From LO to LOL - Emphasis

From LO to LOL From LO to LOL It is 40 years ago, almost to the day, that the internet made its first connection. On 29 October 1969, a computer in the University of California connected with one several hundred miles away in the Stanford Research Institute, just long enough to receive the message LO. (It was meant to be LOGIN, but the system crashed before the G could be typed.) The rate at which the internet and related technologies have developed since that fateful day is positively dizzying: from science fiction to something tentatively toyed with by a very few, to a ubiquitous part of life for the vast majority in a few decades. Increasingly frequently this is our chosen method of communication in work and out to the point where the future of a national institution like the postal service is threatened. But could our relationship with language be threatened too? The question does keep rearing its worried head over the possibilities of the future: illiterate children? Txt spk @ work? Robot computers marking exam papers? Whats certain is that there will be an effect of some kind. After all, use of the word hello as the greeting we unthinkingly use originated when Thomas Edison declared it the clearest way of answering the telephone. Interestingly, in 2003 it was reported that traditional greetings like hello would soon become obsolete, replaced (as they often are in texts and email) with globespeak alternatives, such as hey, howdy and gday. This, if true, would effectively bring the life of hello full circle: both created for and destroyed by the rise of a new technology. Although we probably neednt sound its death knell quite yet. Then, of course, theres Microsoft: it may rule the world, but to what extent does it rule our words? We are all guilty of relying more and more heavily on Words varicoloured squiggly lines and AutoCorrect function to correct our mistakes, but we are all also probably aware that the program is far from infallible. For example, certain errors such as unnecessary initial capital letters or accidental use of homonyms may not be flagged, while words that are actually spelled accurately can be. Changes both in language and in technology are inevitable and move at a great pace, but theyre not always in step with each other. While newer words like podcast and texting have found their way into dictionaries, older versions of Word still mark them as wrong. The limitations of spellcheckers have been such that the phenomenon of them wreaking havoc with documents now has its own name: the Cupertino effect. Its so-called because Cupertino (the Californian city home to Apple Inc.) used to be the first offering to replace cooperation, back when spellcheckers only recognised the hyphenated version of the word. This meant that anyone breezily pressing accept all changes was left with such nonsensical phrases as the Cupertino with our Italian comrades proved to be very fruitful. (This is taken from an official NATO document from 2003.) Proper nouns and foreign words can also cause problems, as news service Reuters discovered when it inadvertently ended up referring to Pakistans Muttahida Quami Movement as the Muttonhead Quail Movement. Naturally, updates are being made all the time to prevent these particular blunders Microsoft Office 2010 offers a contextual speller in order to make correction suggestions more accurate. Nevertheless, other problems are quite likely to pop up and, however ingenious the algorithm behind the latest features, the ultimate responsibility is with us to check what we actually end up saying. It is also unavoidable that around periods of great change therell be those who fret over the potential consequences. The massive rise in texting has led to concern that this abbreviation-filled medium is going to destroy childrens literacy and have them including such terms as LOL (laugh out loud) and gr8 (great) in their schoolwork. Tales of such inclusions abound, but many are mere fabrication; in fact, several studies have found that the majority of children scornfully denounce the idea that theyd do such a thing. Indeed, a positive aspect could be that kids are taught the importance of writing appropriately for different contexts. We wont be able to stop the dual juggernauts of technology and language change, but we neednt necessarily fear them. The best approach is probably to stop worrying about a future filled with texted essays and automatons in charge of education, and make sure to keep a responsible eye on what we are each actually producing. After all, the future of writing if not the future of technology is largely in our hands.

The Hukbalahap Rebellion in the Philippines

The Hukbalahap Rebellion in the Philippines Between 1946 and 1952, the government of the Philippines fought against a tenacious foe called the Hukbalahap or Huk (pronounced roughly like hook).  The guerrilla army got its name from a contraction of the Tagalog phrase Hukbo ng Bayan Balan sa Hapon, meaning Anti-Japanese Army.  Many of the guerrilla fighters had fought as insurgents against the Japanese occupation of the Philippines between 1941 and 1945.  Some were even survivors of the Bataan Death March who managed to escape their captors. Fighting for Farmers Rights Once World War II was over and the Japanese withdrew, the Huk pursued a different cause: fighting for the rights of tenant farmers against wealthy land-owners. Their leader was Luis Taruc, who had fought brilliantly against the Japanese in Luzon, the largest of the Philippine islands.  By 1945, Tarucs guerrillas had retaken most of Luzon from the Imperial Japanese Army, a very impressive result. A Guerrilla  Campaign Begins Taruc began his guerrilla campaign to overthrow the Philippine government after he was elected to Congress in April of 1946, but was refused a seat on charges of election fraud and terrorism.  He and his followers went to the hills and renamed themselves the Peoples Liberation Army (PLA). Taruc planned to create a communist government with himself as president.  He recruited new guerrilla soldiers from tenant organizations set up to represent poor peasants who were being exploited by their landlords. The Assassination of Aurora Quezon   In 1949, members of the PLA ambushed and killed Aurora Quezon, who was the widow of former Philippine president Manuel Quezon and the head of the Philippine Red Cross.  She was shot dead along with her eldest daughter and son-in-law.  This killing of a very popular public figure known for her humanitarian work and personal kindness turned many potential recruits against the PLA. The Domino Effect By 1950, the PLA was terrorizing and killing wealthy land-owners across Luzon, many of whom had ties of family or friendship with government officials in Manila.  Because the PLA was a left-wing group, although it was not closely affiliated with the Philippine Communist Party, the United States offered military advisers to assist the Philippine government in combating the guerrillas. This was during the Korean War, so American concern about what would later be termed the Domino Effect ensured eager US cooperation in anti-PLA operations. What followed was literally a textbook anti-insurgency campaign, as the Philippine Army used infiltration, misinformation, and propaganda to weaken and confuse the PLA.  In one case, two PLA units each became convinced that the other was actually part of the Philippine Army, so they had a friendly-fire battle and inflicted heavy casualties on themselves.   Taruc Surrenders In 1954, Luis Taruc surrendered.  As part of the bargain, he agreed to serve a fifteen-year prison sentence.  The government negotiator who convinced him to give up the fight was a charismatic young senator named Benigno Ninoy Aquino Jr.   Sources: Bridgewater, L. Grant.  Philippine Information Operations During the Hukbalahap Counterinsurgency Campaign, Iosphere, Joint Information Operations Center, accessed July 2014.Gojo, Romelino R.  The Hukbalahap Movement, Command and Staff College Thesis, April 6, 1984.Greenberg, Lawrence M.  The Hukbalahap Insurrection: A Case Study of a Successful Anti-Insurgency Operation in the Philippines, 1946 - 1955, U.S. Army Center of Military History, Historical Analysis Series, Washington DC, 1987.

Decline in the American middle class Research Paper

Decline in the American middle class - Research Paper Example They then define what we come to know as white collar jobs and blue collar jobs. These classifications show the diversity of this social stratum in a way that only emphasizes their vast contribution to the growth of the nation and what they fundamentally embody, the American people. The ruling class, many would argue, pertain to the country’s upper class that holds wealth and a monopoly of power. But rather than being antagonistic against this other class, most Americans aspire to be part of it by becoming rich. Contrary to the privileged few, a survey show that around 45% of Americans identify to being in the middle class. These people include highly educated professionals such as lawyers, doctors, engineers and managers. They are classified into living in the suburbs and partaking of other posh activities including country clubs. Similarly, another face of the middle class includes small business owners also called the ‘petit bourgeoisie’ among others. â€Å"Th us, in subjective terms, the middle class is the largest single class in American society, but in cultural terms, it is highly diverse because so many different lifestyles are represented within it† (Kornblum 275). There is no doubt that there really has been a drastic decline in the country’s middle class. ... This is down by 21% from the 1970 recorded 65% of families as middle income. To show the discrepancy, one-third of the families in the same area classified as affluent or within poverty increased from 15% in 1970. This study was conducted through a census involving 117 of the largest metropolitan areas throughout the United States. It is part of US2010 funded by Russell Sage and Brown University. What this implies, Stanford sociologist Sean Reardon explicates, is that the next generation will see the most effects. More children will have less access to better education and child care. In a sense, the affluent families will be isolated to their own class with less interaction coming from public amenities such as schools and transportation. This could perceptively affect future investments and public policies for the benefit of mostly the middle class population. The gap between the rich and the poor is also seen in test scores and consequently college education. More children from wel l to do families are able to complete college compared to low income earners (Tavernise, n.p.). The disparity in education is an easily apparent effect of the continued decline of the middle class. As the gap between income increases, more and more of those from the higher strata are able to afford the increasingly high cost of university education. The bulk of the middle class are in turn become unable to support sustained tertiary education in expensive private institutions. This then becomes a vicious cycle as those from lower income families often begin their career without college education. Education is universally known as a determinative factor in professional success. More

CONTEMPORARY PRACTICES AND DEBATES Essay Example | Topics and Well Written Essays - 3000 words

CONTEMPORARY PRACTICES AND DEBATES - Essay Example The book has been adopted and translated into many forms of media productions, these include; screen, audio, stage, and many others (Lerner, L. J. 2004, 3). A journalistic view of the book reveals so much about the contemporary life and the human behavior towards other people, those who they consider close acquaintances, and those perceived to be enemies (Johnson, K. A. 2012, 76). The little prince, George is a character from a different planet, in search of adventure, and because of boredom, he leaves his planet to explore the outside world. This shows how human beings are mobile and tend to travel a lot in search of the values they consider deer to them, in Antoine’s real life scenario, he left his country. France, and went to the United States to convince the country to join the in the anti-Nazi war (Shirer, W. L. 2011, 197). This is his driving force, he moved from his own home to a foreign place to satisfy his urge of wanting to help his country from a different perspecti ve. The same applies to the little Prince George, he left his own planet due to a driving force, the urge to find out more and move out of his free cocoon. This, he eventually achieves, he grabs the first opportunity that comes around, the bird migration, he uses the birds to move to other planets. Here we learn about the nature of humans to take advantage of things that come around to satisfy their own needs. People trend to have a strong pull towards achieving their goals such that they do anything possible to achieve it; they are opportunistic in nature, using something that they did not expect to come around to their advantage. Antoine creates a mental picture of a man clinging to the wings of numerous birds flying from one planet to another (Normington, K. 2007, 347). Thinking of it, it looks like a big risk to take, but the little prince takes it anyway. He has an opportunity that he knows might not come around again. The manner in which Antoine brings out all these is quite r emarkable. The scene has been translated into a graphical form by the media, a picture of a young boy waiting to cling to some flying birds; he stands on a small planet, which he considers to be home. What catches the eye is the fact that, the prince seems to be sad. This is probably because he is leaving his little rose behind. This, as we can see, is the only thing that he is emotionally attached to, he is sad to leave it behind, though they have had their differences. We are told how the little Prince George was so emotionally attached to the rose flower, all the things he did to prevent it from harm. How he uprooted all the weeds that prevented it from growing to maturity (Saint-Exupery, A.D. 2004, 35). At some point, they even quarreled and this is what prompted him to leave in the first place, he thought that the rose was taking advantage of him. However, they get through it and become friends again. This alludes to the human nature of having emotional attachments to other peo ple or things; these can be even pets or other gadgets, these are the things that people hold closest to the heart and are so deer to them, in most cases, these are persons of the opposite sex. the flower represented spouses, how relationships work, people get emotionally attached, they go through so much together trying to protect themselves, at some point they differ in opinions and fall apart, but sooner or later they mend things and come back together. The aspect of sacrifice also

Of mice and men Essay Example for Free

Of mice and men Essay Is it the piano which is half caste? Or it is life that is half caste as he utters on the fourth stanza I close half a eye consequently where I dream, I dream half dream. Through these lines I discover that in his point of view even his dreams are half! However he demands an answer as he repeated the very word Explain yuself. He wants us to him an answer for What is half caste and if it is asked to me I really dont have an answer to it. The structure of Agards poem is fairly casual and is written in his style and ascent which magnetizes the readers towards his poem, there is also a lack of punctuations which tells me that the poet want the readers to read his poem relatively fast, like a rap or song, like people speak in a debate, in a aggressive tone because the poem is protesting against the word Half caste that is why I think there are lack of punctuations because it suits the theme of the poem. The similarities which I found between the two poems are that both of the poets wrote about their cultural identity. Both Sujata and Agard used rhetorical questions and enjambments on the poem. Equally the poets are looking for an answer, Bhatt is looking for why she cant speak Gujarati? Why cant she use both of her tongues? And Agards just looking for the meaning of Half caste. The differences I found between them are that Bhatt used stacks of rhetorical questions which helped us understand her point of view over having two tongues and lose the mother tongue on the other hand Agards using repetition as his poetic device to explore his arguments and anger over the word Half caste. To me Half caste is more appealing than Search for my tongue because John Agards using plenty of rhetorical questions and repetitions than Bhatt; his poems structure is vastly eye catching in addition. After reading these poems, the facts I learnt about their cultural identity are that both of them loves their culture, they loves where they are from, loves their background and wants to spread their culture all over the world which were the main agendas behind writing these poems. After reading these poems I learnt where I belong to, how can I represent my culture all over the world finally these two poems taught me to be proud and respective towards my and everybodys culture. As Im asked which poet would I empathise with? I will go along with John Agard rather than Sujata Bhatt because he is fighting for just one answer which is What do you mean by the word Half Caste he quoted most of the time on the poem Explain yuself, he is protesting against the word Half caste he is objecting adjacent to racism which is really effective to me, this poem taught me how to protest against those unpleasant words and that is why I have chosen John Agard as my role model. Mohammed Sayed 10F Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE John Agard: Half-Caste section.

College Athletes Should Be Paid Essay -- Argumentative Persuasive Athl

  College athletics is a billion dollar industry and has been for a long time. Due to the increasing ratings of college athletics, this figure will continue to rise. It’s simple: bigger, faster, stronger athletes will generate more money. College Universities generate so much revenue during the year that it is only fair to the players that they get a cut. College athletes should get paid based on the university’s revenue, apparel sales, and lack of spending money. I believe that college sports should be considered a profession. Athletes deserve to be paid for their work. College athletics are a critical part of America’s culture and economy. At the present time, student-athletes are considered amateurs. College is a stepping-stone to the professional leagues. The NCAA is exploiting the student- athlete. Big-time schools are running a national entertainment business that controls the compensation rate of the players like a monopoly (Byers 1).   Ã‚  Ã‚  Ã‚  Ã‚  According to the NCAA regulations an athlete will lose his/her eligibility if they are paid to play; sign a contract with an agent; receive a salary, incentive payment, award, gratuity educational expenses or allowances; or play on a professional team. The word amateur in sports has stood for positive values compared to professional, which has had just the opposite. The professional sport has meant bad and degrading; while the amateur sport has meant good and elevating. William Geoghegan, Flyer News sports editor writes, â€Å"Would paying athletes tarnish the ideal of amateurism? Maybe, but being fair is far more important than upholding an ideal† (Geoghehan 1).   Ã‚  Ã‚  Ã‚  Ã‚  Some people say that college athletes get paid by having a scholarship, but if you look at it a different way, scholarships might change your mind. Coaches try to get players who they think have the talent to make them win and to persuade them to come to their school by offering them scholarships. The whole idea behind a scholarship is to lure the athlete into coming to your school. Scholarships are nothing more than a recruitment tactic. They will give you a scholarship as long as you produce for them. It’s all about what you can do for them. Indeed these scholarships pay for tuition, room and board, and books, but these athletes don’t have money for other necessities. The NCAA doesn’t want friends or boosters to offer athletes jobs because they ... ...hletes recruited to attend college come from lower, working-class families. The opportunity to enter the draft early to help their families financially is one that will hardly be passed by.   Ã‚  Ã‚  Ã‚  Ã‚  On the issue of college athletes getting paid, I believe they should. When I mean getting paid I only mean a stipend or weekly check, not thousands or millions. All the hard work and dedication they put into their sport and academics are worthy enough. I have had a chance to play collegiate sports and it takes a lot out of you mentally and physically. The student athletes deserve at least enough money to have a normal student life. $300-$400 a month should give athletes enough money to get the required necessities. All this does is replace the notion of the athlete getting a job for a source of income. This will also help reduce the rate at which athletes accept money, cars, and gifts from boosters. When athletes get caught accepting something from a booster it looks bad on the athlete and the college. So, in my opinion yes college athletes should get paid, there is too much money that the universities have earned floating around going unanswered for the athletes not to get their cut.

History of Womens Football in England Essay

I have chosen to do my essay about the history of women’s football in England. I’ve chosen to write about this because it is a topic which I am interested in as I play for a girl’s football team inside school and out. Also I would like to find out more about women’s football and where and when it all started. In this essay you will find out about the basic history of women’s football heading all the way back from 1895 to present day. I will also write a comparison between men’s football and women’s and share my opinion about 1895-1920 On the 6th April 1895 the first ever women’s football game took place at Preston Park, Brighton. The event was organised to raise funds for local medical charities. In the match North beat South 7-1. Up to 1920 no more women’s matches took place until the first women’s international game when Dick Kerr’s English ladies took on the French Ladies. The result was a 2-0 victory to England; this game had a huge audience of 25,000 people. On Boxing Day 1920 a match took place between Preston and St Helens, Preston winning 4-0. It was the biggest crowd to date for a women’s match with 53,000 spectators. 1921 In 1921 another big match was supposed to take place between London and Paris. This match never went ahead due to the FA. The FA issued a ban against womens football. They stated ‘the game of football is quite unsuitable for females and ought not to be encouraged’. This meant any women caught playing football on the grounds of an affiliated club would be punished for breaking the law. Many women were disgusted by the decision and thought it was very unfair to do this. If I was around in this time I would also be very aggravated by the decision and I would be offended that they still allow men to play. 1969-1971 After 48 years of womens football being banned women wanted to change this. They started to become very annoyed a started campaigning. After a few campaigns 44 women got together to form The Womens Football Association (WFA). They were hoping that they would slowly gain back the right to play womens football. Two years later in 1971 the FA council lifted the ban against women which allowed women to play football once again. It had been fifty years since they had been allowed to play so they knew that the game would be no longer as popular as it was and it would take a while to get it back to the way it was. Not long after the ban was lifted women were advertising for football teams all around the country. 1991-1994 Since 1971 womens football slowly grew bigger and bigger with many small local leagues playing all around the country. In 1991 the WFA launched a national league. It started off with 24 clubs from all around the country it was pretty similar to the womens league we have today. Two years later they found that the league had been very successful so the WFA decided to host a cup competition. In 1993 the WFA held a national cup competition with 137 teams entering from across the nation. Womens football was slowly becoming bigger and gaining popularity. In 1994 the FA took on the administration of the Womens Nation League and the League Cup competition. The league then became The FA Womens Premier League (FAWPL). 1997-1998 In 1997 the FA decided that they were going to develop womens football from the grassroots to the elite level. This meant that more young girls could get involved to gain popularity. In 1998 the first 20 Centres of Excellence were established for young girls. Sponsors were gained for the league and the cup competitions; this raised the profile of the women’s game. Also in 1998 Hope Powell was appointed as the first full-time coach for the England’s Women’s international side. This was a very big thing for the nation. I think this helped the game increase its popularity because it got more people involved in the game from an early age which meant in the future decade’s womens football should be a very popular game. 1999-2002 In 1999 England entered their first Fifa World Cup. The competition was held in the USA and which saw tickets sold out for most matches and over 90,000 at the Final. There had been a competition called the Women’s World Championship. This was just like a world cup and it was held in 1991 but England didn’t participate. In 2002 researchers found that football had become the top participated sport for girls and women of England. The FA had not planned for this to happen for another 3 years, so they were well ahead of schedule. 2005-Present In 2005 the UEFA Womens Championship was held in England. The opening matches attracted around 29,000 spectators per game, with around 2.9 million people watching the games live on BBC Two. The tournament was attended by over 115,000 fans within 15 matches. England went out in the group stages, but got a lot of recognition across the nation. Since then womens football has gradually become more popular and has reached the level it is at today. I think it has done well to regain its popularity after the fifty year ban, but I don’t think it will ever get back to the popular state which it was in before the game got banned. FA’s Plan for the Future of Women’s Football The FA has many plans to increase the growth of womens football. They are introducing it to younger people across the country by holding taster days and trials for many football clubs. Also the FA is trying to expand the womens football league into two different leagues just like the men’s. Here is an extract from the article the FA released ‘The Football Association is considering introducing a two-tier Women’s Super League (WSL) in 2014. The eight teams that took part in the inaugural WSL season, which ended in August with Arsenal winning the title, have been offered new licences. Sixteen teams had initially applied for membership in 2010, with Sunderland and Nottingham Forest missing out. An FA statement said: â€Å"Plans being discussed include exploring the introduction of a second tier in 2014.†Ã¢â‚¬â„¢ I think this is a good idea because it will make the game become more popular across the co untry. Also with more leagues being introduced this means more spectators which will mean more money is being funded into the association. What I think of the Future of Women’s Football I think womens football has done very well to get back to where it is today due to the ban for fifty years. However, I don’t think that womens football will ever get to the stage like men’s because men’s football has had a lot more time to reach this popularity. Also there is a huge amount of money in the association and it would be practically impossible for women to get to that amount. I do think that womens football will grow bigger and younger girls will start to get involved. The only problem with this is it will take quite some time but they have to make up the time from the ban. Comparison When it comes to football men and women play the exact same game but one seems to be a lot more popular, the men’s. Men’s football was first found in 1314 which is nearly 700 years ago and womens football was first found in 1895 which is not even 120 years ago. Therefore there was 581 years between men and womens football. Somehow this has managed to affect the popularity in the game as it is very rare to find womens football on television when it is averaged that there is one male football match per week shown on television. If you wanted to be a professional footballer whatever sex you are you would get paid, but there is a significant amount of money difference between the genders. The average male Manchester City player would receive around  £86,280 per week plus bonuses and the average female Arsenal player would receive around  £3,000 per week that means that there is  £83280 different in the wages they receive each week. Opinion I think that womens football is different today than men’s because the FA banned it. I think if women were able to play football all the way through the 20th Century I think womens and men’s football would be similar in popularity and the wages. I also think that is very silly that the games are treated differently because they both play the same game, 90 minutes each week and the male are treated much better and receive the better pay when they both do the same job.

Alternative Fuels for Automobiles

Alternative fuel, also known as non-conventional fuels, is any material or substance that can be used as a fuel, other than fossil fuels. Alternative fuels, as defined by the Energy Policy Act of 1992 (EPAct), include ethanol, natural gas, propane, hydrogen, biodiesel, electricity, methanol, and p-series fuels. Using these alternative fuels in vehicles can generally reduce harmful pollutants and exhaust emissions.Alternative fuels are designed to be cheap, non-polluting, ‘infinite' sources of energy. No such fuels currently exist globally, or they would by now be rapidly replacing current fossil fuels. In the year 2000, there were about eight million vehicles around the world that ran on alternative fuels. A primary concern is that the fact that the use of conventional fuels directly contributes to the global warming crisis.Another concern is the problem of peak oil, which predicts a rising cost of oil derived fuels caused by severe shortages of oil during an era of growing ene rgy consumption. According to the ‘peak oil' phenomenon, the demand for oil will exceed supply and this gap will continue to grow, which could cause a growing energy crisis by the year 2010 or 2020. Most of the interest in alternative fuels has focused on transportation vehicles, since this application represents 70% of petroleum consumption.The President also proposes acceleration of the development of domestic, renewable alternatives to gasoline and diesel fuels through: $150 million for the Biofuels Initiative—a $59 million increase over FY 2006—to help develop bio-based transportation fuels such as â€Å"cellulosic ethanol† from agricultural waste products, such as wood chips, stalks, or switch grass; $31 million to speed the development of advanced battery technology to extend the range of hybrid vehicles and make possible â€Å"plug-in† hybrids and electric cars—a 27 percent increase over FY 2006; and $289 million for the President†™s Hydrogen Fuel Initiative.President Bush outlined the Advanced Energy Initiative (AEI) in pursuit of a national goal of replacing more than 75 percent of U. S. oil imports from the Middle East by 2025. Since 2001, nearly $10 billion has been invested by the Federal government to develop cleaner, cheaper and more reliable alternative energy sources. 1. ETHANOL Ethanol can run at a much higher compression ratio without octane-boosting additives. It burns more completely because ethanol molecules contain oxygen; carbon monoxide emissions can be 80-90% lower than for fossil-fuelled engines.(Hua Lu Karlsson. 2006). However, ethanol is degrading to some plastic or rubber parts of fuel delivery systems designed to use petrol, and has 37% less energy per litre than petrol . There has been a recent revival in interest in the use of ethanol-diesel fuel blends(E-diesel) in heavy-duty vehicles as a means to reduce petroleum dependency, increase renewable fuels use, and reduce vehicle emissi ons. The major concern with the use of E-diesel derives from its flammability characteristics.E-diesel blends containing 10% to 15% ethanol have the vapor pressure and flammability limits of ethanol. This means that ethanol concentrations in enclosed spaces such as fuel storage and vehicle fuel tanks are flammable over the temperature range of 13 to 42 °C, typical ambient temperatures. Thus, there are increased risks of fire and explosion compared to diesel fuel, or even gasoline. Other vehicle performance-related concerns have also been raised.These include decreased maximum power, increased incidence of fuel pump vapor lock, and reduced fuel pump and fuel injector life due to the decreased lubricity of ethanol. Ethanol can be blended directly in petrol, up to a mix of 20%, without engine modifications, though engines would need to be modified for higher blends. Ethanol blended diesel fuels (10 to 15% ethanol) require emulsifiers and solubilisers, depending on the ethanol quality . For use of pure ethanol in diesel engines an additive (ignition improver) is needed for cold start and idling. Fuel pump adaptations may also be necessary.Barriers to the use of ethanol in diesel fuel include limited miscibility at lower temperatures and need for minor variations in fuel delivery systems to account for the different physical properties of ethanol as compared to diesel. ( K. R. Gerdes and G. J. Suppe , 2001). An increase in fuel consumption approximately equivalent to the reduction in energy content of the fuel can be expected when using ethanol-diesel blends. With ethanol percentages of 10%or less, operators have reported no noticeable differences in performance compared to running on diesel fuel. ( Hansen et al.,2001). The use of E diesel is the affect of the ethanol on the lubricating properties of the fuel and the potential for fuel system wear. Additive packages that are used to formulate E diesel fuels can improve fuel lubricity and prevent abnormal fuel syst em wear. E 85 The heavily promoted alcohol fuel called E85 might cut America's oil use and help support U. S. agriculture, but it's not reducing motorists' fuel bills. E85 is a blend of 85% ethanol and 15% unleaded gasoline for use in flexible fuel vehicles (FFVs). E85 is classified as an alternative fuel by the U.S. Department of Energy. A flexible fuel vehicle (FFV) is a vehicle that can operate on any blend of ethanol up to 85%. If E85 is not available, the vehicle can operate on straight unleaded gasoline or any percentage of ethanol up to 85%. It has the highest oxygen content of any fuel available today, allowing it to burn more completely (cleaner) than conventional gasoline. E85 contains 80% less gum-forming compounds, like the olefins found in gasoline. Production and use of E85 results in a nearly 30% reduction in greenhouse gas emissions. 2.METHANOL Methanol, also known as wood alcohol, can be used as an alternative fuel in flexible fuel vehicles that run on M85 (a blend of 85% methanol and 15% gasoline). However, it is not commonly used because automakers are no longer supplying methanol-powered vehicles. Methanol is even more corrosive and its energy per liter is 55% lower than that of petrol. Methanol can be used in internal combustion engines with minor modifications. It usually is made from natural gas, sometimes from coal, and could be made from any carbon source including CO2.The ability to produce methanol from non-petroleum feedstocks such as coal or biomass is of interest for reducing petroleum imports. Methanol can be used to make methyl tertiary-butyl ether (MTBE), an oxygenate which is blended with gasoline to enhance octane and create cleaner burning fuel. MTBE production and use has declined because it has been found to contaminate ground water. Methanol produces a high amount of formaldehyde in emissions. In the future, methanol could possibly be the fuel of choice for providing the hydrogen necessary to power fuel cell vehicles.3. P ROPANE (LPG) Propane or liquefied petroleum gas (LPG) is also fast becoming a popular alternative fuel. It is a by-product of natural gas processing and crude oil refining. Propanol and butanol are considerably less toxic and less volatile than methanol. In particular, butanol has a high flashpoint of 35  °C, which is a benefit for fire safety. The fermentation processes to produce propanol and butanol from cellulose are fairly tricky to execute, and the Weizmann organism (Clostridium acetobutylicum) currently used to perform these conversions.Propane vehicles can produce fewer ozone-forming emissions than vehicles powered by reformulated gasoline. There is 98% reduction in the emissions of toxics, including benzene, 1,3 butadiene, formaldehyde, and acetaldehyde, when the vehicles were running on propane rather than gasoline. The cost of a gasoline-gallon equivalent of propane is generally less than that of gasoline, so driving a propane vehicle can save money. In addition, propan e is the most accessible of all alternative fuels. 4. NATUAL GAS (CNG/LNG)Natural gas in the form of compressed natural gas (CNG) or liquefied natural gas (LNG) is fast becoming one of the most popular alternative fuels. Natural gas contains hydrocarbons such as ethane and propane; and other gases such as nitrogen, helium, carbon dioxide, hydrogen sulfide, and water vapor and is produced either from gas wells or in conjunction with crude oil production. Natural gas pollutes much less than gasoline and very little has to be done to modify an internal combustion engine. It is also clean burning and produces significantly fewer harmful emissions than reformulated gasoline or diesel when used in natural gas vehicles.Smog-producing gases, such as carbon monoxide and nitrogen oxides, are reduced by more than 90% and 60%, respectively and carbon dioxide, a greenhouse gas, is reduced by 30%-40%. Natural gas can either be stored onboard a vehicle as compressed natural gas (CNG) at 3,000 or 3 ,600 psi or as liquefied natural gas (LNG) at typically 20-150 psi. Natural gas can also be blended with hydrogen. 5. HYDROGEN Hydrogen (H2) will play an important role in developing sustainable transportation, because in the future it may be produced in virtually unlimited quantities using renewable resources.Hydrogen has been used effectively in a number of internal combustion engine vehicles as pure hydrogen mixed with natural gas. In addition, hydrogen is used in a growing number of demonstration fuel cell vehicles. Hydrogen and oxygen from air fed into a proton exchange membrane (PEM) fuel cell â€Å"stack† produce enough electricity to power an electric automobile, without producing harmful emissions. Fuel cells generate electricity by electrochemically combining hydrogen and oxygen. On a life-cycle basis, they produce zero or very low emissions, depending on the source of the hydrogen.Fuel cells are highly efficient energy-conversion devices that utilize hydrogen. But there are still many barriers to their use in vehicles, including the lack of a hydrogen distribution infrastructure, high capital costs for fuel cells and hydrogen-production technologies, and challenges related to hydrogen storage. The main difference is that batteries store electrical energy, while fuel cells generate electricity continuously as long as an external fuel source is supplied. That means their performance is not hindered by lengthy, inconvenient recharging times.If pure hydrogen is used as the fuel source, the only products are electricity, heat and water. The solid oxide fuel cell is able to directly utilize commonly available fuels such as natural gas, liquefied petroleum gas, diesel and biogas. When operating on natural gas, carbon dioxide (CO2) emissions are reduced by up to 60 percent compared with conventional electricity generation, with practically no emissions of nitrogen oxides (NOx) and sulphur oxides (SOx). Many scientists believe that pure hydrogen, the most common element on earth, is destined to be the vehicle fuel of the future.Hydrogen can be extracted from thousands of compounds, including natural gas, water, sugar and many petroleum products. The extraction of hydrogen requires energy, making hydrogen an energy carrier rather than an energy source. In transportation, and for many other applications, fuel cell technology is opening new doors of opportunity for hydrogen. Governments and industry around the world, are investing heavily in research and development into hydrogen fuel cells. 6. BIODIESEL Pure biodiesel is considered an alternative fuel under EPAct.Biodiesel (fatty acid alkyl esters) is a cleaner burning diesel replacement fuel that can be manufactured from vegetable oils, animal fats, or recycled restaurant greases. Biodiesel is safe, biodegradable, and using in a conventional diesel engine substantially reduces emissions of unburned hydrocarbons, carbon monoxide, sulfates, polycyclic aromatic hydrocarbons, nitrate d polycyclic aromatic hydrocarbons, and particulate matter. These reductions increase as the amount of biodiesel blended into diesel fuel increases.The use of biodiesel decreases the solid carbon fraction of particulate matter (since the oxygen in biodiesel enables more complete combustion to CO2) and reduces the sulfate fraction (biodiesel contains less than 15 ppm sulfur), while the soluble, or hydrocarbon, fraction stays the same or increases. Therefore, biodiesel works well with emission control technologies such as diesel oxidation catalysts (which reduce the soluble fraction of diesel particulate but not the solid carbon fraction). Blends of 20% biodiesel with 80% petroleum diesel can generally be used in unmodified diesel engines.Biodiesel can also be used in its pure form, but it may require certain engine modifications to avoid maintenance and performance problems and may not be suitable for wintertime use. Just like petroleum diesel, biodiesel operates in compression-ignit ion engines. Higher blends, even pure biodiesel (100% biodiesel ), may be able to be used in some engines (built since 1994) with little or no modification. 7. ELECTRICITY Electricity can be used as a transportation fuel to power battery electric vehicles, fuel cell vehicles and in limited use in hybrid-electric vehicles.Fuel cell vehicles use electricity produced from an electrochemical reaction that takes place when hydrogen and oxygen are combined in the fuel cell â€Å"stack. † The production of electricity using fuel cells takes place without combustion or pollution and leaves only two byproducts, heat and water. Even though the battery electric vehicle itself produces zero pollutants, when emissions from the power generating stations from traditional sources (coal, oil-fired or nuclear) are factored in, battery powered electric cars still produce less than 10 percent of the emissions of standard internal combustion engine cars.Clean electricity production is possible in future years since the wind and solar power generating stations are becoming as a sources. Maintenance for battery electric vehicles is less, which have fewer moving parts to service and replace, although the batteries must be replaced every three to six years. Plug-in hybrid electric vehicles (HEVs) are hybrid cars with an added battery. As the term suggests, plug-in hybrids – which look and perform much like â€Å"regular† cars – can be plugged in to a 120-volt outlet (for instance each night at home, or during the workday at a parking garage) and charged.Plug-ins run on the stored energy for much of a typical day's driving – depending on the size of the battery up to 60 miles per charge, far beyond the commute of an average American – and when the charge is used up, automatically keep running on the fuel in the fuel tank. A person who drives every day a distance shorter than the car's electric range would never have to dip into the fuel tank. M ost of the energy used by plug-ins comes from electricity and not from gasoline.That electricity can be generated efficiently and cleanly from America's abundant domestic energy resources, thus greatly reducing our dependence on imported oil. Unlike in the 1970s, when much of our electricity was generated from oil, today only 2% of our electricity is generated from oil. Hydrogen storage returns around 47% of original energy, while advanced batteries return 75-85%. According to the report, using electricity to charge electric vehicles (EVs) provides twice the miles per kilowatt hour than employing electricity to make hydrogen fuel.Lithium ion batteries developed for portable electronics can store electricity at an energy density about six times greater than conventional lead acid batteries and in the future could go nearly 250 miles between charges. 8. P-SERIES FUEL P-Series fuel is a mixture of natural gas liquids (pentanes plus), ethanol, and methyl tetrahydrofuran(MTHF), a biomass -derived co-solvent. P-Series is predominantly derived from renewable resources and burns much cleaner than gasoline. It can be mixed with gasoline in any proportion and is used in multi-fuel vehicles.Pure Energy Corporation holds the exclusive worldwide license to produce and supply P-Series fuel. Reference 1. Retrieved November 30, 2006, from http://oee. nrcan. gc. ca/transportation/fuels/hydrogen-fuelcells/hydrogen. cfm? attr=16 2. Retrieved November 30, 2006, from http://www. nrel. gov/vehiclesandfuels/hev/plugins. html 3. Retrieved November 30, 2006, from http://www. ethanol. org/e85. html 4. Plug-in Hybrid Vehicles. Retrieved November 30, 2006 from http://www. iags. org/pih. htm 5. K. R. Gerdes and G. J. Suppes. 2001. Miscibility of Ethanol in Diesel Fuels . Ind. Eng. Chem.Res. , 40 (3), 949 -956, 2001 6. A. C. Hansen, P. W. L. Lyne, and Q. Zhang, â€Å"Ethanol-Diesel Blends: A Step Towards Bio-based Fuel for Diesel Engines,† ASAE Paper No. 01-6048, July2001. 7. Hua Lu Karlsson. 2006. Emissions from Conventional Gasoline Vehicles Driven with Ethanol Blend Fuels. http://www. senternovem. nl/mmfiles/ ethanol_blend_emissions_in_conventional_vehicles_tcm24-195177. pdf. 8. U. S. Department of Energy. 2006. http://www. eere. energy. gov/ afdc/afv/prop_vehicles. html. 9. Ethanol Fact Book. 2005. www. cleanfuelsdc. org/pubs/ documents/2003EthanolFactBook. pdf.

Free Essays on Frederick Chopin

Frederic Chopin, the Polish composer and pianist, was born on March 1,1810, according to the statements of the artist himself and his family, but according to his baptismal certificate, which was written several weeks after his birth, the date was 22 February (Huneker, 2). His birthplace was the village of Zelazowa Wola, part of the Duchy of Warsaw. The musical talent of Frederic became apparent extremely early on, and it was compared with the childhood genius of Mozart (Marek, 23). Already at the age of 7, Frederic was the author of two polonaises, the first being published in the engraving workshop of Father Cybulski. The prodigy was featured in the Warsaw newspapers, and little Chopin became the attraction and ornament of receptions given in the aristocratic salons of the capital. He also began giving public charity concerts. His first professional piano lessons lasted from 1816 to 1822, when his teacher was no longer able to give any more help to a pupil whose skills surpassed his own (Seroff, 19). Wilhelm WÃ ¼rfel, a renowned pianist and professor at the Warsaw Conservatory, supervised the further development of Frederic’s talent. WÃ ¼rfel would offer valuable, although irregular, advice as regards playing the piano and organ to young Chopin (Marek, 51). Frederic later attended the Warsaw Lyceum where his father was one of the professors. He spent his summer holidays in estates belonging to the parents of his school friends in various parts of the country. The young composer listened to and noted down the texts of folk songs, took part in peasant weddings and harvest festivities, danced, and played a folk instrument resembling a double bass with the village musicians; all of which he described in his letters. Chopin became well acquainted with the folk music of the Polish plains in its authentic form, with its distinct tonality, richness of rhythms and dance vigor (Huneker, 41). When composing his first mazurkas in 1825, as w... Free Essays on Frederick Chopin Free Essays on Frederick Chopin Frederic Chopin, the Polish composer and pianist, was born on March 1,1810, according to the statements of the artist himself and his family, but according to his baptismal certificate, which was written several weeks after his birth, the date was 22 February (Huneker, 2). His birthplace was the village of Zelazowa Wola, part of the Duchy of Warsaw. The musical talent of Frederic became apparent extremely early on, and it was compared with the childhood genius of Mozart (Marek, 23). Already at the age of 7, Frederic was the author of two polonaises, the first being published in the engraving workshop of Father Cybulski. The prodigy was featured in the Warsaw newspapers, and little Chopin became the attraction and ornament of receptions given in the aristocratic salons of the capital. He also began giving public charity concerts. His first professional piano lessons lasted from 1816 to 1822, when his teacher was no longer able to give any more help to a pupil whose skills surpassed his own (Seroff, 19). Wilhelm WÃ ¼rfel, a renowned pianist and professor at the Warsaw Conservatory, supervised the further development of Frederic’s talent. WÃ ¼rfel would offer valuable, although irregular, advice as regards playing the piano and organ to young Chopin (Marek, 51). Frederic later attended the Warsaw Lyceum where his father was one of the professors. He spent his summer holidays in estates belonging to the parents of his school friends in various parts of the country. The young composer listened to and noted down the texts of folk songs, took part in peasant weddings and harvest festivities, danced, and played a folk instrument resembling a double bass with the village musicians; all of which he described in his letters. Chopin became well acquainted with the folk music of the Polish plains in its authentic form, with its distinct tonality, richness of rhythms and dance vigor (Huneker, 41). When composing his first mazurkas in 1825, as w...

High School Finals vs. College Finals

High School Finals vs. College Finals Finals are the most pleasant time of the year with all of those books and lecture notes, sleepless nights and gallons of coffee. Okay, we are kidding! Who in the world loves finals? However, even if you are in high school and hate finals, it doesnt mean that you dont want to be mentally prepared for final sessions which await you in college. Or, maybe you are already a college student and want to refresh high school finals in your memory to complain that those kids from high school dont know yet how lucky they are. So, what are the main differences between high school finals and college finals? Which are harder? We have prepared a comparative list just for curious guys like you. High School Finals A lot of college students say that high school finals are childs play. They are much easier and less stressful than the finals in college. We dont mean that finals in high school are as easy as pie. But they are not that big deal. Usually, your tests in high school worth about 15% of the grade and contain only the information that you were studying in class. Surely, they require preparation and  reviewing the materials. You might also need to do online tests and quizzes or study with your friend using question cards. Eat well, have enough sleep, look through your notes before the test and dont panic too much – these are the basic tips for every high school student who wants to pass finals successfully. But if you think that high school finals are the most intense time you experience during academic studying, then we, actually, should tell you the bad news. College finals are nothing like high school ones. College Finals College classes might cover certain materials which you have already studied in high school. For example, a certain book, a poem or historical events. But the approach to studying is very different in college. It requires in-depth research and analysis. Thats why its not surprising that you have to conduct a lot of research while doing college homework. In class, you are provided with essential basis – a skeleton that allows you to build your knowledge around it. Your motivation and your aspiration are the main factors which define your ability to pass the test. So, examining scholarly sources recommended by your professor is not just an option – its â€Å"a must† for you. Otherwise, you wont be able to pass the test. A pro tip: If you are looking for other tips for improving your grades, check out our advice on how you can become an A-level student. The Importance College finals are all about hard work. You can see hundreds of half-asleep students walking around the campus during this period. Grades for finals make 50% of your final grade which causes extra pressure. Final tests are also about managing your schedule as its hard to study well and have part-time job, social life, and hobbies. So, its not surprising that the words â€Å"college finals week† can be found in a student vocabulary somewhere in between â€Å"apocalypse† and â€Å"insomnia.† How to Survive Finals Week So, are there any chances to survive through the college finals week and keep your sanity? Of course, there are. Many students successfully pass their tests if they put enough effort into studying through the semester or if studying hard right before the finals. If you are a college student, then you probably know what the main things that a student needs throughout the finals and a dead week are – something that can be called a college finals survival kit. Basically, such a kit should contain: Stickers, markers, and bookmarks – because you have to look through millions of pages and need to mark the most important things. Candies, cookies, and chocolate bars – because you need to boost your brain activity and reduce stress with sugar or some healthy energy booster food. Energy drinks and coffee – because you will need to spend a lot of time studying and not falling asleep. Caution: be careful with caffeine as its not completely safe.    By the way, the worst thing you can do is pulling all-nighters as this way you will just waste your time. When you are stressed and asleep, especially if studying for too long, your brain cant perceive and remember information properly. That means that you will spend these sleepless nights in vain. Summarizing: The Key Differences So, lets take a look at the key differences between high school and college finals. The Value Finals in high school make up to 15% of your grade, thats why they wont define the final score as much as tasks you completed throughout the studying year. College finals, in their turn, make up to 50% of the grade which causes much pressure, as you can fail the course only because of an unlucky day. The Place for Studying As a high school student, you probably wonder why so many college students prefer having studying sessions in the library? Thats because they need a quiet place that can get them into the right mood to have long studying sessions without being distracted by different factors like noisy roommates. High school students usually study for their tests at home or in places like a buffet, park, etc. The Materials When studying for high school finals, you usually just have to look through the notes you wrote down in class. College students usually can be spotted with tons of books around them and browsing through articles and other sources on the internet. The Difficulty High school finals usually contain predictable questions that you can prepare beforehand. In college, the difficulty of the questions depends on the professors decision only. So, be sure to avoid spoiling your relationship with your professor if you want to pass your college exams. So, these were the main differences between high school and college exams. If you are curious about what other differences between high school and college are, check out our article! Have something to add? Just let us know!

Aortic Dissection Research Paper Example | Topics and Well Written Essays - 500 words

Aortic Dissection - Research Paper Example Other persons complain of shortness of breath, arm and leg pains, weakness and loss of consciousness. If arteries supplying the heart are affected, it may result in heart attack. If the arteries supplying blood to the brain are affected the patient may suffer a stroke. Diagnosis of aortic dissection includes a complete examination of blood pressure, heart, and pulses. An electrocardiogram may be used to show complications of the dissection. X-rays may be used to show enlarged aorta. However, x-ray and ECG may fail to show aortic dissection. The most efficient and frequently used tests to diagnose aortic dissection include a computed tomography scan, transesophageal echocardiogram, and magnetic resonance imaging. Therefore, accurate diagnosis of the condition is critical for reducing the mortality rates of patients facing aortic dissection. The goals of treating a patient diagnosed with aortic dissection are to control the team, find out whether the repairing the tear may benefit the patient and treating any other associated complications. The tear can be controlled by reducing the blood pressure as much as possible. Various medications are available to reduce blood pressure and lower heart rate. Such blockers include diltiazem and verapamil. Based on the evaluation of the patient, surgical treatment may be considered. Immediate surgery may be considered for a patient diagnosed with type A dissection. For type B dissection, medical treatment is usually considered and surgical treatment is not recommended.