Hunters in the Snow Character Analysis of Tub Essay

Being a man isn’t always easy, for most of their life they are taught to show no affection and to be tough in almost every situation. The tragedy of machismo is that a man is never quite man enough. â€Å"Hunters in the Snow†, by Tobias Wolff, three hunting buddies, Frank, Tub and Kenny, set out on a hunting trip together as they have done for years. Tub, who is over-weight, self-conscious and a good friend, shows some of his weaknesses, strengths and hardships that are sometimes placed on men in different situations. The protagonist, over-weight, Tub and his two hunting buddies, Frank and Kenny take off early one morning to the snowy mountains for a deer hunt. When they arrive and begin heading to the woods they near a creek so they sit down for a little morning snack. Kenny and Frank almost immediately start to pick on Tub as soon as he pulls out a hard-boiled egg and a stick of celery to eat. Kenny states to Tub, â€Å"‘You still on that diet?’ He winks at Frank. ‘What do you think? You think I like hard-boiled eggs?’† stated Tub (Wolff 30). Tub is in denial about his impulsive eating problem, telling them that it is his glands and tries to hide it from them until Frank confines in him about his 15 year old babysitter love affair he is having on his wife. A person being picked on can only take so much until they usually snap or make an impulsive move, the same way that Tub impulsively eats food. After being picked on Tub felt threatened and made an impulsive move by accident. Kenny starts shooting the fence post, a tree, kills a dog and then turns the rifle at Tub saying, â€Å"’ I hate you.’†(33). Tub in fear shoots from the side, shooting Kenny first. Tub and Frank get Kenny in the truck to take to the hospital 50 miles away. Once Tub and Frank begin to drive Kenny to the hospital Frank begins to confine in Tub about his love affair and even though Frank is in the wrong, Tub understands where Frank is coming and doesn’t judge him and instead tells Frank, â€Å"’Frank, when you’ve got a friend it means you’ve always got someone on your side, no matter what. That’s the way I feel about it’† (39). Despite how manly Tub is supposed to be as a man, the two men have this special bond together and they show it. Tub then tells Frank, ‘†When I said that about my glands, that wasn’t true. The truth is I just shovel it in’† (40). Regardless being made fun of or picked on about Tub’s weight and clumsiness, Tub is yet a good listener and a great friend. Ironically, at the end of the story the two guys, Tub and Frank, are bonding and supporting each other at the diner they stop at to get warmed up before the hospital, even though their other friend Kenny is in the back of the truck dying. Frank tells Kenny, â€Å"’It wouldn’t hurt so much if you just stayed put. Now we’re going to the hospital. Got that? Say it—I’m going to the hospital’† (39). Once they leave the diner and are headed back towards the hospital, Tub turns back to Frank, â€Å"’I just pulled a real boner,† he said. What’s that? I left the directions on the table back there’† (39). A man having to be tough and to show no affection can sometimes take a toll on their physical self being, yet they can also still be somewhat sensitive to others emotions and feelings. In this short story by Tobias Wolff, â€Å"Hunters in the Snow†, Tub shows some situations of strength, weaknesses and hardships men endure as a friend or buddy.

Biometrics Essay

Biometric Recognition or Biometrics refers to the automatic identification of a person based on intrinsic physical or behavioral traits. It requires physically present at the point of identification. Identification based on biometric techniques lessen the need to remember a password or carry a token like a physical ID. Various biometric traits are being used for real-time recognition, the most popular being face, iris and fingerprint. However, there are biometric systems that are based on retinal scan, voice, signature and hand geometry. First, a user must be enrolled in the system so that his biometric template or reference can be captured. This template is securely stored in a central database. The template is used for matching when an individual needs to be identified. Depending on the context, a biometric system can operate either in a verification (authentication) or an identification mode. The biometric recognition system is a technology design to monitor the students’ official entry inside the campus. It will also serve as the Internet and Tool room access pass. With the issues concern on the monitoring of students, the researchers delve on the propose project study entitled â€Å"TUPT using Biometric Technology.† It will also be used to identify students who will use University facilities like Internet Center and Tool Room. This study will help the security system by adopting the biometric recognition to identify the bona fide students of TUP- Taguig. It will also track and manage the end user of Internet Center same with the borrower in Tool Room. Statement of the Problem This study would utilize the security systems in the campus. Several problems incurred in the campus wherein the security guards encountered difficulties in dealing with student’s admission. To a large extent, borrowing, monitoring and tracking of equipments by the students are also considered in this study. In view, the researchers prompted to conduct this study by enhancing the ID system in which the Biometric Recognition should be adopted. Objectives General Objective: This study aims to enhance the University ID system by adopting Biometric Technology. Specific objectives: 1.To create a system that will enhance the security of the campus using Biometric technology. 2.To develop a more efficient management and operation in ID system. 3.To gather information regarding the development of ID system in TUP- Taguig using Biometric. 4.To test and implement the effectiveness of said system in the campus.

Stefan’s Diaries: Origins Chapter 33

Pale moonlight danced over Alice's bright hair as I rushed toward the shack. I ran my tongue over my still-sharp fangs, reliving the sensation of my teeth pressing into her pliant, yielding neck. â€Å"You're a monster,† a voice somewhere in my mind whispered. But in the cloak of darkness, with Alice's blood coursing through my veins, the words held no meaning and were accompanied by no sting of guilt. I burst into the shack. It was quiet, but the fire was well-tended and burned brightly. I watched the flames, momentarily entranced by the violets, blacks, blues, and even greens within. Then I heard a faint breath in the corner of the room. â€Å"Damon?† I called, my voice echoing so loudly against the rough-hewn beams that I winced. I was still in hunting mode. â€Å"Brother?† I made out a figure hunched under a blanket. I observed Damon from a distance, as if I were a stranger. His dark hair was matted to his neck, and he had streaks of grime along his face. His lips were chapped, his eyes bloodshot. The air around him smelled acrid–like death. â€Å"Get up!† I said roughly, dropping Alice to the ground. Her almost-lifeless body fell heavily. Her red hair was matted with blood, and her eyes were half closed. Blood pooled around the two neat holes where I'd bitten her. I licked my lips but forced myself to leave the rest of her for Damon. â€Å"What? What have you †¦Ã¢â‚¬  Damon's gaze shifted from Alice to me, then back to Alice. â€Å"Y ou fed?† he asked, shrinking even farther into the corner and covering his eyes with his hands, as if he could somehow erase the image. â€Å"I brought her for you. Damon, you need to drink,† I urged, kneeling down next to him. Damon shook his head. â€Å"No. No,† he rasped, his breath labored as he drew nearer to death. â€Å"Just put your lips to her neck. It's easy,† I coaxed. â€Å"I won't do it, brother. Take her away,† he said, leaning against the wall and closing his eyes. I shook my head, already feeling a gnawing hunger in my belly. â€Å"Damon, listen to me. Katherine is gone, but you're alive. Watch me. Watch how simple it is,† I said as I carefully found the original wound I had made on Alice's neck. I sunk my teeth back into the holes and drank. The blood was cold, but still it sated me. I looked up toward Damon, not bothering to wipe the blood away from my mouth. â€Å"Drink,† I urged, pulling Alice's body along the floor so it was lying next to Damon. I grabbed Damon's back and forced him toward her body. He started to fight, then stopped, his eyes transfixed on the wound. I smiled, knowing how badly he wanted it, how he could smell the overpowering scent of desire. â€Å"Don't fight it.† I pushed his back so that his lips were mere inches from the blood and held him there. I felt him take a deep breath, and I knew he was already regaining strength, just from seeing the red richness, the possibility of the blood. â€Å"It's just us now. Forever. Brothers. There will be other Katherines, forever, for eternity. We can take on the world as we are.† I stopped, following Damon's gaze toward Alice's neck. Then he lunged and took a long, deep drink.

Retail management Essay Example | Topics and Well Written Essays - 3000 words

Retail management - Essay Example By entering into joint-venture agreement with other large-scale grocery retailers around the world, Tesco Plc managed to establish 12 international businesses in Central Europe, Czech Republic, Hungary, Japan, Malaysia, Poland, South Korea, Thailand, Turkey, United Kingdom, and the United States among others (Leahy, 2007, pp. 42 – 43; Couch, 2006; Wilson, 2005). One of the secret behind the business success of Tesco is its ability to determine and deliver what its valued customer wants. In line with this, establishing an effective supply chain management is necessary not only within the operational level but also within the strategic level. Through the use of effective supply chain management system, the use of efficient logistic infrastructure enables the company to easily meet its target consumers’ expectations at a relatively cheaper service costs. In relation to the importance of establishing an effective supply chain management, this report will provide a strategic analysis with regards to the key supply chain issue that Tesco Plc would face over the next five years. As part of going through the main discussion, a brief historical outline with regards to the features of Tesco’s existing supply chain and special offers will be briefly tackled to give the readers with a clear overview concerning the research topic. Based on the historical developments in Tesco’s supply chain management system that took place between 1970s up to the present time, strategic recommendations on how Tesco Plc could further improve its supply chain management system will be highlighted in details. Brief Historical Outline with Regards to the Features of Tesco’s Existing Supply Chain and Special Offers Among the major suppliers of Tesco includes not only the local farmers but also other food and non-food manufacturers (Tesco PLC Corporate Responsibility Review 2007, 2007, p. 12). To achieve and maintain a smooth flow of product supplies coming str aight from Tesco’s accredited suppliers, the retail company maintains not only a good working relationship with its employees who are directly responsible in managing the schedule of delivery of its needed food and non-food supplies but also its valued consumers and a total of 1,500 accredited suppliers (Tesco PLC Corporate Responsibility Review 2007, 2007, p. 14). Mid-1970s – Direct to Store Delivery (DSD) Process During Mid-1970s, Tesco’s supply chain management system was highly dependent over the use of direct to store delivery (DSD) (Gustafsson, 2006, p. 45; Fernie & Sparks, 2004, p. 103). In line with the implementation of DSD process, Tesco was dependent over its regional distribution centres (RDCs) each time there was a need to transport ordered goods coming from its accredited suppliers straight to its retail store outlet (Gustafsson, 2006, p. 45). Although the use of this particular supply chain strategy enabled the company to deliver the ordered produ cts directly to each of Tesco’s store outlets, the retail company encountered customer complaints due to the inconsistency in the quality and market prices of food and non-food products

Homeless brings atrocious effects to a country Research Paper

Homeless brings atrocious effects to a country - Research Paper Example Countless research findings point out that the experience of the homeless prevents the physical, psychological, social, and behavioral development of a person (Hovington-Neville 2012). When a large portion of a country’s population is residing without a permanent, house, several stressors can be especially detrimental to the country’s economic status and social well-being. The following paper discusses and analyzes the adverse effects of homelessness in the United States from an individual and holistic point of view. Homelessness brings atrocious effects to a country from a social, health, and economic point of view. Homelessness affects a country socially in terms of picking up the expense of basic needs and services. Among the basic needs are social isolation, premature pregnancies, and the mental wellbeing of children. Paying for these services is the role of the government, and the higher the cost is, the more the country’s budget and focus on infrastructure is affected negatively (Dennis 105). Since the homeless often undergo numerous kinds of social isolation, the solution out of this isolation is not direct. Social isolation is unacceptable in terms of human liberties, especially in a wealthy country like the United States. Unplanned pregnancies by the homeless mean an entire new generation will be born into the homeless population, thereby making the social impact of this problem less solvable. The damage occurs when the child lacks food, proper physical and emotional care, and standard education. Reason One-The harm caused the lack of food also brings about an extreme form of social isolation. Homelessness is a strong sign of social unfairness in any country (Smith 44). Most people become isolated when their economic incapacitation restricts or fully inhibits their opportunity to partake in the mainstream community. Isolation happens when the mainstream community

Sourcing Process Summary Essay Example | Topics and Well Written Essays - 750 words

Sourcing Process Summary - Essay Example In this paper, we evaluate the steps involved in sourcing processes. Furthermore, identify the opportunities and challenges for insourcing versus outsourcing of parts/components domestically and overseas. In conclusion discussion of the advantages and disadvantages of global versus domestic sourcing done. The flowchart having sourcing process steps provided in the appendix 7. Invoice to Payment: Attain of invoices physically or via electronic communications. Process invoices and credit slips, comprising matching invoices with buy orders and securing authentications. In addition, pay suppliers invoices and handle statement of account (Ericsson.com, n.d). Manage category: Analyze the grouping and supplier market condition. Categorize the supplier in accordance with the supplier’s compliance with standard criteria, explicit criteria, and performance (Ericsson.com, n.d). In sourcing, repatriation is challenging same as the timing and coordination that maintain persistence of service, especially with a resource supplier that is losing its industry. A frequent reason insourcing continuity fails is due to under-approximation of the operational variances. Insourcing challenge is that some industries have shifted several operational responsibilities to organizations outside (outsourcing) a country’s boundaries. Outsourcing overseas denies the mother country opportunities to maximize on profit generation and jobs. Insourcing happens when foreign-headquartered corporations institute operations within the country by creating several subsidiaries that provide jobs opportunities (Sarlak, 2010). The nation has the opportunity to stabilize economically due to insourcing. Insourcing domestically creates more opportunity for a country economic growth. Outsourcing challenges such as â€Å"Shirking† happens when a seller intentionally underperforms while demanding full payment.

Subject political science in 1989 some observers claimed that marxism Essay

Subject political science in 1989 some observers claimed that marxism was obsolete. What if any analytical insights can marxist political economy still provi - Essay Example A Roman citizen often owned slaves who worked his land growing wheat; a feudal lord would seize the surplus wheat grown by the serf on the lands; the early capitalist farmers began to employ landless labourers to do their manual work for a wage that was less than the total value f the product that they created. In each case, wheat is grown on land by the labour f men and women, but the social arrangements are totally different. There are totally different class relationships, leading to totally different forms f society: ancient, feudal, and capitalist. The one thing that unites these three arrangements is that in each case a minority class rules and takes the surplus away from the producers. Each society, says Marx, embodies class exploitation based on the relationships f production, or rather, the modes f production. The key to understanding a given society is to discover which is the dominant mode f production within it. The basic pattern f social and political relationships can t hen be known. Since Marx concentrates his attention on the class structure f capita... While Marx recognizes that there are other classes, the fundamental class division is between this pairing f the exploiter and the exploited. The bourgeoisie derive their class position from the fact that they own productive wealth. It is not their high income that makes them capitalists, but the fact that they own the means f production. For example, the inputs necessary for production - factories, machines, etc. The ability f workers to work (labour power) is in itself a marketable commodity bought for the least cost to be used at will by the capitalist. In addition, the capitalist owns the product and will always pocket the difference between the value f the labour and the value f the product - referred to by Marx as 'surplus value' - purely by virtue f his ownership. His property rights also allow the capitalist the control f the process f production and the labour he buys. The proletariat in contrast, owns no means f production. Because f this exploitation, Marx viewed the bourg eoisie and the proletariat as locked in deep and unavoidable conflict. The criminal justice system, in the words or Marx, is used against, rather than for the people. Under capitalism, the system f law and punishment is inherently unjust, designed not to control crime for the good f the society but to subjugate the population. For instance, imprisonment is imposed less as a direct punishment for convicted felons than as a way to siphon off surplus labour from the population. Since a long cycle f growth and depression is inherent in capitalism, there will be times when there are too many workers that the economy cannot absorb. These surplus workers are a threat to capitalists, since they could organize into a revolutionary movement. Therefore, the theory

How far did the 'Bush Doctrine' constitute a radical shift in US Essay

How far did the 'Bush Doctrine' constitute a radical shift in US foreign policy - Essay Example A historical study is being attempted in this essay to bring out all the elements connected with American foreign policy and its relationship to other countries. Further, various elements of the foreign policy is analyzed here. It is seen that after the Second World War, the Cold War between USA and USSR contributed much to the formation of foreign policies in America. The two pillars of American policy at that time were deterrence and containment. After the fall of USSR in 1991, America became supreme power in the world. As a powerful nation it had to take clear cut foreign policies and the implementation of national security against the uprisings of different segments. But things changed soon. After 2000 America witnessed many damages on its national security. The attack on the Twin Towers and Pentagon on September 11, 2001 made America to think more about changing its foreign policy. The president of the time, George W. Bush expressed the need for the change of policy through his set of guidelines, commonly known as ‘Bush’s doctrine. His doctrine changed the foreign policy of America from deterrence and containment to pre-emptive action against the terrorists. The present essay tries to find out how the Bush’s doctrine acted as a great shift in the foreign policy of America. ... ‘America now commanded a degree of power greater than anything recorded in all of human history. No one doubted this; nor did anyone imagine that any other country or group of countries currently existed with the capacity, or the will, to challenge American power.’1 President Bush: His life, visions and Interests George W. Bush is the only President with an MBA in the history of America. He was born on July 6, 1946, in a political as well as business family in New Haven, Connecticut. Heron Marquez in the biography of George W. Bush says, that ‘His grandfather was Prescott Bush, a United states Senator from Connecticut. Other relatives were bankers and Wall Street stockbrokers.’2 His father was George Herbert Walker Bush, America’s 41st President. The background of politics has made him successful at politics along with business. In 1994 he made his entry into politics becoming the governor of Texas. The election for the president in 2000 made many str uggles for him. He was not supposed to be the president by the popular vote, but with the help of court he successfully became the 43rd president of America. In the election campaign Bush stressed the America’s foreign policy on maintaining peace. ‘He summarized his plans by saying, â€Å"I will renew the bond of trust between the American president and the American military. I will defend the American people against missiles and terror. I will begin creating the military of the next country.†3 The speeches of Bush during the campaign were mainly on the matters of American economy, education, and personal aspects. Even though much was not mentioned regarding the foreign policy he had clearly

Gilmans Theory and Women in Patriarchy vs. Marxs Theory and Workers in Essay

Gilmans Theory and Women in Patriarchy vs. Marxs Theory and Workers in Capitalism - Essay Example Although Gilman claimed to be a humanist, she practically worked extensively to give modern feminism ample sociological grounds (Ritzer 2011; Allen 2009). Research Question Compare and contrast Gilman’s theory as to the oppression of women in patriarchy with Marx’s theory as to how and why workers are oppressed under capitalism. What similarities do you see in their arguments? What are the differences in these two theories of oppression? Gilman’s Theory and Women in Patriarchy Gilman’s most effective and powerful scholarly work in the realm of gender and sexuality studies are perhaps her famous book Women and Economics: A Study of the Economic Relation between Men and Women as a Factor in Social Evolution (Gilman 1898). In this work, she has critically utilized Darwinism in a more socially constructive way and attempted to explain the intricacies of relationships between man and woman. She raised a question about not only the origins of humankind but also about the origins of gender roles, so as to find out that why domestic duties have been specified for women in general in all cultures and societies. She formulated an economic explanation of domestic economy. According to Gilman (1898), traditionally a woman was subjugated to use her sex organs as assets; on which she could further bank to impress her husband and get money to support herself and her children. So marriage is actually an arrangement of both sexual and economic subjugation of women in the male-dominated society. Relatively recently, scholars like MacKinnon (1982) also appear to be endorsing a similar perspective by claiming that women’s sexuality is not women’s own. Marx’s Theory and Workers in Capitalism According to Marx, the industrial capitalist society is clearly divided into two classes, where one class controls the means of production and the other class serves as workers. Oppression arises from the fact that the state becomes a managing co mmittee of the holders of the means of production. And in answering the question that why the workers are finally at the losing side, Marx holds that lack of political organization coupled with a powerful capitalist police state is responsible for the fact that the workers are finally at the receiving end of the system. (Brown 2012; MacKinnon 1982) Consequently, the working class is subjugated both politically and economically. The working class has to work hard and produce all the goods and products necessary for modern society. But they are so occupied with their economic plight that they are compelled to tolerate underpayment and injustice. In this way, they are alienated from their products and the surplus is accumulated by the rich landlords and factory owners.

Sport law and society Essay Example | Topics and Well Written Essays - 3500 words

Sport law and society - Essay Example Politics, history, sociology, economy, accounting, media, entertainment, nationalism, racism, gender issues, drug abuse and unhealthy competition have all become part of almost all the sports. No doubt there are many negative aspects; but there still remain a few very positive factors in every form of sports that makes it divine even today. The pure competition, the thrill of enjoyment of playing and watching both do not fail to take us back to the days of Athens sports when sports was played for crystal clear enjoyment and sporting spirit. It has also become a rich language of nationalism and differentiation. It represents the national aspirations and standoffishness both. The pride involved is because of the nationalistic dimension, which sometimes can go overboard, if not properly controlled. When we talk about the controlling, we unwittingly venture into the arena of Sports Law. EXPANDING REGION OF SPORTS Today, sports come under the banner of social psychology and its theories of communication, inclusion and wellbeing of the society. A society which encourages sports activities at any levels like regional, national and international, is regarded as a healthy society that can face playful, ethical and healthy challenges. As a bridge of communication, builder of friendship, resurrector of healthy bodies and minds, and as promoter of strong and competing outlook, sports is unparalleled. It is nothing new that sport has not remained as pure happiness any more and is increasingly getting commercialised which has created both advantages and disadvantages. There are other connected problems that could create or spoil a perfect social atmosphere. Still sports is considered to be one of the highpoints of human life even in the days of early Roman or Greek civilizations. Sports implies some kind of physical activity that could improve the mental or physical prowess of the participants and enjoyment of the onlookers. The competitions are not considered to be a show of enmity, but of happy competition. The 'Spirit of the Game' is the main slogan here. LEGAL SCOPE Although sports should be ideally played in good-humoured and pleasant atmosphere, every country knows today that sports has to be bound by national and international laws that should be respected by all the connected teams and countries. Any deviation from this law is punishable and the rough play, foul mouthing, un-sportsman-like behaviour, hooliganism by fans are all controlled through civil and criminal laws of the land and through the international sports law. Rough sports should be contained and there has to be a realisation that roughness in sports should not go beyond a certain limit. Adventurous sports could be curtailed by law if there is definiteness about its causing body injury for participants, onlookers or both. INTERNATIONAL LAW International sports law is growing steadily in recent years and has shown that it could be very effective1. It has advocated the efficiency of non-judicial remedies which could be tried before approaching the Courts and Tribunals and in some cases, non-judicial remedies could be more effective and less taxing2. But any attempt to flout the rules and regulations of international sports law could end up in embarrassment and perplexity3. At the same time, there is an increase of conflict between national law and international

Brand Consciousness Among Teenagers Essay Example for Free

Brand Consciousness Among Teenagers Essay Mass media is media which is intended for a large audience. It may take the form of broadcast media, as in the case of television and radio, or print media, like newspapers and magazines. Internet media can also attain mass media status, and many mass media outlets maintain a web presence to take advantage of the ready availability of Internet in many regions of the world. Some people also refer to the mass media as the â€Å"mainstream media,† referencing the fact that it tends to stick to prominent stories which will be of interest to a general audience, sometimes ignoring controversial breaking news. Many people around the world rely on the mass media for news and entertainment, and globally, mass media is a huge industry. Usually, mass media aims to reach a very large market, such as the entire population of a country. By contrast, local media covers a much smaller population and area, focusing on regional news of interest, while specialty media is provided for particular demographic groups. The advantage of running operation in mass media is that one can set up a platform of medium to disseminate favorable message. The advantage of attacking mass media is that one can build up his/her reputation for being less biased and more objective. The advantage of co-operating with mass media is that one can ease the worries of being black mouthed by media organizations. The advantage of buying corporate engaged in mass media is that one can get a big asset for negotiation with political parties and the government. Disadvantages of mass media Well I believe it comes down to the parents or guardians to begin with. Of course younger generations shouldnt be watching as much TV if at all. Most of the primetime shows and stations are becoming more and more passive on what not to show. Having younger children subjected to nudity, cursing, sexual immorality, drinking and other negative adult oriented material is of course unsuitable, heck even unsuitable for adults at times. If the parents let their children watch inappropriate shows on TV Im sure studies have shown the likelihood of these children being involved in such problems later on in life.

English Tort Law Essay Example for Free

English Tort Law Essay Answer: This question raises some issues from negligence. In order to answer this question it is necessary to know about negligence, duty of care, and breach of duty, causation and remoteness. But here the most important parts are employers’ liability, multiple liability or causation, and personal injury. Here the main findings will be Betty Bloke is an employee of these companies or not, she can sue for asbestos-related mesothelioma as a third person. Here the facts are Harry Bloke worked as a carpenter for thirty-five years, being employed by Right Ltd for ten years, then by Ruff Ltd for a further ten years and then by Shoddy plc for fifteen years. Right Ltd were shop fitters, Ruff Ltd produced asbestos prefabricated garages and Shoddy plc produced insulating panels for the building industry. In all of these jobs he was required to work with asbestos sheeting, which he usually had to cut to size either with hand saws or powered saws. Betty Bloke, Harry’s wife, always washed his work overalls every Saturday. She would shake them outside the back door to remove the dust before she put them in the washing machine. Betty has now been diagnosed with asbestos-related mesothelioma and is very ill. All three companies deny liability for her illness. Before attempt to discuss the potential liability of all three companies to Betty in negligence it is necessary to find the relationship between Betty and all three companies. Here it is not clear that Betty was an employee of these companies or not, though every Saturday remove the dust. In 1934 Lord Wright said in Lochgelly Iron and Coal Co v McMullan [1934], ‘In strict legal analysis, negligence means more than heedless or careless conduct, whether in omission or commission: it properly connotes the complex concept of duty, breach and damage thereby suffered by the person to whom the duty was owing.’ In Murphy v Brentwood District Council [1990], the House of Lords held that the council was not liable on the basis that the council could not owe a greater duty of care to the claimant than the builder. In doing so the court also overruled Anns and the two-part test, preferring instead a new three-part test suggested by Lords Keith, Oliver and Bridge in Caparo v Dickman [1990]. In order to impose liability on the employers, Betty has to established foresight, proximity and fairness and it is the current test. In Caparo industries v Dickman [1990], the shareholders in a company bought more shares and then made a successful takeover bid for the company after studying the audited accounts prepared by the defendants. They later regretted the move and sued the auditors claiming that they had relied on accounts, which had shown a sizeable surplus rather than the deficit that was in fact the case. The House of Lords held that the auditors owed no duty of care since company accounts are not prepared for the purposes of people taking over a company and cannot then be relied on by them for such purposes. Harry was an employee but the asbestos did not affect him. His wife suffered mesothelioma, so the current test has to show three things if there is to be a duty of care: 1) It was reasonably foreseeable that a person in the claimant’s position would be injured. Here for Betty Bloke, the risk was reasonably foreseeable as an employee but as a third party it is difficult to show. 2) There was sufficient proximity between the parties. Employers owed some duties to employees. 3) It is fair, just and reasonable to impose liability. After the Caparo test Betty may be satisfy three criteria. Then it will be a vital question that Employers breach any duty or not. The second problem is who has right to sue. Harry was an employee but he is not suffered any disease though it was obvious. If Harry sues on behalf of Betty then it will justify imposing liability to the employers. Here it will be discussed considering the relevant case laws. Bolton v. Stone test may be applicable to prove breach of duty. According to this test employers are not liable. As a general rule English law does not impose a duty, reasoning that the fault of X and not that of D. But exceptionally a duty may arise. Employers are vicariously liable for the negligent acts or omissions. Employers are also liable under the common law principle represented in the Latin phrase, qui facit per alium facit per se. So according to Home Office v Dorset Yacht [1970], and Lewis case it will be consider here. In Hotson v East Berkshire AHA [1987], a young boy suffered a fractured hip when he fell out of a tree. The hospital negligently failed to make a correct early diagnosis so that he later developed avuncular necrosis, a deformity of the even without the failure to diagnosis promptly. On this basis the trial judge, and later the Court of Appeal, awarded him 25 per cent of the damages they would consider appropriate for the loss of a chance of recovery. The trial judge commented that the hospital had translated the probability of the disability developing into a certainty by negligence in their failure to diagnosis. However, the House of Lords allowed the Health Authority’s appeal and would not consider the slim chance of recovery an issue of causation. In Blythe v Birmingham Waterworks [1856], the basic Rule is that the defendant must conform to the standard of care expected of a reasonable person. ‘Negligence is the omission to do something which a reasonable man guided upon those considerations which ordinary regulate the conduct of human affairs, would do, or doing something which a reasonable and prudent man would not do. Betty could get compensation by applying McGhee. In McGhee v National Coal Board [1973], here the claimant worked in a brick kiln where he was exposed to brick dust, a possible cause of the dermatitis that he in fact contracted. The Board was not liable for exposure during working hours. They were held liable for materially increasing the risk of the claimant contracting the disease because of their failure to provide washing facilities, even though it could not be shown that he could have avoided the disease if there had been facilities the reasoning of the court was that, since the employer was clearly negligent in failing to provide basic health and safety the burden should shift on to them to disproved the causal link. This type of test is clearly more advantageous to a claimant than the basic ‘but for’ test applied so rigidly in Hotson v East Berkshire AHA [1987]. To identify the employer’s liability suffered mesothelioma after exposure to asbestos dust of Betty Fairchild v Glenhaven Funeral Services Ltd and others is the most significant test. In the case of Fairchild v Glenhaven Funeral Services Ltd and others [2001], the claimants suffered mesothelioma after exposure to asbestos dust over many years working for a number of different employees. The medical evidence identified hat the inhaling of asbestos fibres was the cause of the disease. Nevertheless, it was impossible to identify in which particular employment the disease was actually contracted. The Court of Appeal accepted that medical evidence could not identify a single cause of the disease, which might be caused by contact with even single asbestos fibre, or may involve cumulative exposure to fibres. The Court of Appeal in fact rejected the claims. The HLs, accepted the expert evidence that it is scientifically uncertain whether inhaling a single fibre or inhalation of many fibres causes the disease. However, the HLs held that, because it is evident that the greater the exposure has a duty to take reasonable care to prevent employees from inhaling the dust. Besides this the House felt that any other cause of developing the diseases could be ignored in the case. On the basis that the claimants suffered the very injuries that the defendants supposed to guard against, the HLs were prepare to impose liability on all employers. The House chose to apply the ‘material risk’ test from McGhee. In doing so the house held that because all of the defendants had contributed to a risk of mesothelioma, then no distinction should be drown between the makings of a material risk of causing the disease and course of action that would materially increase the risk of the diseases. Because the Employers should only be liable for proportion of the damages then each employer should be liable to compensate its employee un full, even though the employee may have inhaled more asbestos fibres while working for another employee. As a result the Court held that the precise employer responsible could not be identified and so the claim should be rejected. It is impossible to say with certainty how the disease begins, but it is possible to identify that prolonged exposure worsens the risk. It seems then that The Court of Appeal applied Wilsher v Essex AHA [1986] inappropriately where McGhee v National Coal Board might have been more fairly applied in the circumstance. The House of Lords has in any case subsequently reversed The Court of Appeal decision. In Holtby v Brigham Cowan (Hull) Ltd [2003], here the claimant had been exposed to asbestos dust for more then 40 years while working for different employers. When he contracted asbestosis he sued the defendants, for whom he had only worked for half of that time. The trial judge reduced damages by 25 per cent. The claimant appealed and tried to argue for application of the principle in McGhee, that once having established a material contribution by the defendants he was entitled to full damages. The Court of Appeal rejected his argument and upheld the trial judge’s award, even though 50 per cent deduction would have seemed more accurate. McGhee was distinguished. A majority of the House of Lords in Gregg v Scott [2005], reaffirmed the general approaches in Hotson’s case should be followed and declined to depart radically from its principles. In Wilsher v Essex AHA [1986] the House of Lords identified that the excess oxygen was just one of six possible causes of the condition and therefore it could not be said to fall squarely within the risk created by the defendants. The court would not impose liability on the defendant in this circumstance although this seems very unfair. The main purpose of the rules of causation is to exclude those thinks that are not the cause of the damage. If the same damage would have been suffered even if the there had been no breach of duty of care, then he claimant loses. The breach of duty of duty may initiate a whole chain of further events-but some of these will be treated as to ‘remote’ from the original negligence for it to be appropriate to hold the defendant answerable for those distant outcomes. The test of remoteness of damage in the tort of negligence was said to be whether the damage the direct consequence of the breach of duty. The defendant was not liable, if it was merely indirect, which ‘broke the chain of causation’. This test was particularly associated with the decision of the Court of Appeal in Re Polemis [1921]. In The Wagon Mound [1961], The Privy Council held that defendant would be liable only if it was the foreseeable consequence. From the above discussion, a number of points can be made, which will be consider that Betty get compensation or not. †¢ The judges in the House of Lords in Fairchild accepted that the sufferers of mesothelioma, while inevitably deserving of compensation, are unable to satisfy the normal tests for causation because they will invariably be unable to point to a single party who is responsible. †¢ The Court was prepared to accept the possibility of a claim for three connected reasons: Claimants in such actions were unable to satisfy for causation only because of the current state of medical knowledge on the disease, although there could be no doubt that exposure to the asbestos fibres in whatever volume was at the root of the disease. Defendant has to prove that their negligence could not be the actual cause rather then the claimants prove the precise cause. The employer’s duty of care would be meaningless, as they could almost never be made liable. †¢ The majority of the judges were therefore prepared to accept an exceptional principle of McGhee. †¢ The Court was not prepared to extend principle of McGhee to factual circumstance such as those in Wilsher. †¢ The House of Lords appear to have engaged in a policy decision in order to ensure that there is compensation for asbestos related diseases contracted in the course of employment. So there is a limited chance to get compensation according to applying Fairchild and McGhee. Then three employers will be liable and bear compensation fully. But if Court apply Hotson v East Berkshire AHA Betty or Harry does not get compensation. Bibliography: 1) Markesinis and Deakin, Tort Law, 5th Edition (2003), Clarendon Press-Oxford 2) John Murphy, Street on Torts, 11th Edition (2003), LexisNexistm UK, 3) Chris Turner Unlocking Torts, 1st Edition (2004), Hodder Stoughton 4) I. M Yeats P. Giliker, Law of Tort, (2006), University of London

Mobile Robotic Arm Motivation Computer Science Essay

Mobile Robotic Arm Motivation Computer Science Essay Robotics is technology that deals with the design, construction and operation of  robots  that are used in numerous applications is called robotics. It has become an unstoppable force in the development of modern machinery as they make life easier. It is an interesting topic to dwell in as it is the future of mankind. Although we know them as recent inventions, the idea of automated or controlled machines has fascinated humans. With this fascination it motivated me to work on this project, building and programming a mobile robotic arm. It is my hunger to learn and attain knowledge that drives me towards this field of study for my project. C:UsersDanDesktopImages21042010(002).jpg Figure 1.1.1 : Mobile Robotic Arm 1.2 Introduction to Robotics Robotics is an interesting topic of research. Basically it is an engineering field that is concerned with research and creation of robots for various applications. Robots are machines that consist of electronic and mechanical parts such as gears and cogs put together for performing tasks in place of humans. They can be programmed to perform a whole range of tasks with ease. They are most desired for certain functions because they never tire, they can endure harsh physical conditions that is possibly life threatening and they never get bored or distracted from repetitious work. The number of robots has begun to increase in numbers everywhere as they make human labour almost non-existent with their efficiency and throughput. They can work with the simplest of materials to the most dangerous such as radioactive materials. They can be found more commonly in industrial use from production lines of factories to harvesting of fruits in orchards. In domestic use, from vacuum cleaning to lawn mowing where these domestic tasks have become boring for a human to undertake and would rather leave it to robots. In the more modern military use, robots play an important role to reduce human casualties from dangerous jobs such as bomb defusal and not forgetting space exploration where it might not be possible for humans to explore and for collecting terrain sample from foreign planets. For exploring enemy territories unmanned aerial vehicles are used from which these pilotless drones can search terrains for hostiles and fire on targets. Robots are meant to complete tasks that it is programmed to do. Programs can always be altered to suit the task at hand. As robots become more advanced they gain more features such as sensors and artificial intelligence as they become more human like. Examples of sensors include motion sensors, temperature sensors, light and many more various types. For example, in pathfinder robots we usually find a motion sensor which aids a robot in avoiding obstacles. In other applications for example in a water tank when the water has reached a certain level the sensor enables the robot to stop the flow of water. It can be used in industrial applications such as gripping objects from conveyor belts or it can be used in a more advanced role such as bomb defusal, where it would be dangerous for a human to interact. With camera attachments, humans can control these machines from a safe distance while completing the task at hand in a safe and efficient manner. In the medical field where a more delicate touch is required, a robotic arm can perform tiny incisions for a less invasive method. With a robotic arm jobs can be done with ease and efficiency and thus eliminate human errors and the costs that come with those errors. http://www.engr.colostate.edu/~dga/mech324/handouts/linkage_stuff/Mars_rover.png Figure 1.2.1 : Mars Rover 1.3 Objectives The aim of this project is to build a robotic arm for the purpose of lifting and moving small objects. It is just like a human arm with joints to facilitate movement. The end attachment features a gripper which is able to grab and hold objects and also a probe light in order to work in low light scenarios. The arm is controlled via wired remote. It is rested on a mobile base which is fitted with 2 rear wheels and 2 robot castors at the front. This allows the robot to move to the desired location where the object is. The objectives of this project are: To understand and develop core knowledge in robotics. To apply the knowledge of robotics and design a prototype. To implement the designs and build an actual prototype. Figure 1.3.1 : Project Layout End Insert Instruction Codes into PIC Test Prototype Evaluate Coding in relation to hardware design Write Codes Discuss Movement Concept Propose Objectives1.4 Design Stage Figure 1.4.1 : Design Flow Chart This simple flowchart can explain the overall process involved in this project. After the objectives have been proposed the robot movement and motion concept is discussed and after that the codes are written. It is downloaded into the microcontroller for testing. If testing fails we return to the code stage and evaluate the coding. The process reaches the end after testing passes. Chapter 2: Robot Overview 2.1 Hardware Design This aim of this project is to design a mobile robotic arm. The arm part consists of two joints which enable 2 degree of movement and at the end of the top joint is a gripper which enables objects to be gripped by the attachment. The base has two wheels at the back and at the front two robot castors which has ball bearings underneath. This project involves two parts which is hardware and software. However both parts are intricately connected and it is hard to actually separate them completely. This report will focus more on the software aspect. There will be some minor hardware introduction as understanding of the hardware is required to work with the software. Here is the component list for the hardware: Component Amount Microcontroller PIC18F4520 1 Motor Driver SN754410 1 4.7k Ohm Resistor 1 1uF Capacitor 4 0.33uF Capacitor 1 0.1uF Capacitor 1 L7805 Voltage Regulator 1 20MHz Oscillator 1 9 Volt Battery 1 C40R Servo Motor 3 C55R Servo Motor 1 Servo Holder 4 Servo U Bracket 2 SPG10 Geared Motor 2 42mm Wheels 2 Robot Castors 2 Table 2.1.1 : Hardware Components To write the software one must be familiar with the hardware functionality, configuration and settings. The hardware of significant importance would be the microcontroller as the program is stored there. It sends the signal to the pins where other devices are connected. One of those devices is the servo motor. It is what controls the arm and base. Actual control of the servos is by buttons. Those buttons are connected to the microcontroller and is able to control the servo thru programming of the microcontroller. It is done by generating and manipulating PWM signals which will be discussed later. PROJECT BOARD 20.0 cm 24.0 cm 10.0 cm 25.6 cmTOP PROFILE.jpg Figure 2.1.1 : Robot Layout 2.2 Software Design After the purpose and specifications are determined it is time to plan and design the software. Most modern robots are controlled by sophisticated software. Creation and modification of the software is crucial to make machines work the way we want it to. There are many ways a machine can be programmed. The software is usually stored in the heart of the machine which is either a microprocessor or a microcontroller depending on what the machine does and how it works. That device is the brains of the robot as all the instructions are stored there. The software is the link for the user to the hardware as the program relays the instructions to the robot in machine code. The user writes the program in computer language which will then be converted into machine code by the compiler. There are many computer languages available to write programs such assembly, C, Pascal, BASIC and FORTH. For this project the microcontroller that is used is Microchips PIC18F4520. The language used to program the microcontroller is C. C is a simple and procedural language and it has influenced many later languages such Java. It is generally variable and function based. Values are stored in variables for easy access and it is structured by defining and calling functions to perform tasks. C allows precise control of the input and output. The input and output can be easily directed to the microcontroller terminals. The IDE (integrated development environment) that is used for this project is MPLAB which is a 32bit program used for the software development of this project along with the MPLAB C18 compiler add-on to allow the codes to be written in C . This is the screenshot of the development environment: C:UsersDanDesktopFYP ReportimagesUntitled.jpg Figure 2.2.1: MPLAB IDE The general idea of writing the program is to control the pins of the microcontroller. The robot arm mechanism and the base mechanism will be separated for easier explanation. The arm is made up of the 1st stage, 2nd stage, the left gripper and the right gripper. Control of the servos is by generating PWM signals which will be discussed in detail in chapter 4. By manipulation of these PWM signals we can control the servo movement to a certain angle with great precision. For the DC motors in the base, it is controlled via motor controller. By manipulating logic combinations we will be able to control the movement and direction of the base. Infinite loop to check for button press A button is pressed Necessary routine or function is called to move servo/ DC motor End Figure 2.2.2 : General Software Flowchart This is a general flowchart to represent the program flow. A while loop with an infinite condition is used to continuously check if a button has been pressed. If a button is pressed it will call the necessary function to run the specific device whether it is the servo or the DC motor. Chapter 3: Hardware Information 3.1 Microcontroller This project makes use of Microchip Technologys PIC18F4520 microcontroller. Lets discuss in detail what is a microcontroller and how it makes this project work. Notice that a microcontroller is chosen instead of a microprocessor for this project for a number of reasons. To make the choice, one must know the difference between a microcontroller and a microprocessor in terms of functionality and application. Both are typically a small computer in the form of an integrated circuit which contains things like registers, memory, I/O, interrupts and timers. They vary in terms of number of I/O, registers, clock speed and memory size. Microcontrollers are usually for cases that involve a lot of input output devices in contrast to a microprocessor which is usually used for heavy data applications. So that means microcontrollers dominate the robotics and automation industry. Lets examine closely what it looks like and the detailed features for this particular microcontroller, the PIC18F4520. Its versatility, robust nature and features contributed to the choosing of this IC. The detailed features along with its operation can be found in the datasheet for the microcontroller. C:UsersDanDesktopFYP ReportimagesPIC18F4520IP.jpg Figure 3.1.1 : PIC18F4250 Parameter Name   Value   Program Memory Type   Flash   Program Memory (KB)   32   CPU Speed (MIPS)   10   RAM Bytes   1,536   Data EEPROM (bytes)   256   Digital Communication Peripherals   1-A/E/USART, 1-MSSP(SPI/I2C)   Capture/Compare/PWM Peripherals   1 CCP, 1 ECCP   Timers   1 x 8-bit, 3 x 16-bit   ADC   13 ch, 10-bit   Comparators   2   Temperature Range (C)   -40 to 125   Operating Voltage Range (V)   2 to 5.5   Pin Count   40 Table 3.1.1 : PIC18F4250 Specifications Peripheral Highlights: à ¢Ã¢â€š ¬Ã‚ ¢ High-current sink/source 25 mA/25 mA à ¢Ã¢â€š ¬Ã‚ ¢ Three programmable external interrupts à ¢Ã¢â€š ¬Ã‚ ¢ Four input change interrupts à ¢Ã¢â€š ¬Ã‚ ¢ Up to 2 Capture/Compare/PWM (CCP) modules, one with Auto-Shutdown (28-pin devices) à ¢Ã¢â€š ¬Ã‚ ¢ Enhanced Capture/Compare/PWM (ECCP) module (40/44-pin devices only): One, two or four PWM outputs Selectable polarity Programmable dead time Auto-Shutdown and Auto-Restart à ¢Ã¢â€š ¬Ã‚ ¢ Master Synchronous Serial Port (MSSP) module supporting 3-wire SPIà ¢Ã¢â‚¬Å¾Ã‚ ¢ (all 4 modes) and I2Cà ¢Ã¢â‚¬Å¾Ã‚ ¢ Master and Slave Modes à ¢Ã¢â€š ¬Ã‚ ¢ Enhanced Addressable USART module: Supports RS-485, RS-232 and LIN 1.2 RS-232 operation using internal oscillator block (no external crystal required) Auto-Wake-up on Start bit Auto-Baud Detect à ¢Ã¢â€š ¬Ã‚ ¢ 10-bit, up to 13-channel Analog-to-Digital Converter module (A/D): Auto-acquisition capability Conversion available during Sleep à ¢Ã¢â€š ¬Ã‚ ¢ Dual analog comparators with input multiplexing) Power Managed Modes: à ¢Ã¢â€š ¬Ã‚ ¢ Run: CPU on, peripherals on à ¢Ã¢â€š ¬Ã‚ ¢ Idle: CPU off, peripherals on à ¢Ã¢â€š ¬Ã‚ ¢ Sleep: CPU off, peripherals off à ¢Ã¢â€š ¬Ã‚ ¢ Idle mode currents down to 5.8 ÃŽÂ ¼A typical à ¢Ã¢â€š ¬Ã‚ ¢ Sleep mode current down to 0.1 ÃŽÂ ¼A typical à ¢Ã¢â€š ¬Ã‚ ¢ Timer1 Oscillator: 1.8 ÃŽÂ ¼A, 32 kHz, 2V à ¢Ã¢â€š ¬Ã‚ ¢ Watchdog Timer: 2.1 ÃŽÂ ¼A à ¢Ã¢â€š ¬Ã‚ ¢ Two-Speed Oscillator Start-up Flexible Oscillator Structure: à ¢Ã¢â€š ¬Ã‚ ¢ Four Crystal modes, up to 40 MHz à ¢Ã¢â€š ¬Ã‚ ¢ 4X Phase Lock Loop (available for crystal and internal oscillators) à ¢Ã¢â€š ¬Ã‚ ¢ Two External RC modes, up to 4 MHz à ¢Ã¢â€š ¬Ã‚ ¢ Two External Clock modes, up to 40 MHz à ¢Ã¢â€š ¬Ã‚ ¢ Internal oscillator block: 8 user selectable frequencies, from 31 kHz to 8 MHz Provides a complete range of clock speeds from 31 kHz to 32 MHz when used with PLL User tuneable to compensate for frequency drift à ¢Ã¢â€š ¬Ã‚ ¢ Secondary oscillator using Timer1 @ 32 kHz à ¢Ã¢â€š ¬Ã‚ ¢ Fail-Safe Clock Monitor: Allows for safe shutdown if peripheral clock stops Special Microcontroller Features: à ¢Ã¢â€š ¬Ã‚ ¢ C compiler optimized architecture: Optional extended instruction set designed to optimize re-entrant code à ¢Ã¢â€š ¬Ã‚ ¢ 100,000 erase/write cycle Enhanced Flash program memory typical à ¢Ã¢â€š ¬Ã‚ ¢ 1,000,000 erase/write cycle Data EEPROM memory typical à ¢Ã¢â€š ¬Ã‚ ¢ Flash/Data EEPROM Retention: 100 years typical à ¢Ã¢â€š ¬Ã‚ ¢ Self-programmable under software control à ¢Ã¢â€š ¬Ã‚ ¢ Priority levels for interrupts à ¢Ã¢â€š ¬Ã‚ ¢ 8 x 8 Single-Cycle Hardware Multiplier à ¢Ã¢â€š ¬Ã‚ ¢ Extended Watchdog Timer (WDT): Programmable period from 4 ms to 131s à ¢Ã¢â€š ¬Ã‚ ¢ Single-supply 5V In-Circuit Serial Programmingà ¢Ã¢â‚¬Å¾Ã‚ ¢ (ICSPà ¢Ã¢â‚¬Å¾Ã‚ ¢) via two pins à ¢Ã¢â€š ¬Ã‚ ¢ In-Circuit Debug (ICD) via two pins à ¢Ã¢â€š ¬Ã‚ ¢ Wide operating voltage range: 2.0V to 5.5V à ¢Ã¢â€š ¬Ã‚ ¢ Programmable 16-level High/Low-Voltage Detection (HLVD) module: Supports interrupt on High/Low-Voltage Detection à ¢Ã¢â€š ¬Ã‚ ¢ Programmable Brown-out Reset (BOR With software enable option Here is a list of pins and how they are connected in the circuit. Pin Name Pin Number (PDIP) Functions MCLR 1 Reset RA1 3 Servo PWM Input RA2 4 Servo PWM Input RA3 5 Servo PWM Input RA4 6 Servo PWM Input VDD 11 +5V VSS 12 Grounded OSC1 13 Oscillator Crystal/External Clock Input OSC2 14 Oscillator Crystal/External Clock Input RC0 15 IN2 of Motor Driver RC1 16 IN1 of Motor Driver RC3 18 IN4 of Motor Driver RD0 19 IN3 of Motor Driver VSS 31 Grounded VDD 32 +5V RB0 33 Motor Push Button RB1 34 Motor Push Button RB2 35 Motor Push Button RB3 36 Motor Push Button RB4 37 Servo Arm Push Button RB5 38 Servo Arm Push Button RB6 39 Servo Arm Push Button RB7 40 Servo Arm Push Button Table 3.1.2 : Pin Connections C:UsersDanialDesktopFull Schem.JPG Figure 3.1.2 : Full Schematics 3.2 Motor Driver Figure 3.2.1 : SN754410 Motor Driver The SN754410NE is a quadruple half-H driver. The SN754410 can operate a pair of DC motors at the same time. It gives the robot bidirectional movements. It carries the peak output currents up to 1 ampere at a voltage range of 4.5 to 36V. The SN754410 has a minimum logic voltage of 4.5V and a maximum logic voltage of 5.5V. This driver is made to operate from a -400C to 850C. Drivers are enabled in pairs. Driver 1 and driver 2 are enabled by 1,2EN. Driver 3 and driver 4 are enabled by 3,4EN. When the input is low, the drivers are disabled and the outputs are off. If the input is high, the drivers are enabled and the outputs are on. Figure 3.2.2 : SN754410 Motor Driver Pinout Pin 1 (1,2EN) enables/ disables the motor Pin 2 (1A) is a logic pin for the motor Pin 3 (1Y) is for Motor A Pin 4, 5 are for grounding Pin 6 (2Y) is for Motor A Pin 7 (2A) connected to the motor Pin 8 (VCC2) connected to source for motor power Pin 9 (3,4EN) enables/ disables the motor Pin 10 (3A) connected to the motor Pin 11 (3Y) is for Motor B Pin 12, 13 are for grounding Pin 14 (4Y) is for Motor B Pin 15 (4A) connected to the motor INPUTS OUTPUT Y H = High Level L = Low Level X = Do Not Matter XX = OFF A EN H H H L H L X L XX Table 3.2.1 : SN754410 Function Table C:UsersDanialDesktopMotor.JPG Figure 3.2.3 : Motor Schematics 3.3 DC Motor This project will use the SPG10 Geared Motor that has 1.3 kg/cm torque. This motor is light enough to not weigh down the robot and only weighs 10 grams. It runs at 45 rpm. Figure 3.3.1 : SPG10 Motor C:UsersDanDesktopImages23042010(001).jpg Figure 3.3.2 : Motor Wheel 3.4 Servo Motor A servo is a mechanism used in robotic control systems. It is a mechanism that the user can set and forget. This is because of its ability to make corrections to return to its preset state if any changes occur. This is thanks to feedback operations. A servo is a casing that contains a DC motor, some gears with an output shaft, a variable resister that is connected to the output shaft, and a control board. The sensor mechanism allows the control circuit to monitor the current. The motor, through a series of gears, turns the output. The control circuit calculates the difference from the intended position from the current position the shaft is in. This makes the motor turn to its new position. If the control circuit senses that the position is accurate, it brings to a halt the motor. There are three connections to a servo; the power line, the ground line and finally the control signal. The servo needs to be told when to move and wont do so even if power is provided directly. The servo utilizes pulse width modulation (PWM) stream to indicate its position. Specification Servo Motor Model At 5 Volts Speed (s/60o) 0.19 Torque (Kg.cm) 6.00 Signal To Control Angle TTL PWM PWM At Min Angle (ms) 0.54 PWM At Max Angle (ms) 2.40 Operating Voltage (VDC) 4.8-6.0 Operating Frequency (Hz) 50.0 Moving Range(degree) 0-180 Wiring (Black/Brown Wire) Ground Wiring (Red Wire) 4.8-6.0 Volts Wiring (Orange/Other Wire) PWM Signal Table 3.4.1 : Servo Specifications C:UsersDanialDesktopUntitled.jpg Figure 3.4.1 : Servo Motor C:UsersDanialDesktopServo.JPG Figure 3.4.2 : Servo Schematic Chapter 4: Software Coding 4.1 PWM Generation PWM is simply the short form for pulse-width modulation. It is an efficient way to provide intermediate amounts of electrical power between fully on and fully off. This means PWM signals are digital, because at any instant given instant of time, the full DC supply is either fully on or fully off. PWM is employed in a wide variety of applications, ranging from measurement and communications to power control and conversion. Many microcontrollers include on-chip PWM controllers, like the one which is used this project, which makes this easy for controlling the servos for this project. One of the advantages of PWM is that the signal remains digital all the way from the processor to the controlled system and no digital-to-analog conversion is necessary. By keeping the signal digital, noise effects are minimized. Noise can only affect a digital signal if it is strong enough to change logic 1 to logic 0, or vice versa. PWM is the basis of controlling the servos in this project. Lets examine some basic theory. C:UsersDanDesktopFYP Reportimagespwm.gif Figure 4.1.1 : PWM Square Wave The diagram above shows a PWM signal that changes between 0 and 5 volts which is equivalent as digital logic 0 and 1. Notice that the waves are symmetrical. The uptime and downtime is 10ms when added together we get the period which is 20ms. Now that the basics are out of the way, lets look at how a normal servo signal input looks like. C:UsersDanDesktopFYP Reportimagespwm_servo.gif Figure 4.1.2 : PWM Wave Note that the servo runs at 50Hz frequency and therefore the period is 20ms. The uptime is what determines the angle of which the servo motor moves to. In simple words, we can tell the servo where to move with great precision. These are some examples for 180 ° servos. t = 0.9ms T = 20ms Angle = 0 ° t = 1.5ms T = 20ms Angle = 90 ° t = 2.1ms T = 20ms Angle = 180 ° The next step is to create these PWM signals using the PIC microcontroller. The PWMs is in this switch statement: switch(count){ //Choose which servo to modify case 1: PORTA = 0x02; // First Stage WriteTimer1( servo3 ); break; case 2: PORTA = 0x04; // Left Gripper WriteTimer1( servo1 ); break; case 3: PORTA = 0x08; //Right Gripper WriteTimer1( servo0 ); break; case 4: PORTA = 0x10; // Second Stage WriteTimer1( servo2 ); break; } Figure 4.1.3 : Switch Statement The operations for the timers are split in to 4 possible cases of how to generate PWM signal to the pins to power the servos. This is what the statement does:   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  //INTERRUPT CONTROL #pragma code InterruptVectorHigh=0x08 void InterruptVectorHigh (void) { _asm  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  //assembly code starts goto InterruptHandlerHigh   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  //interrupt control _endasm  Ã‚  Ã‚  //assembly code ends } #pragma code #pragma interrupt InterruptHandlerHigh   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  //end interrupt controlCase 1 turns PortA1 On and resets the timer1.   Case 2 turns PortA1 Off, PortA2 on and resets the timer1. Case 3 turns PortA2 Off, PortA3 on and resets the timer1. Case 4 turns PortA3 Off, PortA4 on and resets the timer1. Figure 4.1.4 : Interrupt Handler The switch statement is nested in the interrupt handler function. The interrupt handler handles the timer operations. The interrupt control runs assembly code and then calls the go-to function which is InterruptHandlerHigh. The interrupt controller is set at high priority 0x08. Once the interrupt control is correctly implemented interrupts is sent to the interrupt handler where we can do whatever operation necessary depending on the type of interrupt.   4.2 Arm Control void move(int one,int two,int three,int four, int five) { if(one) servo0 = one; // Right Gripper if(two) servo1 = two; // Left Gripper if(three) servo2 = three; // Second Stage Link if(four) servo3 = four; // First Stage Link }A move function is declared to make things easier when linking with buttons. The arguments of the move function are the respective position the servo moves to when it is called upon. Figure 4.2.1 : Move Function After the move function is declared it can be called when the specific button is pressed. //Arm Control if(PORTBbits.RB7==1) move(0xF03B,0xF477,0,0,0); //GRIP! if(PORTBbits.RB6==1) move(0,0,(servo2-0x0250),(servo3+0x0100),0); //MOVE AWAY if(PORTBbits.RB5==1) move(0,0,(servo2+0x0250),(servo3-0x0100),0); //MOVE TOWARDS if(PORTBbits.RB4==1) move(0xFA77,0xEE07,0,0,0); //UNGRIP! Figure 4.2.2 : Arm Button Check There are 4 buttons that control the movement of the arm. PortB pin 0: Close the gripper PortB pin 1: Move arm away PortB pin 2: Move arm towards PortB pin 3: Open the gripper C:UsersVictorDesktopImagesClose Gripper.jpg Figure 4.2.3 : Close Gripper This picture depicts a closed gripper state that is triggered by the button. The following figure is how the robotic arm will look when it is triggered to open both grippers. C:UsersDanDesktop22042010(007).jpg Figure 4.2.3 : Open Gripper 4.3 Base Control The only thing that needs to be controlled in the base is the 2 DC geared motors. It is linked with the microcontroller through the H-bridge. The motors rotational direction is determined by a combinational logic code as seen in the data sheet of the motor driver. It is the same with the servo, when a button is pressed certain commands will be executed. //Base Control if(PORTBbits.RB3==1) { //Forward control PORTCbits.RC1=1; PORTCbits.RC0=0; PORTDbits.RD0=1; PORTCbits.RC3=0; } if(PORTBbits.RB2==1) { //Reverse control PORTCbits.RC1=0; PORTCbits.RC0=1; PORTDbits.RD0=0; PORTCbits.RC3=1; } Figure 4.3.1 : Base Button Check (Forward/Reverse) if(PORTBbits.RB1==1) { //Left control PORTCbits.RC1=0; PORTCbits.RC0=1; PORTDbits.RD0=1; PORTCbits.RC3=0; } if(PORTBbits.RB0) { //Right Control PORTCbits.RC1=1; PORTCbits.RC0=0; PORTDbits.RD0=0; PORTCbits.RC3=1; } Figure 4.3.2 : Base Button Check (Left/Right) There are 4 buttons that control the movement of the base. PortB pin 4: Forward PortB pin 5: Reverse PortB pin 6: Move right PortB pin 7: Move left 4.4 Simulation C:UsersDanDesktopUntitled.jpg Figure 4.4.1 : Watch Simulation The MPLAB software allows a minimal amount of simulation to show that the program is written correctly. Due to software limitation on the PIC18F4520 it is unable to correctly show port activities. However it does show variable activity like in the figure by using the watch feature in the MPLAB. This screenshot shows the stepping when reaching the OpenTimer1 function. A separate window opens to show the function and it will continue to step through the function until it is done. C:UsersDanDesktopUntitled1.jpg Figure 4.4.2 : Program Stepping The stepping continues while opening the necessary functions in a separate window and steps though it until it is done. It reaches the while loop and it keeps looping as it waits for a button to be pressed. Figure 4.4.3 shows the final stage of the program stepping. C:UsersDanDesktopUntitled3.jpg Figure 4.4.3 : Final Stepping Chapter 5: Conclusions and Recommendation 5.1 Summary This project has further expanded my interest and knowledge in the field of robotics. A project that is very hands on like this helps with the development of certain skills that would certainly help when I go on to become a professional engineer. The most important skill would be planning the stages of the project. To conclude, this project involved two phases which is the hardware design and software design. This report covered the software aspect in detail. In the early stages of this project different methods was planned for the outcome. At the start, the use of a PLC (programmable logic controller) was planned. However it proved to be infeasible in terms of cost and size. In the end it was decided that a PIC microcontroller was to be use as it is easier to implement with respect to the project and provides a great deal of functionality. The programming was made easier with the addition of the C compiler thus enabling the use of a higher level language which is C. With the use of a language of higher level it would be easier to implement features that were not possible using the PLC. 5.2 Recommendations In this project, certain improvements can be made in order to make things work more efficiently. For example, the quick movements seen in the arm is because of the incrementer seen in the codes and lack true control software. By revising the software and introducing more control oriented design it is possible to fine tune the speed. Instead of the 2 robot castors that make up the front motion it could be replaced with wheels and a servo in between them to make the movement and control similar to remote controlled cars. The wired controller could be replaced with a wireless RF controller to allow more freedom to the user. The body work could be improved by using sturdier and lightweight materials such as aluminium. Some sensors could be added to enhance the normal usage of the arm.

The Overwhelming Atmosphere in Macbeth :: Macbeth essays

The Overwhelming Atmosphere in Macbeth      Ã‚   The atmosphere looms heavy in William Shakespeare's tragic play Macbeth. However, there are some brief, contrasting moments. In this paper we shall dwell on this dimension of the playwright's work.    A.C. Bradley in Shakespearean Tragedy comments on the contribution of the imagery to the atmosphere of the play:    The vividness, magnitude, and violence of the imagery in some of these passages are characteristic of Macbeth almost throughout; and their influence contributes to form its atmosphere. Images like those of the babe torn smiling from the breast and dashed to death; of pouring the sweet milk of concord into hell; of the earth shaking with fever; of the frame of things disjointed; of sorrows striking heaven on the face, so that it resounds and yells out like syllables of dolour; of the mind lying in restless ecstasy on a rack; of the mind full of scorpions; of the tale told by an idiot, full of sound and fury; -- all keep the imagination moving on a 'wild and violent sea', while it is scarcely for a moment permitted to dwell on thoughts of peace and beauty. (309)    Charles Lamb in On the Tragedies of Shakespeare comments on the atmosphere surrounding the play:    The state of sublime emotion into which we are elevated by those images of night and horror which Macbeth is made to utter, that solemn prelude with which he entertains the time till the bell shall strike which is to call him to murder Duncan, - when we no longer read it in a book, when we have given up that vantage-ground of abstraction which reading possesses over seing, and come to see a man in his bodily shape before our eyes actually preparing to commit a muder, if the acting be true and impressive as I have witnessed it in Mr. K's performance of that part, the painful anxiety about the act, the natural longing to prevent it while it yet seems unperpetrated, the too close pressing semblance of reality,give a pain and an uneasiness [. . .]. (134)    In Fools of Time: Studies in Shakespearean Tragedy, Northrop Frye shows how the atmosphere is altered for the better at the end of the play:    This theme is at its clearest where we are most in sympathy with the nemesis. Thus at the

Crime Essay -- essays research papers

Crime   Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  Ã‚  Ã‚  Ã‚  What is crime? Crime is an act committed in violation of law for which punishment is imposed upon conviction. It also can be unlawful activity, a serious offense, especially in violation of morality. Crime effects anyone, and everyone. People that commit crimes are of all gender, color, ethnicity etc. Crime effects all towns, cities, states, and countries; even though many places are significantly different in matters of crime that takes place there. Take for example: Johnstown, Pennsylvania with a crime rate of 16.6 crimes per 1,000 residents in 1999 and Miami, Florida with a crime rate of 87.4 crimes per 1,000 residents in 1999. Crimes in these two cities are on the opposite ends of extremes. The United States has lo...

The Mexican State of Chiapas Essay example -- Culture History Historic

The Mexican State of Chiapas Historically, the preservation of culture and the progress of development have been conflicting ambitions. Mexico, in particular, has been a frequent witness to the violent clash of the Old and New Worlds ever since European explorers set foot on American soil in 1492. In particular, the Mexican state of Chiapas has resisted the desecration of Mayan culture for the past 500 years, culminating in the Zapatista Revolution that began on New Year’s Eve of 1994. This paper seeks to explore both the chronology of the Mayan fight for political and educational autonomy, as well as detail the historic reformation of the past decade. Mayan culture is one of the most ancient in the world, with origins reaching well into 1500 B.C. The Mayans inhabited various regions throughout Central and Latin America, though most were centralized on the Yucatà ¡n Peninsula in southern Mexico. The Mayans were innovators in agriculture, art and architecture, and were organized into small villages run by tribal councils. The Spanish conquest of the late 1400s and early 1500s forced a horrific halt to the traditional Mayan way of life. The human cost of the European conquest of the ‘New World’ was horrific. When quantified, the genocide becomes a multiple of the Holocaust by ten†¦Of an estimated 100 million indigenous people who populated the Western Hemisphere from the Arctic to Tierra del Fuego before the Conquest, 40 million resisted the genocide and survive today. The Europeans not only killed those Indians who resisted their colonization, but the introduction of foreign disease alone accounted for close to a million deaths in the early years of the Spanish conquest. Though it drew little interest... ... Equality†. < http://www.greatdreams.com/pablo.htm> (23 May 2004). Marcos, Our Word is Our Weapon (New York: Seven Stories Press, 1998), 2. Marcos, Our Word is Our Weapon (New York: Seven Stories Press, 1998), 13. John Ross, Rebellion from the Roots (Monroe, Maine: Common Courage Press, 1995), 120. Blake Bailey, â€Å"A Chiapas Decade: Zapatistas Perspective†. (23 May 2004). Marcos, Our Word is Our Weapon (New York: Seven Stories Press, 1998), 190. Blake Bailey, â€Å"A Chiapas Decade: Zapatistas Perspective†. (23 May 2004). â€Å"Why We Reject the San Andres Accords† (22 May 2004). (22 May 2004). (22 May 2004).

Do you consider the metrics organizations measure to be valuable Essay

In order to develop a valuable HR metrics/performance measurement system it is imperative that organizations focus on their competitive strategy and operational goals, and should clearly define what employee competencies and behaviors are required to attain the above objective. (Becker, Huselid, & Ulrich, 2001, p. 52) Metrics are valuable if the actions and decisions which develop the metrics also develop the firm’s strategic objective. For example, if we take a sales team and a product development team, the metrics measured would be slightly different. A sales team directly affects revenue by its selling effort. Revenue, or sales time margins, might be a good metric for the sales force. The product development team also affects revenue, but less directly and less immediately. Near-term revenue is a reasonable metric, but the firm may also want to use another metric, such as customer satisfaction, to represent long-term revenue. The firm might also include metrics such as cycle time, development cost, and synergies with other products in the line. The team can affect these directly and, if they are chosen carefully, the actions the team takes to affect these metrics are the same actions that produce long-term profit for the firm. (John R. Hauser and Gerald M. Katz, 1998, p. 7) Another way to add value to metrics that organizations measure is to align it with corporate and business strategy. When a company decides to change its goals, the metrics should also change accordingly. For instance: A bank decided to shift the focus of its retail business from service to sales. Though the key performance drivers of the firm was now, increased cross selling to customers, teller product knowledge and sales skills, it still used service related metrics and continued practices like; hiring based on service competencies, low pay and benefits for teller, service based training programs etc. Due to this disconnect between firm’s new goals and outdated performance measurement metrics, the bank failed to achieve its sales and profitability targets. (Becker, Huselid, & Ulrich, 2001, p. 33) HR Metrics generally measure efficiency (time and cost) and the effectiveness of certain activities. The traditional metrics such as head count, turnover, and time to fill is being expanded by the use of KPIs that align with corporate strategies. This is building the credibility of HR and increasing its value by fostering partnership with senior management. By selecting meaningful and effective KPI’s HR is able to link its activities with the firm’s performance and communicate it in financial/business terms (Mello, 2011, p. 30). Measuring valuable metrics leads to the measurement of those HR decisions and outcomes that get the highest rate of return. For example: In the case of Sears, the HR managers used a seventy item survey, which they then distilled down to ten items as their measure of â€Å"compelling place to work.† These ten items were later consolidated along two dimensions – employee attitude towards the job and towards the company. This kind of measurement gave the company an explicit way to assess how well it was realizing its vision of being a â€Å"compelling place to work.† (Becker, Huselid, & Ulrich, 2001, p. 116) Therefore, the metrics that organizations measure does have value only if its results provide meaningful input into subsequent decisions and contribute to more effective performance evaluation.

How Does Shakespeare Use Representations of Speech and Other Dramatic Effects to Introduce Iago’s Character?

Shakespeare portrays Iago’s character in the play ‘Othello’ with villainous content by using dramatic effects and specific representations of speech in order to engage the audience to witness this deceitful, dishonest and disturbing man. Iago portrays himself as an innocent and rejected man with the use of powerful and emotive language such as ‘despise me’ and ‘abhor me. ’ The abrupt language used by Iago enables the audience to witness his disgust after Roderigo accuses him of withholding some information from him about his own finances.Iago acts the innocent and threatened character by stating ‘if ever I did dream of such a matter, / Abhor me. ’ The phrase ‘abhor me’ is a use of hyperbole used by Iago, where he exaggerates the issue of not being trusted by Roderigo. Here, the audience is able to see how Iago exaggerates things to a great level and it allows them to believe Iago will behave in this way for the m ajority of the play.Connotations of jealousy are revealed frequently throughout the play, especially within Iago’s first speech between himself and Roderigo, of how he was dismissed as lieutenant in favour of ‘Michael Cassio, a Florentine-/ A fellow almost damned in a fair wife. ’ Here, Iago claims that Cassio will have a wondering eye and is likely to stray from his job, proving how untrustworthy he is. He claims Cassio ‘nor the division of a battle knows/ More than a spinster, unless the bookish theoric. Shakespeare’s powerful use of imagery and asyndetic listing here, when Iago refers Cassio to a ‘spinster,’ reveals connotations of him being an inexperienced soldier as much as a spinster woman is inexperienced in love. The use of asyndetic listing also infers jealousy as Iago is listing the many reasons why Cassio should not have been promoted. The term ‘bookish theoric,’ refers Cassio to be an inexperienced and unknowled geable man on the battlefield, except from the theory he learnt about war in books.Here, the audience can witness Iago’s jealousy, which foreshadows the vengeful acts he performs later on upon certain characters within the play. Juxtaposition is also used when Iago describes to Roderigo the many reasons why Cassio should not be lieutenant, as he claims Cassio’s soldiership is ‘Mere prattle without practice’ compared with he who is ‘worth no worse a place,’ claiming he deserves no lower rank than lieutenant and subordinate to Cassio. This, aswell as showing jealousy, reveals Iago’s blunt arrogance towards being cast aside for the promotion. This may enable the reader to both take pity on him and understand his upset of being verlooked, or disagree completely and believe he is too confident for his own good. Shakespeare introduces Iago as a master of manipulation in the sense that he dominates the conversation when speaking to Roderigo.Th is may be because Roderigo is seen as Iago’s right hand man and is easily manipulated into believing and sympathising with Iago because of the way Othello treated him. In response to Iago’s speech that is full of connotations of jealousy and deceit about the dismissal of the promotion, Roderigo responds by stating ‘by heaven, I rather would have been his hangman. This enables the audience to see how honourable and trusting Roderigo is to Iago as he does not question the latter of how he may be wrong and also does not judge Iago’s aggressive nature towards Cassio and his experience in battle. The metaphorical use of the phrase ‘I rather would have been his hangman,’ is largely ironic as this, again, foreshadows Iago’s actions later on within the play upon those who, in particular Othello, deceived him. Aswell as the manipulation Iago empowers over Roderigo, he also has a financial hold upon him.Roderigo uses the simile ‘as if the s trings were thine,’ where he states that Iago has been using his money as if it were his own. In response to Roderigo’s accusation, Iago replies by saying ‘Sblood, but you will not hear me. ’ Instead of apologising to Roderigo for abusing his trust in looking after his money, he accuses Roderigo of not listening to him. It is here that Iago begins his long speech revealing his jealousy and he was betrayed, allowing the topic of the theft of the money to be forgotten.Shakespeare allows the audience to witness another vengeful side to Iago where he says the promotion seems to stem from favouritism and academic prowess rather than seniority, in which he believes there is no reason to love the moor. After Roderigo claims he would ‘not follow [the Moor],’ Iago responds by saying he will ‘follow [Othello] to serve [Iago’s] turn upon him,’ meaning he will eventually get his own back and will not ‘truly’ follow him due to the pain and deceit this has caused him. The phrase ‘Were I the Moor, I would not be Iago’ infers that Iago would not want to be himself if he were the Moor as he is of lower status.Iago would also not be true to himself he were sucked into the Moor’s ways, so he would continue to serve Othello, but will conceal his true feelings. Shakespeare also portrays Iago’s bitter behaviour when he declares to Roderigo, ‘in following him, I follow but myself,’ meaning he will look after his own interests instead of doing what is best by the Moor, which also portrays him as a self-serving character. His self-serving character is proven in the scene two when informing Othello of Roderigo spreading foul reports about the general. He claims Roderigo ‘spoke such scurvy and provoking terms against [Othello’s] honour.Iago’s double dealing nature proves he is untrustworthy, deceitful and a trouble stirrer, which is ironic as previously he was speaking of how he was treated unkindly and believed Othello was the deceitful person within the issue of the lieutenant promotion. The manipulative power Iago has over Roderigo must be strong if he is unaware of the great stirring Iago is conducting behind his back. Iago’s true representation is best portrayed by Shakespeare with the use of degrading, vulgar and taboo language in order to cause trouble when informing Brabantio of Desdemona’s deceitfulness in order to take revenge upon Othello.Upon arriving at his house, Iago orders Roderigo to ‘poison [Brabantio’s] delight†¦ incense her kinsmen†¦ Plague him with flies†¦ throw such changes of vexation. ’ These dynamic imperatives reveal connotations of rather harsh pain, suffering and destruction, enables the reader to visualise the two men trying to cause much distress, worry and anger to Brabantio before informing him of his daughter’s disappearance. Iago can be seen as a very self-centred character as the revenge he wants to be conducted upon Othello, means another person, Brabantio, will also be hurt during this vengeful act.It also shows how Iago enjoys causing much chaos and mayhem amongst people to witness their reactions for entertainment, and to possibly show he does not want to be the only character who has been deceived. After Brabantio calls out to the two men, Iago immediately uses his vulgar language to explain who Desdemona is with when stating ‘you have lost half your soul†¦ an old black ram is tupping your white ewe. ’ At first Iago portrays his sorrow towards the senator when saying ‘you have lost half your soul’ as if he pities him. The vulgar description ‘an old black ram is tupping your white ewe’ reveals rather degrading and racist imagery.The ‘black ram’ is in reference to the moor, portraying him to be a dirty, old man who is having relations with a pure and innocent â⠂¬Ëœwhite ewe’ which is in reference to Desdemona. The audience can see that this use of zoomorphism infers rather negative qualities about the moor before he has even been introduced into the play. The use of zoomorphism occurs often throughout the first act when Iago graphically describes the sexual relationship between Desdemona and Othello to her father. Iago states to Brabantio that his ‘daughter and the Moor are now making the beast with two backs. The constant use of animalistic imagery and reference to specific animals, infers that the two characters are having a very sexual relationship and may not be together for love. This phrase is also a use of antithesis as the ram and ewe differ completely, similarly to how Desdemona and Othello differ in race and ethnicity. The degrading language used reveals Iago’s total disregard for Brabantio’s feelings and status in society, proving once again the manipulative nature Iago has and the enjoyment he receiv es when causing someone else great distress.Shakespeare also uses religious imagery within the play when Iago declares to Brabantio: ‘the devil will make a grandsire of you. ’ This imagery can also be seen as racial as the devil was often depicted as black, which proves he is referring Othello to the devil. Once Brabantio finds his daughter is in fact missing from his house, Iago decides this is the time to flee, showing his distrust to Roderigo by leaving him to fend for himself.He claims ‘it seems not meet, nor wholesome to my place, to be produced†¦ against the moor,’ where he means he cannot be seen by Brabantio as it may threaten his official position if he is brought forward as a witness against the Moor. Iago, and his double dealing ways, tells Roderigo that he ‘must show out a flag and sign of love. ’ The metaphor used by Iago here, conveys to the audience that Iago will support Roderigo from a distance but will not support him in person, but he later informs Othello of Roderigo’s supposed deceitful ways.Shakespeare uses a variety of different language techniques in order to portray Iago’s villainous character with such content. Zoomorphism is used frequently when Iago is referring to Othello which shows his racist and vulgar language, especially when describing the sexual relationship between Desdemona and Othello. The audience is able to see how Iago revels in the mayhem and distress he causes amongst characters including Brabantio. This shows the cruel and manipulative streak he has.

A Rose for Emily Character Analysis

Miss Emily Grierson, the protagonist of William Faulkner’s â€Å"A Rose for Emily,† is an unusual character in the sense that she is depressed, withdrawn, and ill. Isolated in her father’s decaying mansion in Jefferson, Mississippi, unwilling to accept the passing of time, Miss Emily shows several symptoms of a mental illness. Throughout the story, Miss Emily is living all alone (except for her servant, Tobe) in her deceased father’s decaying mansion. Miss Emily’s story is told by the townspeople, who are very interested in the unusual traits that Miss Emily shows. Miss Emily refuses to change with the town and the times, and stubbornly clings to the past. She is a lonely woman because her father scared all of her suitors away when she was younger. All alone and mentally ill, Miss Emily shows that she is mentally sick through her sad, stubborn efforts to cling to the past. Miss Emily shows her first signs of being unable to change with the times at the beginning of the story, when she refuses to pay her taxes and give her house a mailbox. The members of the Board of Alderman visit Miss Emily to collect her taxes, she is very offended at the action. Miss Emily insists that she is not required to pay taxes in the city of Jefferson and that the officials can speak with Colonel Sartoris about the issue. However, at the time of this conversation, Colonel Sartoris has been dead for nearly a decade. Miss Emily struggles with moving forward with time because she does not want to change. She does not want to face the fact that she is all alone and unhappy. Miss Emily is unable to cope with the loss of her father, who was the only man in her life, and this is the main cause of Miss Emily’s mental illness. The story then jumps forward about thirty years, and the townspeople recall another incident of Miss Emily being visited by town officials. At this time, Miss Emily’s father, Mr. Grierson, has just passed away, and there is an awful smell coming from the mansion. Judge Stevens, the town mayor who pity’s Miss Emily decides to solve the problem by sprinkling lime in her yard, rather than to confront her. At this point in the story, the townspeople feel sorry for Miss Emily because she is thirty years old, and still single because her father never allowed her to date or marry. The next day, the women from Jefferson pay a visit to Miss Emily to offer condolences from her father’s death. Miss Emily refuses to admit that her father is dead, and holds on to the body for three days before finally turning it over for the funeral. The smell coming from the Grierson home, most likely from her father’s decaying corpse, shows Miss Emily’s inability to let go of the past and move on with the future. Later in the story, Miss Emily becomes very friendly with a construction foreman, Homer Barron. The townspeople assume that Miss Emily is spending time with this gentleman because she was never allowed to date when her father was alive, and the pity her because Homer is below her social class. As Miss Emily and Homer Barron continue to see each other, Miss Emily goes to the local drugstore to purchase arsenic, with no explanation. The next day, the package is delivered to her home with a note saying the arsenic is for rats. After Miss Emily purchases a sliver toilet set that is monogrammed with Homer’s initials, the townspeople assume that Miss Emily and Homer have gotten married. Soon after, Homer comes home one day, and never leaves again. Miss Emily’s appearance soon decays along with her home. No one from the town ever saw Miss Emily or Homer again, until her death at age seventy-four. When the townspeople come into the Grierson home for the funeral service, the townspeople find a room that appears to have been untouched for a number of years. Inside the room, the townspeople see Homer Barron’s dead corpse laid in the bed with an iron gray hair on the pillow next to him from Miss Emily’s latter part of life. Miss Emily was unable to admit to the loss of both her father and Homer Barron because she had a hard hold on the past, and refused to let go of it until she finally died. Miss Emily was a sad character, because she was depressed, mentally ill, and unable to grasp the passage of time. It is seen by the townspeople through her actions that she was very sad and lonely, and willing to go to great lengths to keep from being alone. Faulkner showed the struggle that Miss Emily had with this through her lack of upkeep to her home, her inability to change with the town of Jefferson, and her refusal to let go of her deceased loved ones.

French Fishtail Braid

Demonstration speech I. Introduction A. Greeting and hook: Most of you probably already know how to do a simple braid and maybe some of you can do a French Braid, but do you know how to french fishtail braid? B. Thesis: Today I will show you how to do a French fishtail braid. C. Credibility statement: I personally love to do this braid because it’s intricate looking but easy to do. I have done it many times and really enjoy doing it. D. Main points: First I will talk about preparing the hair, then I will discuss the process of French fishtail braiding.I’ll give some helpful tips and finally I will show you a finished braid. II. Body (Transition statement: To prepare for this hair design, you are going to need some supplies) A. Getting the supplies, brushing hair and damp vs. dry hair 1. What you will need. a. A brush to detangle. b. One pony tail holder. c. A mirror. d. Some bobby pins to pin away stray hairs. e. Hair spray 2. To begin preparing whoever’s hair yo u’re braiding, start by brushing or combing the hair. 3. It doesn’t matter if the hair is dry or wet. But it is easier to braid wet hair because it doesn’t have so many flying pieces. Transition statement: Once the hair is prepared, let’s move on to the process of braiding. ) B. How to begin the braiding. 1. Gather a small handful of hair from the back center of the head, as though starting a classic French braid. 2. Separate the hair into two sections. 3. Take a skinny strand of hair from the right side of the face, pull it back and cross it over to join the left hair section 4. Take a skinny strand of hair from the left side of the face, pull it back and cross it over to join the right hair section. 5. Repeat steps 3 and 4 until all hair is incorporated into the two sections.You may now pull the rest of your hair into a ponytail or continue braiding the â€Å"tail† part of the braid. 6. Take a skinny strand of hair from the right section, cross i t over to the left section and pull tight. 7. Take a skinny strand of hair from the left section, cross it over to the right section and pull tight. 8. Repeat steps 6 and 7 until all hair is braided. Secure the end with a hair tie. C. Tips and tricks 1. You can put the hair band on your wrist before you start, that way all you have to do is slide it off your wrist and it’s right there when you need it. . A spritz of hair spray as you go helps keep the braid neat while you keep working. 3. For a messier look, tease your hair before braiding. 4. Doing the fishtail braid while your hair is wet will give it a firmer grip, creating a more precise braid. 5. Try a fishtail braid bun if your hair is long. Start the braid and then wrap it in a bun. 6. For a Katniss Everdeen look from Hunger Games, start French fishtail halfway up one side of your head and wrap it down the other side. 7. For thicker hair, consider using thicker strands for better control. III. Conclusion Transition sta tement: Now you can see that creating a French Fishtail Braid is a simple variation of the regular French Braid. A. Main points: Don’t forget, when you are creating your own Fishtail French Braid, remember these tips; 1. Get your supplies all out and ready before you begin. 2. Practice using two instead of three strands of hair to accomplish the braid. 3. Wet hair is a great tip to keep the braid neater and finish it all off with hair spray. B. Closer: and as we come to an end I hope that I was helpful and that you all have a good understanding of how to do a french fishtail braid.