Monday, September 30, 2019
Compare the attitudes to war in the three poems Essay
ââ¬ËRule Britanniaââ¬â¢ was written in 1740. The title ââ¬ËRuleââ¬â¢ causes the reader to think that this is a command by God. Rule Britannia is an extremely patriotic poem which creates the image that Britain is the place of the Lord and Britain is the best. This image is implied by: ââ¬ËArose from out the azure land, This was the charter of the land, And guardian angels sung the strainââ¬â¢ This quotation would make the reader think that Britain was born from the sea, by guardian angels who are the messengers from God. This implies that God created Britain and how it came out from the sea, so we Britain should rule the sea. Another way that the patriotic image is implied is by the chorus: ââ¬ËRule, Britannia, rule the waves; Briton never will be slaves.ââ¬â¢ This leads the reader to think that the British are extremely arrogant, how they think they will never be slaves also how Britain think they are the Gods of the sea. A 21st century reader would of seen this poem as patriotic and arrogant but a person reading this in 1740 would of seen this as true. Britain did rule the sea and the British at the time would have never thought they would be slaves, they thought they were too big and important for that. This poem is very rude about other countries in particular Spain. James Tompson describes other countries as ââ¬Ë Tyrantsââ¬â¢, in the context that this word is used it implies that other countries are arrogant harsh arbitrary people, some readers my think that the use of tyrant is referring to these foreigners being criminals. This is another way that the poem shows arrogance, how the Britain is great and how all the other countries are criminals. The writer uses the image of the oak tree to create a patriotic image again: ââ¬ËStill more majestic shalt thou rise, More dreadful from each foreign stroke; As the loud blast that tears the skies Serves but to only root thy native oak.ââ¬â¢ What this is saying basically is that every time Britain gets attacked it gets stronger. When an oak tree normally gets hit with thunder of lightning( a metaphor for canon fire from Britainââ¬â¢s enemyââ¬â¢s) which is being implied in line three of that quotation you would expect it to get destroyed and split in half. This does not happen though, it just makes Britain stronger. This would create an extremely patriotic image of how Britain is just getting stronger from each attack and how the enemy is never going to destroy Britain. Near the end of this poem another patriotic image is created, ââ¬Ë and manly hearts to guard the fair.ââ¬â¢ This implies the image that the British guard their women and how the British are true gentlemen. Rule Britannia sees war as a holy thing, war is something that God would not condemn. This is achieved by the chorus ââ¬ËRule, Britannia, rule the waves;ââ¬â¢ this gives the impression that Britain should rule the waves, the word rule is used in an interesting way. When I first read this poem I thought that the word was Royal, as in it was a holy thing. I believe this is a deliberate effect, the word rule is there to make the reader think that Britain should rule the sea but I think it is also there deliberately as a simile to make the reader to think of Royal which would make the reader think that ruling the sea is a command from God. If it was a command from God it would mean that he was telling Britain to rule the sea so fight any wars they need to accomplish this. Rule Britannia is a very confident poem, no where in the poem does doubt creep in. . ââ¬ËRule, Britannia, rule the wave Briton will never be slavesââ¬â¢ When you read this you see the image of people singing this loud, confident of what they have to do. This implies that this poem is for war, the writer James Tompson implies that war is a jolly thing something that has to be done, this is accomplished by the poem. The chorus of poem is meant to be sung, when I think of singing I associate it with singing things which are right and merry, it is not very often you sing about sad things, when the poem was written James tompson knew this and deliberately made it so the chorus would be sung. In Royal Britannia they poet fails to mention of the negative, he even goes to the extent of saying that war just makes Britain stronger, this can be seen in my third quote on page 1. This helps to build the confidence of the poem because no negatives have been mentioned; this is implying that there are no negative things about war. The charge of the light brigade is very confident on the surface but then some doubt seems to creep in. The crucial line in this poem is ââ¬ËSome one had blundered:ââ¬â¢ this line is extremely impersonal. It is the first sign of doubt creeping in. Later on in the charge of the light Brigade the same line is repeated twice, this line is ââ¬Ë All the world wonderedââ¬â¢. This line shows that people were question why these men were fighting, what was the point of this. This view of doubt never entered the first poem, it was like everyone was agreed that war was a great thing, in the second poem this doubt comes in and Tennyson is showing that not everyone thinks that war is so glorious. Unlike the Rule Britannia the charge of the light Brigade mentions negative things about war. I believe Tennyson is trying to show the reader that the war is not all great, people do die. As I mentioned before the line about someone blundering is extremely impersonal, this implies to the reader that in war there are no individuals, everyone is just seen as cannon fodder, if you die no one cares. The way the line is said makes this event sound like it happens often, normally when someone blunderers or dies you would be shocked but the way it is said makes it sound like a common event of war, Tennyson has deliberately not used !, I believe this is him trying to show there is no shock. In war there are deaths all the time, it is nothing special I believe this is what the author is trying to show. Rule Britannia sees war something that is necessary, it needs to be done to control the ââ¬Ëtyrantsââ¬â¢, without war these ââ¬Ëcriminalsââ¬â¢ would take the seas, Rule Britannia even gives the impression that the ruling the sea is a command from God. The charge of the light brigade is completely opposite to the view that war is backed by God, Tennyson associates war with death, ââ¬ËBack from the mouth of Deathââ¬â¢, this implies that when these men where charging they were going into hell, so they when they fight and have a war they are entering hell, Tennyson is saying that was is thing of the Devil so it is evil. The charge of the light brigade implies that war creates heroes. This can be seen by ââ¬ËStormed at with shot and shell. ââ¬ËWhile horse and hero fellââ¬â¢ and ââ¬ËHonour the charge they made Honour the light Brigadeââ¬â¢ When the soldiers started they were described in a very impersonal way, now they are being described as heroes. This would make the reader think that the poet opinion is that the people who fight in war become heroes. The charge of the light Brigade was written 1854. The word ââ¬Ëchargeââ¬â¢ implies the image that this attack was very uncontrolled, unorganised attack. The charge of the light Brigade is very confident on the surface but doubt does creep in the further you go in. This poem has a rhyme which imitates horses galloping. All through the charge of the light brigade there are associations with death and the devil, ââ¬ËJaws of hellââ¬â¢ and ââ¬Ë Into the valley of Deathââ¬â¢. The charge of the light Brigade has two endings, the first one was edited so it was suitable for the reader. The ending which is printed in this booklet honours the men who took part in the charge more that the other ending. The second ending describes the actions of the men as ââ¬Ëboldââ¬â¢, this implies that the actions of the men were stupid and not thought out. To be continued.
Sunday, September 29, 2019
Jan Van Eyck Madonna in the Church
Madonna in a Church is a small oil panel on oak by Flemish painter Jan van Check. Madonna in a church was made between c. 1438-1440. Van Check has been traditionally credited with the invention of painting in oils, and, although this is incorrect, there is no doubt that he was the real master of the technique. The use of oil paints is very significant in this artworks luminescent quality and presentation of space. The artist creates a new relationship between the viewer and the picture.There is an illusion of a modern, tatterdemalion's scene and through this new more attraction, lifelike approach, the viewer becomes connected to the painting, not Just in physical terms, but socially, spiritually and emotionally as well. â⬠The minute we look at it the shimmering quality of the art stands out. Being only 12. 25â⬠³ x 5. 5â⬠³ it's clear why its elaboration is so astonishing. The painting is very long compared to its width, emphasizing the size of the Madonna and the tall st ructure of the church that it portrays.The artwork has brilliant intense warm colors, dominating brown and red and the light illustrated with light yellow. On Madonna in a Church, the artist represents a variety of subjects with striking legalism in microscopic detail. The pigment was suspended in a layer of oil that also trapped light, this way Van Check created a Jewel-like medium. On the Madonna's crown and Jewelry we see shiny precious metals and gems and also, with the help of this technique he could give a life like impression to light. The colors are so luminous that the passage of five hundred years has barely diminished them.There are so many details and elements to discover on the painting that the eye has a constant exercise inside the picture. From the first view we can tell that the artwork is narrative and descriptive. Van Check had a sharp edged look of the world but he put this look into a fictional environment. The painting was stolen in 1877 and the frame was not f ound. Despite this absence we still have an impression of a frame because the cathedral interior is viewed at an angle. From this perspective the doorway has a frame effect to the painting.The shape of the doorway is round, following the ceiling and with this circle effect leading our eyes to the main figure, Mary. â⬠Van Check has followed traditional theology; his realist art displayed in iconic and allusive forms the Church's teachings and popular piety. Yet at the same time, he played with symbolism, which is evidently present in the artwork. The Madonna's size is surreal, very big in proportion to the interior of the exceptionally beautiful church. This is a symbolic niche, giving her all the importance. Byzantine painters used this method for the same purpose.In the background, angels appear to be singing from hymn books or saying Mass before her altar. â⬠The image of light has a heavy vision, the rays of the sun come supernaturally from the north to strike through the glass and hit the floor with breathtaking realism. Two lolls of sunlight on the floor in front of Mary come from a direction that defies natural law. Therefore the light is mystical, a symbol of God. We can see it penetrating the church Just as the Holy Ghost entered and impregnated the body of the Virgin, in direct opposition to the laws of flesh.The perspective and lighting seem to be so natural, until we think about it we don't see that it's unnatural, and that it is actually a sacred light. Maybe this is a way to express that what is religious was incorporated into everyday life, that even a Heavenly light had to become like daylight under Jan Van Cock's paintbrush. The virgin takes her place in the center, gently swaying, she seem to follow her own gaze. Her hair is red; throughout the ages red-haired women have had significance in the arts. They are viewed as unique and mystical, Just like Mary.She has a beautiful tracery behind her: wooden carving, the stories of her life . It is especially important in the Northern Renaissance, because they used the Juxtaposition of the presented sacred character and then an object or artwork of the exact same personage on the picture, referring to Biblical times. We see a sculpture of Christ behind her, while the baby Jesus is in her arms. She is presented in the everyday life of those people living in the 15th century and part of their modern culture. The church is richly decorated, in the Gothic style.Jan Van Check pays attention to detail in his painting of architectural interiors, done with unrelenting accuracy. The church is an important symbol of Marry chastity. It's an Ideal church, Jan Van Cock's fantasy of a perfect interior to enthrone Mary. This is a way to represent the heavenly sphere in an environment that the people of the time period can recognize. Concluding from the small size of the painting, it was not a painting designed for a huge Gothic church where most paintings were much bigger in proporti on. It was probably made for a wealthy man at the time.In the Renaissance it was common for wealthy people to collect artworks, it had a social significance. Above this, religious paintings and prayer books were manifestations of commitment to prayer. The Flemish didn't limit their demonstration of piety to the public realm, the individuals commissioned artworks for private use in their homes as well. â⬠Ideology of the time also influenced the painting. The Madonna is holding the child that is supposed to be Christ. Her face is turned away from the child, achieving a less engaged look. The scene is all about her.In Van Cock's painting, the child is a realistic baby; emphasizing the humanity of Christ. The interpretation of this can be the fact that Mary was a human, and in the Renaissance, humanism had a very big impact. After the neglected human dimension of the Middle Ages, the Renaissance brings humanity in focus again with the development of art, technology, and inventions . â⬠Van Check gives Mary three roles: Mother of Christ, the personification of the Christian Church and Queen of Heaven, the latter apparent from her Jewel-studded crown.The painting is majestic and luminous, it lights up like a dream. But at the same time the message is both worldly and devout, the artist set out to satisfy both demands, but in a form of realism that contained within itself a playful, even ironic attitude towards the relations existing between individuals, society and religion. Sources: Graham, Jenny. Inventing van Check: the remaking of an artist for the modern age. Oxford: Berg, 2007. Print. Harrison, Craig. Jan van Check: the play of realism. London: Reaction Books ;, 1991. 188. Print.
Friday, September 27, 2019
Analysis of Business Continuity Assignment Example | Topics and Well Written Essays - 1500 words
Analysis of Business Continuity - Assignment Example Similarly, the ââ¬Å"whatâ⬠question is with regards to which aspects of the firm or business entity/organization will be impacted upon and directed in the result of an emergency response. Further, the ââ¬Å"howâ⬠question delves into the actual mechanics of emergency response and the means by which these will be carried out. Additionally, the ââ¬Å"whereâ⬠question refers to the actual physical location in which emergency response and business continuity operations will be affected. By engaging each of these respective considerations, firms are universally able to engage in emergency response preparation and planning as a function of effecting business continuity in the face of a disaster or emergency of some size. Although the preceding list is not an exhaustive discussion of the way in which a business or organization should affect the responsibility, it helps to give a brief overview of some of the key considerations that must be made prior to any business conti nuity operations being delineated. Similarly, the second phase of business continuity is necessarily crisis management. It is at this particular stage that many firms and organizations have evidenced a distinct weakness. Whereas it is relatively obvious that emergency response should be considered and engaged within the firm, the actual implementation of crisis management is oftentimes ignored up until the moment in which it is required. As a function of their understanding crisis management and delineating key compliments, the following section will be concentric upon analyzing the importance of timely, organized, structured, and planned crisis management. With respect to timing, the current era has witnessed a drastic change in the way the information is disseminated; oftentimes new stories can travel the globe engage with stakeholders within a matter ofà moments.
Opportunity Essay Example | Topics and Well Written Essays - 1000 words
Opportunity - Essay Example Success does not depend on how hard a person works but how appropriate a person works. Opportunities therefore present us with chance to work appropriately in order to meet our objectives and responsibilities. This essay will therefore discuss the availability of opportunities in America with emphasis on American students. As a country, America started with the American dream that was initiated by the great pioneers and founders of the nation. Through the American dream, the country has been able to achieve its current success and global position. Working towards a sustainable nation was part of the American dream that has helped the country attains its global position as the most prosperous nation and the country with the strongest economy. How much the country has lived the dream is questionable due to the current economic difficulties experienced in the country (Colombo, Cullen, & Lisle, 1992). These economic difficulties not only affect the country but also the entire world since America is a symbol of global economy. Americans and specifically the American students have the chance to prove to the world that America is capable of living the American dream. Currently there are numerous opportunities for the people and specifically the students to make this reality. Presently the country is recoveri ng from a financial crisis and it is a concern to the government and the world. The recession presents an excellent opportunity to American students to defend the American dream. Knowledge is strength; students have acquired a lot of knowledge from their school and education. Although most of this knowledge is theoretical, students have the ability to utilize this knowledge to solve the current financial problem. Finding a solution to the recurring financial crisis is important to the countryââ¬â¢s economy as well as the global economy and hence an
Thursday, September 26, 2019
What Have I Learned during the Entrepreneurship Programme and How Can Essay
What Have I Learned during the Entrepreneurship Programme and How Can I Apply this in My Future Career - Essay Example The path-breaking study is basically based on broad field research, some work experience and academic study (Chesbrough, 2003). There are many well known companies who have adopted this approach and got facilitated from it. This open innovation is creating a great opportunity for all the entrepreneurs so that they can learn through their experience and apply all those profit-making strategies in their own business so that they can expand their business and acquire maximum profit. This also led to the enhancement of entrepreneurship since it shows how one man can contribute to the industry and how one individual can show creativity on their own. Open Innovation basically show how organizations can utilize the business model in order to identify a more distinguished role of research and development in the world containing abundant information, make advancement in their existing business, enhanced management and access of intellectual property, and develop their business for future (Mor en, 2010). Companies belongs to different industries must transform in a way similar to the one in which they have commercialize knowledge, and with this open innovation, entrepreneurs can unfasten the hidden economic value with respect to ideas as well as technologies. Who an entrepreneur is? An entrepreneur is actually a person who expands or creates new ideas while taking the risk of establishing a new enterprise in order to produce products and services which satisfy the need of the customers. (Pett, 2006). Every entrepreneur is a business person however; every business persons are not at all entrepreneurs. Let take a look at why every business person cannot be or are not an entrepreneur. Take an example from our daily life, an old woman who sits near your home and sells the same kind of food with same taste and quantity, even the quality remains the same. Her so-called stall remains unchanged which does not at all bring any change in her living standard not even for some apprec iable extent.Ã
Wednesday, September 25, 2019
Discuss The Effects That Multinational companies can have on a host Essay
Discuss The Effects That Multinational companies can have on a host acountry - Essay Example The many economic benefits to host countries have prompted many countries around the world, including developed and developing countries to focusing on attracting multinational companies or foreign direct investments as they are also called. Even countries that were otherwise hostile to these types of investments have been seeing them in a positive light. The targeting of these multinational companies has become an important development strategy as countries such as Ireland provide grants towards start up costs and research and development (Jensen 2006:38 ). One effect that multinational companies have on a host country is the economic and financial benefits that are gained by the host country. Especially in developing countries this is a welcome change for both the worker and the political directorate. High employment levels are a panacea for political and social stability. In many cases multinational companies pay higher wages than local companies. The high demand for workers also contributes to the higher wages. The workers also receive training in technology, management, and entrepreneurial expertise that can be transferred to other facilities and areas in the country. Some employees also receive training in the parent company overseas. Consequently, the host now will now have a more highly skilled workforce that will be better able to compete with other countries. The host country will also receive economic gain through revenues paid to the government. Generally the companies are subjected to the different tax guidelines of the countries. In many cases the bargaining power of the host country helps these countries in securing major financial benefits. These tax incentives will increase economic growth and progress and will also help in stabilizing local currencies. The host country will also benefit from improved and new infrastructure. These developments help not only as an immediate benefit but in the long run as well.
Tuesday, September 24, 2019
International Business Machines Essay Example | Topics and Well Written Essays - 750 words
International Business Machines - Essay Example From this paper it is clear thatà the Global Service business line provides the clients with business solutions and insights as well as Information Technology infrastructure. Even though most of the solutions are from the IBM systems and software, the corporation can engage in outsourcing if needed by the clients. According to CSI Market (2015), approximately 60 % of IBM's external Global Services annual revenue comes from maintenance and outsourcing arrangements. The Global Technology Services provide business process services and information technology services to the clients. It uses the IP integrated services and unique technology to ensure that the business value of its customers is improved. The business line enables the clients to benefit from the IBM's leading edge services, flexibility, outcomes, improved productivity and high-quality services.à As the report stressesà Global Business Services business line aims to deliver business outcomes to its clients in a more pra cticable manner. The business line attains its goal through the Application Management Services and Consulting. The business line ensures that the IBM solutions and content are integrated, and the clients are taken through a growth process. It ensures that the IBM capabilities and experts help the clients transform in market trends response. The activities are done through the segments of Front Office Digitization and Globally Integrated Enterprise.
Monday, September 23, 2019
The buying back of shares by companies is a dangerous financial Essay
The buying back of shares by companies is a dangerous financial strategy as it increases the company's gearing ratio - Essay Example Besides increasing the gearing ratio of the company it impacts important ratios. The impact of leveraged buyback of shares on Vodafone Plc has been explained with the help of qualitative and numerical analysis. The EPS graph of the company has been shown for a five year period to highlight the rise in the earnings per share due to a stock repurchase program. The deterioration in the important financial ratios like interest coverage, return etc has also been shown with the help of suitable graphs. Introduction An announcement of a share repurchase by a company is valued highly by the market participants interpreting it as a ââ¬Ëbuy signalââ¬â¢ for its stock. So the company has good reasons to buy-back its stocks but sometimes these share buyback programs go awry. Despite the popularity of such programs as evident from the recent buyback deals there are concerns whether the firm or the shareholders derive any gains from it. One reason favouring the buyback deal is that at any poi nt of time the surplus cash lying with the management can be used for buyback of shares thereby returning the funds to the shareholders. It has been seen that idle cash makes the managers complacent so buying back of shares can be one way of instilling confidence among the investors. From the view-point of the company stock buyback results in increased Earnings per share (EPS), share price and increases the value of ââ¬Å"executive stock optionsâ⬠(Ogilvie, 2006, p.51). However, the share buyback strategy can be dangerous if the company finances the buyback of equities using borrowed funds. Financing buyback using loan stock may look tempting in the short term but some years down the line the company has to pay back the loan. In the event of an economic recession the company will have to struggle with fund shortage. A rise in the share price, increase in company EPS are all good signs but not at the cost of endangering the position of the company in the future. The board of di rectors must keep the interests of the shareholders in mind while considering share buyback programs. Evidence behind share repurchases A significant research has been conducted especially in the area of share repurchases. The evidences from this research indicate that there is a strong market response on the announcement of share repurchase program. In the studies conducted by Asquith & Mullins (1983) and Damn et al (1981) it has been shown that the market responds positively to stock repurchase announcements, be it in the form of an ââ¬Å"open market repurchaseâ⬠or ââ¬Å"a self tender offerâ⬠. There have been abnormal returns in the case of share repurchase offers. A study on long term market returns, by C.J. Loomis analysed the repurchase offers during the period 1974 to 1983. His studies revealed that the shareholders of the companies that undertook stock repurchase programs earned a compounded yearly return of 22.6% with the S&P 500 reporting a return of 14.1% duri ng the same period. Though the above evidences support a positive response to the share repurchase offers some papers some papers have highlighted the negativity associated with such programs. As per the papers against share repurchase, the stock repurchase decisions by the company manifest signs of poor financial and operating performance, in fact it signals that the
Sunday, September 22, 2019
Capacity Planning Essay Example for Free
Capacity Planning Essay Computer capacity planning and its impact on the performance of the individuals is an important research topic in the current day scenario . Living in a competitive world makes it compulsory for everyone ( Individuals , firms etc . ) to deliver their best in the shortest period of time by optimally utilizing their resources . The above mentioned scenario is in direct proportion to an increase in the performance of the individual or the firm . This paper presents a report on how computer capacity planning can have a ositive impact on the performance of an institution like TUI , which uses technology as its medium of imparting knowledge to students coming from a variety of background, Nationality, ethnic race etc. It studies how capacity planning can enhance the existing functional efficiency of the institution and the performance of the educating staff as well as the students . TUI is an organization which acts as a platform for teachers lecturers and students from a wide range of colleges institutions and nationality. It concerns itself with an infinite number of issues related with the colleges and institutions, their management , their programmes , plans , achievements , their student quality etc . The list is non-exhaustive. For an institution like this, which caters to such a wide variety of educational demands and issues , the need for computer capacity evaluation is a necessity , especially when the medium used is e-learning . Computer capacity planning will help TUI spread its reach to all the student population of the world and all others who can benefit from the services provided by the institution . It will help them to effectively implement their plans while saving on cost at the same time . Computer Capacity planning is an important aspect of computer networking; proper Planning ensures a healthy network that can grow to meet future needs of the institution. Computer capacity planning will include capacity management and capacity control . Capacity management will ensure an increase in the total system output and responsiveness , whereas , capacity control will ensure non-wastage of the additional energy gained with capacity management . It will avoid delays in any of the universityââ¬â¢s future planning , use of new applications , new methods of teaching etc . It will also help the university officials to forecast the future situations which the institutions would be likely to face . Capacity evaluation is basically an act of evaluating the available resources of the concerned institution and the most optimal way of utilizing it . Capacity planning needs to be a part of the infrastructure of the institution and act as a medium of benefit for the professors and the students . The system provides with an intelligent interface to communicate. Capacity planning will add volumes to the existing efficiency of the technical planning running the institute . It will act as a facilitator , analyst , decision-maker and an important performer of the institution . Looking at it from the administrative point of view it helps them to organize their work better and also catalogue it in a more organized format . The quicker the computer applications works the faster the work can be done in terms of the number of persons reached per minute . The computer capacity evaluation becomes more relevant in the words of TUI University President Professor Yoram Neumann, Ph. D. ââ¬Å"TUI is one of the countrys (worlds) leading Internet Universities. â⬠Thus making it necessary for the institution to provide its members with high quality computer services . Computer capacity evaluation will help TUI achieve its main goal of providing e-learning opportunity to all their students on a wide scale , at all levels of study . It will act like a performance enhancer for the administration in reference to the services provided by them thus enabling them to deliver their best to the students in a shorter period of time . It will help them to avoid wastage of the existing resources which otherwise could be reached-out to a million students , help them in meeting their plans within time instead of constantly changing their way of doing their work . A methodical approach can be used by the administration to do their work . Over a period of time the process would prove to be significantly productive and also constantly improving the ways of doing things . Planning will also provide security to the whole setup thus acting as an initiative for an enhanced performance . This will also help the administrators to work more creatively , use new methods of teaching students and evaluating their performance . As a result with an increase in the performance of the administrator the performance of the students will also improve positively . From the students point of view since education will be imparted in an e-learning format the quality demanded by them will be very high . Maintaining a high bandwidth will enable the students to save their time , which can be more fruitfully utilized . High bandwidth will also enable the university to register a larger number of student Enrollment both nationally and internationally . Capacity evaluation will permit the students to increase their performance on any given activity drastically . Thus any activity running solely on any kind of technology must have that technology operating at its best . Computer capacity planning if used in TUI will act as a major contributor to the enhanced performances of both the university officials and the students as well and an increased performance will lead to a more contributive output which over a period of time can result in positive international impact considering TUIââ¬â¢s international reach .
Saturday, September 21, 2019
Motorcycle Helmet Laws in America Essay Example for Free
Motorcycle Helmet Laws in America Essay Motorcycle are not the safest means of transportation but millions of people all across America choose them over automobile for the trill, speed and high performance capabilities they offer in fraction of the price of a automobile. Motorcycle do not provide the protection like automobiles do with their outer body and safety features like air bags and seat belts, therefore in case of an accident the injury sustained by the rider is often very serious. When dealing with motorcycle accidents, majority of the fatalities are due to head injuries which could have been prevented had the rider been wearing a helmet. Helmets are the only method to reduce the head injuries during crashes which is the leading cause of death involving motorcycle accidents. Helmet use law has created a lot of controversies over the years, while some supporting the law and other opposing it. One side who support the law believe that the helmet law protects the motorcyclist from danger in case of an accident and save the nation a good deal of money. While, the other side believes that the law is unconstitutional and it violets their right to freedom. Although helmet cannot prevent motorcycle accidents but greatly reduces the number of deaths caused by head injuries during these crashes as well as helps in lowering taxes, insurance cost and health care cost. According to the federal government estimates, the number of deaths on motorcycle per mile in 2006 was 35 times higher than in automobile. In last couple of years motorcycle deaths have seen considerable increase- more than doubling in 2007 from the record low in 1997. In contrast the passenger occupant death reached a record low in 2007. This paper examines the history of motorcycle helmet use law and also the current state of the law. It also tries to highlight the burden that accident involving riders not wearing helmet impose on the society and also the effect of helmet law on helmet use. BACKGROUND HISTORY OF MOTORCYCLE HELMET LAW: The motorcycle helmets laws in United States has gone through several changes throughout the years. In 1967, in order to increase the helmet use, the federal government required the state government to enact helmet use laws to qualify for certain federal safety program and highway construction fund. The federal incentives was a success and by early 1970s almost all the states had universal helmet laws which covered all the riders of all ages and experience. 1968, Michigan became the first state to repel its laws. This lead to a series of repeal, re-enactment, and amendment of motorcycle helmet laws. In 1976, US Department of transportation (DOT) moved in to assess the financial penalties on states without helmet laws but the congress corresponded to state pressure and stopped DOT from assessing financial penalties on states without helmet laws. By 1980, several states had repealed their helmet laws and some weakened their laws to cover riders under the age of 18 but not older riders. In the 1980s and early 1990, several states reinstated helmet laws applying for all riders. In the 1991 Intermodal Surface Transportation Efficiency Act, several incentives were created by the congress for the states to enact helmet use and safety belt use laws. The eligibility criteria for receiving special safety grants was that the state must enact both the laws. Up to 3 percent of federal highway allotment was redirected to highway safety program for all the states that did not enact the laws by October 1993. But again after four years of establishing the incentive program ,congress revised itself. In the fall of 1995, federal sanction against the states without helmet use laws was lifted which paved the way for state to repeal helmet use laws. This lead to many states weakening its helmet use laws. Now 20 states and District of Columbia have helmet laws covering all riders and 27 states have partial helmet use law covering some riders (usually riders under the age of 18). Illinois and Iowa do not have any helmet use laws. PRESENT HELMET LAW STATUS: [pic] NO HELMET LAW: |NO HELMET LAW (2 STATES) | |ILLINOIS |IOWA | PARTIALLY FREE: |AGE REQUIREMENT ââ¬â PARTIALLY FREE (27 STATES) | |15 UNDER |18 UNDER |19 UNDER |21 UNDER | | | | | | |MAINE |ALASKA |DELAWARE |ARKANSAS | | |ARIZONA | |KENTUCKY | | |COLORADO | |RHODE ISLAND | | |CONNECTICUT | |SO. CAROLINA | | |HAWAII | |TEXAS | | |IDAHO | |PENNSYLVANIA | | |INDIANA | | | | |KANSAS | | | | |MINNESOTA | | | | |NEW HAMPSHIRE | | | | |NEW MAXICO | | | | |NORTH DAKOTA | | | | |OHIO | | | | |OKLAHOMA | | | | |SOUTH DAKOTA | | | | |UTAH | | | AGE REQUIREMENT INSURANCE: |AGE REGUIREMENT + INSURANCE (1 STATE PARTIALLY FREE) | |21 OVER | |FLORIDA | MANDATORY LAW: | | |MANDATORY HELMET LAWS (20 STATES) | |ALABAMA |MASSACHUSETTS |TENNESSE |NEBRASKA | |CALIFORNIA |MICHIGAN |VERMONT |NEW YORK | |GEORGIA |MISSISSIPPI |VIRGINIA |NEW JERSEY | |LOUISIANA. |MISSOURI |WASHINGTON |NORTH CAROLINA | |MARYLAND |NEBRASKA |W. VIRGINIA |OREGON | | | | | | | | | | | HOW DO HELMET LAWS AFFECT HELMET USE: Based on various studies of states enactment, repel and weakening of helmet laws, it was observed that the helmet use reached 100 percent when all the riders were required to wear helmet at all times compared to 50 percent when there was no law or law applied to only some riders. In 2008, according to NHTSA, 97 percent of the riders were observed wearing helmets in states with universal helmet laws compared to 90 percent in 2002. In states without universal helmet law the use of helmet was 52 percent in 2002 and 54 percent in 2008. Based on helmets judged to be compliant with federal safety regulations, use was 73 percent in 2002 and went up to 78 percent in 2008 among motorcyclists in states with universal helmet laws. It rose from 46 to 50 percent among motorcyclists in states without such laws. HOW DO HELMET LAW EFFECT MOTORCYCLIST DEATH AND INJURIES: In states which either reinstates or enacted saw a considerable increase in motorcycle helmet use and motorcycle death and injuries decreased drastically. Whereas the states which repealed or weakened their existing helmet law saw a great increase in motorcycle death and injuries and considerable decrease in helmet use. According to two studies published in 2007 and 2008, motorcyclist fatality rates were modelled based on helmet law type, after controlling for various factors such as per capita income, population density, and annual precipitation. It was observed that the states which had helmet law covering all riders had lowest death rates. Further on, the states which had helmet law covering only some riders had low death rate compared to states with no helmet law, but not as low as the states with universal helmet law. These results held for all three types of rates considered: deaths per 10,000 registered motorcycles, deaths per 100,000 population, and deaths per 10 billion vehicle miles traveled. Some examples of helmet law and its effect on death and injuries: à California enacted universal helmet law on January 1, 1992. The number of motorcycle fatalities decreased 37 percent to 327 in 1992 from 523 in 1991. à Nebraska reinstated a helmet law on January 1, 1989 after repealing an earlier law in 1977. The state saw 22 percent reduction in serious head injuries due to motorcycle crashes. à From 1968 to 1977, Texas had a universal helmet use law estimated to have saved 650 lives, but the law was amended in 1977 to apply only to riders younger than 18. The weakened law coincided with a 35 percent increase in motorcyclist fatalities. Texas reinstated its helmet law for all motorcyclists in September 1989. The month before the law took effect, the helmet use rate was 41 percent. The rate jumped to 90 percent during the first month of the law and had risen to 98 percent by June 1990. Serious injury crashes per registered motorcycle decreased 11 percent. But in September 1997, Texas again weakened its helmet law, requiring helmets only for riders younger than 21. Helmet use in Texas dropped to 66 percent by May 1998, and operator fatalities increased 31 percent in the first full year following the repeal. à Kentucky repealed its universal helmet law in 1998, followed by Louisiana in 1999. These actions resulted in lower helmet use, and quickly increased motorcyclist deaths in these states by 50 percent and 100 percent, respectively. In 2000, Floridas universal helmet law was weakened to exempt riders 21 and older who have at least $10,000 of medical insurance coverage. An Institute study found that the motorcyclist death rate in Florida increased by about 25 percent after the state weakened its helmet law. A study of the Florida law change by NHTSA found a similar effect; motorcyclist deaths per 10,000 motorcycle registrations increased 21 percent during the two years after the law was changed compared with the two years before. IMPACT OF HELMET LAW ON MOTORCYCLE THEFT: Helmet law has also resulted in decline in reduction in motorcycle theft as potential robbers may not have an access to helmet and not wearing helmet will attract police notice. According to Texas department of public safety, motorcycle theft decreased 44 percent between 1988 and 1998 in 19 cities after enactment of universal helmet law. After enactment of helmet law by Great Britain, motorcycle theft feel 24 percent in London. The Netherlands saw 36 percent drop in motorcycle theft after it enacted helmet laws in 1975. In 1980, when on the spot fine was introduced in former West Germany, motorcycle theft plummeted 60 percent. IMPACT OF HELMET ON HEALTH CARE COST: Unhelmeted riders have higher health care costs as a result of their crash injuries, and many lack health insurance. In November 2002, NHTSA reported that 25 studies of the costs of injuries from motorcycle crashes consistently found that helmet use reduced the fatality rate, probability and severity of head injuries, cost of medical treatment, length of hospital stay, necessity for special medical treatments, and probability of long-term disability. A number of studies examined the question of who pays for medical costs. Only slightly more than half of motorcycle crash victims have private health insurance coverage. For patients without private insurance, a majority of medical costs are paid by the government. According to specific findings of several studies: 1996 NHTSA study found that inpatient hospital charges were 8 percent higher for riders without helmets compared to riders wearing helmets. à Various studies shows that the health care cost associated with head injured motorcyclist decline after the introduction of helmet use law in 1994 by the state of California. The rate of motorcyclist hospitalized for head injuries decreased by 48 percent in 1993 compared with 1991 and the total cost of patients with head injuries decreased by $20. 5 million during this period. â⬠¢ After reinstatement of helmet law by Nebraska, study showed that there has been 38 percent decline in total acute medical charges for injured motorcyclist. A NHTSA evaluation of the weakening of Floridas universal helmet law in 2000 to exclude riders 21 and older who have at least $10,000 of medical insurance coverage found a huge increase in hospital admissions of cyclists with injuries to the head, brain, and skull. Such injuries went up 82 percent during the 30 months immediately following the law change. The average inflation-adjusted cost of treating these injuries went up from about $34,500 before the helmet law was weakened to nearly $40,000 after. Less than one-quarter of the injured motorcyclists would have been covered by the $10,000 medical insurance requirement for riders who chose not to use helmets. Various studies conducted in Nebraska, California, Washington and Massachusetts indicates that taxpayers are burdened by injured motorcyclist. From January 1988 to January 1990, 41 percent motorcyclist injured in Nebraska lacked health insurance or received Medicaid or Medicare. In Seattle, public fund paid 63 percent of trauma care for injured motorcyclist in 1985. In Sacramento, 82 percent of the costs to treat orthopaedic injuries sustained by motorcyclists during 1980-83 was paid by public fund. Forty-six percent of motorcyclists treated at Massachusetts General Hospital during 1982-83 were uninsured. MOTORCYCLE HELMET LAW ISSUES: Motorcyclist often feel that helmet use law violets their right of freedom. They believe that the rider should have the freedom to decide the use of helmet. According to various motorcycle groups, helmet use law reduces riding which in turn results in less death rates in motorcycle crashes which the government uses to confuse people about the safety benefits of helmet. Many motorcyclist have gone to the court objecting the law. In 1972, a federal court told a motorcyclist who objected to the law: ââ¬Å"The public has an interest in minimizing the resources directly involved. From the moment of injury, society picks the person up off the highway; delivers him to a municipal hospital and municipal doctors; provides him with unemployment compensation if, after recovery, he cannot replace his lost job; and, if the injury causes permanent disability, may assume responsibility for his and his familys subsistence. We do not understand a state of mind that permits plaintiff to think that only he himself is concerned. â⬠This decision was affirmed by the US Supreme Court. RECCOMENDATIONS TO INCREASE HELMET USE: Law makers should look into other means to increase use of motorcycle helmets other then law. Public campaign to encourage helmet use would greatly reduce the law enforcement cost also restriction to oneââ¬â¢s own freedom felt by some riders. But the chances of achieving results through these method is minimal. Subsidies on helmet purchase can shift part of the cost from riders to general public by providing federal money to the motorcyclist purchasing helmets. Subsidies would not motivate riders who value their freedom and convenience over the benefits helmet use. Motorcyclist using helmet should be charged lower insurance premium compared to riders not using helmet to encourage helmet use. This difference in insurance premium would encourage un-helmeted rider to use helmet and other safety gear in order to reduce their premium. When novice riders take rider education course, more emphasis should be laid on the importance of helmet use and not just only the basic operating skills. If they understand the use of safety gear and helmet at early age, it might affect their choice later in their life. Motorcyclist who fail to wear a helmet and sustain head injuries could be denied compensation for injury and damages. however, it would become difficult for the court to determine on case to case basis in which compensation would be denied as head injuries are sustained when helmet are worn. Various studies have showed that when helmet use is not mandatory, 50% of all riders wear helmet but when it is mandatory nearly 100% riders use helmet. So, the only way to increase helmet is to enact universal helmet law in all the states of United States of America. REFERENCES: www. pubmedcentral. nih. gov www. iihs. org www. nhtsa. dot. org.
Friday, September 20, 2019
The development of Women in India
The development of Women in India Dr. Raj Kumar acquired his Law degree from Delhi University and PhD from Kurukshetra University. He served Haryana Education Service from 1970 to 1973. He published a 7 volume series on Women and Indian Freedom Struggle and 15 volume series on Women, Society and Culture. He has contributed a number of articles in historical journals and commemoration volumes. He, justifiably, edited the present work of various scholars which provides a panoramic survey of women studies, based on latest research. He scrutinizes the status of women in India during Vedic times-a period of golden era for women and Brahmanic times. He mentioned the factors affecting the female psyche along with womens self-concept developed by Mohan (1988), which revolves around the confidence that woman is a weaker gender and her weakness can be converted into strength for her development by considering the womans basic needs and solicitudes about success and power in this regard. Women are involved in role conflict part icularly in the field of work and after marriage. Regarding rural development in India, out of 79% female work in agriculture, 46% are agricultural laborers, 33% are cultivators, and 5% are industrial workers. In Himaachal Pradash- a rural state, women know every task regarding the field of agriculture and livestock, despite of domestic work. According to 1981 census, 91.3%, out of total working women are agriculture workers against 63.3% of males in the state. Rural development is concerned with multi-sectorial programs like agriculture dependent upon industrial activities, transportation, commercialization, infrastructure, health and education services. According to world economic profile, women are 50% of the population, out of which official labor force is 30% and those women utilize 60% working hours and receive 10% world income. In Asia, there are a high proportion of women in agriculture. Regarding some determinants of women development, it was mentioned that on the second ha lf of 20th century, first, UN Declaration on Women rights, adopted on 7th Nov, 1967, mentioned appropriate measures for women rights in Article 1-11. Second, World Conference on International Womens Year in Mexico City on June 1975 issued a world plan of action and focused on human role of women. Some other factors like education, female health status and female economic participation as a determinant of social development as in India female literacy rate is 24.8% against the male literacy rate which is 46.89%. ICDS (Integrated Child Development Services) provides additional nutrition, health check-up, medication of minor illness, immunization, nutrition and health education to women and supportive services like water supply and sanitation. Asia- Pacific region is also multiform in terms of womens role in the economy because development and womenlabour participation are based on the overall female economic activity rates. As well as the participation in modern sector naturally incre ases with economic development. In India, 90% of women belong to agriculture life so future development of Indian womanhood must be examined in terms of village women. There is need for new cadre of women ICS and their inclusion in local panchayts. The topic women and development has been discussed at several gatherings within UN at conferences of non-aligned countries, governmental and non-governmental meetings. At ministerial conference of non-aligned countries in Lima in August 1975, the ministries of these countries programmed on Mutual Assistance and Solidarity repeated that full development of developing nations require maximum participation of women and men in all spheres of national activity. NIEO (New International Economic Order)s cornerstone is the participation of women along with men in the development of country is indispensable for successful development. UN decade for women has facilitated the identification and overcoming the impediments to integrate women in societ y, resulted in the wastage of human resources needed for development. The areas for specific action aimed at the advancement of women are employment, education, health, food, water, agriculture, industry, trade and commercial services, science and technology, communications, housing settlement, community development and transport, energy and environment. There are most commonly used sources of energy utilized by women but the sources like coal, oil, gas, hydropower and bio-gas are commonly used in industries so the users can not be easily distinguished by gender. Participation of women in energy conservation requires education, training and consumer information in the field of energy. Self-reliance as a development strategy, treat women as an integral part of overall development. Technical (TCDC) and economic (ECDC) cooperation in developing countries should aim at reaching the largest number of social groups like women and youth in rural and urban populations equally. By critically analyzing, in the past, women were treated as mere slaves. Though, India is changing politically, economically and socially, at a swift pace. The condition of women is also changing, as they have begun to take their due place in free India by educating themselves, inducing the right of voting and heartedly participating in country development. In 2010 March 9, one day after International Womens day, Rajyasabha passed Womens Reservation Bill, ensuring 33% reservation to women in Parliament and state legislative bodies. In modern India, women have adorned high offices including that of the President, Prime minister, Speaker of the Lok Sabha and Leader of Opposition, etc. The current President of India is a woman. In the last five years, the Government of India made amendments in law and formed a ministry of social and womens welfare in 1985, while, Article 14 of the constitution emphasis on the discrimination of gender. In Himachal Pradash, there are a number of welfare organizations besides Manila Mandals is working for the elevation of women in state while other departments are also working for the women development like health, social welfare and family welfare. Regarding ICDS influence, there is decline in malnutrition from 19.1% in 1976 to 7.8% in 1983 and mortality from 15% to 3%. All India Spinners Associations cottage industry gave new life to millions of female workers. Collective self-reliance encourages the transformation of womens position in the world, so that it can become an integral part of each countrys long term development strategy. There is a high rate of womens participation and other stakeholders (e.g. Ministry of Gender, Youth and Community Services) during program formulation. The last few decades have seen a mushroom growth of organizations struggling for women to get their dues, but, how far has this helped in the improvement of the status of women in the home, in society, in office or in the country as a whole, is still a debatable is sue. Gender training is still very weak, while, regarding the cultural values; women tend to be shy during group meetings. Women have no access to modern machines and other technology. In any program formulation, there is a lack of gender considerations, untrained staff in gender analysis skills, gender-blind budget, and weak business skills among women. All Indian Kisan Movement and All Indian Ryots Association are improving human conditions but few female join them. Muslim womens legal position is better than Indian ones in terms of right to inheritance, divorce, marriage and religious education. For the establishment of NIEO, policy of economic independence and collective self-reliance is necessary because lack of progress in NIEO establishment requires that greater attention is paid to the collective efforts and cooperation of non aligned and developing countries. There is no strict implementation of certainty about the right abuses of women. The National Crime Records Bureau re ported in 1998 that the growth rate of crimes against women would be higher than the population growth rate by 2010. Earlier, many cases were not registered with the police due to the social stigma attached to rape and molestation cases. Distracted from other areas such as womens low socio-economic status, labor market inequalities and legal bias, literacy programs are a relatively inexpensive and politically expedient palliative in their present form. While, 80% rural and urban females in India receive little medical care, so there is a need to strengthen professional and health education to face challenge of promoting female health. In conclusion, in a developed nation, female education is imperative for their self-sufficiency. For the rural development, a national perspective plan for the rural women and fighting discrimination will improve the social and economic status of women. In accordance with the social policy in public and private sectors, society is not supposed to explo it the dual role of women but acknowledge it as a contributor to socio-economic perspective. South Asian countries showing a lower level of female participation in non agriculture sector as compared to other countries at the same level of per capita GDP. This pattern of increase does not imply gender equity in the work place or in earnings. The availability of disaggregated information on the training and employment of women in energy related fields just like in US would enable planners and decision makers to formulate better strategies for energy supply and development. According to most of the governments, prejudicial attitudes towards women are fundamental obstacles towards the integration of women in national and international life. The role of educational planning, raising the level of skills and directing aspirations of both men and women is necessary for a developing nation.
Thursday, September 19, 2019
Biomechanics of Tyrannosaurus Rex :: Exploratory Essays Research Papers
Biomechanics of Tyrannosaurus Rex Do you remember sitting in the movie theatre as an 8 year old child watching Jurassic Park? The continuous action left your bones chilled and your frail youthful body stuck to the seat. But you couldnââ¬â¢t get enough of this movie because you knew that it was a privilege for you to see a rated R flick. But just when you thought that you could take no more, enormous Tyrannosaurus Rex flooded the screen running after a jeep going at least 50 miles per hour. The problem wasnââ¬â¢t that T-Rex looked fearsome but it was that he outran the jeep. In your mind you wondered how such an extremely large animal could move like the wind but you decided not to question it. As a kid you knew that a T-Rex couldnââ¬â¢t move that swift but just recently the scientific world began to catch on. Scientists have come to some very valuable conclusions through the study of biomechanics. Biomechanics is the application of the principles of mechanics to living systems, particularly those living systems that have coordinated actions. Unlike claims, dinosaurs can be analyzed through biomechanics because they move systematically. But the question still remains could Tyrannosaurus Rex run as fast as they say? Many people have attempted to answer this question, only few have come to a valid conclusion. The most famous study on the biomechanics of T-Rex was by Hutchison and Garcia. They discussed whether or not the short-armed T-Rex could run very fast considering its massive size. Through this hypothesis a model was created. The model designed by Hutchinson and Garcia used physics and biological equations to calculate the amount of leg muscle an animal needs to remain balanced during fast running. While running at great speeds an animal pushes against the ground in order to support itself. This also means that the animal exerts force proportional to its weight every time its foot hits the ground. As a result, the ground pushes back upwards on the leg with a vertical force. That vertical force, called a ground reaction force, is about 2.5 times body weight during fast running. Hutchinson and Garcia's model calculates the ground reaction force along with other necessary factors such as the length of limbs and stance to determine the amount of muscle mass that would be needed to maintain equilibrium. Biomechanics of Tyrannosaurus Rex :: Exploratory Essays Research Papers Biomechanics of Tyrannosaurus Rex Do you remember sitting in the movie theatre as an 8 year old child watching Jurassic Park? The continuous action left your bones chilled and your frail youthful body stuck to the seat. But you couldnââ¬â¢t get enough of this movie because you knew that it was a privilege for you to see a rated R flick. But just when you thought that you could take no more, enormous Tyrannosaurus Rex flooded the screen running after a jeep going at least 50 miles per hour. The problem wasnââ¬â¢t that T-Rex looked fearsome but it was that he outran the jeep. In your mind you wondered how such an extremely large animal could move like the wind but you decided not to question it. As a kid you knew that a T-Rex couldnââ¬â¢t move that swift but just recently the scientific world began to catch on. Scientists have come to some very valuable conclusions through the study of biomechanics. Biomechanics is the application of the principles of mechanics to living systems, particularly those living systems that have coordinated actions. Unlike claims, dinosaurs can be analyzed through biomechanics because they move systematically. But the question still remains could Tyrannosaurus Rex run as fast as they say? Many people have attempted to answer this question, only few have come to a valid conclusion. The most famous study on the biomechanics of T-Rex was by Hutchison and Garcia. They discussed whether or not the short-armed T-Rex could run very fast considering its massive size. Through this hypothesis a model was created. The model designed by Hutchinson and Garcia used physics and biological equations to calculate the amount of leg muscle an animal needs to remain balanced during fast running. While running at great speeds an animal pushes against the ground in order to support itself. This also means that the animal exerts force proportional to its weight every time its foot hits the ground. As a result, the ground pushes back upwards on the leg with a vertical force. That vertical force, called a ground reaction force, is about 2.5 times body weight during fast running. Hutchinson and Garcia's model calculates the ground reaction force along with other necessary factors such as the length of limbs and stance to determine the amount of muscle mass that would be needed to maintain equilibrium.
Wednesday, September 18, 2019
Good Times :: Media Television Shows Papers
Good Times Originally aired on CBS in 1974 as a spinoff of the sitcom Maude, Good Times was a Black situation comedy based on the everyday lives of a Black Chicago family during the height of the civil rights movement (Deane, 2004). The cast starred Esther Rolles as the mother Florida Evans who first appeared as the maid in the television show Maude, John Amos as the father James Evans who starred in the hit miniseries Roots, comedian Jimmie Walker who played the oldest son James Evans Jr. (JJ), Ja'net DuBois as neighbor and friend of the Evans family Willona Woods, Ralph Carter who played the youngest son Michael Evans, and Anderson Bern Nadette Stanis as daughter Thelma Evans (Deane, 2004). Good Times took place in the assimilated hybrid minstrelsy genre of Black sitcoms which means that it often had offensive stereotypical aspects present such as mammy and sambo characters, but these characteristics took place in a traditional white sitcom setting and often had references to the Black civil rights movement that was taking place at the time. Originally created to show African Americans in a different more positive light, it gained popularity with Black and White audiences quickly and rated number seventeen for the 1973-1974 seasons (Ingram, 2004). As the show proceeded however, it began to drift away from its original purpose as the character JJ's popularity began to grow. Often criticized for his similarities to buffoonish minstrel characters in early television history, JJ was seen as doing a disservice to the show causing Esther Rolles and John Amos to leave. Attempting to continue the show and regain ratings, the show's producers centered episodes around the hijinks of JJ, but alas the show's ratings continued to fall and the show was cancelled. This brings us to the question at hand. Was Good Times a show that portrayed Blacks in a positive manner to the American public, or was it more of the nail in the coffin to the positive identity of Black America? Positive Aspects Good Times was an interesting 1970's television comedy series that explored the life of a poor black family. This family was simply trying to get by and have a good life in the projects of Chicago. The Evans family was a family that faced real problems on the show and encountered many different situations which they had to overcome. When the show was debuted on February 1, 1974, the series starred John Amos and Esther Rolle as James and Maude (the parents) (Ingram).
Tuesday, September 17, 2019
Malachi Stacks in the Matchmaker Essay
In the world of business there are always those men and women who are not recognized for the contributions they make to certain products, projects, or works even though without them the result would never exist. Nonetheless, these people go on with their daily lives working hard, knowing that all their dedication is going to benefit others and not them. Yet, they canââ¬â¢t blame the big companies for not being recognized, because these men and women do this willingly. They are fully aware that their actions serve a purpose to the greater rather than a personal one, and for them that is enough. Such people do not need the recognition of others because they themselves know the importance of their actions. One example of such a human being is portrayed in Thornton Wilderââ¬â¢s The Matchmaker. His name is Malachi Stacks, and though he only shows up on stage two or three times, he is the one who gives the entire production meaning. Malachi is the person who sets into motion a series of events that completely change not only the characters, but also their lives. With this character, Thornton Wilder takes what used to be just a regular farce comedy and gives it meaning which makes all the difference, Malachi Stacks makes all the difference. Thornton carefully crafted the role of Stacks in such a way that made him distinct from the rest of the characters. Even with being in his fifties, sadness and depression are entirely absent from his life. Every line spoken by him has a joyful feeling to, and almost puts a smile on the readerââ¬â¢s face. Even at times when he is being put down by Mr. Vandergelder, joy is felt in his words. Wilder makes Malachi seem like a little adolescent, who has not yet been exposed to reality, and still thinks the world is perfect. However, all this is just an image that Malachi establishes for his own purposes. He makes people believe he can be trusted by pretending to be respectful and following orders. Malachi creates a relationship between himself and the others, especially Mr. Vandergelder, which makes him seem gullible and easy to control when in fact it is he who controls them. This sort of maneuver is portrayed very well in his first scene with Mr. Vandergelder, in which he says ââ¬Å"Youââ¬â¢ll never regret it, Mr. Vandergelder. Youââ¬â¢ll never regret it.â⬠It is such a simple line, and yet there is so much there. Malachi makes it seem like he is just another man who is happy about getting a job, when in reality he is masking his true intentions behind these innocent words. The real reason Malachi is happy to have gotten the job, is because he now has the ability to fix the inequality which exists between Vandergelder and the others. Truth be told, Malachi is actually the only individual who see this flaw amongst the characters, and he knows it should not be there. Therefore, by formulating this sort of innocent personality, Malachi Stacks gives himself the perfect opportunity to finally bring equality into the lives of the characters. It all happens in Act III when Mr. Vandelgelder is having his coat taken off as his purse filled with money falls to the ground. Malachi, knowing that the primary reason for such inequality amongst the characters is their financial situations, takes his chance to balance the scale. However, he does not make a big deal out of it. Malachi simply takes the purse, asks Vandelgelder if itââ¬â¢s his, and since the response is no he gives it to Cornelius. Itââ¬â¢s very quick, subtle, and seems like the right thing to do. Yet, even though what he did was so simple, it was enough to bring equality into their lives and he knew that. By asking Vandergelder whether or not the purse was his, Malachi tested him to check if he deserves the money. For in his short little monologue that he has right after picking up the purse, Mr. Stacks says ââ¬Å"The law is there to protect property, but- sure the law doesnââ¬â¢t care whether a property owner deserves his property or not, and the law has to be correctedâ⬠. Therefore when he asked Vandelgelder ââ¬Å"Did you drop somethingâ⬠the real question was ââ¬Å"Are you worthy of all this money that you haveâ⬠. Vandelgelder responding quickly said no, and that was enough for Malachi to know that the money deserved to be in the hands of someone else, Cornelius. It is also at this point that inequality begins to slowly disappear between the characters. First, Cornelius and Barnaby are able to pay for their expensive dinner and truly impress Mrs. Malloy along with Minnie. Then Mrs. Levi finally tells Mr. Vandergelder what she thinks of him when he cannot pay the bill, and that is when he finally realizes what kind of man he is. Slowly through scenes like these, the balance between the characters begins to even out and by the end, everyone is happy, joyful, and most of all the inequality amongst them completely vanishes all thanks to Malachi Stacks. Though Thornton chose Malachi to be the tool for equilibrium amongst the characters by having him ââ¬Å"redistribute the superfluitiesâ⬠, the part also is important when it comes to the moral of the story. Of course, after reading The Matchmaker it safe to say that there are multiple lessons to be learned from this play, but one of the main ones shows up in Malachiââ¬â¢s monologue. Right after discussing the entire matter of redistributing property, Thornton has the character talk about how one man should not have more than one vice. In fact, he ends his line with the words ââ¬Å"One vice at a timeâ⬠. Now this entire concept might seem abstract, because after all even in todayââ¬â¢s world vices are looked down upon. However, Thornton shows what two vices can do to a man by having Malachi use Vandergelderââ¬â¢s wrongs against him. His first true frailty is that in his own world Mr. Vandergelder sees himself a king, where no one can stop him because he has so much money. The second is his passion for money. In fact, his first vice comes from this one, because to him a person who has more money has more authority. So instead of merely having Vandergelder destroy himself through his vices, Thornton uses Malachi to show how having more than one vice is recipe for destruction. First, he uses Vandergelderââ¬â¢s attitude towards himself to gain his trust, by pretending to be loyal to him. Next, once Vandergelder thinks he has him under his control, Malachi uses the second frailty against him taking that which is most precious, his money, and giving it away. By using both of these flaws in his masterââ¬â¢s character, Mr. Stacks brings Vandergelder into a state of despair where he has lost everything that made him, a King in his own mind. One man. Three Scenes. Yet without him, The Matchmaker would never be the same. Thornton Wilder made a smart decision in imgaging such a character, because he is developed in such a way that his importance to the whole play is not realized until the conclusion. For with just a simple action of handing off a purse to Cornelius, Malachi made a ripple effect which changed the course of the entire production and made all the difference. Malachi Stacks made all the difference.
Monday, September 16, 2019
Factors Affecting the School Readiness of Public Kindergarten Pupils in Lanao Del Sur I â⬠B Essay
Kindergarten marks the beginning of formal education. The childââ¬â¢s initial school experience can influence the way he feels and acts to future school activities. I will also affect the way he relates to other people and his environment for the rest of his life. Success or failure at this stage can affect his well-being, self-esteem, motivation and perspectives. Lack of kindergarten readiness may also lead to his being held back in the next grade level. School readiness is defined as the ââ¬Å"ability to cope, learn, and achieve without undue stressâ⬠. In the Philippines public and private schooling begins with kindergarten, when a child is about 5 years old. Kindergarten is 3 to 4 hours a day or depending on the specific requirement of a particular school. While most of the activities in kindergarten are play activities like singing, storytelling, and drawing, children are also learning basic skills through these activities that will be needed throughout their lives. These skills include listening to direction, using and managing time well, being patient, sharing, and working in cooperation with others. Kindergarten helps children adjust to school slowly, going only a few hours each day. It bridges the gap between the age when kids spent their days playing at home or in a daycare or nursery school and the more formal learning that will begin once a child moves on to the next level. Many parents still believe that kindergarten is just an introduction to school. They merrily think that children just enjoy playtime, art, story time, and maybe even learn their colors, alphabet, and numerals while they are at it. However, at present the expectation s for kindergarteners have leveled up and are much stricter than before. Today, there is actually a set of curricum that must be followed and expected to keep up. Parts of the curriculum include reading readiness, writing, math, science, social studies and other subject related. Children are also taught about proper manners, classroom rules, hygiene and sanitation. Parents should take a personalized approach and focus as their childrenââ¬â¢s potentials and skills and see if they are already prepared for kindergarten school. Parents must take the initiative to actively participate in home base learning before they heed on out to school. It is important to keep an eye on the children and decipher their behavior, to come to conclusion if they are ready to attend kindergarten or not. Some children tend to develop skills a lilltle later depending on what they have been exposed to and how fast they can grasp these things depending on their surroundings. Specialists in the field of child development feel strongly that readiness is not something that a child is trained for but is the understanding of the childââ¬â¢s unique development and grow pattern and what types of activities will enhance the natural development of a child in the areas of motor development, visual processing skills, auditory processing skills, language skills, numerical skills, conceptual skills, and social-emotional behaviors. TheNatioanl Association For The Education Of Young Children (NAEYC) stated that school readiness is defined as the state of early development that enables individual child to engage in and benefit from early learning experience, As a result of family nurturing and interactions with others, a young child at this stage has reached certain level of social and emotional development, cognition and general knowledge, language development, physical well-being, and motor development. (AnneArundel and Harford) Parents are the first and most important teachers in their childââ¬â¢s life. Staying involved and providing children with a supportive, nurturing environment will help strengthen the learning process. Parents must allow their chilred to make choices and simple decision making so that children will achieve a reliable sense of right and wrong. Language helps to shape the brain, and teaching children to speak according to Jerome Brunner helps them not only organized words in a sentence but also helps organize their minds. Children need many types of language experiences which include being read with and also participation in family conversation. Storytelling, nursery rhyme and reading enrich the language experience. Parents must spend time with oral language activities for a strong foundation in reading and spelling (Graue. 1992). There are several factors affecting the school readiness of public kindergarten pupils namely: maturation, relevance of materials and methods of instruction, emotional attitude, personal adjustment, social status and tribe. Other contributors to the readiness gap are environmental stress, family income, parentsââ¬â¢ literacy, nutrition premature birth, health, early childcare, experiences, low birth weight and genetic endowment. Maturation affects the readiness of the kindergarteners because the child has not reach yet a sufficient stage of mental and physical development needed to perform school tasks characteristics of that particular grade level which entails a higher level of performance than that of which he has at the moment. Experiences determine the kindergarten readiness for learning. Exposure to environment and varied activities will help the child learn. Children learn from seeing, hearing, touching and these experiences will help the child get to know his environment better. To interpret reality, children must experience their surroundings through imagination and discovery. Rooted in the experience of early childhood are the values that individuals will carve for themselves in later years, their capacity to live according these values, and their attitudes towards themselves and the human community. (Bredekamp,1987) Research shows that relevance of materials and methods of interest affects childrenââ¬â¢s readiness; children are more ready to learn if the material meet their needs and fits their interest. They are more ready to learn if they are having fun doing the tasks. (Karweit,1988) Emotional attitude and personal adjustment plays a great influence in childrenââ¬â¢s readiness. Emotional stress blocks them from learning especially those resulting from unmet needs, rejection from home, over protection, experience of failures, home difficulties, poverty, peace conflict, and other related issues. ( Shepard and Smith, 1986). Greg Duncan and Katherine Magnuson documented that children who live in poverty with poor socio-economic status are more likely not ready for kindergarten school since their parents will most likely spend for basic needs than materials for learning like books and other learning kits . Parents in families with low socio-economic status are less likely to talk with. Read with. And teach young children since they would rather spend their time looking for sources of income. Environmental stress affects school readiness according to Kimberly Noble, N. Tottenham, and B. J. Casey. They explained that chronic stress or abuse in childhood can impair development of the hippocampus the region of the brain involved in learning and memory, and reduces a childââ¬â¢s cognitive ability. Thus the impact of stress on brain development during childhood may explain a large portion of the gap in school readiness. Health is another factor that affects school readiness according to Janet Currie, childââ¬â¢s health combined with maternal health and behavior may account for success or failure of kindergarten pupils. Childrenââ¬â¢s who are not in the best health condition may not be always present in the classroom those will be missing development of skills and knowledge. Nancy Reichman reported that premature birth and low birth weight can seriously impair cognitive development. A renting which include nurturance, discipline, and home base teaching are greatly link to the development of childrenââ¬â¢s cognitive, social, and emotional skills. Feelings of self-worth develop as a child feels good about his environment and the way he interacts in that environment. The most important gift a parent could give his child is quality time. Children need unhurried periods to explore and experiment, to understand and affirm through idea of freedom. They must also be provided with the security, acceptance, love, thoughtful and appropriate restrictions. (htpp://www. mayoclinic. com/health/kindergarten-readiness) Everyone agrees that a childââ¬â¢s future academic success is dependent on being ready to learn and participate in a successful kindergarten experience. Yet, defining (readiness) can be a very difficult task. Due to childrenââ¬â¢s different prekindergarten education experiences and development, they enter kindergarten with varying skills, knowledge, and level of preparedness. Parents and teachers have different expectations for what children should know and be able to do before starting kindergarten. Furthermore, discussions of readiness do not always include how schools and community can enhance and support childrenââ¬â¢s and kindergarten readiness. It is within this premise that the researcher would want to conduct a study and find out the factors affecting the school readiness of public kindergarten pupils in Lanao Del Sur 1 B. Theoretical Framework This study is anchor on various theoretical perspectives. Several theories of child development of child development and learning have influenced discussions of school readiness. These have had profound impact on kindergarten readiness practice. These three theories include the maturationist, environmentalist, and constructive perspective of development (Powell, 1991). Maturationist Theory The maturationist theory was advanced by the work of Arnild Gessell. Maturationists believe that development is a biological process that occurs automatically in predictable, sequential stages over time (Hunt, 1969). This perspective leads many educators and families to assume that young children will knowledge naturally and automatically as they grow up physically and ecome older, provided that they are healthy (Demarest, Reisner, Anderson, Humphrey, Farquhar, and Stein, 1993). School readiness, according to maturationist is a state at which all healthy young children arrive when they can perform tasks such as reciting the alphabet and counting; these tasks are for learning more complex tasks such as reading and arithmetic. Because development and school readiness occur naturally and automatically, maturationist believe the best practice are for parents to teach young children to recite the alphabet and count while being patient and waiting children to become ready for kindergarten. If a child is developmentally unready for school, maturationist might suggest referrals to transitional kindergartens, retention, or holding educators, and parents when a young child developmentally lags behind his or her peers. The young childââ¬â¢s underperform at the level of his or her peers. Environmentalist Theory Theorist as John Watson, B. F. Skinner, and Albert Bandura contributes greatly to the environmentalist perspective of development. Environmentalist believe the childââ¬â¢s environment shapes learning and behavior; in fact, human behavior, development, and learning are though of as reactions of the environment. This perspective leads many families, schools, and educators to assume that young children and acquire new knowledge by reacting their surroundings. Kindergarten readiness, according to the environmentalist, is the age or stage when young children can respond appropriately to the environment of the school and the classroom (e.g. , rules and regulations, curriculum activities, positive behavior in group settings and directions and instructions from teachers and other adults in school). The ability to respond appropriately to this environment is necessary for young children to participate in teacher initiated learning activities. Success is dependent on the child following instructions from the teachers or the adult in the classroom. Many environmentalist-influenced educators and parents believe that young children lean best by rote activities. Such as reciting the alphabet over and over, copying letters, and tracing numbers. This viewpoint is evident in kindergarten classrooms where young children are expected to sit at desk arranged in rows and listens attentively to their teachers. At home, parents may provide their young children with workbooks containing such activities as coloring or tracing letters and numbers-activities that require little interaction between parents and child. When young children are unable to respond appropriately to the classroom and school environment, they often are labeled as having some form of leaning disabilities and are tracked in classroom with curriculum designed to control their behavior and responses. Constructivist Theory The constructivist perspective of readiness and development was advanced by theorist such as Jean Piaget, Maria Montessori, and Lev Vygotsky. Although their work varies, each articulates a similar context of learning and development. They are consistent in their belief that learning and development occur when young children interact with the environment and people around them (Hunt, 1969). Constructivist view young children as active participant in the learning process. In addition, constructivists believe young children initiate most of the activities required for learning and development. Because active interaction with the environment and people are necessary for learning and development, constructivist believe that children are ready for school when they can initiate many of the interactions they have with the environment and people around them. Conceptual Theory This study takes into account the independent variables and dependent variables. The socio demographic factors which include age, sex, health, parentsââ¬â¢ literacy, socio-economic status, experience, child abuse and child stress. The independent variables are presumed to affect or influence the dependent variables which are the school readiness of kindergarten pupils which include gross motor skills, fine motor skills, visual discrimination skills, auditory discrimination skills, language skills, math-numeracy skills, and social-emotional behaviors. Base on the outcome of this studies, the writer aims to find the factors affecting the school readiness of the kindergarten pupils to insure that this children will have an opportunity to enhance their skills, knowledge, and abilities. Furthermore it aims to encourage the parent to have hands-on training of their children. The researchers seeks to encourage the teachers to recognize pupils individual differences, re-enforce and extend their strengths, assist them in overcome their difficulties and develop in them sensitivity to community values. Finally, the writer would want to learn what the public kindergarten pupils in Lanao Del Sur 1 B know and able to do as they enter kindergarten level. The writer wishes to find an in-depth study for the strengths and needs of individual learners, motivation for learning instruction, and interventions. The researcher believes the childââ¬â¢s inputs, reflections, and self evaluation are essential to the process of leaning and development. ? Schematic Presentation of the Conceptual Framework of the Study Independent Variables Dependent VariablesResult Statement of the problem This study seeks to investigate the factors affecting the school readiness of public kindergarten pupils. It is the objective of the researcher to determine whether or not age, sex, health, parentââ¬â¢s literacy, socio-economic status, experience, child stress, child abuse, and socio-emotional behavior can affect or influence the school readiness. This study also aims to answer the following propositions: 1. ) What are the factors affecting the public school kindergarten pupils in terms of: 1. 1Gross motor skill 1. 2Fine motor skill 1. 3Visual discrimination skills 1. 4Auditory discrimination skills 1. 5Language skill 1. 6Math-numeracy awareness 1. 7Social-emotional behavior 2. ) What are parents, community stake holders, teachers, and schools intervention program to enhance pupil readiness for kindergarten? 3. ) Is there a significant relationship between this interventions and pupilââ¬â¢s school readiness? Scope and limitation of the study This study is conducted in the public Central School in Lanao Del Sur 1 B in the school year 2011-2012. The study is focused on the factor affecting the school readiness of puplic kindergarten pupils in Lanao Del Sur 1 B. The pupils, teacher, and parents are randomly selected. Data are gathered through the questioner which is composed of pupils, teachers, and parents questioners. This study is delimited to the public kindergarten pupils in the Central School in Lanao Del Sur 1 B. Significance of the study. This study aims to identify the factors affecting the school readiness of public kindergarten pupils to give life on the perceptions of the parents, teachers, and school administrators. Furthermore, it wishes to determine if parenting and nurturance, maturation, health condition, experience, teachers expectation, and school curriculum has some important role in the school readiness of the kindergarten pupil. This study would investigate the underlying reasons/factors which affect the school readiness of the kindergarteners. Finally this study aims to be a significant contribution to provide opportunity to enhance the skill, knowledge, and abilities of the pupil. This study will provide an assessment of young children not only in measuring it but in their ability to work through activities, to solve problems, to work independently, and to reflect on their thinking. To The pupils- this study could assist the young learners to respond appropriately to the environment of the home, classroom and community (rules and regulations, curriculum activities, positive behavior in group setting, directions and instruction from the teacher other adults in the school). To The parents- this study will help the parents to provide appropriate time and management to engage their children in learning task such as reading and writing the alphabet, basic counting skills, identification of colors, size and shape. This will also encourage the parents to be patient and loving, waiting for their children to become developmentally ready for kindergarten. The parents are urge to provide their young children with workbooks containing such activities in coloring, tracing letters and numbers. To The teachers- this research study will help the teacher to understand and support the child natural curiosity and the diverse way in which the child learns. The teacher is also encourage to give the child some individualized attention and customize the classroom curriculum to help the child address his difficulties. To The school administrators- being conscious of the factors affecting the school readiness of the kindergarten pupils the schoolà administrators could provide small classes with higher teacher-pupil ratio, teacher with bachelor degree and training in early childhood education, parents-teacher training component that will re-enforce what teacher are doing in school to enhance childrenââ¬â¢s cognitive, social and emotional development. To The Curriculum Makers- this study will give a new perspective that will lead to the formulation of a curriculum that is cognitively stimulating and child center base. To The Community of Lanao Del Sur 1 B- this study will act as a catalyst for positive change. Local government and community agencies will have to work together to enhance programs for the learning development of kindergarten pupils. Definition of terms The terms use in this study is conceptually and operationally define for better understanding and clarity. Maturation ââ¬â conceptually defined as the appropriate stage of mental and physical development, when a child is ready to perform school tasks characteristics of that particular grade . Operationally it means the chronological age of a child which is legally acceptable to enter a grade level. Experience ââ¬â means the teaching exposure, learning materials, methods of learning, practices, facilities, and structures in home and in environment which help the child learns and develops in ways that are most natural and suitable for their ages and levels of maturity. Operationally defined as the results of work done by the child in whom the child retains memory, mastery, knowledge, and skills. School readiness ââ¬â conceptually means the ability to cope, learn, and achieve without undue stress. This is the proficiency level of the child in specific area of a grade level. It is also the developmental stage whom the child is ready to learn new things. Operationally it means that the child is already of age to enroll in a grade level. This could also mean that the child has the ability to participate in classroom activities, work as instructed and cooperate with his classmates in group works. Fine motor development ââ¬â means the coordination of small muscles in the hands and fingers. These skills are essential to complete task such as writing, tracing, cutting, holding things, moving little pieces of object, putting together of parts of a whole. These skills are needed in taking precision in the hand-eye coordination. Gross motor skills- are the developmental awareness and coordination of large muscles activity. These skills are needed in walking, running, jumping, dancing, and playing. Visual discrimination skills- means the ability to visually differentiate the forms, and symbols in the environment . This is needed in the matching, and sorting of colors, sizes, shapes, and quantities. Visual memory skills ââ¬â means the ability to recall accurately prior visual experience. It is also the ability to remember what has been done. Heard, touched, smelled, and tasted and seen.. Auditory discrimination skills refer to the ability to receive and differentiate auditory stimuli. It is the capacity and ability to identify ,distinguish, imitate, differentiate the sounds heard. Auditory memory skills ââ¬â means the ability to retain and recall auditory information. It also means the ability to remember, recite, repeat, tell, and do what is heard. Receptive language skills ââ¬â refers to the ability to express oneself verbally, to say what the child thinks and feels and to engage in simple group conversations. Comprehension skills ââ¬â refers to the judgment and reason as the child understands his environment. It is the ability to make comparisons, understand differences and recognized cause and effect. Social ââ¬â emotional behavior ââ¬â refer to the ability to relate meaningfully to others and be accepted in both one-on-one and group emotions. This also means the ability to act among other children, to cooperate with the group, to show feelings, and to demonstrate responsibility. Math and number awareness ââ¬â refers to the ability to identify and recognize numerals, to count on, recognize patterns, and sorting and classifying of objects.
Sunday, September 15, 2019
Immobilization of Amylase on Magnetic Nanoparticles Essay
Abstract à ±-amylase was immobilized covalently on iron oxide magnetic nanoparticles. The synthesis of magnetic nanoparticles was done by the coprecipitation conventional method. The chemical composition and particle size of the synthesized particles was confirmed via X-ray diffraction. Tyrosine, Lucien and chitosan and glutaraldehyde were investigated to make a covalent binding between the iron oxide magnetic core and the immobilized enzyme. Immobilization using chitosan and glutaraldehyde show the best result. Finally the immobilization efficiency was tested by determination of protein concentration in a solution before and after mixing with the magnetic nanoparticles. Introduction In the last two decades, new terms with the prefix `nanoââ¬â¢ have rushed into the scientific vocabulary; nanoparticle, nanostructure, nanotechnology, nanomaterial, nanocluster, nanochemistry, nanocolloids, nanoreactor and so on. Nanoparticles, are defined as particulate dispersions with a size in the range of 10-100nm (Gubin et al, 2005). Magnetic nanoparticles have gained a remarkable interest in the last years both for basic research and applied studies. The use of magnetic nanostructures has been proven in biochemistry, biomedicine, and waste treatment among other fields. This broad range of applications is based on the fact that magnetic particles have very large magnetic moments, which allow them to be transported and driven by external magnetic fields. The magnetic nanostructures have also a great potential in biotechnological processes taking into account that they can be utilized as a carrier for enzymes during different biocatalytic transformations (Dussà ¡n et al, 2007 ). Different types of biomolecules such as proteins, enzymes, antibodies, and anticancer agents can be immobilized on these nanoparticles. Magnetic supports for immobilization purpose are either prepared by incorporating magnetic particles during the synthesis of the supporting polymer or magnetic particles itself be coated with common support materials such as dextran or agarose. Recently, a new method for the direct binding of proteins on magnetic nanoparticles via carbodiimide activation was proposed (Ren et al, 2011). Immobilization is one of the efficient methods to improve enzyme stability. There are various methods for immobilization of enzymes on many different types of supports. It can be a chemical method in which ionic or covalent bond formations occur between the enzyme and the carrier, or it can be a physical method, such as adsorption or entrapment of the enzyme in or on a solid support material. Magnetic nanoparticles as immobilization materials have advantage based on its property and size that make it desirable for using it in various applications (Mateo et al, 2007). Iron oxide nanoparticles, Fe3O4, are one of the widely used types of magnetic nanoparticles and have great potential for applications in biology and medicine due to their strong magnetic properties and low toxicity (Jalal et al, 2011) Review of literature I) Magnetic nanoparticles: The historical development of nanoparticles starting with Paul Ehrlich and then first attempts by Ursula Scheffel and colleagues and the extensive work by the group of Professor Peter Speiser at the ETH Zà ¼rich in the late 1960s and early 1970s (Jà ¶rg Kreuter 2007). They are solid particles with a size from 10 to 100nm which can be manipulated using magnetic field. Such particles commonly consist of magnetic elements such as iron, nickel and cobalt. They have been used in catalysis, biomedicine, magnetic resonance imaging, magnetic particle imaging, data storage , environmental remediation and optical filters (Gubin et al, 2005). Magnetic nanoparticles as immobilization materials have the following advantages: simple and inexpensive production, can be released in controlled manner, stable magnetic properties of complexed nanoparticles and easy isolation steps in short time. Among these materials, Fe3O4 magnetic nanoparticles are the most commonly studied. Fe3O4 magnetic nanoparticles have good biocompatibility, strong superparamagnetism, low toxicity, and an easy preparation process, and their use in biosensors has already shown attractive prospects (Sheng-Fu Wang and Yu-Mei Tan, 2007). II) Magnetic core material: There are many magnetic materials available with a wide range of magnetic properties. such as cobalt, chromium and iron oxide-based materials such as magnetite and maghemite. The suitable magnetic materials depend on applications the MNP will apply in (Dobson et al, 2007). Magnetite Fe3O4: Magnetite is a common mineral which exhibits ferro (ferri) magnetic properties. The structure of magnetite belongs to the spinel group, which has a formula of AB2O4. Its ferromagnetic structures arise from alternating lattices of Fe(II) and Fe(III). This gives it a very strong magnetization compared to naturally occurring antiferromagnetic compounds such as the ferrihydrite core of the ferritin protein (McBain et al, 2008). III) Synthesis of iron Magnetic nanoparticles: There were many synthesis methods for magnetic nanoparticles one of these is Co-precipitation. This method may be the most promising one because of its simplicity and productivity (zhao et al., 2008). It is widely used for biomedical applications because of ease of implementation and need for less hazardous materials and procedures. Co-precipitation is specifically the precipitation of an unbound ââ¬Å"antigen along with an antigen-antibody complexâ⬠in terms of medicine (Indira and Lakshmi, 2010).The reaction principle is simply as: Fe2+ + 2Fe3+ + 8OHââ¬â ââ¡â Fe (OH)2 + 2Fe(OH)3 ââ â Fe3O4 + 4H2O (Guo et al., 2009). Other method used for synthesis like: Thermolysis of metal-containing compounds, synthesis of magnetic nanoparticles at a gas-liquid interface, synthesis in reverse micelles and sol-gel method (Gubin et al, 2005). IV) Characterization of MNP: There is no unique method for determination of the nanoparticle composition and dimensions; as a rule, a set of methods including X-ray diffraction, Transmission electron microscope and Extended X-ray Absorption Fine Structure (EXAFS) Spectroscopy are used (Gubin et al, 2005). X-Ray diffraction analysis of nanomaterial seldom produces diffraction patterns with a set of narrow reflections adequate for identification of the composition of the particles they contain. Some X-ray diffraction patterns exhibit only two or three broadened peaks of the whole set of reflections typical of the given phase (Moroz 2011). In the case of larger particles (provided that high-quality X-ray diffraction patterns can be obtained), it is often possible not only to determine the phase composition but also to estimate, based on the reflection width, the size of coherent X-ray scattering areas, corresponding to the average crystallite (nanoparticle) size. This is usually done by the Scherer formula (Gubin et al, 2005). The nanoparticle dimensions are determined most often using Transmission electron microscope, which directly shows the presence of nanoparticles in the material under examination and their arrangement relative to one another. The phase composition of nanoparticles can be derived from electron diffraction patterns recorded for the same sample during the investigation. Note that in some cases, TEM investigations of dynamic processes are also possible. For example, the development of dislocations and disclinations in the nanocrystalline during the mechanochemical treatment has been observed (Woehrle et al, 2000). More comprehensive information is provided by high resolution transmission electron microscopy, which allows one to study the structure of both the core and the shell of a nanoparticle with atomic resolution, and in some cases, even to determine their stoichiometric composition (Woehrle et al, 2000). The structures of non-crystalline samples are often studied by EXAFS spectroscopy. An important advantage of these methods is its selectivity, because it provides the radial distribution (RDA) curve for the atoms of the local environment of the chosen chemical element in the sample. The interatomic distances (R) and coordination numbers (N) obtained by EXAFS are then compared with the known values for the particular phase (Gubin et al, 2005). Other methods are used more rarely to study the nanoparticle structures. Integrated research makes it possible to determine rather reliably the structures of simple nanoparticles; however, determination of the structures of nanoparticles composed of a core and a shell of different compositions are often faced with difficulties (Gubin et al, 2005). V) Stabilization of Magnetic Nanoparticles: Although there have been many significant developments in the synthesis of magnetic nanoparticles, maintaining the stability of these particles for a long time without agglomeration or precipitation is an important issue. Stability is a crucial requirement for almost any application of magnetic nanoparticles. Especially pure metals, such as Fe, Co, and Ni and their metal alloys, are very sensitive to air. Thus, the main difficulty for the use of pure metals or alloys arises from their instability towards oxidation in air, and the susceptibility towards oxidation becomes higher the smaller the particles are (Lu et al, 2007). Therefore, it is necessary to develop efficient strategies to improve the chemical stability of magnetic nanoparticles: Surface Passivation by Mild Oxidation: A very simple approach to protect the magnetic particles is to induce a controlled oxidation of a pure metal core, a technique long known for the passivation of air-sensitive supported catalysts. This oxidation can be achieved by various methods (Peng et al, 1999). For example, Peng et al. developed a method for oxidizing gas-phase nanoparticles by using a plasma-gas-condensation-type cluster deposition apparatus. Demonstrated that very good control over the chemical state of the cobalt nanoparticles was achieved by their exposure to an oxygen plasma. The control of the oxide layer has a tremendous impact on exchange-biased systems, where a well-defined thickness of the ferromagnetic core and the anti-ferromagnetic shell are desirable. Moreover, a direct correlation of the structure and magnetism in the small particles can be determined. developed a mild oxidation method, using synthetic air to smoothly oxidize the as-synthesized cobalt nanoparticles to form a stable outer layer which can stabilize the nanoparticles against further oxidation (Peng et al, 1999). Other methods: Matrix-Dispersed Magnetic Nanoparticles, Carbon Coating, Silica Coating , Precious-Metal Coating and Surfactant and Polymer Coating Typical strategies for immobilizing catalysis enzyme onto MNPs rely on surface grafting via low molecular weight linkers or polymers containing amino or epoxy functional groups to which enzyme are reacted via covalent conjugation methods (Ren et al, 2011). Due to their high specific surface area and easy separation from the reaction medium by the use of a magnetic field, they have been employed in enzymatic catalysis applications ex amylase EC 3.2.1 (Ren et al, 2011). The maximum reported loading capacity of amylase is approximately 81.97 mg/g (AktaÃ
Ÿ et al, 2011). One drawback of existing immobilization technologies is that the activity of enzyme decreases significantly upon immobilization due possibly to changes in enzyme secondary structure, or limited access of substrate to the active site of the surface bound enzyme (Lei et al, 2009). Thus, despite numerous reported approaches for immobilization of catalysis enzyme on magnetic nanoparticles, there is still the need for simple, cost-effective and high loading capacity methods. Aim of work Is to Synthesis of iron magnetic nanoparticle (MNP) then immobilize amylase on MNP and test the efficiency of immobilization method then study the activity of immobilized amylase.
Subscribe to:
Posts (Atom)