The most powerful people Assignment Example | Topics and Well Written Essays - 500 words

The most powerful people - Assignment Example Time Magazine in 2009 described Bernanke as a visionary who â€Å"conjured up trillions of new dollars and blasted them into the economy; engineered massive public rescues of failing private companies; ratcheted down interest rates to zero. He didnt just reshape U.S. monetary policy; he led an effort to save the world economy† (Edroso, 2009). Trichet is known as the â€Å"Euro fighter† who defended the low inflation on the euro (Stock Market Today, 2011). The Stock Market Today states that â€Å"Trichet’s every move affects the euro zone countries† (2011). On the other hand, Shirakawa has a vital role in influencing Japan’s future economic prospects. He is also known for devising an unconventional monetary policy which was later on adopted in modified forms by the US and UK (Chung, 2011). During the recession of 2008 to 2009, banks of the world lowered their interest rates. This move was done to make borrowing cheaper and encourage businesses and consumers to borrow to spur or increase economic activity. More goods will be produced by businesses and bought by consumers. If there is a demand to produce more, then it will also create jobs which will positively affect the economy and eventually rise out of the recession. One of the reforms adopted by the Fed to improve the U.S. monetary policy is the quantitative easing whereby the government injects billions of dollars of fresh cash in the economy to pump up economic growth (Sanati, 2011). However, this policy is not proven effective as pointed out by Sanati since the economy is still not performing well as shown by the negative economic indicators, including a very low job growth (2011). Bernanke though is still convinced that quantitative easing would help the economy to recover. One is of the opinion that Bernanke is right in instituting this policy because it will result in banks having access to cheap cash which they can lend out to

Nurses Notes Essay Example for Free

Nurses Notes Essay Writing stays with you throughout your entire life, though you may not believe so. Hidden in your thoughts about your future career is the idea that writing will be part of your profession. After doing extensive research, I now realize how much writing will be involved with my chosen profession, a registered nurse. Writing in nursing can range from short, concise works to long, detailed, complex works. Writing as a nurse contains nurse’s notes, documentation, written reports, health records, flowcharts, care-plans, narratives, and if desired, professional journals for publication. The position within in the field also plays a role with the amount of writing needed to be done. The head of a department takes part in a lot more writing than a nurse. A head of a department holds a variety of duties when it comes to writing such as: staff proposals, budget proposals, department operations, policies and procedures, and protocols. A nurse must be able to follow the basic writing standards: writing clear, concise, and grammatically correct sentences, use proper punctuation, and demonstrate critical thought. Nurses are also expected to learn how to present information succinctly with their work being accessible to anyone who may read it. Nurses aim to write work that can be used in both clinical aspects of discipline and research. The field of nursing requires a nurse to be able to write swiftly and accurately. Nurses must also always be prepared to define their recorded information and writing. Records must be clear, concise, complete and accurate. The clichà © that is universally known, the job is not complete until the paperwork is completed is more true in health care than in any other profession, referring to the fact that a lot of writing is done in this workforce. Types of Writing: Nursing as a profession contains many different types of writing. Nurse’s notes are records that nurses who directly care for the patient, continuously record information. This includes the patient’s symptoms, medications given, and scheduled procedures or activities. Documentation reflects the care the care the nurse has or has not provided to the patient. Documentation is the nurse’s only form of legal proof that they did or did not do something for the patient. Nurse’s look at documentation as important as the actual care they are providing for their patient. Hands-on care and documentation carries equal importance in the eyes of a registered nurse. Documentation then becomes art of the patient’s medical record after the patient is either discharged or no longer living. Written reports are needed when the care of a patient is given over to another nurse. I interviewed Sharon Doll, a registered nurse at Glendive Medical Center who states that these written reports are very rare. â€Å"It is highly unlikely that you as a registered nurse will have to give the care of your patient over to another nurse.† (Personal interview, November 23, 2012) Health records, or medical records, consist of the accumulation of nurse’s notes. The records are held on file at the hospital and are referred to when needed. Health records consist of prescriptions prescribed to the patient, x-ray results, test results, reports, blood type, allergies and other important information about the patient that the care providers may need to be aware of. Recently, health records have transferred to being electronic, taking away from the writing perspective. Assessment check-boxes go hand-in-hand with health records as well, which are the summary of the symptoms of the patient. Flowcharts simply show the process that has been taken while caring for patients. They show the sequence in which the patient has followed. This is a concise review of the patient’s history and the care that was provided. Care-plans outline the nursing care that is to be provided to the patient. It is a set of actions that the nurse will take to provide the necessary care for the patient in hopes of full recovery. A care-plan consists of three parts: definition of the problem, intervention and/or solutions, and the evaluation of success or intervention and/or solution. Many times, care-plans are set out by the doctor because the doctor is not as available as the nurse. Care-plans are usually completed day-by-day and sort of run on a schedule. Narratives are important in nursing communication and important in the aspect of capturing the patient’s history and also the treatment they received. Narratives use standard abbreviations, are not written in first person, instead they refer to themselves as â€Å"the nurse†, and finally, rely on the communication with others. Professional journals for publication are optional for nurses but are quite popular. Journals are a compiled of the nurse’s experience, clinical practices, and their theoretical approaches and/or opinions. Nurses write journals to inform their audience, primarily formed of nursing students. Nurse’s journals give other people a first-hand look at their point of view and their job. If a nurse rises to the head of a department, he/she will face more writing than that of a registered nurse. Staff proposals and budget proposals are simply directed within the department. A staff proposal consists of the duties of the staff and the expectations they are held to. Budget proposals consist of the budget throughout the department and how it will be distributed. Department operations are the operations the department can fulfill. These include the day-to-day functioning of the department. Policies and procedures review the policies by which the employees must follow and the procedures they take before handling care for a patient. Finally, protocols refer to the steps of the procedures and experiments that are conducted by the department. Reflection: Montana State University prepares students to be successful in their chosen field. MSU offers Writing 101 and also University Seminar that covers the writing aspect. I think the preparation of MSU for nursing students and writing is sufficient due to the fact that the majority of the junior year in the pre-nursing major simply consists of all nursing classes. These classes will also review all aspects of nursing, including the writing that a registered nurse will complete within the profession. Conclusion: Overall, I was unaware of all the writing that was needed in the profession of a registered nurse. I did not think that I would do more than simply taking nurse’s notes. With these findings, I am very grateful for the writing courses offered at Montana State University.

Recycling Essay -- Recycle Garbage Rubbish Papers

Recycling During the early 1970s, as communities across the United States saw their landfills filling up, attention turned to alternative methods of garbage disposal, such as incineration and recycling. While incineration proved to be a thorny issue due to its toxic ash byproduct, recycling was embraced by Americans as an effective way to offset rising garbage production rates. Today, demand for recycled products is beginning to match supply, and the percentage of waste going into landfills and incinerators is decreasing steadily. In 1970, when Americans produced 121 million tons of municipal solid waste (MSW), three-quarters went directly into landfills, one-fifth was incinerated, and less than one-sixteenth was recycled. Now, with nearly double the MSW (more than 210 million tons per year), recycling accounts for almost one-quarter and incineration for a little over one-sixth. Indeed, widespread application of recycling throughout American communities has proven to be one of the great environmental success stories of the last quarter century. Accordingly, the trend toward fewer landfills continues. In 1988, for example, 8,000 landfills were scattered across the US; today little more than 3,000 remain. Meanwhile, nearly fifty percent of all Americans now have access to curbside recycling programs, while others, mostly in rural areas, can drop recyclables off at one of the nation's 2,600 transfer stations for recovery and diversion. And an increasing number of commercial and industrial operations are finding that recycling as much of their waste as possible saves hundreds of thousands of dollars per year on waste hauling and l... ...ls. At this time, a plastic recycling only minimally reduces the amount of virgin resources used to make plastics. Recycling papers, glass and metal, materials that are easily recycled more than once, saves far more energy and resources than are saved with plastics recycling. Consider this example: polyvinyl chloride (PVC) bottles are hard to tell apart from PET bottles, but one stray PVC bottle in a melt of 10,000 PET bottles can ruin the entire batch. It's understandable why purchasers of recycled plastics want to make sure that the plastic is sorted properly. Equipment to sort plastics is being developed, but currently most recyclers are still sorting plastics by hand. That's expensive and time consuming. Plastics also are bulky and cumbersome to collect. In short, they take up a lot of space in recycling trucks.

Critical evaluation †John Steinbeck-Of Mice and Men and Robert Ludlum-The Bourne Identity Essay

Through the history of man; mathematicians, philosophers, teachers, and scientists have molded and shaped our world. These men and women, young and old, are responsible for the continually growing knowledge in today’s youth. Upon studying the most influential educators, it was proven that writers and authors sustain every element of the society we live; love, passion, romance, adventure, drama, science fiction, and non-fiction. All of these categories exist for only one purpose, to entertain the minds who absorb the material. Entertaining authors make an exceptional story and none other than Robert Ludlum and John Steinbeck accomplish this feat better. In order to further understand these authors thirst to provide edge-of-the-seat entertainment, their past and present must be explored. Although these authors lived in two diverse locations, their driving desire for knowledge appears the same. Ludlum and Steinbeck attended college after high school, majoring in English. After graduating from Salinas High School in 1919, Steinbeck attended Stanford University from 1920-1925. Two years after Steinbeck left to pursue his writing career in New York, Robert Ludlum was born on May 25, 1927. Ludlum was educated privately and at the Chesire Academy, Connecticut. After appearing is school theatricals, he acted in the comedy Junior Miss on Broadway at the age of sixteen. His degree includes: B.A., Wesleyan University, Middletown, 1951. Having never graduated from Stanford University, Steinbeck’s life for the most part was low profile even after the publishing of his first books, â€Å"Cup of Gold† (1929), â€Å"The Pastures of Heaven† and â€Å"To a God Unknown†, which were all inadequately acknowledged by the literary world. â€Å"Tortilla Flat† (1935) was the noticeable turning point in Steinbeck’s literary career receiving the California Commonwealth Club’s Gold Medal for best novel. Steinbeck continued writing, and The Grapes of Wrath (1939) won him the Pulitzer Prize. The Nobel Prize was awarded to John Steinbeck for Literature in 1962 â€Å"†¦for his realistic as well as imaginative writings, distinguished by a sympathetic humor and a keen social perception.† 1 Twenty-nine Academy Award nominations and four Academy Awards were given for revision of John Steinbeck’s stories. Literature lost one of its most accomplished and distinguished writers on December 20, 1968, in New York City; John Steinbeck died at the age of 66. However, on a more positive note, New York City was also the place where literature bore Robert Ludlum. Ludlum can be described as a modern day author. He is a well-known author writing twenty-one novels and selling over 290 million books in thirty-two different languages. Ludlum started his literary career relatively late because he was working in 1. Mobel Lectures; literature 1901-4967 the theatre as an actor and producer. One of the primary reasons Ludlum is such a suspenseful writer is due to the fact that he was born in an age where movies grabbed the attention of the public eye. In the 1950s, Ludlum worked as a stage and television actor. After producing 300 stage productions for New York and regional theatre, Ludlum wrote his first novel, â€Å"The Scarlatti Inheritance† (1971). Few writers are able to grasp global attention using unbelievable plots that spin into engrossing tales. John Steinbeck and Robert Ludlum are comparable writers. These two authors are very accomplished and their novels reputations speak for themselves. John Steinbeck’s Of Mice and Men and Robert Ludlum’s The Bourne Identity are the focus of this evaluation. Their works signify literary techniques that contribute to theme. The central theme in Of Mice and Men written by John Steinbeck: human fates are constantly controlled by outside forces. The techniques he uses for example: repetition and symbolism are extremely successful in getting across his very cynical views on this theme. Similar techniques are used in Robert Ludlum’s The Bourne Identity. Uniquely writing; many of Ludlum’s techniques are present in his writing, but the reader is too engrossed in the story to recognize them. However, Ludlum writes meticulously in his story plots. When evaluated, the reader can distinguish that repetition and symbolism are also used as literary techniques that contribut e to theme. Steinbeck and Ludlum use the technique of repetition to effectively build up the climax of the tragedy. In Of Mice and Men, Lennie unintentionally killed his mouse when petting it. This situation repeats itself further in the novel when Slim gives Lennie a puppy. When playing with the animal, Lennie gave the puppy a disciplining thump for biting him and he killed it. An incident, such as this, will be the downfall of George and Lennie. Near the end of the novel, Lennie strokes Curley’s wife’s hair. He holds too tightly and she gets frightened. â€Å"Lennie was in a panic.† 2 Climaxing, he attempts to quiet her, â€Å"Don’t you go yellin’, he said, and he shook her, and her body flopped like a fish. And then she was still, for Lennie had broken her neck.† 2 The repetition of unintentional death foreshadows a negative outcome for Lennie, his sealed fate. This action brought upon his own murder by George who shot him in the back of the head out of mercy for everything else that was weak and helpless. In this act of violence, George would not be considered a murderer, in fact, quite the opposite. George, instead, would be deemed a savor because he did Lennie a favor. 2. Steinbeck; 91 The Bourne Identity uses repetition in a similar fashion. The central character Jason Bourne faces memory loss, crippling him from discovering his true identity. His instincts and intelligence help guide him. The quote: â€Å"You are not helpless. You will find your way.† 3 is repeated on several occasions, which foreshadows success on Jason’s behalf. Jason’s rhetorical behavior when faced with stressful and difficult situations ends in same violent manner. â€Å"Bourne grabbed the Frenchman in front of him now, his left arm around the man’s throat, his right hand tearing at the man’s left ear.† 4 Without thinking, Jason reacts to the situation with poise and precision. Jason’s rhetorical skills evoke his memory enough to enable him to think and act on his own to avoid death or capture. â€Å"Whenever you observe a stress-and you have the time-do your damndest to project into it. Associate as freely as you can; let words and images fi ll your mind. In them you may find clues.† 5 This quote is nearly repeated again, â€Å"Whenever you’re in a stress situation-and there’s time, of course-do exactly as you would when you project yourself into one you’re observing. Let your mind fall free, let whatever thoughts and images that surface come cleanly. Try not to exercise any mental discipline. Be a sponge; concentrate on everything and nothing. Specifics may come to you, certain repressed conduits electricity prodded into functioning.† 6 except there is added tactics, which suggests that Jason is constantly learning. Through repetition Jason persistently advances his skills to obtain his past by varying his appearance, â€Å"Change your hair†¦you change your face.† 7 Soon after his skills advanced, Jason learned that his real name is David Webb who turns out as a young Far East scholar. Webb received a new identity from the Central intelligence (CIA) as Jason Bourne, a black ops agent. His primary objective was to kill Carlos, another far more advanced assassin, but was betrayed. As the plot twists, the CIA has given Jason quite a few hoops to jump through for his own survival. The climax builds to this particular moment in the novel, when Jason reverses the situation and uses the training the CIA gave him to kill the assassin Carlos. The climax appears to have truth because not only has Jason stopped being on the defensive side of this ‘live or die’ game, but also his proficient skills have drawn him to his past profession to kill or be killed; fate. The interfering CIA has lost control of Bourne; however he is drawn back to his past line of work, which could result in death, so he ultimately loses. It could be said that Jason Bou rne was born to be a professional assassin under anyone’s control. 3. Ludlum; 39, 43, 83 4. Ludlum; 64 5. Ludlum; 50 6. Ludlum; 82 7. Ludlum; 116, 161 Another technique that demonstrates John Steinbeck’s view of fate is the symbolism. Near the end of the novel, â€Å"A watersnake glided smoothly up the pool, twisting its periscope head from side to side, and it swam the length of the pool and came to the legs of a motionless heron that stood in the shallows. A silent head and beak lanced down and plucked it out by the head, and the beak swallowed the little snake while its tail waved frantically.† 8 The heron, stationary and patient, symbolizes fate, while the watersnake, vulnerable and unaware, its victim. The watersnake would most likely symbolize George. Not only does the Heron symbolize fate, it also symbolizes Lennie the burden to their dream. Steinbeck illustrates his view on fate once more by word choice. Words like ‘lanced’, ‘plucked’, and ‘waiting’ suggest that Steinbeck believes that fate strikes assertively and specifically. Similarly, Robert Ludlum uses symbolism to project the same idea. Symbolism appears not as evident as repetition; however, present nonetheless. The CIA seems to be the entity or government corporation that symbolizes fate. Every element in the novel can be drawn back to something that the CIA has caused. Ludlum and Steinbeck believe fate to be all the same. In Ludlum’s case, the CIA’s intricate plans and organized operations parallel Steinbeck’s idea that fate acts in the same manner, assertively and specifically. Of Mice and Men and The Bourne Identity are literally written in identical fashions. Steinbeck and Ludlum use character driven dialogue to tell the story. The point-of-views transpose between first person (the main characters) and third person (the narrator). The first person prospective uniquely projects to the reader each of the character thoughts and actions. The first person prospective gives a clear understanding of what exactly will happen, without all of the excess narration. However, the narration does an excellent job in describing the setting among other elements, such as flow between events. The ‘events’ or chapters are present in both novels. Ludlum uses three books within his novel along with thirty five chapters because The Bourne Identity is far longer than the six chapters Of Mice and Men. This technique is apparent for the sole purpose of changing locations in the story with ease; in The Bourne Identity Jason and his companion travel to different countries, and in Of Mice and Men the only change of location appears within the town and ranch. These two books were written very similarly. Both switched between first and third person depending on what the best way to tell the story was. By changing point of views, Ludlum and Steinbeck were able to develop their themes more thoroughly. The technique of changing perspectives allowed the reader to identify with the main characters, but at the same time, know vital information that would be needed to understand the story. 8. Steinbeck; 99 Robert Ludlum and John Steinbeck are exceptional authors. There novels: The Bourne Identity and Of Mice and Men, respectively, have Robert Latta’s praise. Woohoo, right? There are more positive, than negative, statements to be discussed. Particularly, Ludlum’s story is far more intriguing than Steinbeck’s. The plot and characters all are attention getters. The idea that a man with no memory has instincts that are above any normal man, and has answers to every question, except his name, is fascinating. The only downfall to Ludlum’s work appears to be the length of his novel, five hundred some odd pages, that turns out to be a lot of reading time. Steinbeck’s novel length; however, fits the taste well, only one hundred some pages. The ‘olden story’ in Steinbeck’s novel, gets negative feedback because its entire plot stimulated nothing more than closing eye lids. Praising the literary device of repetition, this gave some indication that what was being read over again would prove useful in assembling a critical evaluation essay. The repetition also forces the information into your brain, meaning it holds significance. Moreover, the theme portrayed among these two novels had some relevance with our current lives, which also served another purpose to reading them Overall, the novels ended up balancing one another. A positive recommendation can be made for both these novels because something can be learned. WORKS CITED Lectures, Mobel. â€Å"The Nobel Prize in Literature 1962.† [online] http://www.nobel.se/literature/laureates/1962/press.html Ludlum, Robert. The Bourne Identity. New York: Richard Marek, 1975 Steinbeck, John. Of Mice and Men. New York: Penguin Books, 1978

Animal Experiments

Some people think animal experimentation should be stopped because it is cruel. Others think it is necessary for the development of science. Discuss both view and give your own opinion. Animals were friend of humanity at different times of the human history. In modern times, experiments upon animals have long been a breeding ground for spirited debate. Some animal right activists argue that we should ban animal experiments altogether because putting animals through experimentation is unjustifiable on moral grounds. Yet some other people contend that the advancement of science necessitates animal testing. Personally, I believe both their views have merit and demerit. Granted, empirical evidence suggests that many animal experiments are performed callously without any attention to the discomfort or pain that laboratory mammals endure. First and foremost, improper confinement of test animals such as locking them up in cramped cages is inhumane. It can gravely disrupt natural biological functions of the test animal. Further, the effects of vaccination and vivisection conducted on live mammals can be chilling. They may, in some case, even constitute sheer torture of live animals. However, from a more pragmatic perspective, evidence bounds that animal subjects are still an indispensable part at this point. In the first place, it is manifest that drug experimentation on live mammals is far more effective than experimentation on bacteria or on other lower species in testing drug safety. In the second place, in space research, live animals are still the only practical alternative to humans in testing living creature reaction to outer-space experience on a flight not considered to be sufficiently safe for human astronauts. Lastly, lab research about the behavioral tendencies of chimpanzees, gorillas and other members of the primate group is also necessary. It produces outcomes which consistently advance anthropological and genetic studies. To conclude, I concede that experiments upon animals may induce suffering to the test animals. However, I am convinced that there are no feasible alternatives to this methodology at the current stage of scientific development. On balance, I think that we should allow animals testing to be continued but at the same time we use techniques such as anesthetic to minimize the pain of the test animal.

Creon

Creon is an ideal tragic hero in this story. He has every characteristic that is observed by Aristotle in The Poetics. Creon's hybris, or his pride, causes him to violate the laws of the gods, which is reason for several tragic things that happen. Creon is of high station by being the head of his class, the King. Being a new King, he will not let anyone prove him wrong nor change his mind. Although King, he does not have all perfect traits. He has traits that allow him to make mistakes but he also has the ones which can allow him to succeed. According to Aristotle's observations, the tragic hero is to be brought down because of fate or an error in judgement. This error is sentencing Antigone to death for disobeying his decree. The most important part of a tragic hero is his tragic flaw. Creon's tragic flaw is his pride and arrogance. One event that shows his pride is this: "...Are you(Haemon) here, maddened against your father, or are we friends, whatever I may do". Haemon says, "...I am yours..." Haemon still asks his father though if he will not execute Antigone. But, because of Creon's excessive pride, he is angered by the remark and makes the situation worse than it already is. So he says, "...You shall not revile me with these tauntings and go free. Bring out the hateful creature; she shall die full in his sight, close at her bridegroom's side". Finally, Teiresias comes and tells Creon that the gods are angered by Creon's decisions and that he should release Antigone and bury Polyneices. Creon disregards this due to his pride. Teiresias says, "...You'll feel the wound..." Creon pays no attention to this remark. Being a tragic hero, Creon must suffer. Creon has a realization. He realizes that Teiresias must have been right. Creon tries to remedy things, but it is too late for that. In the reversal, Haemon commits suicide after Antigone commits suicide. Eurydice then kills herself. Creon suffers g...

Anyone vs. Everyone

Anyone vs. Everyone Anyone vs. Everyone Anyone vs. Everyone By Maeve Maddox A promotional announcement for an end-of-year review on NPR set me thinking about the difference between anyone and everyone: The year 2014 has been no fun for just about everyone. The construction struck me as odd because the negative â€Å"no fun† led me to expect anyone, not everyone. Anyone means anybody or any person. It refers to an individual in a group; which one doesn’t matter. Anyone is the usual choice in negative statements and in questions: There wasn’t anyone in the lobby. I didn’t see anyone in the street. The year 2014 was no fun for anyone. Does anyone remember his name? Can anyone learn how to sing? In addition to its use with negatives and questions, anyone is used for emphasis: Anyone could do it, even a caveman. Everyone means everybody or every person. It refers to all the members in a group. Everyone worked late today. Everyone is welcome at the meetings. Her mother asked everyone to contribute to the food drive. The year 2014 was miserable for just about everyone. In some contexts, there is very little difference between anyone and everyone: Correct: Everyone benefits from a just government. Correct: Anyone benefits from a just government. Sometimes they are not interchangeable: Incorrect: The new CEO knows anyone in the business. Correct : The new CEO knows everyone in the business. Note: One could say, â€Å"The new CEO knows everyone who is anyone in the business.† The NPR sentence sounds unnecessarily convoluted to me, but then, it did catch my attention. Some idioms with anyone: anyone’s guess Something that can’t be known until it happens. â€Å"It’s anyone’s guess who will win the election.† anyone’s game An evenly balanced contest. â€Å"Tied in the seventh inning, it was still anyone’s game.† not give anyone the time of day Ignore someone, out of dislike or boorishness. â€Å"The new employee won’t give anyone the time of day.† Idioms with everyone: everyone who is anyone Anyone of any importance. â€Å"We talked with everyone who is anyone in the world of cycling, starting with urban mobility expert Mikael Colville-Andersen.† can’t please everyone No matter what you do, someone will object to it. â€Å"I stopped worrying about what people thought about my art. You can’t please everyone. everyone and his brother an especially large number of people. â€Å"Everyone and his brother had diplomatic representatives there.† Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Misused Words category, check our popular posts, or choose a related post below:Is She a "Lady" or a "Woman"?The Six Spellings of "Long E"Careful with Words Used as Noun and Verb

Mannerismâ€Art After the High Renaissance

Mannerism- Art After the High Renaissance After the High Renaissance in Italy, many wondered just where art was heading next. The answer? Mannerism. The new style first popped up in Florence and Rome, then the rest of Italy and, eventually, all over Europe. Mannerism, a phrase coined in the 20th century, is what happened artistically during the Late Renaissance (otherwise known as the years between Raphaels death and the beginning of the Baroque phase in 1600). Mannerism also represents Renaissance art going out, as they say, not with a bang but, rather, a (relative) whimper. The High Renaissance was, of course, astonishing. It represented a peak, a height, a veritable zenith (if you will) of artistic genius that surely must have owed something to a favorable zodiac. In fact, the only downside to the whole business was, with the Big Three Names diminished to one (Michelangelo) after 1520, where was art to go? It almost seemed as if art itself said Oh, what the hey. We could never top the High Renaissance, so why bother? Hence, Mannerism. Its not fair, though, to completely blame art for its loss of momentum after the High Renaissance. There were, as there always are, mitigating factors. For example, Rome was sacked in 1527, taken over by the armies of Charles V. Charles (who had previously just been Charles I, King of Spain) had himself crowned as Holy Roman Emperor and got to control things in most of Europe and the New World. By all accounts, he was not particularly interested in sponsoring art or artists- especially not Italian artists. Neither was he enamored with the idea of the independent city-states of Italy, and most of them lost their independent status. Additionally, a troublemaker named Martin Luther had been stirring things up in Germany, and the spread of his radical preaching was causing many to question the authority of the Church. The Church, of course, found this absolutely intolerable. Its response to the Reformation was to launch the Counter Reformation, a joyless, restrictive authoritative movement which had a zero-tolerance policy toward Renaissance innovations (among many, many other things). So here was poor art, deprived of most of its genius, patrons, and freedom. If Mannerism seems a bit half-posteriored to us now, it was honestly about the best that could be expected under the circumstances. Characteristics of Mannerism On the plus side, artists had gained lots of technical knowledge during the Renaissance (such as the use of oil paints and perspective) which would never again be lost to a dark age. Another new development at this time was rudimentary archaeology. The Mannerist artists now had actual works, from antiquity, to study. No longer did they need to use their respective imagination when it came to Classical stylization. That said, they (the Mannerist artists) almost seemed determined to use their powers for evil. Where High Renaissance art was natural, graceful, balanced and harmonious, the art of Mannerism was quite different. While technically masterful, Mannerist compositions were full of clashing colors, disquieting figures with abnormally elongated limbs (often torturous-looking), emotion and bizarre themes that combined Classicism, Christianity, and mythology. The nude, which had been rediscovered during the Early Renaissance, was still present during the Late but, heavens- the poses in which it found itself! Leaving compositional instability out of the picture (pun intended), no human could have maintained positions such as those depicted- clothed or otherwise. Landscapes suffered a similar fate. If the sky in any given scene wasnt a menacing color, it was filled with flying animals, malevolent putti, Grecian columns, or some other unnecessary busy-ness. Or all of the above. Whatever Happened to Michelangelo? Michelangelo, as things turned out, segued nicely into Mannerism. He was flexible, making transitions with his art that dovetailed with the transitions in all of those successive Popes who commissioned his work. Michelangelo had always had a tendency toward the dramatic and emotive in his art, as well as a sort of carelessness toward the human element in his human figures. It probably shouldnt have been surprising, then, to find that restorations of his works in the Sistine Chapel (the ceiling and Last Judgement frescoes) uncovered his use of a rather loud palette of colors. How Long Did the Late Renaissance Last? Depending on whos doing the figuring, Mannerism was en vogue around 80 years (give or take a decade or two). Though it lasted at least twice as long as the High Renaissance, the Late Renaissance got shoved aside, by the Baroque period, fairly quickly (as history goes). Which was a good thing, indeed, for those who are not great lovers of Mannerism- even though it was so distinct from High Renaissance art that it deserves its own name.

A Study Of Using Cultura Project In Selected Universities In Saudi Essay

A Study Of Using Cultura Project In Selected Universities In Saudi Arabia And Australia - Essay Example With the progress of the Cultura methodology in the joint American and French educational institutions, there is an incredibly large potential for the Cultura project to be applied in other educational institutions wishing to be integrated as well. This system of integration can be used by other educational institutions separated by culture as an active classroom system where students are left with the task of learning something while teachers are on stand-by for monitoring purposes. It is with this progress that this paper is founded on. This paper revolves around the analysis of utilizing the Cultura method in joining two different cultures like Arabic and English to be applied with the same treatment. This undertaking will not only verify the effectiveness of Cultura methodology and generality of the findings of Furstenberg, Levet, English & Maillet (2001) but also contribute to the legacy of educational institutions towards cultural literacy. II. Statement of the Problem The study is aimed at determining the effectiveness of the Cultura Project in selected universities within Saudi Arabia and Australia. In addition, the study also aims to determine what would be the effect on cultural literacy and integration between Saudi and Australian schools when they are connected via the Cultura Project. The study would also focus on several facets of the socio-economic grid that are primary or secondary factors to the Cultura Project.

Internal Policies and Procedures Essay Example | Topics and Well Written Essays - 1750 words

Internal Policies and Procedures - Essay Example The ERP platform is designed and implemented to control majority of the business process in the company. The users in the geographically separated locations like 2 factories and 4 sales offices are connected using remote connectivity. This also enables the users to interact with the system in a secure environment to manage workflows. The company is using connectivity through leased lines with direct point-to-point (P2P) connectivity for the factory locations. However, as the sales offices are dispersed across 4 diverse locations, the company is using Internet based connectivity using Virtual Private Networks (VPN) to establish connectivity from these remote locations to the main server housed in the corporate office. As mentioned above, the network connectivity plays an important role in the successful usage of ERP package. In order to have an uninterrupted connectivity, it is important to build a secured network as well as ensuring that it is maintained well. (Kadam Avinash, 2001) Review of current networking setup. The current networking setup was build when the ERP package was implemented. The networking firewall configured at the same time. The Anti virus software was installed at the same time as well. Since, then (3 years back), no effort was spent to update the firewall configuration or anti virus software. On the customer privacy perspective, no encryption of customer data is being done which endangering it to be compromised easily. As the sales locations are using VPN, non encrypted data transfer becomes a sitting duck by the hackers who would want to steal the customer data for corrupt intentions. In certain areas, it was observed that some users are using the vendor provided default passwords and there is no password policy to access the network. The Information Technology (IT) is a dynamic field. Numerous new virus, spywares, malwares or web crawlers are being written by hackers all over the world with intentions to bring down the Information systems in any organization. Hence, a constant up-gradation of the IT systems is necessary so that any attack on the IT system with a potential to bring the business to a halt or compromise of Customer data can be pro-actively prevented. During unplanned/planned system shutdowns or network outage, the data is transferred by emailing the data packets to update inventory and complete workflows exposing the organization's data to be stolen and misused. (Kutzke Todd, 2009) A policy needs to be developed to ensure the constant up-gradation and testing of networking on regular basis so that the system is not susceptible to any possible attacks as well as an access control mechanism needs to be developed for accessing Customer Data by internal company employees. Suggestions for enhancing the current networking setup. Subsequent discussion with the professionals in the IT department has resulted in following

Selection of Global Leadership Assignment Example | Topics and Well Written Essays - 750 words

Selection of Global Leadership - Assignment Example Nevertheless, experts have reacted by instigating broad appraisal concepts covering the obligation to comprehend what is expected from institutional directors, as well as to analyze the mindset along with individual probabilities critical for constructive administration. Though, only minimal basic analysis has been accomplished in the faculty, while a separate recent evaluation in the field has instead opposes most of the reports that were forwarded for the shortage of systematical multiplicity along with logical elasticity. However, generally the appraisal conception is broad and necessitates a lengthy duration to establish as well as to incorporate in the central proficiencies for constructive international direction alongside how to effectually nurture such qualities. Selection practices Among the most dynamic mechanism accessible for global agencies is recruitment; which in the presence of appropriate approach might be the most decisive in appraising latent executive contenders. Even though, integral diversity of an agency as well as the contender could prove to be permanent obstruct during the cross-examination program. Numerous aspects should be weighed when analyzing the ideal mechanism to utilize during a recruitment course, since edifying diversities presents a vast liability in choosing the most predisposed examination practice an agency might adopt to find the most productive workforce. If the company’s resource agent is incompetent of handling cultural diversities imposed by the contenders then the recruitment might definitely result in unconstructive outcome. In such a situation, the foundation would aspire to acquire personnel’s with critical ability to integrate ethical assortments. The interviewee should also be capable of detecting the clandestine distinctions such as eye contact among other individual characters that would represent dissimilar features in separate societies as reported by Mendenhall (2008). According to Edwards ( 2011), numerous models of expression should notably be comprehended for effectual cross-examination program. If recruiting proves to be unfeasible, ethnic understanding entailing various societal coaching concepts might be incorporated to ensure vibrant hiring. Guaranteeing that a recruiter is expansively informed as well as conscious of the duty prior to an interview course should be basic to outlining dynamic staff. Familiarity with the local language can also prove to be an essential device for ensuring an effective interview course. Since the contenders would presume that the agency has no contemplation for the native culture if the executive has not displayed the basic sensitiveness of the surrounding ethnicity and customs. Common variations in linguistics could also result in reflective implication as well as create language obstacles. Over the recruitment course, it might further be extensively constructive to master facts of the interview sessions as well as to be certain th at the contenders have comprehended the relevant inquiries they are to answer (Edwards, 2011). Verifying the scope of hatred that might be apparent between the agency and the immediate contiguous society would also be a prime aspect in outlining an appropriate hiring model. In case there is considerable scope of hatred, then an appraisal model should be adopted to instigate ideal staff for the firm. Assessment might be applied to verify if an aspirant has the precise

Working Capital Management and UK Listed Companies Profitability Dissertation

Working Capital Management and UK Listed Companies Profitability - Dissertation Example Research Question How do the working capital management affect the profitability of manufacturing companies of UK? 2. Aim and Objectives of the Research The research paper will strive to deal with the relationship of companies’ working capital management and their profitability. Working capital management is vital area for the growth and sustainability of companies and hence, it plays very significant role in determining the level of profitability. However, the corporate environment of different countries varies and hence, management of specific region have their different priorities for achieving growth and success. This is the reason correlation between the two or more variables of different regions vary. The primary aim of this paper is to examine the relationship of working capital management with profitability level of the listed manufacturing companies in UK. Working capital management includes number components that determine the efficiency of the management. Considerin g these facts, the research will also focus on certain specific objective as follows. To determine the efficacy of management in managing working capital of manufacturing listed companies of UK. To present and understand theoretical background relating to efficiency of working capital management and company growth. To determine the relationship between different components of working capital management and components of profitability. To determine influence of efficient working capital management on level of profitability and growth in listed manufacturing companies of UK. 3. Literature Review 3.1. Theoretical Background of Research This section will attempt to a theoretical background relation to the working capital management and profitability. Working capital management has always been a very critical area for companies’ growth and sustainability. Working capital mainly includes two basic components i.e. current liabilities and current asset. The efficient management of th ese two types of capital is known working capital management (Siddiqui, 2006, p.279). In order to present a detail background of working capital management, this section will explicitly present need of working capital and its importance for the growth of a company. Next, it will also analyse the different objectives of working capital management. Efficient working capital management is also highly required for managing risks within a company. A company is always exposed to number of risks and the working capital management is directly related to certain risks like operational risks, liquidity risks, credit risks, and information reporting risks. An efficient management of working must assure a lower level of risks. Therefore, working capital management can also be termed as a tool to overcome the stated risks that may create threat to sustainability of a company (Sagner, 2010, p.201). Another major role of working capital management is that it strives to create a trade off between r isk and profitability. In this regard, the risk is technically insolvency which is measure by net working capital (NWC). It has been found that many firms can operate in spite of facing technically insolvency. However, in such case, the company suffered from ‘slow poisoned’ as technically insolvency negatively affect growth, profitability and operational efficacy. If the management is unable to overcome this technically insolvency position, it may lead to business collapse (Khan, 2004, p.26.4). Using the financial techniques like ratio analyses, efficacy level of the working capital can be determined and it also reflect the managements’

Chivalry among men in the novel Essay Example | Topics and Well Written Essays - 2000 words

Chivalry among men in the novel - Essay Example Despite their difference in origin, the two terms referred so much to a similar class of soldiers with similar ideals in proper behavior and conduct that the terms can now be used almost interchangeably. However, the word ‘chivalry’ still works to connote more of the honor code that was held among these fighters, such as the duty to uphold one’s honor regardless of the cost and the charge to protect a woman’s honor to an even greater extent. The Catholic Encyclopedia offers the most complete definition of what the word came to mean by the time Dumas wrote his novel: â€Å"Chivalry †¦ as an institution is to be considered from three points of view: the military, the social, and the religious† (Moeller, 2006). The ideals contained in these three areas can be traced throughout Alexandre Dumas’ novel The Three Musketeers through the characters of D’Artagnan, Athos, Porthos and Aramis. At the very beginning of the novel, the concept of chivalry is introduced as a principle part of D’Artagnan’s upbringing as the reader is given a glimpse into the young man’s leave-taking of his parents. His father advises him, â€Å"At Court, if you ever go to Court, ... be honest and above board with everyone. Always remember your rank and carry on the tradition of good behaviour which your family has been true to for the past five hundred years. †¦ Stand no nonsense from anyone but the King and the Cardinal. Remember, nowadays it’s only by personal courage that a man can get on in the world† (Dumas, 1982, p. 29). This speech sets the tone very early on by which D’Artagnan’s life is to be characterized. In all of his actions, he is expected to be truthful, honest, above board and courageous, repaying every insult given him with immediate and swift retaliation. It also becomes apparent during this speech that D’Artagnan i s indeed of an ancestral line capable of attaining knighthood and is

Working Capital Management and UK Listed Companies Profitability Dissertation

Working Capital Management and UK Listed Companies Profitability - Dissertation Example Research Question How do the working capital management affect the profitability of manufacturing companies of UK? 2. Aim and Objectives of the Research The research paper will strive to deal with the relationship of companies’ working capital management and their profitability. Working capital management is vital area for the growth and sustainability of companies and hence, it plays very significant role in determining the level of profitability. However, the corporate environment of different countries varies and hence, management of specific region have their different priorities for achieving growth and success. This is the reason correlation between the two or more variables of different regions vary. The primary aim of this paper is to examine the relationship of working capital management with profitability level of the listed manufacturing companies in UK. Working capital management includes number components that determine the efficiency of the management. Considerin g these facts, the research will also focus on certain specific objective as follows. To determine the efficacy of management in managing working capital of manufacturing listed companies of UK. To present and understand theoretical background relating to efficiency of working capital management and company growth. To determine the relationship between different components of working capital management and components of profitability. To determine influence of efficient working capital management on level of profitability and growth in listed manufacturing companies of UK. 3. Literature Review 3.1. Theoretical Background of Research This section will attempt to a theoretical background relation to the working capital management and profitability. Working capital management has always been a very critical area for companies’ growth and sustainability. Working capital mainly includes two basic components i.e. current liabilities and current asset. The efficient management of th ese two types of capital is known working capital management (Siddiqui, 2006, p.279). In order to present a detail background of working capital management, this section will explicitly present need of working capital and its importance for the growth of a company. Next, it will also analyse the different objectives of working capital management. Efficient working capital management is also highly required for managing risks within a company. A company is always exposed to number of risks and the working capital management is directly related to certain risks like operational risks, liquidity risks, credit risks, and information reporting risks. An efficient management of working must assure a lower level of risks. Therefore, working capital management can also be termed as a tool to overcome the stated risks that may create threat to sustainability of a company (Sagner, 2010, p.201). Another major role of working capital management is that it strives to create a trade off between r isk and profitability. In this regard, the risk is technically insolvency which is measure by net working capital (NWC). It has been found that many firms can operate in spite of facing technically insolvency. However, in such case, the company suffered from ‘slow poisoned’ as technically insolvency negatively affect growth, profitability and operational efficacy. If the management is unable to overcome this technically insolvency position, it may lead to business collapse (Khan, 2004, p.26.4). Using the financial techniques like ratio analyses, efficacy level of the working capital can be determined and it also reflect the managements’

The Learning and Growth Perspective Essay Example | Topics and Well Written Essays - 750 words - 1

The Learning and Growth Perspective - Essay Example The use of Balanced Scorecard is a very important aspect of the business compared to other performance management strategies; it responds immediately progress, feedback and changing business conditions. Various successful organizations like Futura Industries have used this strategy of the Balanced Scorecard and it is evident that the strategy has positively contributed to the companies’ success over years. A Futura Industries is an international company based in Utah led by Susan Johnson. It has more than 50 years of experience in aluminum design, extruding, fabrication, finishing, and machining. They needed a plan to help the business grow over years. Susan Johnson, the president of Futura Industries came up with the idea of deploying the Balanced Scorecard in the organization. She argued that for success to be evident in the company, employees’ welfare is the key to success. She believed that employees are very important assets to the company that need to be treated w ith utmost care and respect. She says that; Futura does not only require great machines, but also great people. For an organization in its success in its endeavors; â€Å"The opportunity for personal growth is one of the keys to maximizing employee motivation† (Bruce & Pepitone, 1999, p.9). Susan Johnson considered growth, innovation, and learning quadrant of the Balanced Scorecard as the most important aspects for the company’s growth. A company’s success goes hand in hand with its foundation which is molded by the employees. For Futura company success to be evident, Susan Johnson says that the company not only expects success to come from the employees but also its customers. Good Customer care service leaves a promising fact to the company that the customer will still come back someday. The Balanced Scorecard has helped Futura Industries in that, the company set goals and provided a safe, challenging and enjoyable workplace for the employees. Futura industrie s used the strategy of hiring and people and retaining the best people in the market and customer devotion which highly contributed to its competitive advantage with the other rival companies in the market. To maximize employees motivation in Futura, Johnson came up the idea of implementing surveys to the employees such as; Employee friendly initiative at Futura, Birthday Review, Leadership Review, Certification and Training Matrix, and an Annual Performance and Personal Development Review. Performance appraisal in an organization can be widely measured in different aspects as in the case of Futura. It contributes on determining the employees view regarding the company in general and what improvements should be done. Generally, â€Å"productivity can be increased significantly if supervisors set a specific production goal and provide attention and support to the workers† (Grote, 1996, p.6). At the end of every year, employees at Futura Industries complete the Employee Friendl y Initiative survey which records in excess of 60 benefits and other factors that are important to the employee such as; Sports team membership, Medical benefits, spouse scholarships, and flextime options are discussed. The survey asks the employees to give their views about the review benefits. In the case of Birthday Review, the employee is given the review survey in the same

Human resource management activities in healthcare Essay Example for Free

Human resource management activities in healthcare Essay There are many external and internal factors that might affect the health care organizations; however they are more likely to be affected by external forces that in turn affect their daily operations. Some of the factors that affect the human resource department of a healthcare organization are mentioned below. †¢ Economic factors †¢ Social and cultural changes †¢ Technological changes †¢ Legal changes HR planning and analysis Premeditated planning is a procedure that allows the health care associations to direct their future actions utilizing the resources that are accessible to them while keeping in mind the goals of the organization. There are some internal and external strength that have to be taken care of by the association and then a SWOT Analysis should be carried out. Some of the advantages of Human Resource planning are that it permits effectual use of workers and assists to replace the significant vacancies that have to be filled. Furthermore, planning suggests realistic recruitment projections, facilitates the staffing resources to be utilized more proficiently and efficiently and it also allows a improved focused investment in training and retraining, growth, career counseling and efficiency enrichment and also assists to uphold as well as to get better the level of variety. Human Resource planning is a very fundamental part of premeditated planning in addition to strategic HR planning, it assists to examine and classify the need for and accessibility of HR so that the association can meet its goals. Pynes, 2004). Projections aids in appraising the current condition and to estimate future demand and affairs by looking at the history trends of the association and is significant for the associations in a way that it assists to predict the retirement plans of the staff whereas the demand estimate helps to foresee the labor force that would be required in the future. EEO compliance EEO stands for equal employment opportunity and this expression was shaped by President Lyndon B.  Johnson when he marked Executive Order 11246 on September 24, 1965, formed to forbid federal contractors from discerning against workers on the grounds of race, sex, creed, belief, color, or nationality. Recently most managers have also added sexual compass reading to the directory of non-discrimination. The Executive Order as well required contractors to put into practice affirmative achievement plans to augment the contribution of minorities and females in the place of work. Pursuant to federal policy, affirmative achievement plans must comprise of an equivalent opportunity plan statement, an examination of the existing work force, recognition of problem areas, the establishment of objectives and schedules for mounting employment prospects, definite action-oriented plans to tackle problem areas, support for society action plans and the establishment of an internal audit and reporting structure. (EEOC, n. d. ). The reason why employment opportunity equal is important is because it is morally a right way to conduct oneself in the workplace, moreover it also helps in making the business prosper. The way that I move toward civil rights laws and employment civil rights laws, is I in fact think that they are all connected, they are all civil rights laws, anti-discrimination laws in the place of work, whether anti-discrimination on the grounds of race, sex, disability, age, creed or nationality they are all entrenched in the similar bedrock standard and i. e. , that individuals should be judged in the place of work, based upon their capability to carry out the job and not based upon the threats, myths and typecast that one may have because of their race, or gender, or disability, or age, belief or nationality. That is in fact the unifying feature of all of the regulations in which the EEOC puts into practice and imposes, I think that is really significant that is both rising out of my own personal understanding and what I feel is right; that people should be judged based upon their ability to do the job and thats really the very simple core of what we do. And if you sort of take that notion, that principle, one step further, or take it one step, it makes business better. To the extent that youre making employment decisions in the workplace, whether they be on the basis of hiring somebody for a job or promoting somebody for a job, or treating somebody on the job, you ground those workplace decisions in the ability of that individual to do the job, rather than on a stereotype, or a fear, or a myth, because that person is from a different race than you, or a different religion, or looks different, or is older, or doesnt walk, or moves around or communicates in a different way from you. If you base those workplace decisions, upon the ability of that individual to do the job, you will get the most qualified person. You wont let internal biases, or fears, or myths, or stereotypes get in the way of selecting the best qualified person. Therefore I think, it is in best interest of the business to strip away those typecasts, those threats and those myths, in order to obtain the best competent person, because then company will really be improved. The Quotations page, n. d. ). Other considerations Some of the other considerations the human resource management in the health care organizations has to take care of are staffing, development of employees, compensation, health, safety and employee and maintaining labor management relation. Staffing The HR department must ensure that a fair selection policy is being used when hiring a candidate and everyone should be given an equal opportunity. Moreover, the job should be made available for every person who has the potential to do it and for this both internal and external recruitment should be opted for. Other than this, it is also essential to provide clear job criteria for the vacancies that are being announced by the human resource department of a healthcare organization. Full supervision must be done to ensure that the right candidate has been hired after which training should be provided to him. (Shi, 2006). Development of employees Health care organizations should invest in training to augment individual performance and organizational productivity, moreover it should also focus on developing management skills/development and supervisory skills, technical skills and communication skills and provide training to the employees who are new in the organization especially the ones who are working or are hired for lower-level positions in order to augment their performance. Compensation This comprises the wages and bonuses, vacation payment, sick leave payments, recompense of the staff and insurance policies, etc. , it is HR Department that is in command to expand and to direct the benefits compensation structure for the workers that serve as an incentive to promise the staffing. Their objective does not just come to an end after staffing but they also have to work on retaining workers and make them stay on with the organization. Once the employee is hired, it is the duty of the benefits coordinator to explain the benefits and the incentives the employee can expect from the organization so that the employee is aware about it in the beginning and he does not get discouraged later onwards. Health and safety It is essential for the organization to ensure safety of employees at the workplace and the health care organizations must their employees’ health and medical benefits and the employees should be given free medical services. Employee management relation and Labor management relation It is essential for the HRM at the healthcare organization to avoid any kind of discrimination in context with the age, gender, race or religion of an employee and it is basically the duty of the HR department to take care of this so that fair treatment is given to each and every person. Moreover, the HR department must also provide the assistance of negotiation in case any issues arise between the employees working at any level in the organization in order to ensure a healthy work environment. In the same way, the HR department also has to manage the labor and have good terms with them as well. (Leat, 2001).

Speech and Language Therapist (SLT) Role and Ethics

Speech and Language Therapist (SLT) Role and Ethics Role Investigation This essay will investigate a vocational role as a Speech and Language Therapist (SLT). It will cover the role, where the role may be needed and will operate, what qualifications are needed to become a SLT, and what psychological theories are used and applied when working as a SLT. The essay will then cover the ethics required of a SLT and the skills needed because of them. A SLT role requires working with people of all ages with various levels of speech language and communication problems. Such problems can occur when they have difficulties swallowing, drinking or eating. Typical clients they deal with have physical and learning disabilities, hearing loss/deafness, psychiatric disorders or dementia. They help by assessing and identifying the difficulties/disorders the client has and then create and implement a suitable treatment program. They will then continue to see the client on a one-to-one basis to assess the developments made. They will also teach the client’s family, social workers, and teachers on how to communicate effectively to help clients outside their therapy sessions (editors, 2012). The average salary for a SLT could range from  £21,176- £27,625 if they are part of the NHS, but you could go into a specialist role outside of the NHS and the salary range is  £25,528- £34,184. Another option is the work as a freelance SLT. SLTs work within schools, hospitals, health centres, day care centres, rehabilitation unit, client’s homes, prisons and young offender’s institutions. SLTs work typically 9-5, and they could work in several locations (editors, 2012). The training and qualification needed to be a SLT is a degree accredited by the Royal College of Speech and Language Therapists (RCSLT). A degree in Psychology will better the chances of getting onto the post-graduate 2 year course, which needs to be taken to get the accreditation. SLTs also need to be a registered member of Health care Professionals Council (HCPC) (AGCAS, 2012). Although a specialist speech and language therapist may require additional skills and training. For example a speech and language therapist in a special needs school may learn Makaton sign language because some children may not be able to communicate effectively. Using signs may help adults understand children which will relieve frustration and reduce anxiety which in turn should help facilitate communication (Enderby, et al., 2009). Speech and language is something quite unique to humans so a lot research has been done into the acquisition and the development of language (Pinker, 1995). Theories are constantly evolving and adapting and speech and language therapists must recognise these and adapt their strategies accordingly (Latham Miles, 2001). The behaviourist approach to language development is that it is learnt in response to a stimulus that gives a pleasant reward (Latham Miles, 2001). This is how a child will associate words with meanings and therefore reinforce the importance of communication and using words. For example Skinner proposed that a child will point and say â€Å"drink†, the child is then rewarded with the drink. The child then associates the word drink with getting a drink and will carry on using it whenever they want one (Skinner, 2014). This is supported by Sundberg, Micheal, Partingtin, Sundberg, (1995) who did a study on five children between two and four-years-old, four had moderate language delays and one typically developing child. They performed the targeted response, i.e. sound, word or phrase, after the conditioned reinforcement was established and then established new vocal responses. For example a subject wanted to be tickled (which was the reinforcement), so said the paired word â€Å"apple†, eventually she started saying â€Å"tickle†. However this study was only done on 5 subjects so its sample size is not relaible enough to generalise universally. Although speech and language therapists could use positive reinforcement as a technique in their sessions, it could be particuarly helpful when working with children. SLTs use games where when they win or complete the task they are intrinsically motivated. Extrinsic rewards do help however the child may get too excited by the reward and their attention turns to the reward rather than the task. Also they may find that the child doesn’t have reward outside the session therefore doesn’t use the communication skills learnt in session outside, in classrooms or at home (Boyle, McCartney, Forbes, OHare, 2007). Also it is important if a SLT is working with someone with mutism or selective mutism to reward every type of communication, no matter how small, whether it be verbal or head shaking. A SLT will talk to teachers and parents/carers to see these small signs of commmunication and how to positively respond to them (Aberdeenshire Council, 2013). This behaviourism technique is what allows children to associate words with meanings however if a child is impaired in this area a SLT may find other ways to allow a child to communicate. For example teaching Makaton signs or using symbols and pictures that they can point to (Roulstone, Wren, Bakopoulou, Goodlad, Lindsay, 2010). However Skinners approach was criticised because it does not explain how people come to put sentences together (Albery, et al., 2008). This point was made by Chomsky, he believed that language was a human instinct (Pinker, 1995) and that the sentence structure was very important in being understood and that a child through behaviourism alone could not learn all of the grammatical rules in his/her language (Chomsky, 1967). For example the sentence â€Å"the cat was on the basket† differs in meaning from â€Å"the basket was on the cat†, Chomsky believed that the order was essential to get a message across (Chomsky, 1967) (Latham Miles, 2001). Chomsky believed that children could understand grammatical rules through their Language Acquisition Device (LAD) and universal grammar. They hear the language, through the LAD, they then pick up on the grammatical rules of language in their universal grammar and then it is put forward to the LAD (cited by Albery, et al., 2008). Th is can explain how children overgeneralise grammar for example when they say â€Å"wented† or â€Å"goed† (Albery, et al., 2008). This can be supported by Berko, children were asked questions to find out whether they knew grammatical rules and could apply them to made-up words. For example they were showed a picture of a â€Å"wug† and asked what two were called. Instead of saying they didnt know because they have never been told, they called them â€Å"wugs†. However this study was done on only English native speakers so it does not prove if children have access to universal grammar rules, it may just suggest children listen and remember grammar rules of the languages they have been exposed to (Berko, 1958). Most people who have suffered from a stroke may know what single words mean but may struggle when it comes to putting sentences together. So its the SLT role to focus on tasks that will facilitate the patient’s ability to construct sentences. They could do this through arranging words on flash cards into sentences (Stroke Association, 2012) Another theory that SLTs use are the stages of language acquisition. At around 7 week’s babies a thought to start the â€Å"cooing† stage, this involves sounds that include vowels like â€Å"ooh† and â€Å"aaaa†. At 7 months children are believed to start the babbling stage such as ‘bodadda† (Albery, et al., 2008). SLTs will use this as guidelines to decide whether a child is developing their language normally. Latham Miles (2001) created a framework which is used to assess where a child is in their language development and interventions to help the child move onto the next band. For example band one the child can express themselves through vocalising, facial expressions, pointing and gestures. The interventions suggested at this stage are for an adult to respond to the child’s attempts of communication and actively play turn taking games with them. This should then help the child move onto band two. The SLTs job will be to continuously assess and evaluate the child’s progress and put in place interventions that parents and carers can do at home to help the child progress. This is a part of the SLTs ethics guide, they must ensure they are making fair and appropriate assessments, judgements, diagnosis and treatment interventions. They must ensure they put the client first and make decisions that would most benefit them based on knowledge and up-to-date research. They must also ensure they are keeping records of all the sessions they have with their clients so that there is a record of progression. It is important they maintain client confidentiality at all times. Above all they must protect their clients and themselves by maintaining a safe, appropriate, and professional environment and relationship (HCPC, 2014). The skills needed to be a SLT because of the type of role are efficiency, to ensure you are on top of all paper work and recent research. They must be able to work with and enjoy working with lots of different types of people, from children to the elderly, and have the patience to listen and help clients. And they must be good at problem solving and creating effective and inventive interventions that will work for specific individuals. In conclusion SLTs have a very diverse job which is changing all the time, from the types of people who require their service, the research behind the service given and what they can do to help their clients. They must constantly be on top of whether their treatments are working and change them accordingly, this means they must be on top of research and take into account both nurture and nature sides of language acquisition. However the role seems creative, rewarding and it seems that they could do something and work with somebody different every day. References Aberdeenshire Council. (2013). Supporting Children with Selective Mutism. Aberdeenshire: Aberdeenshire Council. AGCAS. (2012, December). Speech and Language therapist, entry requirements. Retrieved October 28, 2014, from Prospects: www.prospects.ac.uk/speech_and_language_therapist_entry_requirements.htm Albery, I. P., Chandler, C., Field, A., Jones, D., Messer, D., Simon, M., Sterling, C. (2008). Complete Psychology (2nd ed.). (G. Davey, Ed.) London: British Libuary Cataloguing in Publication Data. Berko, J. (1958). The Childs Learning of English Morphology. Word, 14, 150-177. Boyle, J., McCartney, E., Forbes, J., OHare, A. (2007). Language Therapy Manual: health technology assessment 2007. Strathclyde: University of Strathclyde. Chomsky, N. (1967). A Review of B.F. Skinners Verbal Behavior. Readings in the Psychology of Language, 142-143. editors, A. (2012, December). Speech and language therapist, job description. Retrieved October 28, 2014, from Prospects: www.prospects.ac.uk/speech_and_language_therapist_job_description.htm editors, A. (2012, December). Speech and language therapist, salary and conditions. Retrieved October 28, 2014, from Prospects: www.prosoects.ac.uk/speech_and_language_therapist_salary.htm Enderby, P., Pickstone, C., John, A., Fryer, K., Cantrell, A., Papaioannou, D. (2009). Resource Manual for Commissioning and Planning Services for SLCN. Royal College of Speech and Language Therapists. HCPC. (2014, June 11). Speech and Lanuage Therapists- Standards of Proficency. HCPC- health and care professions council. Retrieved January 21, 2015, from HCPC: Health Care Professions Council: www.hcp-uk.org/assets/documents/10000529Standards_of_Proficiency_SLTs.pdf Latham, C., Miles, A. (2001). Communication, Cirriculum and Classroom Practice. London: David Fulton Publishers Ltd. Pinker, S. (1995). The Language Instinct. London: Penguin Books. Roulstone, S., Wren, Y., Bakopoulou, I., Goodlad, S., Lindsay, G. (2010). Exploring interventions for children and yound people with speech, language and communication needs: A study of practice. Bristol: Department of Education. Skinner, B. (2014). Verbal Behavior. B.F. Skinner Foundation. Retrieved from store.behavior.org/resources/595.pdf Stroke Association. (2012, April). Communication Problems. Retrieved January 21, 2015, from Stroke: www.stroke.org.uk/factsheet/speech-and-language-therapy-after-stroke Sundberg, M. L., Micheal, J., Partingtin, J. W., Sundberg, C. A. (1995). The role of automatic reinforcement in early language acquisition. Analysis of Verbal Behavior, 13, 21-37.

Quote Analysis from Shakespeares Hamlet :: essays research papers

Hamlet, a play written by the prominent writer, Shakespeare, is about a Danish prince whose father was murdered by his uncle who then married his mother. The story follows Hamlet for a time period of a few months while he decides how to deal with the situation of his uncle and mother. An important rising conflict is Hamlet?s soliloquy during act III scene I, where he finally realizes the significance of his actions towards his uncle, Claudius. Fortinbras? prompt rebuttal against Denmark for his father?s murder intrigued Hamlet and made him examine the emphasis needed to be placed on the death of his own father. Throughout the soliloquy, Hamlet mentions many thoughts surrounding this dilemma and shows a deeper, more will-powered side of himself. ?To be or not to be- that is the question, although this quote is only a mere ten words, its value is innumerable. Hamlet is contemplating life and death, not only for himself, but also for Claudius. He is considering committing suicide with all the pressures placed on him by his father?s ghost and his conscience knowing the truth regarding his predecessor?s murder. Hamlet is questioning whether or not it is better to live everyday waking up and seeing his step-father who had once been known solely as his uncle, and acknowledging the crime committed. Or is it more beneficial to simply to concede defeat and kill himself, relinquishing himself from performing the very deadly sin he condemns Claudius for doing. Hamlet then moves on to discuss death and metaphorically relates it to an endless sleep that ends all heartache. The thought of eternally sleeping seemed appealing for him, but then he continues to analyze it, and determines there must be a reason people live miserable lives. Simply put, humanity is afraid of death, but if it is merely a long nap, what is there to fear? Therefore, Hamlet decides that the dreams experienced after death is worse than those wretched lives. This thought may have given him new look on life, or he could have just possibly realized that he was the only person left to defend his father?s honor, but later in the story, Hamlet has a sudden change of heart and resolves that he will kill Claudius no matter the obstacles in his path. Quote Analysis from Shakespeare's Hamlet :: essays research papers Hamlet, a play written by the prominent writer, Shakespeare, is about a Danish prince whose father was murdered by his uncle who then married his mother. The story follows Hamlet for a time period of a few months while he decides how to deal with the situation of his uncle and mother. An important rising conflict is Hamlet?s soliloquy during act III scene I, where he finally realizes the significance of his actions towards his uncle, Claudius. Fortinbras? prompt rebuttal against Denmark for his father?s murder intrigued Hamlet and made him examine the emphasis needed to be placed on the death of his own father. Throughout the soliloquy, Hamlet mentions many thoughts surrounding this dilemma and shows a deeper, more will-powered side of himself. ?To be or not to be- that is the question, although this quote is only a mere ten words, its value is innumerable. Hamlet is contemplating life and death, not only for himself, but also for Claudius. He is considering committing suicide with all the pressures placed on him by his father?s ghost and his conscience knowing the truth regarding his predecessor?s murder. Hamlet is questioning whether or not it is better to live everyday waking up and seeing his step-father who had once been known solely as his uncle, and acknowledging the crime committed. Or is it more beneficial to simply to concede defeat and kill himself, relinquishing himself from performing the very deadly sin he condemns Claudius for doing. Hamlet then moves on to discuss death and metaphorically relates it to an endless sleep that ends all heartache. The thought of eternally sleeping seemed appealing for him, but then he continues to analyze it, and determines there must be a reason people live miserable lives. Simply put, humanity is afraid of death, but if it is merely a long nap, what is there to fear? Therefore, Hamlet decides that the dreams experienced after death is worse than those wretched lives. This thought may have given him new look on life, or he could have just possibly realized that he was the only person left to defend his father?s honor, but later in the story, Hamlet has a sudden change of heart and resolves that he will kill Claudius no matter the obstacles in his path.

My Father’s Death

My Father’s Death I had always thought that all little girls had the same dream as me. Ever since I was a little girl, I dreamed of the day that I would get married; the most important moment would be walking down the aisle by the arm of my father. My father is one of the most important persons in my life. He is my hero, my motivation, my everything. It never passed through my mind that I would have to struggle with many difficult phases at such a young age. When I started to attend middle school, I lived in Matamoros. My first day of classes in middle school was different.It was different because the person who always dropped me off at school on my first day was not with me, â€Å"my father. † My father could not be with me because he had just started getting sick. He had some problems with his liver. His body threw away the proteins as well his blood. I remember the first time he threw up blood; that moment my mom became very worried, and nervous. I was just 13 years old when this incident happened and it was just a few days before I started my first day of middle school. During this time, we had our first visit to the hospital, and most of the visits to the hospital were for blood transfusions.After three years, when I graduated from middle school and my father was a little bit better, I decided to move to San Benito to start high school. I lived in San Benito with my father’s brother, Jose, for just six weeks because I had some problems with my relatives, so I moved to Brownsville. There I lived with my father’s sister my aunt Laura. It was more difficult to make a drastic change in less than two months. I had to adapt to Brownsville. They were two different towns and it took me more time to adapt to living without my parents and my two brothers; I lived with my uncle and my aunt because my parents are not U.S. citizens and they did not have a visa. School in San Benito was easier for me; in contrast, Brownsville’s schools were more difficult. It was weird that people in San Benito spoke Spanish. While on the other hand Brownsville spoke English, even though it is closer to Mexico than San Benito. In the end, it helped me a lot because I do not know all the English language very well, but what I know it’s thanks to that. I just lived for eight months with my aunt Laura. So the following three years of High School, I stared to cross the bridge every single day.Before I got back to school from summer vacation I started noticing that my dad was feeling sick again, and I heard my mom crying and saying that my dad had cancer. I was not supposed to know this, but I was behind the door. At the beginning of 2007, my father started complaining about a pain in his coccyx. When my dad went to the doctor, he told the doctor that he felt something was hurting him in his back. The doctor did not pay too much attention to that but every time that my dad went to see him, he said the same information.My dad st arted attending some therapies in order to take away the pain; unfortunately they were in vain because we started noticing that the cancer had increased, and he was getting sicker every day. That year my summer was too long and very exhausting because my dad was in the hospital for almost two months. He went into surgery for his pain in his coccyx, but after the operation, he said that he felt pain in one of his legs, which we thought that was produced by the surgery. When he got out of the hospital, he could not walk or sit down anymore. All he could do was just lay in bed.It changed our lives tremendously. My senior year in school began. I just had to pass the science section of the test. At this time I had to divide my time into my personal time, taking care of my dad, doing homework, and helping my mom in the store and cleaning the house. I almost went insane; I did not have a life. When time for TAKS came around, it was peculiar that my dad got in critical conditions but just i n the day that I had to take the Science one. I even thought that my dad had to die in order for me to pass my test; ironically it became true.As days passed by, I got tired from crossing the bridge. When I am talking about crossing the bridge every single day a person whose does not have a life like mine can not imagine what it is like to really wait in a line of at least one hour. I have to wake up early in the morning, and the weather sometimes was cloudy, rainy, windy, or cold. Besides all this, I had to take the city bus to get to school. It was fine for me but sometimes the bus was late or if the bus broke down they took us in a van but the problem was that they gave preference to the elderly instead of the students.It is a chaos to have or to live a situation like this. In September, my father had his first encephalopathy: he was in a comma, but had no ventilator. He was in that critical state just for a week the first time. The day that he woke up, my nephew was born, and he did not remember anything except that. During the Thanksgiving holiday, the situation in my house became more intensive. My dad was in his last phase. One day before Thanksgiving, he entered his second and last encephalopathy and never woke again. The last word that he yelled was â€Å"Manue,† my mom’s name, and he went in again into a critical state.I felt that my world and my life were going down; I felt sadness, fear, and hopelessness, etc. On Saturday, the priest came and put Holy Oils on my father. After that my mom said that my dad could die at any moment; she said I had to be prepared for whatever was going to happen. I started to pray in front of his bed and I said â€Å"Dear God: I’m very thankful to you because you gave me the most wonderful father that a girl can have. If it is your decision to take my father with you, I will accept it. I know it will be difficult but I know you’ll never let me give up.Amen† That night was the longest n ight I ever had; I kissed my father for the last time. The next day was Sunday; my family started arriving to my house because we saw that my father was in his last stage and that at any moment he could die. At 10 A. M. he was had some convulsions my mom, my brothers and I started to pray; at 11:25 A. M. he died in my house. I dropped myself into his body and I stared crying and saying â€Å"Porque te lo llevaste? †(Why did you take him? ). I could not believe that my dad had gone. I felt that everything would not be the same, that my life would stop in all senses.During the funeral I always thought that it was easy to receive the condolence; but the reality was the opposite. The thoughts that passed through my mind in that time was that my dad was on a trip and that he would be back soon. When I got near to the coffin I realize that it was true that he died. In the funeral I never cried. I contained the desire to cry. After the funeral passed I did not want to return to scho ol because I thought that it did not have sense to continue with my future if my dad was not with me supporting me.After a week, I returned to school. I had to go back to my life even though my heart was bleeding and felt empty. I passed my TAKS, exactly like I said it would happen; my father had to die in order for me to pass and graduate from High School. It was difficult to handle but I had to learn to live with this pain in my heart and make myself the idea that he is in a better place, without pain, where there is no suffering, that he is in the God’s hands. I passed all my classes and in June 9th, 2008 I graduated from High School.That day was one of the most important in my life and I know that my dad feels proud of me. In the Fall I stared college and now I am in my second semester. Now I understand that I was wrong when I thought that my life had to stop. Now my dad is my motivation to continue with my studies, my career and my life. Thank you daddy!! This experience helped me mature as a person. My father will always be my motivation, even though I still dream with that important day. I know that if I get married my dad will be with me inside of my heart walking down the aisle as if he were by my side holding my arm.

History of Brazil Essay

It is a matter of fact that Brazil is a country of contrasts. One can easily observe that the development of this nation is incredibly uneven. Taking into consideration their past experience, the Brazilians are seeing some very good times as a nation. Certainly, they have overcrowding problems. However, each country has its own difficulties and tries to overcome them. Thus, the diversity of this country and its amazing history has brought a â€Å"mixing bowl† of culture preparing a bright future for Brazil. It is widely known that four major groups make up the Brazilian population. They are the Portuguese, who colonized Brazil in the 16th century; Africans brought to the country as slaves; various European, Middle Eastern, and Asian immigrant peoples who have settled in Brazil since the mid-19th century; and indigenous people of Guarani and Tupi language. (Skidmore, 131) Brazil is the only Latin American nation that takes its language and culture mainly from Portugal. Intermarriage between indigenous people or slaves and the Portuguese was a common phenomenon. Despite the fact that the major European ethnic culture of Brazil was once Portuguese, waves of immigration have greatly contributed to a diverse ethnic and cultural heritage. Admiral Pedro Alvares Cabral claimed Brazilian territory for Portugal in 1500. The early explorers brought back a wood with them that produced a red dye, pau-brasil. This is where the land received its original name. Portugal began colonization in 1532 and made the area a royal colony in 1549. During the Napoleonic Wars, fearing the advancing French armies, King Joao VI left the country in 1808 and set up his court in Rio de Janeiro. He was brought home later in 1820 by a revolution, leaving his son as regent. When Portugal wanted to reduce Brazil to colonial status again, the prince declared Brazil’s independence on Sept. 7, 1822. Thus, he became Dom Pedro I, emperor of Brazil. Harassed by his Parliament, Pedro I resigned in 1831 in favor of his five-year-old son who became emperor Dom Pedro II in 1840. Emperor Pedro II ruled to 1889 when a federal republic was established as a result of a coup d’etat organized by Deodoro da Fonseca, marshal of the army. A year earlier, while Dom Pedro II was in Europe, the Regent Princess Isabel had abolished Slavery. Abreu, 311) Dom Pedro II was a popular monarch. Yet discontent grew up and, in 1889, he had to resign because of a military revolt. Although a republic was proclaimed at that time, Brazil was ruled by military dictatorships until a revolt allowed returning gradually to stability under civilian presidents. From 1889 to 1930, the government was a const itutional democracy. The presidency was alternating between the dominant states of Sao Paulo and Minas Gerais. This period ended with a coup d’etat that placed a civilian, Getulio Vargas, in the presidency. He remained as a dictator until 1945. From 1945 to 1961, presidents of Brazil became Eurico Dutra, Vargas, Juscelino Kubitschek, and Janio Quadros. When Quadros abdicated in 1961, he was succeeded by Vice President Joao Goulart. (Abreu, 329) Goulart’s years in office were marked by high inflation, total economic failure, and the increasing influence of radical political parties. The armed forces alarmed by these developments organized a coup d’etat on March 31, 1964. The coup leaders chose Humberto Castello Branco a president, followed by Arthur da Costa e Silva (1967-69), Emilio Garrastazu Medici (1968-74), and then Ernesto Geisel (1974-79). All of them were senior army officers. Geisel began a liberalization that was carried further by his successor, General Joao Baptista de Oliveira Figueiredo (1979-85). In the last of a long series of military coups, General Joao Baptista de Oliveira Figueiredo became president in 1979. He pledged a return to democracy in 1985. Figueiredo not only allowed the return of politicians exiled or banned from political activity during the 1960s and 1970s, yet also permitted them to run for state and federal offices in 1982. (Alden, 284) However, at the same time, the Electoral College consisting of all members of Congress and also six delegates chosen from each state continued its activities of choosing the president. The election of Tancredo Neves on January 15, 1985, the first civilian president since 1964, brought a nationwide wave of optimism and activity. He was elected from the opposition Brazilian Democratic Movement Party (PMDB). (Alden, 287) However, when Neves died on April 21, Vice President Sarney became president. The latter was widely distrusted because he had previously been a devoted member of the military regime’s political party. Collor de Mello won the election of late 1989 with 53% of the vote in the first direct presidential election in his 29 years. (Abreu, 378) Mello promised to lower the persistent hyperinflation by following the path of free-market economics. Having faced impeachment by Congress because of a corruption scandal in December 1992, Mello finally resigned. Vice President Itamar Franco took his place and assumed the presidency. Fernando Cardoso, a former finance minister, won the presidency in the October 1994 election having 54% of the vote. He took office on January 1, 1995. (Skidmore, 232) Cardoso has organized the disposal of bad government-owned monopolies in the electrical power, telecommunication, port, railway, mining, and banking industries. His timely proposals to Congress included constitutional amendments in order to open the Brazilian economy to greater foreign participation and to implement such sweeping reforms as social security, government administration, and taxation so as to reduce excessive public sector spending and considerably improve government efficiency. Alden, 298) During his short time in the office, Cardoso’s economic wisdom has made a measurable progress in overcoming Brazil’s poverty level. It is remarkable to observe how the Brazilian government makes certain efforts in order to address basic needs of its people such as education, distribution of meals, health care, and the promotion of children’s rights. Co-signed by the President of Brazil and 24 state governors, the â€Å"Pact for the Children† is intended to fully implement the constitutional and legal obligations providing for protection of children and adolescents. Several federal agencies supervise the execution of government programs for children and adolescents aimed to give Brazilian youth opportunities for a better life, shelter, education, and love. Thus, if not forgetting about the past mistakes and taking care of its nation, the Brazilians will surely come to the brightest future.

Street Light

INDEX |S.NO |TITLE |PAGE NO | |1 |Introduction |1 | |2 |Solar Energy |4 | |3 |Photovoltaics |24 | |4 |Solar Cell |28 | |5 |Solar Roadway |51 | |6 |Component description |55 | |7 |Working of Project |82 | |8 |Conclusion |86 | |9 |Images |91 | |10 |Bibliography |93 | INTRODUCTION INTRODUCTION: Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies.Solar energy technologies include solar heating, solar photovoltaics, solar thermal electricity and solar architecture, which can make considerable contributions to solving some of the most urgent energy problems the world now faces. Solar power is the conversion of sunlight into electricity, either directly using photovoltaic (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics convert light into electric cur rent using the photoelectric effect. A Street light, lamppost, street lamp, light standard, or lamp standard is a raised source of light on the edge of a road or walkway, which is turned on or lit at a certain time every night.Modern lamps may also have light-sensitive photocells to turn them on at dusk, off at dawn, or activate automatically in dark weather. In older lighting this function would have been performed with the aid of a solar dial. It is not uncommon for street lights to be on posts which have wires strung between them; such as on telephone poles or utility poles. New street lighting technologies, such as LED or induction lights, emit a white light that provides high levels of scotopic lumens allowing street lights with lower wattages and lower photopic lumens to replace existing street lights. Photovoltaic-powered LED luminaires are gaining wider acceptance.Preliminary field tests show that some LED luminaires are energy-efficient and perform well in testing environme nts. This project is a LED based Solar Lights is an automatic street lightening system using a LDR and 6V/5W solar panel. During day time, the internal rechargeable battery receives charging current from the connected solar panel. Here IC 555 is wired as a medium current inverting line driver, switched by an encapsulated light detector (LDR). When ambient light dims, the circuits drive the white LEDs. When the ambient light level restores, circuit returns to its idle state and light(s) switched off by the circuit. Block Diagram: SOLAR ENERGY SOLAR ENERGYSolar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar energy technologies include solar heating, solar photovoltaics, solar thermal electricity, solar architecture and artificial photosynthesis, which can make considerable contributions to solving some of the most urgent energy problems the world now faces. Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy.Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air. In 2011, the International Energy Agency said that â€Å"the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries’ energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating climate change, and keep fossil fuel prices lower than otherwise. These advantages are global.Hence the additional costs of the incentives for early deployment should be co nsidered learning investments; they must be wisely spent and need to be widely shared†. The Earth receives 174 petawatts (PW) of incoming solar radiation (insolation) at the upper atmosphere. Approximately 30% is reflected back to space while the rest is absorbed by clouds, oceans and land masses. The spectrum of solar light at the Earth's surface is mostly spread across the visible and near-infrared ranges with a small part in the near-ultraviolet. Earth's land surface, oceans and atmosphere absorb solar radiation, and this raises their temperature. Warm air containing evaporated water from the oceans rises, causing atmospheric circulation or convection.When the air reaches a high altitude, where the temperature is low, water vapor condenses into clouds, which rain onto the Earth's surface, completing the water cycle. The latent heat of water condensation amplifies convection, producing atmospheric phenomena such as wind, cyclones and anti-cyclones. Sunlight absorbed by the o ceans and land masses keeps the surface at an average temperature of 14  °C. By photosynthesis green plants convert solar energy into chemical energy, which produces food, wood and the biomass from which fossil fuels are derived. The total solar energy absorbed by Earth's atmosphere, oceans and land masses is approximately 3,850,000 exajoules (EJ) per year. In 2002, this was more energy in one hour than the world used in one year.Photosynthesis captures approximately 3,000 EJ per year in biomass. The technical potential available from biomass is from 100–300 EJ/year. The amount of solar energy reaching the surface of the planet is so vast that in one year it is about twice as much as will ever be obtained from all of the Earth's non-renewable resources of coal, oil, natural gas, and mined uranium combined. Solar energy can be harnessed at different levels around the world, mostly depending on distance from the equator. [pic] Average insolation showing land area (small black dots) required to replace the world primary energy supply with solar electricity. 18 TW is 568 Exajoule (EJ) per year.Insolation for most people is from 150 to 300 W/m2 or 3. 5 to 7. 0 kWh/m2/day. Solar energy refers primarily to the use of solar radiation for practical ends. However, all renewable energies, other than geothermal and tidal, derive their energy from the sun. Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight. Active solar techniques use photovoltaic panels, pumps, and fans to convert sunlight into useful outputs. Passive solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun.Active solar technologies increase the supply of energy and are considered supply side technologies, while passive solar technologies reduce the need for alternate resources and are g enerally considered demand side technologies. APPLICATIONS OF SOLAR TECHNOLOGY Average  insolation  showing land area (small black dots) required to replace the world primary energy supply with solar electricity. 18 TW is 568 Exajoule (EJ) per year. Insolation for most people is from 150 to 300 W/m2  or 3. 5 to 7. 0 kWh/m2/day. Solar energy refers primarily to the use of  solar radiation  for practical ends. However, all renewable energies, other than  geothermal  and  tidal, derive their energy from the sun. Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight.Active solar techniques use photovoltaic panels, pumps, and fans to convert sunlight into useful outputs. Passive solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun. Active solar technologies incr ease the supply of energy and are considered  supply side technologies, while passive solar technologies reduce the need for alternate resources and are generally considered demand side technologies ARCHITECTURE AND URBAN PLANNING [pic] Darmstadt University of Technology  in Germany  won the 2007  Solar Decathlon  in Washington, D. C. with this  passive house designed specifically for the humid and hot subtropical climate.Sunlight has influenced building design since the beginning of architectural history. Advanced solar architecture and urban planning methods were first employed by the  Greeks  and  Chinese, who oriented their buildings toward the south to provide light and warmth. The common features of  passive solar  architecture are orientation relative to the Sun, compact proportion (a low surface area to volume ratio), selective shading (overhangs) and  thermal mass. When these features are tailored to the local climate and environment they can produce well-lit spaces that stay in a comfortable temperature range. Socrates'  Megaron House is a classic example of passive solar design.The most recent approaches to solar design use computer modeling tying together  solar lighting,  heating  and  ventilation  systems in an integrated  solar design  package. Active solar equipment such as pumps, fans and switchable windows can complement passive design and improve system performance. Urban heat islands (UHI) are metropolitan areas with higher temperatures than that of the surrounding environment. The higher temperatures are a result of increased absorption of the Solar light by urban materials such as asphalt and concrete, which have lower  albedos  and higher  heat capacities  than those in the natural environment. A straightforward method of counteracting the UHI effect is to paint buildings and roads white and plant trees.Using these methods, a hypothetical â€Å"cool communities† program in  Los Ang eles  has projected that urban temperatures could be reduced by approximately 3  Ã‚ °C at an estimated cost of US$1  billion, giving estimated total annual benefits of US$530  million from reduced air-conditioning costs and healthcare savings. [23] AGRICULTURE AND HORTICULTURE [pic] Greenhouses  like these in the Westland municipality of the  Netherlands  grow vegetables, fruits and flowers. Agriculture  and  horticulture  seek to optimize the capture of solar energy in order to optimize the productivity of plants. Techniques such as timed planting cycles, tailored row orientation, staggered heights between rows and the mixing of plant varieties can improve crop yields. [24][25]  While sunlight is generally considered a plentiful resource, the exceptions highlight the importance of solar energy to agriculture.During the short growing seasons of the  Little Ice Age, French and  English  farmers employed fruit walls to maximize the collection of solar energ y. These walls acted as thermal masses and accelerated ripening by keeping plants warm. Early fruit walls were built perpendicular to the ground and facing south, but over time, sloping walls were developed to make better use of sunlight. In 1699,  Nicolas Fatio de Duillier  even suggested using a  tracking mechanism  which could pivot to follow the Sun. [26]  Applications of solar energy in agriculture aside from growing crops include pumping water, drying crops, brooding chicks and drying chicken manure. [27][28]  More recently the technology has been embraced by vinters, who use the energy generated by solar panels to power grape presses. [29]Greenhouses  convert solar light to heat, enabling year-round production and the growth (in enclosed environments) of specialty crops and other plants not naturally suited to the local climate. Primitive greenhouses were first used during Roman times to produce  cucumbers  year-round for the Roman emperor  Tiberius. [30]à ‚  The first modern greenhouses were built in Europe in the 16th century to keep exotic plants brought back from explorations abroad. [31]  Greenhouses remain an important part of horticulture today, and plastic transparent materials have also been used to similar effect in  polytunnels  and  row covers. TRANSPORT AND RECONNAISSANCE [pic] Australia hosts the  World Solar Challengewhere solar cars like the Nuna3 race through a 3,021  km (1,877  mi) course from Darwin to Adelaide.Development of a solar powered car has been an engineering goal since the 1980s. The  World Solar Challenge  is a biannual solar-powered car race, where teams from universities and enterprises compete over 3,021 kilometres (1,877  mi) across central Australia from  Darwin  to  Adelaide. In 1987, when it was founded, the winner's average speed was 67 kilometres per hour (42  mph) and by 2007 the winner's average speed had improved to 90. 87 kilometres per hour (56. 46  mph). [32]à ‚  The  North American Solar Challenge  and the planned  South African Solar Challenge  are comparable competitions that reflect an international interest in the engineering and development of solar powered vehicles. [33][34]Some vehicles use solar panels for auxiliary power, such as for air conditioning, to keep the interior cool, thus reducing fuel consumption. [35][36] In 1975, the first practical solar boat was constructed in England. [37]  By 1995, passenger boats incorporating PV panels began appearing and are now used extensively. [38]  In 1996,  Kenichi Horie  made the first solar powered crossing of the Pacific Ocean, and the  sun21  catamaran made the first solar powered crossing of the Atlantic Ocean in the winter of 2006–2007. [39]  There are plans to circumnavigate the globe in 2010. [40] [pic] Helios UAV  in solar powered flight. In 1974, the unmanned  AstroFlight Sunrise  plane made the first solar flight.On 29 April 1979, the  Sol ar Riser  made the first flight in a solar powered, fully controlled, man carrying flying machine, reaching an altitude of 40 feet (12  m). In 1980, the  Gossamer Penguin  made the first piloted flights powered solely by photovoltaics. This was quickly followed by the  Solar Challenger  which crossed the English Channel in July 1981. In 1990  Eric Scott Raymond  in 21 hops flew from California to North Carolina using solar power. [41]  Developments then turned back to unmanned aerial vehicles (UAV) with the  Pathfinder  (1997) and subsequent designs, culminating in the  Helios  which set the altitude record for a non-rocket-propelled aircraft at 29,524 metres (96,864  ft) in 2001. 42]  The  Zephyr, developed by  BAE Systems, is the latest in a line of record-breaking solar aircraft, making a 54-hour flight in 2007, and month-long flights are envisioned by 2010. [43] A  solar balloon  is a black balloon that is filled with ordinary air. As sunlig ht shines on the balloon, the air inside is heated and expands causing an upward  buoyancy  force, much like an artificially heated  hot air balloon. Some solar balloons are large enough for human flight, but usage is generally limited to the toy market as the surface-area to payload-weight ratio is relatively high. [44] DAYLIGHTING [pic] Daylighting features such as this  oculusat the top of the  Pantheon, in  Rome, Italy have been in use since antiquity.The history of lighting is dominated by the use of natural light. The Romans recognized a  right to light  as early as the  6th century  and English law echoed these judgments with the Prescription Act of 1832. [45][46]  In the 20th century artificial  lighting  became the main source of interior illumination but daylighting techniques and hybrid solar lighting solutions are ways to reduce energy consumption. Daylighting  systems collect and distribute sunlight to provide interior illumination. This pass ive technology directly offsets energy use by replacing artificial lighting, and indirectly offsets non-solar energy use by reducing the need for  air-conditioning. 47]  Although difficult to quantify, the use of  natural lighting  also offers physiological and psychological benefits compared to  artificial lighting. [47]  Daylighting design implies careful selection of window types, sizes and orientation; exterior shading devices may be considered as well. Deciduous trees at the east and west ends of buildings offer shade in the summer and do not block the sun in the winter. [48]  Individual features include sawtooth roofs,  clerestory windows, light shelves,  skylights  and  light tubes. They may be incorporated into existing structures, but are most effective when integrated into a  solar design  package that accounts for factors such as  glare, heat flux and  time-of-use.When daylighting features are properly implemented they can reduce lighting-rel ated energy requirements by 25%. [49] Hybrid solar lighting  (HSL) is an  active solar  method of providing interior illumination. HSL systems collect sunlight using focusing mirrors that  track the Sun  and use  optical fibers  to transmit it inside the building to supplement conventional lighting. In single-story applications these systems are able to transmit 50% of the direct sunlight received. [50] Solar lights that charge during the day and light up at dusk are a common sight along walkways. [51]  Solar-charged lanterns have become popular in developing countries where they provide a safer and cheaper alternative to kerosene lamps. [52]Although  daylight saving time  is promoted as a way to use sunlight to save energy, recent research reports contradictory results: several studies report savings, but just as many suggest no effect or even a net loss, particularly when  gasoline  consumption is taken into account. Electricity use is greatly affected by g eography, climate and economics, making it hard to generalize from single studies. [53] SOLAR THERMAL Solar thermal technologies can be used for water heating, space heating, space cooling and process heat generation. [54] WATER HEATING [pic] Solar water heaters facing the  Sun  to maximize gain. Solar hot water systems use sunlight to heat water.In low geographical latitudes (below 40  degrees) from 60 to 70% of the domestic hot water use with temperatures up to 60  Ã‚ °C can be provided by solar heating systems. [55]  The most common types of solar water heaters are evacuated tube collectors (44%) and glazed flat plate collectors (34%) generally used for domestic hot water; and unglazed plastic collectors (21%) used mainly to heat swimming pools. [56] As of 2007, the total installed capacity of solar hot water systems is approximately 154  GW. [57]  China is the world leader in their deployment with 70  GW installed as of 2006 and a long term goal of 210  GW by 2 020. [58]  Israel  and  Cyprus  are the per capita leaders in the use of solar hot water systems with over 90% of homes using them. 59]  In the United States, Canada and Australia heating swimming pools is the dominant application of solar hot water with an installed capacity of 18  GW as of 2005. [18] HEATING, COOLING AND VENTILATION [pic] Solar House #1 of  Massachusetts Institute of Technology  in the United States, built in 1939, used  Seasonal thermal energy storage (STES)  for year-round heating. In the United States,  heating, ventilation and air conditioning  (HVAC) systems account for 30% (4. 65  EJ) of the energy used in commercial buildings and nearly 50% (10. 1  EJ) of the energy used in residential buildings. [49][60]  Solar heating, cooling and ventilation technologies can be used to offset a portion of this energy.Thermal mass is any material that can be used to store heat—heat from the Sun in the case of solar energy. Common therm al mass materials include stone, cement and water. Historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and radiating stored heat to the cooler atmosphere at night. However they can be used in cold temperate areas to maintain warmth as well. The size and placement of thermal mass depend on several factors such as climate, daylighting and shading conditions. When properly incorporated, thermal mass maintains space temperatures in a comfortable range and reduces the need for auxiliary heating and cooling equipment. [61]A solar chimney (or thermal chimney, in this context) is a passive solar ventilation system composed of a vertical shaft connecting the interior and exterior of a building. As the chimney warms, the air inside is heated causing an  updraft  that pulls air through the building. Performance can be improved by using glazing and thermal mass materials[62]  in a way that mimics green houses. Deciduous  trees and plants have been promoted as a means of controlling solar heating and cooling. When planted on the southern side of a building, their leaves provide shade during the summer, while the bare limbs allow light to pass during the winter. [63]  Since bare, leafless trees shade 1/3 to 1/2 of incident solar radiation, there is a balance between the benefits of summer shading and the corresponding loss of winter heating. 64]  In climates with significant heating loads, deciduous trees should not be planted on the southern side of a building because they will interfere with winter solar availability. They can, however, be used on the east and west sides to provide a degree of summer shading without appreciably affecting winter solar gain. [65] WATER TREATMENT [pic] Solar water disinfection  in  Indonesia [pic] Small scale solar powered sewerage treatment plant. Solar distillation can be used to make  saline  or  brackish water  potable. The firs t recorded instance of this was by 16th century Arab alchemists. [66]  A large-scale solar distillation project was first constructed in 1872 in the  Chilean  mining town of Las Salinas. 67]  The plant, which had solar collection area of 4,700  m2, could produce up to 22,700  L  per day and operated for 40  years. [67]  Individual  still  designs include single-slope, double-slope (or greenhouse type), vertical, conical, inverted absorber, multi-wick, and multiple effect. [66]  These stills can operate in passive, active, or hybrid modes. Double-slope stills are the most economical for decentralized domestic purposes, while active multiple effect units are more suitable for large-scale applications. [66] Solar water  disinfection  (SODIS) involves exposing water-filled plastic  polyethylene terephthalate  (PET) bottles to sunlight for several hours. 68]  Exposure times vary depending on weather and climate from a minimum of six hours to two days dur ing fully overcast conditions. [69]  It is recommended by theWorld Health Organization  as a viable method for household water treatment and safe storage. [70]  Over two million people in developing countries use this method for their daily drinking water. [69] Solar energy may be used in a water stabilisation pond to treat  waste water  without chemicals or electricity. A further environmental advantage is thatalgae  grow in such ponds and consume  carbon dioxide  in photosynthesis, although algae may produce toxic chemicals that make the water unusable. [71][72] COOKING [pic]The Solar Bowl in  Auroville,  India, concentrates sunlight on a movable receiver to produce  steam  for  cooking. Solar cookers use sunlight for cooking, drying and  pasteurization. They can be grouped into three broad categories: box cookers, panel cookers and reflector cookers. [73]  The simplest solar cooker is the box cooker first built by  Horace de Saussure  in 1767. [7 4]  A basic box cooker consists of an insulated container with a transparent lid. It can be used effectively with partially overcast skies and will typically reach temperatures of 90–150  Ã‚ °C. [75]Panel cookers use a reflective panel to direct sunlight onto an insulated container and reach temperatures comparable to box cookers.Reflector cookers use various concentrating geometries (dish, trough, Fresnel mirrors) to focus light on a cooking container. These cookers reach temperatures of 315  Ã‚ °C and above but require direct light to function properly and must be repositioned to track the Sun. [76] The  solar bowl  is a concentrating technology employed by the Solar Kitchen at  Auroville, in  Tamil Nadu,  India, where a stationary spherical reflector focuses light along a line perpendicular to the sphere's interior surface, and a computer control system moves the receiver to intersect this line. Steam is produced in the receiver at temperatures reaching 150   Ã‚ °C and then used for process heat in the kitchen. [77]A reflector developed by  Wolfgang Scheffler  in 1986 is used in many solar kitchens. Scheffler reflectors are flexible parabolic dishes that combine aspects of trough and power tower concentrators. Polar tracking  is used to follow the Sun's daily course and the curvature of the reflector is adjusted for seasonal variations in the incident angle of sunlight. These reflectors can reach temperatures of 450–650  Ã‚ °C and have a fixed focal point, which simplifies cooking. [78]  The world's largest Scheffler reflector system in Abu Road,  Rajasthan, India is capable of cooking up to 35,000 meals a day. [79]As of 2008, over 2,000 large Scheffler cookers had been built worldwide. [80] PROCESS HEATSolar concentrating technologies such as parabolic dish, trough and Scheffler reflectors can provide process heat for commercial and industrial applications. The first commercial system was the  Solar Total Energy Project  (STEP) in Shenandoah, Georgia, USA where a field of 114 parabolic dishes provided 50% of the process heating, air conditioning and electrical requirements for a clothing factory. This grid-connected cogeneration system provided 400  kW of electricity plus thermal energy in the form of 401  kW steam and 468  kW chilled water, and had a one hour peak load thermal storage. [81] Evaporation ponds are shallow pools that concentrate dissolved solids through  evaporation. The use of evaporation ponds to obtain salt from sea water is one of the oldest applications of solar energy.Modern uses include concentrating brine solutions used in leach mining and removing dissolved solids from waste streams. [82] Clothes lines,  clotheshorses, and clothes racks dry clothes through evaporation by wind and sunlight without consuming electricity or gas. In some states of the United States legislation protects the â€Å"right to dry† clothes. [83] Unglazed transpired collecto rs (UTC) are perforated sun-facing walls used for preheating ventilation air. UTCs can raise the incoming air temperature up to 22  Ã‚ °C and deliver outlet temperatures of 45–60  Ã‚ °C. [84]  The short payback period of transpired collectors (3 to 12  years) makes them a more cost-effective alternative than glazed collection systems. 84]  As of 2003, over 80 systems with a combined collector area of 35,000  m2  had been installed worldwide, including an 860  m2  collector in  Costa Rica  used for drying coffee beans and a 1,300  m2  collector in  Coimbatore, India used for drying marigolds. [28] ELECTRICITY PRODUCTION [pic] The  PS10  concentrates sunlight from a field of heliostats on a central tower. Solar power is the conversion of sunlight into  electricity, either directly using  photovoltaics  (PV), or indirectly using  concentrated solar power  (CSP). CSP systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. PV converts light into electric current using the  photoelectric effect. Commercial CSP plants were first developed in the 1980s. Since 1985 the eventually 354 MW  SEGS  CSP installation, in the Mojave Desert of California, is the largest solar power plant in the world.Other large CSP plants include the 150 MW  Solnova Solar Power Station  and the 100 MWAndasol solar power station, both in Spain. The 250 MW  Agua Caliente Solar Project, in the United States, and the 214 MW  Charanka Solar Park  inIndia, are the  world’s largest  photovoltaic plants. Solar projects exceeding 1 GW are being developed, but most of the deployed photovoltaics are in small rooftop arrays of less than 5 kW, which are grid connected using net metering and/or a feed-in tariff. [85] Concentrated solar power Concentrating Solar Power (CSP) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. The concen trated heat is then used as a heat source for a conventional power plant.A wide range of concentrating technologies exists; the most developed are the parabolic trough, the concentrating linear fresnel reflector, the Stirling dish and the solar power tower. Various techniques are used to track the Sun and focus light. In all of these systems a  working fluid  is heated by the concentrated sunlight, and is then used for power generation or energy storage. [86] PHOTOVOLTAICS PHOTOVOLTAICS A solar cell, or photovoltaic cell (PV), is a device that converts light into electric current using the photoelectric effect. The first solar cell was constructed by Charles Fritts in the 1880s. In 1931 a German engineer, Dr Bruno Lange, developed a photo cell using silver selenite in place of copper oxide.Although the prototype selenium cells converted less than 1% of incident light into electricity, both Ernst Werner von Siemens and James Clerk Maxwell recognized the importance of this discove ry. Following the work of Russell Ohl in the 1940s, researchers Gerald Pearson, Calvin Fuller and Daryl Chapin created the silicon solar cell in 1954. These early solar cells cost 286 USD/watt and reached efficiencies of 4. 5–6%. By 2012 available efficiencies exceed 20% and the maximum efficiency of research photovoltaics is over 40%. OTHERS Besides concentrated solar power and photovoltaics, there are some other techniques used to generated electricity using solar power. These include: †¢Dye-sensitized_solar_cells, Luminescent solar concentrators (a type of concentrated photovoltaics or CPV technology), †¢Biohybrid solar cells, †¢Photon Enhanced Thermionic Emission systems. Development, deployment and economics Beginning with the surge in coal use which accompanied the Industrial Revolution, energy consumption has steadily transitioned from wood and biomass to fossil fuels. The early development of solar technologies starting in the 1860s was driven by an exp ectation that coal would soon become scarce. However development of solar technologies stagnated in the early 20th century in the face of the increasing availability, economy, and utility of coal and petroleum. [109]The 1973 oil embargo and 1979 energy crisis caused a reorganization of energy policies around the world and brought renewed attention to developing solar technologies. Deployment strategies focused on incentive programs such as the Federal Photovoltaic Utilization Program in the US and the Sunshine Program in Japan. Other efforts included the formation of research facilities in the US (SERI, now NREL), Japan (NEDO), and Germany (Fraunhofer Institute for Solar Energy Systems ISE). Commercial solar water heaters began appearing in the United States in the 1890s. These systems saw increasing use until the 1920s but were gradually replaced by cheaper and more reliable heating fuels.As with photovoltaics, solar water heating attracted renewed attention as a result of the oil crises in the 1970s but interest subsided in the 1980s due to falling petroleum prices. Development in the solar water heating sector progressed steadily throughout the 1990s and growth rates have averaged 20% per year since 1999. [57] Although generally underestimated, solar water heating and cooling is by far the most widely deployed solar technology with an estimated capacity of 154 GW as of 2007. The International Energy Agency has said that solar energy can make considerable contributions to solving some of the most urgent problems the world now faces: The development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits.It will increase countries’ energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating climate change, and keep fossil fuel prices lower than otherwise. These advantages are global. Hence the additional costs of the incentives for early deployment should be considered learning investments; they must be wisely spent and need to be widely shared. In 2011, the International Energy Agency said that solar energy technologies such as photovoltaic panels, solar water heaters and power stations built with mirrors could provide a third of the world’s energy by 2060 if politicians commit to limiting climate change. The energy from the sun could play a key role in de-carbonizing the global economy alongside improvements in energy efficiency and imposing costs on greenhouse gas emitters. The strength of solar is the incredible variety and flexibility of applications, from small scale to big scale†. We have proved †¦ that after our stores of oil and coal are exhausted the human race can receive unlimited power from the rays of the sun. —Frank Shuman, New York Times, July 2, 1916 SOLAR CELL SOLAR CELL A solar cell made from amonocrystalline silicon wafer Sola r cells can be used devices such as this portable monocrystalline solar charger. A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristics—e. g. urrent, voltage, or resistance—vary when light is incident upon it) which, when exposed to light, can generate and support an electric current without being attached to any external voltage source. The term â€Å"photovoltaic† comes from the Greek (phos) meaning â€Å"light†, and from â€Å"Volt†, the unit of electro-motive force, the volt, which in turn comes from the last name of the Italian physicist Alessandro Volta, inventor of the battery (electrochemical cell). The term â€Å"photo-voltaic† has been in use in English since 1849. Photovoltaics is the field of technology and research related to the practical application of photovoltaic cells in producing electricity from light, though it is often used specifically to refer to the generation of electricity from sunlight.Cells can be described as photovoltaic even when the light source is not necessarily sunlight (lamplight, artificial light, etc. ). In such cases the cell is sometimes used as a photodetector (for example infrared detectors), detecting light or other electromagnetic radiationnear the visible range, or measuring light intensity. The operation of a photovoltaic (PV) cell requires 3 basic attributes: 1. The absorption of light, generating either electron-hole pairs or excitons. 2. The separation of charge carriers of opposite types. 3. The separate extraction of those carriers to an external circuit. In contrast, a solar thermal collector collects heat by absorbing sunlight, for the purpose of either direct heating or indirect electrical power generation. Photoelectrolytic cell† (photoelectrochemical cell), on the other hand, refe rs either a type of photovoltaic cell (like that developed by A. E. Becquerel and modern dye-sensitized solar cells) or a device that splits water directly into hydrogen and oxygen using only solar illumination. FURTHER IMPROVEMENTS In the time since Berman's work, improvements have brought production costs down under $1 a watt, with wholesale costs well under $2. â€Å"Balance of system† costs are now more than the panels themselves. Large commercial arrays can be built at below $3. 40 a watt,[12][13]  fully commissioned. As the semiconductor industry moved to ever-larger boules, older equipment became available at fire-sale prices.Cells have grown in size as older equipment became available on the surplus market; ARCO Solar's original panels used cells with 2 to 4  inch (51 to 100  mm) diameter. Panels in the 1990s and early 2000s generally used 5  inch (125  mm) wafers, and since 2008 almost all new panels use 6  inch (150  mm) cells. This material has less e fficiency, but is less expensive to produce in bulk. The widespread introduction of  flat screen televisions  in the late 1990s and early 2000s led to the wide availability of large sheets of high-quality glass, used on the front of the panels. In terms of the cells themselves, there has been only one major change. During the 1990s, polysilicon cells became increasingly popular.These cells offer less efficiency than their monosilicon counterparts, but they are grown in large vats that greatly reduce the cost of production. By the mid-2000s, poly was dominant in the low-cost panel market, but more recently a variety of factors has pushed the higher performance mono back into widespread use. CURRENT EVENTS Other technologies have tried to enter the market. First Solar  was briefly the largest panel manufacturer in 2009, in terms of yearly power produced, using a thin-film cell sandwiched between two layers of glass. Since then silicon panels reasserted their dominant position bo th in terms of lower prices and the rapid rise of Chinese manufacturing, resulting in the top producers being Chinese.By late 2011, efficient production in China, coupled with a drop in European demand due to budgetary turmoil had dropped prices for crystalline solar-based modules further, to about $1. 09[13]  per watt in October 2011, down sharply from the price per watt in 2010. A more modern process, mono-like-multi, aims to offer the performance of mono at the cost of poly, and is in the process of being introduced in 2012[citation needed]. APPLICATIONS [pic] Polycrystalline  photovoltaic cells laminated to backing material in a module [pic] [pic] Polycrystalline photovoltaic cells Solar cells are often electrically connected and encapsulated as a  module. Photovoltaic modules often have a sheet of glass on the front (sun up) side, allowing light to pass while protecting the emiconductor  wafers  from abrasion and impact due to wind-driven debris,  rain,  hail, etc . Solar cells are also usually connected in  series  in modules, creating an additive  voltage. Connecting cells in parallel will yield a higher current; however, very significant problems exist with parallel connections. For example, shadow effects can shut down the weaker (less illuminated) parallel string (a number of series connected cells) causing substantial power loss and even damaging the weaker string because of the excessive  reverse bias  applied to the shadowed cells by their illuminated partners. Strings of series cells are usually handled independently and not connected in parallel, special paralleling circuits are the exceptions.Although modules can be interconnected to create an  array  with the desired peak DC voltage and loading current capacity, using independent MPPTs (maximum power point trackers) provides a better solution. In the absence of paralleling circuits, shunt diodes can be used to reduce the power loss due to shadowing in arrays with ser ies/parallel connected cells. To make practical use of the solar-generated energy, the electricity is most often fed into the electricity grid using inverters (grid-connected  photovoltaic systems); in stand-alone systems, batteries are used to store the energy that is not needed immediately. Solar panels can be used to power or recharge portable devices. THEORYThe solar cell works in three steps: 1. Photons  in  sunlight  hit the solar panel and are absorbed by semiconducting materials, such as silicon. 2. Electrons  (negatively charged) are knocked loose from their atoms, causing an electric potential difference. Current starts flowing through the material to cancel the potential and this electricity is captured. Due to the special composition of solar cells, the electrons are only allowed to move in a single direction. 3. An array of solar cells converts solar energy into a usable amount of  direct current  (DC) electricity. EFFICIENCY Solar panels on the Internatio nal Space Station absorb light from both sides.These Bifacial cells are more efficient and operate at lower temperature than single sided equivalents. The efficiency of a solar cell may be broken down into reflectance efficiency, thermodynamic efficiency, charge carrier separation efficiency and conductive efficiency. The overall efficiency is the product of each of these individual efficiencies. A solar cell usually has a voltage dependent efficiency curve, temperature coefficients, and shadow angles. Due to the difficulty in measuring these parameters directly, other parameters are measured instead: thermodynamic efficiency, quantum efficiency,integrated quantum efficiency, VOC ratio, and fill factor.Reflectance losses are a portion of the quantum efficiency under â€Å"external quantum efficiency†. Recombination losses make up a portion of the quantum efficiency, VOC ratio, and fill factor. Resistive losses are predominantly categorized under fill factor, but also make up minor portions of the quantum efficiency, VOC ratio. The fill factor is defined as the ratio of the actual maximum obtainable power to the product of the open circuit voltage and short circuit current. This is a key parameter in evaluating the performance of solar cells. Typical commercial solar cells have a fill factor ; 0. 70. Grade B cells have a fill factor usually between 0. 4 to 0. 7. 14] Cells with a high fill factor have a low equivalent series resistance and a high equivalent shunt resistance, so less of the current produced by the cell is dissipated in internal losses. Single p–n junction crystalline silicon devices are now approaching the theoretical limiting power efficiency of 33. 7%, noted as the Shockley–Queisser limit in 1961. In the extreme, with an infinite number of layers, the corresponding limit is 86% using concentrated sunlight. [pic] Reported timeline of solar cell energy conversion efficiencies (from National Renewable Energy Laboratory (USA)) MATERIALS [pic] [pic] The  Shockley-Queisser limit  for the theoretical maximum efficiency of a solar cell. Semiconductors with  band gapbetween 1 and 1. eV, or near-infrared light, have the greatest potential to form an efficient cell. (The efficiency â€Å"limit† shown here can be exceeded by  multijunction solar cells. ) Various materials display varying efficiencies and have varying costs. Materials for efficient solar cells must have characteristics matched to the spectrum of available light. Some cells are designed to efficiently convert wavelengths of solar light that reach the Earth surface. However, some solar cells are optimized for light absorption beyond Earth's atmosphere as well. Light absorbing materials can often be used in  multiple physical configurations  to take advantage of different light absorption and charge separation mechanisms.Materials presently used for photovoltaic solar cells include  monocrystalline silicon,  polycrystalline sil icon,  amorphous silicon,  cadmium telluride, andcopper indium selenide/sulfide. [25][26] Many currently available solar cells are made from bulk materials that are cut into  wafers  between 180 to 240  micrometers thick that are then processed like other semiconductors. Other materials are made as  thin-films  layers, organic  dyes, and organic  polymers  that are deposited on  supporting substrates. A third group are made from  nanocrystals  and used as  quantum dots  (electron-confined  nanoparticles). Silicon remains the only material that is well-researched in both  bulkand  thin-film  forms. CRYSTALLINE SILICON [pic]Basic structure of a silicon based solar cell and its working mechanism. By far, the most prevalent bulk material for solar cells is crystalline silicon (abbreviated as a group as c-Si), also known as â€Å"solar grade silicon†. Bulk silicon is separated into multiple categories according to crystallinity and crystal siz e in the resulting ingot, ribbon, orwafer. 1. monocrystalline silicon (c-Si): often made using the Czochralski process. Single-crystal wafer cells tend to be expensive, and because they are cut from cylindrical ingots, do not completely cover a square solar cell module without a substantial waste of refined silicon. Hence most c-Si panels have uncovered gaps at the four corners of the cells. 2. olycrystalline silicon, or multicrystalline silicon, (poly-Si or mc-Si): made from cast square ingots — large blocks of molten silicon carefully cooled and solidified. Poly-Si cells are less expensive to produce than single crystal silicon cells, but are less efficient. United States Department of Energy data show that there were a higher number of polycrystalline sales than monocrystalline silicon sales. 3. ribbon silicon is a type of polycrystalline silicon: it is formed by drawing flat thin films from molten silicon and results in a polycrystalline structure. These cells have lower efficiencies than poly-Si, but save on production costs due to a great reduction in silicon waste, as this approach does not require sawing from ingots. 4. ono-like-multi silicon: Developed in the 2000s and introduced commercially around 2009, mono-like-multi, or cast-mono, uses existing polycrystalline casting chambers with small â€Å"seeds† of mono material. The result is a bulk mono-like material with poly around the outsides. When sawn apart for processing, the inner sections are high-efficiency mono-like cells (but square instead of â€Å"clipped†), while the outer edges are sold off as conventional poly. The result is line that produces mono-like cells at poly-like prices. Analysts have predicted that prices of polycrystalline silicon will drop as companies build additional polysilicon capacity quicker than the industry's projected demand. On the other hand, the cost of producing upgraded metallurgical-grade silicon, also known as UMG Si, can potentially be one- sixth that of makingpolysilicon.Manufacturers of wafer-based cells have responded to high silicon prices in 2004–2008 prices with rapid reductions in silicon consumption. According to Jef Poortmans, director of IMEC's organic and solar department, current cells use between eight and nine grams of silicon per watt of power generation, with wafer thicknesses in the neighborhood of 0. 200 mm. At 2008 spring's IEEEPhotovoltaic Specialists' Conference (PVS'08), John Wohlgemuth, staff scientist at BP Solar, reported that his company has qualified modules based on 0. 180 mm thick wafers and is testing processes for 0. 16 mm wafers cut with 0. 1 mm wire. IMEC's road map, presented at the organization's recent annual research review meeting, envisions use of 0. 08 mm wafers by 2015. Gallium arsenide multijunction:High-efficiency multijunction cells were originally developed for special applications such as satellites and space exploration, but at present, their use in terrestrial conc entrators might be the lowest cost alternative in terms of $/kWh and $/W. [35] These multijunction cells consist of multiple thin films produced using metalorganic vapour phase epitaxy. A triple-junction cell, for example, may consist of the semiconductors: GaAs, Ge, and GaInP2. [36] Each type of semiconductor will have a characteristic band gap energy which, loosely speaking, causes it to absorb light most efficiently at a certain color, or more precisely, to absorb electromagnetic radiation over a portion of the spectrum.Combinations of semiconductors are carefully chosen to absorb nearly the entire solar spectrum, thus generating electricity from as much of the solar energy as possible. GaAs based multijunction devices are the most efficient solar cells to date. In October 15, 2012, triple junction metamorphic cell reached a record high of 44%. [37] Tandem solar cells based on monolithic, series connected, gallium indium phosphide (GaInP), gallium arsenide GaAs, and germanium Ge p–n junctions, are seeing demand rapidly rise. Between December 2006 and December 2007, the cost of 4N gallium metal rose from about $350 per kg to $680 per kg. Additionally, germanium metal prices have risen substantially to $1000–1200 per kg this year.Those materials include gallium (4N, 6N and 7N Ga), arsenic (4N, 6N and 7N) and germanium, pyrolitic boron nitride (pBN) crucibles for growing crystals, and boron oxide, these products are critical to the entire substrate manufacturing industry. Triple-junction GaAs solar cells were also being used as the power source of the Dutch four-time World Solar Challenge winners Nuna in 2003, 2005 and 2007, and also by the Dutch solar carsSolutra (2005), Twente One (2007) and 21Revolution (2009). The Dutch Radboud University Nijmegen set the record for thin film solar cell efficiency using a single junction GaAs to 25. 8% in August 2008 using only 4  µm thick GaAs layer which can be transferred from a wafer base to glass or pl astic film. THIN FILMS [pic]Market share of the different PV technologies  In 2010 the market share of thin film declined by 30% as thin film technology was displaced by more efficient crystalline silicon solar panels (the light and dark blue bars). Thin-film technologies reduce the amount of material required in creating the active material of solar cell. Most thin film solar cells are sandwiched between two panes of glass to make a module. Since silicon solar panels only use one pane of glass, thin film panels are approximately twice as heavy as crystalline silicon panels. The majority of film panels have significantly lower conversion efficiencies, lagging silicon by two to three percentage points. 31]  Thin-film solar technologies have enjoyed large investment due to the success of First Solar and the largely unfulfilled promise of lower cost and flexibility compared to wafer silicon cells, but they have not become mainstream solar products due to their lower efficiency and corresponding larger area consumption per watt production. Cadmium telluride  (CdTe),  copper indium gallium selenide  (CIGS) and  amorphous silicon  (A-Si) are three thin-film technologies often used as outdoor photovoltaic solar power production. CdTe technology is most cost competitive among them. [32]  CdTe technology costs about 30% less than CIGS technology and 40% less than A-Si technology in 2011. CADMIUM TELLURIDE SOLAR CELLA cadmium telluride solar cell uses a cadmium telluride (CdTe) thin film, a  semiconductor  layer to absorb and convert sunlight into electricity. Solarbuzzhas reported that the lowest quoted thin-film module price stands at US$0. 84 per  watt-peak, with the lowest crystalline silicon (c-Si) module at $1. 06 per watt-peak. [33] The  cadmium  present in the cells would be toxic if released. However, release is impossible during normal operation of the cells and is unlikely during ? res in residential roofs. [34]  A square meter of CdTe contains approximately the same amount of Cd as a single C cell  Nickel-cadmium battery, in a more stable and less soluble form. [34]COPPER INDIUM GALLIUM SELENIDE Copper indium gallium selenide (CIGS) is a  direct band gap  material. It has the highest efficiency (~20%) among thin film materials (see  CIGS solar cell). Traditional methods of fabrication involve vacuum processes including co-evaporation and sputtering. Recent developments at  IBM  and  Nanosolar  attempt to lower the cost by using non-vacuum solution processes. GALLIUM ARSENIDE MULTIJUNCTION High-efficiency multijunction cells were originally developed for special applications such as  satellites  and  space exploration, but at present, their use in terrestrial concentrators might be the lowest cost alternative in terms of $/kWh and $/W. 35]  These multijunction cells consist of multiple thin films produced using  metalorganic vapour phase epitaxy. A triple-junction cell, for example, may consist of the semiconductors:  GaAs,  Ge, and  GaInP2. [36]  Each type of semiconductor will have a characteristic  band gap  energy which, loosely speaking, causes it to absorb light most efficiently at a certain color, or more precisely, to absorb  electromagnetic radiation  over a portion of the spectrum. Combinations of semiconductors are carefully chosen to absorb nearly all of the solar spectrum, thus generating electricity from as much of the solar energy as possible. GaAs based multijunction devices are the most efficient solar cells to date.In October 15, 2012, triple junction metamorphic cell reached a record high of 44%. [37] Tandem solar cells based on monolithic, series connected, gallium indium phosphide (GaInP), gallium arsenide GaAs, and germanium Ge p–n junctions, are seeing demand rapidly rise. Between December 2006 and December 2007, the cost of 4N gallium metal rose from about $350 per kg to $680 per kg. Additionally, germanium metal p rices have risen substantially to $1000–1200 per kg this year. Those materials include gallium (4N, 6N and 7N Ga), arsenic (4N, 6N and 7N) and germanium, pyrolitic boron nitride (pBN) crucibles for growing crystals, and boron oxide, these products are critical to the entire substrate manufacturing industry.Triple-junction GaAs solar cells were also being used as the power source of the Dutch four-time  World Solar Challenge  winners  Nuna  in 2003, 2005 and 2007, and also by the Dutch solar carsSolutra (2005),  Twente One (2007)  and 21Revolution (2009). The Dutch  Radboud University Nijmegen  set the record for thin film solar cell efficiency using a single junction GaAs to 25. 8% in August 2008 using only 4  Ã‚ µm thick GaAs layer which can be transferred from a wafer base to glass or plastic film. Light-absorbing dyes (DSSC) Dye-sensitized solar cells  (DSSCs) are made of low-cost materials and do not need elaborate equipment to manufacture, so they can be made in a  DIY  fashion, possibly allowing players to produce more of this type of solar cell than others. In bulk it should be significantly less expensive than older  solid-state  cell designs.DSSC's can be engineered into flexible sheets, and although its  conversion efficiency  is less than the best  thin film cells, its  price/performance ratio  should be high enough to allow them to compete with  fossil fuel electrical generation. Typically a  ruthenium  metalorganic  dye  (Ru-centered) is used as a  monolayer  of light-absorbing material. The dye-sensitized solar cell depends on a  mesoporous  layer of  nanoparticulate  titanium dioxide  to greatly amplify the surface area (200–300 m2/g TiO2, as compared to approximately 10 m2/g of flat single crystal). The photogenerated electrons from the  light absorbing dye  are passed on to the  n-type  TiO2, and the holes are absorbed by an  electrolyte  on the other side of the dye.The circuit is completed by a redox couple in the electrolyte, which can be liquid or solid. This type of cell allows a more flexible use of materials, and is typically manufactured by  screen printing  or use of  Ultrasonic Nozzles, with the potential for lower processing costs than those used for  bulk  solar cells. However, the dyes in these cells also suffer from  degradation  under heat and  UV  light, and the cell casing is difficult to  seal  due to the solvents used in assembly. In spite of the above, this is a popular emerging technology with some commercial impact forecast within this decade. The first commercial shipment of DSSC solar modules occurred in July 2009 from G24i Innovations. [38] Quantum Dot Solar Cells (QDSCs)Quantum dot solar cells  (QDSCs) are based on the Gratzel cell, or  dye-sensitized solar cell, architecture but employ low  band gap  semiconductor  nanoparticles, fabricated with such small crystallite sizes th at they form  quantum dots  (such as  CdS,  CdSe,  Sb2S3,  PbS, etc. ), instead of organic or organometallic dyes as light absorbers. Quantum dots (QDs) have attracted much interest because of their unique properties. Their size quantization allows for the  band gap  to be tuned by simply changing particle size. They also have high  extinction coefficients, and have shown the possibility of  multiple exciton generation. [39] In a QDSC, a  mesoporous  layer of  titanium dioxide  nanoparticles forms the backbone of the cell, much like in a DSSC.This TiO2  layer can then be made photoactive by coating with semiconductor quantum dots using  chemical bath deposition,  electrophoretic deposition, or successive ionic layer adsorption and reaction. The electrical circuit is then completed through the use of a liquid or solid  redox couple. During the last 3–4 years, the efficiency of QDSCs has increased rapidly[40]  with efficiencies over 5% show n for both liquid-junction[41]  and solid state cells. [42]  In an effort to decrease production costs of these devices, the  Prashant Kamat  research group[43]  recently demonstrated a solar paint made with TiO2  and CdSe that can be applied using a one-step method to any conductive surface and have shown efficiencies over 1%. [44] Organic/polymer solar cellsOrganic solar cells  are a relatively novel technology, yet hold the promise of a substantial price reduction (over thin-film silicon) and a faster return on investment. These cells can be processed from solution, hence the possibility of a simple roll-to-roll printing process, leading to inexpensive, large scale production. Organic solar cells and  polymer solar cells  are built from thin films (typically 100  nm) of  organic semiconductors  including polymers, such as  polyphenylene vinylene  and small-molecule compounds like copper phthalocyanine (a blue or green organic pigment) and  carbon ful lerenes  and fullerene derivatives such as  PCBM. Energy conversion efficiencies achieved to date using conductive polymers are low compared to inorganic materials.However, it has improved quickly in the last few years and the highest  NREL  (National Renewable Energy Laboratory) certified efficiency has reached 8. 3% for the  Konarka  Power Plastic. [45]  In addition, these cells could be beneficial for some applications where mechanical flexibility and disposability are important. These devices differ from inorganic semiconductor solar cells in that they do not rely on the large built-in electric field of a PN junction to separate the electrons and holes created when photons are absorbed. The active region of an organic device consists of two materials, one which acts as an electron donor and the other as an acceptor.When a photon is converted into an electron hole pair, typically in the donor material, the charges tend to remain bound in the form of an  exciton, a nd are separated when the exciton diffuses to the donor-acceptor interface. The short exciton diffusion lengths of most polymer systems tend to limit the efficiency of such devices. Nanostructured interfaces, sometimes in the form of bulk heterojunctions, can improve performance. [46] In 2011, researchers at the Massachusetts Institute of Technology and Michigan State University developed the first highly efficient transparent solar cells that had a power efficiency close to 2% with a transparency to the human eye greater than 65%, achieved by selectively absorbing the ultraviolet and near-infrared parts of the spectrum with small-molecule compounds. 47]  [48]Researchers at UCLA more recently developed an analogous polymer solar cell, following the same approach, that is 70% transparent and has a 4% power conversion efficiency. [49]  The efficiency limits of both opaque and transparent organic solar cells were recently outlined. [50]  [51]  These lightweight, flexible cells can be produced in bulk at a low cost, and could be used to create power generating windows. Silicon thin films Silicon thin-film cells  are mainly deposited by  chemical vapor deposition  (typically plasma-enhanced, PE-CVD) from  silane  gas and  hydrogen  gas. Depending on the deposition parameters, this can yield:[52] 1. Amorphous silicon  (a-Si or a-Si:H) 2. Protocrystalline  silicon or 3. Nanocrystalline silicon  (nc-Si or nc-Si:H), also called microcrystalline silicon.It has been found that protocrystalline silicon with a low volume fraction of nanocrystalline silicon is optimal for high open circuit voltage. [53]  These types of silicon present dangling and twisted bonds, which results in deep defects (energy levels in the bandgap) as well as deformation of the valence and conduction bands (band tails). The solar cells made from these materials tend to have lower  energy conversion efficiency  than  bulk  silicon, but are also less expensive to p roduce. The  quantum efficiency  of thin film solar cells is also lower due to reduced number of collected charge carriers per incident photon. An amorphous silicon (a-Si) solar cell is made of amorphous or microcrystalline silicon and its basic electronic structure is the  p-i-n  junction. -Si is attractive as a solar cell material because it is abundant and non-toxic (unlike its CdTe counterpart) and requires a low processing temperature, enabling production of devices to occur on flexible and low-cost substrates. As the amorphous structure has a higher absorption rate of light than crystalline cells, the complete light spectrum can be absorbed with a very thin layer of photo-electrically active material. A film only 1 micron thick can absorb 90% of the usable solar energy. [54]  This reduced material requirement along with current technologies being capable of large-area deposition of a-Si, the scalability of this type of cell is high.However, because it is amorphous, i t has high inherent disorder and dangling bonds, making it a bad conductor for charge carriers. These dangling bonds act as recombination centers that severely reduce the carrier lifetime and pin the Fermi energy level so that doping the material to n- or p- type is not possible. Amorphous Silicon also suffers from the Staebler-Wronski effect, which results in the efficiency of devices utilizing amorphous silicon dropping as the cell is exposed to light. The production of a-Si thin film solar cells uses glass as a substrate and deposits a very thin layer of silicon by  plasma-enhanced chemical vapor deposition  (PECVD).A-Si manufacturers are working towards lower costs per watt and higher conversion efficiency with continuous research and development on  Multijunction solar cells  for solar panels. Anwell Technologies Limited  recently announced its target for mul