Examine the factors affecting the domestic division of labour among couples Essay

The Division of Labour refers to the range of tasks within a social system. This can vary from everyone doing the same thing to each person having a specialised role. The division of domestic labour is the tasks given to each person in a house unit. For example the wife may do the housework, whilst the husband goes out to work. The division of domestic labour can also include childcare and emotion work, two things that previously were completely down to the wife but now are becoming more evenly spread between family members. Cultural factors that affect the division of labour are aspects like lagged adaptation. Jonathan Gershuny said wives who are in paid work do less housework (men do 27%), but the tasks are still sex-typed: men focus on DIY where as women cook. His explanation was there are gradual changes in values- known as lagged adaptation, and that over time parental role models will show children that men do housework too. Different ethnicities have different family structures- in many American families especially, the man is still the breadwinner and head of the household, while the wife cooks, cleans, and bears and raises children. Conjugal (marital) roles will vary depending on culture, if the society around a family typically has the man working then spending his leisure time with colleagues, that’s how that family will function because they are socialised that way. Some legal factors influence the division of labour, for instance it’s now easier and more socially acceptable for couples to get a divorce, so in a way there’s more pressure on men to keep things civil in the household. If the wife is unhappy, she can just leave. On the other hand, men and women don’t always have equal pay, which affects the division of labour as a popular belief in families is that the highest earner should do the least domestic work. Economic factors have had a significant impact on the division of labour,  ¾ of married/cohabiting women in the UK make money, which has resulted in ‘The New Man’. This is the idea that since women are bringing in an income, men are more willing to do domestic work. Rosemary Crompton pointed out that men do more in the home when the woman’s economical power increases (though the DOL is still unequal). However, women only earn  ¾ of what men earn, so men can never do quite as much housework based on their wives income. Feminists on the other hand feel that instead of a change in men, all that has altered is that women now bear a dual burden; this is the combination of paid work and domestic work. They believe modern men are benefiting from their wives’ financial income on top of them doing the housework and looking after the children. Lydia Morris found that even when the male partner is unemployed, the woman still does the domestic work as the male suffers a crisis of masculinity, so they refuse to demean themselves with housework. Women’s working hasn’t impacted on the division of childcare either; fewer than 4% of men were deemed the main child-carer in 1996. Additionally, Hochschild defined the concept of emotion work as a job where you manage someone’s emotions (for example an air stewardess). Feminists say women are working, looking after children/domestic labour, and are emotionally supporting the family. Jean Dunscombe and Dennis Marsden call this a triple shift (emotion work + domestic labour + paid work). So, in reality, the division of labour hasn’t changed through economic factors as much as perhaps it should have done. Many technological advances have made domestic labour easier, including effective contraception (the pill, implant and condom) as modern families are often smaller than in previous years. Most births are planned, and so the household is well prepared for the extra work. In addition, labour saving devices, like the Hoover and dish washer have resulted in men being more likely to help with housework as it’s now less time consuming and strenuous. Social factors that have influenced the division of labour include the lack of stigma attached to cohabiting couples; consequently they feel no pressure to get married. This could mean that gender roles aren’t as strictly enforced. Another important consideration is that in recent years, religion has become a less prominent aspect of life, a lot of families now won’t be religious at all and therefore don’t feel the need to treat each other a certain way as dictated by religion. Most social interaction of the current day can be traced back to religious codes of conduct, it’s possible than non-Christian societies expect wives to be treated differently to Christian ones. Theoretical perspectives such as functionalism and the new right support the division of labour. They state that families need segregated conjugal roles because it’s biological instinct and that it benefits everyone, they feel these marital roles help to organise the family. One functionalist, Talcott Parsons believed that males should take on an instrumental role; they should work and will be the ones to achieve success, while females should assume the expressive role (looking after the children, and catering for the emotional needs of the family). A popular view in right-wing politics, functionalism and the new right is that couples shouldn’t be equal, as the male should be the head of the family, while retaining the role of breadwinner. March of Progress sociologists (like Elizabeth Bott, Young and Willmott) argue the family is becoming more symmetrical with joint conjugal roles. These joint roles have become typical of working class life, in Young and Willmott’s opinions. Feminists like Ann Oakley disagree and say that segregated conjugal roles are socially constructed by men to benefit men as we still live in a patriarchal society. Her research found that men only have to do a small fraction of the domestic work for the household to qualify as symmetrical. This shows that although the UK advertises itself as a modern society, sexist views of the past are a frequent occurrence in our families. (A.N: This was marked by my AS-level Sociology teacher and was given 18/24 marks, making it a Grade C essay. Some tips she gave- Use AO2 phrases to show evaluation, and cite evidence to support perspectives. It is written in UK English. Apologies for any spelling errors and incorrect Sociologist names.)

Ethnography on People Who Do Hot Yoga

Yogis For many people with hectic, stressful lives, relaxation means zoning out in front of the TV at the end of the day or getting some extra sleep at the end of the weekend, but for a certain group of people relaxing does not include this. These people are called yogis; those who achieve relaxation through the art of meditation, breathing, stretching, and finding inner peace. In today’s fast paced society it is hard to find a way to fully relax because people are constantly being forced to push their minds and bodies to the limit, which can result in high levels of stress.Rather than fighting against life’s hardships, people who practice yoga value deep relaxation in order to be free of stress and live each day in peace and harmony without being thrown out of balance by the ups and downs life may bring. As a college student living in today’s fast-paced society life’s obstacles frequently challenge me, which usually leads to great amounts of stress. Watch ing TV, sleeping, and working out are all ways to help me cope, but these activities never seem to fully get the job done. I never thought that this horrible sequence of stress would find and ending, until I experienced my first hot yoga class.I decided to do my ethnography on the subculture of yogis to find out how these people step out of society’s craziness and enter into a world of relaxation by connecting their bodies and minds. Lucky for me, one of my close friends, Jamie Mack, is someone who takes immense pride in yoga. I was able to talk to her about how yoga helps her free her stress and also get a first hand experience of a yoga session myself. It was like any other Sunday here in Lawrence; I woke up around 12:30 PM exhausted from the night before, and automatically thought of all the homework I had to complete.One of the assignments I needed to get done by the end of the day was going to observe my subculture for my ethnography essay. In the interview I conducted w ith my friend Jamie, she explained to me, â€Å"Yoga I s the best remedy for stress. A part of the practice in yoga is clearing your mind, and it is a great stress relief. † (Jamie Mack, interview) Like other yogi’s, Jamie practices yoga in order to be free from stress, and that was exactly what I needed. What could be a better day to relieve my stress than a Sunday? So, I picked up my phone to call Jamie and find out the name and directions to the place where she practices her yoga.She told me that the yoga place was named â€Å"Bikram Yoga†, which is another name for hot yoga. She also told me that I should arrive to the class about fifteen minutes before the session started in order to stretch and relax my mind. Yogis feel that it is key to relax their minds before a session begins because it helps them later when they are trying to achieve their inner peace. At 2:30 PM, my friend Caroline and I left our dorm to go see what this whole â€Å"yoga† thing was about. We arrived at Bikram Yoga fifteen minutes before three just like Jamie told us, and saw that it was a small little place pushed into the corner of the shopping strip.Caroline and I ran out of the car, and into the studio. We got in there and were automatically welcomed with big smiles and greetings from the two women standing behind a desk in the little room. One of the women asked us if we had ever been there before or if we had ever done a hot yoga class, but it was quite obvious that it was our first time since we both showed up with no mats or towels and everyone else who walked in seemed to have both of these items with them. When we explained to her that it was our first time, she introduced herself as Kimbo and handed us two forms to read and fill out.One of the forms was asking who recommended us to Bikram Yoga, and the other was asking us to initial statements that proved we would be respectful throughout the session by not talking and not bringing in our cell p hones, which are both actions that would interrupt the peace. The reason that we weren’t allowed to talk and bring our cell phones in is because yogis believe that one must forget about what is going on in the world outside of the room they are practicing and relaxing in. Also, the use of cell phones is a big contributor to high levels of stress in people. In an article, â€Å" Stress of Cell Phone Use Disturbs Sleep, Mood,† Dr.Z writes about the effects of cell phone usage and how it increases people’s stress. He explains, â€Å"A major prospective study over a period of one year of young adults who used their cell phones frequently reveals significant disturbances to sleep patterns, increased stress symptoms, and an increased incidence of clinical depression. † (Dr. Z) A cell phone is something that pushes people to use their minds and can cause a lot of problems. People who do yoga don’t want this fast-paced society to get to their heads, so the y choose to exclude anything that will stop them from achieving peace and relaxation.We sat down on a colorful little bench to fill out our forms, and we both agreed to be respectful during the session. While Caroline was still filling out her forms I took a look around the entrance room. There were a lot of peace signs, Buddha’s, and flowers, which made the scenery calm and peaceful. These types of decorations are all a part of achieving inner peace. Peace signs stand for peace, Buddha’s are looking to achieve peace, and flowers are always peaceful and welcoming.Yogis value peace because they are people who are always striving for harmony and balance to reach inner peace. When we were finished paying her for the session, we were given a mat and a towel so that we could properly participate. People who do hot yoga value their mats and their towels because these are two things that serve as artifacts that the value as a subculture. Without the mats their feet would slip al over the place since the heat makes their feet sweat and it would make it a lot harder for one to reach a level of relaxation that will help relieve stress.The towel is necessary to have by their sides at all times in case they need to wipe their faces off when their sweat gets out of control. As we walked down the narrow hallway to the room Kimbo had directed us to go to we heard he shout, â€Å"don’t forget to leave your shoes, coats, and any other belongings outside of the room. Oh and go in with as little clothing as you feel comfortable in. † I looked at Caroline and we both didn’t understand what she meant by that. As little clothing as possible? But why?We knew it was going be hot in the room since it was called â€Å"hot yoga†, but I guess we just didn’t understand exactly how hot this room was about to get. We opened the door to the room, and right away I thought I was going to pass out from the smell of dirty gym socks and sweat that circulated around it. The room was bright orange. Not the kind of orange that would make me sick looking at it for the ninety minutes I was going to be in there for, but the kind of orange that made me feel like I should be lying out in a tropical island.A very relaxing room besides the smell, but no one else seemed to care about it so I just chose to ignore it. The people didn’t care about the smell because they were there for one reason and one reason only; to relax their minds and become free from any stress they were having. It didn’t matter to them that this building was small and ugly, or that the room was hot and smelly because when they go there they are doing something that most people don’t, and that is not letting society’s fast-pace get to their heads. There were so many people in his small room. There were both men and women, tall, short, skinny, fat, eighteen or sixty with just one thing in common besides the fact that they all love yoga; th ey were all wearing very minimal clothing. Caroline and I were the two with the most clothing on and all we were wearing was spandex shorts and tank tops. This was a place where no one was judged on what their body looked like and every single person was respected for why they were there, not what they looked like. Everyone was talking to each other as if they had known each other for a while.Caroline and I placed our mats down close to the door we had walked through and the looks we received were nothing but nice. This made us feel welcome in a place where we knew no one. I loved it there already, and couldn’t wait for the instructor to come in, and for the session to start. After about ten minutes of waiting for the instructor she had finally arrived. It turned out that Kimbo, the nice lady from the front desk, was the instructor for that day’s hot yoga session. She opened up the door to the room and shouted, â€Å"hello my lovely people! I was amazed by the spirit this woman had running through her because it gave off a positive vibe. It is important to stay positive throughout a yoga session because people who do yoga feel that the positive energy is another way to relieve stress and bring harmony. Everyone in the room turned towards the front and smiled back to her as she walked up there to lead the class. Caroline and I just followed everyone else’s lead by also turning to the front. Kimbo started off by asking Caroline and I to move to different spots of the room so that we would be surrounded by people knew what they were doing.We moved our things and ended up on opposite sides of the room. My new neighbors all introduced themselves and smiled to me. Their positive attitudes towards me made it clear that they wanted me to succeed in my first session. These people are all very caring and would be happy for anyone who gives yoga a chance. They are a rather inclusive group of people as the want everyone to experience the goodness of letting not letting stress get to the head. Kimbo raised her arms high up in the first position, and everyone knew to stand up; the session had started.We began by reaching up for the sky, exhaling and inhaling deep breathes. These are the breathing routines that start off each session to get the body relaxed and ready to start. It is crucial in yoga that one keeps breathing and knows how to control their breathe because it is key to connecting the body to the mind, which results in high relaxation. I was now ready to go, and so was everyone else in the room. There were many positions that we covered, and for each one there were two sets which helped because I was able to watch the experienced yogis do the first one and then join in on the second set.From the book written by the creator of Bikram Yoga, Bikram Choudhury write, â€Å"Through the practice of yoga, you integrate your body and mind in a perfect union. † (Bikram, 32) He created these specific positions so that peop le who practice yoga will use their bodies as a way to connect to their inner self. These positions we were doing required a lot of flexibility. In my interview with Jamie, I asked if this yoga class required flexibility, and she responded by telling me, â€Å"You don’t have to be anything to do yoga, you just have to be willing to try it. I didn’t quite agree with her statement because I thought that the positions would be very hard to do if one isn’t flexible enough. What I came to find out was that even though these positions required flexibility, it was something that one would have to work on. In yoga you aren’t pushed to the limit like you are in our fast-paced society, rather you are told to preform everything to your own comfort zone, and that helps people who do yoga free their stress.As we would reach our arms up high, Kimbo would peacefully repeat, â€Å"You are a flower blossoming in the midst of a beautiful summer,† which kept everyon e happy and in the mind state of peace. As I mentioned before, positivity is key in yoga. These words that Kimbo kept repeating kept the positive energy flowing throughout the room. This kind of language is what gives yogis the strength to balance out their down sides in life. The heat in the room was getting higher and higher, and I wasn’t sure if my body could handle it.I plopped down on my mat to take a quick breather, ripped off my tank top, and joined the rest of the women in the class who were wearing only a sports bra and spandex shorts. The scorching heat made it clear to me why people weren’t wearing a lot of clothes in the beginning of the session, and it seemed to me as if sweating was the main goal of this class. I looked around the room and noticed that everyone else was also dripping sweat. There were times where I would look around the room and see people raising their arms for a position, and sweat would drip down from them just like a shower head drips water after you turn it off.Every time I would sit down on my mat to take a break and wipe off my sweat, Kimbo would look at me, smile, and say, â€Å"You’re doing great! † She was one of the greatest motivators I had ever met because she did it in such a peaceful manner. Though my face was beat red, my eyes were basically tearing from the heat, and I thought I was going to faint, her positive attitude is what kept me going and even though I wanted to bee-line straight out that of that door, she gave me the strength to stay and finish the session.It was finally 4:45 and though it had felt like I had been in that room for hours, it had only been for ninety minutes. Kimbo turned off the lights and told us to lay straight on our backs with our eyes closed. Two minutes later she left the room and said, â€Å"Namaste,† and everyone replied back in unison, â€Å"Namaste. † Unaware of what this word meant, I just decided to go along with it, but didn’t s ay anything. In an article titled â€Å"The Meaning of Namaste† Aadil Palkhivala writes about and explains the deeper meaning of the gesture Namaste.He let his readers know that, â€Å"Usually, it is done at the end of class because the mind is less active and the energy in the room is more peaceful. The teacher initiates Namaste as a symbol of gratitude and respect toward her students and her own teachers and in return invites the students to connect with their lineage, thereby allowing the truth to flow—the truth that we are all one when we live from the heart. † (Palkhivala) Basically, this gesture ends the session and creates the final connection of peace to the mind while the mind is fully relaxed.While everyone was still lying there, I immediately sprinted out of the room to grasp a breathe of any kind of air besides the air in that room. Never in my life has room temperature air felt so good, and I was able to breathe normally again. As I waited for Carol ine to come out of the room many people who had just left the session approached me, telling me that I did a great job for my first time and that I should definitely consider coming back because yoga is one of the best things that has ever happened to them.These people enjoy yoga because they are able to step away from their hectic lives, and go into a place where they can fully relax their minds and not think about anything that would be getting was one of the most challenging, yet relaxing and peaceful activities I have ever experienced. In my interview with Jamie I asked her what one could expect in a typical yoga class. She told me, â€Å"Expect to sweat, but mostly expect to doubt yourself during the session and to feel absolutely incredible once your done. (Jamie Mack, interview) It turned out that she was exactly correct. In a short period of time I was able to achieve inner peace and full relaxation by doing yoga and trying to connect my mind and body. All of the stress tha t I had when I woke up earlier that morning had quickly vanished as I felt like I was on top of the world. Homework usually brings me down and puts me under a great amount of stress, but the yoga class took that negativity away. At that point I was living stress free, just like a yogi.People who practice yoga live life to the fullest while not letting their negative stress get to their heads. Most people in this fast-paced modern world we live in would appreciate time to fully relax their minds and bodies that are constantly being pushed to exceed their limits, the only problem is they don’t know what the real meaning of relaxation is. Yogis understand the concept of relaxation and value it as they strive everyday to be free of stress to live life in harmony. Works Cited: Choudhury, Bikram.Bikram Yoga: The Guru behind Hot Yoga Shows the Way to Radiant Health and Personal Fulfillment. New York: Collins, 2007. Print. â€Å"Stress of Cell Phone Use Disturbs Sleep, Mood. † Stresshacker. Web. 09 May 2012. . â€Å"The Meaning of â€Å"Namaste†Ã¢â‚¬  The Meaning of Namaste. Web. 09 May 2012. . â€Å"Why Practice Yoga? † Why Practice Yoga? Web. 09 May 2012. .

Exercise 7 Respiratory System Mechanics

EXERCISE 7 Respiratory System Mechanics O B J E C T I V E S 1. To explain how the respiratory and circulatory systems work together to enable gas exchange among the lungs, blood, and body tissues 2. To define respiration, ventilation, alveoli, diaphragm, inspiration, expiration, and partial pressure 3. To explain the differences between tidal volume, inspiratory reserve volume, expiratory reserve volume, vital capacity, residual volume, total lung capacity, forced vital capacity, forced expiratory volume, and minute respiratory volume 4. To list various factors that affect respiration 5. To explain how surfactant works in the lungs to promote respiration 6. To explain what happens in pneumothorax 7. To explain how hyperventilation, rebreathing, and breathholding affect respiratory volumes T he physiological functions of respiration and circulation are essential to life. If problems develop in other physiological systems, we can still survive for some time without addressing them. But if a persistent problem develops within the respiratory or circulatory systems, death can ensue within minutes. The primary role of the respiratory system is to distribute oxygen to, and remove carbon dioxide from, the cells of the body. The respiratory system works hand in hand with the circulatory system to achieve this. The term respiration includes breathing—the movement of air in and out of the lungs, also known as ventilation—as well as the transport (via blood) of oxygen and carbon dioxide between the lungs and body tissues. The heart pumps deoxygenated blood to pulmonary capillaries, where gas exchange occurs between blood and alveoli (air sacs in the lungs), oxygenating the blood. The heart then pumps the oxygenated blood to body tissues, where oxygen is used for cell metabolism. At the same time, carbon dioxide (a waste product of metabolism) from body tissues diffuses into the blood. The deoxygenated blood then returns to the heart, completing the circuit. Ventilation is the result of muscle contraction. The diaphragm—a domeshaped muscle that divides the thoracic and abdominal cavities—contracts, making the thoracic cavity larger. This reduces the pressure within the thoracic cavity, allowing atmospheric gas to enter the lungs (a process called inspiration). When the diaphragm relaxes, the pressure within the thoracic cavity increases, forcing air out of the lungs (a process called expiration). Inspiration is considered an â€Å"active† process because muscle contraction requires the use of ATP, whereas expiration is usually considered a â€Å"passive† process. When a person is running, however, the external intercostal muscles contract and make the thoracic cavity even larger than with diaphragm contraction alone, and expiration is the result of the internal intercostal muscles contracting. In this case, both inspiration and expiration are considered â€Å"active† processes, since muscle contraction is needed for both. Intercostal muscle contraction works in conjunction with diaphragm muscle contraction. 87 88 Exercise 7 (a) Atmospheric pressure Parietal pleura Thoracic wall Visceral pleura Pleural cavity Transpulmonary pressure 760 mm Hg 756 mm Hg 4 mm Hg 756 760 Intrapleural pressure 756 mm Hg ( 4 mm Hg) Lung Diaphragm Intrapulmonary pressure 760 mm Hg (0 mm Hg) (b) F I G U R E 7 . 1 Respiratory volumes. a) Opening screen of the Respiratory Volumes experiment. (b) Intrapulmonary and intrapleural relationships Respiratory System Mechanics 89 Respiratory Volumes Ventilation is measured as the frequency of breathing multiplied by the volume of each breath, called the tidal volume. Ventilation is needed to maintain oxygen in arterial blood and carbon dioxide in venous blood at their normal levels—that is, at their normal partial pressures. [The term partial pressure refers to the proportion of pressure that a single gas exerts within a mixture. For example, in the atmosphere at sea level, the pressure is 760 mm Hg. Oxygen makes up about 20% of the total atmosphere and therefore has a partial pressure (PO2 ) of 760 mm Hg 20%, close to 160 mm Hg. ] Oxygen diffuses down its partial pressure gradient to flow from the alveoli of the lungs into the blood, where the oxygen attaches to hemoglobin (meanwhile, carbon dioxide diffuses from the blood to the alveoli). The oxygenated blood is then transported to body tissues, where oxygen again diffuses down its partial pressure gradient to leave the blood and enter the tissues. Carbon dioxide (produced by the metabolic reactions of the tissues) diffuses down its partial pressure gradient to flow from the tissues into the blood for transport back to the lungs. Once in the lungs, the carbon dioxide follows its partial pressure gradient to leave the blood and enter the air in the alveoli for export from the body. Normal tidal volume in humans is about 500 milliliters. If one were to breathe in a volume of air equal to the tidal volume and then continue to breathe in as much air as possible, that amount of air (above and beyond the tidal volume) would equal about 3100 milliliters. This amount of air is called the inspiratory reserve volume. If one were to breathe out as much air as possible beyond the normal tidal volume, that amount of air (above and beyond the tidal volume) would equal about 1200 milliliters. This amount of air is called the expiratory reserve volume. Tidal volume, inspiratory reserve volume, and expiratory reserve volume together constitute the vital capacity, about 4800 milliliters. It is important to note that the histological structure of the respiratory tree (where air is found in the lungs) will not allow all air to be breathed out of the lungs. The air remaining in the lungs after a complete exhalation is called the residual volume, normally about 1200 milliliters. Therefore, the total lung capacity (the vital capacity volume plus the residual volume) is approximately 6000 milliliters. All of these volumes (except residual volume) can be easily measured using a spirometer. Basically, a spirometer is composed of an inverted bell in a water tank. A breathing tube is connected to the bell’s interior. On the exterior of the inverted bell is attached a pen device that records respiratory volumes on paper. When one exhales into the breathing tube, the bell goes up and down with exhalation. Everything is calibrated so that respiratory volumes can be read directly from the paper record. The paper moves at a pre-set speed past the recording pen so that volumes per unit time can be easily calculated. In addition to measuring the respiratory volumes introduced so far, the spirometer can also be used to perform pulmonary function tests. One such test is the forced vital capacity (FVC), or the amount of air that can be expelled completely and as rapidly as possible after taking in the deepest possible breath. Another test is the forced expiratory volume (FEV1), which is the percentage of vital capacity that is exhaled during a 1-sec period of the FVC test. This value is generally 75% to 85% of the vital capacity. In the following experiments you will be simulating spirometry and measuring each of these respiratory volumes using a pair of mechanical lungs. Follow the instructions in the Getting Started section at the front of this lab manual to start up PhysioEx. From the drop-down menu, select Exercise 7: Respiratory System Mechanics and click GO. Before you perform the activities watch the Water-Filled Spirometer video to see the experiment performed with a human subject. Then click Respiratory Volumes. You will see the opening screen for the â€Å"Respiratory Volumes† experiment (Figure 7. 1). At the left is a large vessel (simulating the thoracic cavity) containing an air flow tube. This tube looks like an upside-down â€Å"Y. † At the ends of the â€Å"Y† are two spherical containers, simulating the lungs, into which air will flow. On top of the vessel are controls for adjusting the radius of the tube feeding the â€Å"lungs. This tube simulates the trachea and other air passageways into the lungs. Beneath the â€Å"lungs† is a black platform simulating the diaphragm. The â€Å"diaphragm† will move down, simulating contraction and increasing the volume of the â€Å"thoracic cavity† to bring air into the â€Å"lungs†; it will then move up, simulating relaxation and decreasin g the volume of the â€Å"thoracic cavity† to expel air out. At the bottom of the vessel are three buttons: a Start button, an ERV (expiratory reserve volume) button, and an FVC (forced vital capacity) button. Clicking Start will start the simulated lungs breathing at normal tidal volume; clicking ERV will simulate forced exhalation utilizing the contraction of the internal intercostal muscles and abdominal wall muscles; and clicking FVC will cause the lungs to expel the most air possible after taking the deepest possible inhalation. At the top right is an oscilloscope monitor, which will graphically display the respiratory volumes. Note that the Yaxis displays liters instead of milliliters. The X-axis displays elapsed time, with the length of the full monitor displaying 60 seconds. Below the monitor is a series of data displays. A data recording box runs along the bottom length of the screen. Clicking Record Data after an experimental run will record your data for that run on the screen. A C T I V I T Y 1 Trial Run Let’s conduct a trial run to get familiarized with the equipment. 1. Click the Start button (notice that it immediately turns into a Stop button). Watch the trace on the oscilloscope monitor, which currently displays normal tidal volume. Watch the simulated diaphragm rise and fall, and notice the â€Å"lungs† growing larger during inhalation and smaller during exhalation. The Flow display on top of the vessel tells you the amount of air (in liters) being moved in and out of the lungs with each breath. 2. When the trace reaches the right side of the oscilloscope monitor, click the Stop button and then click Record Data. Your data will appear in the data recording box along the bottom of the screen. This line of data tells you a wealth of information about respiratory mechanics. Reading the data from left to right, the first data field should be that of the Radius of the air flow tube (5. 00 mm). The next data field, Flow, displays the total flow volume for this experimental run. T. V. stands for â€Å"Tidal Volume†; E. R. V. for â€Å"Expiratory 90 Exercise 7 Reserve Volume†; I. R. V. for â€Å"Inspiratory Reserve Volume†; R. V. for â€Å"Residual Volume†; V. C. for â€Å"Vital Capacity†; FEV1 for â€Å"Forced Expiratory Volume†; T. L. C. for â€Å"Total Lung Capacity†; and finally, Pump Rate for the number of breaths per minute. 3. You may print your data at any time by clicking Tools at the top of the screen and then Print Data. You may also print the trace on the oscilloscope monitor by clicking Tools and then Print Graph. 4. Highlight the line of data you just recorded by clicking it and then click Delete Line. . Click Clear Tracings at the bottom right of the oscilloscope monitor. You are now ready to begin the first experiment.  ¦ A C T I V I T Y 2 6. Click Clear Tracings before proceeding to the next activity. Do not delete your recorded data—you will need it for the next activity.  ¦ A C T I V I T Y 3 Effect of Restricted Air Flow on Respiratory Volumes 1. Adjust the radius of the air flow tube to 4. 00 mm by clicking the ( ) button next to the radius display. Repeat steps 2–5 from the previous activity, making sure to click Record Data. How does this set of data compare to the data you recorded for Activity 2? The breathing isn't as strong ________________________________________________ the flow and tidal volume have decreased ________________________________________________ Is the respiratory system functioning better or worse than it did in the previous activity? Explain why. functioning worse, it isn't moving as much air or expanding ________________________________________________ the lungs as far because of the decreased space for intake ________________________________________________ and output of air 2. Click Clear Tracings. 3. Reduce the radius of the air flow tube by another 0. 0 mm to 3. 50 mm. 4. Repeat steps 2–6 from Activity 2. 5. Reduce the radius of the air flow tube by another 0. 50 mm to 3. 00 mm. 6. Repeat steps 2–6 from Activity 2. What was the effect of reducing the radius of the air flow tube on respiratory volumes? furthur decrease of flow and tidal volume ________________________________________________ ________________________________________________ What does the air flow tube simulate in the human body? trachea ________________________________________________ ________________________________________________ Measuring Normal Respiratory Volumes 1. Make sure that the radius of the air flow tube is at 5. 00 mm. To adjust the radius, click the ( ) or ( ) buttons next to the radius display. 2. Click the Start button. Watch the oscilloscope monitor. When the trace reaches the 10-second mark on the monitor, click the ERV button to obtain the expiratory reserve volume. 3. When the trace reaches the 30-second mark on the monitor, click the FVC to obtain the forced vital capacity. 4. Once the trace reaches the end of the screen, click the Stop button, then click Record Data. . Remember, you may print your trace or your recorded data by clicking Tools at the top of the screen and selecting either Print Graph or Print Data. From your recorded data, you can calculate the minute respiratory volume: the amount of air that passes in and out of the lungs in 1 minute. The formula for calculating minute respiratory volume is: Minute respiratory volume tidal volume bpm (breaths per minute) Calculate and en ter the minute respiratory volume: _7,500________ Judging from the trace you generated, inspiration took place over how many seconds? __2 seconds_____________ Expiration took place over how many seconds? What could be some possible causes of reduction in air flow to the lungs? obstruction, inflammation from illness or allergic ________________________________________________ reaction ________________________________________________ ________________________________________________ 7. Click Tools > Print Data to print your data. _____2 seconds____________ Does the duration of inspiration or expiration vary during yes ERV or FVC? _____ Respiratory System Mechanics 91 FIGURE 7. 2 Opening screen of the Factors Affecting Respiration experiment. Express your FEV1 data as a percentage of vital capacity by filling out the following chart. (That is, take the FEV1 value and divide it into the vital capacity value for each line of data. ) Factors Affecting Respiration Many factors affect respiration. Compliance, or the ability of the chest wall or lung to distend, is one. If the chest wall or lungs cannot distend, respiratory ability will be compromised. Surfactant, a lipid material secreted into the alveolar fluid, is another. Surfactant acts to decrease the surface tension of water in the fluid that lines the walls of the alveoli. Without surfactant, the surface tension of water would cause alveoli to collapse after each breath. A third factor affecting respiration is any injury to the thoracic wall that results in the wall being punctured. Such a puncture would effectively raise the intrathoracic pressure to that of atmospheric pressure, preventing diaphragm contraction from decreasing intrathoracic pressure and, consequently, preventing air from being drawn into the lungs. Recall that airflow is achieved by the generation of a pressure difference between atmospheric pressure on the outside of the thoracic cavity and intrathoracic pressure on the inside. ) We will be investigating the effect of surfactant in the next activity. Click Experiment at the top of the screen and then select Factors Affecting Respiration. The opening screen will look like Figure 7. 2. Notice the changes to the FEV1 as % of Vital Capacity Radius FEV1 Vital Capacity FEV1 (%) 5. 00 4. 00 3. 50 3. 00 3541 1422 822 436 4791 1962 1150 621 1. 35% 1. 37% 1. 39% 1. 42%  ¦ 92 Exercise 7 quipment above the air flow tube. Clicking the Surfactant button will add a pre-set amount of surfactant to the â€Å"lungs. † Clicking Flush will clear the lungs of surfactant. Also notice that valves have been added to the sides of each simulated lung. Opening the valves will allow atmospheric pressure into the vessel (the â€Å"thoracic cavity†). Finally, notice the changes to the display windows below the oscilloscope screen. Flow Left and Pressure Left refer to the flow of air and pressure in the left â€Å"lung†; Flow Right and Pressure Right refer to the flow of air and pressure in the right â€Å"lung. Total Flow is the sum of Flow Left and Flow Right. A C T I V I T Y 4 3. Click Flush to remove the surfactant from the previous activity. 4. Be sure that the air flow radius is set at 5. 00 mm, and that P ump Rate is set at 15 strokes/minute. 5. Click on Start and allow the trace to sweep the length of the oscilloscope monitor. Notice the pressure displays, and how they alternate between positive and negative values. 6. Click Record Data. Again, this is your baseline data. 7. Now click the valve for the left lung, which currently reads â€Å"Valve closed. † 8. . Click Start and allow the trace to sweep the length of the Click Record Data. oscilloscope monitor. Effect of Surfactant on Respiratory Volumes 1. The data recording box at the bottom of the screen should be clear of data. If not, click Clear Table. 2. The radius of the air flow tube should be set at 5. 00 mm, and the Pump Rate should be set at 15 strokes/minute. 3. Click Start and allow the trace to sweep across the full length of the oscilloscope monitor. Then click Record Data. This will serve as the baseline, or control, for your experimental runs. You may wish to click Tools and then Print Graph for a printout of your trace. 4. Click Surfactant twice to add surfactant to the system. Repeat step 3. When surfactant is added, what happens to the tidal volume? It increases the amount of air being inhaled ________________________________________________ As a result of the tidal volume change, what happens to the flow into each lung and total air flow? ________________________________________________ they all increase Why does this happen? urfactant decreases teh surface tension of water in the ________________________________________________ fluid that lines the walls of the alveoli ________________________________________________ Remember, you may click Tools and then either Print Data or Print Graphs to print your results.  ¦ A C T I V I T Y 5 What happened to the left lung when you clicked on the valve button? Why? The lung deflated due to the change in the intrapleural ________________________________________________ pressure ________________________________________________ ________________________________________________ What has happened to the â€Å"Total Flow† rate? t reduced ________________________________________________ by half 0 What is the pressure in the left lung? ___________________ no Has the pressure in the right lung been affected? _________ If there was nothing separating the left lung from the right lung, what would have happened when you opened the valve for the left lung? Why? Both lungs would have collapsed due to pressure ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ Now click the valve for the left lung again, closing it. What happens? Why? nothing , there is excess air remaining in the lung ________________________________________________ ________________________________________________ Click Reset (next to the Flush button at the top of the air flow tube). What happened? the lung reinflated ________________________________________________ Describe the relationship required between intrathoracic pressure and atmospheric pressure in order to draw air into the lungs. intrathroacic pressure must be greater or lower than ________________________________________________ atmospheric pressure to draw air in and out of the lungs _______________________________________________ Effect of Thoracic Cavity Puncture Recall that if the wall of the thoracic cavity is punctured, the intrathoracic pressure will equalize with atmospheric pressure so that the lung cannot be inflated. This condition is known as pneumothorax, which we will investigate in this next activity. 1. Do not delete your data from the previous act ivity. 2. If there are any tracings on the oscilloscope monitor, click Clear Tracings. Respiratory System Mechanics 93 FIGURE 7. 3 Opening screen of the Variations in Breathing experiment. Design your own experiment for testing the effect of opening the valve of the right lung. Was there any difference from the effect of opening the valve of the left lung? no ________________________________________________ Remember, you may click Tools and then either Print Data or Print Graphs to print your results.  ¦ Variations in Breathing Normally, alveolar ventilation keeps pace with the needs of body tissues. The adequacy of alveolar ventilation is measured in terms of the partial pressure of carbon dioxide (PCO2). Carbon dioxide is the major component for regulating breathing rate. Ventilation (the frequency of breathing multiplied by the tidal volume) maintains the normal partial pressures of oxygen and carbon dioxide both in the lungs and blood. Perfusion, the pulmonary blood flow, is matched to ventilation. The breathing patterns of an individual are tightly regulated by the breathing centers of the brain so that the respiratory and circulatory systems can work together effectively. In the next activity you will examine the effects of rapid breathing, rebreathing, and breathholding on the levels of carbon dioxide in the blood. Rapid breathing increases breathing rate and alveolar ventilation becomes excessive for tissue needs. It results in a decrease in the ratio of carbon dioxide production to alveolar ventilation. Basically, alveolar ventilation becomes too great for the amount of carbon dioxide being produced. In rebreathing, air is taken in that was just expired, so the PCO2 (the partial pressure of carbon dioxide) in the alveolus (and subsequently in the blood) is elevated. In breathholding, there is no ventilation and no gas exchange between the alveolus and the blood. Click Experiment at the top of the screen and select Variations in Breathing. You will see the next screen, shown in Figure 7. 3. This screen is very similar to the ones you have been working on. Notice the buttons for Rapid Breathing, Rebreathing, Breath Holding, and Normal Breathing—clicking each of these buttons will induce the given pattern of breathing. Also note the displays for PCO2, Maximum PCO2, Minimum PCO2, and Pump Rate. 94 Exercise 7 A C T I V I T Y 6 How does the rebreathing trace compare to your baseline trace? (Look carefully—differences may be subtle. ) ________________________________________________ Why? _______________________________________________ ________________________________________________ Click Clear Tracings to clear the oscilloscope monitor.  ¦ A C T I V I T Y 8 Rapid Breathing 1. The oscilloscope monitor and the data recording box should both be empty and clear. If not, click Clear Tracings or Clear Table. 2. The air flow tube radius s hould be set to 5. 00. If not, click the ( ) or ( ) buttons next to the radius display to adjust it. 3. Click Start and conduct a baseline run. Remember to click Record Data at the end of the run. Leave the baseline trace on the oscilloscope monitor. 4. Click Start again, but this time click the Rapid Breathing button when the trace reaches the 10-second mark on the oscilloscope monitor. Observe the PCO2 levels in the display windows. 5. Allow the trace to finish, then click Record Data. What happens to the PCO2 level during rapid breathing? it decreased ________________________________________________ Why? co2 was removed more than during normal breathing ________________________________________________ ________________________________________________ Remember, you may click Tools and then either Print Data or Print Graphs to print your results. Click Clear Tracings before continuing to the next activity.  ¦ A C T I V I T Y 7 Breath Holding 1. Click on Start and conduct a baseline run. Remember to click Record Data at the end of the run. Leave the baseline trace on the oscilloscope monitor. 2. Click Start again, but this time click the Breath Holding button when the trace reaches the 10-second mark on the oscilloscope monitor. Observe the PCO2 levels in the display windows. 3. At the 20-second mark, click Normal Breathing and let the trace finish. 4. Click Record Data. What happens to the PCO2 level during breath holding? t rose ________________________________________________ Why? co2 exchange could not take place ________________________________________________ ________________________________________________ Rebreathing Repeat Activity 6, except this time click the Rebreathing button instead of the Rapid Breathing button. What happens to the PCO2 level during rebreathing? it increase ____________________________________ ____________ ________________________________________________ Why? there was more co2 in the inhaled air ________________________________________________ ________________________________________________ What change was seen when you returned to â€Å"Normal Breathing†? the rate and depth of breathing increased ________________________________________________ ______________________________________________  ¦ Remember, you may print your data or graphs by clicking Tools at the top of the screen and then selecting either Print Data or Print Graph.  ¦ A C T I V I T Y 9 Comparative Spirometry In Activity 1, normal respiratory volumes and capacities are measured. In this activity, you will explore what happens to these values when pathophysiology develops or during episodes of aerobic exercise. Using a water-filled spirometer and knowledge of respiratory mechanics, changes to these values in each condition can be predicted, documented, and explained. Did the total flow change? just a little ________________________________________________ Why? increase pump rate ________________________________________________ ________________________________________________ Respiratory System Mechanics 95 FIGURE 7. 4 Opening screen of the Comparative Spirometry experiment. Normal Breathing 1. Click the Experiment menu, and then click Comparative Spirometry. The opening screen will appear in a few seconds (see Figure 7. 4). 2. For the patient’s type of breathing, select the Normal option from the drop-down menu in the Patient Type box. These values will serve as a basis of comparison in the diseased conditions. 3. Select the patient’s breathing pattern as Unforced Breathing from the Breathing Pattern Option box. 4. After these selections are made, click the Start button and watch as the drum starts turning and the spirogram develops on the paper rolling off the drum across the screen, left to right. 5. When half the screen is filled with unforced tidal volumes and the trace has paused, select the Forced Vital Capacity button in the Breathing Pattern Options box. . Click the Start button and trace will continue with the FVC maneuver. The trace ends as the paper rolls to the right edge of the screen. 7. Now click on the individual measure buttons that appear in the data table above each data column to measure the lung volume and lung capacity data. Note that when a measure button is selected, t wo things happen simultaneously: (1) a bracket appears on the spirogram to indicate where that measurement originates on the spirogram and (2) the value in milliliters appears in the data table. Also note that when the FEV1 measure button is selected, the final column labeled FEV1/FVC will be automatically calculated and appear in the data table. The calculation is (FEV1/FVC) 100%, and the result will appear as a percentage in the data table. What do you think is the clinical importance of the FVC and FEV1 values? ________________________________________________ Why do you think the ratio of these two values is important to the clinician when diagnosing respiratory diseases? _______ demonstrates how the lungs are functioning ________________________________________________ FEV1 /FVC 100% 80% ______________________ 96 Exercise 7 Emphysema Breathing In a person with emphysema, there is a significant loss of intrinsic elastic recoil in the lung tissue. This loss of elastic recoil occurs as the disease destroys the walls of the alveoli. Airway resistance is also increased as the lung tissue in general becomes more flimsy and exerts less mechanical tethering on the surrounding airways. Thus the lung becomes overly compliant and expands easily. Conversely, a great effort is required to exhale as the lungs can no longer passively recoil and deflate. A noticeable and exhausting muscular effort is required for each exhalation. Thus a person with emphysema exhales slowly. . Using this information, predict what lung values will change in the spirogram when the patient with emphysema breathing is selected. Assume that significant disease has developed, and thus a loss of elastic recoil has occurred in this patient’s lungs. 2. Select Emphysema from the drop-down menu in the Patient Type box. 3. Select the patient ’s breathing pattern as Unforced Breathing from the Breathing Pattern box. 4. After these selections are made and the existing spirogram screen clears, click the Start button and watch as the drum starts turning and a new spirogram develops on the paper rolling off the drum. . Repeat steps 5–7 of the Normal Breathing section in this activity. 6. Now consider the accuracy of your predictions (what changed versus what you expected to change). Compared to the values for normal breathing: reduced Is the FVC reduced or increased? ______________________ reduced Is the FEV1 reduced or increased? _____________________ fev1 Which of these two changed more? ____________________ Explain the physiological reasons for the lung volumes and capacities that changed in the spirogram for this condition. _______________________________________________ ________________________________________________ ________________________________________________ 1. Using this information, predict what lung values will change in the spirogram when the patient who is having an acute asthma attack is selected. Assume that significantly decreased airway radius and increased airway resistance have developed in this patient’s lungs. 2. Select Asthmatic from the drop-down menu in the Patient Type box. 3. Select the patient’s breathing pattern as Unforced Breathing from the Breathing Pattern box. . After these selections are made and the existing spirogram screen clears, click the Start button and watch as the drum starts turning and a new spirogram develops as the paper rolls off the drum. 5. Repeat steps 5–7 of the Normal Breathing section in this activity. 6. Now consider the accuracy of your predictions (what changed versus what you expected to change). Compared to the values for normal breathing: reduced Is the FVC reduced or increased? _____________________ reduced Is the FEV1 reduced or increased? _____________________ fev1 Which of these two changed more? ___ ________________ Explain the physiological reasons for the lung volumes and capacities that changed in the spirogram for this condition. ________________________________________________ ________________________________________________ How is this condition similar to having emphysema? How is the fvc is less reduce than emphysema and it different? ______________________________________ the fev1 is more reduced, the fcv/fev1 % is also reduced ________________________________________________ Emphysema and asthma are called obstructive lung diseases as they limit expiratory flow and volume. How would a spirogram look for someone with a restrictive lung disease, such as pulmonary fibrosis? decreased fev1/fev ________________________________________________ What volumes and capacities would change in this case, and would these values be increased or decreased? normal or above normal volume ________________________________________________ ________________________________________________ In an acute asthma attack, the compliance of the lung is decreased, not increased as it was for emphysema, and air flows freely through the bronchioles. Therefore, will the FEV1/ FVC percentage be less than normal, equal to normal, or higher higher than normal? ______________________________________ Acute Asthma Attack Breathing During an acute asthma attack, bronchiole smooth muscle will spasm and thus the airways become constricted (that is, they have a reduced diameter). They also become clogged with thick mucous secretions. These two facts lead to significantly increased airway resistance. Underlying these symptoms is an airway inflammatory response brought on by triggers such as allergens (e. g. , dust and pollen), extreme temperature changes, and even exercise. Similar to emphysema, the airways collapse and pinch closed before a forced expiration is completed. Thus the volumes and peak flow rates are significantly reduced during an asthma attack. However, the elastic recoil is not diminished in an acute asthma attack. Respiratory System Mechanics 97 Acute Asthma Attack Breathing with Inhaler Medication Applied When an acute asthma attack occurs, many people seek relief from the symptoms by using an inhaler. This device atomizes the medication and allows for direct application onto the afflicted airways. Usually the medication includes a smooth muscle relaxant (e. . , a beta-2 agonist or an acetylcholine antagonist) that relieves the bronchospasms and induces bronchiole dilation. The medication may also contain an antiinflammatory agent such as a corticosteroid that suppresses the inflammatory response. Airway resistance is reduced by the use of the inhaler. 1. Using this information, predict what lung values will change in the spirogram whe n the patient who is having an acute asthma attack applies the inhaler medication. By how much will the values change (will they return to normal)? 2. Select Plus Inhaler from the drop-down menu in the Patient Type box. 3. Select the patient’s breathing pattern as Unforced Breathing from the Breathing Pattern box. 4. After these selections are made and the existing spirogram screen clears, click the Start button and watch as the drum starts turning and a new spirogram develops as the paper rolls off the drum. 5. Repeat steps 5–7 of the Normal Breathing section. 6. Now consider the accuracy of your predictions (what changed versus what you expected to change). Compared to the values for the patient experiencing asthma symptoms: Has the FVC reduced or increased? Is it â€Å"normal†? ________ no no Has the FEV1 reduced or increased? Is it â€Å"normal†? _______ fev1 Which of these two changed more? ____________________ Explain the physiological reasons for the lung volumes and capacities that changed in the spirogram with the application of the medication. _________________________________ ________________________________________________ How much of an increase in FEV1 do you think is required for it to be considered significantly improved by the not sure medication? _______________________________________ when the feve1 is closer to normal? ________________________________________________ a. In moderate aerobic exercise, which do you predict will rv change more, the ERV or the IRV? _____________________ b. Do you predict that the respiratory rate will change yes significantly in moderate exercise? ____________________ c. Comparing heavy exercise to moderate exercise, what values do you predict will change when the body’s significantly increased metabolic demands are being met by the not sure respi ratory system? _________________________________ ________________________________________________ d. During heavy exercise, what will happen to the lung volumes and capacities that have been considered thus far? hey will increase ________________________________________________ e. yes Will the respiratory rate change? If so, how? _________ 1. Select Moderate Exercise from the drop-down menu in the Patient Type box. The existing spirogram clears. 2. Click the Start button and watch as the drum starts turning and a new spirogram develops. Half of the screen will fill with breathing volumes and capacities for moderate exercise. 3. When the trace pauses, click on the individual measure buttons that appear in the data table above each data column to measure the lung volume and lung capacity data. . Select Heavy Exercise from the drop-down menu in the Patient Type box. 5. Click the Start button and the trace will continue with the breathing pattern for heavy exercise. The trace ends as th e paper rolls to the right-hand edge of the screen. 6. Now click on the individual measure buttons that appear in the data table above each data column to measure the lung volume and lung capacity data. 7. Now consider the accuracy of your predictions (what changed versus what you expected to change). Which volumes changed the most and when? ___________ Compare the respiratory rate during moderate exercise with that seen during heavy exercise. __________________  ¦ Breathing During Exercise During moderate aerobic exercise, the human body has an increased metabolic demand, which is met in part by changes in respiration. During heavy exercise, further changes in respiration are required to meet the extreme metabolic demands of the body. Histology Review Supplement For a review of respiratory tissue, go to Exercise H: Histology Atlas & Review on the PhysioEx website to print out the Respiratory Tissue Review worksheet.

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The life of an international student - Research Paper Example The basic reason as to why most people become international students is that the education standards in their home countries do not meet their needs. As a result, these students opt to learn in other countries whose education matches their expectations. However, in most cases, it is not easy to settle down in a foreign country as an international student. For some, the change is too overwhelming and they may opt to go back home, while others persevere and work towards achieving their goals and dreams. Luckily, some countries like the United States and Canada have programs in their universities and colleges that help international students cope with the new life. The life of an international student The transformation that an international student undergoes once they move to a foreign country cannot be understated. In most cases, being an international student means leaving your family and friends behind and adjusting to a completely new lifestyle. One is forced to learn a new languag e, learn the culture of the people, adjust to their schooling system and basically learn how to live in a new country. Before getting used to these changes, most international students feel like aliens, thus preferring to keep to themselves as they assess the people around them. With time, however, they start looking for other international student from their home countries so that the latter can help them adjust. ... Differences between the United States and the Saudi Arabian systems of education One of the challenges that international students face is the difference in education systems between their home countries and their host countries. For example, the education system of the United States differs from that of Saudi Arabia in a number of ways. One of the differences, for example, is in regard to the conduct of students in class. At the beginning, I was always the quite type in class because that is the culture of Saudi Arabian classrooms. The students in Saudi Arabian classes do not speak much but in America classrooms, the story is different as students are very opinionated. They also challenge the teachers directly in case they do not agree with what the teacher says. In addition, whereas Saudi Arabians are very disciplined in class, in terms of modes of dressing and behavior, American students have a lot of freedom. For example, students come to class in casual clothes and some even tak e snacks and sleep in class. Additionally, being from Saudi Arabia, I was accustomed to official dressing while attending class, and a lot of discipline during sessions. I, therefore, always felt odd when I went to class dressed formally and almost everyone else was in casual wear. Although I have tried to adapt to the American classroom culture, is still find myself being formal in dressing as I attend class and reserving some of my opinions during lectures. In addition to the classroom setting, I was also confused at the beginning because the American system seems to place so much emphasis on education and leaves little space for socialization. Here in the United States, one is expected to either be in class, in a study group, doing research, or participating in

Alternative Energy Essay Example | Topics and Well Written Essays - 2250 words

Alternative Energy - Essay Example They do not believe that alternative energy is the solution to dependence on oil. This essay presents and analyzes both sides of the debate, and critically examines its implication for sustainability. Argument for Alternative Energy Sources Numerous factors have triggered the debate over the capacity of alternative energy sources to solve dependence on oil. Some scholars claim that there is an urgent need to use alternative and renewable energy sources. Most energy scholars have the same opinion that, in the future, the world will completely drain its limited supply of oil. Scholars have the same opinion about the availability of coal in the future; as reported by the United States Energy Information Administration (EIA), supply in the U.S. alone can meet present energy demands for two centuries (Smith & Taylor, 2008, 38). The remaining supply of natural gas and oil are a much more disputed subject. Scholars vary considerably in their estimates of the peak of oil reserves, also refer red to as the ‘topping point’ (Smith & Taylor, 2008, 38-39). Oil’s topping point will occur when the world has used up precisely one-half of the total amount of remaining oil. This implies that the topping point of oil has been reached and that oil reserves will start to dwindle because oil is a nonrenewable energy source (Smith & Taylor, 2008, 39). The supply of natural gas, which is dependent on the availability of oil, is directly connected to this topping point (Podobnik, 2006). The United Nations (UN) made a decision to build the World Commission on Environment and Development in 1983. The name of the commission was eventually replaced with Brundtland Commission (Elliott, 2003, 7). Its objective was to look for sustainable environmental approaches. By raising awareness about the issues with nonrenewable, non-sustainable sources of energy, the Commission fueled and exposed the debate over the limited supply of fossil fuels and other justifications for the nec essity of using alternative and renewable sources of energy. Energy issues have been at the center of economic, political, scientific, and environmental discourses from then on. Those supporting a rapid adoption of alternative and renewable sources of energy believe that the calculated dates for the peak of oil production are mostly immaterial (Elliott, 2003, 18). Environmental issues and the likelihood of tipping points imply that continuous dependence on oil may bring about permanent harm to the natural world. The worst possible damage is a global extermination of species, as well as human beings. Since fossil fuels have to be burned to produce energy, air pollution has been a problem since the advent of the Industrial Revolution. Air pollution has largely been the outcome of burning fossil fuels to produce electricity and supply energy to transportation. Hence, air pollution contains chemicals emitted from burning of fossil fuels (Schmidt, 2007). Air pollution does not only bring about a huge number of untimely deaths annually in developed countries, it also causes environmental destructions. Bodies of water can also be damaged by the use of fossil fuel not merely through acid rain, but through contamination of surface water as well. A case in point is the Exxon Valdez oil leakage. Valdez, the oil

EMMA LARKINS FINDING GEORGE ORWELL IN BURMA Essay

EMMA LARKINS FINDING GEORGE ORWELL IN BURMA - Essay Example The army heightened a state of lawlessness that denied and extorted the people’s little resources to fulfil their political responsibility and unsustainable democracy in their society. The military government of Burma has showed similarities with the British colonial government in many ways for example it led to split of allegiances among different ethnic groups and also between the indigenous people of Burma (Larkin, 2011).  Also ethnic minorities were not allowed to acceses land, it also resulted to religious conflicts between the muslims, budhist, hindus and Christians in Burma. Their was aslo displacement of citizen both inside and outside Burma. Besides forced labour by the military has also been expirieced which has led to the human rights violation as well as explotaiton of the minority goups. Some of the tools used by post colonial government of Burma was one the tgroup identity where the minority were given the priority to manage local properties and istitutions. secondly rebellion rebellion was employed where the minority were rqruited into the police army surpressing the majority Burman. Thirdly the nationalist tool was used where the Burmese language and ethnicity was emphasized because of the cultural and religious diversity of Burman. The fear to loose power as suggested by Aug snag suu kyi led to all injustices of human right violation, ethnicity,forced labour and so on in Burman. Leaving Burma alone fear has been employed in many countries for example employees who advocate for their rights are threatened to be arrested hence they fear and step down.

Compare and Contrast the Way Rupert Brooke and Wilfred Owen Approach the Subject of War Essay Example for Free

Compare and Contrast the Way Rupert Brooke and Wilfred Owen Approach the Subject of War Essay The title of this poem is very powerful. It tells the reader that this is a very sad poem and that by going to war death is almost certain. Sassoon has done this to give the reader an idea of war, and, as the reader reads the poem their insight into the brutality and the sorrow of war increases. The first paragraph of this poem tells of the slow death of a soldier as the sun rises. Sassoon has skilfully manipulated language and his choice of words in order to create a visual image that is slowly sculptured as the first four lines are read. Dark clouds are smouldering into red while down the craters morning burns the dying soldier shifts his head? To watch the glory that returns† The first half of the second paragraph speaks of the patriotism of soldiers for their countries and how they â€Å"want† to die for their land. This can be observed in the line â€Å"Hankering for wreaths and tombs and hearses†. The final half of the second paragraph tells of how the soldier faces his destiny with courage. Writing has always been a tool for reflecting and commenting on society. During the 20th century many poets reacted to problems in the world with highly emotionally charged poems. The horror of war and the spiritual degradation it inflicts is evident in the work of the World War I poets. Wilfred Owen (1893-1918) and Siegfried Sassoon (1886-1967) were both soldiers and poets. Their poems reflect the loss of innocence and the horrible mental and physical toll World War I inflicted on the world. ?Both Sassoon and Owen wrote war poetry to inform people of the realities of war. Sassoons efforts to publicly decry the war were stunted when the military announced he suffered from shell-shock and sent him to a hospital to recover. His poetry became the means of sharing his opinion that the war had become a war of aggression and conquest, (Norton 1832). He wanted to share with the public the true cost of war. His poem They reflects the common assumptions of the people at home about what the soldiers will be like when they come home. He wipes away all the illusions and shows that youll not find/A chap whos served that hasnt found some change (lines 9-10). In the poem, the soldiers dont return better and brighter. Instead, Sassoon shows how they return less whole by describing their injuries.? Sassoon met Owen while both were in the hospital recovering. Both mens greatest achievements as poets dealt with the war. Sassoons poems about the war were, deliberately written to disturb complacency, (Poets 855). He called them trench-sketches and wrote about what he witnessed while fighting with detail and honesty. Many of his war poems are highly satirical. While at home during the war, he was disturbed by the publics opinion of the war. Poems such as Blighters show his anger toward the civilian world:? Id like to see a Tank com down the stalls,? Lurching to rag-time tunes, or Home, sweet Home. ? And thered be no more jokes in Music-halls? To mock the riddled corpses round Bapaume. (5-8)? While Sassoon wrote war poetry to express his anger about the war, Owens main influence on his writing was not just a desire to show what war was actually like, but also an expression of the horrors he saw in many aspects of life. His poetry was heavily influenced by nightmares he experienced since his childhood which were only worsened by his experiences in battle. While in the hospital, Sassoon helped Owen with his writing. At first, Owen used many of the same shock tactics used by Sassoon, but he eventually found his own voice. After helping Owen with final editing process of Anthem for Doomed Youth, Sassoon wrote that he, realized that his verse, with its sumptuous epithets and large-scale imagery, its noble naturalness and the depth of meaning, had impressive affinities with Keats, whom he took as his supreme expemplar. This new sonnet was a revelation . . . It confronted me with classic and imaginative serenity (Poets 750). Owens poems, such as Anthem for Doomed Youth and Apologia pro Poemate Meo were not just inspired by war or dreams, but were also written as replies to other authors, the latter in response to a remark by Robert Graves. Own was not only powerful in his subject matter, but also technically, which is why Sassoon, Graves, and other poets admired his work. His use of para-rhyme added greatly to his poetry because it, produces effects of dissonance, failure, and unfulfilment that subtly reinforces his themes, (749).? Both poets wanted to express their views and feelings about the war. Their experiences in battle, although horrible, inspired them to write better poetry than they did before the war, and in Sassoons case, even after the war. Owen seems to be a more psychologically complex person. His poems are often melancholy and reach people on a deeply emotional level. Sassoons poems also affect people, but they do not leave a lasting impression. Sassoons goal as a war poet is to shock, while Owens goal is to make people experience deep emotion. It is obvious from Sassoons own remarks about Owen that even he felt the extreme emotional and lyrical power of Owens poems. The work of each poet serves as a reminder of the awfulness of war and the effect war has on peoples lives. Dulce Decorum Est The poem Dulce Decorum Est was written by Wilfred Owen. This poem illustrates how poetry can be influenced by the subject of the words rather than the words influencing the topic. The poem uses various literary devices to show that dying for ones country can be a very ugly and horrible thing; putting this idead into a poem, makes poetry a very ugly thing. Wilfred Owens makes use of many devices, but one of the first ones used in the poem is a simile. Bent double, like old beggars under sacks. This allows one to imagine a group of people hunched over, to malnourished and beaten to even stand up straight. Another example is floundring like a man on fire or lime. The man described has been poisoned by gas, but he looks as though he is running around trying to put out a fire on himself. The simimle illustrates the suffering of the man and his hopelessness. The author also utilizes words that have definite negative connotations in order to give the reader a feeling of unease and malady. Words such as sludge, fatigue, guttering, froth-corrupted, vile, and incurable, all have negative connotations. The words taken from the context of the poem still do not, and likely could not have any possible positive images or ideas associated with them. By choosing such words Owen condemns his poem to being sorrowful, sad and ugly. This is likely the authors intent as he sees war, sorrowful, sad, and ugly. Owen uses these literary devices and others to reach a single end. A sensory image of watching a man, in service of his country, die a terrible death. These include, the images of hunched men traveling through mud, hearing gas shells and putting on masks, a man drowning in gas, and the horrible ghastly death of that man. Owen incorporates sound with the blood Come gargling which enhances the horror felt by the reader. Wilfre Owen uses all these techniques to illustrate a simple point, that the phrase Dulce et decorum est pro patria mori, or translated to english, sweet and honorable it is, to die for the fatherland, is a lie. His poem tries to make real to the reader how horrible death is even when in the service of ones country. The statement is often made to children in search of adventure, but Owen makes clear that it is indeed a falsehood.

Analysis of the Credit Card Industry in Turkey Essay Example for Free

Analysis of the Credit Card Industry in Turkey Essay The current Turkish government is very pro western and secular, however its divided religious loyalties, issues surrounding Greek sovereignty rights and fundamentalist groups threaten the expected 5 year stability of this administration. Government involvement in banking The Turkish Government has a history of involvement in banking affairs which is of concern to international investors. The Turkish state owns and finances a number of its banks and provides artificial stability to the banking system through state funded initiatives. The Government has also tailored wages in line with inflation rates e. g. minimum wages rates. With recent IMF intervention the long term plan for Turkey is still not absolutely clear. EU Membership The Turkish Government is pro EU membership and this is potentially the biggest paradigm shift on the horizon for Turkey’s financial system, this factor is further dealt with as a key driver. Economic †¢ Interest Rates Low interest rates in Turkey fuel loan take-up and have caused increase in credit card issue. Historically higher interest rates led to more widespread loan default and meant that less switching occurred as consumers were â€Å"tied† to provider. Economic growth in Turkey, with higher levels of middle and upper income, urban dwelling professionals and better access to continuing education has undoubtedly increased credit card take-up. (This could also be construed as a social factor). †¢ Global financial crisis The effects of the global financial crisis will have a major effect on banking restrictions to lending and credit availability in Turkey. Turkey’s export markets will be likely affected by the ongoing crisis which has a major effect on GDP which in turn affects spending power. Social †¢ Higher standard of living Higher standards of living among consumers have a beneficial knock on effect for credit cards issuers. In Turkey 7. 5% of GDP is invested back into education thus consumers are more financial savvy. †¢ Urban/Rural Divide Urban dwellers have a much higher likelihood of credit card use given their potential for access of issue and probability of a regular wage earning role. As the economy develops Turks are increasingly moving off the land from poorly paying seasonal work to the cities that offer a better chance of regular income and personal development. Technology †¢ E –Commerce Worth in excess of 2 billion euro to the economy and with 16 million people accessing the internet E-Commerce is a huge growth area and potential distribution channel for the credit card industry. It is also a medium for information driven purchasing through advertising potential and its access is furthered through telephone technology integration. †¢ SMART Cards The security afforded to the credit card industry through use of SMART cards has a beneficial affect on usage through; 1. Increased level of merchants accepting the facility 2. Security for use in Internet Cafes (here large numbers access the internet) 3. Security of service has become a battleground for competition among issuers Coupled with the above technologies, the explosion in EPOS facilities mean more access to products and services through credit card use, homogenising the myriad of potential transactions and benefiting both consumer and merchant. ATM’s also have further facilities to enhance the benefits of using plastic such as bill pay, mobile kiosks etc. Legal †¢ Intervention of Government/Key official Institutions There have been widespread changes in the law in Turkey affecting the credit card industry such as; 1. Restriction on credit card limits . Illegality of altering terms without informing consumer 3. Increases in minimum payment required 4. The Central Bank’s lowering of the interest rate cap 5. Loosening of the frameworks around mergers and acquisitions All of these interventions alter the attractiveness of the market for the credit card industry, which was historically fraught with lack of reg ulation and anti-consumer practises. Identify the 4 KEY DRIVERS FACING THE CREDIT CARD SECTOR 1. Technological Advances 2. State Intervention in Financial Affairs 3. EU membership 4. Rural-Urban Migration Technological Advances The rapidly advancing technology in the field of mobile payment will have a lasting effect on the credit card industry. Companies that can stay ahead of the game with new technologies in security, risk management and will be best placed to benefit from increased A physical â€Å"credit card† is really only a vehicle to hold a magnetic strip containing coded information. In terms of technology this is already quite dated; †¢ Already systems are designed to â€Å"swipe† a card on a merchant’s mobile phone, this will allow for a myriad of services which will no longer require cash transaction e. g. street traders. Advances in retina scanning technology are also at an advanced level and it is envisaged that the future of mobile payments may be through facial recognition or retina scanning. †¢ Other technology such as what is used in â€Å"The Baja Beach Club in Barcelona† where they inject a rice-size â€Å"VeriChip† RFID device into the wrist or upper arm of its patrons whom pay by swiping their arm – adapted from http://www. creditcards. com/credit-card-news/credit-cards-of-the-distant-future State Intervention The level of further state intervention in Turkey’s financial affairs will be a key driver in Turkey’s future credit card success or decline. As we have seen, moves by the government to regulate the industry have impacted on the potential earnings of the banks through lowering interest rates. In turn this type of regulation has stabilised the markets and led to economic growth which impacts positively on numbers of consumers available to the sector. Whether the current â€Å"Republican Democracy† in Turkey will be in power going forward is obviously of importance to this argument. With elections due in 2011 the future of state intervention in banking affairs is unclear. EU Membership Turkey becoming a full member of the EU will be another key driver in the credit card industry. EU entry will mean the freeing of trade and access to a further 500 million consumers. It is most likely that Turkey would be a more attractive market for global companies, of interest here, financial organisations who would be attracted by the large numbers of â€Å"unbanked† consumers and those who see Turkey strategically as the gateway to Eastern markets. The credit card market would likely become much more competitive with new entrants who would most likely look to merge with/acquire existing indigenous banks. Rural-Urban Migration According to the case study the majority of people in the rural areas of Turkey tend not to be credit card users. As the economy improves larger numbers of rural people (especially male) will likely move towards the larger urban centres to participate in the industrial or service sectors. This in turn leads to greater numbers with the potential to use credit cards, in turn offering greater numbers of potential consumers to the sector. SECTION 2 – Porters 5 Forces 2. Use the five forces framework to identify the forces affecting the Turkish credit card sector a. Graphically illustrate the five forces (see overleaf) b. Draw conclusions from the 5 forces analysis to explain; 1. How attractive the sector is I consider the Turkish credit card sector to be an attractive market for a large multinational e. g. BNP or Barclays to enter. From my analysis I have concluded that consumers are fragmented and suppliers are concentrated. Rivalry is high, yet only among 4 suppliers, considering rivalry in an industry such as haulage this must be considered attractive. Capital requirements of entry are high, but not on the scale of industries such as mining might be. Economies of scale and experience exist, however for companies already in credit card markets in other countries by no means insurmountable. The threat of substitutes is relatively low as the credit card holds a relatively niche position. Product differentiation/loyalty is low among existing consumers; good offers would attract new business, as would strong internet presence. Turkey has; â€Å"40 percent of people who are bankable based on their socio-economic status and age in Turkey are still â€Å"unbanked,† having no accounts with any banks in Turkey â€Å" (www. mckinsey. om/clientservice/ /Credit_Cards_in_Turkey. ashx) This data identifies a large section of the Turkish population who are potential consumers for a new entrant; therefore the market could potentially grow significantly for all players involved. 2. How the competitive forces are changing/may change The competitive forces are currently changing most notably in areas such as consumer access to information. More widespread access and use of the internet will drive further competition in the market through portals such as comparison websites, industry reviews etc. This will ultimately increase bargaining power of consumers, leading to decreased profits for suppliers. EU accession would alter the competitive forces among the major players currently in the sector. Interest rates set by the ECB, participation in the single currency etc. would have a significant impact on the state financed banking institutions and would alter their relevance. One would suspect that in a free market system the Turkish government would relish the opportunity of divesting the burden to international organisations to increase competition. With increased market stability and better financial education, consumer’s use of substitutes may extend to less expensive forms of credit such as personal loans. Coupled with better economic conditions consumer’s use of debit cards may also increase; given that currently lower income workers struggle to maintain a balance sufficient to cover their living costs. 3. How the sector may change to reflect changing forces The credit card sector can move more of its marketing budget toward E-Marketing and target new and younger consumers through this medium. MBNA have used this marketing channel very successfully in the past. In order to combat increased uptake of personal loans and increased use of debit cards the credit card sector may look at collective lower interest rates, better offers through loyalty bonuses and customer kickbacks and better education of its customers as to how to better use their credit cards. In order for the credit card sector to prepare for increased competition post EU accession it may look to further differentiate its offerings to appeal to the Turkish people e. g. align the credit offering with cultural values or emotions. It might be necessary to offer further services aligned to credit cards such as life insurance to augment and differentiate the offering. 3. Scenario Planning Scenario 1 â€Å"Renewed Political/Terrorist Violence in Turkey† In recent years, terrorist bombings some with significant numbers of casualties -have struck religious, political, and business targets in a variety of locations in Turkey. The potential remains throughout Turkey for violence and terrorist actions both by transnational and indigenous terrorist organizations such as PKK, . Revolutionary Peoples Liberation Party/Front (DHKP/C) and AlQa’ida. Adapted from http://www. eubusiness. com/europe/turkey/invest) Given Turkey’s increasing dependence on foreign direct investment a return to more concerted campaign of political violence would spell disaster for the credit card industry. Large financial corporations, especially US owned would be deterred from entering the market, or potentially pull out of t he market thus decimating competition. Access to sources of international credit and lending would dry up therefore affecting consumer’s ability to purchase products and services on credit. Turkey’s export market would potentially be destroyed as Western nations would deter from transacting in case monies were being skimmed to fund further terrorist activity. This would further lower the GDP of the country affecting the spending power of consumers in turn negating the need for credit cards. Further knock on effects of violence include the loss of capital Governments have available to invest in its economy, on education and infrastructure. Government capital would have to be spent on further military and security projects. The tourism industry, a huge earner for Turkey would be decimated as travelers would fear the threat of violence. The black market economy would thrive under such conditions and regular banking functions would significantly cease with many consumers using cash/barter systems of attaining needs. With respect to the Credit card sector, this scenario would be highly detrimental to its future, as consumer confidence in the financial service sector would be decimated. The sector would have to pour vast resources into transaction security and marketing the brand safety and correct usage policies to consumers. Default numbers would likely increase due to instability and escalating interest rates. Scenario 2 â€Å"Turkey Gains Full EU Membership† â€Å"The EU is committed to supporting Turkey in its path for membership. The initial objective of EU financial support towards Turkey was the extension of an area of peace, stability and prosperity within and beyond Europe. Once the Union accepted Turkey as a candidate, financial assistance began to focus on supporting Turkey in its preparation for EU membership† http://www. eubusiness. com/europe/turkey/funding A study on the EU (http://europa. eu/rapid/pressReleasesAction. o) reported the following economic benefits of a country joining the EU; 1. An average of 2. 15% increase in GDP 2. Exchange rates for Turks travelling through Europe would be eliminated, as would the potential damaging effects exchange rate swings have on Turkish exports. I would assume that the credit card sector would become significantly more competitive in the light of EU membership therefore the sector would have to increase its marketing and branding spend, but would have a larger pool of consumers to choose from.