarding relationship. So it’s not surprising that divorce is a painful experience for almost everyone† (What are the possible consequences of divorce for adults?) .Their dissatisfaction with loneliness is sharper and longer. Men have more opportunities to find a new partner, but many of divorced men stay alone. After divorce the budget of a man is reduced. Moral damage is connected with the restriction of opportunities to see the children. Divorced women strongly suffer from the feeling that they are not needed any more. They perceive emotional difficulties of divorce more intensively, but come to psychological balance rather quickly (Bianchi, Subaiya, & Kahn, 1999). The strength of suffering of the divorced spouses depends on the unexpectedness of divorce. The one who was offered to divorce suffers more. Aged people get a bigger trauma, than young, because for them it is more difficult to adapt to new life. Among newly divorced men and women the level of alcoholism, physical diseases and depressions is higher that often is a direct result of change of life after divorce. However, for some people divorce is a desired relief, which brings freedom from restrictions, duties and sincere

Strategic Audit on T-Mobile Assignment Example | Topics and Well Written Essays - 1750 words

Strategic Audit on T-Mobile - Assignment Example It gives its services using CDMA technique using the latest technology of 4G LTE. On 26th March 2013, T-Mobile came up with the un-carrier value proposition by introducing a simple concept of easy choice service and provided the customers with low price for all the popular devices in US. From April the company started selling iPhone at all the stores owned by the company along with the easy choice plan. The company by the end of first quarter of 2013 had around 34 million customers, with a total increase of 579,000 customers compared to the fourth quarter of 2012. The adjusted EBITDA for the company was $1.2 billion showing an increase of 12.4% from the last quarter of 2012 (T-Mobile, 2009). The Companies mission statement is to become world’s highest rated service providing company. With reference to the mission statement the main objective of the company is to satisfy customer needs and give the best service to the customers across the world. Because of this the company provides variety of innovative and user friendly products and services. Everywhere in the world the consumers can tally on the release of our three corporate values – reliability, simplicity and inspiration. It creates the inspiration by giving innovative services that fulfill the daily life goal of the customers. Apart from concentrating over the customers the company also takes part in various activities for the betterment of the society as a CSR activity (T-Mobile, 2014). The financial and strategic objectives of the company revolve around the single objective of having a continuous growth in the company’s revenue and also increase the sales volume by providing the best value added service to the customers. T-Mobile US Inc has shown higher growth rate than its biggest competitor AT&T Inc for the last two quarters in 2013 which shook the whole of US market. From March 2013, T-Mobile has

Wednesday, October 16, 2019

Divorce Essay Example | Topics and Well Written Essays - 500 words - 5

Divorce - Essay Example But it is only a background: each divorce has own main and accompanying reasons and motives. Divorce doesnt happen unexpectedly. As a rule it is preceded by the period of the conflict relations in a family. The thoughts about the divorce reflect the degree of satisfaction with the relationships in a family (Simons, 1996). Till 1980s sociologists believed that women suffer from divorce more than men (material difficulties, looking for a job, taking care of children, limited opportunities to get a new family, etc.). Since 1980s psychologists came to the conclusion that the men need marriage even more, than women. â€Å"Nearly all people enter marriage with the hope and expectation that their marriage will be a lifelong, mutually rewarding relationship. So it’s not surprising that divorce is a painful experience for almost everyone† (What are the possible consequences of divorce for adults?) .Their dissatisfaction with loneliness is sharper and longer. Men have more opportunities to find a new partner, but many of divorced men stay alone. After divorce the budget of a man is reduced. Moral damage is connected with the restriction of opportunities to see the children. Divorced women strongly suffer from the feeling that they are not needed any more. They perceive emotional difficulties of divorce more intensively, but come to psychological balance rather quickly (Bianchi, Subaiya, & Kahn, 1999). The strength of suffering of the divorced spouses depends on the unexpectedness of divorce. The one who was offered to divorce suffers more. Aged people get a bigger trauma, than young, because for them it is more difficult to adapt to new life. Among newly divorced men and women the level of alcoholism, physical diseases and depressions is higher that often is a direct result of change of life after divorce. However, for some people divorce is a desired relief, which brings freedom from restrictions, duties and sincere

Tuesday, October 15, 2019

International Market Entry and Development Essay - 1

International Market Entry and Development - Essay Example The paper explores a number of issues enveloping international market entry and growth. International Market Entry and Development A. Market Research in Appraising Foreign Market Potential The practice of market research pursues to expose the market potential of targeted foreign market. This encompasses investigating if the targeted export market enjoys the crucial means to procure imported products, in addition, to whether the needs and prospects of the target market are being sufficiently met. The evaluation of new market’s potential incorporates information centering on features such as competition, market volume and the economy expansion rate, and present trade restrictions. The examination of market prospective also engages competitive strength analysis by highlighting the competitors in the new market, additionally to comparative extent delivery of the objective market shares (Sakarya, Eckman & Hyllegard, 2007). Market size evaluation incorporates an appraisal of the all ocation of the overall market share within the new country that the organization can sensibly anticipate acquiring, as dictated by dynamics such as competition and pricing. Market growth evaluation entails an appraisal of the present demand and future claims, plus unexploited or unmet demand (Sakarya, Eckman & Hyllegard, 2007). There are a number of competitive tactics that may manipulate the choice of new foreign markets such as forestalling the entrance of related organizations or going into a market where huge competitors are deficient. B. The Considerations for Product Adaptation in Foreign Markets Product adaptation details a broad range of concerns varying from superiority and manifestation of products, to other features such as assembly, casing and modeling. Merchandise may have to be adjusted dynamically to match the physical, social, or obligatory prerequisites of a new market (Ajami, 2006). Likewise, the product might be redesigned or repackaged to suit varied consumer lik ings. In seeking product adaptation, organizations ought to be cautious of the downsides linked with adaptation. Inclusive adaptation of marketing solutions is not fundamentally constructive given that it hinders organizations’ capacity to employ benefits derived from features such as economies of scale (Ajami, 2006). Nevertheless, product adaptation assists organizations to appraise and efficiently exploit enriching differentiations, in addition, to distinguishing the company’s attributes and potential. Several factors that steer product adaptation encompass differential exploitation of conditions, political and regulatory pressures, changing client behavior models, competition, and coalition with the marketing concept (Goldman & Nieuwenhuizen, 2006). The edifying and psychological dynamics impacting on product adaptation comprise of facets such as consumption models (models of purchase and patterns of usage), and psychological attributes outlining outlooks towards th e brand. C. Approaches to Amending Promotional Tactic to Fit Foreign Markets Segmentation, Targeting, and Positioning Segmentation in marketing is typically commenced at the client level. Nevertheless, in international

Monday, October 14, 2019

Political and religious corruption Essay Example for Free

Political and religious corruption Essay ‘Tragedy’ and ‘satire’ are the weapons used by men of letters for different ends. Tragedy arouses the emotions of pity and fear in the hearts of viewers and readers; while satire makes them laugh as well as make them see the real picture lying beneath the one appeared on the surface. Now, let us discuss in detail how the use of satire in writing literature conveys effectively the message of religious and political corruption as compared to the use of tragedy. Tragedy primarily deals with the disaster that comes to those individuals who represent the flaws and shortcomings that are, to a large extent, universal. Tragedy is basically a cry of protest against the tragic circumstances and situations in which the tragic hero finds himself. Aristotle in his book Poetics says that the aim of these incidents is to arouse the emotions of ‘pity and fear’ in the hearts of viewers and readers in order to carry out the ‘catharsis of such emotions’. He also believes that these incidences should happen to the hero not by some ‘vice and depravity’ on the part of the hero but by some ‘error of judgment. ’ So the basic aim of tragedy is purging the viewer of the emotions of pity and fear and not that of making him particularly aware of the corruption, depredations, degradations and problems existing in the society in the realms of morality, religion, politics etc. So a number of times it happen that the viewers weep at the tragic situations instead of thinking about the social and religious problems encountered by the hero of the story. For instance, ‘the duchess of Malfi’ makes the viewers less aware of the political and religious corruption existing at the time in the Jacobean society and more aware of the misfortunes and troubles that fall upon the duchess and Antonio –her second husband. Yes, Webster raised his fingers towards the corrupt practices existing at the time in the palace by the example of greedy, lunatic and incestuous Ferdinand and towards the corrupt religious situation by the example of the cardinal-the duchess’s brother, who plays an important role in conspiring the murder of her sister, has a mistress and then killed her afterwards. The murder of Duchess, Antonio, Bosola and the excessive terror and violence in the last scenes nauseates the viewers and do not give them enough time and space to ponder over the social, political and religious violations existing at the time and discussed in the play. On the other hand, satirist is believed to be a kind of self-appointed guardian of social standards, of truth, of moral, political, religious and ethical values. He is a man who is supposed to take upon himself the task of correcting, censuring and ridiculing the follies and vices existing in the society and thus to bring contempt and derision upon the deviations and irregularities from civilized and widely-acceptable social norms. Satirical comedy is meant to be dramatic, whose basic and primary purpose is to expose, censure and ridicule the follies, vices and shortcomings existing in the realms of society, ethics, politics, and religion. Thus as compared to the use of tragedy the use of satire works best as a weapon aiming at exposing the political, religious and social and ethical corruption of an era. Let us discuss it in detail with the examples of Gay’s ‘the Beggars’ Opera’ and Jonathan Swift’s ‘the Gulliver’s Travels’. Gay’s ‘The Beggars’ Opera’ is intended to be a satire on the politics and society of his time. The heroes and the heroines undergo many difficulties and there were, at times, clear indication of impending deaths. But the opera does not make the viewers teary, rather it amuse them, make them laugh and at the same time made them think on the bleak political, ethical, and social scenario prevailing at the time. The viewer’s attention was directed towards the political corruptions, thefts, and high-handed tactics adopted by Sir Robert Walpole-the prime minister of England at that time- by the examples of Peachum and Macheath. Peachums behavior as a thief, as a womanizer, and as a double-crosser directly aims at Sir Robert Walpole, who was also known as a corrupt leader as well as an adulterer at that time. Then the attention of the viewers was directed towards the corrupted ethical state of the society of that time by the examples of unmarried mothers in ‘the Beggars Opera’, by the example of Polly and Lucy. The corruption is shown to be permeated deep down in the annals of the society and the music, crispy and thought provoking scenes and dialogues made the viewers seriously think and ponder on the state of affairs. Unlike ‘the Duchess of Malfi’, the viewers of the Beggars Opera’ did not weep but the use of satire made them think and make decisions about the issues towards which there attention was directed by the writer of the Opera. Jonathan Swift in his book ‘the Gulliver’s Travels’ made pungent satire at the political, ethical, intellectual, physical and religious aspects of the English society of that time. He criticizes the politics of his time by making the readers feel, with the examples of the distribution of three colored ribbons to the winners in games, walking on tight rope, etc. that how the political offices at that time were distributed, not on the basis of intellect and political sagacity but on the basis of petty acrobatic skills. Flimnap-the Lilliputian treasurer, is a grotesque representation of Sir Robert Walpole. The Lilliputian palace intrigues are the satiric representation by Swift of the English Royal palace’s state of affairs. The king of Lilliput made the readers think about the greed and avarice and tyranny to which a king can fall. The by the example of Brobdingnagian King’s references to the politics and history of England of that time was very cutting and biting for the English readers- who think the politics of their country as the best of all in the world. The King’s remark that only justice and common sense is required to run the governments and not the bulk of books is also very thought provoking. All this was meant by Swift to shake the people out of their complacency and make them think how horrible the state of affairs has been. Swift made a reference to the corrupted religious situation of the time by discussing the feuds between the big-endians and the small-endians. This was a war waged between two groups of Lilliputian, one group insist on breaking the egg from its smaller end , while the other insisted on breaking it from the bigger end. This is a reference to the intellectual conflicts going on between the different religious sects at that time in England. The most pungent and intensely thought provoking satire is written in the last section of the book where yahoos are compared with the brutal elements in the human nature while horses-houyhnhnms-are considered as the paragons of wisdom and intellect. Yahoos are always ready to fight with one another; they are portrayed as very greedy, querulous, lecherous and gluttonous. Houyhnhnms are thinking of banishing the race of yahoos from their area. Thus from this whole discussion we gather that as compared to tragedy , the weapon of satire is better able to convey the social, political and ethical corruption prevailing at the time of writing of that piece of art to the readers and viewers. Tragedy primarily discusses the sorrows and misfortunes related to a single person, it purges the viewers and readers of the emotions of pity and fear by evoking and fashioning these emotions in them. Satire on the other hand is a tool with which the writer exposes the multi-dimensional social ills of the society with a smile on his face. The readers and viewers laugh with the writer and at the same time think about making amends of the faults and problems prevailing in the society. The satire does not nauseate the viewers and so they are left with enough energy to think about correcting the society and doing the needful.

Sunday, October 13, 2019

What Are The Mechanisms Of Ozone Depletion Environmental Sciences Essay

What Are The Mechanisms Of Ozone Depletion Environmental Sciences Essay The mechanism of global warming can be described by the Greenhouse effect; by which, solar radiation enters through the Earths atmosphere and is retained, resulting in increased temperatures. Solar radiation entering the Earths atmosphere is partially absorbed by the Earths surface and partially re-radiated back into space. However, having lost energy to the Earths surface, the infrared radiation is of an increased wavelength and is consequently absorbed by certain gasses (greenhouse gasses) in the Earths atmosphere. This results in the radiation being recycled within the Earths atmosphere, leading to an increased average temperature of the Earths near surface air and oceans. Ozone depletion is a result of the catalysed reactions between ozone and atomic chlorine or bromine. Chlorofluorocarbons (CFC) and bromofluorocarbons have the greatest ozone depleting potential as they form atomic chlorine and bromine upon photodissociation. Carbon dioxide, methane and nitrous oxide can be considered to have the greatest global warming potential due to their abundance. From these gasses, nitrous oxide is 310 times more effective in absorbing radiation than carbon dioxide, and methane is 21 times more effective than carbon dioxide. What is the difference between winter and summer smog? Explain the mechanism by which they are generated. Winter and summer smog can be differentiated by their constituents and thus their environmental impacts. Winter smog is made up of sulphur dioxide, partially oxidised organics and particulate matter (PM), the concentrations of which are typically increased in winter months due to increased heating from sulphur rich fossil fuels such as coal and oil. It is also referred to as reducing smog. These pollutants can affect the respiratory system and form secondary pollutants. Sulphur dioxide can form acid rain from oxidation catalysed by PM or free radicals of oxygen and nitrogen. Summer, or photochemical smog, tends to occur as a result of increased nitrogen oxides or hydrocarbon concentrations in the atmosphere due to exhausts from internal combustion engines. Nitrogen oxides can be broken down by sunlight to form radicals causing low level ozone formation, nitric acid, peroxides, aldehydes and ketones. Both types of smog are more likely to form in cities and as a result of lack of wind. The lack of air movement can result in a temperature inversion which causes a layer of still warm air to cover a layer of cool air, trapping any pollutants below the warm layer near ground level. What is the difference between stratospheric and tropospheric ozone? Explain the role of NOx in the generation of tropospheric ozone. The ozone layer typically occurs in the stratosphere and is naturally formed and decomposed from the reactions between oxygen and oxygen free radicals which are formed from the decomposition of oxygen by ultraviolet light. The stratosphere is typically located from around 20 to 50 km above the Earths surface. The occurrence of ozone at this level helps absorb harmful ultraviolet light. Tropospheric ozone refers to ozone occurring in the troposphere (up to 12 km above the Earths surface). Ozone at this level can be poisonous and also acts as a greenhouse gas with a heat trapping effectiveness of 2000 times greater than CO2. The breakdown of nitrogen dioxide by ultraviolet light can lead to the formation of oxygen free radicals. NO2 = NO + O* O* + O2 = O3 Describe the mechanisms for acid rain and eutrophication, respectively. What are the effects of these two environmental impacts? Acid rain is primarily formed from SOx and NOx. Sulphur oxides are oxidised in the presence of ultraviolet light to form sulphur trioxide gas, through reacting with water, this can then form acid rain in the form of sulphurous acid and/or sulphuric acid. Nitrogen oxides are oxidised to nitrogen dioxide which may then lead to the reaction between water and nitrogen dioxide allowing for the formation of nitric and nitrous acid. Acid rain can effect vegetation, lakes and rivers, buildings and human health. Eutrophication is the process that occurs due to excessive growth of habitats to an extent where the growth becomes destructive to the environment. Use of artificial fertilisers from farming leads to increased levels of nitrates and phosphates accumulating in lakes and rivers. The nitrates and phosphates are nutrients that increase the growth of plants and algae. When these plants and algae die they can decompose aerobically to form carbon dioxide and water. With excessive decomposition, oxygen will be depleted and anaerobic decomposition will occur, leading to formation of hydrides such as ammonia and hydrogen sulphide. More species will die due to poisoning caused by the hydrides and may eventually lead to the death of the entire habitat. Which of the above environmental impacts do nitrogen oxides contribute to? Explain how. Nitrogen oxides contribute to the formation of acid rain either in the form of nitric or nitrous acid. Upon absorbing ultraviolet light nitrogen dioxide breaks down to form nitrogen oxide and oxygen radicals. These radicals can combine with water to form hydroxyl radicals which may then react with nitrogen oxide to form nitric acid. Air pollution prevention and control What options exist for the prevention and clean-up of acid gas emissions? Emissions of nitrogen oxides can potentially lead to the formation of acid rain, with several options available for its prevention and clean-up. These primarily include selective catalytic reduction (SCR), non-selective catalytic reduction (NSCR), and selective non-catalytic reduction (SNCR). The power industry uses SCR for post-combustion NOx clean up and/or low NOx burners and SNCR for prevention of NOx formation in the combustion stage. SCR involves reacting ammonia or urea with NOx over vanadium oxide catalysts in a temperature range of 300 to 400  °C and can remove up to 95 % of NOx. SNCR involves injecting ammonia/urea in the furnace at temperatures of 900 to 1100  °C, with a removal efficiency of only around 30 %. Non-selective catalytic reduction removes NOx in a method analgous to the three-way catalytic converter used in the automotive industry. This is typically applied in the chemical industries. Sulphur oxides can also lead to acid rain. Flue gas desulphurisation (FGD) plant involves scrubbing the gasses to remove sulphur oxides. For example, limestone scrubbing is one method of FGD, which converts sulphur oxides into calcium sulphate dihydrate (gypsum). Which stages in the life cycle of an installation must be considered within the IPPC Directive? All stages of the life cycle should be considered; i.e. from cradle to grave. In order to provide an integrated approach, no stage can be left out, and a full assessment of the environmental, social and economic impacts should be carried out for the raw materials, processing, storage and transportation stages involved. Which industrial sectors are regulated by the IPPC Directive? Why do you think these sectors have been included under the IPPC Directive? The industries covered by the IPPC directive include: Energy Production Refineries Production Processing of Metals Production of Cement Lime Activities involving Asbestos Glass, Glass Fibre and other Mineral Fibre Manufacture Ceramic Production Organic Inorganic Chemical Production Fertiliser Biocide Manufacture Pharmaceutical Manufacture Explosives Manufacture Storage of Bulk Chemicals Incineration Landfill Paper Manufacture Tar Bitumen Processes Coating, Printing and Textile Activities Dye, Ink and Coating Material Manufacture Timber Activities Rubber Activities Processing of Food; and Intensive Farming. These sectors have been included under the Directive due to the requirement of controlling and limiting the environmental impact these industries can have during the manufacturing process of their relevant products. Case study: Identifying BAT for the prevention and control of NOx emissions Nitric acid manufacture What influences the yield of nitric acid? Why is it important to maximise its yield? The yield of nitric acid is effected by: The efficiency of the catalytic oxidation of ammonia to nitrogen monoxide The efficiency of the oxidation of nitrogen monoxide to nitrogen dioxide The absorption of nitrogen dioxide in water to produce nitric acid Maximising its yield allows for an efficient production; thus generating more nitric acid at the same operating costs to achieve larger profits. Maximising yield means minimising unreacted nitrogen oxide which is consequently released to atmosphere. Why are the reaction (6) and the reverse of reaction (4) undesirable in this process? The reverse of reaction 4 results in a lower NO2 yield as the reaction will tend towards the NO and O2 through a shift in equilibrium to the reactants. As the absorption of NO2 is limited by NO2 concentration, it is desirable to ensure the forward reaction in reaction 4 occurs in order to maximise HNO3 yield. In addition to this, the occurrence of a reverse reaction (4) in which NO is formed allows for the possibility of nitrous acid formation (reaction 6). Again this is undesirable as NO2 is consumed in producing an unwanted product, consequently leading to a lower NO2 concentration and lower HNO3 yields. In addition to NOx and N2O emissions, what other releases to air, water and land can be expected from nitric acid manufacture? What environmental impacts can these releases cause? Carbon dioxide emissions from burning fossil fuels for energy requirements and transportation should be accounted for, as well as ammonia, nitric acid, nitrous acid leakages. Pollution prevention and control of NOx emissions Pollution prevention: Process design and operation The efficiency of NO2 absorption to produce HNO3 can be increased further by increasing pressure. Discuss the advantages and disadvantages of pressurised systems in terms of their technical complexity, environmental impacts (including noise) and economic costs. As stated, the main advantage of a pressurised system is the improved absorption of NO2 to produce HNO3, this results in less NO2 being released to the atmosphere. However, pressurised systems require a more complex design as a result of the serious safety considerations associated with them. Failure of pressurised systems can lead to death or injury of workers on-site as well as the release of NO2 to atmosphere. Pressurised systems would require increased compression and pumping duties, contributing to increased noise pollution, operating costs and maintenance costs. The absorption column may not have been designed for higher pressures, i.e. materials of construction, column thickness, and column closures may not be suitable, and thus changes would have to be made, resulting in increased capital costs. These costs must be compared with the improved nitric acid yield in order to fully asses this option. Discuss the advantages and disadvantages of supplying pure oxygen instead of air for oxidation of NO in the HNO3 absorption tower. Address the following issues: What are the advantages of using pure oxygen instead of air in terms of oxidation efficiency, gas flowrates, column volume etc? Using pure oxygen rather than air (21% oxygen, 79% nitrogen), allows for the volumetric gas flowrate of this stream to be reduced by 79% due to the elimination of nitrogen. This results in an improved oxidation efficiency, allowing more NO2 to be formed by reducing the amount of NO. The reduced gas flowrate results in a reduced column volume, assuming a constant gas hourly space velocity. Unlike air, oxygen does not come for free it has to be produced by separating nitrogen from air (you may remember this from the last years coursework on Waste Water Treatment within the module Introduction to Sustainable Development). This is usually done in a large scale cryogenic process (separation by cooling). What are the implications of this in the context of IPPC (i.e. taking into account all life cycle stages associated with this process option)? The cryogenic separation of oxygen from air is a highly energy intensive process. The main stages of the process include compression, cooling, and distillation. From a life-cycle perspective, the raw material (air) is free; however, it is the processing stage which incurs the majority of environmental impact. Energy is required in the compression and distillation stages of the process, thus, assuming energy is obtained from fossil fuel sources, greenhouse gas emissions become a concern. Further to this, the requirement of refrigeration may have environmental impacts depending on the refrigerant used. Transportation of the oxygen to the nitric acid plant may have potential impacts; however, in comparison to the processing stage, any environmental impacts are likely to be relatively small. Therefore the production of oxygen does have an environmental impact to an extent; however, the IPPC does not apply to this industry, so due to the lack of IPPC regulation in the sector inefficiencie s or environmental concerns may indirectly effect the nitric acid manufacturing process. The key concern of using pure oxygen is the additional cost. Pollution prevention: Extended absorption Explain the idea behind extended absorption. What is the link between the number of transfer units (NTU) in the HNO3 absorption tower and the NOx emissions? Extended absorption (EA) allows for any unreacted nitrogen dioxide to be absorbed in a second tower, thus increasing nitric acid production and reducing NOx emissions. Oxygen can also be injected to oxidise any nitrogen monoxide so that it can be absorbed in the new absorption column. An increase in NTU in the HNO3 absorption tower results in lower NOx emissions. How would you calculate the required height of the absorption column to increase the HNO3 production yield and reduce the emissions of NOx from the manufacture of nitric acid? What information and data would you need to do that? (See the Appendix.) In order to calculate the required height of the absorption column, the NTU must be calculated. This requires the gas mole fraction at the top of the column (yT) and at the bottom (yB). The gradient of the operating line, R is also required, this is obtained from the equilibrium of the operating line, the molar gas flowrate, and the molar liquid flowrate per unit tower area. This value is then multiplied by the height of a transfer unit which is given by: Where G is the molar gas flowrate per unit tower area, ky is the overall mass transfer coefficient, and a is the interfacial area per unit packed volume. Height = HTU x NTU Pollution control: Absorption in sodium hydroxide IPPC requires consideration of wider impacts of an activity, which means consideration of a number of life cycle stages of a process. In the case of NOx scrubbing by sodium hydroxide, what parts of the life cycle must be included for BAT assessment? Analysing this system, explain why absorption of NOx in NaOH is unlikely to represent BAT. All stages of the life cycle must be considered for a through and exhaustive analysis of BAT assessment. The final stage of the life-cycle for the sodium hydroxide scrubbing option is a key concern. The disposal of the sodium nitrite-nitrate effluent is a key concern. If no suitable disposal or recycle method can be identified for the effluent, then along with the increased costs incurred from NaOH feedstock and increased pumping, this option does not represent BAT. Pollution control: Non-selective catalytic reduction (NSCR) Non-selective catalytic reduction (NSCR) is quite efficient in reducing the emissions of NOx from the manufacture of nitric acid. However, it also generates additional environmental impacts. Identify these impacts for hydrogen and natural gas as reducing agents, respectively, and explain the origin of these impacts. The requirement of a reducing agent such as hydrogen and natural gas has significant environmental implications. Hydrogen is likely to have been produced from steam reforming of fossil fuels, and natural gas is a fossil fuel, therefore, consideration should be given to the process of extracting the fossil fuel, transporting it and processing it. In the case of hydrogen, the processing stage is likely to be a key concern as it is an energy intensive process which results in further emissions and additional environmental impacts. For example, steam reforming of methane to produce hydrogen and carbon monoxide is an endothermic reaction requiring heat generated often from burning fossil fuels. However, using methane as a reducing agent leads to the formation of CO2 in the process. Calculate the amount of carbon dioxide in t/yr generated in the NSCR process which removes 1.5 t NO2/day from the nitric acid tail gas using natural gas. Calculate the potential for global warming from these CO2 emissions. Compare that with the global warming avoided by the removal of the equivalent amount of N2O per day from the same tail gas. What do you conclude? 2CH4 + O2 + 2NO2 +2N2O = 2CO2 + 4H2O + 3N2 Mass of NO2 = 1500 kg/day Molecular Weight of NO2 = 46.01 kg/mol Moles of NO2 = 32.60 kmol/day Moles of CO2 = (2/2) * Moles of NO2 = 32.60 kmol/day Molecular Weight of CO2 = 44.01 kg/kmol Mass of CO2 = 1.4 t CO2/day Assuming that the plant is operational for 365 days per year, the annual amount of carbon dioxide generated by the NSCR process can be estimated as 524 tonnes per year. N2O has a heat trapping effectiveness of 150 times that of CO2; thus the saving made by converting N2O to CO2 is substantial with regards to global warming potential. The N2O produced would be equivalent to 78,551 tonnes of CO2 per year. Use the example in the previous question to calculate the equivalent acidification impact that would be avoided by the removal of NOx with the NSCR process. Compare this avoided impact with global warming generated through the use of natural gas to remove the NOx. What do you conclude? How should we approach situations like these, where reducing one environmental impact causes another? The classification factor for NOx is estimated as 0.7 kg/kg. Therefore acidification savings can be estimated as 1050 kg/day which is equivalent to 383 tonnes per year. In comparison to the 524 tonnes of CO2 produced per year, it can be noted that the reduction of the acidification impact does not outweigh the CO2 produced in the process. Pollution control: Selective catalytic reduction (SCR) What are the main environmental and safety concerns associated with the selective catalytic reduction (SCR) process? SCR typically uses ammonia or urea to catalytically convert nitrogen oxides to molecular nitrogen and water; however, the production of these reactants have key environmental considerations. Ammonia production typically involves steam reforming of a hydrocarbon feedstock such as natural gas or naphtha. Thus, fossil fuel depletion and the issues surrounding fossil fuel extraction, transportation and processing are all key sustainability concerns. However, ammonia produced from naphtha would be more of a concern than ammonia produced from natural gas due to the additional refining process from which it is produced. Ammonia production also involves the emission of carbon dioxide, a greenhouse gas. Gas preheating also has an impact on energy requirements and thus greenhouse gas emissions. On-site ammonia or urea storage would be required; any leakages of ammonia could prove fatal as it is toxic upon inhalation. Catalyst disposal may also have various environmental impacts depending on the toxicity of the used catalyst. Why is it important to minimise ammonia slip from the SCR process for NOx control? The occurrence of ammonia slip results in inefficient use of feedstock. Costs can be notably reduced by ensuring minimum ammonia slip throughout operation. Ammonia may also react with other compounds to form unwanted products. For example, ammonium bisulphate formation in power industry often results in damage to air heaters. Therefore, this should be further investigated for the application of nitric acid production to ensure any unwanted compounds are not formed. Further to this, as ammonia is toxic, any ammonia slip would result in release to atmosphere; therefore potential health concerns exist. Balancing environmental and economic costs What would be your answer to the above question on the comparison between SCR and NSCR? From table 2, it is evident that SCR can provide an improved NOx removal (exit level of 100 ppm) in comparison to NSCR (205 PPM); however, SCRs failure to remove N2O may be a key concern when compared to NSCR which does remove the compound. However, unlike NSCR, SCR does not result in significant CO2 emissions. The economics of both options demonstrate that when combined with EA, NSCR is significantly more expensive than SCR and only provides an improvement of 0.3 %. Therefore SCR would be chosen over NSCR. Analyse the data shown in Tables 3 and 4 and make your own choice of BAT for NOx prevention and control. Explain and justify your choice. The significant costs of NSCR in comparison to SCR would result in increased nitric acid prices, to the extent where it would not be profitable to manufacture. The small gains in removal efficiency made using NSCR over SCR with EA do not justify the large difference in price; therefore, the choice of BAT is between EA and EA with SCR. With EA adding a cost  £ 230 per tonne of acid, and EA+SCR adding a cost of  £ 880 per tonne of acid, from an economic perspective it would be most suitable to chose EA due to its high NOx removal of 94.8 %. However, the improved removal efficiency of SCR (98.5%) does allow for an argument to be made for its choice as BAT. With regards to cost, EA+SCR does provide increased costs and lower profits; however, its ability to sufficiently meet IPPC targets cannot be overlooked, thus for this reason, it should be chosen as BAT. The social implications of the pollution prevention and control techniques have not been considered above. Can you identify them for each option? Do the social considerations change your choice of BAT? Both EA and EA+SCR share common social implications such as the construction of new plant absorption column for EA, and a reactor for SCR. This involves construction vehicles travelling through the area, resulting in increased noise pollution. Other social impacts of EA are minimal as an increased compression requirement may result in slightly increased noise pollution. If energy is generated on-site for the compressors, then higher greenhouse gas emissions may be a concern. With regards to SCR, ammonia slip is a key concern, as the gas is toxic when inhaled. Further to this, the energy required for gas pre-heating also contributes to increased greenhouse gas emissions. Overall the EA option proves more suitable in terms of reducing social impacts and so this would be the option for BAT. Choosing BAT Why do you think the company has chosen to consider these two options and not any other described above? Choosing to modify the absorption column in order to operate at higher pressures would be a lot cheaper than employing the extend absorption option which would require the construction of an additional column, thus resulting in increased capital and operational costs. In addition to this, this option would be chosen over the NaOH absorption process, again due to the increased capital costs resulting from an additional absorption tower and the increased operational costs incurred from a NaOH feed. Increasing operating pressure does not have any significant on-site environmental releases/impacts other than an increased compression duty. SCR may have been chosen due to its ease to be retrofitted and its high removal efficiency. In comparison to other options, SCR provides the best performance for NOx removal. Choosing BAT: Environmental considerations Consider the LCA results shown in Figure 5 and answer the following questions: Why do you think the SCR option has higher fossil fuel and ozone depletion than the base case? The requirement of natural gas for the production of ammonia is likely to be the primary cause of increased fossil fuel depletion for SCR. NOx formed during ammonia production may also be a cause of the increased ozone depletion associated with SCR. In addition to this, ammonia slip may result in ammonia being released to atmosphere which then reacts with ammonia to produce ammonium nitrate. The fact that SCR is better for some impacts but worse for the others when compared with the base case makes it more difficult to chose BAT. If you as a plant operator had to choose between these two options, which one would you choose? Justify your choice by discussing the significance of global impacts (such as ozone depletion and fossil fuel depletion) and regional and local impacts (such as acidification and photochemical smog). In comparison to the base case, SCR only has a slightly higher fossil fuel and ozone depletion; whereas other impacts such as acidification and human toxicity are significantly reduced through using SCR. As efficiencies are made in the ammonia production process, SCR could potentially have a reduced impact on fossil fuel depletion. In addition to this, the production of ammonia using energy from renewable sources is also an option to reduce fossil fuel depletion, as well as the ability to generate hydrogen from the electrolysis of water using renewable energy. Based purely on environmental considerations, which process out of the three options (base case, HP and SCR) would you choose as BAT? Explain why. Based only on the environmental considerations, HP demonstrates BAT. In comparison to the base case and SCR, HP has the least environmental impact for fossil fuel depletion, global warming, ozone depletion, acidification, photochemical smog, and human toxicity. Compare now the SCR and HP options in terms of the level of NOx emissions that they can achieve. Which process would you as an operator choose? Why? The HP modification has a removal efficiency of 84%, removing 1202 ppm of NOx; however, SCR has a greater removal efficiency of 93%, removing 1332 ppm of NOx. As the base case plant produces 1432 ppm of NOx per hour, the outlet concentrations for the HP and SCR modifications are 230 ppm and 100 ppm, respectively. SCRs effectiveness in removing NOx is notably greater than that of the HP option; therefore, from an operational point of view, SCR would be chosen. Combine both the environmental impacts and the levels of NOx emission that each option can achieve and make an overall choice of BAT. Justify your choice by taking into account the IPPC principles. Both options satisfy the IPPC principles to a certain extent. However, HP has greater compliance than SCR with the IPPC principles. HP and SCR both provide protection for the environment as a whole by reducing NOx emissions from the nitric acid plant. Although, SCR has improved removal efficiency over HP, the impact of ammonia production fails to demonstrate SCR as the BAT in comparison to HP in this case. HP provides a better case for pollution prevention, by reducing NOx formation throughout the process; whereas SCR demonstrates a case for pollution control. As prevention is preferred to control, HP again provides the better option. In providing a balance between the environment, economics and social impacts, HP provides the better option. Significant reductions in global warming potential, acidification and human toxicity are made through employing HP over SCR, with notable gains in reducing fossil fuel depletion, ozone depletion and photochemical smog. Although SCR demonstrates a n improved NOx removal efficiency, overall, the environmental impact as a whole can be reduced by employing HP modifications. Further to this, the income generated by HP modifications, can contribute to further plant modifications leading to improved process efficiencies. Therefore, considering its wider compliance with IPPC principles HP would be chosen as BAT. Choosing BAT: Socio-economic considerations Choose your preferred NOx prevention or control option considering the internal (MAC) and external costs (MDC) shown Tables 6 and 7. Justify your choice. With regards to the marginal abatement costs (MAC) for NOx emissions, the HP option clearly proves to be the more attractive option due to the savings made ( MAC =  £ -92 per ppm). The surplus energy generated and increase in acid produced leads to improved revenue which consequently reduces the operating cost of the plant. However, SCR increases operating cost by  £ 225 per ppm of NOx removed. In order to asses if SCRs improved removal efficiency can justify such a cost, the marginal damage cost of both options was compared. The results indicate that MDC due to NOx emissions was lower for SCR ( £ 35,770 per year) than for HP ( £ 82,320 per year). However, the MDC fails to consider environmental impacts other than NOx emissions. If costs were considered for the impacts of ammonia production, it is likely that the MDC for SCR would be much higher. Considering this, HP was chosen as the best option. Choosing BAT: The whole picture List all criteria relevant for choosing BAT in the above case study. On the basis of the results obtained, rank the three options in order of their desirability. You may wish to create a ranking table, assigning a number to each technology to indicate the order of preference on a scale from 1-3 (e.g. number 1 indicates the best option and 3 the worst); this ranking should be done for each criterion you have listed. NOx removal efficiency/Marginal Damage Costs SCR HP Base Case Marginal Abatement Costs HP Base Case SCR Life-Cycle Environmental Impacts HP SCR Base Case Compliance with IPPC Principles HP SCR Base Case Identify BAT for the conditions of this case study, assuming that you are Head of Engineering and Technology Division in a company. Justify your choice. Based on the criteria listed in question 1, HP demonstrates the most suitable option for IPPC compliance, reducing overall environmental impacts as well as providing savings in operating costs. Although SCR has a greater NOx removal efficiency, HP is consistently and in some cases significantly better than SCR in reducing environmental impacts such as fossil fuel depletion, global warming, ozone depletion, acidification, photochemical smog, and human toxicity. In addition to this, choosing HP not only reduces the plants environmental impact, but allows for improved energy generation onsite. Therefore, gains in efficiency can be made, reducing reliance on volatile energy prices. The HP option does not require additional feedstock, unlike SCRs ammonia requirement, and is therefore not as directly exposed to price fluctuations. Thus, the option of HP modification is econo