Self Ethic Evaluation Essay Example | Topics and Well Written Essays - 1000 words

Self Ethic Evaluation - Essay Example This only makes things easier to analyze and thus implement at a later stage. I have also known that by being ethical I am only following the nature in one way or the other. It adds up to the kind of optimism that one can wish for in this day and age with immense negativity already being portrayed by the media and related tangents. My ethical domains have thus come from my own comprehension with regards to tasks and actions which have been drawn up with the passage of time and since I have grown and developed I have also found out that this is the best foot forward. I need to remain in loop with ethics as it makes me feel at ease with my own self and the people who are around me or the ones I am dealing with on a day to day basis. My ethics is therefore a manifestation of who I am and how I would like to see things through on a regular level. A self evaluation of ethics deduces the fact that I am indeed on the right path as far as ethical dimensions are concerned as these beef up my personality in more ways than one. These allow me to remain vigilant with my tasks and undertakings, and to be loyal towards doing something worthwhile for the sake of the society in the long run. As far as my personal ethics are concerned, I would describe these to be a combination of doing well for others as well as paying heed to what others have to suggest without having any malice whatsoever. My personal ethics is therefore a documentation of how my personality has shaped up over the years and how I wish to see things in proper contexts and perspectives. My personal ethics takes a leaf out of my father’s book who I respect immensely. I have seen him manage things in a moral way time and time again, and this is the manner under which I have been able to achieve much success over the years. I have learned that by being ethical, one can have a good rapport with the people around him or the ones who work alongside him. By being ethical, one can learn many new things in life which would have been difficult to envisage if ethics were missing from the related realms (Mauro, Natale and Libertella 1999). My personal ethics is banking a great deal on how I view things from an ending viewpoint. This means that I deduce the result beforehand and then decide how to go about managing activities and behaviors. It allows me to learn new nuances and get the feel of quite a few tangents, all of which remain significant towards my life. When I derive happiness and satisfaction from what I do in my personal activities, I find out that my ethical domains have been truly manifested. This allows me to comprehend where I was right and where I have gone completely wrong. I make amends and discern how I shall shape up my life in accordance with my personal ethics which remain quintessential to me. In entirety, I keep on learning new aspects and adopt from others what they do with regards to their respective ethical definitions. This is a classic case of learning in a hands- on fashion because it allows me to manifest what I am continuously finding out. Business has a huge list of responsibilities attached to it as far as incorporation and implementation of ethics is concerned. This is because it has to satisfy a number of publics on many levels. It has to be accountable to the people for which it exists, i.e. the customers, as well as the ones who are working under its aegis – the employees. The role of the business within this day and age is not only to make a profit but do it

Strategic Management Coursework Example | Topics and Well Written Essays - 500 words

Strategic Management - Coursework Example Coca Cola itself has stated growth rates with the gradual diversification policy. According to its reports for the year 2013 and third quarter, the overall sales rose by a figure of 2 percent and this was largely attributed to the policies in context of diversification (Trefis, 2013). This in turn brought about a balance to the company’s standing and performance with regard to the previous quarter’s performance.. Diversification is a process when the given company changes its focus from one particular product or item to multiple items and services. This brings along various considerations, challenges and questions with regard to future trends, policies, and actions along with marketing patterns that are needed to be kept intact. This scrapbook looks into these dimensions in case of two globally recognized brands of beverages namely Pepsi Co and Coca Cola. Each has over period of time moved from single item to diversified product and service delivery. Coca Cola’s diversification plan and products delivery came about in the form of Coke Diet, Fanta, Sprite, Mineral water and various other side products that have given Coca Cola an impetus in the market in terms of sales (Volkman, 2014) Such a process of diversification brings along strategic management principles and actions with itself. These include the concept of layout, feasibility against the new product and the communication, promotion and marketing strategy against the given items that are aimed at for expansion. Coca Cola’s diversification plan and products delivery came about in the form of Coke Diet, Fanta, Sprite, Mineral water and various other side products that have given Coca Cola an impetus in the market in terms of sales (Volkman, 2014) The process of diversification opens with itself the new horizons of expanded market. The expanded market in turn leads to increased demand, expanded supply chain network and insuring the timely delivery of products and services.

General Strain Theory

General Strain Theory Agnew (2001) produced three different categories of strain that have the potential to induce a negative reaction. These categories include: being in the presence of negative stimuli, not being able to get past goal blockages, and the loss of positive stimuli. In context of the category of strain related to being in the presence of a negative stimulus, a negative stimulus can be described as any stimulus that has undesirable consequences. Some examples of negative stimuli include but are not limited to: sexual abuse, physical abuse, harassment, teasing, bullying, or any form of violence. With regard to strain as it relates to goal blockages, this form of strain involves an individual failing to meet their desired goals for one or more various reasons. An example of goal blockage would be when someone is unable to attend a prestigious private college because they cannot afford to pay tuition. Finally, in regard to the last category of strain, the loss of positive stimuli, positive stim uli can be operationally defined as a loss of a stimulus that has a desirable consequence. An example of one such positive stimulus would be an end to a desired relationship, or loss of a loved one. In addition to these three categorical theories of strain, Agnew (2001) came up with the idea that there are two different ways by which to measure strain: subjectively and objectively. Agnew (2001) says that subjective strains refer to conditions and events that are not liked by the people who are actually experiencing the m. In other words, subjective strains are personal conditions that someone has an aversion towards based on their experiences. Conversely, objective strains refer to negative conditions/ events that are not liked by most of the members of a specific group (Frggio Agnew, 2007). A powerful and common example of objective strain would be when people are or feel they are being deprived of basic human necessities. Agnew (2001) stated that almost all of his research on General Strain Theory involved using dealings of objective strain, with barely any measures of subjective strain. After Agnew came out with the aforementioned statement about not using as much subjective strain research as objective strain research, he became worried that other researches would undermine the integrity of Strain Theory on the basis that objective strains occasionally for m minor subjective strains (Agnew, 2001). What Agnew was suggesting in supporting objective strain over subjective strain was that emphasis needs to be placed on objective strain research; he never discredited the role of subjective strain research at any point.. As stated in the introduction, not everyone who experiences strains goes on to commit crimes. Instead, the vast majority of individuals have coping mechanisms that aid in the diversion from taking part in criminal behaviors. Agnew (2001) stated that it is only when these coping mechanisms fail that criminal activity may ensue. Agnew (2001) discusses four different types of characteristics that can potentially lead to coping by means of criminal behavior. The four different characteristics that will most likely lead to crime in the instance that coping mechanisms fail to provide sufficient relief from the experience of strain include: unjust, high in magnitude, associated with little to no social control, and strains that create stress or incentive to engage in criminal activities (Agnew, 2001). First, strain is more prone to lead to criminal behavior when it is seen as unjust or unfair, as this perception has the potential to trigger negative emotions, such as anger. When anger comes in to the picture, the individual will potentially think irrationally, making it easier for them to engage in criminal actions (Agnew, 2001). These crimes are often called crimes of passion. An example of a crime of passion can be seen in a husband assaulting a man he discovers his wife cheating on him with. Second, individuals turn to crime if the strain is perceived to be high in magnitude. More specifically, if an individual perceives strain as being significant, they are more likely to commit criminal activity than they would be if the strain was not as significant. For example, someone with a small amount of debt is less likely to engage in delinquent behavior than someone who has a large amount of debt. Another characteristic of strain is observed when a strain is coupled with little to no social control, which increases the likelihood of an individual committing a crime. Agnew (2001) says that this category of low social control can be broken down in three smaller subcategories: commitment, attachment, and absence of direct control. The fourth and final characteristic of strain that can lead to criminal behavior occurs as a result of strains that create stress or incentive to engage in criminal activity. One way stress can cause an individual to engage in criminal behavior can be seen occurring in response to financial hardships. For example, if a family is struggling financially, the son from this family may resort to physically assaulting other kids and stealing their money or possessions. Another example that would work for the fourth characteristic would be if the individual observes his/her model committing a crime. On Thursday, March 3rd, 2011 at about 11:00 a.m., police responded to a report of a possible child abduction in Palmdale, California. The suspect was a seventeen year old father who had taken his five month old baby. The sheriffs department located Christopher Earl Glass and his son, Christopher Glass Jr., driving in Glass car, and began to pursue the vehicle. During the course of the pursuit, deputies noticed Glass making stabbing movements inside the vehicle. As the sheriffs closed in, Glass crashed his white SUV, then took off on foot. A couple of deputies chased after the suspect, while others looked inside the SUV to check on the child. Christopher Glass Jr. had been stabbed multiple times. Police rushed the injured five month old baby to the hospital in a squad car. Regrettably, Christopher Earl Glass Jr. was pronounced dead at the hospital. While being pursued by authorities, Christopher Earl Glass broke in to a random house and, when cornered, charged at the police with a kni fe in hand, resulting in him being shot to death. By looking at all of the facts of the case, Agnew would say that this crime falls within the classification of General Strain Theory. First, Agnew would say that the strain experienced by Christopher Glass in this case could be measured subjectively, due to the fact that Glass was under extreme emotional distress.. Christopher Earl Glass thought that having a child at age 17 was too much to handle, and cracked under the pressure of being a new father. Agnew would also say that Christopher Earl Glass was under a great deal of strain because he was in the presence of a negative stimulus, goal blockages, and because he was experiencing a loss of positive stimuli. The new negative stimulus Glass experienced was his babys mother constantly hounding him for support and payments. Christopher was a talented athlete who was looking for the chance to get a scholarship to play collegiate basketball, but since he had a child, all of his dreams of ever going professional came crashing down. He al so had a loss of positive stimulus because he was a new father who had all of these new responsibilities that kept him from going out and having fun. These negative feelings, coupled with a loss of positive feelings, caused Christopher to think that getting rid of his son was the only means he had by which to restore balance to his life. Agnew would also say that Christopher shows all of the four characteristics that would make him want to resort to criminal behavior. In Christophers eyes, having a child at age 17 was an unjust situation. He was probably thinking to himself, Thousands of teens have unprotected sex every day; why did I have to be the one to have a child? Also, his babys mother chose not to have an abortion, and this might also have been something Christopher perceived as unfair. Because Christopher was a gifted and talented athlete, having a child at such a young age must have been perceived as a problem high in magnitude, because the responsibilities of being a new father redefined his priorities. The next characteristic of low social control can be seen when the babysitter essentially gave the baby to her father without contacting the authorities right away. Finally the last characteristic of strains that create pressure or incentive to engage in criminal activities is present because, in the report , it was mentioned that Christophers coach was talking to him about getting a scholarship to go and play collegiate basketball. This last characteristic of criminal coping was the final catalyst for Christophers need to relieve strain by means of criminal activity.. Agnew would argue that because Christopher did not have the coping skills to deal with his problem, he resorted to delinquent behaviors in order to deal with his situation.

Blessing by Imtiaz Dharker Essay -- Blessing Imtiaz Dharker Poems Poet

Blessing by Imtiaz Dharker Imtiaz Dharker’s poem can be read in two ways. A straightforward reading might suggest that the poem is simply a description of an incident when a pipe bursts and people run excitedly for the water. A more considered reading, however, would see the poem as being more ominous and disturbing. Under the apparent good fortune and excitement of the scene are darker ideas about the poverty and superstition of the people in the poet’s native country. It is the second reading we will be exploring in this revision programme. Either way, the attitude to water in the poem should make us in the West wonder at how much we all take for granted, and how too often we squander the earth’s resources. Dharker paints for the reader a vivid scene using visual and aural imagery. For instance, after opening with a powerful visual image, the poet goes on to make us hear the smallest noise ‘echo/ in a tin mug’, before upping the sound level with the ‘roar of tongues’ as people descend on the pipe. The title of the poem appears to be ironic. These people are not blessed - they have little water of their own. Only superstition could lead them to count this ‘municipal pipe’ burst as a blessing. In reality, it shows the poor state of the pipes, part of the city’s basic infrastructure, pipes that should be carrying water to the people. The fact that the people live in ‘huts’, that the children are ‘naked’ and that everyone is ‘frantic’ for the water tell us a lot about the living conditions. There is a lot of sensual imagery in this poem. Mainly we hear and see the unfolding scene. These details show us what the people’s lives are like. In the following table are some of the vis... ... darker, and harder hitting. The layers of the poem reflect the way different people will see the same scene/culuture differently. Attitude The poet appears at first to be objective, describing but not commenting on the incident. And to some extent she leaves the reader to decide the feeling and meaning of the poem. Perhaps though there is horror and pity in that opening image of skin cracking ‘like a pod’. To me the poem seems like a lament for the poverty of these people and for the value system that keeps them poor, yet humble and thankful. Style Dharker uses sensual imagery to evoke the scene, and builds the rhythm of the poem into a crescendo at the bursting of the pipe. She uses an extended metaphor, comparing water to a god. She makes lines intentionally ambiguous, uncertain, so that the scene can be interpreted in more than one way.

Effect of Social Opportunity and Anxiety on Academic Achievement Essay

Agarwal P 2005 – A study of the effect of social opportunity and Anxiety on Academic Achievement and level of aspiration of secondary class science students Ph. D. Ed. Garhwal University ( Unpublished ) Bhargava Sunita 1992 – Achievement Motivation and creativity in relation to locus of control of socio-culturally deprived and non deprived adolescents Ph. D. Ed. ( Agra university ) Biswal, Premananda 1992 – Vocationalisation of education at +2 in Himachal Pradesh – An evaluative study. Himachal Pradesh University Chaudhary, Kirti 1990 – A study of the vocational Aspirations of standard IX students of English medium schools in Pune city M.  Phil. Education. University of Pune Emmanual, Mani Alias, Gupta M. 1987 – A study of Relationship between locus of control, Anxiety, level of Aspiration, Academic Achievement of secondary students. D. Phil Ed. Allahabad University Gupta, S. K 1991 – A study of two impact of training in career awareness and career decision making skills upon occupational attitudes and guidance needs of secondary science students Ph. D. Ed. barkatullah vishav vidhyalaya. Gautam Vimlesh 1990 – An investigation into the educational and vocational interests of students at the delta stages and their implications for future curriculum Ph.  D. Ed. University of Lucknow. Gupta V. 1990 – A study of vocationalisation of education at +2 stage in the Union Territory of Delhi Ph. D. Ed. The Maharaja Sayajirao Hamingthanzula University of Baroda. Hamingthanzula 2001 – A study of vocational interest and occupational aspiration of class X students of district headquarter of Mizoram as related to Socio-economic status and academic achievement Ph. D Ed. Mizoram. Jasuja, S. K. – A study of frustration, level of aspiraton and academic achievement in relation to age, educational and sex difference among adolescent. Ph.  D. Psy. Agra University. Javed , Abdul kureshi 1990 – A critical study of the vocational interest of the students of arts, science and commerce studying at graduation level in senior colleges in the rural areas. M. Phil Ed. Nagpur University. Jayapoorani N 1982 – Vocational interests of higher secondary school students, M. Phil H. Sc Coimbatore Avinashilingam Institute for Higher Education for women. Joshi, L. N. 1992 – Vocational achievement and problems faced by students who had passed the +2 vocational education examination. Independent study Udaipur state council of ducational research and training. Kaur D 1990 – Educational and Vocational Aspirations of students belonging to different Socio-economic locales of Jammu division. Ph. D. Ed. University of Jammu. Kanwar L. N. 1989 – A study of socialization practices a home and school and development of personal achievement motivation among secondary school pupil in Assam Ph. D Ed. Dibrugarh University. Mathur A. 1985 – A comparative study of the adjustment problems, level of aspiration, self-concept and academic achievement of crippled children and normal children D. Phil. Ed. Allahabad University. Mohan, Swadesh and Gupta Nirmal 1991 – Vocational students career behaviour and their adjustment in courses at the +2 stage. Independent study NCERT. Mohanty G 1972 – Level of aspiration as a function of sex, socio-economic factors and class performance. Ph. D. Psy. Utkal University. Nautiyal Sunita 2001 – A study of impact of family background, occupational and socio-economic status on vocational interest of post graduate students of urban and rural areas. Unpublished Dissertation, Garhwal Universiy. Ojha H. 1973 – Relation of achievement motivation to parental behaviour and certain socio-economic variables. Ph. D. Ed. Bhagalpur University. Pennamma V. V. 1991 – Pattern of occupation choices of secondary school pupils and school leavers Ph. D. Ed. University of Kerala. Pareek, D. L. 1990 – A comparative study of the self concept, personality traits and aspiration of adoloscents studying in central schools, state government schools and private schools in Rajasthan. Ph. D. Ed. University of Rajasthan. Pattinsthsr P 1989 – Economic parameters and interest of vocational stream students Madurai Kamraj University. Rai G. 2004 – A study of the effect of parental encouragement on self concept, level of aspiration and academic performance of adoloscents of Uttrakhand state. Ph. D. Ed. Garhwal University (Unpublished) Robert 1988 – A study of Socio-economic status and vocational choices of the students M. Phil. Madurai Kamraj University. Saraswati Anil 1988 – A differential study of achievement motivation, occupational aspiration and academic achievement of adoloscents in different type of school climate in Aligarh district. Ph. D. Ed. Agra University. Saraswathi L. 1992 – Relationship between personality dimension and voacational interest of pupils of class X. M. Phil. Ed. Madurai Kamraj University. Singh, R. D. 983 – A study of deprivation achievement and level of aspiration in high school students of science group. Ph. D. Ed. Gorakhpur University. Singh Ibotombi H 1984 1991 – A study of vocational preferences of high creative and low creative high school tribal pupils in Kohima district of Nagaland. Ph. D. Ed. Eastern Hill University. Shenoy S. 1989 – Traditional and Non Traditional career choices – A psychological study M. Phil. Psy. Banglore University. Saxena S. 1981 – A study of need achievement in relation to creativity, values, level of aspiration and anxiety. Ph. D. Ed. Agra University.

Racial Distinctions: the Lion King 2

Michaelah Frisby Jamie King English 101 2 December 2012 Racial Distinction: Lion King 2 Racial distinctions are –at times –hidden in different forms of media. They may be used to brainwash the audience in a discreet way, enlighten the concept of stereotypes, or even display a situation in which the racial distinction is unintended, yet utilized due to precedence. Racial distinctions are very present and, at times, reasonable. Disney employs these barriers so that the audience recognizes the unfavorable aspects of them. it One instance in which we find racial distinctions are in Disney’s The Lion King 2: Simba’s Pride.Given to misadventures and mischief, Kiara, Simba’s young cub, wanders into the forbidden Outlands, the haunt of Scar's exiled minions, and there she encounters another mischievous cub, Kovu, son of lioness Zira, once a close friend of the late Scar and now the leader of the exiles. Zira plots against Kiara, drawing her son into her sch eme. Kovu has divided loyalties as his love for Kiara deepens. Conveyed in the environments, the identities and the physical appearances, these differentiations possess evidence of racial distinctions.Overall, the environments in which the animals dwell can be categorized into two races: black and white. Kovu’s family –the darker, or black lions –live in a more deserted area away from Pride Rock, the flourishing lands. Their home appears abandoned, devastated and demolished. Ridden with dry lands and random fires, this space is where young Kovu and other young lions play, eat, and sleep –where they call home: â€Å"[You] exiled us to the out lands,† Zira, Kovu’s mother whines to Simba, â€Å"†¦Where we have little food, less water† (The Lion King 2: Simba’s Pride).Their habitat compares so well with the lower class neighborhoods cities if where black families live their lives, where there are abandoned homes and demolished memories. Young children play in an area where, unbeknownst to them, a drug deal took place seconds ago. Yet, they play there all the same. These harsh lands cause these lions to live at risk of crisis every day. However, we find Kiara and her family –the lighter, or white lions –literally living a much higher life. Surrounded by thriving lands and flourishing resources, Kiara’s life on Pride Rock is abundant.Her family is â€Å"wealthy,† in the sense, because her father, Simba, is the king and Alpha lion. Kiara is protected and her life is sustained impressively. She is enveloped by animals that love her and her family and praise her father because of his power. Much like the privileged white girl that lives on the upper side of the city whose father is respected due to his wealth, Kiara is secure and loved. Essentially, Kiara is identified differently from Kovu because of who she is. Because of whom her father is and what he knows. He knows that Kovuâ €™s mother, Zira, is dangerous.Thus, he protects her from Kovu, appointing Timon and Pumba, good friends of his, to protect her: â€Å"‘Hey, Timon! Pumba! ’† he calls for them. ‘I want you to keep a close watch on Kiara. You know she’s bound to run off (The Lion King 2: Simba’s Pride). Kiara is sheltered not only because of the dangers that Simba feel are out there, but also she is protected because he has the power to protect. He can do that because of his wealth and respect. The average upperclass white family man can protect his daughter this way with the employment of bodyguards and such.Simba’s attitude, throughout the majority of the movie, towards Kovu and his family is extremely degrading. He feels that they are not worthy to live on Pride Rock with the rest of the lions. He even goes as far to put them at the bottom of his â€Å"class system:† â€Å"‘I banished you from our pride lands. ’† He spit s at Zira. â€Å"’Now you and your young cub, get out! ’†(The Lion King 2: Simba’s Pride). He looks down on them because he, as the wealthier â€Å"white man† finds it hard to see them as equals. Happiness appears to surround Pride Rock. While Kiara’s life is full of love, Kovu’s is full of chaos.Kovu’s mother is harsh in how she raises him. Like a single African-American mother raising three children on her own in a decrepit neighborhood, Zira strives to raise her children the best way that she knows how with the few resources she has available. However, she is rough with her ways and tough with her love. She constantly puts down Kovu’s older brother Nuka, and unsuccessfully shields Vitani, Kovu’s little sister from the difficult ways of their land, exposing her to dangerous aspects of life, such as her plan for Kovu to kill Simba.Vitani greets Kovu one evening and playfully asks him if he wants to fight. Roughly is how they play. Here lies a parallel with the lack of sheltered love that is seen in a lot of lower class African American homes due to harsh surroundings, lack of toys, and neglect in parental guidance. Nuka despises Kovu because he can never please their mother: â€Å"Hey, it’s every lion for himself out here,† Nuka replies to Vitani scolding him for leaving Kovu on his own. â€Å"That little termite’s got to learn to be on his own† (The Lion King 2: Simba’s Pride).Kovu’s approach towards Kiara, when they first meet, is negative. He begins to growl at her with his young, yet fierce voice: â€Å"Who are you, pride-lander,† he asks Kiara with disgust. (The Lion King 2: Simba’s Pride) He makes fun of Kiara by saying that she is a daddy’s girl. Kovu learns these defensive ways from his mother and his homeland. It is all he knows. , Kiara’s attempts to play a game of tag with him are failed: â€Å"What’s w rong? Don’t ya know how to play? † she asks. (The Lion King 2: Simba’s Pride). Yet, when she begins to â€Å"play fight† with him, he responds playfully.Meanwhile, Simba and Zira’s means for punishment differ as well. Simba has a talk with Kiara about how the dangers of the world will negate her life if she continues to disobey his rules and run off on her own. He ends his lecture by singing her a song about family and sticking together: â€Å"We Are One. † Zira’s ways are much harsher. She screams at Kovu, scaring him intensely, telling him that he will never be friends with Kiara. Compared to human life: Zira –the black parent –scolds her child more harshly because she knows that if she does not, society will.And Simba –the white parent –gives much more leeway because society sees her skin color, or fur color, and suspects that she means no harm. Lastly, are the physical appearances of the characters. Kiar a’s family are the lighter cubs, which can be compared to a white family. Whereas Kovu’s family are the darker cubs, in comparison to a black family. Though Kiara and the lions in the pride lands vary as far as shades of light skin, they are lighter all the same. As far as physique, the lions of the pride lands are much more fit and appear more will-nourished in contrast to the lions of the outlands.These lions are much darker, and quite thin. They appear very malnourished. â€Å"Oh! These termites,† Nuka yelps as he viciously scratches, bites, and claws at himself (The Lion King 2: Simba’s Pride). Nuka appears to be the most dirt-ridden lion of them all. Kovu possesses a scar that he receives from his mother’s scornful actions. This scar represents a lot about where he came from. It even acts as a symbol for his father, Scar. Though Kovu was adopted, this scar aids in the resemblance of Scar and him. The use of these color distinctions to the char acters bestows visualization on the concept of these racial differences.Racial barriers are often hidden. Yet, they instill a number of aspects as far as information. In Disney’s The Lion King 2: Simba’s Pride, we find these barriers. They are portrayed in the environments, the identities and the physical appearances of the characters. And though they are not good or bad, they are necessary. These distinctions allow the audience to recognize the negativity in the barriers so that they do not out them forth. Works Cited The Lion King 2: Simba’s Pride. Dir. Darrell Rooney. Prod. Jeannine Roussell. Perf. Matthew Broderick, Neve Campbell, Andy Dick. Disney Pictures, 1998. Film

History and Evolution of Composite Materials

History and Evolution of Composite Materials When two or more different materials are combined, the result is a composite. The first uses of composites date back to the 1500 B.C. when early Egyptians and Mesopotamian settlers used a mixture of mud and straw to create strong and durable buildings. Straw continued to provide reinforcement to ancient composite products including pottery and boats. Later, in 1200 AD, the Mongols invented the first composite bow. Using a combination of wood, bone, and â€Å"animal glue,† bows were pressed and wrapped with birch bark. These bows were powerful and accurate. Composite Mongolian bows helped to ensure Genghis Khans military dominance.   Birth of the â€Å"Plastics Era† The modern era of composites began when scientists developed plastics. Until then, natural resins derived from plants and animals were the only source of glues and binders. In the early 1900s, plastics such as vinyl, polystyrene, phenolic, and polyester were developed. These new synthetic materials outperformed single resins derived from nature. However, plastics alone could not provide enough strength for some structural applications. Reinforcement was needed to provide additional strength and rigidity. In 1935, Owens Corning introduced the first glass fiber, fiberglass. Fiberglass, when combined with a plastic polymer created an incredibly strong structure that is also lightweight. This is the beginning of the Fiber Reinforced Polymers (FRP) industry. WWII – Driving Early Composites Innovation Many of the greatest advancements in composites were the result of wartime needs. Just as the Mongols developed the composite bow, World War II brought the FRP industry from the laboratory into actual production. Alternative materials were needed for lightweight applications in military aircraft. Engineers soon realized other benefits of composites beyond being lightweight and strong. It was discovered, for example, that fiberglass composites were transparent to radio frequencies, and the material was soon adapted for use in sheltering electronic radar equipment (Radomes). Adapting Composites: â€Å"Space Age† to â€Å"Everyday† By the end of the WWII, a small niche composites industry was in full swing. With lower demand for military products, the few composites innovators were now ambitiously trying to introduce composites into other markets. Boats were one  obvious product that benefited. The first composite commercial boat hull was introduced in 1946. At this time Brandt Goldsworthy often referred to as the â€Å"grandfather of composites,† developed many new manufacturing processes and products, including the first fiberglass surfboard, which revolutionized the sport. Goldsworthy also invented a manufacturing process known as pultrusion, a process that allows dependably strong fiberglass reinforced products. Today, products manufactured from this process include ladder rails, tool handles, pipes, arrow shafts, armor, train floors, and medical devices. Continued Advancement in Composites In the 1970s the composites industry began to mature. Better plastic resins and improved reinforcing fibers were developed. DuPont developed an aramid fiber known as Kevlar, which has become the product of choice in body armor due to its high tensile strength, high density, and lightweight. Carbon fiber was also developed around this time; increasingly, it has replaced parts formerly made of steel. The composites industry is still evolving, with much of the growth now focused around renewable energy. Wind turbine blades, especially,  are constantly pushing the limits on size and require advanced composite materials.   Looking Forward Composite materials research continues. Areas of particular interest are nanomaterials - materials with extremely small molecular structures - and bio-based polymers.

Starbucks Coffee Company Analysis

Starbucks Coffee Company Analysis Starbucks is the leading roaster and retailer of specialty coffee in the world and was founded in 1971 and based in Seattle, Washington. Starbucks is the largest coffeehouse company in the world, with 11,168 stores in 44 countries. Starbucks sells drip-brewed coffee, espresso-based hot drinks, Tazo teas, snacks and items such as mugs, and of course, their well renowned coffee beans. Within the last month, Starbucks has also launched a new instant coffee to compete in even more markets. This paper is an overview of the Starbucks Coffee Company and will provide recommendations regarding price, production, and composition of inputs.Company OverviewStarbucks Coffee Company began in 1971 out of Seattle, WA. The company opened the first store in Seattle's famous Pikes Place Market. In the mid 1980s Starbucks tested the concept of the small espresso bars and they were a huge hit. Between 1985 and 1991, Starbucks changed its name to Starbucks Coffee Company and acquired more than 100 stores. English: Starbucks' headquarters building in Seatt...In 2002, Starbucks owned and operated over 5,000 stores and by the end of 2007, the company owned and operated more than 14,000 stores (Starbucks, 2008).Starbucks as a company has taken years to become this industrious. This is in part to the key management and staff members that are in place at each Starbucks coffee store all over the world. All Starbucks employees undergo extensive training to ensure the customer experience is exceptional. Starbucks has also invested time and money in all types of coffee machine technology to improve productivity and product quality, which has allowed them to continue doing extremely well as a company. Part of their success has been due to their capital investment in all types of machinery regarding coffee, not only to make coffee at their stores but also to produce the actual coffee...

Career Development Theories for Women

Career Development Theories for Women Women’s career development is different from men’s for at least two reasons. Gender stereotypes can affect women to underestimate career possibilities, and childrearing responsibilities of motherhood can complicate her a woman’s balance of career and homemaking roles. Coogan and Chen (2007) think that Gottfredson’s theory of self-creation, circumscription, and compromise, and the social cognitive career theory, and Super’s life-span and life-space theories can be used to understand women’s psychological path of career decision making. Counselors can apply principles of these theories to assist career development of women (192-193). Gottfredson’s theoretical models (1981, 2002, 2005, as cited by Sharf, 2010) explain how childhood gender role beliefs involve individuals’ career choices. Children form self-concept through early childhood to adolescence. As early as lower years of elementary school, children think about their socia l selves and discard occupations that are incompatible with their sex roles. By the years of secondary school, these children also put value on social appraisals, and reject jobs which unfit their own social classes and family expectations. By the adolescence years, in consequence, they seek jobs within their gender roles, social classes, and family expectations (, 199-206). For example, an elementary school girl eliminates truck driver as a career option because this job does not match her gender role. Later, this girl also eliminates factory worker because this job does not match her family background. In consequence, she chooses nurse because this job matches her gender role, social class, and family approval (Sharf, 2010, 199-206). Social cognitive career theory also explains how gender stereotypes influence women’s career developments. Social cognitive career theory is was originated in by Bandura’s 1986 social cognitive theory(as cited by Sharf, 2010) and the cor e concept is self-efficacy, which is self-belief of abilities and capacities to accomplish something (specific page number needed here). (Don’t put all the rest of the dates as those are just each year after the first year Bandura updated or revised his publications.) Cultural and gender role expectations within one’s contextual, as well as immediate environment, such as availability of role models, counselors or financial support etc., affects his/her level of self-efficacy and career goal setting (as cited in Sharf, 2010, 393-398). As this is more of a 2nd hand citation, you need to clearly show it as such. And, 393 to 398 is too great a page spread. You need a more specific page number(s). Women with low self-efficacy for the world of work are known as to seek traditionally female dominated jobs, and limit possibilities of job satisfactions and earn high salary (Coogan and Hackett & Betz, 1981, as cited by Sharf, 2010) emphasizes importance of immediate environment . Counselors can influence women clients to enhance their level of self-efficacy on the field of nontraditional female occupations, and subjects of math and science by teaching them that fears of these areas are only socialized gender stereotypes (401). Encouragement is influential for shaping one’s self-efficacy and career goal setting. Whitmarsh, et al. (2007) compared two groups of women. One group was consisted from professors, physicians, and attorneys. These occupations are traditionally dominated by men but getting explored by women. Another group is consisted from social workers and teachers. These occupations are traditionally dominated by women. Women with preceding group said that they received strong encouragements from not only their family members, but also educators and counselors to pursuit these careers, while women with the other group said that they received messages from family members that these careers are suitable for women (230, 233).

Management Ethics Coursework Example | Topics and Well Written Essays - 250 words

Management Ethics - Coursework Example This is because of the fact that he let the argument end thus according Willi an opportunity to survive. At the time when the boats had just sunk, Willi knew very well that he was headed to an enemy’s boat, his persistent plea and aggressiveness saved his life. He engaged the crew in the boated in an animated debate and he completely denied being an enemy, this portrays a clear evidence of an aggressive communication style. There is a strong evidence of compatibility of the styles used in this movie; the strong interconnectivity between fate of the characters and their communication prowess is highly defined. Willi used his communication aggressiveness to convince the crew at the time he boarding the boat, and also when he killed Gus when the rest of the crew in the boat was asleep. An interrelation is shown between aggressiveness and assertiveness, this is when Willi insisted that he was not an enemy while at the same time Garrett and Connie Porter took an advantage of the passiveness in Kovac’s communication style and made sure that Willi was not drowned. Several communication patterns are shown in different episodes in this movie, major patterns are either verbal or non verbal. The verbal patterns are accompanied with questioning as a pattern. That was used by Kovac when he interrogated more about Willi when he wanted to board the boat, however non verbal pattern is evident when Willi was ask ed about the whereabouts of Gus, his guilt in the drowning of Gus was evident when he started sweating unconsciously. Self concealing as a pattern was majorly used when Willi denied being an enemy knowing very well that he was not a Briton. The overall communication between the between the characters was highly effective as shown between Willi and the crew members at the time of boarding the boat, also it is evident when Connie Porter and Garret were

The Commodities Under Advertisement And Print Media Essay

The Commodities Under Advertisement And Print Media - Essay Example The magazine focuses on adults that are above the age of 18 but below 25. This group is commonly known as the young adults' group. The reason for stating that this is the most preferred age group for the magazine is because of the explicit content contained in the magazine. When reading the column on the right of the left page one gets to view issues revolving around sex and it is such issues that should not be accessed by young people. In the contemporary environment, there have been different issues that involve young people getting into explicit behavior at a young age and the reason for this is the access to such magazines. It is from this that one understands that adults are the targets of this magazine. Young adults value information regarding new experience in the intimate sector. Many people around this age have little experience in intimacy and from the magazine, the audience value information regarding the subject of the column who discusses her experience when breaking her virginity. One gets to understand the reason why the young adults relate to the magazine The second advertisement is that of the acclaimed clothing line, Gucci. Gucci is an international store that has had the ability to capture the attention of many people from the classy products it has introduced into the market. When looking at the advertisement, one thing to note is the elegant bottle of perfumed displayed on the box. Prior to identifying the bottle, the first thing noticed is the color of the background in the advertisement.

Assignment (Economics) Example | Topics and Well Written Essays - 250 words - 7

(Economics) - Assignment Example The ban of a product hurts the consumer markets especially if the good was used by a lot of people. When vendors smuggle the goods and bring them to the marketplace illegally society benefits because these goods are providing a utility that is needed for the consumers. I believe that US citizens should boycott companies that abuse its workers in less developed countries. The only way for these companies to stop these unethical practices is for the customers to take proactive action to boycott these types of establishments. A full boycott of an item that is offered at much lower prices might hurt consumers that cannot afford to pay higher prices. Due to the different in opinions of customers it would be hard to implement a full boycott. Country A should produce toys, while country B should produce pineapples. Country A must trade toys for pineapples and country B must trade pineapples for toys. In general country A produces less toys or pineapples than country B. Their competitive advantage is in toys because country B can produce more than twice the amount of pineapples than country A. Since country B can produce 900 pineapples per day this country should concentrate on producing pineapples. The competitive advantage of country B in pineapples is 2.25 to

Pathological liar Research Paper Example | Topics and Well Written Essays - 1000 words

Pathological liar - Research Paper Example Once a lie is told, there is no changing it, no taking it back, and no easy resolution to solving the problems that it creates.† If lying becomes habitual and chronic, the liar becomes known to have developed into a compulsive liar. This is differentiated from a pathological liar, which is the topic of this research. This research paper is aimed at presenting relevant factors surrounding a pathological liar. A brief description of this disorder would initially be presented. The characteristics of this personality disorder would also be enumerated, as well as any remedies which might be available. â€Å"an individual who habitually tells lies so exaggerated or bizarre that they are suggestive of mental disorder†. In a study which differentiates a pathological liar from a compulsive liar, a pathological liar is described as: â€Å"someone who lies incessantly to get their way and does so with little concern for others. Pathological lying is often viewed as coping mechanism developed in early childhood and it is often associated with some other type of mental health disorder. A pathological liar is often goal-oriented (i.e., lying is focused - it is done to get ones way). Pathological liars have little regard or respect for the rights and feelings of others. A pathological liar often comes across as being manipulative, cunning and self-centered.† (TruthAboutDeception.com 2009). On the other hand, the same study defined a compulsive liar as â€Å"someone who lies out of habit. Lying is their normal and reflexive way of responding to questions. Compulsive liars ben d the truth about everything, large and small. For a compulsive liar, telling the truth is very awkward and uncomfortable while lying feels right. Compulsive lying is usually thought to develop in early childhood, due to being placed in an environment where lying was necessary. For the most

Telephone Assignment Example | Topics and Well Written Essays - 250 words

Telephone - Assignment Example Especially, unidentified information received should be treated with a lot of care even though it might be discouraging material. A plan should be developed to help first decision makers in performing on their judgments (Croft, 2001). Also workers assigned to find out should have the knowhow on how to be secretive with the information. In addition, sources from which the information is to be collected should be given notice: subjects whose data is being collected should be become aware of such collection. This is to certify that the source was willing to share the collected information without being forced, pressed or intimidated (Croft, 2001). Data collected should also be used for the intended purpose only Also personal data should not be given out to the third parties without notifying the source, this would lead to terminating the information on the basis of secrecy. The data collected from conversation should be kept as agreed on by the source (Croft, 2001). This enhances confidentiality of the information. Finally, the information collected should be kept secured from abuse, loss or theft. This could lead to failure of prime purpose why data was collected. Information should be kept of bound from suspicious people to maintain its validity (Croft, 2001). Security should therefore be the taken with seriousness to avoid any information from sipping to irrelevant

Religious Traditions Essay Example | Topics and Well Written Essays - 1250 words

Religious Traditions - Essay Example The concept of ‘Divine’ is found in all religions irrespective of whether it represents the sacred or self. They differ in how they conceive their relationship with Divine. Some recommend medication while others believe in individual communication with God. The early Quakers, for example, believed that they can commune with God without any intermediary like a priest as they say that Christ came to the world Himself and therefore each person can experience and respond to the divine and allow the action of the spirit. They consider ‘prayer’ as a means to enter a relationship with beyond. Though they do not have a strict embodiment of the divine and some of them may not even accept a personified divine, they might be in awe of the universe or identify themselves with someone in great hardship or relish the laughter of a baby and these actions are interpreted as their efforts to connect with the beyond. What they look for is the wisdom, guidance, and inspiration of the spirit or divine within and without (McBee, 2010).Hinduism has many Gods and Goddesses who are timeless and are unrestricted by space. â€Å"The divine is not only beyond gender and name, but also beyond number, has resulted in its manifestation in many shapes and forms† (Cline, 2010). Despite the numerous gods personified in the religion, the divine is the omnipresent universal soul. This can be found in all the natural elements. The followers are considered devotees and worship their favorite deity in a holy shrine or in a temple with or without the help of a priest.

Telephone Assignment Example | Topics and Well Written Essays - 250 words

Telephone - Assignment Example Especially, unidentified information received should be treated with a lot of care even though it might be discouraging material. A plan should be developed to help first decision makers in performing on their judgments (Croft, 2001). Also workers assigned to find out should have the knowhow on how to be secretive with the information. In addition, sources from which the information is to be collected should be given notice: subjects whose data is being collected should be become aware of such collection. This is to certify that the source was willing to share the collected information without being forced, pressed or intimidated (Croft, 2001). Data collected should also be used for the intended purpose only Also personal data should not be given out to the third parties without notifying the source, this would lead to terminating the information on the basis of secrecy. The data collected from conversation should be kept as agreed on by the source (Croft, 2001). This enhances confidentiality of the information. Finally, the information collected should be kept secured from abuse, loss or theft. This could lead to failure of prime purpose why data was collected. Information should be kept of bound from suspicious people to maintain its validity (Croft, 2001). Security should therefore be the taken with seriousness to avoid any information from sipping to irrelevant

The Day I was Released from Jail Essay Example for Free

The Day I was Released from Jail Essay March 2nd of 2011 in Charlotte NC I just receive 2 phone calls. The first one was from my lawyer in Morganton notifying me that several indictments had come through. The other was from Detective South of the Burke County Sheriff’s Office, telling me that I had no choice but to turn myself in. I remember him saying â€Å"If you run I will find you†. I thought about running from my troubles, but that isn’t a life that I wanted. The next day I took the long drive from Charlotte NC to Morganton NC knowing that I was going to jail for a long time. I turn myself in at the Magistrates office thinking that I will be showed some leniency, after all I was only 18 years old and it was the first time I had been in trouble. I thought wrong, I was given copies of my indictments and arrest warrants, given a 23,000 dollar bond and placed in Jail. I cried like I have never cried before, after all I was only a teenager going to jail with grown men. The date is May 3rd of 2011, in Morganton North Carolina. I had just finished serving 61 days for multiple breaking and entering charges. The dreaded court date has arrived and I am scared to death. Breakfast trays came along, I was hungry but I knew I wouldn’t be able to hold anything down. After breakfast trays were picked up my name was called for court. I was taken out of my cell and put into handcuffs and leg cuffs along with a chain attached to the waist I was dressed in the customary Burke County black and white inmate uniform. This was the moment where I felt all alone in the world. My mom and dad weren’t going to be there every step of the way telling me it was going to be okay. I was 18 years old; in the eyes of the law you’re a grown man and will be punished to the fullest extent of the law. Fear and anxiety were my biggest emotions. We were led to the top of the stairs where our court proceedings would take place. The judge was in no hurry to see me, I waited for an hour alone with nobody to talk to or comfort me. Another hour passed in shackles; finally the holding cell door opened and a deputy said â€Å"Campbell court. † Walking up the hallway that leads to the courtroom felt forever, my emotions were taking over. My teeth were chattering, cold shakes, and the fear of the unknown was getting the best of me. As I shuffled into the court I felt everybody’s eyes on me. The judge was seated glowering at me. He then proceeded to ask the D. A what my charges were, as the D. A was reading my charges I felt paralyzed, I was only 18 years old and facing serious criminal charges. We then discussed the plea bargain that my lawyer, D. A and I all agreed upon. I remember not even reading the plea just thanking God that I was getting out of this hell hole. After the plea was signed and all parties were satisfied, my lawyer looked at me and said â€Å"Mr. Campbell I wish you the best of luck, and hopefully you have learned your lesson. † I remember being grateful that he shook my hand and wished me â€Å"good luck†. I guess because he was the only one who stood by me this whole time. May 3rd 2011 is my release date; it’s a date that I will always remember. After waiting in shackles for another hour I was released from Burke County jail. I had one phone call to make, I called my mom and told her I was released and needed a ride. The jailers wished me the best of luck and opened the front door to freedom. It’s amazing how your sensitive your eyesight is after two months in County Jail. The sun and the sky was never something that I appreciated when I was younger, but when I walked through that doorway and felt the wind blow my face I remember feeling nothing but gratitude. It was spring time so the grass was green, leaves were starting to grow back and the sun was out in full force! After getting my eyes adjusted to the sun, I was waiting for my mom to pick me up. As I was waiting I recollected what I had just been through and what could have happened if the judge hadn’t accepted my plea. I had to go next door to the courthouse and check in with the Probation Office. After I checked in I was given a Probation Officer (Clarence Davis). He explained the guidelines of probation and what he expected of me. We discussed the conditions of my release, fines, and drug classes that I would have to take. I had 48 hours of community service, some seriously big fines and a drug assessment. I didn’t care what I had to do as long as I was out of jail. Sitting in his office I was looking at his walls and certificates, thinking I wonder how hard he’s going to be on me and what can I slide by him? Mr. Davis was and still is a good man; I have shared my thoughts and feelings with him without holding back. He was a great person who helped me in any way that he legally could. He would later retire and be replaced by Robb Williams, but then Robb would shortly be replaced by Trisha Plaster. Walking out of the Probation Office I called my mom again and waited for her to come pick me up. I could have spotted her car a mile away in traffic. I was never so happy to see that 09 Pontiac Grand Am. I knew she would take me home and tell me everything would be okay, getting out of jail I needed that family support. I am very grateful for my parents and how they still loved me unconditionally even after everything I had put them through. She pulled up and we had a tearful reunion in the Court House parking lot. She bombards me with question after question. Some things I told her and some things I wanted to keep to myself. After getting the reunion over she asked me where I wanted to go eat. I already knew where I wanted to go, I wanted to go home. I didn’t care about eating I just wanted to sleep in my old bed and enjoy the comforts of home. To be able to take a hot shower anytime of the day and not having to wear shoes in the shower were things I had forgotten. When we arrived at the house I took a shower and talked to my dad. All the emotions and tears that I was holding in during that day were released on his shoulders. After we talked for a while I went to sleep thinking of what I would do the next day. I had no job and no car. I was basically starting from scratch; friends and family had deserted me. I went through a really depressive time, feeling sorry for myself and blaming others for the trouble I had been in, when really I had nobody to blame but myself and the decisions I had made. I felt like I had nobody to talk to. It took a really long time for me to get out of my depressive state of mind. I started hanging out with people in my past that I shouldn’t have been. Socializing with these people lead me to Marijuana, with that I was introduced to Roxy’s, Molly’s (Ecstasy) and Liquor. I loved partying and â€Å"living it up† yet at the end of the day I was still left with that feeling of emptiness. I lost track of what I needed to be doing to straighten my life out and was headed back where I came from. I remember deceiving my probation officer, I would go in he would ask me how I was doing. Of course I would lie to him and tell him everything is great, knowing that I had just smoked the week before. I had him and other people fooled, or so I thought. My parents had gotten with their pastor and he had contacted a few people to intervene in my lifestyle. I remember feeling so guilty and ashamed that I couldn’t stand it. I wanted to be the perfect kid who my parents could say â€Å"yeah that’s my son† and not be ashamed about it. Thankfully I was introduced to the youth pastor, he basically saved my life. After talking with him for a couple months I started my recovery process. To start my recovery I had to accept who I was and where I had been. No more feeling sorry for myself, it was time to do something about it. I regularly attended AA and NA meetings and met people whose life story matched mine. I got a sponsor and was starting to feel better about myself and others around me. After my mind set was changed and I started to see things in a different light I started to look for a job. I looked everywhere and found nothing. This time I didn’t get depressed, I came to realize that not everything is going to be easy. Finally I got a call from Case Farms wanting me to come to work for them. I worked there for 20 months, long enough to get a nice car and move out of my parents’ house. A week after I moved out my roommate got busted with 3 ounces of pot and a pill bottle of Opana 40’s. I remember my mom telling me to come back and live with them that I was headed back into trouble. Unfortunately I wasn’t ready for the freedom of living with roommates. I thought I knew everything, that I could only drink or smoke just a little bit, a pill here and there wouldn’t hurt anything. Every week was a party with drugs and alcohol. With the partying came the trouble, I was locked up again. I lost my car, home, and job. Usually I would throw a pity party, but that’s not going to help. Today I have College, True Friends and my Sobriety. I couldn’t and wouldn’t put a price on any of these. Today I am TRULY happy.

Role Of Data Structures In Programming Languages

Role Of Data Structures In Programming Languages In computer science, a data structure is a particular way of storing and organizing data in a computer so that it can be used efficiently. It is also known as the logical or mathematical model of a particular organization of data. Data structures are generally based on the ability of a computer to fetch and store data at any place in its memory, specified by an address a bit string that can be itself stored in memory and manipulated by the program. Thus the record and array data structures are based on computing the addresses of data items with arithmetic operations; while the linked data structures are based on storing addresses of data items within the structure itself. Many data structures use both principles, sometimes combined in non-trivial ways Choice of particular data model depends on 2 considerations:- It must be rich enough in structure to mirror the actual relationships of the data in real world. Structure should be simple enough that one can effectively process the data when necessary. Classification of data structure Primitive and Non-primitive : primitive data structures are basic data structure and are directly operated upon machine instructions.Example Integer,character. Non-primitive data structures are derived data structure from the primitive data structures.Example Structure,union,array. Homogeneous and heterogeneous : In homogeneous data structures all the elements will be of same type.Example array. In heterogeneous data structure the elements are of different types.Example structure. Static and Dynamic data structures :In some data structures memory is allocated at the time of compilation such data structures are known as static data structures . If the allocation of memory is at run-time then such data structures are known as Dynamic data structures.Functions such as malloc, calloc,etc.. are used for run-time memory allocation. Linear and Non-linear data structures : Linear data structure maintain a linear relationship between its elements and whose elements form a sequence and every element in structure has unique predecessor and successor. Example array. Non-linear data structures does not maintain hierarichal relationship between the elements. Example tree Some Data Structures And Their role in Programming Languages Stack In computer science, a stack is a last in, first out (LIFO) data structure. History The stack was first proposed in 1955, and then patented in 1957, by the German Friedrich L. Bauer. The same concept was developed independently, at around the same time, by the Australian Charles Leonard Hamblin.. Operations on stacks A stack can have any abstract data type as an element, but is characterized by only two fundamental operations: push and pop. The push operation adds to the top of the list, hiding any items already on the stack, or initializing the stack if it is empty. The pop operation removes an item from the top of the list, and returns this value to the caller. A pop either reveals previously concealed items, or results in an empty list. Simple representation of a stack A stack is a restricted data structure, because only a small number of operations are performed on it. The nature of the pop and push operations also means that stack elements have a natural order. Elements are removed from the stack in the reverse order to the order of their addition: therefore, the lower elements are typically those that have been in the list the longest. In modern computer languages, the stack is usually implemented with more operations than just push and pop. Some implementations have a function which returns the current length of the stack. Another typical helper operation top (also known as peek) can return the current top element of the stack without removing it. Basic architecture of a stack Role of stacks in programming languages Languages such as Adobe PostScript are also designed around language-defined stacks that are directly visible to and manipulated by the programmer. C++s Standard Template Library provides a stack templated class which is restricted to only push/pop operations. Javas library contains a stack class that is a specialization of vectorthis could be considered a design flaw, since the inherited get() method from vector ignores the LIFO constraint of the stack. The simple model provided in a stack-oriented programming language allows expressions and programs to be interpreted simply and theoretically evaluated much more quickly, since no syntax analysis needs to be done, only lexical analysis. The way programs are written lends itself well to being interpreted by machines, which is why PostScript suits printers well for its use. However, the slightly artificial way of writing PostScript programs can result in an initial barrier to understanding the PostScript language and other stack-oriented programming languages. Whilst the capability of shadowing by overriding inbuilt and other definitions can make things difficult to debug and irresponsible usage of this feature can result in unpredictable behaviour it can make certain functionality much simpler. For example, in PostScript usage, the showpage operator can be overridden with a custom one that applies a certain style to the page, instead of having to define a custom operator or to repeat code to generate the style. Implementation In most high level languages, a stack can be easily implemented through an array. What identifies the data structure as a stack in either case is not the implementation but the interface: the user is only allowed to pop or push items onto the array or linked list, with few other helper operations. The following will demonstrate both implementations, using C. Array The array implementation aims to create an array where the first element (usually at the zero-offset) is the bottom. That is, array[0] is the first element pushed onto the stack and the last element popped off. The program must keep track of the size, or the length of the stack. The stack itself can therefore be effectively implemented as a two-element structure in C: typedef struct { int size; int items[STACKSIZE]; } STACK; The push() operation is used both to initialize the stack, and to store values to it. It is responsible for inserting (copying) the value into the ps->items[] array and for incrementing the element counter (ps->size). In a responsible C implementation, it is also necessary to check whether the array is already full to prevent an overrun. void push(STACK *ps, int x) { if (ps->size == STACKSIZE) { fputs(Error: stack overflown, stderr); abort(); } else ps->items[ps->size++] = x; } The pop() operation is responsible for removing a value from the stack, and decrementing the value of ps->size. A responsible C implementation will also need to check that the array is not already empty. int pop(STACK *ps) { if (ps->size == 0){ fputs(Error: stack underflown, stderr); abort(); } else return ps->items[ps->size]; } Procedures A procedure in a stack-based programming language is treated as a data object in its own right. In PostScript, procedures are denoted between { and }. For example, in PostScript syntax, { dup mul } represents an anonymous procedure to duplicate what is on the top of the stack and then multiply the result a squaring procedure. Since procedures are treated as simple data objects, we can define names with procedures, and when they are retrieved, they are executed directly. Dictionaries provide a means of controlling scoping, as well as storing of definitions. Since data objects are stored in the top-most dictionary, an unexpected capability arises quite naturally: when looking up a definition from a dictionary, the topmost dictionary is checked, then the next, and so on. If we define a procedure that has the same name as another already defined in a different dictionary, the local one will be called. Anatomy of some typical procedures Procedures often take arguments. They are handled by the procedure in a very specific way, different from that of other programming languages. Let us examine a Fibonacci number program in PostScript: /fib { dup dup 1 eq exch 0 eq or not { dup 1 sub fib exch 2 sub fib add } if } def We use a recursive definition, and do so on the stack. The Fibonacci number function takes one argument. We first test whether it is 1 or 0. Let us decompose each of the programs key steps, reflecting the stack. Assume we calculate F(4). stack: 4 dup stack: 4 4 dup stack: 4 4 4 1 eq stack: false 4 4 exch stack: 4 false 4 0 eq stack: false false 4 or stack: false 4 not stack: true 4 Since the expression evaluates to true, the inner procedure is evaluated. stack: 4 dup stack: 4 4 1 sub stack: 3 4 fib (we recurse here) stack: F(3) 4 exch stack: 4 F(3) 2 sub stack: 2 F(3) fib (we recurse here) stack: F(2) F(3) add stack: F(2)+F(3) which is the result we wanted. This procedure does not use named variables, purely the stack. We can create named variables by using the /a exch def construct. For example, {/n exch def n n mul} is a square procedure with a named variable n. Assume that /sq {/n exch def n n mul} def and 3 sq is called. Let us analyse this procedure. stack: 3 /n exch stack: /n 3 def stack: empty (it has been defined) n stack: 3 n stack: 3 3 mul stack: 9 which is the result we wanted. Expression evaluation and syntax parsing Calculators employing reverse Polish notation use a stack structure to hold values. Expressions can be represented in prefix, postfix or infix notations. Conversion from one form of the expression to another form may be accomplished using a stack. Many compilers use a stack for parsing the syntax of expressions, program blocks etc. before translating into low level code. Most of the programming languages are context free languages allowing them to be parsed with stack based machines. Example in C #include int main() { int a[100], i; printf(To pop enter -1n); for(i = 0;;) { printf(Push ); scanf(%d, a[i]); if(a[i] == -1) { if(i == 0) { printf(Underflown); } else { printf(pop = %dn, a[i]); } } else { i++; } } } Runtime memory management A number of programming languages are stack oriented, meaning they define most basic operations (adding two numbers, printing a character) as taking their arguments from the stack, and placing any return values back on the stack. For example, Postscript has a return stack and an operand stack, and also has a graphics state stack and a dictionary stack. Forth uses two stacks, one for argument passing and one for subroutine return addresses. The use of a return stack is extremely commonplace, but the somewhat unusual use of an argument stack for a human-readable programming language is the reason Forth is referred to as a stack based language. Almost all computer runtime memory environments use a special stack (the call stack) to hold information about procedure/function calling and nesting in order to switch to the context of the called function and restore to the caller function when the calling finishes. They follow a runtime protocol between caller and callee to save arguments and return value on the stack. Stacks are an important way of supporting nested or recursive function calls. This type of stack is used implicitly by the compiler to support CALL and RETURN statements (or their equivalents) and is not manipulated directly by the programmer. Some programming languages use the stack to store data that is local to a procedure. Space for local data items is allocated from the stack when the procedure is entered, and is deallocated when the procedure exits. The C programming language is typically implemented in this way. Using the same stack for both data and procedure calls has important security implications (see below) of which a programmer must be aware in order to avoid introducing serious security bugs into a program. Linked Lists In computer science, a linked list is a data structure that consists of a sequence of data records such that in each record there is a field that contains a reference(i.e., a link) to the next record in the sequence. A linked list whose nodes contain two fields: an integer value and a link to the next node Linked lists can be implemented in most languages. Languages such as Lisp and Scheme have the data structure built in, along with operations to access the linked list. Procedural languages, such as C, or object-oriented languages, such as C++ and JAVA, typically rely on mutable references to create linked lists. History Linked lists were developed in 1955-56 by Allen Newell, Cliff Shaw and Herbert Simon at RAND Corporation as the primary data structure for their Information Processing Language. Role of linked lists in programming languages Many programming languages such as Lisp and Scheme have singly linked lists built in. In many functional languages. In languages that support Abstract Data types or templates, linked list ADTs or templates are available for building linked lists. In other languages, linked lists are typically built using references together with records. Here is a complete example in C: #include /* for printf */ #include /* for malloc */ typedef struct node { int data; struct node *next; /* pointer to next element in list */ } LLIST; LLIST *list_add(LLIST **p, int i); void list_remove(LLIST **p); LLIST **list_search(LLIST **n, int i); void list_print(LLIST *n); LLIST *list_add(LLIST **p, int i) { if (p == NULL) return NULL; LLIST *n = malloc(sizeof(LLIST)); if (n == NULL) return NULL; n->next = *p; /* the previous element (*p) now becomes the next element */ *p = n; /* add new empty element to the front (head) of the list */ n->data = i; return *p; } void list_remove(LLIST **p) /* remove head */ { if (p != NULL *p != NULL) { LLIST *n = *p; *p = (*p)->next; free(n); } } LLIST **list_search(LLIST **n, int i) { if (n == NULL) return NULL; while (*n != NULL) { if ((*n)->data == i) { return n; } n = (*n)->next; } return NULL; } void list_print(LLIST *n) { if (n == NULL) { printf(list is emptyn); } while (n != NULL) { printf(print %p %p %dn, n, n->next, n->data); n = n->next; } } int main(void) { LLIST *n = NULL; list_add(n, 0); /* list: 0 */ list_add(n, 1); /* list: 1 0 */ list_add(n, 2); /* list: 2 1 0 */ list_add(n, 3); /* list: 3 2 1 0 */ list_add(n, 4); /* list: 4 3 2 1 0 */ list_print(n); list_remove(n); /* remove first (4) */ list_remove(n->next); /* remove new second (2) */ list_remove(list_search(n, 1)); /* remove cell containing 1 (first) */ list_remove(n->next); /* remove second to last node (0) */ list_remove(n); /* remove last (3) */ list_print(n); return 0; Queue A queue is a particular kind of collection in which the entities in the collection are kept in order and the principal (or only) operations on the collection are the addition of entities to the rear terminal position and removal of entities from the front terminal position. This makes the queue a First In First Out. In a FIFO data structure, the first element added to the queue will be the first one to be removed. This is equivalent to the requirement that whenever an element is added, all elements that were added before have to be removed before the new element can be invoked. A queue is an example of a linear data structure. Representation of a Queue Example C Program #include int main(){ int a[100],i,j; printf(To DQueue Enter -1n); for(i=0;;){ printf(NQueue ); scanf(%d,a[i]); if(a[i]==0) break; if(a[i]==-1){ a[i]=0; if(i==0){ printf(Wrongn); continue; } printf(DQueue = %dn,a[0]); for(j=0;j a[j]=a[j+1]; i; } else i++; } for(j=0;j printf(%d ,a[j]); return 0; }

The Purpose of Sati in Jane Eyre Essay -- Jane Eyre Essays

The general image of Sati and the reasoning that surrounded it filled the Western imagination with repulsion as well as admiration. In the nineteenth century, Westerners publishing diaries of their travels always included their experiences when viewing Sati. Although these travelers, usually men, watched with horror, they also admired the courage and the dignity of the women involved (Hawley 3). What was known in England of Sati was from the accounts of the colonial officials and travelers who witnessed it (Courtright 28). It would not surprise one to assume that Charlotte Bronte, in her drive for knowledge and her stand on women's freedom, would have taken an interest in such an act; and indeed she incorporates it in Jane Eyre. In 1829, the British government prohibited the act of Sati. Twenty years later, Charlotte Bronte presents a text in which she presents the "topos of feminism in imperialism" (Perera 80). With the use of the custom of Sati, Charlotte Bronte writes a novel whic h coveys the contrast between the east and the west, the old and the new, revealed sexuality and repressed sexuality. The two characters, Jane and Bertha, each represent a different region; while Bertha represents the East and the ancient, Jane represents the new and the modern. Dorothy K. Stein finds that Sati was a motif used for feminist discussions in Victorian England: [Sati] did not occur in England, but many manifestations of the attitudes and anxieties underlying the practice did. Nineteenth-century respectability in both England and India divided women into exalted and degraded classes, not only on basis of actual or imputed sexual behavior, but also on the basis of whether that behavior was at all times controlled and supervised, pref... ... the anger that she had expressed as a young girl, due to the fact that her society does not accept it. This anger that she once held inside is prevelant in Bertha's act. It is in the Red Room that Jane "became increasingly alive with bristling energy, feelings, and sensations, and with all sorts of terrifying amorphous matter and invisible phantoms" (Knapp 146). This igniting energy and flow of feelings, are very similar to those that Bertha realises at Thornfield. With the death of Bertha, Jane is now able to live with the man she loves. Bertha's death precedes a successful union between Rochester and Jane. When they are finally reunited, they are equal (Showalter 122). When Rochester and Jane finally get together, their relationship succeeds due to the fact that he has learned how it feels to be helpless and how to accept the help of a woman (Showalter 122). The Purpose of Sati in Jane Eyre Essay -- Jane Eyre Essays The general image of Sati and the reasoning that surrounded it filled the Western imagination with repulsion as well as admiration. In the nineteenth century, Westerners publishing diaries of their travels always included their experiences when viewing Sati. Although these travelers, usually men, watched with horror, they also admired the courage and the dignity of the women involved (Hawley 3). What was known in England of Sati was from the accounts of the colonial officials and travelers who witnessed it (Courtright 28). It would not surprise one to assume that Charlotte Bronte, in her drive for knowledge and her stand on women's freedom, would have taken an interest in such an act; and indeed she incorporates it in Jane Eyre. In 1829, the British government prohibited the act of Sati. Twenty years later, Charlotte Bronte presents a text in which she presents the "topos of feminism in imperialism" (Perera 80). With the use of the custom of Sati, Charlotte Bronte writes a novel whic h coveys the contrast between the east and the west, the old and the new, revealed sexuality and repressed sexuality. The two characters, Jane and Bertha, each represent a different region; while Bertha represents the East and the ancient, Jane represents the new and the modern. Dorothy K. Stein finds that Sati was a motif used for feminist discussions in Victorian England: [Sati] did not occur in England, but many manifestations of the attitudes and anxieties underlying the practice did. Nineteenth-century respectability in both England and India divided women into exalted and degraded classes, not only on basis of actual or imputed sexual behavior, but also on the basis of whether that behavior was at all times controlled and supervised, pref... ... the anger that she had expressed as a young girl, due to the fact that her society does not accept it. This anger that she once held inside is prevelant in Bertha's act. It is in the Red Room that Jane "became increasingly alive with bristling energy, feelings, and sensations, and with all sorts of terrifying amorphous matter and invisible phantoms" (Knapp 146). This igniting energy and flow of feelings, are very similar to those that Bertha realises at Thornfield. With the death of Bertha, Jane is now able to live with the man she loves. Bertha's death precedes a successful union between Rochester and Jane. When they are finally reunited, they are equal (Showalter 122). When Rochester and Jane finally get together, their relationship succeeds due to the fact that he has learned how it feels to be helpless and how to accept the help of a woman (Showalter 122).

Determining if Bagasse Contributes to Belize Electricity Resource :: Renewable Energy Environment Essays Papers

Determining if Bagasse Contributes to Belize Electricity Resource Graphics Missing Boyle states that â€Å"Bioenergy is the general term for energy derived from materials such as wood, straw, or animal waste, which were once living material†(p 106). The energy stored in a living organism even when it’s dead is known as biofuel. This fuel is capable of producing energy. A biomass used for creating bioenergy in Belize is bagasse. The bagasse that is produced in Belize is created by the Belize Sugar Industries. Agriculture is the backbone of the Belizean economy, and one of the most important crops is sugar cane. â€Å"In 1994 there were 2,165 cane farmers cultivating sugar cane in Belize, most in small farms in the Orange Walk and Corozal districts. This paper provides the reader with a brief insight on the sources of Belize’s electricity. Boyle states that â€Å"Increased recovery of wastes, combined with improved efficiency of conversion to electricity, could result in up to fifty GW of generating capacity from the sugar industry world wide† (p 119). Bagasse is the biomass remaining after sugar cane stalks are crushed to extract their juice. It is made up of fifty percent of fiber, forty-eight percent moisture, and two percent of sugar. The web encyclopedia states that â€Å"a sugar factory produces nearly thirty percent of bagasse out of its total crushing† (Wikipedia.org). Bagasse is often used as a primary fuel source for sugar mills, when burned in quantity; it produces sufficient heat energy to supply all the needs of a typical sugar mill, with energy to spare. Boyle states â€Å"The total energy content of the annual residues of the world’s two main crops, sugar and rice, is estimated as about 18Ej- similar to the total for temperate crops† (p 119). In Belize sugar cane and rice are two of the crops that produce capital for the country. However, Belize is still having a problem supplying its residents with a steady flow of electricity. The electrical power receive goes on an off from time to time. â€Å"During the dry season Mexico supplies more than fifty percent of Belize’s electricity† (Belize Electricity Limited). The rest of the electricity is produces through diesel generators and the dams. The dam’s supplies should produce about thirty percent of the electricity needed. When Mexico is in need of electricity they cut the electricity that they sell Belize and use it.

Margaret Floy Washburn

Margaret floy Washburn was a strong intellectual woman, the first woman to receive a Ph.D. in psychology, was born on July 25th in Harlem in New York City to parents who strongly encouraged intellectual pursuits. Washburn was notably a teacher, however she worked in many areas of psychology and it well-known for her contributions in theory development (including her motor theory), experimental work, animal behavior and professional service. Besides publishing over 200 scientific articles and reviews, she translated Wundt's Ethical Systems, 1897, and wrote two books: The Animal Mind, 1908; and Movement and Mental Imagery, 1916. Between 1905 and 1938, she published sixty-eight studies from the Vassar Psychological Laboratory-an undergraduate laboratory with 117 students as joint authors. The summers of 1913-1917 she taught psychology in the summer sessions at Columbia University; the spring of 1928 when, on her only sabbatical leave, she took a Mediterranean cruise; and the summers of 1929 and 1932 during which she traveled to England and Copenhagen. She was cooperating editor of the Psychological Bulletin, 1909-1915; associate editor of the Journal of Animal Behavior, 1911-1917; advisory editor of the Psychological Review, 1916-1930; and associate editor of the Journal of Comparative Psychology, 1921-1935. In 1921, she was president of the American Psychological Association; that same year, she was awarded a prize of $500 by the Edison Phonograph Company for the best research on the effects of music–a study of â€Å"The Emotional Effects of Instrumental Music† in collaboration with a colleague in the Department of Music at Vassar. In 1932, she was the U.S. delegate to the International Congress of Psychology in Copenhagen.

The Nuclear Fusion Reactor Engineering Essay

Before any probes are done on reexamining suited stuffs for a atomic merger reactor, a general thought of the atomic merger itself had to be introduced. Nuclear merger is the procedure that is straight opposite of atomic fission[ 1 ]. It is a procedure that fuses two or more atomic karyon together in organizing a larger karyon. The karyon involved here are usually the isotopes of H as it is most executable to pull out energy from the merger of these atoms. This procedure releases enormous sum of energy[ 2 ]and it is believed to hold an energy denseness of three to four times greater than the energy denseness of atomic fission which itself is a million times greater of the energy denseness of chemical reactions. Besides that, atomic merger produced much lesser radioactive waste. ( 1 ) Therefore, merger is a really possible power beginnings that are both economically executable and safe. Besides that, merger fuel is renewable, abundant in nature and cheap ( 2 ) . However, to day of the month, there is non a executable operating commercial atomic merger power works. There are, nevertheless, several experimental merger reactors that are operational but they are non sustainable and therefore non executable at the minute. Inarguably, merger reactor is highly hard to construct. Fusion procedure itself is difficult to accomplish under normal fortunes. Fusion fuses 2 or more positively-charged karyon together and it is non hard to conceive of that the energy required to convey the karyon together is really big as the repulsive force force between two indistinguishable charged atoms is reciprocally relative to the square of the distance of the atoms[ 3 ]( 3 ) . In order to originate a merger procedure, it is required to heat the mixture of deuterium-deuterium ( DD ) or deuterium-tritium[ 4 ]( DT ) up to a temperature of non lower than 100 million Kelvin for the karyon to come near adequate to each other and fuse. At these temperatures, the H will be in a wholly ionised province known as plasma. ( 4 ) Presently, there are two ways to accomplish the temperature necessary for the atomic merger to take topographic point. They are, viz. , magnetic parturiency method and inertial parturiency method. Magnetic parturiency merger reactor uses magnetic and electric Fieldss to restrict the isotopes and heat them up to the needed temperature. Inertial parturiency merger reactor, on the other manus, uses optical maser beam or ion beams to heat up the plasma. ( 5 ) For the intent of this literature reappraisal, the magnetic parturiency method will be investigated as this method is considered as more dependable and hence, it is more extremely developed ( 6 ) . Among the magnetic parturiency merger experimental curates, International Thermonuclear Experimental Reactor ( ITER ) will be peculiarly investigated together with Joint European Torus ( JET ) as the back uping probe. This is because ITER is the replacement of JET and ITER is presently the universes ‘ largest tokamak[ 5 ]atomic merger reactor which purpose to move as a operation and prolonging magnetic parturiency merger power works bring forthing net energy of 9 times the power its consume[ 6 ]( 7 ) . This is known to be the biggest graduated table of the merger reactor so far in the universe where the merger reactor will hold a really high energy generation and sustained burn. Upon the successful demonstration/experimentation in ITER, a all-out merger reactor will be able to be con structed on a larger graduated table based on the rule of ITER and benefits the world. Therefore, it is instead relevant to look into the potency of ITER in this reappraisal as if ITER is successfully built and demonstrated, a full graduated table power station that map wholly based on atomic merger can be produced. The building of ITER is still undergoing and expected to be completed in 2019.Objectives & A ; MotivationsThe aims of this literature reappraisal are to reexamine and take different stuffs that are suited in the building of the atomic merger reactor specific for ITER based on literatures available. In constructing a atomic merger reactor, different facets will hold to be considered and investigated as the standard for constructing a atomic merger power works is non easy satisfied. These will be farther discussed in this reappraisal. Therefore, in order to fulfill the different standards and different facets, different stuffs and their belongingss will hold to be consider ed before any choice is done. The motive of this literature reappraisal is based on the feasibleness and the limitless capablenesss of a atomic merger reactor. It is expected that non-renewable resources which are chiefly natural fossil fuels such as coal, crude oil and natural gas would be depleted by 2100. The present civilisation are mostly based on oil and gas in energy coevals and production and therefore by 2100, if alternate beginnings are non sought after, so the present civilisation would fall in due to the energy deficit ( 8 ) . Nuclear merger power works, a really promising energy beginning, is being investigated by the scientists and applied scientists as one of the alternate beginnings of energy upon depletion of fossil fuels. Nuclear merger power works would non potentially let go of C dioxide ( CO2 ) as pollutant to the ambiance therefore will non be lending to planetary heating. Fusion fuels are besides abundant in nature as heavy hydrogen and tritium can be easy obtained from saltwater and Li[ 7 ]easy. If all heavy hydrogen in one liter of H2O is used to blend with tritium, the energy produced by this will be tantamount to the combustion of 340 liters of gasoline ( 9 ) . Contrary to atomic fission, atomic merger leaves minimal or none of the radioactive waste. Contrary to atomic fission as good, the atomic merger power works have no potency of meeting a meltdown[ 8 ]at all and therefore will non do black consequence to the environing environment. For all these advantages, joint attempts from developed states all round the universe are sing atomic merger power works as a possible energy providing and therefore different constructs, proposals and designs had been proposed in order to construct a functional merger reactor. Therefore, it is non difficult to conceive of that the motive of the subject â€Å" Advanced Materials for Fusion Reactors † is wholly based on the fact that merger power works would be to a great extent dependent on in the hereafter if it is succeeded been developed.Components of Nuclear Fusion Reactors2.1 IntroductionThis literature reappraisal will get down with a general debut of the constituents of a magnetic parturiency atomic merger power works and how the power works plants, so will be divided into subdivisions look intoing the major proficient challenges of some constituents inside the reactor. Upon the proficient challenges are determined, the focal point of this reappraisal will be on choosing the stuff belongingss that are suited for the job an d therefore the appropriate stuff measure uping for the peculiar belongings.Magnetic Confinement Fusion Power PlantThere are presently different methods in accomplishing the parturiency of the hot plasma magnetically. Among the most recent and widely method used is Tokamak whereby ITER itself is based on the construct of Tokamak ( 10 ) . This might be due to the fact the Tokamak is the most well-developed magnetic parturiency system at the present phase. Illustration of the magnetic parturiency merger construct Figure: Conventional Diagram of a Tokamak ( 11 ) Figure: Conventional Diagram of the Tokamak in ITER ( 12 ) Figure 1 and Figure 2 both show the conventional diagrams of how a Tokamak will look like. The vacuity vas[ 9 ]on Figure 2 will incorporate plasma and will be the topographic point where the merger reaction will take topographic point. The cover faculty will be screening the vacuity vas from the high-energy neutron and bring forthing tritium for farther merger procedure ( 13 ) . The toroidal field spiral and poloidal field spiral[ 10 ]are responsible to make a magnetic field in perpendicular and horizontal way to restrict the hot plasma and maintain the plasma off from the wall ( 14 ) . The cardinal solenoid will on the other manus bring on the current in the fuel that will ionize the H fuel organizing the plasma, heat up the plasma to about one tierce of the temperature required by merger[ 11 ]( 14 ) and besides shape the magnetic field in the divertor part ( 15 ) . The divertor maps as an ‘exhaust ‘ to pull out heat from the merger reaction every bit good as the waste m erchandise – He ( 16 ) . As mentioned earlier, the merger requires a temperature of over 150 million Kelvin, and hence, the warming produced by plasma current is deficient to heat up the plasma. Therefore, external warming[ 12 ]will be required to heat up the temperature further to the desired 100 million Kelvin. As ITER is an experimental reactor to look into the possibility of a merger reactor, hence, there are besides extended nosologies systems that are installed on the Tokamak to analyze the belongingss of the plasma and the existent perfomance of the ITER ( 18 ) . Finally, the cryostat is responsible to incorporate and back up the whole Tokamak construction. ITER will non be able fo map with the whole Tokamak system entirely. It needs external system to back up it as a functional reactor. As explained above, the plasma will be contained in a vacuity vas and therefore a vacuity system will be needed to pump air out of the vacuity vas to make a status of highly low denseness and force per unit area[ 13 ]( 19 ) . Contrary to atomic fission, atomic merger reaction will merely happen one in a clip inside the tokamak. This means that certain sum of mass of H fuel[ 14 ]is injected into the vacuity vessels one at a clip and let the merger reaction to take topographic point. Therefore, a fuelling system must be used here. Due to the fact that the force per unit area inside the vas is really low and the fuel involved is really little, the merger reaction in ITER clearly will non do any lay waste toing consequence to the environment or the reactor once the reactor goes incorrectly. As the ITER is runing on a really big graduated table, much larger compared to its old version, hence, the magnets[ 15 ]will be heated up really rapidly and therefore is required to be cooled utilizing cryogenic engineering ( 21 ) . Distant handling is besides required in the ITER as it is impossible to make any fix or maintainance in the ITER while the reactor is active ( 22 ) . Like any other power works, ITER will necessitate a chilling system that will be responsible to chill or instead extract any heat released in the procedure ( 23 ) . For ITER, the heat will be dissipated to the milieus as it is an experimental reactor that are non responsible to bring forth electricity. For a real-life reactor, the heat extracted will be used to bring forth steam to turn the turbine which will in bend generate electricity. This would be the precisely same rule as a real-life power reactor. Ultimately, a power supply is required for ITER as it is impossible to bring forth any end product power without initial input power for a merger power works. These will be the chief constituents of a merger reactor. Each constituent will subsequently be investigated seperately together with the pick of stuff for the constituent. The general working rule behind a merger reactor like ITER will be as follow: First, all drosss and air are pump out of the vacuity vass. Fusion fuel will so be allowed to come in the reactor through the fuelling system. The cardinal solenoid will so bring on current to the fuel and inonize it into plasma while heating up the plasma. Simultaneously, the toroidal field spiral and poloidal field spiral will be activated and they will bring forth magnetic gield that will steer the plasma in weaving around the vacuity vas. External warming will farther heat up the temperature of the plasma up to around 150 1000000s Kelvin. The merger procedure will so get down. High-energy neutron will be released and absorbed into the cover. The energy produced by the neutron and the merger reaction will so be absorbed by the go arounding chilling H2O which will so disperse the heat consequently. Any merchandise that are left behind will so be exitting through the divertor.Material Challenges Presented in a Nuclear Fusion ReactorThere are several challenges that had to be faced in constructing a Tokamak type merger reactor. In fact, the challenges can be largely demonstrated on constructing an experimental reactor such as ITER. First and first, the neutron released by the merger reaction has a really high energy of about 14 MeV. Even fission reaction will merely let go of neutron of energy 2 MeV. Therefore, appropriate stuffs must be selected to see such neutron flux and barrage. Such barrage on any stuff will decidedly damage the stuff and induces radiation ( 24 ) . Besides neutron irradiation, the stuff must besides subject to gamma radiation flux and impersonal atom fluxes. Though non obvious, but the nosologies system in the ITER will besides necessitate to defy such rough environment in the vacuity vass ( 18 ) . The cover wall will function multiple intents every bit good. The cover wall needs to be able to bring forth tritium when interacting with the neutron release by merger reaction to farther fuel tritium for following merger ( 25 ) . The first wall of the plasma chamber will necessitate to confront the highly high temperature plasma every bit good. Therefore, it will be subjected to electromagnetic moving ridges of high energy which chiefly are X-rays ( 2 ) and highly high heat burden. Due to extreme heat flux, there might be hazard that stuffs will be evaporated from the divertor and being deposited on the plasma confronting surface ( 26 ) . As the merger power works like ITER use magnetisms to restrict the plasma, it is besides of import to observe that the magnets used in the power works must be of high efficiency. It is suggested that the magnets use here should be ace conducting as the power consumed by a normal magnet to restrict such plasma will be really immense ( 2 ) . As the divertor is responsible to wash up the byproduct of merger, it will hold to digest high heat tonss[ 16 ]and supply the shielding for neutron barrage every bit good ( 27 ) . The cardinal solenoid and poloidal field spirals will bring on a big and fluctuating magnetic field of about 1T at the first wall and 0.2T at the cryostat wall ( 26 ) . The operation of ITER is besides the largest to day of the month which it will necessitate to keep a steady-state operation of more than 1 hr. With that in head, this will be the harshest environment that is yet to be experienced by bing stuffs. Before any choices are done, the readers of this literature reappraisal are advised that the choice of all stuffs are done based on the diaries and the studies done by the ITER forces and applied scientists and their suitableness remains to be confirmed. There are besides some company being suggested by the ITER organisations that are specializing in production of different stuffs for each constituent. Readers that are interested can look up the company. The general choice of the stuffs for cardinal constituents had already been summarised in the Table 4 of Appendix. Full design specification of ITER can besides be viewed at ( 28 ) .General Structural MaterialThe general structural stuff here is the stuff for the in-vessel constituents[ 17 ], the vacuity vass and cryostat. There is a general understanding that the structural stuffs in a merger atomic power works should non bring forth any radioactive merchandises that have a long life clip and the ephemeral radioactive merchandise on the other manus should non do unacceptable safety effects. This is to forestall the volatile radioactive merchandises that might be released into the environment in the event of accidents and to understate the consequence of high decay heat[ 18 ]. This in footings regulations out the possibility of utilizing several debasing elements for steels in ITER. These include Nb, Mo, Co and Ni ( 29 ) . For ITER, the most suited structural stuff would be unstained steel ( SS ) . The class selected here would be type 316L ( N ) -IGX[ 19 ]austenitic SS. The steel selected here had many belongingss that are first-class for the ITER constructions. Among the belongingss are equal mechanical belongingss, good opposition to corrosion, able to be welded, forged, and casted[ 20 ], industrially available can be easy manufactured, much less sensitive to radiation embrittlement ( 32 ) . The austenitic SS here is besides well-known for its extended database and acceptable radiation harm opposition. Although some lessening in ductileness might happen due to irradiation at temperature of 275-375A °C, but this is sufficient for ITER operation ( 32 ) . The austenitic SS proposed for cryostat would be 304L. Although the steel is being selected, there are certain demands for the contents of the steel that must be satisfied. For a merger reactor, activated Co ( Co ) is really important in lending radiation dosage. Therefore, the decrease of Co content in all the chromium steel steel used to 0.05 % can cut down the activation of the constituents ( 30 ) . Besides Co, Nb would bring forth durable radioisotopes that will post a job in waste direction and decommissioning. For 316L ( N ) -IG SS, Nb is present as hint component. It is of import to cut down Nb content in the steel to 0.01 % ( 30 ) . Although the stuff for shielding of the chief vacuity vass will be SS 316L ( N ) -IG, the shielding of the primary vass[ 21 ]can be done utilizing SS 30467 with 2 % B[ 22 ]and the stuff for ferromagnetic shielding[ 23 ]can be done utilizing SS 430 ( 31 ) in the vacuity vas. Besides the general construction, the stuff of nickel-based-alloy keys and bolts[ 24 ]used must be investigated here every bit good. The general stuff for cardinal and bolts would be Inconel 718 ( 30 ) . The pick of stuff here is due to the fact that Inconel 718 has high strength, stamina and weariness opposition and it is widely used in atomic industry and commercially available ( 32 ) . The expected neutron irradiation experienced by the bolt would be 0.5 dpa, under such status, the strength of Inconel 718 will increase together with a little lessening in ductileness but it will non impact the overall constituent unity over its life-time. However, the low coefficient of thermic enlargement of Inconel 718 must be taken into consideration ( 33 ) .The BlanketAs mentioned in Section 2.3, the cover is a really of import constituent in ITER. The cover will hold to fulfill the undermentioned demand: To defy the high heat burden due to its close contact with the plasma. To retrieve tritium and to engender tritium fuel for new merger reaction. To supply thermic screening to the vas. To supply screening from neutron barrage and bring forth a little sum of radioactive waste. To retrieve heat by provide sufficient cooling/heat money changers. To protect the magnet spiral from the atomic radiation. In a merger reactor like ITER, the cover system is farther divided into 2 parts, viz. the first wall as the first bed of protection, and the cover as the shielding and tritium genteelness. Most of the neutron produced by the merger will go through through the first wall and are absorbed in the cover and the shield ( 2 ) . Therefore, the cover will be responsible to capture these neutrons while pull outing their energy and besides breed new tritium to replace tritium used in the merger procedure. The heat sink besides exists here to let heat exchange to take topographic point. On the other manus, the first wall will supply screening for tritium and in the ITER, it will be the most tritium-contaminated device ( 27 ) . The first wall is besides responsible to screen the constituent behind it from the direct contact with plasma. Therefore, the first wall should be able to defy the corrosion resulted from the plasma when they are in contact with one another. Besides, for the intent of eas y care, the cover wall is modular. The full cover parametric quantity is listed in Table 1 as shown below: Table: Blanket Parameter for ITER ( 500 MW merger reactor ) ( 27 ) Beryllium ( Be ) is the first pick of stuff for the tiles of the first wall. This is because of the undermentioned belongingss: low plasma taint, ability to defy big figure of perpendicular supplanting events ( 34 ) , low radiative power losingss, good O gettering provided that heat burden is non sufficient to vaporize Be, low tritium stock list[ 25 ]( 35 ) , absence of chemical spluttering, low atomic figure, the possibility of in situ fix of the harm faculties by plasma spray, first-class neutron and energy generation. The class of Beryllium selected is S-65C VHP due to its low content of metallic dross, high neutron irradiation opposition, high thermic weariness opposition, high elevated temperature ductileness and low cycling thermic weariness ( 30 ) . However, the chief job of Be are toxicity and handiness ( 25 ) . The toxicity will non be an issue[ 26 ]here and sing the handiness, Be can ever be reprocessed upon the terminal of the life clip of the reactor for new reactor. There is available engineering and processs to manage Be at current minute and the reprocessing is executable. The existent ingestion of Be will non be much of a concern. Other than that, there is a chief concern that the brickle break of Be is noticed when it is tested under low irradiation temperature[ 27 ]( 30 ) . Such embrittlement at low temperature could take to the brickle failure of the faculties. Additional R & A ; D is needed to analyze the break mechanics of S-65C VHP. It is besides noticed that Be is merely acceptable for a low-duty rhythm machine[ 28 ]such as ITER ( 34 ) . In decision, the first wall panels and the bulk of the internal Tokamak surface will be covered by Be. Their occupation is simple, to defy and reassign the heat from the plasma t o the chilling system via heat sink. In fact, for ITER and JET, there is already a company in Finland known as DIARC-Technology Inc. that is specialised in supplying the plasma coating ( 36 ) . It is of import besides to observe that ceramic complexs such as silicon-carbide ( SiC ) fibre-reinforced SiC-matrix had been conveying to the concern of the applied scientists. Ceramic complexs are of peculiar involvement due to the fact that the degree of radiation induced here is much lower[ 29 ]than that of a metallic construction ( 2 ) . However, with the high pay-off, it comes with high hazard. The high pay-off is evidently the first-class safety of SiC due to its highly low induced radiation, whereas the high hazard is uncertainness of the SiC public presentation and belongingss when it is subjected to irradiation under high temperature ( 37 ) . Table 2 is attached naming the cardinal constituents required if the new-generation SiC is chosen to be used as the structural stuff and the nucleus stuff[ 30 ]in the power works. Several issues need to be raised before sing SiC: the cost of fiction of the complexs, the connection method, low thermic conduction under irradiation at hig h temperature, and the maximal operating temperature around the cover and the constructions of the works. SiC had been considered in assorted power works designs such as TAURO, DREAM, and AIRES-AT. However, it is non being considered as the chief structural stuff in ITER due to its unpredictable public presentation. Further R & A ; D might be required to develop SiC into a high public presentation merger power works nucleus stuff with safety advantages. Detailed plants can be referred at ( 37 ) . Table: Suggested Parameters for a SiC-based Fusion Power Plant ( 37 ) Besides the screening consequence by the first wall, cover besides act as a tritium breeder. The suited stuff here would be Li or Li compounds as it will absorb the high-energy neutron and release tritium as shown in Equation 1 and 2 below ( 2 ) . The first reaction will devour energy of 2.87 MeV but it will bring forth an extra neutron that can undergo farther reaction to engender tritium. The 2nd reaction will take to an energy production of 4.8 MeV. The enrichment of the Li in the compounds depends on the type of power reactor. Equation.Equation Among the Li compounds, Lithium zirconate ( Li2ZrO3 ) is preferred as the genteelness cover due to its good irradiation stableness, its good compatibility with steel, low tritium keeping at low temperature, and insensitiveness to wet ( 31 ) . The Li here can be enriched to 90 % to heighten the genteelness of tritium. The genteelness cover here will be in the signifier of pebbles. The proposed agreement of the breeder would be holding 2-3 breeder zones embedded in Be tiles giving the net tritium genteelness ratio of greater than 0.8 ( 31 ) . Ultimately, the dramatis personae steel can be used as the concluding shielding portion of the first wall ( 30 ) . In the design of ITER, a high thermic conduction stuff, known as heat sink, will be placed in between the armor and the chilling channels with its chief fuction being reassigning the heat fluxes and energy extracted by the first wall to the coolants, cut downing the thermic emphasiss undergone by the protecting constituent expeditiously. Therefore, for the heat sink, the Cu ( Cu ) metal would be preferred due to its high thermic conduction. The class selected here would be CuCrZr metal. However, the belongingss of CuCrZr alloy depend extremely on its thermomechanical intervention and fabrication procedure. Provided the fabrication procedure will impact the belongingss minimally, CuCrZr will hold high break stamina at high temperature. Besides CuCrZr is a weldable stuff and it is widely available in the market. Although the metal will exhibit radiation hardening, lessening in ductileness, and loss of the ability for work indurating at low neutron irradiation temperature, the public pr esentation of the metal still meets ITER ‘s standards ( 32 ) . However, this CuCrZr metal will be differ from the standard one in footings of its content. For the standard metal, the Cr contents would change from 0.4 % to 1.5 % and Zr contents would change from 0.03 % to 0.25 % , nevertheless, the metal used in ITER would utilize a much narrower scope[ 31 ]. The ground of restricting Cr in much narrower scope is to cut down the possibility of formation of harsh Cr precipitates which will affection the radiation opposition. Zr on the other manus will do hardening of metal and influences the recrystallization temperature and the ageing clip. The restriction of O in the metal to less than 0.002 % and the entire sum of drosss to less than 0.03 % is besides needed for a better embrittlement opposition ( 30 ) . Besides the stuffs for each constituent, the stuff of the articulations of heat sink to the cover faculties and to the overall construction needs to be considered every bit good. To bond the heat sink onto the armour stuffs, a procedure known as Hot Isostatic Pressing ( HIP ) is introduced ( 36 ) . HIP bonding is a type of fabricating procedure that will adhere metals together while cut downing the porousness of the metals and it will ensue in tight geometrical tolerance. The status of the HIP of the two stuffs is furthered explain in ( 32 ) and ( 31 ) . In fact, the articulations of Be/Cu and Cu/SS had been successfully tested under heat flux up to 12 MW/m2 under 4500 rhythms ( 31 ) . In UK, there is an technology company known as AMEC worked with the bonding of the hot sink to the Be foremost wall. Detailss for HIP fall ining engineerings can be viewed at ( 31 ) , ( 38 ) and ( 39 ) . Figure: Blanket Flexible Support Attachment ( 32 ) There is another stuff concern here for the covers attachment. As shown in Figure 3, it is necessary to attach the cover to the vacuity vass. The ITER design is such that a flexible cartridge is screwed onto the vas and bolted through the entree hole in the cover faculty. The stuff here needs to fulfill the undermentioned standards: high strength, must be able to defy high axial burden forces and let elastic distortion during flexing. The pick of stuff here would be titanium alloy – Ti-6Al-4V ( 32 ) . This stuff is widely used and so its database is instead complete. The stuff itself besides has low Young modulus ( 31 ) . The ductileness of the stuff is non capable to any alterations as the dosage it will be exposed to as the protection from the cover faculty itself minimise the barrage of the energetic neutron onto the cartridge.Divertorshypertext transfer protocol: //www.iter.org/doc/www/content/com/Lists/WebsiteText/Attachments/15/divertor_4.jpg Figure: The perpendicular marks and the dome of the ITER divertor ( 16 ) For the armour tiles of the divertor baffle countries[ 32 ], sintered wolfram ( W ) in the cold worked and stress relieved conditions will be a great pick. W has low eroding rate[ 33 ]as compared to Be and C, low tritium keeping ( 32 ) , and longer life-time ( 16 ) . However, the disadvantages of utilizing wolframs are such that it will do a big radiative power loss and might run if it is subjected to abnormal high extremum burden. Therefore, for countries that exposed to high thermic flux[ 34 ], W is non suited. Therefore, for such countries, carbon-fibre-reinforced C complex ( CFC ) will be used due to its high thermic conduction to have the higher heat fluxes. However, the usage of CFC must be minimised and restricted to the country mentioned above merely because it will gnaw chemically and retain tritium. Besides that, there are some belongingss alterations of CFC under neutron irradiation that must be noted. At low irradiation temperature[ 35 ], the thermic conduction of CFC might be 3-5 times lower than the unirradiated CFC. The lessening in the thermic conduction might take to a rise in thermic eroding ( 30 ) . However, the addition in eroding is still allowable within the life-time of the constituent. Detailss of fall ining engineerings for CFC are discussed at ( 38 ) . In short, the stuff choice for divertor baffles and dome would be W and CFC at the work stoppage points chiefly the perpendicular marks ( 36 ) . As there are advantages and disadvantages of utilizing CFC and W, another suggestion for the divertor stuff is using a coating of W on CFC. This might show a good solution and cut down cost but it is subjected to research. However, there is an issue with this solution. The thermic enlargement of CFC might post the job to the divertor itself. This can farther be overcome by lodging a thin bed[ 36 ]of Molybdenum ( Mo ) as intermediate. This had been tested by heating up to 2000 A °C without the failure of the constituents ( 36 ) . Full makings of wolfram coating is reported in ( 40 ) . For the overall cassette organic structure of the divertor, SS 316 L ( N ) -IG is selected as stuff for fabricating through cast/HIP or pulverization HIP method. The elaborate survey of the plasma confronting stuff[ 37 ]and its experimental consequences together with the belongingss of articulation can be found at ( 41 )NosologiesIn existent merger reactor, the nosologies system might non be that extended as compared to the experimental reactor like ITER, but the being of nosologies system and diagnostic device inside the vacuity vas is ineluctable in order to analyze the plasma parametric quantities and the wall parametric quantities. Like all other in-vessels constituents, nosologies system will be subjected to high neutron flux and high radiation ( 32 ) . The stuffs used for nosologies system today ‘s experiment experience really small radiation, hence new stuffs must be proposed to be used in the risky environment like ITER. To give an thought of how rough is the environment that the nosologies system will see, Table 3 is shown in Appendix for farther mention. In choosing the stuff for the nosologies system, the cardinal choice standards would be radiation opposition. ITER would utilize fibre ocular transmittal near the plasma. During merger, a few meters of overseas telegram will be subjected to important radiation flux, hence, radiation opposition for optical wavelengths would be a consideration. In the IR and the seeable part of electromagnetic moving ridges[ 38 ], stuffs such as silicon oxides fibre with optimized fluorine-doped nucleus will supply dependable fiber-optic transmittal in the high-radiation vacuity vass ( 42 ) . However, it is non advisable to utilize optical fiber inside the vacuity vass because embrittlement may happen at high degree of irradiation and in the vacuity vass and the fiber in the vacuity vas will hold to work outside its preferable part of electromagnetic moving ridges as mentioned above. In order to go through the fiber into the vacuity vass, a more optimal stuff must be searched for. In order to go throug h the wire into the vacuity vas into the ITER device, a multi nucleus ( 57 fibers ) device that can be remotely handled is being developed. For insulating ceramics[ 39 ]of wire, the wire and the magnetic spiral, it is non a large job as there is assuring campaigners exist. Single crystal and polycrystal aluminum oxide ( Al2O3 ) can be considered as the insulating ceramics with careful pick of operating temperature scope ( 32 ) . In fact, Al2O3 will be used throughout for the electrical dielectric of the constituents around the ITER. It is non expected that the stuff will see important debasement of its strength over its life-time in the reactor. However, it is of import to observe the effects of irradiation on the electrical belongingss of the electrical constituents and the dielectric stuff. Two of the of import physical consequence would be radiation-induced conduction ( RIC ) and radiation induced electrical debasement ( RIED ) ( 26 ) . The RIC consequence for the campaigner stuffs had been shown in Table 6 in Appendix. However, overall, there is no serious debasement of the belongingss that might impact the public pr esentation and the safety of the stuffs provided the careful choice of stuffs. For RIED, nevertheless, it is still non being understood yet, hence more R & A ; D must be done ( 43 ) . Mineral insulating ( MI ) overseas telegrams[ 40 ]are extremely immune to radiation every bit good and are widely used in atomic reactor ( 44 ) . Therefore MI overseas telegrams will be a suited campaigner for the magnetic spiral and overseas telegrams. The Windowss used in the nosologies system is besides subjected to radiation. The belongingss that are of concern when choosing the diagnostic window is radiation induced soaking up ( 26 ) . Sapphire can be considered as better stuffs for the Windowss when subjected to shorter wavelength as compared to fused silicon oxide due to its tolerance to gamma radiation[ 41 ]. However, diamond will be as the best stuff for nosologies Windowss as it can digest radiation from GHz part to IR part ( 32 ) . For plasma-facing optical component ( mirrors and reflectors ) , the mirrors will frequently confront with the job of deposition of scoured stuffs from other in-vessel constituents and subjected to intense radiation. Careful pick of mirror stuff must be made. For majority metal mirrors, the radiation and neutron might non present a serious menace although excess attention still hold to be taken to cover with the atomic warming ( 26 ) . The pick of stuff for majority metal mirrors can be Cu, W, Mo, SS or Al. For dielectric coated mirror, neutron irradiation can take to flaking and vesiculation and will damage the mirror. The similar job will happen with the multi-layer mirrors. Therefore, choice must be careful. Suggested stuffs for dielectric coated mirror are HfO2/SiO2 and TiO2/SiO2 ( 32 ) . For inorganic X-ray crystal, it will be unaffected by the neutron irradiation. Suggested stuff is graphite ( 43 ) . Bolometer is a device mensurating the power of electromagnetic radiation and therefore will be installed in ITER every bit good. Bolometer of stuff made of isinglass as the substrate and gold as meander used for JET is possible to be reintroduced in ITER as the testing of the bolometer is the JET reactor is non a job. However, the gold meander thought to hold been broken due to the transubstantiation and substrate puffiness ( 43 ) . Therefore, for ITER, alternate meander such as Pt will be considered. But the design for ITER at the minute still keep Mica as substrate and Gold as meander ( 32 ) , though more R & A ; D had been planned look intoing the possible substrate stuffs such as Al2O3, aluminum nitride ( AIN ) , CVD diamond, KU1 fused silicon oxide and Si3N4.MagnetsThe magnets, without uncertainties, are the most of import and critical component in a magnetic parturiency atomic merger power works. The spirals must be designed to accomplish superior public presentation in footing s of the current denseness and field at minimal cost without compromising the quality of the magnets ( 45 ) . Therefore, the choice of stuffs for the magnet remains a really important portion in a reactor like ITER. The pick of the magnets will be depend on the field, temperature and current. Among the suited stuffs that can be used to construct the superconductor magnets here are Nb3Sn and NiTi. Nb3Sn has a higher critical temperature and field than its opposition. However, NiTi is more malleable and the twist techniques are more conventional ( 32 ) . For cardinal solenoid and toroidal field spiral, the selected stuff is Nb3Sn because it allows these spirals to run at 12 T while being cooled by the supercritical He. Harmonizing to ( 45 ) , Nb3Sn is the lone stuff that is capable of supplying 12 T which is far more beyond that other commercially available superconductor but it will hold to undergo complex fabrication procedure which will be explained in the undermentioned reappraisal. For ITER, it is of import besides to guarantee that there is minimal hysteresis loss with high current denseness. NbTi will be selected for poloidal field spiral ( 46 ) . The construction of the toroidal field and the cardinal solenoid will be a lesion in a form of battercake and utilize the engineering ‘wind, react and transportation ‘ while for the construction of poloidal field spiral, the construction will be like dual battercakes ( 12 ) . Figure: Typical Agreement of Conductors Strand and Filaments ( 32 ) The music director jacket plays an of import structural function for the magnets. For poloidal field spiral, the fiction of the jacket will be an bulge subdivision which is assembled by butt welding. As a consequences, the tensile emphasis will rule here and 316L ( N ) austenitic steel is selected as the stuff for polodial field spiral music director jacket ( 12 ) . On the other manus, cardinal solenoid is extremely stressed and it will necessitate to rhythm twice per pulsation from 0 to 13T magnetic field. Therefore, the stuff for cardinal solenoid music director jacket demands to hold high output strength and high weariness opposition and have to be co-reacted through Nb3Sn heat intervention[ 42 ]. Titanium will be preferred stuff for cardinal solenoid music director jacket because it is preferred for a co-reacted jacket holding a thermic contraction coefficient that is near to that of Nb3Sn strands as the strand superconducting belongingss will be decreased by strain ( 32 ) . Besides Ti, Incoloy 908 will undergo precipitation indurating during co-reaction holding a high weariness opposition and is besides a suited stuff for the jacket music director. However, it is excess sensitive to emphasize accelerated grain boundary oxidization[ 43 ]( SAGBO ) which will ensue in O demands during the heat intervention procedure ( 32 ) and hence the heat i ntervention furnace must be controlled to keep low concentrations of O ( 47 ) . It is besides indispensable that the music director will be insulated with glass-kapton when being heat treated to guarantee good insularity ( 45 ) . Therefore, finally, Incoloy 908 will be used to envelop the overseas telegram although it is new and need to be co-reacted with Nb3Sn under carefully specified conditions ( 48 ) . Figure 7 in Appendix can be referred to see the overall cardinal solenoid clearly. The item fabrication procedure and weaving engineering is further discussed at ( 48 ) . For toroidal field spiral, the music director jacket can be built from modified 316LN[ 44 ]steel tubing which has a higher thermic contraction during co-reaction and acceptable break stamina. As such the big mechanical burdens on the toroidal filed spiral can be overcome by edifice of the thick steel spiral instances around the superconductors weaving battalion. These instances will see high emphasis locally with a cyclic constituent due to its interaction with poroidal field spiral ( 32 ) . The insularity of toroidal field spiral will utilize the same stuff as cardinal solenoid which is glass-kapton tape. The item fabrication procedure and weaving procedure of toroidal field spiral can be explored at ( 49 ) . Furthermore, to forestall fast fatigue cleft growing in steel due to the temperature of 4 K coolant of liquid He go throughing through it[ 45 ], a to the full established steel of category 316 must be used. Just to accomplish this intent, a particular category of strengthened austenitic steel have been defined. They are given name as EK1, EC1, JJ1, and JK2 during the R & A ; D of ITER. These steel are formed by increasing its N content which will increase the strength of the stuff and increasing its manganese content to increase nitrogen solubility in order to keep a good welding. EK1 and JJ1 will be used to beef up the interior leg basic elements[ 46 ]of toroidal field spiral instance and articulations around the spiral and intercoil construction. JK2 will be used to reenforce the Ti cardinal solenoid music director jacket. EC1 is used to beef up outer leg basic elements[ 47 ]of toroidal field spiral. ( 32 )External Heatinghypertext transfer protocol: //www.iter.org/img/sq-640-85/ww w/content/com/Lists/WebsiteText/Attachments/17/heating_4.jpg Figure: Proposed External Heating of ITER ( 17 ) The heating beginning of the merger power reactor must non be neglected every bit good in footings of stuff choice. This is because the external warming will be responsible to supply more than 10 % of the 50 MW input power of the merger power works. It is besides responsible to heat the temperature of the plasma up to the desired 150 million Kelvin. As mentioned in Section 2.1, there will be 2 beginnings of electromagnetic moving ridges that are responsible to heat up the plasma. Therefore, it is required to construct 2 radio-frequency aerial. The aerial will hold to prolong long continuance of plasma operation utilizing the high powers with the aid of Lower Hybrid Passive Active Multi-juntion ( PAM ) microwave launcher[ 48 ]. For ITER, there is already a pre-installed aerial. Therefore, another aerial had to be built from the abrasion and this might move as the mention for building of future merger power works ( 36 ) . The chief stuff challenge here is to manufacture a multi-waveguide construction for the moving ridge transmittal from the electromagnetic moving ridge generator to the vacuity vas. In ITER, the construction will necessitate the machining of Cu to the chromium steel steel by brazing. The fabrication of such devices face with a figure of proficient troubles which the chief troubles being the detonation bonding between the Cu and chromium steel steel for dual and ternary beds of stuff would deformed by the residuary internal emphasis after heat intervention and machining. Therefore, a particular brazing tool is required. A Gallic company, CEA, had proposed a engineering whereby the brazing tool allows commanding of the constituent contact force per unit area at high temperature under vacuity. ( 36 ) However, there is another type of electromagnetic moving ridge warming in ITER. It functions like a microwave with the lone difference being the microwave operates at megawatt power. It is called Electron Cyclotron Resonance Heating ( ECRH ) and it will heats the negatron utilizing an electromagnetic moving ridge of 170 GHz, the resonating frequence of the negatrons and the negatrons will so reassign its energy to the plasma ( 17 ) . Among the designs, there is a design that requires a â€Å" square corrugated wave guide † . If such wave guides is needed, rapid chilling will be required every bit good as the power transmitted by the moving ridge is high[ 49 ]. Such device does non presently exist and therefore will post a stuff challenge of holding a wave guide that is corrugated with high tolerance and welded under vacuity tight status ( 36 ) . However, there is presently a paradigm of wave guide being tested at such high power and the consequence is really satisfactory. The company involved here is the Heeze Mechanics. Due to a design alteration of ITER, a wave guide as mentioned above might non be required for the minute ( 36 ) . Therefore, the suited stuff for such wave guide is non investigated here.Remote HandlingRemote handling is highly of import in ITER as explained in Section 2.1 and all the stuffs involved in the vass will non be replaced manually on-site but will be repaired remotely. It is expected that the divertor will undergo serious eroding and is expected to be replaced 3 times during the life-time of ITER ( 36 ) . Therefore, DTP2 installation will be built in ITER to transport out all distant managing occupations. This will move as an in-vessel conveyance system to take and reinstall any harm faculties. The inside informations of how distant handling will assist to mend the vass are discussed in great inside informations at ( 50 ) and ( 51 ) . The stuff used is non specified here but it involved the usage of automaton and progress electronics that is available at current engineering.Cooling SystemThe chilling system in a merger reactor must be really advance as it is required to chill and pull out a theoretical power of 500 MW. However, the chilling system here will non present a job to a merger reactor like ITER. This is due to the fact that the current engineering can manage a atomic fission power works that let go ofing 1000 MW of end product power. The choice of stuff for the coolant of the merger power reactor can be every bit simple as H2O. Although there is other proposed design whereby the coolant selected will be liquid Li and it will acts as both the tritium breeder and coolant in a merger power works ( 25 ) , nevertheless, ITER will be utilizing the H2O as its chief coolant to pull out the heat energy. The status of the H2O used here are of 3.8 – 4 MPa with inlet temperature of 140 A °C and outlet temperature of 190 A °C with speed of about 5 m/s ( 31 ) . The H2O chilling system will be arranged to go around the cover faculty, the heat sinks, the divertor, the divertor cassette, the genteelness cover and the vacuity vas. The piping of the chilling system will be unstained steel[ 50 ]. However, it is of import that note that the B content in the steel will bring forth He as waste at topographic points where the steel is stopping points to the H2O chilling channels. Therefore, the B content in steel used for in-vessels chilling pipe must be reduced to 0.0010 % , so that the He coevals can be minimised. For all the magnetic spirals, it is indispensable that they are cooled by ace critical He of approximative 4 K.DiscussionDecisionMentions