Bethoven and Joseph Haydn's relationship Essay Example | Topics and Well Written Essays - 250 words

Bethoven and Joseph Haydn's relationship - Essay Example Their relationship is said to have become sour and started to decline due to Haydn’s insistence that Beethoven mentions him as his student in one of his composition. Beethoven had a temper and was impatient and this only added to declining their relationship even further than it already was. The success of Haydn’s musical career became a source of envy for Beethoven. All in all, Haydn taught Beethoven very greatly and he contributed greatly to the success of Beethoven’s musical career despite their constant fall out. His constant absence also taught Beethoven to be independent and be confident of his own compositions based on the lessons he had and was receiving from Haydn. In spite of the sour relationship between the student and the tutor, they maintained a cordial relationship and Beethoven also kept in touch with his tutor way after he had stopped becoming his student and it continued that way till Haydn passed away. Haydn also admired his student’s determination and success and was proud of what he had achieved under the numerous tutors including him (Schindler and MacArdle,

Action Potential Essay Example for Free

Action Potential Essay What opens first in response to a threshold stimulus? Voltage Gated (activation gates) Na+ channels open and Na+ diffuses in the cytoplasm What characterizes depolarization, 1st phase of action potential? Membrane changes from a negative value to a positive value What characterizes repolarization, 2nd phase of action potential? Once the membrane depolarizes to a peak value of 30+, it repolarizes to to its negative resting value of -70 What event triggers the generation of an action potential? The membrane potential must depolarize from the resting voltage of -70 mV to a threshold value of -55 mV. ( This is the minimum value required to open enough voltage-gated Na+ channels so that depolarization is irreversible.) What is the first change to occur in response to a threshold stimulus? Voltage-gated Na+ channels change shape, and their activation gates open Resting State All gated Na+ and K+ channels are closed Step 2 Depolarization; Na+ Channels Open During the depolarization phase of the action potential, open Na+ channels allow Na+ ions to diffuse into the cell. This inward movement of positive charge makes the membrane potential more positive (less negative). The depolarization phase is a positive feedback cycle where open Na+ channels cause depolarization, which in turn causes more voltage-gated Na+ channels to open. Step 3 Repolarization; Na+ channels are inactivating and K+ Channels Open Step 4 Hyperpolarization; Some K+ channels remain open and Na+ channels reset How many gates/states do voltage gated Na+ channels have? two gates and three states Closed Na+ at the resting state, no Na+ enters the cell through them Opened Na+ opened by depolariztion, allowing Na+ to enter the cell Inactivated channels automatically blocked by inactivation gates soon after they open How many gates/states do voltage gated K+ channels have? one gate, two states Closed K+ at the resting state, no K+ leaves Opened K+ at depolarization, after delay, allowing K+ to leave Why is an action potential self-generating? depolarizing currents established by the influx of Na+ flow down the axon and trigger an action potential at the next segment The Na+ diffusing into the axon during the first phase of the action potential creates a depolarizing current that brings the next segment, or node, of the axon to threshold. Why does regeneration of the action potential occur in one direction, rather than in two directions? The inactivation gates of voltage-gated Na+ channels close in the node, or segment, that has just fired an action potential At the peak of the depolarization phase of the action potential, the inactivation gates close. Thus, the voltage-gated Na+ channels become absolutely refractory to another depolarizing stimulus. What changes occur to voltage-gated Na+ and K+ channels at the peak of depolarization? Inactivation gates of voltage-gated Na+ channels close, while activation gates of voltage-gated K+ channels open Closing of voltage-gated channels is time dependent. Typically, the inactivation gates of voltage-gated Na+ channels close about a millisecond after the activation gates open. At the same time, the activation gates of voltage-gated K+ channels open. What marks the end of the depolarization phase? As voltage-gated Na+ channels begin to inactivate, the membrane potential stops becoming more positive This marks the end of the depolarization phase of the action potential. Then, as voltage-gated K+ channels open, K+ ions rush out of the neuron, following their electrochemical gradient. This exit of positively-charged ions causes the interior of the cell to become more negative, repolarizing the membrane. The repolarization phase of the action potential, where voltage becomes more negative after the +30mV peak, is caused primarily by __________. The opening of voltage-gated K+ channels allows K+ ions to exit the cell, repolarizing the membrane. In other words, the exit of K+ ions makes the membrane potential more negative. K+ also exits through leakage channels during this phase because leakage channels are always active. However, most of the membrane permeability to K+ during this phase is due to voltage-gated channels. Voltage-gated K+ channels make the action potential more brief than it would otherwise be if only leakage channels were available to repolarize the membrane. During an action potential, hyperpolarization beyond (more negative to) the resting membrane potential is primarily due to __________. The large number of voltage-gated K+ channels opening during the repolarization phase quickly makes the membrane potential more negative as positively-charged K+ ions leave the cell. K+ ions continue to leave through open channels as the membrane potential passes (becomes more negative than) the resting potential. This hyperpolarization phase of the action potential is therefore due to K+ ions diffusing through voltage-gated K+ channels. The membrane potential remains more negative than the resting potential until voltage-gated K+ channels close. This period of hyperpolarization is important in relieving voltage-gated Na+ channels from inactivation, readying them for another action potential. During the hyperpolarization phase of the action potential, when the membrane potential is more negative than the resting membrane potential, what happens to voltage-gated ion channels? Voltage-gated K+ channels are opened by depolarization. This means that as the membrane potential repolarizes and then hyperpolarizes, these K+ channels close. With the closing of voltage-gated K+ channels, the membrane potential returns to the resting membrane potential via leakage channel activity. Resetting voltage-gated Na+ channels to the closed (but not inactivated) state prepares them for the next action potential. During the hyperpolarization phase of the action potential, voltage eventually returns to the resting membrane potential. What processes are primarily responsible for this return to the resting membrane potential? Voltage-gated K+ channels close. K+ and Na+ diffuse through leakage channels.

Sam Walton :: essays research papers

Sam Walton a small-town merchant who had operated a variety of stores in Arkansas and Missouri, Walton was convinced that consumers would flock to a discount store with a wide array of merchandise and friendly service. When Sam Walton opened his first Wal-Mart Store in 1962, it marked the beginning of an American success story that no one could have predicted. Wal-Mart is a place where prices are low and value and customer service are high every day. Because Wal-Mart carefully controls expenses to maintain its low price structure, customers do not have to wait for a sale to realize savings. Sam Walton had no idea his business would take off like it has. Today, years after his death, the company is still growing steadily. He never thought that his little $25,000 investment in a retail store would be a huge success, but Walton had an idea that no one had ever thought of. This would be the thought that would not only change his life, but the lives of millions of customers as well. The creator of K-mart Said he fabricated up the idea that if he offered well-know brands and sold them around 15% cheaper than other retailers, then this would make them a powerful source in the retail business, and little did the creator of K-mart knew Walton was right. Regarded by many as the entrepreneur of the century, Walton had a reputation for caring about his customers, his employees and the community. Walton proved to be a visionary leader and was known for his ability to quickly learn from his competitors' successes and failures. In fact, the creator of Kmart once claimed that Walton "not only copied our concepts, he strengthened them. Sam just took the ball and ran with it". In the 70’s and 80’s K-mart wasn’t going into towns that had a population lower than 50,000 people, so Walton decided that he would put his stores in small towns that all the major retailers were ignoring. As Walton stated, â€Å"When people want to simplify the Wal-Mart story that’s usually how they sum up the secret of our success, â€Å"Oh, they went into small towns when nobody else would.†Ã¢â‚¬  Walton realized early on that he couldn’t build stores in just large cities like his competitors. So realizing this, he built his stores around his distribution centers and warehouses, in which each store was no more than a days drive away.

Fashions Influence Essay

Fashion is a popular thing for a period of time. It keeps changing and developing. Fashion and trend are very similar however fashion is almost always related with the way people dress. Trends are related more with technology and such. When asked the question ‘What is fashion?’ globally known model, icon and business woman Claudia Schiffer replies with ‘It’s become synonymous with clothing but ultimately fashion is anything popular in a culture at any given time.’ The same question was asked to Pulitzer prize winning fashion writer Robin Givhan and she replies with ‘For me, fashion is the way we choose to present ourselves in the public square. It captures whether or not we choose to be on the trend, but also addresses those people who have a belligerence towards fashion and are very stern in the announcing of their lack of interest in the subject.’ see more:why fashion is important Also head of the iconic Prada fashion conglomerate, Miuccia Prada, says one element of fashion is so simple it’s often overlooked: ‘Fashion is the ï ¬ rst step out of poverty. You have nothing and then you put something on. It is one of the ï ¬ rst things you do to elevate yourself. Why are people scandalized by spending money on clothes? Everybody is so passionate about this, there’s a resistance to fashion, an idea that to love fashion is to be stupid. Clothes are very intimate. When you get dressed, you are making public your idea about yourself, and I think that embarrasses people.’ The common idea here is that fashion is a way of self-expression. Fashion is very important because it is mean of self-expression, enabling us to say something important to the world about who we are, what we want and about whom we want to be. The clothes we wear say things about us whether we want it or not. It addresses to the human need to belong, to identify ourselves with a group of others like us. It can be a lifestyle, a religion, a profession, or an attitude. For example there are terms in society, which refers to a particular group of profession and their stereotyped clothing such as white-collar worker. A white-collar worker is someone who performs managerial, professional or administrative work. Typically they work in office or cubicles. And then there are blue-collar workers whose job requires manual labor. Clothes show a lot about us, maybe even more than we think. There are prejudices and stereotypes about them, which are usually true since stereotypes are there for a reason. Fashion and trends also show our socio economic level. For example if one is wearing a $15000 suit with a Rolex on his arm you would automatically assume he is someone important. There are some indicators for this in the eyes of society; in this case it was the watch he was wearing. One of the biggest indicators is the phone he is using. Especially in our country there are millions of people who barely afford feeding their kids but they buy phones that are worth 4 months of their salary. Fashion and trends are important in the eyes of people since others form a profile of us at first sight. First impression is really important and these are what makes other people think you are some kind of a ‘big shot’. Some companies abuse this need of self-expression. Once fashion was movie stars and models wearing haute couture on glossy magazine covers. People saved money and shopped once or twice a year for high-quality clothes that could be worn for many seasons. However in todays world fashion is changing very fast and it is cheap thanks to retail brands such as H&M, Zara. Fashion is more accessible than ever. But is it a good thing? Researches show otherwise. The average price of clothing has dropped vastly in the past decades and cheap clothing is branded such that it is no longer seen as a lack of fashion. Rather it is called ‘street fashion’. However the demand raises everyday and this created a huge waste. For example US writer Elizabeth Cline says: ‘Then one day came the epiphany. In a supermarket sale, I ended up buying seven pairs of identical canvas flats marked down from $15 to $7.’ She also explains perfectly how this ruins the whole fashion=a mean of self-expression thing: ‘Buying so much clothing, and treating it as if it is disposable, is putting a huge toll on the environment and is simply unsustainable,† she writes. What’s more, cheap clothing destroys our relationship with our self-image. Fashion should be flexible and reflect personal taste. But global chains are trying to reduce risk by selling the same carefully packaged trends. These trends â€Å"are repeated on the racks of virtually every retailer, making our store-bought looks feel homogenous and generic.’ There was a time when the concept of fashion was only in the occasions.  Teenagers today care a lot about fashion. Maybe more than what should be. Fashion reflects a lot in the school students. The bags they carry, the watches they wear and such. Teenagers seem to be more in to fashion than the adults. In the old times fashion was something for the upper class but as mentioned above now it is not the case. Class doesn’t matter in any way for becoming fashionable. Nowadays being fashion conscious makes you popular among your friends an also boosts your self-confidence. Especially teens are so concerned with fashion that they do not spend enough time doing productive stuff; instead they read fashion magazines. In the past teens went out with their parents in the weekends. Nowadays they go out with their friends and most favorable place to go out is a shopping mall since they can do a lot of shopping there apart from having actual fun. Again in the past children used to dream becoming a scientist, an astronaut, a doctor, an engineer but the priority changed for the teenager of today’s world. Most of them desire being in the glamour world. They find fashion world better than any other profession. In fact one that is not fashion conscious these days don’t get much attention. One who appears trendy in the first appearance takes away all the light. The reason of this is mainly peer pressure. Many teens are concerned about trends in an effort to dodge a possible humiliation and mocking from the peers. Poor fashion choices are often a reason for mockery. Teens today feel the need of being a part of a group and the easiest way to do so is to match their clothing code. Fashion becomes an essential accessory for a teenager’s popularity. Referring to a survey of 47 people asking whether they think importance of fashion and trends to teens is excessive or not 36 of them answered by saying that it is excessive. This causes problems such as less time spent on beneficiary work and more time spent on keeping up with the trends. Also since fashion became cheaper and more accessible a vast amount of waste comes with it. In conclusion fashion and trends are extremely important for teens even though it should not be. As said by the famous designer Yves Saint-Laurent: ‘Fashions fade, style is eternal.’ SOURCES: Pru, Laura. ‘Pressure on teens to wear fashionable clothes’ eHow LaGrave, Katherine. ‘Fashion: Why is it important?’ Huffington Post 06/04/2012 Shah, Vika. ‘The role of fashion in human culture’ Thought Economics 09/15/2012 Meetehariyani, ‘The importance of style and fashion’ StudyMode March 2012 Aeysha, Mona. ‘The Effect of Fashion on Teenagers in School’ Self Growth Peacock, John. ‘Fashion since 1900 : the complete sourcebook’ London, Thames&Hudson 2007: Priny Seeling, Charlotte. ‘Fashion: The Century of the designer 1900-1969’ Cologne,Germany Kà ¶nemann 2000: Print

Human Nature in The Great Gatsby Essay

Human nature refers to the general psychological characteristics, feelings, and behavioral traits of humankind, regarded as shared by all humans. F. Scott Fitzgerald with the use of selection of detail, selective diction, and imagery, portrays both condescending and bona fide aspects of human nature. Death brings denial, memories, remorse, and perspective. To Nick Carraway, who is utterly incredulous and lachrymose over Gatsby’s death, the passing-away of a dear friend is a period of reflection. Denial is the most prominent psychological aspect following one’s death. â€Å"Gatsby’s house was still empty when I left. Fitzgerald implies that Nick is waiting upon Gatsby’s return — the return to normalcy. But the period of stagnation lingers and Nick continues to reminisce on the past. Fitzgerald invokes imagery by appealing to the five senses. Nick is trying to relive the condition of Gatsby’s infamous house parties by spending his Saturday nights in New York. The â€Å"gleaming, dazzling parties† draw out the visuals of a celebratory scene. The â€Å"music and the laughter, faint and incessant† excites the aural senses and characterizes the mood of the party. Nick begins to notice the most dismissive and discreet details. He acknowledges the length of the Gatsby’s unmanaged lawn as compared to his, in which he posed little to no interest prior to the death. Juxtaposing his brief observation is one far more conspicuous. â€Å" One of the taxi drivers in the village never took a fare fast the entrance gate without stopping for a minute and pointing inside†¦perhaps he had made a story about it all his own. † Nick takes to mind the change in attitude and persona of those who were acquaintances of Gatsby. His death brings a cessation to lively parties and expansive gifts. Therefore, they who once lauded and idolized Gatsby, act as if one has never heard of him. The cruel and selfish face of human nature proves to be nothing less than pathetic. Nick concludes Gatsby’s story by paying attention to the green light and reminiscing Gatsby’s extraordinary spirit and pursuit to come as far as he did. â€Å"Gatsby believed in the green light, the orgastic future that year by year recedes before us. It eluded us then, but that’s no matter –– to-morrow we will run faster, stretch out our arms farther†¦so we beat on, boats against the current, borne back ceaselessly into the past. † Gatsby’s spirit and passion will continue on in those who remember him most.

The Laws and Governmental Structure of Iran

The Laws and Governmental Structure of Iran In the spring of 1979, Irans Shah Mohammad Reza Pahlavi was ousted from power and the exiled Shia cleric Ayatollah Ruhollah Khomeini returned to take control of a new form of government in this ancient land in what has become known as the Iranian Revolution in 1979. On April 1, 1979, the Kingdom of Iran became the Islamic Republic of Iran after a national referendum. The new theocratic government structure was complex  and included a mixture of elected and unelected officials. Who is who in Irans government? How does this government function? The Supreme Leader At the apex of Irans government stands the  Supreme Leader. As head of state, he has broad powers, including command of the armed forces, appointment of the head of the judiciary and of half of the Guardian Councils members, and confirmation of presidential election results. However, the Supreme Leaders power is not entirely unchecked. He is selected by the Assembly of Experts, and could even be recalled by them (although this has never actually happened.) So far, Iran has had two Supreme Leaders: the Ayatollah Khomeini, 1979-1989, and the Ayatollah Ali Khamenei, 1989-present. The Guardian Council One of the most powerful forces in Irans government is the Guardian Council, which consists of twelve top Shia clerics. Six of the council members are appointed by the Supreme Leader, while the remaining six are nominated by the judiciary and then approved by the parliament. The Guardian Council has the power to veto any bill passed by parliament if it is judged inconsistent with the Iranian Constitution or with Islamic law. All bills must be approved by the council before they become law. Another important function of the Guardian Council is the approval of potential presidential candidates. The highly conservative council generally blocks most reformists and all women from running. The Assembly of Experts Unlike the Supreme Leader and the Guardian Council, the Assembly of Experts is directly elected by the people of Iran. The assembly has 86 members, all clerics, who are elected for eight-year terms. Candidates for the assembly are vetted by the Guardian Council. The Assembly of Experts is responsible for appointing the Supreme Leader and supervising his performance. In theory, the assembly could even remove a Supreme Leader from office. Officially based in Qom, Irans holiest city, the assembly often actually meets in Tehran or Mashhad. The President Under the Iranian Constitution, the President is head of the government. He is charged with implementing the constitution  and managing domestic policy. However, the Supreme Leader controls the armed forces and makes major security and foreign policy decisions, so the power of the presidency is rather sharply curtailed. The president is elected directly by the people of Iran for a four-year term. He can serve no more than two consecutive terms  but can be elected again after a break. That is to say, for example, that a single politician could be elected in 2005, 2009, not in 2013, but then again in 2017. The Guardian Council vets all potential presidential candidates and usually rejects most reformers and all women. The Majlis - Iran's Parliament Irans unicameral parliament, called the Majlis, has 290 members. (The name literally means place of sitting in Arabic.) Members are directly elected every four years, but again the Guardian Council vets all candidates. The Majlis writes and votes on bills. Before any law is enacted, however, it must be approved by the Guardian Council. Parliament also approves the national budget and ratifies international treaties. In addition, the Majlis has the authority to impeach the president or cabinet members. The Expediency Council Created in 1988, the Expediency Council is supposed to resolve conflicts over legislation between the Majlis and the Guardian Council. The Expediency Council is considered an advisory board for the Supreme Leader, who appoints its 20-30 members from among both religious and political circles. Members serve for five years  and may be reappointed indefinitely. The Cabinet The President of Iran nominates the 24 members of the Cabinet  or Council of Ministers. Parliament then approves or rejects the appointments; it also has the ability to impeach the ministers. The first vice-president chairs the cabinet. Individual ministers are responsible for specific topics such as Commerce, Education, Justice, and Petroleum Supervision. The Judiciary The Iranian judiciary ensures that all laws passed by the Majlis conform with Islamic law (sharia)  and that the law is enforced according to the principles of sharia. The judiciary also selects six of the twelve members of the Guardian Council, who then must be approved by the Majlis. (The other six are appointed by the Supreme Leader.) The Supreme Leader also appoints the Head of the Judiciary, who selects the Chief Supreme Court Justice and the Chief Public Prosecutor. There are several different types of lower courts, including public courts for ordinary criminal and civil cases; revolutionary courts, for national security matters (decided without provision for appeal); and the Special Clerical Court, which acts independently in matters of alleged crimes by clerics, and is overseen personally by the Supreme Leader. The Armed Forces A final piece of the Iranian governmental puzzle is the Armed Forces. Iran has a regular army, air force, and navy, plus the Revolutionary Guard Corps (or Sepah), which is in charge of internal security. The regular armed forces include approximately 800,000 troops total in all branches. The Revolutionary Guard has an estimated 125,000 troops, plus control over the Basij militia, which has members in every town in Iran. Although the exact number of Basij is unknown, it is probably between 400,000 and several million. The Supreme Leader is Commander-in-Chief of the military  and appoints all top commanders. Due to its intricate set of checks and balances, the Iranian government can get bogged down in times of crisis. It includes a volatile mix of elected and appointed career politicians and Shia clerics, from ultra-conservative to reformist. Altogether, Irans leadership is a fascinating case study in hybrid government - and the only functioning theocratic government on Earth today.

Individualized Education Programs That Support Self Esteem

Individualized Education Programs That Support Self Esteem Self-esteem has fallen from the pinnacle of academic and scientific practice.  There is not necessarily a direct link between self-esteem and academic success. Resilience is getting a great deal of attention because the culture of coddling children for fear of injuring their self-esteem often discourages them from risk-taking, which has been shown to be related to success in school and life. Still, children with disabilities do need some extra attention paid to activities that will build their ability to take those risks, whether we call that resilience or self-esteem.   Self Esteem and Writing Positive Goals for IEPs The IEP, or Individualized Education Program- the document that defines the students special education program- should attend to ways in which instruction is mediated and success is measured that will enhance a childs self-confidence and lead to further success.   Certainly, these activities need to reinforce the kind of academic behavior you want, while at the same time pairing the childs sense of self-worth to success in school activities. If you are writing an IEP to ensure that your students will be successful, you will want to make sure that your goals are based on the students past performance and that they are stated positively. Goals and statements must be relevant to the students needs. Start slowly, choosing only a couple of behaviors at a time to change. Be sure to involve the student, this enables him/her to take responsibility and be accountable for his/her own modifications. Be sure to provide some time to enable the student to track and or graph his/her successes. Accommodations to Develop and Enhance Self-Esteem: Academic expectations will be reduced to ensure success. Be very specific about the exact curricular expectations that will be omitted or modified. Recognize and reward quality performance.Student strengths will be highlighted by recording and sharing evidence of growth.Honest and appropriate feedback will occur on a regular basis.Opportunities for the student to demonstrate strengths will be maximized as often as is possible. This could include, oral presentation and opportunities for the child to share his responses as long as the child is ready and can be successful.The student will be encouraged to become involved in extracurricular activities that support his/her interests and strengths.The student will use a form of personal expression which will include teacher response/feedback through a journal, one to one, or computer entries. Goal-Writing Tips Write goals that can be measured, be specific as to the duration or the circumstance under which the goal will be implemented and use specific time slots when possible. Remember, once the IEP is written, it is imperative that the student is taught the goals and fully understands what the expectations are. Provide him/her with tracking devices, students need to be accountable for their own changes.