Public Utilities Term Paper Example | Topics and Well Written Essays - 500 words

Public Utilities - Term Paper Example listically behaved sector to a private owned and liberalized one since the 1980s with the privatization of British Telecom and the introduction of competition in the US long distance services (Wallsten, 2001). Based on the theoretical perspectives on privatization, it has been argued that the privatization of telecommunication sector will result in increasing the sector’s efficiency and overall performance. The empirical studies show the results varying in different countries. Given this background, this essay critically evaluates the privatization process of telecommunications all over the world and its impact. This essay is organized as follows. Section 2 discusses the privatization process of telecommunication sector all over the world. Section 3 discusses the theoretical arguments behind privatization. Section 4 discusses the empirical studies son the telecommunications privatization. Section 5 discusses the country experiences in this regard. Section 6 concludes the essay. Due to the importance of telecommunications sector as a vital part of the national infrastructure in each country, the policy makers in this sector are supposed to ensure the availability of telephone to all upon demand, accessibility to the basic services to all people at affordable prices as well as to protect and defend a country’s security interests (Maitra, 2006). Moreover, being a technology intensive sector, the policy makers need to ensure that the country is making use of the most advanced technology in this sector to make use of all the available opportunities in the technology field. The three main challenges in this sector in front of the policy makers in the 1950s and the 1960s in all countries were the fast technological change, the poor performance of the state owned sector including long waiting times for accessing services and limited financial resources for availing new technologies that facilitate the growth in this sector (Maitra, 2006). Consequently, the three

Heat of Combustion Essay Example for Free

Heat of Combustion Essay Mapua Institute of Technology School of Chemical Engineering and Chemistry Physical Chemistry I Experiment No. 6 Heat of Combustion Alain John Cantaa, Jefunnie Matahumb, Marife Comprac, Nino Adrian Rodelasa, a b Bachelor of Science in Chemical Engineering, Mapua Institute of Technology, School of Chemistry and Chemical Engineering Bachelor of Science in Biological Engineering and Chemistry, Mapua Institute of Technology, School of Chemistry and Chemical Engineering c Bachelor of Science in Chemistry and Chemical Engineering, Mapua Institute of Technology, School of Chemistry and Chemical Engineering Heat of combustion Calorimeter Aromaticity Relative energies Heat of formation Date submitted: March 02, 2013 ABSTRACT The heat of combustion, ? H, can be measured through a bomb calorimeter. It is the energy released as heat when a compound undergoes complete combustion with oxygen under standard conditions. The chemical reaction is typically a hydrocarbon reacting with oxygen to form carbon dioxide, water and heat. It may be expressed with the quantities: energy/mole of fuel (kJ/mol), energy/mass of fuel, energy/volume of fuel. The heat of combustion is conventionally measured with a bomb calorimeter. It may also be calculated as the difference between the heat of formation of the products and reactants. The experiment aimed to determine the heat of combustion of some hydrocarbons namely, benzoic acid, naphthalene, and sucrose and to be familiarized with calibration of bomb calorimeter. Parr 6200 Bomb Calorimeter, a device that measures heat of combustions of different compounds, and the Parr 6510 water handling system were used. The samples used were benzoic acid, naphthalene and sucrose. The results of the experiment showed that naphthalene has the highest heat of combustion followed by benzoic acid and sucrose, respectively. The analysis of the molecular structure of the samples found that increasing aromaticity of compounds yield to a higher enthalpy of combustion. Discussion of the relative energies of the bonds broken in combustion had contributed to the overall concept of the experiment. In general, the heat of combustion of a certain compound can be measured in a typical bomb calorimeter and aromaticity is directly proportional to the heat of combustion of a particular compound. . Introduction Combustion is the chemical term for a process known more commonly as burning. It is one of the earliest chemical changes noted by humans, due at least in part to the dramatic effects it has on materials. 1The mechanism by which combustion takes place is well understood and is more correctly defined as a form of oxidation. This oxidation occurs so rapidly that noticeable 1 Charles E. Smith heat and light are produced. In general, the term oxidation refers to any chemical reaction in which a substance reacts with oxygen. For example, when iron is exposed to air, it combines with oxygen in the air. That form of oxidation is known as rust. Combustion differs from rust in that the oxidation occurs much more rapidly, giving off heat in the process. The first law of thermodynamics is the application of the conservation of energy principle to heat and thermodynamic process where the change in internal energy is equal to the difference in heat added and work done by the system. When a chemical reaction occurs in an open container most of the energy gained or lost is in the form of heat. Calorimetry is the study of the measure of heat of both physical and chemical reaction. In a constant-volume calorimeter, the heat measured, qv is simply the internal energy of the system for no expansion work is done at constant volume. A calorimeter is the device used for the process of calorimetry. 3 There are many kinds of calorimeters namely the bomb calorimeter, the calvet-type calorimeter, the isothermal calorimeter, the differential scanning calorimeter and the constant-pressure calorimter. Calorimeters can measure heat changes and as well as heat constants such as heat of formation and heat of combustion. Heat of combustion or Hc is the energy released when one mole of a compound is reacted with oxygen, forming carbon dioxide and water as end products. Theoretically, the heat of combustion can be calculated using the heat of formation of the products and reactants or using the bond enthalpies bonds formed and broken. One of the most widely used calorimeters today, is the bomb calorimeter. 4 A bomb calorimeter is a type of constant volume device which makes the system isolated from the surroundings. It is an excellent device in measuring heat of chemical processes including the heat of combustion. The bomb calorimeter is used to completely burn substances to produce water and CO2 in an excess of oxygen. The heat of combustion released is absorbed by the calorimeter vessel in which the bomb is immersed, and results in a temperature increase ? T. The temperature measuring device in the bomb calorimeter, measures the heat change in the water. The bomb calorimeter uses the following equation to measure heat changes. Q? ?t * e m [1] where Q is the energy involved, ? t is the change in temperature of the system, e is the energy equivalent of the calorimeter, and m is the mass of the sample. In this type, the heat measured for the sample burned at constant volume, qv is the change in internal energy of the substance from its initial to final states. 1The enthalpy change, (the heat of combustion for this process) is related to the internal energy, by the equation below. 2 3 Physical Chemistry 4th edition Atkins Physical Chemistry 8th edition 4 Principles of Chemical Engineering. 7th Edition Page 2 of 11 The enthalpy of combustion can be calculated from the temperature rise, which results when the combustion reaction occurs under adiabatic conditions in a calorimeter. It is important that the reaction in the calorimeter take place rapidly and completely. The objectives of the experiment were to setup and use a bomb calorimeter as well as to obtain the value of the heat of combustion of some hydrocarbons namely, benzoic acid, naphthalene, and sucrose using the bomb calorimeter. and electric heater and has a precision electronic thermometer. Temperatures are measured with a high precision electronic thermometer using a specially designed thermistor sensor sealed in a stainless steel probe which is fixed in the calorimeter cover. Measurements are taken with 0. 0001o resolution over a 20oC to 40oC working range, with all readings shown in Celsius. It has a semi-automatic system for charging the bomb with oxygen. Oxygen from a commercial cylinder is connected to a microprocessor controlled solenoid installed in the calorimeter. In filling the bomb, the filling hose connector slips onto the bomb inlet valve. The filling proceeds automatically at a controlled rate to a pre-set pressure. 5 2. Materials and Methods 2. 1 Equipments used The equipments used were Parr 6200 Bomb Calorimeter and Parr 6510 Water Handling System.

Body Image Distortion Among Women In The Media

Body Image Distortion Among Women In The Media American society, most commonly women within the United States, have a rather unhealthy obsession with their personal looks, the physical strive and determination to be acceptingly beautiful, and the idea of looking as flawless as humanly possible. The common perception of beauty is falsely created for women to believe that the ultimate perfect image is obtainable. However, it is indeed an impossible standard for most women in American society today. This idea of impossible perfection is mostly driven by the beauty industry who work to sell their products to those women who are insecure about their image. The media alone is at war with body image. Women in todays society are viewed as being digitally transformed, airbrushed, surgically improved, or suffering from various different eating disorders. These are just a few of the many different difficulties facing women in American society today due to the largely exaggerated media influence. Teenaged girls especially learn what society considers an ideal physical appearance generally from the media and the images that they are crowded with in magazines, movies, television, and also in music which in turn manipulates what is truly fashionable and attractive. Recent studies have found that by the time a women is seventeen years old, she has received overs 250,000 commercial messages through the media. (Body Image and Advertising, 2000) Women tend to see multiple different images throughout their lives which impacts the ways they think of themselves and their own self-worth within American society. Today, models weigh about 23 percent less than the average woman. (Weighty Matters, 2007) According to the National Eating Disorders Association, the average American model is 5 feet, 11 inches tall and weighs 117 pounds. The average American woman is 5 feet, 4 inches tall and weighs 140 pounds. (Body Image: Loving Your Body, n.d.) All too often, American society associates being thin with hardworking, beautiful, strong, and self-disciplined. On the other hand however, being fat is usually associated with being lazy, ugly, weak and lacking willpower. (Body Image: Loving Your Body, n.d.) Similarly to this idea, a life-sized Barbie doll would measure a thirty-eight-inch bust, eighteen-inch waist, and thirty-four-inch hips. (Ojeda, 2003, p.14) The average American woman measures a thirty-seven-inch bust, a twenty-nine-inch waist, and forty-inch hips. (McDowell, 2006, p.48) What is the media trying to teach women within the American society? Some critics in the American society believe that the unrealistic ideas of physical looks and personal flaws may cause young children to face insecurities and lead to poor health choices later on in life. What most people dont realize is that every image of a model or actress in a fashion or beauty magazine has been touched up using the latest computer enhanced technology to remove flaws that are most commonly faced by women including pimples, bumps, stretch marks, wrinkles, and various other different imperfections. Advertisements emphasize thinness as a standard for female beauty, and the bodies seen in the media are frequently not typically normal, healthy women. In fact, 69 percent of girls in one study said that magazine models influence their idea of the perfect body shape, and the acceptance of this impractical body type forms an obtainability that is rather unrealistic for virtually all women in society today. (Body Image and Advertising: A Thin Ideal, 2008) This concept pushes forth the idea of vast concern for the rise in eating disorders and other topic related areas. Many Americans attribute eating disorders to society as a whole. Hollywood and the media demand an impossible standard of thinness, and young people feel that in order to be attractive to those around them, they have to look like celebrities in the spotlight which is what many media outlets are influencing generation after generation with. With approximately six billion people in the world, and ten million of them suffering with some type of disordered eating, the media obviously doesnt cause everyone to develop anorexia, bulimia, or compulsive overeating. Current statistics have indicated that approximately one in every one hundred teenage girls may develop an eating disorder. (Re: What Are the Causes of Eating Disorders, Pitso, 2008) Diet advertisements are also another source of problems. Whether it be on television, in health journals, magazines, newspapers, and other media sources, society is continuously influenced with the concept that losing weight will make an individual more confident and reliable to stick to a specific diet plan. Often times, many Americans are persuaded with the idea that by sticking with a certain diet plan, individual success is a guarantee however, it has been proven through various different general studies and statistics that most diet plans do not indeed show results or in many cases do not even work. As long as society continues to buy into diet companies and their fabricated claims by purchasing these products, the more the diet industry will keep pushing forth their mottos on American consumers. With a distorted view of foods role in life, some teenagers mistakenly expect that losing weight will make everything in an individuals life better and more sufficient. People naturally have different shapes and body types. There are a numerous variations in height, skin tone, eye color, hair color, height, weight and other physical features which make up the incredibly large diversity of America. The millions of messages about thinness, dieting and beauty tell ordinary people that they are always in need of adjustments, that that the female body is an object to be perfected. Researchers report that womens magazines have ten and one-half times more ads and articles promoting weight loss than mens magazines do, and over three-quarters of the covers of womens magazines include at least one message about how to change bodily appearance, whether it be for dieting, exercising or cosmetic surgery. (Beauty and Body Image in the Media, 2010) Even the average woman is said to fit into anywhere between sizes ten and above, whereas the average model fits into a size two or three. Knowing that todays ideal body is another passing trend does not lessen the desire teenage girls and younger adult woman have to adhere to the current ideal and be considered attractive. However, it is important to remember that the current standard of extreme thinness is unrealistic and impossible for most women to achieve. (Ojeda, 2003, p.16) In 2003, Teen Magazine reported that approximately 90 percent of women are dissatisfied with their appearance in some shape or form. (Womens Body Image in Canada and the Facts, 2008-2010) Rather than striving for the ideal image, keeping the body healthy by exercising regularly on a routine basis and eating nutritious food is beneficial in more ways than one and create strong and fit lifestyle habits for the majority of women in American society today. Naturally, feeling healthy can boost your self-esteem and your body image. (Ojeda, 2003, p.16) In todays society, the problem that we, as Americans, are faced with is rather complicated and as a result, there are no real easy solutions. Many individuals tend to lean towards a more active approach mostly by watching out for themselves and being conscious of what is going on in the media however, taking appropriate responsibility for ones self and limiting the exposure of the vast media will propose a healthier lifestyle. Distorted and unattainable images are the inevitable consequences of a social system that face many downfalls. As a society, Americans have created an environment so obsessed with the bodily image that those with power give approval for being thin and disapproval of being fat, creating a generation of individuals so self-conscious about their bodies that it in turn most often, negatively affects their health. Everywhere an individual looks, this situation seems to be a fab that one cannot get away from, the concept it simply too overpowering. Todays pretty faces represent a new kind of people, female figures and displays in stores are revealed with a large amount of sex appeal. With a stressed importance on the ideas of absolute beauty and flawlessness, television commercials, magazines, billboards, and various other mass media sources across the country are just a small, insignificant consideration and excuse of just how warped American societys view is of beauty and real body image. According to the narrow minded society in which Americans live, there just doesnt seem to be a limit on how beautiful an individual can become, especially for women. Most of us are aware of our societys emphasis on the importance of appearance, and we know what the socially sanctioned standards of beauty are. But not all of us accept or internalise these standards: strong-minded individuals who reject current standards are more likely to have a positive body-image. (Mirror, Mirror, 1997)

Film: 2001 :: Papers

Film: 2001 2001 is a masterpiece of cinema that still influences film makers nearly thirty years after it was made -- but what does it actually mean? Therein lies the enigma. Of course, 2001 is open to many interpretations and probably even Kubrick couldn't provide the "correct" one. The film is very different from the book; Kubrick reduced the original script to its bare essentials making the actors part of the narrative , but not telling the narrative through the script. making it a lesser part of the hole experience. Where there is speaking it is almost always symbolic The first words spoken signal the decay of human language to empty phrases: "Here you are, sir. Main level, please." The opening of 2001 is the Dawn of Man sequence which dovetails neatly with end of Dr. Strangelove: "We'll meet again, some sunny day " First image in the film is of a rising Sun Obviously, Kubrick pondered deeply the astonishing reality, that idea that man was smart enough to blow up the earth, but not smart enough to stop that from happening (kubric)(man doesn't want to nail himself, but he does). How could such a phenomenon occur? With such strong symbolic events and imagery in the opening seen it is hard to see them all as individual events, kubric uses these to tell the narrative of the story. The Sun is not just light, but heat (a desert). Making the Sun not necessarily good, the Sun is usually seen as positive in relation to dark, but not in a desert. This makes the sun a negative, with the use of water as a positive. The leopard killing the zebra Is a key element to the opening scene representing the behaviour of man the Zebra is a coexistence of black and white? Good an bad together just like man, making the leopard the destruction of man kind maybe symbolising the bomb. To echo the directors words ,QUOTE "you're free to speculate as you wish about the philosophical and allegorical meaning of the film" but

My Favorite Horse Show Essays -- Personal Narrative, descriptive essay

As the first rays of the sun peak over the horizon, penetrating the dark, soft light illuminates the mist rising up from the ground, forming an eerie, almost surreal landscape. The ground sparkles, wet with dew, and while walking from the truck to the barn, my riding boots soak it in. The crickets still chirp, only slower now. They know that daytime fast approaches. Sounds, the soft rustling of hooves, a snort, and from far down the aisle a sharp whinny that begs for breakfast, inform me that the crickets are not the only ones preparing for the day. Sliding the barn doors open, I step into a warm, comforting environment. Musty straw mingles with the sharp aroma of pine shavings, complementing each other. A warm glow from sporadically placed incandescent lightbulbs richens the leather tack, all cleaned and hanging ready for the day's use. From it wafts the smell of a new pair of shoes. The fruity essence of "Show Sheen", applied after yesterday's baths, still lingers in the air. Even the harsh stinging scent of urine and manure is welcome at this early morning hour. Breaking open a bale of hay, I sense the sweetness of the dried timothy as it engulfs my olfactory system, making me wish my queasy stomach had not made me skip breakfast. I am nervous, as are many others. I know that the day ahead will bring excitement, dread, triumph, and defeat. The unpredictable nature of horse shows causes frenzied questions, like salmon spawning, to run constantly though my mind. Will the judge like my own particular style? What if t he red flowers bordering the first jump spook my horse? What if a piece of paper on the ground blows into the ring? Will this horse show be a success? The outcome depends not just on me; but a... ... to the barn, friends and family echo "congratulations" and "good for you". The feeling of accomplishment as I dismount amidst all of Hartwood's magic erases any doubts of earlier. Now we must pack. Our gear slowly fills the trucks, until finally, only the tack trunks remain. As I hold my ribbons, my gaze shifts to the showgrounds, almost deserted now, a forgotten battlefield with only the last stragglers searching for forgotten treasures, until I close my eyes and all of Hartwood's splendor flashes before me. Silently I say good bye. Laying my ribbons gingerly into my tack trunk, I straighten every wrinkle, smoothing them with my fingertips, almost caressing. Lowering the lid, I see their bright colors fade into the deep black darkness. Blues, reds, greens, soak in the smell of the neighboring leather, all tucked in, prepared for the long ride home.

Melvilles Moby Dick :: Essays Papers

Melvilles Moby Dick Melville was born in a time of American history where inspiring works of American literature began to emerge. It was also a time when America had not completely separated its literary heritage from Europe, partly because there were successful literary genius’ flourishing there. Melville proved to be a genius of his own, with his many works such as Moby Dick, Billy Bud, and Bartleby. Three distinct themes could be seen throughout most of his literature; whales and the whaling industry, commentary on the universe and human destiny, and ideas about God and nature. Moby Dick is an incredible work by Melville most often referred to as an epic, a tragedy, a novel, an exposition on the whaling, and a spiritual autobiography. It is often overlooked that a deeper, more symbolic, meaning may have been the driving force behind Moby Dick. Herman Melville was born on August 1, 1819, to Allan and Maria Melville. He was the third of eight children in the Melville family. He was generally described as silent and slow; his mother thought him to be a very dull child. In 1832 Melville suffered tragedy when his father died. Finishing school when he was fifteen, Melville took service as cabin boy aboard the St. Lawrence. After returning to his home in New York for some time after serving as cabin boy, Melville took berth as an ordinary seaman aboard a whaling ship called the Acushnet. After approximately four and a half years as a seaman on various ships, he set down, again in New York, to write of his experiences. Within six years he had published five books. Shortly thereafter Melville was married and moved his family to a farm near Pittsfield, Massachusetts. It was at this location where Moby Dick was written. Moby Dick was first published in 1851. Melville continued to write, both poetry and stories, until three months before his death in 1891. Melville’s perspective on life was that God created the universe with an infinite number of meanings and man is always trying to determine one specific meaning (Robertson-Lorant 65). It is possible that Melville, through writing, was seeking out some of his many destinies bestowed upon him by God. The basis of the name Moby Dick can be traced back to an article in the New York Knickerbocker Magazine in May of 1839 (Madden).

Business Proposal Checklist

Explain how energy evolved over time Into a consumable good. Does It still satisfy the original need for which It was created? Why or why not? How have our basic needs for energy changed? According to Breach (20061 the daily energy use per person has increased from 2,000 kcal when humans were just hunters to 244,526 kcal in 2000. From the beginning of the human race, we have used energy, First by setting wood and other materials on fire, using animals to assist In dally tasks, to using machinery, to finally evolving to the massive use of energy today.Today energy Is still needed to cook our DOD and make our daily lives easier thus satisfying the original need. Although energy is still necessary, I believe humans use too much Reference: Breach, A. J. (2006). Energy: Physical, environmental, and social Impact (3rd De. ). Upper Saddle River, NJ: Pearson-Prentice Hall. WOK-Q: What is the connection between population growth and energy use? How are each interrelated to the supply and dema nd of energy consumption and creation? Explain your answer. The Increase In population Is supported by the steady increase of our use of energy.Modern society is dependent on a massive amount of energy. If that energy were not available or if it declined at any significant amount, it could have a detrimental effect on the population. Should energy supplies decline, price will increase, and the economic challenged population may have to go without needed fuel or electricity. If they are already below a sustaining level, this could be tragic. WOK-Q: Why is it more expensive to transmit electricity locally than over long distances? Please list various reasons for this. Why would an energy plant want to distribute electricity locally if there are fewer profit margins?According to Breach (2006), ten percent of electric energy Is lost In the transmission process. Of the ten percent, eight percent Is loss locally. There are higher losses of energy at very low distribution voltage. Therefor e, the cost to transmit electricity locally is more expensive. The increase in market share, market growth, and no way to storage unused energy, would be reasons why an energy plant would want to distribute electricity locally even though profit margins were less. Breach, A. J. (2006). Energy: Physical, environmental, and social impact (3rd De. ). Upper Saddle River, NJ: Pearson-Prentice Hall.WOK-Q: Explain what is meant by base load, intermediate load, and peak load. Why are these incepts important to understanding the production of electricity and energy management? How do these relate to the end users of the product? According to Breach, base load is the basic amount of electricity that is always required. Base load is generated by the utilities large facilities. Intermediate load is the amount of electricity that slowly cycles on and off. Peak load is the time in which demand for electricity is the greatest. Peak load is usually only a few hours a day.Utilities meet peak load de mand by using additional generators that can be stated quickly. Electricity cannot be easily stored. Therefore, demand has to be anticipated by the utility company. Season and time of day are the predominate drivers of consumption. Enough electricity needs to be supplied to meet demand on the hottest day of summer. Maintaining a reliable electric system without interrupting power to the consumer cannot be accomplished without the balance of supply and demand. Describe the extent of damage done to the power grid during Hurricane Strain in Mississippi, Texas, and Louisiana.