Building Watson Case Study Example | Topics and Well Written Essays - 1000 words

Building Watson - Case Study Example It would be advisable to further the research in order to achieve the benefits in that future. Although able to process information much faster, innately, than a human being it would be perceived to have an advantage, and yet it gave a completely inaccurate answer to a question posed, which means that there is still something lacking in the decision making skills as to when to answer. If a human being is not certain of an answer they would likely decline to offer an answer; however, Watson opted to answer and the answer delivered with low artificial intellectual certainty was absolutely wrong. Ultimately, Watson sets precedent and encourages the further study and investment in the research and development of these technologies. The unpredictability and sense of choice that human beings possess is still something that cannot be achieved synthetically (Shih, 2012). Computers possess none of the emotional motivations of humanity, at least not in this case or technology level, these infl uences create the ethical, logical, and moral uses of our knowledge and thought. There is a dynamic nature to human thought, organic thought, which has yet to be captured within the programming of artificial intelligence and computer technologies. ... on is a sophisticated computer and computers are beneficial for their ability to compute, calculate, retrieve, and analyze data at incredible speeds, far faster than a human brain (Shih, 2012).A trivia challenge of, both, common knowledge and specialized knowledge should be an ideal task for a computer to do decidedly well, ideally, better than any human opponent. However, there are a number of personality and psychological traits possessed by human beings that are completely irrelevant to computer intelligence, including compulsive liars to truth tellers and fair players and misdirecting ones. These traits are just a few, of what are easily, thousands of possible emotional, mental, and behavioral responses attributable to human beings; none of which are shared by artificial intelligence (Shih, 2012).Given these parameters, can a computer win a match of not only knowledge but, also, of strategy and skilled game play? Although, throughout the course of the game, Watson did quite well at answering many questions correctly, however when it gave one particular inaccurate answer that was not just wrong, it was unbelievably wrong. When asked to name the U.S. state had their largest airport named after a WWII hero and their largest city named after a WWII battle, Watson answered, â€Å"Toronto† (Shih, 2012). Toronto is not a U.S. city, in the United States at all, and has absolutely nothing to do with the questions involving WWII namesakes; the degree of wrong was surprising to designers and proved that greater study will need to be done to determine why it chose an answer so obviously incorrect and then choosing to share that answer with any â€Å"programming† common sense that allowed to think that the answer could be correct would be extremely important. Watson was

The Great Gatsby and the American Dream Essay Example for Free

The Great Gatsby and the American Dream Essay The luxury cars, ritzy parties every week that never seem to be unattended, and breezers’ (a convertible car) that always turns heads as it drives by. What more could a man want? Well the one thing he so desperately desires to have is the most unobtainable request. Gatsby’s American dream is Daisy, Daisy is a fluttery individual and sometimes isn’t the brightest bulb in the box not to mention she is married to Tom. Gatsby knew Daisy before she was married to Tom but back then things were different much, much different. Gatsby back then was a poor individual and Daisy came from money. Gatsby being a young boy fell head over heals in love with Daisy but daisy coming from money knew she would never marry the man because â€Å"rich girls don’t marry poor boys† as stated in the movie. Gatsby was completely oblivious to this fact and then left to go the military, upon returning from duty he expected to find daisy waiting for him but instead daisy was a newlywed. Gatsby’s heart was broken, but he did not stop perusing his dream. Tom and Daisy lived a life of luxury in east egg; after Gatsby went off to collage he became rather rich and moved into the house right across the lake from them. Small world wouldn’t you say?! I think not! Gatsby then tried to do everything in his power to make daisy see that he is well fit for her to come back. The parties every week, the gigantic mansion he lived in, and not to mention he kept creepy memories of Daisy and her successes. Much to Gatsby’s prevail Daisy’s cousin Nick moves in to the little house next door to him. Of course Gatsby is going to take this opportunity to get close to nick so he can finally see Daisy again. Nick finally sees a light in Gatsby and the light is hope. â€Å"Delivered suddenly from the womb of his purposeless splendor† This quote explains Nick’s previous view on Gatsby upon trying to get to know him. Nick had previously thought that Gatsby’s life was purposeless and wasteful much like Tom’s but then he realizes that everything he has done has been aimed at achieving a single goal, winning Daisy’s love. As the story progresses Gatsby gets closer and closer to finally reaching his goal of having daisy back in his life, or as it is portrayed to him. Daisy and Gatsby finally came into contact and the tea gathering Nick had at his house. There the very socially awkward Gatsby sees Daisy for the very first time and he blurts out as Daisy is trying to remember the last time she saw him, â€Å"Five years next November†. Most would think that’s extremely creepy but Gatsby truly meant it in a sentimental way showing that it has been playing on his mind ever since the day he left. When Gatsby least expects it he loses daisy for good. The green light at the end of her dock finally faded into oblivion. â€Å"So he gave that up and only the dead dream fought on† Even though Gatsby was so close to obtaining the infamous American dream the idea that the dream has a will of its own and also the suggestion that maybe what makes Gatsby special isn’t his dream but the fact he held on to it for so long while everyone else got on excepting how the world really was. It’s tragic that all his success in life and making sure he lived a life of glitz a glam was for this one girl, the girl, Daisy but never accomplished what he set out to do. All in all Gatsby didn’t get the girl and in the end he didn’t even make it out with his life but all is fair in love and war. It just goes to show that if a dream is big enough and worth wild enough a person will go to any lengths to make sure they reach it even if it mean the lost of your own life. â€Å"The American Dream† as you can see is truly unobtainable.

Cal Poly: Building for Sustainability? :: University Issues Essays

If you walk up Poly Canyon Road and take a left, crossing Brizzolara Creek, you will come to the agriculture portion of main campus. The abbotoir stands next to the bull pen and the creek. The bridge crosses a fish ladder to aid the salmon back up the creek to where they can spawn. If you continue walking you will come to a reservoir with pumps and machinery used by engineering students. On the other side of the reservoir, there is a small bird sanctuary and beyond are fields that are often full of students learning how to survey the land. Behind you a stand of trees blocks out the bustle of campus life and in front of you the fields are ringed by beautiful mountains. But this is all about to change. The abbatoir is going to be moved and the fields will become the concrete foundations of a new residential complex: Student Housing North. Student Housing North is a huge residential development that was approved and added to the Master Plan in 2001 and is projected to be completed in stages beginning in 2007. The complex will be comprised mainly of apartment style upper class housing but will also include restaurant and retail spaces. The plan is to double the number of students living on campus. The project will include two new parking structures in order to support the increase of students. A lot of controversy surrounds this aspect of the new project. The development aims to reduce traffic and congestion because 2,700 students will be living on campus instead of commuting to school everyday. But the problem is that Student Housing North is going to sit right next to Brizzolara Creek, an environmentally sensitive area, and a new bridge will have to be built to accommodate the road leading to the complex and the new parking structures which will have a negative influence on the creek. But on the other hand it will reduce the number of commuters and will create a living and learning community. The plan includes a village center with shops and dinning facilities so the inhabitants will not feel the need to drive off campus.

Dyslexia :: essays research papers

DYSLEXIA AND THE PHONOLOGICAL MODEL Over one hundred years ago, in November 1896, a doctor in Sussex, England, published the first description of the learning disorder that would come to be known as developmental dyslexia. "Percy F.,... aged 14,... has always been a bright and intelligent boy," wrote W. Pringle Morgan in the "British Medical Journal," "quick at games, and in no way inferior to others of his age. His great difficulty has been--and is now--his inability to learn to read.† (Sec 3) In that brief introduction, Morgan captured the illness that has intrigued and frustrated scientists for a century. In 2000 as in 1896, reading ability is taken as a substitute for intelligence; most people assume that if someone is smart, motivated and schooled, he or she will learn to read. But the experience of millions of dyslexics, like Percy F., has shown that assumption to be false. In dyslexia, the relation between intelligence and reading ability breaks down. Early explanations of dyslexia in the 1920s, held that defects in the visual system were to blame for the reversals of letters and words thought to typify dyslexic reading. Eye training was often prescribed to overcome these alleged visual defects. Later research has shown, however, that children with dyslexia are not unusually prone to reversing letters or words and that the deficit responsible for the disorder is related to the language system. In particular, dyslexia reflects a deficiency in the processing of the distinctive linguistic units, called phonemes that make up all spoken and written words. Current linguistic models of reading and dyslexia now provide an explanation of why some very intelligent people have trouble learning to read and performing other language-related tasks. Over the past twenty years, a consistent model of dyslexia has emerged that is based on phonological processing. The phonological model is consistent both with the clinical symptoms of dyslexia and with what neuroscientists know about brain organization and function. To understand how the phonological model works, one first has to consider the way in which language is processed in the brain. Researchers theorize the language system as a hierarchical series of modules or components, each devoted to a particular aspect of language. At the upper levels of the hierarchy are components involved with semantics (vocabulary or word meaning), syntax (grammatical structure) and discourse (connected sentences). At the lowest level of the hierarchy is the phonological module, which is dedicated to processing the distinctive sound elements that constitute language.

Money Can Buy Happiness

Can money buy you happiness? It is a classical debate, sparked by the left-wing communists and religious leaders who suggest that a person can live a full life without the pursuit of money, and instead one must look to a more spiritual existence above the material desires. It is perhaps conceivable in a century gone by where people grew all their food and believed in witches, that a human could forge a fulfilling existence without the need of money to satisfy our desires. However in today’s society money can not only buy happiness, but is a major factor for happiness.Findings by the Institute of Economic Affairs show that happiness levels correlate with the amount of wealth a person accumulates. And, in contrast to popular belief, it does not level off when the assets reach a certain threshold. Money enables us to buy goods and services that we want. When we satisfy these wants we feel fulfilled, happy and pleased because we as humans love getting what we want. Money can give us experiences and opportunities that we would otherwise never be able to have. It can open doors to elite schooling, worldwide trips and making a difference in the world via charity.Money allows us to live a carefree, happy life because we don’t have financial strain. Money makes the world go round because it buys happiness, that’s why we spend hours a day slaving away to earn it. It is the key that unlocks the door to happiness. Humans have material needs and money provides the ability to satisfy these tangible needs and wants. Satisfying the want for a new dress or the need for medicine brings on the psychological state of happiness because we have satisfied those desires.The dress you bought from that exclusive store helps you to be confident and happy and the medicine helps cure a loved one. Have you ever felt left out because you see something you want, but can’t afford it? Perhaps all of your friends have the latest iPhone and you’re stuck with you r parents old embarrassing Nokia brick from 2001 because you can’t afford an iPhone. Money can buy that iPhone and can help you feel included consequently bringing on joy and happiness. Ever gone without the basic necessities, electricity, clothing or water? Money buys them too.It helps improve your standard of living. From luxury items to everyday basics money permits us to experience happiness through consumerism and the act of satisfying our needs and wants. It is the experiences and opportunities that come with money that make you happy. Money pays for the trip that lets you experience a new culture, a new cuisine or helps establish lifelong friendships. It is sometimes the memories in life that you find more happiness in than material goods. The happy memories that money buys. Perhaps you find happiness in charity work.Why devote a few hours of your time when you can enrich someone with the power of money? They then have the opportunity to rebuild their lives from the mo ney you give them and increase their living standards and happiness. Making a donation to charity not only helps others, it can make the giver mentally tougher, physically stronger and more popular, researchers from Harvard University have found out. Elite schooling and university offer endless opportunities for an individual to become an educated, well rounded and valued member of the community.It opens doors to exclusive jobs and bigger bank accounts. Success brings satisfaction and contributes to your overall happiness as life’s doors are always open to you. You are not closed off from potential opportunities that may arise. As we all know elite schooling and university doesn’t come for free, money pays for the education and opportunities that come with it. Without travel, charity and education life would be boring, bland and unfulfilling, money gives us those experiences and prospects that we all look forward to. Money offers a carefree lifestyle.With big banks acc ounts you don’t have to worry about paying rent, mortgages, school fees, health care and life’s other expenses. For someone who does not have a moderate amount of money these are stressful issues they have to deal every time they go to their letterbox. Stress can affect both your body and your mind, people can become exhausted, sick and unable to focus. It is the complete reverse of happiness. For someone who is better off financially bills occupy much less of their time and thus stress is eliminated from their lives.Home life can be miserable and tense when money is scarce. Couples bicker on average 2,455 times a year and of that number issues of money equate to 315 arguments. Money buys security and an un-troubled existence, money relieves financial stress and thus helps increase happiness. If someone was to offer you a million dollars, no strings attached, would you accept it? Chances are you would, and you would be happy about it because money can buy happiness. In life we have the option to live how we want, no one forces us to live a consumerist lifestyle.We choose to. You know there must be a connection to money and happiness. If there weren’t, no one would work for that lucrative promotion, perhaps no one work at all. Why would we spend all our lives pursuing it? For those living in third world countries that may be happy, it is unfortunately because it’s a case of they can’t miss what they’ve never had. Our society has made money a factor of happiness and I don’t hear anyone complaining. If money can’t buy you happiness then you are not spending it right.

Youth Cultures in Britain in the 1960s essays

Youth Cultures in Britain in the 1960's essays The term to define consists of two words with different meanings. Whereas the term Youth is clear to everybody, we firstly have to define what aspects the word Culture deals with. Die Kultur einer Gruppe oder Klasse umfaßt die besondere und distinkte Lebensweise dieser Gruppe oder Klasse, die Bedeutungen, Werte und Ideen, wie sie in den Institutionen, in den gesellschaftlichen Beziehungen, in Glaubenssystemen, in Sitten und Bruchen, im Gebrauch der Objekte und im materiellen Leben verkrpert sind.(1) That means culture is the way people act and behave after experiencing the way of living in their specific social class. We can consider that during their childhood working-class youths especially get to know all ideologies and values of working-class culture. That is very important in terms of forming groups and gangs where members have the same behaviour and values. Furthermore A. Cohen utters Menschliche Handlungsweisen hngen von der Art der Probleme ab, die jeder bewltigen muß.(2) These problems differ from one class to the other, which means a person who lives in the working class has to deal with other problems than an upper class person. Every society is built up of a variety of cultures, e.g. working-class culture and upper-class culture, which each have certain subgroups and subcultures. The Youth Cultures in post-war Britain developed in the working class. After childhood they tried to invent or in some way change their origin culture. Due to that fact we can conclude that Youth Cultures are a subculture of working-class culture. Downes puts forward the thesis that Subkulturen [sich] zusammenfinden, um kollektiv erfahrene Schwierigkeiten zu lsen.(3) Working-class youth had common problems and difficulties therefore they got together and tried to raise the attention of society for their conflicts. How tw...

American History American Imperialism Essays

American History American Imperialism Essays American History American Imperialism Essay American History American Imperialism Essay American reasoning to interventionism Alexander Tribunal HISTORIES Professor: Andrew Johnston TA: Emily Cough In the late 1 asss, at the turn of the 20th century, European empires controlled around 60% of the globe. The decaying Spanish and French empires had relinquished most of their Imperialist goals to control more overseas territories and were left with the remains of what they could hold onto. The British Empire however was still going strong and as the saying went: The sun never sets on the British Empire. But even then, in the sasss, he presence of European Imperialism began to diminish and a new player would enter the game of Imperialism and Jingoism. That player was the United States; consequently it was established as a nation in 1776 after seceding from the British Empire. The IIS originally had the goals of being a neutral/isolationist State; not interfering in what the general public detested about foreign imperialism. But what had changed? In the course of the next 50-60 years, the US would undertake a major foreign policy shift and steer towards the policies of Imperialism and American Exceptionalness, where mom historians argue that the founding fathers had not planned the Lignite States to pan out. This essay discusses the effects of the most important rallying cry for US policy before World War One: The infamous March of the Flag speech, as presented by Senator Albert Beverage. It was the words and ideas behind the speech which helped rally many Americans to support Jingoism under Roosevelt presidency. This culminated in the acquisition of the former Spanish territories of the Philippines, Cuba, and Puerco Rice and Guam among many other islands. With Beverages speech influencing the annexation and governance of regions which were unfit for self-rule, the United States became the new great Imperialist power; replacing the United Kingdom as the vanguard of freedom and civilization. To begin, we must analyze the foundations of Senator Beverages speech and highlight the points made to justify American intervention in Latin America and Southeast Asia/Pacific. The March of the Hag speech was delivered to the public in September 1 898, just a month after the US had defeated the Spanish Empire in the Spanish-American War. The end result was the transfer of Puerco Rice, Guam and the Philippines over to American administration. Beverages speech comes into play here; as these colonies were swapped over to another Imperial power, one that was beginning to change its foreign policy and start the role of the worlds policeman. This also marks Beverages use of words in his speech that promoted justifications for Americas interventionist attitudes. And, regardless of this formula of words made non for enlightened, self-governing people, do we owe no duty to the world? Shall we turn these peoples back to the reeking hands from which we have taken them? Shall we abandon them, with Germany, England, Japan, hungering for them? Shall we save them from those nations, to give them a self-rule of tragedy? 1. The Jingoist policy that Beverage was promoting in his speech was US foreign policy; at the time still strongly influenced by the Monroe Doctrines. The document granted the LISA apparent rights to intervene in an Latin American state that was being manipulated by European powers. It WA! Clear that the US considered Latin America in its sphere of influenced, and it was not to be meddled with by foreign powers. However, for the most part u until the Spanish American War, the United States was generally isolationist. Essentially what happened was the governments policy to build a strong international presence through military strength, capitalism and the drive to impose the democratic, civilizing mission across from the Americas over to the Pacific/South East Asia. In other words, this foreign policy became known as Jingoism4. It emphasized aggressive foreign policy, with strong nationalist/patriotic belief; and as a result, there was modest opposition to it such as the Anti-alienists Leagued. However, the public was made to live that there was justification behind the US annexing the Philippines, Cuba, Puerco Rice and Guam; as it fell into the principles of American Exceptionalness. This brings us to the second point behind Beverages speech which deals with why exactly was the US so interested in administering rule i those areas gained by defeat of Spain. The acquisition of the Philippines, Guam, Cuba and Puerco Rice were of mass importance to the United States. Was a leading factor in Beverages speech, where he discussed the riches of natural resources and capitalist interest in the countries. The Latin American and Asian countries were quite lucrative in terms of wealth to capitalists, HTHÂ ± was because LOS business interests were threatened (bananas, tobacco, coffee, cotton). This argument ties in with Albert Beverage?s speech, where he points out that American economic strength must be bolstered through the annexation and administration of the aforementioned nations while maintaining a strong military presence around the world with naval bases in key strategic locations. For example as of 2003; the US Armed Forces have bases in over 36 countries across the globe. The relation of economics ties with military principles greatly in what Beverage was attempting to put out. The US is able to station forces in military bases to monitor foreign powers under the guise of interventionism or spreading democracy; then it would bit clear the US government would have an upper hand at coming out as the number one player on the international scale of politics. As Beverage quote: in segment 27; So Hawaii furnishes us a naval base in the heart of the Pacific the Latrines another, a voyage further on; Manila another, at the gates of AsiaAsia, to the trade of whose hundreds of millions American merchants, manufacturers, farmers, have as good right as those of Germany or France c Russia or England; Asia, whose commerce with the United Kingdom alone amounts to hundreds of millions of dollars every year; Asia, to whom Germany looks to take her surplus products; Asia, whose doors must not be shut against American trade. Within five decades the bulk Of Oriental commerce will be ours7. This meant that Beverage strongly desired America to soar above in monopolizing trade and the world markets. He believed the US had the ability and resources to conduct a campaign in order to branch out to foreign markets and the vast untapped riches that waited. To sum it up, the US would head towards an increasingly capitalist mentality but the militaristic and mission to civilize/teach the world the American way would another factor in why the foreign policy became so increasingly interventionist in the 20th century and the present. To come to the final pool behind this essay, Beverages speech has touched upon the numerous underlying interests the US had in those certain regions such as American Exceptionalness, Jingoism, the hunger for stronger economy and military might overshadowed what might be one of the most powerful factors in explaining the foreign policy shift. Beverage came to state in The March of the Flag that the people who inhabited the Philippines, Cuba, Puerco Rice an Guam among many others, were in fact incapable of self-rule. Why was HTH! Idea put forth by Beverage and many other American politicians of their dab This was a direct result of the ideology which IIS politicians put forward to the American public known as American Exceptionalness8. Essentially, this theory put the IIS in a position where the nation itself was defined as unique In history. It also promoted an American centric point of view, ones that placed certain values pertaining to the USA such as liberty, egalitarianism, free market, consumerism at the focal points. How did this tie in with the March of the Flag speech? Exceptionalness was a strong fundamental belief of Albert Beverage; and his idea Of administering civilization to the newly acquired colonies was actually in fact a play on extending the hand of American centric lifestyles. It was Beverages belief (among many other politicians, and citizens) that the United States had its duty to extend American values/lifestyles to the rest of the world by means of capitalism. In relation to my first point where the US was beginning to take the route of increasing militaristic might and taking on the role of the worlds policeman; i can safely be said this same ideology was echoed by the British Empire. The two nation-states had a similar empire building policy which relied on spreading their version of civilization to colonial acquisitions. The phrase here Beverage uses the word incapable of self-rulel O, was basically a plop: to get inside the heart and minds of the average American in order to instill a justification for spreading the American way across the globe (of course, the average American was not as educated/back in those times, where political motives required more subtle approaches to justify certain policy maneuvers). In all, the explosion of a new American culture and the ideals of Exceptionalness matched quite well with the elimination of isolationist foreign policy; all of which ushered in a new American government; one which was increasingly internationalist. To conclude the effects of Senator Albert Beverages March of the Flag speech; the issue surrounding the drastic change in US foreign policies became applied to the governance of new territorial acquisitions. In the long run, the foreign policy of the United States became increasingly interventionist; especially in areas of interest. This enabled the shift to become much stronger in the years to come; as evidenced by American intervention in World War One and the post-World War Two role America played, squaring off against the Soviet Union in a garn f world domination. However, this being said, Beverages speech only prompted a proto interventionist policy (it was not as clear cut as it would be later on). Beverage only believed in the glory of the United States, the image of the duty of the nation to protect freedom and establish democracies style( after American Exceptionally point of view. Also the interests of capitalist corporations in certain areas were also touched upon by Beverage, where HTH fully supported the economic growth of the US by opening up trade with LATA American and Asian markets.

How to Make Biodiesel From Vegetable Oil

How to Make Biodiesel From Vegetable Oil Biodiesel is a diesel fuel that is made by reacting vegetable oil (cooking oil) with other common chemicals. Biodiesel may be used in any diesel automotive engine in its pure form or blended with petroleum-based diesel. No modifications are required, and the result is a less-expensive, renewable, clean-burning fuel. Heres how to make biodiesel from fresh oil. You can also make biodiesel from waste cooking oil, but that is a little more involved, so lets start with the basics. Materials for Making Biodiesel 1 liter of new vegetable oil (e.g., canola oil, corn oil, soybean oil)3.5 grams (0.12 ounces) sodium hydroxide (also known as lye). Sodium hydroxide is used for some drain cleaners. The label should state that the product contains sodium hydroxide (not calcium hypochlorite, which is found in many other drain cleaners).200 milliliters (6.8 fluid ounces) of methanol (methyl alcohol). Heet fuel treatment is methanol. Be sure the label says the product contains methanol (Iso-Heet, for example, contains isopropyl alcohol and wont work).Blender with a low-speed option. The pitcher for the blender is to be used only for making biodiesel. You want to use one made from glass, not plastic because the methanol you will use can react with plastic.Digital scale [to accurately measure 3.5 grams (0.12 ounces)]Glass container marked for 200 milliliters (6.8 fluid ounces). If you dont have a beaker, measure the volume using a measuring cup, pour it into a glass jar, then mark the fill-line on the out side of the jar. Glass or plastic container that is marked for 1 liter (1.1 quarts)Widemouthed glass or plastic container that will hold at least 1.5 liters (2-quart pitcher works well)Safety glasses, gloves, and probably an apron You do not want to get sodium hydroxide or methanol on your skin, nor do you want to breathe the vapors from either chemical. Both chemicals are toxic. Please read the warning labels on the containers for these products. Methanol is readily absorbed through your skin, so do not get it on your hands. Sodium hydroxide is caustic and will give you a chemical burn. Prepare your biodiesel in a well-ventilated area. If you spill either chemical on your skin, rinse it off immediately with water. How to Make Biodiesel You want to prepare the biodiesel in a room that is at least 70 degrees F because the chemical reaction will not proceed to completion if the temperature is too low.If you havent already, label all your containers as Toxic- Only Use for Making Biodiesel. You dont want anyone drinking your supplies, and you dont want to use the glassware for food again.Pour 200 milliliters methanol (Heet) into the glass blender pitcher.Turn the blender on its lowest setting and slowly add 3.5 grams sodium hydroxide (lye). This reaction produces sodium methoxide, which must be used right away or else it loses its effectiveness. (Like sodium hydroxide, it can be stored away from air/moisture, but that might not be practical for a home setup.)Mix the methanol and sodium hydroxide until the sodium hydroxide has completely dissolved (about 2 minutes), then add 1 liter of vegetable oil to this mixture.Continue blending this mixture (on low speed) for 20 to 30 minutes.Pour the mixture into a widemouthed jar. You will see the liquid start to separate out into layers. The bottom layer will be glycerin. The top layer is the biodiesel. Allow at least a couple of hours for the mixture to fully separate. You want to keep the top layer as your biodiesel fuel. If you like, you can keep the glycerin for other projects. You can either carefully pour off the biodiesel or use a pump or baster to pull the biodiesel off of the glycerin. Using Biodiesel Normally, you can use pure biodiesel or a mixture of biodiesel and petroleum diesel as a fuel in any unmodified diesel engine. There are two situations in which you definitely should mix biodiesel with petroleum-based diesel: If you are going to be running the engine at a temperature lower than 55 degrees F (13 degrees C), you should mix biodiesel with petroleum diesel. A 50:50 mixture will work in cold weather. Pure biodiesel will thicken and cloud at 55 degrees F, which could clog your fuel line and stop your engine. Pure petroleum diesel, in contrast, has a cloud point of -10 degrees F (-24 degrees C). The colder your conditions, the higher percentage of petroleum diesel you will want to use. Above 55 degrees F, you can use pure biodiesel without any problem. Both types of diesel return to normal as soon as the temperature warms above their cloud point.You will want to use a mixture of 20% biodiesel with 80% petroleum diesel (called B20) if your engine has natural rubber seals or hoses. Pure biodiesel can degrade natural rubber, though B20 tends not to cause problems. If you have an older engine (which is where natural rubber parts are found), you could replace the rubber with polymer parts and run pur e biodiesel. Biodiesel Stability and Shelf Life You probably dont stop to think about it, but all fuels have a shelf life that depends on their chemical composition and storage conditions. The chemical stability of biodiesel depends on the oil from which it was derived. Biodiesel from oils that naturally contain the antioxidant tocopherol or vitamin E (e.g., rapeseed oil) remain usable longer than biodiesel from other types of vegetable oils. According to Jobwerx.com, stability is noticeably diminished after 10 days, and the fuel may be unusable after two months. Temperature also affects fuel stability in that excessive temperatures may denature the fuel.

Occupational Safety and Health as a profession Essay - 1

Occupational Safety and Health as a profession - Essay Example Occupational and environmental health and safety nurses, safety professionals, industrials hygienists, occupational health psychologists and occupational medicine physicians, are some of the occupational health and safety professionals. Other professionals that form a wider team of occupational safety and health multidisciplinary include toxicologists, human resource specialists, ergonomists, industrial or organizational psychologists and epidemiologists. These professionals have been accredited through certain specific procedures to practice occupational safety and health profession or offer services under occupational safety and health sector in accordance with the Regulation Act. Currently, there are no standards specific for occupational safety and health professionals. Work safety in almost all areas of the economy was worsened by the economic boom and the associated turnover in the labor that took place during the World War II (Fairris 187-203). However, as long-term forces reasserted themselves after 1945, accident declined again. In addition, nearly all powerful labor unions, after the World War II, played an increasingly fundamental role in safety at workplace. There were also increasing injury rates that were brought about by the economic expansion during the 1960s. It is important to note that OSHA took pre-eminence once the Massachusetts as a state began the inspections of factories, after the industrial revolution. Laws were put in place to safeguard the state workers and ensure their safety in 1913, thus, they were ratified in the constitution. This implies that the employers were responsible for the injuries accrued by their employees during working hours. In subsequent years, in 1969, the Department of Mines and Minerals was effected to cover the employees a year before the whole industry was covered by the OSHA act. Due to this increase and the increasing political pressures, the Congress, in 1970, was forced

Dentify the basic provisions of the Sarbanes-Oxley Act that Essay

Dentify the basic provisions of the Sarbanes-Oxley Act that specifically deal with ethics and Independence and research how this Act has affected auditors since it was established in 2002 - Essay Example An example is the collapse of Enron. Unethical conduct on the part of Corporate CEOs and Audit Firms was responsible (Rezzy, 2007). To avoid a repeat of the same, the Sarbanes-Oxley Act was passed to instill ethics and instigate independence auditors. The essay covers specific provisions of the statute intended to promote ethics and independence to demonstrate how the act has affected auditors. Section 101 created the Public Company Accounting Oversight Board as an independent body with the onus to monitor and regulate the activities of auditors (Freeman, 2009). The board has since ensured that auditors comply with the provisions of the legislation as well as comply with the code of ethics for persons in the auditing business. Since the introduction of the Board, it is believed that audit malpractice has reduced due to the stiffer penalties that threaten implicated firms as a result of the Board’s investigations according to Romano (Romano, 2005). Title III from section 301 to 308 endeavors to promote ethics by obligating company executives to be personally responsible for the financial reports of the corporate, whether quarterly, semi-annually or annually. To avoid malpractice, CEOs and other chief management staff are required to inspect and pass as accurate the financial statements of the company before they are released. This in turn makes the officers personally liable if any misstatements are made that could be misleading as to the financial soundness of the company. Green states that any officer required to append signature on a financial report must only do so after doing due diligence using their knowledge to make sure that everything stated therein is true to avoid personal liability (Green, 2004). This has had the effect of reducing fraud as corporate executives struggle to ensure that financial reports are as accurate as

Not waving but drowning Essay Example | Topics and Well Written Essays - 1000 words

Not waving but drowning - Essay Example In each of these states, whether European or American, people were experiencing a great deal of alienation and isolation as a result of these tremendous changes. Perhaps it is not surprising, then, to find the desolation and isolation of this period reflected as a major theme in the poetry created during this period such as â€Å"Not Waving but Drowning† by Stevie Smith. The isolation is almost overwhelming in Smith’s poem as she begins with the desolate lonely cry of a man that nobody hears. Although he is introduced as being dead, â€Å"Nobody heard him, the dead man, / But still he lay moaning† (1-2), making himself known to someone. This introduction presents several possibilities as to his true condition. The first is that the man is only symbolically dead, dead on the inside, and so is physically alive and able to moan in his continued pain and loneliness. He could also be so close to death that there is no possibility of saving him before he’s gone, and he’s moaning in anticipation of the inevitable. Another possibility is that he is actually dead, but there remain a few possibilities as to his continued moaning. The pain and anguish of his death might have been too much for him to bear and thus he is still moaning even after death. Finally, the suggestion that nobody heard him invokes the sense of the ghostly, so that perhaps the man is moaning in the form of a ghost, attempting to warn those who can hear of the dangers of allowing individuals to become too isolated from society. The words that Smith provides him in the second portion of this stanza further emphasize the sense of isolation and failed attempts at connection. The dead man says, â€Å"I was much further out than you thought / And not waving but drowning† (3-4). This indicates that whether he was alive or dead, this man never felt as close to his fellow humans as they perceived him to be and, as a result, they were unable to recognize the signs of distress he was sending

Business as a form of premeditation and the expectations Essay

Business as a form of premeditation and the expectations - Essay Example This research will begin with the statement that going through the state of a business is one of the contemporary and most recognized ways through which modern-day business people recognize the strengths and weaknesses of a certain business. The business under review, in this case, is a small business, a wine shop. It is important to go through the general situation that the business thrives in an effort to understand the best way to manage it. The size of the business is generally small and deals with the sale of wines. The large part of the business can be sighted after the first entrance to the shop as it does not have multiple doors except one leading to the storage room. There are racks present in the premises where the wines are stored until customers come to purchase it. The business is in an open place and thus there is sufficient lighting. Moreover, there are also bulbs in the premises since the sale of wine goes on to the night. There are two assistants who assist in the or dering and the arrangement of material in the premises. In addition, there is a telephone for the customers who might want to book a certain brand of wine. The business in question is rather thriving in an environment that has a lot of active customers. This is got from the manner in which it has managed to have a steady flow of sales per unit. This one of the aspects that keeps a business alive and conformation with the environment generally comes in as another positive chip. The breakeven point is recognized as the point in business where the revenue that the company makes is equivalent to the amount of expenses it incurs. In the stated business, the breakeven point is high. This is from the fact that the company had to sell whole 71000 units in an effort to have the small margin that exists. The margin between the revenue and the expenses is minimal at 30 for every unit and this sets in as a risk for making deficits to the company rather than the large profits that every business speculates. The business itself is in a proper category to buy even more alcohol; however, the amount of money that it makes is not sufficient enough to make a large investment such as the acquiring of another staff member. Having seen the shallow margin that the business makes has implications for the business. These implications come in as both positive and negative regarding the time it takes. If the business has short term goals, the small margins cannot come in handy in their fulfillment. However, in the accomplishment of long term goals for the business, this can work as cumulative amounts of money would get retained in the business after deduction of the general fixed costs that are the rent, staff costs, telephone and others. Going through the profitability of the business is another major aspect to bring in when identifying the actual stature of the business (Barrow, 2011,57) Looking at the sales that the business makes, it is clear to state that the profitability of the business is in line with what a small business of the sort. This is from the fact that a business entity such as the wine shop managing to have 20 Euro profit margins per unit is great. When that amount of money is multiplied with the amount of units sold in a year, the total exceeds initial capital investment by far. Understanding the liquidity of the company is another aspect that a company ought to consider when going about the daily running (Blackwell, 2008, 75). This is from the fact that for a business to keep on running, it is important to ensure that in case of anything the amount of money lost is not much. The business is well set in this from the previous fact stated regarding the amount of money that the business makes in a whole year. The wine industry is one industry that is always up from the fact that it does not have seasons and is not affected by factors such as weather. If the

Implementation of a COP program based on the scenario given Assignment

Implementation of a COP program based on the scenario given - Assignment Example There is also a citizen’s patrol project which will help the police with monitoring areas where there may not be a patrol at that moment so help can be called in immediately. An outline and overview of the project is given in this paper as to how it will be implemented. Introduction This is a proposal memo to address the problems at the Anytown Shopping Mall in our city which has had a 75% increase in crime and robberies over the years 2009 to 2011. In light of the fact that it is determined that homeless people have set up camps in parking lot areas where there is very little lighting installed, and that there have been numerous robberies conducted in parking lot sections, the Anytown Police Department is designing a project to help with cutting down crime and restoring a safe environment for our citizens to be able to shop and work safely in, and around, the Anytown Shopping Mall. It is our plan to bring back businesses to this area as a number of the shopping mall businesse s have left recently because of the unsafe conditions for both workers and customers (Class information 2013). The community-oriented policing program being created is called ANYTOWN ANYTIME FREEDOM SHOPPING program which will address several issues: eliminating transit camps in parking lots, a system of patrols that covers all sections of the parking area and in the mall as well, a protection system for workers and customers of the mall and finally, a determination of what public works projects must be developed, such as a new lighting strategy, for all areas of the parking infrastructure (Class information 2013). 1. The social forces that exist for this problem are that there are numerous homeless people who are camping out in the poorly lit areas of the shopping mall’s parking sections, particularly in underground parking. This creates an unsafe hazard for those workers who must come in early and leave late at night (Craven 2009). For shoppers, the danger is the high chanc e of being robbed, particularly when carrying packages. Aside from the obvious dangers from robberies, muggings, and potential car jackings, the areas where there are camps are very unsanitary, particularly as there are no restrooms (Dempsey & Forst 2013). It is unclear at this time whether the homeless also go into the shopping mall, when it is open, in order to use the restroom facilities. Preparation 2. The first steps in preparing for the program is to have a meeting, or several meetings, with shop owners in the mall in order to hear what incidents they have encountered, which would help in designing the plan of action (Craven 2009). This would also include those businesses which have left the area and finding out specifically what issues they had as regards conducting business in the mall. In addition to the meetings, it is also important to assess from crime reports where crimes in that area have occurred the most and what type they are (Hunter & Barker 2011). Once this inform ation has been developed, then more strategic planning can take place. 3. The social and special interest groups that should be involved in this process are the business owners in the mall, the shopping mall administration officers, any current security teams that are already in place, as most malls have their own team, and also the city manager and district representative. It is important to have reflections from all the above people and to have them

Business as a form of premeditation and the expectations Essay

Business as a form of premeditation and the expectations - Essay Example This research will begin with the statement that going through the state of a business is one of the contemporary and most recognized ways through which modern-day business people recognize the strengths and weaknesses of a certain business. The business under review, in this case, is a small business, a wine shop. It is important to go through the general situation that the business thrives in an effort to understand the best way to manage it. The size of the business is generally small and deals with the sale of wines. The large part of the business can be sighted after the first entrance to the shop as it does not have multiple doors except one leading to the storage room. There are racks present in the premises where the wines are stored until customers come to purchase it. The business is in an open place and thus there is sufficient lighting. Moreover, there are also bulbs in the premises since the sale of wine goes on to the night. There are two assistants who assist in the or dering and the arrangement of material in the premises. In addition, there is a telephone for the customers who might want to book a certain brand of wine. The business in question is rather thriving in an environment that has a lot of active customers. This is got from the manner in which it has managed to have a steady flow of sales per unit. This one of the aspects that keeps a business alive and conformation with the environment generally comes in as another positive chip. The breakeven point is recognized as the point in business where the revenue that the company makes is equivalent to the amount of expenses it incurs. In the stated business, the breakeven point is high. This is from the fact that the company had to sell whole 71000 units in an effort to have the small margin that exists. The margin between the revenue and the expenses is minimal at 30 for every unit and this sets in as a risk for making deficits to the company rather than the large profits that every business speculates. The business itself is in a proper category to buy even more alcohol; however, the amount of money that it makes is not sufficient enough to make a large investment such as the acquiring of another staff member. Having seen the shallow margin that the business makes has implications for the business. These implications come in as both positive and negative regarding the time it takes. If the business has short term goals, the small margins cannot come in handy in their fulfillment. However, in the accomplishment of long term goals for the business, this can work as cumulative amounts of money would get retained in the business after deduction of the general fixed costs that are the rent, staff costs, telephone and others. Going through the profitability of the business is another major aspect to bring in when identifying the actual stature of the business (Barrow, 2011,57) Looking at the sales that the business makes, it is clear to state that the profitability of the business is in line with what a small business of the sort. This is from the fact that a business entity such as the wine shop managing to have 20 Euro profit margins per unit is great. When that amount of money is multiplied with the amount of units sold in a year, the total exceeds initial capital investment by far. Understanding the liquidity of the company is another aspect that a company ought to consider when going about the daily running (Blackwell, 2008, 75). This is from the fact that for a business to keep on running, it is important to ensure that in case of anything the amount of money lost is not much. The business is well set in this from the previous fact stated regarding the amount of money that the business makes in a whole year. The wine industry is one industry that is always up from the fact that it does not have seasons and is not affected by factors such as weather. If the

Sexual offender registration laws Term Paper Example | Topics and Well Written Essays - 2250 words

Sexual offender registration laws - Term Paper Example The paper tells that the origins of Megan's Law can be traced from parents/guardians right to know if a dangerous sexual predator moves into their neighborhood and to protect communities from sexual offenders. Megan was kidnapped, raped and murdered by a dangerous sexual offender living in their neighborhood. Her parents circulated a petition demanding immediate legislative action. The petition amassed over 400,000 signatures, and the law was passed in 89 days. In accordance with Megan's Law, federally known as The Jacob Wetterling Act in 1994, amended in 1998 with Section 115 of the General Provisions of Title I of the Departments of Commerce, Justice and State, the Judiciary, and Related Agencies Appropriations Act (CJSA) provide that states are required to register sex offenders and perform community notification. However, each state differs in terms of how it administers the information/methods of registrations. Lavenson notes that bill stipulates sex offenders to be prohibited f rom living within 1,000 feet of a school, day care center, church, and anywhere where children are known to congregate, including parks, playgrounds, and bus stops and therefore, is not a practical solution. Under Georgia law, sec 5, revised paragraph 10, of sexual offenders; classification; change and enact provisions, sex crimes include: child sexual abuse, child molestation, aggravated child molestation, to entice children for indecent reasons, to sexually exploit children, transports a child to a location in order to molest the child., Sexual exploitation of a child downloading pornographic material of persons under the age of 18, child pornography, sexual battery, aggravated sodomy, rape and even kidnapping of a minor.(5) http://www.legis.ga.gov/Legislation/20092010/106632.pdf Regulations regarding sexual offender registration The Georgia Bureau of Investigation (GBI) is responsible for registration of sexual offenders in accordance with O.C.G.A.  §Ã‚  42-1-12. Sec 20(a) prov ides that a sexual offender is an individual  who has been convicted of a criminal offense against a minor or any dangerous sexual offense under the laws of another state or territory, under the laws of the United States, Uniform Code of Military Justice, or in a tribal court of a criminal offense against a minor or a dangerous sexual offense. The term sexual offender is a broad term, with sexual predator being used to describe a more severe physical or repeat sexual offense (Travis, Jeremy). Sexually dangerous predator is defined in sec 21(a) as a person who was designated as a sexually dangerous predator between July 1, 1996, and June 30, 2006; or a person who is determined by the Sexual Offender Registration Review Board to be at risk of perpetrating any future dangerous sexual

Man in the Crowd Essay Example for Free

Man in the Crowd Essay The epigraph at the beginning of â€Å"The Man in the Crowd† brings up the interesting question of what it really means to be alone. While the actual definition of alone is â€Å"quite by oneself, unaccompanied, solitary,† (â€Å"Alone†) the story, through the narrator’s thoughts and the observations of the nameless man in the crowd, can serve as a different perspective on being alone if applied beyond the situation in the tale. The epigraph says how terrible it is to never be alone, and the story serves as a metaphor for Poe to comment on how he views someone’s ability to actually be apart from the crowd. The story goes to show how social norms, thoughts of others, and inherent desires limit someone from ever being truly alone. Poe seems to believe that people are always a part society and are never fully separate and that possibly no one actually wishes to escape the crowd entirely. The thoughts of the narrator of the story represent how thoughts of others create unknowing connections that make it so no one is alone. The narrator serves as a direct example of the opinions people form while viewing others. He â€Å"regard[s] with the minute interest the innumerable varieties of figure, dress, air, gait, visage, and expression of countenance† (Poe, 233) of the individuals in the crowd. If he sees a person with â€Å"a filmy dimness of eye† and talking with â€Å"a guarded lowness of tone in conversation† then he assumes he is a gambler that â€Å"prey[s] upon the public† (Poe, 234). He uses the aforementioned characteristics to determine what type of person he or she is and ranks them on a â€Å"scale of what is termed gentility† (Poe, 234). Each person is objectified in the narrator’s mind upon observations of their clothing, cleanliness, and facial expressions. The narrator thinks that he can guess the occupation and lifestyle of a person by simply seeing them for less than a second. He then forms opinions of the people he sees and they have no way of knowing that he has those thoughts. Although, a person is unaware of the thoughts of others, thoughts create a connection between people. The narrator is connected to the people in the crowd because he is thinking about them. They are oblivious of the connection, but because of the narrator and his thoughts, they are, in a sense, there with someone else. The mysterious man that the narrator sees demonstrates that even when alone, it is impossible to be alone in the true sense of the word. Even in the large crowd, the people who are not walking or talking with anyone still combine with everyone else to make â€Å"continuous tides of population† (Poe, 233). They, although not interacting with anyone else, are always a part of society. The man that intrigues the narrator is a loner that, although unique, is still a part of the crowd. The man fits into no set group of people that the narrator names because of his contradictory and confusing appearance. His clothes were made of â€Å"linen, although dirty, (with a) beautiful texture† (Poe 236), suggesting that he is wealthy but does not care enough to look presentable. The â€Å"idiosyncrasy of (his) expression† (Poe, 234) is the greatest contributing factor to why the man cannot be grouped. The man does not fit any of the social norms of society, yet he combines with all of the people to form the crowd. Poe might be suggesting that even though the man in the crowd believes he is alone, he has the narrator following him and thinking about him. Since he is occupying the narrator’s mind for so long, the man is making a bigger difference in the crowd than he thinks he is. Poe proves through the mysterious man that even when alone, a person is making a difference and influencing his or her surroundings. The narrator’s feelings towards the crowd and the man’s anxiety when he is not within a crowd represent the need the narrator has to be a part of it. The narrator having been sick for a few months is craving the sight of others and is filled with â€Å"a delicious novelty of emotion† (Poe, 233) when he sees the crowd. The narrator’s joy at seeing others shows his unspoken desire to be a part of the outside world. He is drawn into the crowd because of the innate wish to be involved with others and his natural curiosity for them. The feeling of being together with others gives him a sense of belonging a purpose. The narrator says that the man â€Å"with every mark of agitation, pursues rapidly a route which brought (them) to the verge of the city† (Poe, 238) because â€Å"he refuses to be alone† (Poe, 239). The man wants to be surrounded by people and shows visibly that it is upsetting to not be so. Poe could be using the man’s agitation as a symbol of how the narrator subconsciously feels about the crowd. The mysterious man represents how the narrator desires to be with others and feel a sense of belonging to the crowd. Poe’s definition of being alone in the story, if applied in more general terms, seems to be if a person can actually separate from others in society. From the narrator and his pursuit of the mysterious man, it can be concluded that Poe does not believe that the separation is possible. It is the thoughts of others and the influences of actions that make it impossible for someone to escape the outside world. But more importantly than the fact that people cannot elude the opinions and preconceptions of others, is that people want to be noticed. Making a difference and influencing something is an inherent goal for the majority of people. The combination of the inability to escape everyone else and the desire people have to be apart of a group make it impossible to be, at least in the story, alone. â€Å"Alone.† Oxford English Dictionary. Oxford University Press, 2011. Web. 13 Nov. 2011. Poe, Edgar A, and Gary R. Thompson. The Selected Writings of Edgar Allan Poe: Authoritative Texts, Backgrounds and Contexts, Criticism. New York: W.W. Norton Co, 2004. Print.

Anomalous Resistance Behavior in Bilayer Graphene

Anomalous Resistance Behavior in Bilayer Graphene Observation of Anomalous Resistance Behavior in Bilayer Graphene Yanping Liu 1,2, Wen Siang Lew 2,*and Zongwen Liu 3,* Abstract Our measurement results have shown that bilayer graphene exhibits an unexpected sharp transition of the resistance value in the temperature region 200~250K. We argue that this behavior originates from the interlayer ripple scattering effect between the top and bottom ripple graphene layer. The inter-scattering can mimic the Coulomb scattering, but is strongly dependent on temperature. The observed behavior is consistent with the theoretical prediction that charged impurities are the dominant scatters in bilayer graphene. The resistance increase with increasing perpendicular magnetic field strongly supports the postulate that magnetic field induces an excitonic gap in bilayer graphene. Our results reveal that the relative change of resistance induced by magnetic field in the bilayer graphene shows an anomalous thermally activated property. ______________________________________ Introduction: The electronic properties of monolayer graphene have been extensively studied due to its intriguing energy band structure with linear dispersion around the Dirac point and chirality exhibiting Berry phase of [1]. There is a zero-energy Landau level (LL) with four-fold degeneracy due to interactions between electron spins and valleys in the magnetic field [2-4]. Recently, bilayer graphene became a subject of intense research due to the low energy Hamiltonian of chiral quasiparticles and a Berry phase of [5-8]. It has a double-degeneracy zero-energy Landau level that incorporates two different orbital states with the same energy under an external magnetic field. The bilayer graphene with a Bernal (A-B) configuration loses some features of monolayer graphene and has a unique band structure where the conduction and valence bands are in contact with a nearly quadratic dispersion [5]. In bilayer graphene, a parabolic band structure ( ) with an effective mass m*=0.037, has been calculated by using the interlayer coupling model [9-14]. What makes bilayer graphene an interesting material for study is that the interlayer potential asymmetry can be controlled by an electric field, thus opening an energy gap between the conduction and valence bands [16-18]. Various applications for bilayer graphene are possible due to the fact that its band gap can be modulated by using an external out-of-plane electric field and chemical doping. There is intensive research on bilayer graphene under the application of a perpendicular electric field, however, experimental reports on magnetic transport properties of bilayer graphene are not as well-studied. Recent theoretical work reports on excitonic condensation and quantum Hall ferromagnetism in bilayer graphene [22]. There are interesting features in bilayer graphene due to its extra twofold orbital degeneracy in the LL spectrum, which results in an eightfold -degenerate LL at zero energy. The scattering mechanism of graphene is current ly a subject of intense research and debate. The problem of magneto-transport properties in the presence of Coulomb impurities is still an open research problem. Our understanding of the nature of the disorder and how the mesoscopic ripple effect affects the transport properties still need improvement; hence, a better understanding on the general electric and magnetic transport properties of bilayer graphene is necessary. In this paper, we have systematically investigated the charge transport properties in bilayer graphene as a function of temperature, magnetic field, and electric field. Our measurement results have shown that bilayer graphene exhibits a semi-metallic R-T property and an unexpected sharp transition of the resistance value in the temperature region 200~250K. The longitudinal resistance decreases with increasing temperature and electric field, a behavior that is markedly different from the experimental reports of monolayer graphene. Our results reveal that the energy gap in the bilayer graphene shows an anomalous thermally activated property and increases with. We have shown that this phenomenon originates from a tuneable band structure behavior that can be controlled by a magnetic field, a property that had never previously been observed in bilayer graphene. It has been shown that Raman spectroscopy is a reliable, non-destructive tool for identifying the number of graphene layers and it can be done through the 2D-band deconvolution procedure [23-25]. The Raman spectra of our graphene structure were measured at room temperature using a WITEC CRM200 instrument at 532 nm excitation wavelength in the backscattering configuration [26-28]. Fig.1a shows the characteristic Raman spectrum with a clearly distinguishable G peak and 2D band. The two most intense features are the G peak and the 2D band which is sensitive to the number of layers of graphene. The position of the G peak and the shape of the 2D band confirm the number of layers of graphene. Additionally, the number of layers of graphene can be easily distinguished from the full width half maximum of the 2D band, as its mode changes from a narrow and symmetric feature for monolayer graphene to an asymmetric distribution on the high-energy side for bilayer graphene [27]. The 2D band inset in Fig.1a shows that the Raman spectrum of bilayer graphene is red-shifted and broadened with respect to that of the monolayer graphene. Fig. 1b shows the four terminal resistance as a function of carrier-density n, and the sample shows a pronounced peak at density . Note that the sharp peak in resistance at low n is enhanced by the opening of the small energy gap owing to disorder-induced differences in carrier density between the top and the bottom layers of the flake. We have characterized the current (I)-voltage (V) characteristics of the bilayer graphene via four-terminal measurement, at different temperatures and magnetic fields. Shown in Fig. 2a are the I-V curves for bilayer graphene under the application of various magnetic fields at three different temperatures: 2 K, 200 K and 340 K. The magnetic field is applied in the perpendicular direction to the plane of the graphene. For all the temperatures and magnetic field strengths, the bilayer graphene exhibits a linear I-V curve. This implies that the graphene layer is ohmic in nature. We observed that for a fixed magnetic field, the I-V curve displays a larger gradient at higher temperature than at lower temperature. Interestingly, the gradient of the I-V curve decreases with increasing magnetic field. In our structure, the gradient of the curve corresponds to the conductivity of the graphene layer. Such temperature and magnetic field dependent behaviour of conductivity is characteristic of an intrinsic semiconductor. The decrease in the conductivity of the bilayer graphene with increasing magnetic field is attributed to the excitonic energy gap induced by the magnetic field. This conductivity dependence on the magnetic field suggests that the resistance () of graphene is a qualitative fingerprint of its band gap. In the absence of a magnetic field, the band structure of the bilayer graphene at the Dirac valley has a parabolic dispersion relation. When a magnetic field is present, the band structure is changed to a split Landau level structure [19-21]. Fig. 2(b) is an illustration of the bilayer bandgap and Landau level splitting under the influence of a magnetic field. Inset shows an optical image of the bilayer graphene with the metal contact electrodes. In Fig.2(c) we plot the resistance of the bilayer graphene, as extracted from the I-V curve, as a function of magnetic field for three different temperatures. As the magnetic field was increased in a step of 4T, the resistance increase for each step was different, resulting in a non-linear relationship between the resistance and magnetic field. Interestingly, the observed non-line relationship is markedly different from Zeeman spin-splitting theoretical model with the line relationship, where gap with a free-electron g-factor g=2, where is the Bohr magneton. This potentially indicates sublattice symmetry breaking and gap formation due to many-body correction in this LL [32-34]. This is further confirmation that magnetic field opens an excitonic gap in the bilayer graphene. The temperature dependence of monolayer graphene resistance is mainly attributed to the different scattering mechanisms: Coulomb scattering [35-36], short range scattering [37], and phonon scattering [38-39]. However, the temperature dependence of bilayer graphene resistance has not been established yet. Shown in Fig.3a are the temperature dependence of the resistance of the bilayer graphene under the application of a magnetic field 0T and 12T, respectively. The results show that the resistance of the bilayer graphene drops following non-metallic behaviour as temperature increases from 2K to 340 K. This implies that the bilayer graphene resistors have intrinsic semiconductor properties as mentioned earlier. This can be explained by the decrease in Coulomb scattering with temperature for bilayer graphene due to its parabolic band structure. For B=12T, a similar trend as B=0T is obtained in Fig 3a, where the resistance decreases with increasing temperature. However, the resistance for the entire temperature range is much larger than for B=0T. This indicates that the magnetic field opens an excitonic gap in the bilayer graphene that is thermally activated due to the Coulomb interaction ion-driven electronic instabilities [20, 31]. Ripples are a common feature of cleaved graphene because it is never atomically flat, as it is placed on a substrate such as SiO2 in the term of nanometre-scale deformations or ripples [40-42]. Despite the magnitude of the ripples being quite small, it is still believed to be responsible for the unusual transport behaviour of graphene, also susceptible to adsorbed impurities, defects and the roughness of the underlying substrate [40-43]. On the other hand, it has been shown that suspended graphene films are corrugated on a mesoscopic scale, with out-of-plane deformations up to 1 nm [44-45]. The deformation is a typically smaller than the Fermi wavelengthand these ripples induce predominantly short-range scattering. The observed height variation shows that the surface roughness beyond the atomic-level is intrinsically present in bilayer graphene. Hence, one of the interesting features of corrugation of graphene is that it offers a new experimental opportunity to study how the corrugat ion-induced scattering impacts the transport properties of graphene. It is important to mention that there is a strange sharp threshold like decrease in resistance observed above 200K. The strong temperature dependence is inconsistent with scattering by acoustic phonons. One possible explanation is that the flexural phonons confined within ripples between the top and bottom layer causes the scattering. The presence of the ripple effect exhibits local out-of-plane ripples [44]. Theoretical calculations[41,46] show that the scattering rates for interripple flexural phonons with respect to two-phonon scattering process as, where is the flexural-phonon frequency, the derivative of the nearest-neighbour hopping integral with respect to deformation, a the lattice constant, , and the mass of carbon atom [46]. For low temperatures T () , few flexural modes can be excited inside ripples (). The conductivity of the surface roughness model at the limit at low temperature is[45-46]. As the t emperature increases and typical wavelengths become shorter, short-range scattering excites the flexural phonons. For the high temperature limit, based on the above expression, we can estimate that , which yields ~100 to 1000 at T=300K. The model of quenched-ripple disorder [46] suggested that the electron scattering of the static ripples quenched from the flexural phonon disorder can mimic Coulomb scattering when at room temperature. One should also note that the model predicts stronger temperature dependence (above a certain quenching temperature of about 100K) which is close to our experimental result at about 200K. However, the ripple effect normally leads to a rapid increase in the R-T curve rather than the sudden decrease in R-T as observed for our bilayer graphene. In the absence of a theory to explain the stronger temperature dependence behaviour, we propose that the behaviour is consistent with the ripple effect interlayer scattering instead of interlayer scattering. Fig. 3b shows the schematically illustration of scattering mechanisms in bilayer graphene. For a bilayer graphene, the interlayer scattering between the top and bottom ripple graphene layer is similar to coulomb scattering with stronger dependence on temperature. The rapid decrease in R-T above 200K can be attributed to the transition between the low- and high-T limits in the interlayer ripple effect scattering. On the other hand, it was suggested that the observed strong T dependence could be explained by thermally excited surface polar phonons of the SiO2 substrate [35-38]. The SiO2 optical phonons at the substrate-graphene interface induce an electric field which couples to the carriers in graphene due to it modulating the polarizability [38-39]. However, Coulomb scattering is dominant for bilayer graphene and the substrate surface polar phonon induced field is to some extent screened by the additional graphene layers [39]. Recently it has been shown that the substrate dielectric constant plays an important role in scattering in graphene. Theoretical predictions show that for dielectric constant , Coulomb scattering dominates, while for dielectric constant , short-range scattering dominates, as Coulomb scattering is more strongly screened for materials with a larger dielectric constant. In fact, our observed behaviour is consistent with the theory suggesting that scattering from charged impurities is dominant in graphene. We introduce a relaxation-time approximation and treat the unscreened Coulomb potential as [1,5] where Q is the charge of impurities. Based on the Boltzmann transport theory, we can obtain the bilayer graphene resistivity with massless Dirac-fermions (MDF) at low energies as. For high temperature , , we can obtain the bilayer graphene resistivity as[47], where is the density of impurities per unit volume, is the permittivity of the semiconductor, and is the charge state of the impurity. This shows that the resistance of bilayer graphene limited by Coulomb scattering increases as increases and decreases with increasing temperature. Considering the above analysis, we deduce that the temperature dependence of resistance in bilayer graphene is mainly determined by Coulomb scattering. The short-range scattering is independent of temperature for bilayer graphene, as the density-of-states, the matrix element and the screening function are all energy independent. As a result of the parab olic band structure of bilayer graphene, the energy averaging of the Coulomb scattering time can give rise to the resistivity decreasing proportionality to temperature : . Based on the above discussion, we fit the measured resistance in Fig.3a by using the following model for bilayer graphene:, where and are the resistance due to the Coulomb and short-range scatterings, respectively. Fig.3b shows the relative resistance change under the biased and unbiased magnetic field as a function of temperature, and the dotted line is the fit following the equation , where is the energy gap. The opening of the energy gap due to a potential difference between the two layers and Coulomb interactions could be a cause for this. These considerations explain qualitatively why the resistance of bilayer graphene decreases with increasing temperature. Note that the relative resistance change is a strong function of temperature. At temperatures of 2Kà ¯Ã¢â€š ¬Ã‚ ­180K and 220Kà ¯Ã¢â€š ¬Ã‚ ­250K, the relative resistance strongly increases as temperature increases, indicating that an energy gap forms due to many-body correction in Landau Level. When the temperature incr eases to T >250K, the relative resistance is roughly independent of the increasing temperature; this indicates that the energy gap is mostly stable at high temperatures. On the other hand, with the temperature increase from 180K to 220K, the relative resistance dependence of temperature shows a sharp decrease, which indicates that the energy gap shows an anomalous thermally activated behaviour as a function of temperature. For zero gate voltage (i.e., neutrality point), we measured changes in longitudinal resistance as a function of applied perpendicular field B. Fig. 4a shows the four-terminal longitudinal resistance of bilayer graphene as a function of magnetic field at T= 2K at the charge-neutrality point. We have plotted the resistance per square, because it is independent of a size effect of the sample. As seen from Fig. 4a, the resistance increases nonlinearly with the magnetic field strength followed by a plateau-like phase. One should note that the plateau-like phase in Fig. 4b disappears at higher temperatures. One possible explanation is the augmented sublattice spin-splitting due to the high surface-impurity concentration of the graphene layer [18]. The origin of the nonlinear magnetoresistance increment behaviour is the splitting of Landau level that gives rise to a bandgap opening at the zero energy level [32-34]. In our measurements, we fit our results to an analytical approximation for the non-linear resistance , where is the Boltzmann constant. We found that our results are in good agreement with this equation. These considerations explain qualitatively why the nonlinear resistance increases with the magnetic field. Fig. 5 shows the resistance of bilayer graphene as a function of electric field (E) under different magnetic fields. The dependent characteristics are symmetric due to the chirality of graphene electrons when an applied electric field changes from E to E. The normalized resistance curve describes the response under the applied magnetic field in the range of B=0T to B=12T and the temperatures of 2-340K. The results demonstrate that when the magnetic field increases from 0T to 12T at low temperatures (2à ¯Ã¢â€š ¬Ã‚ ­200K) and low electric field (E), the resistance of bilayer graphene drops significantly. The larger slump in the resistance at lower temperature T=2K and low electric field as the increasing of electric field are due to Coulomb scattering by impurities, which is a strong function of temperature. On the other hand, at high temperatures (T >200K) and electric fields (E>0.01 ), the resistance of bilayer graphene show a linear decrease. This can be explained by the scatteri ng from thermally excited surface polar phonons of the substrate being screened by the additional top graphene layers [39]. This further confirms that at high temperatures, the scattering induced by the electric field on the substrate surface polar phonons is significantly screened between top and bottom layers in bilayer graphene. In our experiment, temperature and magnetic field dependence of resistance of bilayer graphene was investigated. Intrinsic semiconductor behaviour at the range of temperature is 2K-340K was observed. The strange sharp threshold-like decrease in resistance around 200K is unexpected, and we attribute it to the presence of mesoscopic ripples between the top and bottom layer. Our results reveal that the energy gap in the bilayer graphene is thermally dependent. This potentially indicates the sublattice symmetry breaking and an energy gap formation due to Landau Level splits. The obtained results are important for the better understanding of magnetic field induced high resistance and provide indications of a theoretically predicted magnetic field induced excitonic gap. Acknowledgements Y. L would like to thank Prof. Wang and Prof. Yao for his useful discussions. This work was supported in part by the NRF-CRP program (Multifunctional Spintronic Materials and Devices) and the Agency for Science, Technology and Research (A*STAR) SERC grant (082 101 0015). The authors thank Sun Li and Li Yuanqing for their assistance in experimental measurements. Experimental section The bilayer graphene samples for this study were prepared using mechanical exfoliation techniques [2] from the bulk highly oriented pyrolitic graphite (grade ZYA, SPI Supplies) and transferred onto the surface of a lightly doped silicon substrate covered with a 300-nm thick layer of thermally grown , The doped silicon substrate and were used as back-gate and gate dielectric, respectively. Graphene electrical electrodes were patterned using photolithography techniques. A pair of ohmic Cr/Au (5nm/100nm) contacts were deposited via thermal evaporation at a background pressure of 10à ¯Ã¢â€š ¬Ã‚ ­7 mbar and subsequently lifted off in warm acetone. Electronic transport measurements have been carried out on multiple samples, using PPMS (Quantum Design) with a fixed excitation current of 10 . Electrical measurements were performed in the temperature range 2K ~340K and a magnetic field up to 12T was applied. 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K.; Katsnelson, M. I.; Novoselov, K. S.; Booth, T. J.; Roth, S., The structure of suspended graphene sheets. Nature 2007, 446, 60-3. Barone, V; Hod, O.; Scuseria, G. E., Electronic structure and stability of semiconducting graphene nanoribbons. Nano Letters 2006, 6 (12), 2748-2754. Han, M. Y; Ozyilmaz, B; Zhang, Y. B; Kim, P., Energy band-gap engineering of graphene nanoribbons. Physical Review Letters 2007, 98 (20). Wang, Z. F.; Shi, Q. W.; Li, Q. X.; Wang, X. P.; Hou, J. G.; Zheng, H. X.; Yao, Y.; Chen, J., Z-shaped graphene nanoribbon quantum dot device. Applied Physics Letters 2007, 91 (5). Zhang, Y; Tang, T.-T.; Girit, C.; Hao, Z.; Martin, M. C.; Zettl, A.; Crommie, M. F.; Shen, Y. R.; Wang, F., Direct observation of a widely tunable bandgap in bilayer graphene. Nature 2009, 459 (7248), 820-823. Kuzmenko, A. B.; Crassee, I.; van der Marel, D.; Blake, P.; Novoselov, K. S., Determination of the gate-tunable band gap and tight-binding parameters in bilayer graphene using infrared spectroscopy. Physical Review B 2009, 80, 165406. Morozov, S. V.; Novoselov, K. S.; Katsnelson, M. I.; Schedin, F.; Elias, D. C.; Jaszczak, J. A.; Geim, A. K., Giant intrinsic carrier mobilities in graphene and its bilayer. Physical Review Letters 2008, 100 (1). Barlas, Y; Cote, R.; Nomura, K.; MacDonald, A. H., Inter-Landau-level cyclotron resonance in bilayer graphene. Physical Review Letters 2008, 101 (9). KrsticÃÅ' , V; Obergfell, D.; Hansel, S.; Rikken, G. L. J. A.; Blokland, J. H.; Ferreira, M. S.; Roth, S., Grapheneà ¢Ã‹â€ Ã¢â‚¬â„¢Metal Interface: Two-Terminal Resistance of Low-Mobility Graphene in High Magnetic Fields. Nano Letters 2008, 8 (6), 1700-1703. Bisti, V. E.; Kirova, N. N., Charge Density Excitations in Bilayer Graphene in High Magnetic Field. Jetp Lett. 2009, 90 (2), 120-123. Nomura, K; MacDonald, A. H. Physical Review Letters2006, 96, (25), 256602. 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Philosophy of Education :: Philosophy of Teaching Statement

Philosophy of Education â€Å"Be all that you can be. Find your future- as a teacher.† No, joining the army is not what Madeline Fuchs Holzer had in mind when she said this quote. Being all you can be in life requires dedication, responsibility and a desire to do what you love. Teaching is a profession that requires 110% from a person. I have the drive and ability to be the best that I can be as a teacher. There is not anything else I would want to do with my life besides teaching. I want to be a reflection to my students that they can be all that they can be. Another quote by Henry Adams, â€Å"A teacher affects eternity; he can never tell where his influence stops.† To be that type of teacher has been a lifelong goal for me. I want to make my mark in the world and this is my way of doing it. To have the ability to affect a child’s life for an eternity is something that not everyone can say they have accomplished. Teaching definitely is a profession that will affect eternit y. The main reasons for wanting to become a teacher would be my love for children, my family inspirations; God’s calling for me, and my love for learning. All my life I have enjoyed being around children. They have great spirits about them that makes me feel free spirited. Their innocence, undying energy and their love for life makes me take these characteristics and apply them to my own life. Another motivation for me is the inspirations of my grandfather and my father. My grandfather died when I was very young and the one thing everyone has always said about him is his love of flying and teaching. His life was spent on teaching others and when he passed away he was remembered as being a great teacher devoting himself entirely to his family and his students. My father spent the first thirty years of his life going form job to job since he had not finished his schooling younger in life. At middle age he decided to go back to college and earned his degree in education. He felt that becoming a teacher he would be a testimony to children to continue their education to better their future.

A new social contract

There are many suggestions for reform in government’s relationship to the economy. As I had hinted in my earlier discourse, many of my recommendations deal with eliminating government’s intervention in economic activity. Thus, there needs to be a creation of a free market economy, independent of government influence as a means to stimulate economic enterprise toward more productivity and to restore the economy to a strong position. However, given the long history of government involvement, it is highly unlikely that such action is possible.I guess it is time for a new social contract. It seems that the policies and practices in the employment of relationships in America are no longer responsive to the needs of today’s working families and society. There had been more emphasis on increased profits and productivity while the wages have remained the same, or worst, declined and stagnated for families. The irony is that people are working harder, but they do not belo ng among those who share in the gains from their efforts. Only a small percentage of the population is privileged to have that benefit, adding to the increasing inequality. The families are affected by these changes and one wonders what he can do in the face of these economic changes. The implicit social contract that encompasses work such as loyalty and hard work are not necessarily rewarded with fair and increasing wages. This has been blotted out by a norm where employers give center stage to stock price and even short-term gains, which are often at the expense of the workers who work hard daily.What we call the American Dream is usually the promise of riches and prosperity and a life that is well-lived.   This has been the ideal ever since that ensures one success in life so long as he is willing to sacrifice everything to work for it. It has been such an illusion for many. Thus the American dream has become a driving and motivating force for millions of people who flock to th e â€Å"Land of the Free† because they want to escape the poverty in their countries. They think that their only option viable to them is to move to a country that promises them success, wealth, freedom from material prosperity.However, even though this is oftentimes true for the people who really do work hard for the dream, the American Dream must not be promoted as it is. The reason here is because it shifts the focus from the true values that count in the family to the material wealth and greed that entices people to come work in a land of opportunities which may otherwise not turn out to be so (The American Dream).I remember Walt Whitman’s poem I Hear America Singing where there is the sense of each one seeking his own personal niche in the land of promises as seen in the following lines:â€Å"Each singing what belongs to him or her and to none else, The day what belongs to the day–at night the party of young fellows, robust, friendly, Singing with open mou ths their strong melodious songs.†(I Hear America Singing).It almost captures that desire as one reads the entire work and is very descriptivethat the future belongs to the young and those who are open to opportunities. For the people who leave their country of origin, there is a substantial tradeoff for embracing the American Dream. Behind the veil of power and comparative material wealth that is promised to every individual, there is a significant loss that one must encounter. And that loss is the loss of traditional culture. In the essay by MSNBC columnist Eric Liu, he states that during one of his dinner meals at a friend’s house: â€Å"The more time I spent in their midst, the more I learned to be like them. To make their everyday idioms and idiosyncrasies familiar. To possess them.† This particular longing to assimilate all of the â€Å"everyday idioms and idiosyncrasies† of the American culture was brought about not by curiosity or a certain zeal fo r knowledge. This particular longing was fueled by negative emotions. This passion for learning the ropes of American culture was born out of the longing of the desire to fit in.The American Dream may be able to provide a person the necessary wealth that one could only dream about in his native country but it also takes away the immaterial liberties that come from being rooted in a different culture. This is what is seen in Tony Went to the Bodega But He Didn’t Buy Anything. Because the person sat at the doorway and saw people come and go, his being in that position depicted a life of leisure which one thinks could be achieved if he pursues the American Dream. One does not know that there is an illusion to this since one may never attain this goal by just going to a place and hoping that one’s station in life is guaranteed to be easy. The American Dream will always be a Utopian dream until people realize that material wealth is not the only path for success and happine ss. This is seen in the lines,Tony went to the bodega, But he didn’t buy anything: He sat by the doorway satisfied To watch la gente (people Island-brown as him). Crowd in and out, (Tony Went to the Bodega But He Didn’t Buy Anything).The American Dream promises people from all walks of life and all countries of origin that within this land, there is freedom from oppression, freedom from poverty and material wealth but for other people, it will only remain a dream for them. As Langston Hughes remarks, â€Å"I am the people, humble, hungry, mean–Hungry yet today despite the dream.†Ã‚   There have been casualties during this fight for the American Dream. Several people have risked leaving their homelands in search of a bright future in the United States yet there are millions today on relief and people are still being persecuted and discriminated.The land of the free is still a land of oppression and even though people would like to view it as a land of oppo rtunity, it becomes more like a land of   deception and false hopes. Hughes ends his poem with both a revelation of what America has come to be as well an exhortation to the people to make America what is should have been. He says: â€Å"The mountains and the endless plain–All, all the stretch of these great green states–And make America again! (Hughes, 1938).Being optimistic about the dynamic forces of globalization and the practical applications of corporate social responsibilities sweeping multinational and large national organizations, I still believe that there is a balanced solution in multinational’s outsourcing of resources and less developed countries’ mutual advantage from this economic relationship. It is the primary duty of the national governments to uphold their sovereignty and protect their natural resources, especially their human resource or labor from being corrupted by foreign companies. They must uphold their constitution and by law s and promote more economic and bilateral policies to protect their people and resources at the same time harness their economic potential for the nation’s own advantage, growth and development.They must dictate the terms for which their resources will be used, taking into consideration the growth and comparative advantage of their people and the extinction of their natural resources and habitat. The notion about hiring local managers and staff is preliminary. Of paramount importance is the question of how and in what terms they will allow the multinationals to exhaust their most important resources and capital.In effect, the dream that once tugged at people’s hearts never really existed in the first place. The dream that made people leave their homelands only remain a dream because there are people who still have not â€Å"made it† in America. There is something amiss in the ruckus that is about the American Dream. On one side, the American Dream remains a drea m where the corruption and the apathy of people continues to prevent it from coming true while on the other side, the American Dream comes with too high a price. It asks for the individual’s culture, it torments the person and convinces him into thinking that if you do not assimilate the American culture, you will never make it.Given the importance of our work in our daily lives, our policies and institutions need to provide decent benefits and the opportunity to use one’s abilities to the maximum. Consistent with our nation’s democratic principles, all Americans must possess a freedom to voice out their opinions and be treated fairly. This just means that we value a balance between the interests of the employers and shareholders and the interests of the family.ReferencesThe American Dream. Retrieved Oct. 20, 2007 at:http://en.wikipedia.org/wiki/American_DreamI Hear America Singing by Walt Whitman.About.com Literature Classic.Retrieved Oct. 20, 2007 at:  Ã‚  Ã ‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   http://classiclit.about.com/library/bl-etexts/wwhitman/bl-ww-ihear.htmHughes, Langston. 1938. â€Å"Let America Be America Again.† Retrieved Oct. 20, 2007 at:  http://www.poetryconnection.net/poets/Langston_Hughes/2385Tony Went to the Bodega But He Didn’t Buy   Anything.Retrieved Oct. 20, 2007 at:http://www.gcsk12.net/speech_meet/speech_docs/Junior%20High%2005-06/dramatic%20poety/dramatic_poetry_43.pdf