Light Trapping Properties of Solar Cells

Light Trapping Properties of Solar Cells Abstract In this paper, we have investigated the light trapping properties of solar cells based on one-dimensional photonic crystal (1DPC) by using finite difference time domain (FDTD) method. Light trapping is essential for thin film solar cells due to the limited absorption in long wavelength range. Here, we used different types of solar cell structures and to explore their photonic ray theories (electric field propagation) and numerical simulations. The one-dimensional thin film solar cell consists of distributed Bragg’s reflector (DBR), Metal back reflector, grating and anti-reflection coating (ARC). The influence of the grating period and depth, the optimal path length has to be increased. These numerical simulations indicate that this combined photonic structure is capable of improving the external quantum efficiency and their absorption. As well as the relative enhancement increased up-to 60% for thin film silicon solar cells. We further to investigate high efficiency of thin fi lm solar cell using different structure. Index terms: Finite difference time domain (FDTD), distributed Bragg’s reflector (DBR), the grating, metal reflector, anti-reflection coating (ARC) and relative enhancement factor. Introduction The scientific community is intensively working to achieve high efficiency thin film solar cells based on silicon. Among the various energy sources, solar energy is well considered to be very promising and achieved wide applications for space and global power generation. The silicon based thin films are cheaper and easy fabrication due to well developed silicon technology. The Silicon based thin films have been the choice as active materials for solar cells, such as crystalline silicon (c-Si), amorphous silicon (a-Si), micro crystalline silicon (ÃŽ ¼c-Si) and so on [1]. The efficiency of silicon thin film solar cell (TFSC) is low due to their weak absorption in longer wavelength range. Thus the light trapping mechanism for thin film silicon solar cell becomes a vital role to improve the conversion efficiency. The crystalline silicon solar cells integrated with the DBR, metal reflector, ARC and grating. Therefore, the incident light is expected to be partially absorbed in the active l ayer of crystalline silicon (c-Si), after the support through the front anti-reflection coating layer (Si3N4) and the back reflector of aluminum (Al) or dielectric (DBR) layers. We are realized that incident light is scattered into the DBR due to the periodic grating and reflected back at the bottom interface. Therefore the way of light trapping in this design is different from usual reflectors based on metals or photonic crystals [2, 3]. In this paper, we will focus on strongly corrugated photonic crystal absorbers made up of a-Si and SiO2 layers are periodically patterned. Finally, the optical presentation of the structure will be indicated by their integrated absorption, the absorbed spectral range between 300-1200nm. This paper deals with the modeling and designing of solar cells using FDTD method. Figure 1 The schematic diagram of the solar cell structure Designing Approach Finite difference time domain (FDTD) method as a sophisticated computational method used to model advanced devices. Figure 1 shows a schematic diagram of solar cell composed of anti-reflection coating (ARC), diffraction grating and photonic crystals also known as distributed Bragg’s reflector. The distributed Bragg’s reflector (DBR) consists of alternate layers of amorphous Si (a-Si) and silicon-di-oxide (SiO2) with their refractive index 3.6 and 1.45 and thickness 56nm, 138nm respectively. The thickness of the each layer is determined by the quarter wave principle (t = ÃŽ »C /4n), where, n-is the refractive index and ÃŽ »C is the center wavelength of photonic band gap. On top of the DBR, diffraction grating is embedded which is made of a-Si and SiO2, with duty cycle (Gdc=0.5ÃŽ ¼m), period (Gp=0.6ÃŽ ¼m) and thickness (Tg=0.1ÃŽ ¼m).The anti-reflection coating (ARC) layer is made of silicon nitrate (Si3N4) and their thickness 0.07ÃŽ ¼m. Result and Discussion The wave propagation designed solar cell is shown in figure 2. We have used commercial available Full WAVE tool supplied by RSoft. We can see light interaction into the device, when one light is made incident on the solar cell. The shorter wavelength is absorbed by the active region while longer wavelength moves toward bottom layer. The grating interaction gives scattering and diffraction of light where as DBR reflects remaining light. This mechanism finally force the light waves into active region. We have designed and analyzed four different structures of solar cells to understand the light trapping mechanism. Figure 2 Schematic diagrams of solar cell structure and their electric field distribution Figure 3 (a) show absorption of solar cells in accordance to wavelength from 300 to 1200nm. To compare the performance of designed devices we have designed a planer solar cell which mainly consists of anti-reflection coating of silicon nitride. The solar cell absorption of DBR and ARC based solar cell is found to be improved than reference solar cell. However, DBR, ARC and GRA based solar cells show distinct absorption as comparisons to cell C1 and C3. We can see added absorption peak in the red and infrared part of solar spectrum for the case of cell 2. Figure 3 Absorption (a) and Quantum efficiency (b) of designed four solar cells Figure 3b shows Quantum efficiency of different types of thin film Silicon solar cells. The solar cell (C2) composed of DBR, ARC and GR Solar cell C2 shows enhanced quantum efficiency then solar cells C1 and C3. The solar cell C2 peaks between 600 and 1160nm range, which indicates the efficient trapping of light. However, reference cell has the less quantum efficiency show sharp as compare to cells C1 and C3. The overall quantum efficiency is found to be increased between the 700 to 1160nm wavelength range. The quantum efficiency clearly exposes the light absorption enhancement of the light trapping structure in certain wavelength range only. The different solar cell structure shows the highest performances and their relative efficiency was achieved up to 60%, it is compared to the reference cell. Figure 4 J-V characteristics for solar cells with different back structures The figure 4 shows the short circuit current versus voltage characteristics of four designed solar cells. The highest short circuit current can be absorbed for cell C2, C3 and C1 respectively. The short circuit current enhancement factors are 21mA/cm2, 53.8mA/cm2 and 60.5mA/cm2. The overall short circuit current of DBR with grating structure got more enhancements (~60%). Table-I shows the short circuit current, open circuit Voltage, relative enhancement factor and cell efficiency of different solar cell structures. Table-1 The comparison of optical characteristics of C-Si solar cell with different back structures with reference structure All the back structures are improved the cell efficiencies as shown in table I. The open circuit voltage (VOC= 0.7V) and the fill factor (FF=84.5%) are similar to all the structures. The back reflectors showing significant enhancement as evidenced by figure 3. Figure 5 The efficiency enhancement of c-Si solar cells with different structures The characteristic of different back reflector with active region and their enhanced efficiency as shown in figure 5. The combination of periodic grating and DBR structure indicates 60% enhancement, while aluminum with grating structure indicates 53.4% enhancement, it is compared to bare silicon or without any reflector on the back surface. It is simulated as a compare to the perfect periodic cell structure. Conclusion In conclusion, we proposed new photonic light trapping structure and the numerical simulations indicate that this combined photonic structure is capable of improving the cell efficiency by more than 55% for thin film silicon solar cell structure. We investigated the mechanism for an efficient light trapping structure for thin film solar cells using FDTD method. At wavelength range between 400 to 1200nm, we got stronger absorption peaks for silicon with metal and grating. The efficiency also increased, it is much more considerable. These results are providing a path to achieve low cost and strong efficiency enhancement for thin film silicon solar cell. Integrated of self assembled alumina and DBR for more light trapping in silicon photo voltaic (PV) devices. The high efficiency solar cell will be greatly more evident for smaller cell thickness and improved their absorption. Further, we will get more cell efficiency using metal nano sphere and texture the grating structure. Reference [1] L.Zhao, Y.H.Zuo, C.L.Zhou, H.L.Li, H.W. Diao and W.J.Wang, A highly efficient light trapping structure for thin film silicon solar cells, Solar energy 84 (2010) 110-115. [2] Krc. J, Zeman, M, Luxembourg, SL Topic, M.Modulated photonic-crystal structures as broad band back reflectors in thin-film solar cells.Applied Physics Letters, (2009), 94(15), 153501-153501-3. [3] Lord RayleighSec. R. S. On the maintenance of vibrations by forces of double frequency, and on the propagation of waves through a medium endowed with a periodic structure, Vol. 24, issue 147, (1887), 145-159. [4] A. Taflove, S.C. Hagness, Computational Electrodynamics, 2nd ed., Artech House, Norwood, MA, 2000. [5] A.F. Oskooi, D.Roundy, M. Ibanescu, P.Bermel, J. D. Joannpoulos, S.G. Johnson, Computer Physics Communications 181 (2010) 687. [6] Xing sheng, steven G. Johnson, Lirong Z. Broderick, Jurgen Michel and Lionel C. Kimerling, Integrated photonic structures for light trapping in thin film Si solar cells, Applied Physics Letters 100 (2012), 111110. [7] L.Zeng, Y.Yi, C.Hong, J.Liu, N.Feng, X.Duan and L.C. Kimerling, Efficiency enhancement in Si solar cells by textured photonic crystal back reflector, Applied Physics Letters 89 (2006), 111111.

Life Of A Teenager Essay

WE TEENS are something our life depends on cell phones, television and lot more. We are more bothered about our fashion and outlook. Our friends play the most important role in our life.A teenager, or teen, is a young person whose age falls within the range from thirteen  through nineteen (13–19). They are called teenagers because their age number ends in â€Å"teen†. Someone aged 18 or 19 is also considered a young adult. Timing of puberty On average, girls begin puberty at ages 10–11; boys at ages 11–12. Girls usually complete puberty by ages 15–17,[2][3][4] while boys usually complete puberty by ages 16-17. The major landmark of puberty for females is menarche, the onset of menstruation, which occurs on average between ages 12–13; for males, it is the first ejaculation, which occurs on average at age 13. In the 21st century, the average age at which children, especially girls, reach puberty is lower compared to the 19th century, when it was 15 for girls and 16 for boys.This can be due to improved nutrition resulting in rapid body growth, increased weight and fat deposition, or eating meat from animals which have been dosed up with oestrogen. â€Å"I memorize the phone numbers of friends whom my parents do not approve of so that their names don’t blink on my mobile phone.† Nothing Like a Friend >> I sometimes fight with my friends, but there’s mutual understanding that we won’t let our parents know. And, usually, we sort out the differences ourselves. >> Some of us get stuck with friends from whom we learn to smoke, drink, splurge, and other vices. For a while, I got entangled with a group of boys and became addicted to video games. >> When I want to attend a party or watch a film, I invent a story, like I am  going to study at a friend’s place. >> Last year one of my classmates was moving to another city. On his last day at school, I gave him `100 so that he could buy himself a present. It was the money my mother gave me to buy a sweater.

Crime and Punishment: Suspense

Suspense begins in Roskolnikov’s thoughts There are times where we find ourselves living in suspense, feeling insecure about what possibly can occur next. So many things that surround us, at times, foreshadow what may happen next. When this happens, we crave to know what is the next event that will arrive. In the book of Crime and Punishment, there are many parts in which the story becomes suspenseful. Well, how does Dostoyevsky achieve and sustain the suspense in his novel? It all starts right when we find out that Roskolnikov creates feelings of hatred towards Alyona Ivanovna, and creates some sort of plan to kill her. Even though in his thoughts laid the plan, he wasn't completely convinced by his own being in actually completing with a crime. But once he was at the bar, where he overheard a conversation about Ivanovna and how she were better off dead, he decided that it was best that he were to do their request. This is before the suspense comes into play. Overhearing the conversations about Alyona Ivanovna persuaded Rokolnikov that it was his destiny to murder her. The more he thought about it, the more he liked the idea. This is where we can see a bit of suspense growing, because as a reader, what can we expect from a man who has never committed a crime such as killing? While Roskolnikov was a bit insecure about his decision in doing murder, he planned to use an ax to murder Alyona Ivanovna. He got his ax, and went his way to her door, waiting the moment where he can take action. It's possible to imagine that in this moment, Roskolnikov probably tensed up in his body, possibly shook out of being nervous, and sweated heavily because he was going to do something he has never done before. The thoughts that lurked in his head of killing another person seemed right to him, because supposedly it was his â€Å"destiny†, but somewhere deep inside of him, he knew the act of murder brought consequences. This is where suspense begins to grow. Roskolnikov appears at her door, waiting for her to be in his presence. She opens the door to find him at her doorstep, and allows him to come in. Roskolnikov offered her something to distract her from seeing him get out his ax, and he was successful. The suspense by now has grown to a whole another level, where we read to find out if Roskolnikov is really capable of killing another person, or not. This part of the book ends with letting us know that he was libertine, and when the chance was presented to him, he got out his ax, and lacerated her until she lied on the floor, dead. Dostoyevsky, the author of Crime and Punishment, was successful in bringing in suspense to this part of the story. He was able to grasp for the reader's attention, in wanting to know more of what Roskolnikov was capable of doing, what would have been his next move, and leaving them in shock when they come to find out what he ends up doing. This had to be one of the times in the book of Crime and Punishment where suspense was presented. Works Cited Dostoyevsky, Fyodor. Crime and Punishment

Solution Focused Therapy And Rational Emotive Therapy

In the three introductory sessions that took place with my client Jean, I practiced Solution-Focused Therapy, Rational Emotive Therapy, and Humanistic Therapy. In this paper I would like to compare and contrast Solution-Focused Therapy and Rational Emotive Therapy as the primary techniques used in the introductory therapy sessions with my client. I have enjoyed practicing all three types of therapy in my three sessions with Jean, but felt that these two were the most prominent to reflect upon in this paper. Through our Introduction to Counseling class and our textbook readings I have learned numerous aspects about the various schools of therapy. I have enjoyed watching Solution-Focused Therapy and Rational Emotive into action†¦show more content†¦This would be unintentionally making it harder to get over the relationship’s ending. There are several questions that the text informs us that we should be mindful of when we are practicing Solution-Focused Brief Therapy. The questions that we should ask include, but are not limited to: What brings you here? What’s already changing? Suppose a miracle happens? What else will be different after the miracle? How is the miracle happening even a little? On a scale from zero to ten (how close are you to 10)? What else can be done? In my introductory counseling sessions I was able to ask my client several of these questions. In my introductory session I asked Jean what brought her to speak with me. Note taking is to be done after the first session unless you are writing down positive things to reinforce back to the client. There is only a break in the first session if needed, anything else would be inappropriate. After my first session I was able to reflect on our notes in preparation for my second session. In my second session with her I asked her what else could be done in regard to making her comfortable to speaking with professionals in the future. As Jean was thinking about goals I also asked her to tell me what else had been changing since the beginning sessions. They questions really helped me to gain perspective through the client’s eyes. In our class readings Solution-Focused Therapy is discussed, â€Å"Solution-focused therapists have foundShow MoreRelatedSolution Focused Therapy And Rational Emotive Therapy2124 Words   |  9 PagesI practiced Solution-Focused Therapy, Rational Emotive Therapy, and Humanistic Therapy. In this paper I would like to compare Solution-Focused Therapy and Rational Emotive Therapy by talking about both individually. I would also like to talk about the differences in these two therapies. I would also like to share how I used these therapies as the primary techniques in the introductory therapy sessions that I had with my client. I have enjoyed practicing all three types of therapy in my threeRead MoreTheoretical Perspective As A Professional School Counselor1452 Words   |  6 Pagesapproaches important, but the counselor’s own values and personal philosophy are equally fundamental for the counselor to do their job efficiently. This paper will cover multiple theories, such as solution-focused brief therapy (SFBT), rational emotive behavioral therapy (REBT), and person-centered therapy. These theories relate to my own viewpoints and attitudes. The view of human nature, the problems associated with human nature, the process of changing, and how I will use these theories in practiceRead More Roger’s Theory as compared to that of Ellis’ Theory Essay973 Words   |  4 Pagesand philosophy of education influenced his personal life experiences which led him to a revolutionary of theory of therapy (Corsini, 2011 p. 148). According to an electrical resource, Client –centered therapy is a form of talk psychotherapy developed by psychologist Carl Rogers in 1940s and 1950s (â€Å"PCT†, n.d.). Certainly, Rogers’ non-directive approach to client- centered therapy focused on the importance of individual feelings and perceptions of self in the present. Rogers believed that this processRead MoreEssay on Compare and Contrast Rebt and Cct3990 Words   |  16 PagesClient–centred therapy and Rational-emotive behaviour therapy. The Clientâ₠¬â€œcentred therapy and Rational-emotive behaviour therapy are both offspring’s of great personalities in the field of psychological therapy, Carl Ransom Rogers and Albert Ellis respectively. They were the creators of these fundamental therapeutic approaches, which proved to be of great importance in the development and evolution of counselling and psychotherapy. There are several commonalities between the two approaches of therapy and alsoRead MoreCognitive Behavior Therapy : The Traditional Form Of Behavior1166 Words   |  5 PagesCognitive behavior therapy has emerged from the traditional form of behavior analysis. Psychotherapist Albert Ellis began implementing an approach he referred to as rational emotive therapy in 1955 (now called rational emotive behavior therapy, or REBT). With credit given to certain aspects of Adlerian therapy, REBT is generally considered as the foundation of today’s cognitive behavior approaches. With a concept that emotions stem fro m our personal beliefs and impact interpretations to real-lifeRead MoreTheories2900 Words   |  12 PagesTheories 1 Theories Individual Counseling Theory Techniques Lamar University Theories 2 Theories Adlerian, Cognitive Behavioral and Solution-Focused Brief Therapy are three major theories that are used extensively in the counseling world. 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It was then Ellis realized that his future did not involve being a novelist Ellis decided to start a part-time private practice for sex and family therapy after he was awarded his master’s degree in 1943. By the time he was awarded a doctorate from Columbia in 1947, Ellis truly believed that psychoanalysis was the best form of therapy. He quickly decided that he wanted to manage training analysis. Sadly, none of the psycho analytic institutes would not accept anyone without M.D. s, so EllisRead MoreCounseling Theories and Use in School Setting1717 Words   |  7 Pagescounseling theories will help school counselors to effectively help the special populations on their campus. This paper will explore the key concepts, therapeutic process and applications of Adlerian Theory, Cognitive Behavior Therapy and Solution Focused Brief Therapy. These therapies will also be evaluated as to their appropriateness with school-aged and adolescent children. Adlerian Theory Key Concepts Alfred Adler is known worldwide as a philosopher and psychiatrist. He based his theories fromRead MorePsychological Illness Disorder And Controlled Substance Abuse Essay826 Words   |  4 PagesPsychological illness, disorder and controlled substance abuse include our mental and emotional health with this the behavior therapy care is the treatment choice (Bissell Royce, 1994). This cognitive treatment helps client to search inside themselves and help them focus, transforming unhealthy inadequate attitudes, opinions or irrational ideas (My Unique Student Experience. 2017). Clients must understand that an individual thought process typically governs their actions. Clearly explain to the

Severe Emotional Disturbances (SED) Classrooms

Self-contained classrooms for students designated with emotional disturbances need to create a structured and safe environment for students with behavioral and emotional disabilities to learn appropriate ways to interact with peers and adults. The final goal of a self-contained program is for students to exit and join the general education population in regular classrooms. Students with SEDs may be included in general education classrooms with support from a special educator. In many cases, when a students behavior puts him or herself at risk or threatens typical peers, they may be placed in self-contained settings. Sometimes, when children have come to the attention of law enforcement because of violent or destructive behavior, they may return from some form of confinement to a residential program. Decisions are often made on LRE (Least Restrictive Environment) based on the safety of the student, peers, and teachers. Because these special placements are very expensive, many school districts look to self-contained programs to help students with Severe Emotional Disturbances re-enter the general education population. Critical Elements of a Successful Classroom Structure, Structure, Structure: Your classroom needs to exude structure. Desks should be in rows, evenly spaced (maybe even measure and mark each spot with tape) and should be aligned so that students cannot make faces at each other. Trust me, theyll try. Classroom rules and reinforcement charts need to be clearly displayed. Be sure that all materials or resources are easily available, and that your classroom layout requires as little movement as possible. Students with Emotional Disturbances will use sharpening a pencil as an opportunity to annoy a neighbor. Routines: I make no bones about the fact that I am a devotee of Harry Wongs excellent book, The First Days of School, which lays out ways to create routines for a classroom to run smoothly. You teach the routines, you practice the routines, and then you make very sure that everyone (even you) follows the routines and executes them with fidelity. Routines require a teacher to anticipate the sorts of challenges he or she will meet. Its wise for new teachers or new emotional support teachers to ask a veteran special educator to help them anticipate the kinds of problems that you will meet in an Emotional Disturbance program so you can build routines that will avoid those pitfalls. A Token Economy: A lottery system works well in general education classrooms to reward and reinforce appropriate behavior, but students in an Emotional Disturbance classroom need ongoing reinforcement for appropriate replacement behavior. A token economy can be designed in a way that connects it to individual behavior plans (BIP) or a behavior contract to identify target behaviors. Reinforcement and Consequences: A self contained classroom needs to be rich in reinforcers. They can be preferred items, preferred activities, and access to the computer or media. Make it clear that these reinforcers can be earned through following rules and appropriate behavior. Consequences also need to be clearly defined and clearly explained so students know what those consequences are and under what circumstances they are put in place. Obviously, students cant be allowed to suffer natural consequences, (i.e. if you run in the street you get hit by a car) but instead should experience logical consequences. Logical Consequences are a feature of Adlerian psychology, popularized by Jim Fay, co-author of Parenting with Love and Logic. Logical consequences have a logical connection to the behavior: if you tear up your shirt during a rant, you get to wear my ugly, ill-fitting shirt. Reinforcement needs to be things that your students actually find important enough to work for: although age appropriate is the mantra of the day, if behavior is extreme, the most important factor has to be that it works. Create menus of appropriate reinforcers from which students can choose. Choose or design reinforcers that you can pair with replacement behaviors. For example, a certain number of days with a certain number of points, and the student gets to eat lunch in the lunch room with a partner class. A certain number of day with a certain number of points might also earn a student the opportunity to invite a typical peer to play a game in the ED room.

Analysis Of August Wilson s Fences - 1840 Words

In today s society people have to deal with several issues that we can t explain. For some of us we built fences to isolate ourselves from others or in some cases to protect ourselves. No matter what the issue is we, all have to struggle to be able to provide for our families. As a child I built fences when it came to my feelings. For example, growing up I was in the chunky side. Since I wasnt so skinny like the pretty girls in my class. I kinda isolated my self from the other students. That way my feelings wouldn t get hurt. My fence was to protect me from what I thought was going to hurt me. Well the same thing happened to Troy Maxson. In the play, Fences written by the well-known playwright, August Wilson, is the story of Troy Maxson and his beloved family. Throughout the whole entire play, a fence is being built around the Maxson household. As the story unfolds to the viewers, the word fences may look like a simple title, but the truth is it has different symbolic meaning. The r eal definition of the word fence is revealed along with the personalities of the characters in the play. In Fences, August Wilson uses different types of fences as a metaphor to explain how these people live. Our play takes place during the year 1957. During the mid-1950s, America was still experiencing a post-World War II, economic boom, and of course allowing foreign affairs to take action when dealing with domestic issues. According to PBS channel during the year 1954 the SupremeShow MoreRelatedAnalysis Of August Wilson s Fence 1146 Words   |  5 PagesLong Eng 200 August 13,2017 The play â€Å"Fence† by August Wilson’s has a connection with real world fence. â€Å"The yard is a small dirt yard, partially fenced, except for the last scene, with a wooden sawhorse, a pile of lumber, and other fence-building equipment set off to the side. The Opposite is a tree from which hangs a ball made of rags. A baseball bat leans against the tree. Two oil drums serve as garbage receptacles and sit near the house at right to complete the setting† (Wilson 2). He mentionsRead MoreAnalysis Of August Wilson s Fences1609 Words   |  7 PagesIn 1965, August Wilson’s â€Å"Fences† was created as the fifth part of his Pittsburg Cycle of dramas of the 20th Century investigation of the evolution of black culture. The play has an abundance of symbolism and metaphors that tells the late life story of Troy Maxon and the family that surrounds him. Even from the beginning of the drama there is conflict and foreshadowing that can be attributed to his ow n belief that he has failed in life and that the world did not give him what he deserved. He takesRead MoreAnalysis Of August Wilson s Fences 970 Words   |  4 PagesWe sometimes believe that by creating barriers around ourselves and the people we love, it will keep us safe and together. August Wilson is an African-American playwright from Pittsburg, Pennsylvania who was raised with his five brothers and sisters by his mother who worked hard to support them after his father, a white man left them. His mother found another man who also helped her raise them. In this time, it was very hard for African-Americans because it was the time when White Americans and AfricanRead MoreAn Analysis Of Henrik Ibsen s A Doll House And August Wilson Fences 1224 Words   |  5 PagesTwo Women and Their Breaking Points Taking a glance at the work of Henrik Ibsen â€Å"A Doll House† and August Wilson â€Å"Fences†, readers would believe that the writer’s characters Rose and Nora could not be any more different from one another. But, as one would exceed deeper into the critical themes of the characters and of the two plays, the similarities can be drawn. The two women share more in common than ones may think, in terms of their characterization. In the play â€Å"A Doll House† the main characterRead MoreSymbolism In Fences By August Wilson1460 Words   |  6 PagesKeep Love in or Lock it Out?: An Analysis of Symbolism in Fences Symbolism is defined as an artistic and poetic movement or style using symbolic images and indirect suggestion to express mystical ideas, emotions, and states of mind. In Fences by August Wilson, symbolism is used heavily throughout the play in order to represent deeper meanings and add to the emotion of the storyline. In order for the play to have so much depth and emotion, symbolism is crucial to the work itself and the heavy topicsRead MoreNotes On The Novel Fences And Pied Piper Of Tucson 1080 Words   |  5 PagesYou Been?† and Mara Bovsun’s article, â€Å"Pied Piper of Tucson;† they identify and describe ways authors ‘hook and hold’ readers with specific choices. Next, students read the play Fences by Pulitzer Prize winner August Wilson and analyze the role of stories within in the story to create tension and advance the plot. Fences is the foundation for the unit’s cornerstone task: after ranking and discussing important lines in the play, student perform them, and reflect on the impact of the important linesRead MoreFences Research1694 Words   |  7 PagesBoundaries in August Wilson’s Fences The early 1950’s was a time of enormous importance because of the Civil Rights Movement which emphasized equal rights for blacks and whites. According to the book Approaching Literature, this time period became very familiar to August Wilson, the author of the play Fences. Wilson, an African American man, was raised by his mother and his ex-convict father. For a short period of time, before moving back to his old neighborhood, Wilson lived in a primarilyRead MoreSocial, Political, And Family Issues On August Wilson s Fences1596 Words   |  7 PagesSocial, Political, and Family Issues in August Wilson’s Fences August Wilson’s Fences depicts life in the 1950s for a typical African American family. The play touches upon racism, shifting family dynamics, and the politics of war. While racism plays an important and vital role in the play, instead of lamenting the issue, Wilson uses the characters as a weapon against the rampant racism of the time. In the same fashion, the relationship between Troy, Rose, and Cory demonstrates the shifting culturalRead MoreFences: White People and Troy Essay1719 Words   |  7 PagesAnalysis of â€Å"Fences† August Wilson’s famous play â€Å"Fences† is a drama set in the 1950’s. Being a winner of the Pulitzer Prize for the best play of the year, this play has had many positive responses to blacks and whites in this society. It is about protagonist Troy Maxson as well as his african american family that is filled with drama and excitement. In Wilson’s Fences by Joseph Wessling he expresses, â€Å"Fences is about the always imperfect quest for true manhood. Troy’s father was less of a â€Å"true†Read MoreThe Rise And Fall Of Troy Maxon1278 Words   |  6 PagesFall of Troy Maxon: An Analysis of August Wilson’s play Fences In Fences, August Wilson, the playwright, provides a believable and powerful examination of the African American experience in the late 1950’s. It provides an apt portrayal of the mentality of African American men going into the civil rights movement, as well as a well-developed account of the friction that occurs between a father and a son, and a husband and wife in the face of conflict. According to Wilson, his play provides Caucasians

Monetary, Fiscal and Exchange Rate Policy free essay sample

A study of the connection between monetary policy, fiscal policy, and the exchange rate policy. This paper explains monetary, fiscal and exchange rate policies separately, with definitions by different economists to balance the arguments. It is then followed by a discussion of their connection to each other, involving issues such as GDP, government expenditure, and interest rates. McDonald states monetary policy is the governments policy on setting the level of the money supply (1996: 149). It is the Reserve Bank of Australia (RBA)s attempt to change the quantity of money and interest rates so as to affect aggregate demand and, ultimately, equilibrium real GDP and the price level. Monetary policy, fiscal policy and the exchange rate policy are used by the RBA and by the Treasury to moderate fluctuations in a countrys economic growth rate and to maintain an appropriate trend growth rate. In todays world of floating exchange rates, it can be demonstrated that monetary policy is more effective at controlling macroeconomic conditions than fiscal policy is. We will write a custom essay sample on Monetary, Fiscal and Exchange Rate Policy or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page