Saturday, August 31, 2019

Life Dosen’t Frighten Me Essay

The speaker takes on the stance that she is fearless against common fears in life She deals with her fears in an imaginary sort of way. She faces them with a magic charm ‘ that she keep[s] up [her] sleeve, not in a realistic way by marching up to them and facing them with courage, for example. The author denies that she actually has any fears. Magic, the way she deals with her fears , is not real therefore I believe she is in denial of her fears I don ‘t think the author is afraid of what anything in the actual poem I think that she has probably already faced and conquered these particular fears or been subjected to them at some point already in her life. This is why she does not fear them because they are not unknown. The author should not be afraid of these fears because they are mostly childhood fears I think she strongly refused to be afraid of them because they are childish fears If the author was actually afraid of shadows, noises, ghosts, dogs being alone, stranger s, and boys, I ‘d take it that she was very childish in her manners and had not been exposed to much in her life . While most children fear these things initially , they grow up and overcome those fears as they face life. I think that if the writer were to be afraid of these , she may possibly be classified in a stereotypical manner of a young girl , but certainly not a woman , especially in the twenty first century where woman ‘ suggest strength and power almost equal to that of man. However, girl ‘ still holds the stereotype of weaker frailer, and in need of being protected (from things such as fears I do not find it interesting at all that of these things frighten the speaker. I think the speaker is trying to be convey strength, but it is such an immature strength , that it is a very weak argument. According to the fifth stanza , the speaker seems to be saying that boys are nasty brutes who pick on the girls who appear to be extremely girly. The speaker probably fits in physically and stereotypically with the children , but mentally, emotionally, and intellectually she is older since she can detach herself from life . She is more artistic and free in that sense than her peers. Other indicators that the speaker is fearless is how she makes the ghosts go away I go boo. Make them shoo ‘ and her sense that anything is possible I can walk the ocean floor. And never have to breathe. Strangers in the dark frighten me slightly as do panthers, but only if they are loose.

Friday, August 30, 2019

A Street Car Named Desire

A Streetcar Named Desire – Final Assessment 1 . The title A Streetcar Named Desire holds both literal and figurative meaning. Blanche DuBois takes an actual streetcar named â€Å"Desire† to transport her to the home of her sister. Blanche is literally brought to the home of the Kowalski's by â€Å"Desire,† but she is also brought there by her very own desire. Blanche's sexual intimacies held with many men has ruined her reputation and driven her out of her home town. Blanche is longing and wishing to start her life over in the town ofElysian Fields with her sister Stella. She feels that everyone in this town will accept her because they are unaware of her secrets and terrible reputation. Blanche is confident in keeping her past a secret and portraying herself to be such a respected and lady-like woman. 2. Blanche DuBois in this novel could be best described as a tragic hero. She is very capable of great deeds but is destined to fail due to such circumstances beyo nd her own control and fatal flaws.Blanche throughout the play is very fragile and delicate after the tragic death of her husband leaving her with the biggest flaw of desire. Blanche after the tragic death of her husband is in great search for a man who will fulfill her desire however, she seems to never get enough. Blanche held many intimacies ruining her reputation and soon left her home town to go live with her sister Stella in Elysian Fields. Blanche trying to portray herself as a respectable lady slowly reveals her secrets without any intentions.Blanche during her stay in New Orleans is in search of respect, love, and care returning to the traditional wants and needs of a woman during her youth time period. Blanche is not used to the way of life in the world during present time. Vanity soon falls into a fantasy that settles in her mind as delusion. Her vanity gets in the way of her love life, leads her to tell lies and believe them, and ultimately leads to her rape carried out by Stanley and resulting in her biggest fall yet. A Street Car Named Desire Blanche arrives in the New Jersey apartment that is owned by the Kowalskis – in particular, her sister Stella and his brother in law, Stanley. Armed with her striking features, poise and seeming forceful characters, Blanche can immediately relay what her character is all about – power, feminism, liberalism, and absurdity.In general, she serves as the epitome of a new-age woman who has led her life badly. Her arrival immediately relegates the persona of her pregnant career-less sister, Stella, as a submissive, dependent, and traditional woman. With regards to first impressions, while Blanche can be viewed with envy, antagonism, or admiration, one can only offer sympathy and frustration to Stella.As for Stanley, he is pretty much the male counterpart of Blanche. He is the embodiment of brutality, abuse, responsibility, sensuality, and excessive power which often exists in many patriarchal societies. Like me, any person who has respect for women would surely hate what he d oes to Stella. Being ignorant of the truth behind the real life of Blanche, Mitch, like Stella, is another pitiful character.b. Discuss the presence of reality & illusion in the play. How is it represented?The sense of reality is presented as a matter of conflict and question not only in the story’s plot but also through its characters. To start with, Blanche lived her life masked by the illusion she creates in order to free herself from the dreadful results of her wrong doings. Stella also lived in an illusion where she regarded domestic abuse as a typical fraction of Stanley’s love for her.Mitch also fell into a whirlwind of illusions that Blanche created. Basically, Stanley is probably the only character who is in touch with reality. The play started with an illusion that Blanche created and the quest for reality is the plot. In the end however, the submission of Blanche to illusion or madness became her reality.c. Do you think Blanche is crazy? Explain.Blanche was already at the brink of insanity prior to her brutal encounter with Stanley. Throughout the story, we can observe that Blanche has carefully crafted her own fantasy world through the characters that she tried to portray – as a distressed damsel, southern belle or the good school teacher. The way in which she tries to conceal her secrets and the lack of malicious intent to actually manipulate other people just demonstrated her inability to interact with others in a sane manner.d. Blanche’s first husband was homosexual (as was Tennessee Williams). Discuss the depiction of homosexuality in the play.Although heterosexual men like Stanley were unfairly portrayed as brutal, one can say that homosexuals were not depicted reasonably in the play as well. Homosexuality was portrayed through Allen Grey, the poet late husband Blanche.His disgust to himself and his guilt which prompted him to commit suicide proved that homosexuality was demonstrated as something that is devastating , disturbing, and self-destructing. For both Blanche and Allen, the effect was extensively disastrous as one died while the other resulted to rebellious madness.e. Is there any villain in the play? If there is, who is it? Explain.To a certain extent, both Blanche and Stanley can be treated as villains. Blanche struggled to ruin the seemingly â€Å"harmonious† life of Stella and Stanley. On the other hand, Stanley abuses her wife and also succeeds in crushing Blanche’s fantasies.f. Do you think Stanley actually harmed Blanche? Do you think she deserved it?The play implies that Stanley has raped Blanche. Regardless of any circumstance, there is no righteous justification for raping a woman. No matter how hideous one’s character may be, no one deserves to be raped.

Thursday, August 29, 2019

Andy Goldsworthy – Essay

Andy Goldsworthy Andy Goldsworthy is able to create something aesthetically pleasing or conceptually pleasing out of absolutely nothing. He takes what he can from the land and produces sculptures by melting ice together, collecting wood or piling rocks in unique ways. Andy Goldsworthy creates his art using his bare hands alone, and while the art is still standing, he creates his own significant places. His art would often erode or collapse but for the brief time they are standing, his creations show bure beauty and amazement. Andy attempts to get closer to nature in all of his artworks. He portrays to the audience the importance of nature by recreating the different sculptures to remind us of the beauty nature holds. â€Å" â€Å"As with all my work, whether it's a leaf on a rock or ice on a rock, I'm trying to get beneath the surface appearance of things. Working the surface of a stone is an attempt to understand the internal energy of the stone. †- Andy Goldsworthy Goldsworthy tries to keep things simple in what he does. He uses only the materials and tools he is provided with by nature. If it is snowing, he will use the snow as his material, if it is autumn he works with the colours of falling leaves, a falling tree is a source of twigs and branches. Goldsworthy works with the land and not against it. He believes that the he has to learn about the lands surroundings and portray them through his artworks so that when others see the art they instantly feel the emotions of what is around them. He causes us to get sucked into the nature of the artwork and its serenity. â€Å"At its most successful, my ‘touch' looks into the heart of nature; most days I don't even get close. These things are all part of a transient process that I cannot understand unless my touch is also transient-only in this way can the cycle remain unbroken and the process be complete. † -Andy Goldsworthy Touch is an important element in the process of Andy Goldsworthy’s art making. He likes to touch before he places any material in order to get connected with the piece and feel the energy of his artwork. He learns from nature and f the piece doesn’t fit right, it could all come crumbling down. This fragile art is what makes his art so interesting to viewers and is what holds to emotion of the piece. Andy often takes photos of his artwork just after he creates them. He then sells the photos and not the artworks as the artworks often erode or fall. In his photographs, he still manages to portray the emotion seen in all his works. In making this art Goldsworthy must be extremely patient and rely completely on nature. He has had to try again many times after something has not worked and his art has come crashing to the floor. The materials used are very delicate and need to be handled with care, but again, this is what makes his art so interesting and exciting. Andy believes in the way nature can teach you many things and overwhelm you with such grace and beauty. Each of Andy’s artworks provides a story or portrays information in order to make the audience wonder. Andy takes interest in creating land art because of the serenity he produces through nature and because of what he can learn from his art. He is interested in finding the figure or picture to suit that area. He uses subtle amounts of colours in his artworks to create a contrast in what is real and what is art. His artworks vary in size, they could cover large mounts of land or could just consist of a small rock pile behind a tree. The size will vary on what the atmosphere of the land holds. Goldsworthy just works with what he has. Every choice counts in his artworks and he has to take his time to create them but in the end, what he produces is magnificent. Emily Kame Kngwarreye- Emily Kame Kngwarreye is an aboriginal artist who strives on creating her work on the emotions and nature of the land. Her land and the closeness and connection she shares with it inspire her work. Emily is an Elder in Anmatyerre, her aboriginal community, and uses this cultural experience as a basis for her artworks. Her artworks are also based on her lifelong custodianship of the women’s dreaming sites in her clan country Albalkere. The beliefs in the dreamtime stories that have been passed down by ancestors and portray them in her artworks. It was her Dreaming that was the source of the creative power, of her knowledge. So profound was her identification with Alhalkere that it infused her life and her belief system. Alhalkere was the source of her paintings. Even physically, Emily's pierced nose bore homage to the ancestor Alhalkere, a pierced rock standing on the Country of the same name. Emily believed purely in this ancestor and gained the knowledge for her paintings form her belief. | Emily tried to convey her land through her art by using colours and symbols in her artworks. Because of her strong Aboriginal connection with the land, she presented this as her significant place and acknowledged this throughout all of her artworks. Often she would use materials found in the land such as what she painted on or with and sometimes even painted using her hands, but mostly she used paint and a brush. The colours she used were to portray her land and symbolize her connection with the ‘Sunburnt’ country. She would use colours such as warm yellows, reds, pinks and orange to portray her land and chose to represent the nature of the land through rough strokes and dots. Usually she painted what came to mind when she thought about her dreamtime stories or chose to tell the story in her artwork using a number of colours and figures. Her land is what is most important in her belief system and she cherishes her connection with nature and the dreamtime stories. In her artworks, each action is carefully chosen to portray her belief in the land. They demonstrate the connection between Aboriginals and their nature. Emily’s art also displays the relationship between Indigenous Australians and the dreamtime stories they tell which usually involve their land and ancestors. Emily’s art tells the story of her life. It displays her beliefs and inspirations and also the significance of the land in Aboriginal culture. So by looking at her artworks we feel an overwhelming respect for Emily and her heritage. We feel the landscape of her land and the hidden reasures that are held close to her community. Emily’s art displays a sense of pride for her land and helps us to convey the same proudness in our lives. Although some of her artworks display sadness and loss, most demonstrate beauty and love. This sense of happiness enters the viewers mid as soon as they set eyes on her artworks. This feeling is what Emily was trying to convey I her artworks. She tries to capture the unseen beauty of the land and reproduce it so that it is no longer hidden to the viewers eye. Emily paints out of pure adoration to her land.

Wednesday, August 28, 2019

Interactive Learning Environment Assignment Example | Topics and Well Written Essays - 1000 words - 1

Interactive Learning Environment - Assignment Example   MUVEs are typically viewed as a popular structure of multimedia-based entertainment. It has been apparently observed that MUVEs are broadly executed in the field of education. The relevance of MUVEs to a learner can be determined by focusing on its usage particularly in the area of education. In this similar context, MUVEs are enthusiastically employed in education for a broad assortment of reasons. The reasons include generating online communities for the learners in order to provide greater opportunities relating to their professional advancements, involving in science-based activities with the intention of fostering communally responsive behaviors and supporting the learners to promote their moral as well as social developments through enrichment of societal cultures or cultural values. In addition, MUVEs are also used in education for delivering an environment of programming as well as collaboration, artistically discovering new mathematical perceptions and most importantly e ngrossing in any sort of scientific inquiry. The educational based MUVEs are specially designed for the learners in order to support their conceptual understanding along with inquiry-based learning. The different facets of MUVEs that comprise accessing diverse virtual contexts, establishing effective communication with other participants and interacting with various modernized digital artifacts ultimately prove to be quite relevant for a learner to advance his or her career in the field of education (Dieterle & Clarke, n.d.).  

Business Planning Essay Example | Topics and Well Written Essays - 500 words

Business Planning - Essay Example In this case, the action of the employees is intrinsic for the success of the plan since the type of businessi idea involves a one-on-one conversation with the customers. 3. Fixed prices for renting: considering the state of the industry, owning and renting a car, the business idea is considered strong since the involved customers are made aware of the prices. The prices are fixed since there are less external influences on the prices such as weather. 1. High product pricing: Botflex plans to offer high quality services to the boat owners and the tenants thereby leading to the high product pricing. Because of the need for offsetting the high production cost associated, the business finds it difficult to charge low prices. This acts as a weakness of the company since most of the potential customers are medium income earners. 1. Chance for entry into new market: There are few corporations dealing in the same products thereby presenting an opportunity for entry into new market. The company can establish its critical operation to other new areas because of the higher economies of scale associated with venturing. 2. Collaboration with other companies dealing in the same products: There are many companies which recognize the good reputation held by a company, successful in making people rent ships. This means that there are chances for the company reducing the associated costs through collaborating with other recognizable companies. 1. Escalating prices of boats: The escalating prices bears chances for inefficiencies in the production process of the company considering that the prices of raw material for making boats are on the rise. 2. Trademark infringements: Trademark infringement is just like another threat which usually faces newly established company. The company branding is susceptible to cases of illegal use of trademark especially by the competitors or other newly rising

Tuesday, August 27, 2019

National Cholesterol Education Program Essay Example | Topics and Well Written Essays - 1000 words

National Cholesterol Education Program - Essay Example Additional factors include age, a family history of heart disease, and being male. The risk of heart disease is the main reason why cholesterol level alertness is required. Heart disease, also known as cardiovascular disease (CVD) or coronary heart disease (CHD), is defined as any disorder, which impairs the normal functioning of the heart (Gandelman, 2006). Such disorders include arrhythmias, heart attack (myocardial infarction), and the various kinds of cardiomyopathy and angina. According to Barrett (2006), heart attack is ranked one among the most common causes of death in the United States and stroke is a close third. Epidemiological surveys demonstrated that there is a continuous correlation between CHD risk and serum total cholesterol levels over a broad range of cholesterol values (Grundy et al., 2004). High-risk and very high-risk people are individuals who have over 20% chance of heart attack within ten years (Barrett, 2006). The 2004 ATP III guideline regarding the said individuals state that drug therapy should be definite at 130 mg/dL (milligram per deciliter) cholesterol levels and it should be optional between 100 to 129 mg/dL levels (Barrett, 2006). This was a major change from the 2001 recommendation. Now, the goal for LDL-lowering therapy for all high-risk patients is a LDL-C level of less than 100 mg/dL (Grundy et al., 2004). According ... The ATP reports identified low-density lipoprotein cholesterol (LDL-C) as the main target of cholesterol-lowering therapy since "Many prospective studies have shown that the high serum concentrations of LDL-C is a major risk factor for coronary heart disease (CHD)" (Grundy et al., 2004). Cholesterol-lowering therapy involves statins and some clinical trials that tested the efficiency and effectiveness of these drugs are as follows. In a Heart Protection Study (HPS) conducted in the United Kingdom involving 20 536 adults, aged 40 to 80 years and at high risk for a CVD event, the patients were randomly allocated to 40 mg simvastatin or placebo daily (Grundy et al., 2004). The results demonstrated that in patients treated with simvastatin, all-cause mortality was significantly reduced by 13%. Moreover, "Major vascular events were reduced by 24%, coronary death rate by 18%, nonfatal myocardial infarction + coronary death by 27%, nonfatal or fatal stroke by 25%, and cardiovascular revascularization by 24%" (Grundy et al., 2004). On the other hand, the Prospective Study of Pravastatin in the Elderly at Risk (PROSPER) examined the efficacy of pravastatin treatment in older people with or at high risk of developing CVD and stroke. A total of 5804 subjects aged 70 to 82 years, with history of vascular disease or CVD risk factors, were randomly assigned pravastatin or placebo treatment. The follow-up averaged 3.2 years. Results showed that baseline total cholesterol ranged from 150 mg/dL to 350 mg/dL and prasvatatin reduced LDL-C levels by 34%. Major coronary events such as nonfatal myocardial infarction and CHD death fell by 19% whereas CHD mortality fell by 24%. The authors of PROSPER concluded that statin therapy can be extended to

Monday, August 26, 2019

NONE Essay Example | Topics and Well Written Essays - 500 words - 2

NONE - Essay Example The theory of conspicuous consumption is evident in the lives of very many people today. For instance, many renowned celebrities today such as rappers, singers, actors, sports personalities, deejays, and socialites among others are known to make a lot of money. These celebrities do not shy from spending their money lavishly in ways that are intended to provoke the envy of other members of the public just as stipulated in Veblen’s theory of conspicuous consumption. They simply do this as a means of displaying their superior socio-economic status and letting the world know that they are economically powerful. For example, popular celebrity actor Jennifer Aniston passed by a New York lighting store and spent $ 20,000 on lights for her mansion in Los Angeles. While in Paris, socialite Kim Kardashian spent more than $ 100,000 on buying less than seven handbags for herself. Victoria Beckham was also recorded as having spent more than $ 1.5 million on clothes, sunglasses, shoes and b ags. Other conspicuous spenders include Brad Pitt who spent more than $ 10,000 at once just buying boy’s clothes. The fact that the above mentioned celebrities go on these spending sprees conspicuously and end up attracting the attention of members of the public on their spending abilities proves that Veblen’s theory of conspicuous spending is still relevant today because it is evident in the spending habits of a group of people who wish to maintain a certain social status. According to Veblen’s theory, this social class of super rich people came into sight as an outcome of the accumulation of wealth during the Second Industrial Revolution. That is the same case with the people who conspicuously spend money on luxury items today. They usually accumulate their wealth through various ventures that they engage in. After accumulating their wealth, they apply it as a way of publicly displaying their social and economic power. This is

Sunday, August 25, 2019

A model of Christian charity Essay Example | Topics and Well Written Essays - 750 words

A model of Christian charity - Essay Example Human beings have a tendency to manipulate things in their favor, they take the smallest chance they have and grab the opportunity to live with someone else’s glory for them. John Winthrop made speeches to bring people towards God and reconcile them with God. He came up with strategies make his mission a success, which involved his metaphorical city on hills. The Americans used this concept to magnify themselves become the world’s chosen nation. A model of Christian charity was a sermon delivered by john Winthrop; this was done on board the Arbella in 1630. In the sermon, his aim was to show the true value of puritan faith. The crowd on board was approximately 300 people, all these people were convinced by John Winthrop’s sermon and would soon become the first population of Massachusetts who believed that they were an experiment of freedom and independence in religion. At this time, religious communities were so possessive that people were not given the freedom t o worship in any way they want, they were tie to certain rules within which they were to abide. The sermon convinced all the 300 people that they lacked religious freedom and that they should join the puritan religion, which would give them the freedom they lacked. So those who were aboard the arbella were the first of their kind, they were the first puritan community to reach North America. They had with then the Massachusetts Bay colony charter, which they intended to take to Salem in Massachusetts. The mission was of so much importance to the puritans in Massachusetts. In Britain, however this was seen as an opening to further trading opportunities and chances for expand their colonial posts; the puritans on the other hand were on a mission from God and had no any ill motives. This mission was to test the faith of the puritans; it would really convey their intentions and see if they were genuine or had ill motives, like their counterparts in Britain1. American Exeptionalism, The Jeremiad, And the Frontier: From the Puritans to the Neo-Con Man, is an article written by William Spano, tells how Sacvan Bercovich’s summary helped to understand the concept of the puritan religion. Bercovitch explains that the puritans are like the Jews in the Old Testament who claimed to be God’s chosen people; the puritans were convinced that their movement from Europe was a new revolution to the church. They thought of it as a new inaugural moment for a providential history, this was mainly to rectify the world that had moved away from their creator, and to claim it back. They were on a mission to save humanity and re-establish their relationship with God. They thought they were the tool for reconciliation just like the Jews of the Old Testament united humankind to God. The puritans’ mission in Massachusetts was the ultimate test to see if they were really, God’s chosen people, and a success in the mission would mean that they were indeed the chosen people of God. It is now more than four centuries since the sermon was made and we still see the traces of this experiment, the politicians use it every day, they, however, do not use it to describe America and its role in the global society. The phrase city on a hill is a legend used by American history to refer to the sermon of john Winthrop. The Americans have lived to believe that the sermon in a way insinuated that they were God’s chosen country, in 1961; American president John F Kennedy made a speech in which he referred to Americans as having their eyes on the leadership so that there are no any cases of bad leadership. He referred to it as the city on the hill and everyone looked upon it, meaning that the whole world had their eyes on America. The aim of this speech was to tell Americans that they should be good role models to other countries since they are perceived to be the chosen country, hence should look after the world. This greatly shows the American exeptio nalism. When Winthrop talked about the city on the

Saturday, August 24, 2019

Chinas Speedy Development in the Past Three Decades Essay

Chinas Speedy Development in the Past Three Decades - Essay Example Domestic policies have seen China’s economic development rise and continue to grow, even as other large world economies experience negative or stagnant growth. These policies opened up China to foreign trade and investment leading to a fast-growing economy in the recent decades; moreover, the domestic policies supported industrialization and structural change stimulates growth. They aim at developing strong and sustained investments that are driven at the very low levels, thus empowering the poor and uplifting their financial status (United Nations, 2012 p. 39). Effective management and proper implementation of the laid down policy frameworks have lead achievement of substantial strides in the developing China’s economy. The formulation of domestic policies established reforms in various sectors of the economy such as agriculture, industry, trade and foreign investment, which has also seen economic growth and human development. Reforms in the agricultural sector alleviated extreme poverty and food shortages; food prices also fell as the agricultural income was on the rise. In the industrial sector, there was large-scale privatization of enterprises owned previously owned by the local government. This encouraged growth of the private sector, and increased their output and increased the revenue to the economy. Initially, China’s economy centrally controlled, vastly inefficient and isolated from the global economy but with reforms to policies on trade and foreign investments, the economy improved to achieve a steady growth rate each year (Sahoo et al, 2010 p. 3).

Friday, August 23, 2019

A Metacognitive Exercise Essay Example | Topics and Well Written Essays - 4250 words

A Metacognitive Exercise - Essay Example Reflecting on the modules and the readings, is that language and literacy learning is both overwhelming and, surprisingly, well-researched. Overwhelming because the depth of research is staggering, from the selection of reading texts to a child’s stages of cognitive development, to the variables affecting interpretation and meaning. This initial sense of being overwhelmed, however, later gives way to a sense of security as the readings come together to form a more comprehensive whole. To be sure, there are theoretical disagreements. There are areas in need of additional research. That said, there really is a sufficient groundwork, in both theoretical and practical terms, with which to plan meaningful literacy lessons and programmes. The text emphasised the significant effects of word choice in the narrative text. The choice of words such as "reared" and "crushed" and the use of punctuation such as "Thud!" truly affected the mood and the feeling conveyed by the text. As a menta l exercise, I arbitrarily changed some of the words in order to see how the meaning might be altered; the results were quite significant. In sum, from the point of view of a student or a writer, I find the concepts of metalanguage and social purposes of text very helpful both in terms of understanding a text and in terms of creating a text. Though seemingly intuitive, these concepts add very much to the understanding of language, linguistic features, and meaning. To this regard I have the initiative to improve myself by answering the following activities: Activity: Describe the genre used by the seven-year-old child in the following text. List the features in terms of use of verbs, general and specific participants and descriptive words and statements. What understandings of the convention of written language does she demonstrate "I was going Dawn cabell terast on my Big Bieck. It was a Stiep Hill and my brakes pat up when I was haf the wai dan the hill and I broacd my coliaBone and I had to to go to the hosPtall to get a slliea on it. Its getting beta, ten I can ride I't a gain" Answer Using what I have learned from Green and Campbell, I recognized the genre of the text as a narrative. It tells the story of a seven year old boy in a sequential manner- precisely how Green and Campbell defined narratives. It also uses past tense form of verbs and makes use of the linking verb "and" to denote what happened next. It can also be recognized that the text is full of grammatical errors such as spelling and punctuation. However, it can be seen that the child is able to use the basic Subject - Object construction with the verb in between. The text displays the " how you pronounce it is how you spell and write it" system. Entry 2: Being particularly interested in writing, I found the work by

Thursday, August 22, 2019

The Responsibility Project Essay Example for Free

The Responsibility Project Essay In viewing a short film Table Guardians in The Responsibility Project website, organizational issues were displayed. The short film acted out a community coffee shop that different groups of individuals came and gone. An early aged male engaged in conversation with a mid-aged female requesting that she oversee his belongings and table while he quickly went to the copy shop a block away and ensured her that he will return quickly in a matter of minutes, 10 minutes; 12 minutes max. The women, although partially hesitant, agreed to watch over his table and belongings that included a personal computer and writing supplies. As time passed, several individuals attempted to make use of the crowded coffee shop table; however, the women overseeing the table informed those individuals that table was taken and the young man will soon return. After the women waited for over an hour guarding the table, she was asked if she was leaving her table by another women and she explained to her that she would have been gone, but she is overseeing the table across the way for a gentlemen. The women offered the exchange of overseeing the table for her table and she gladly accepted. After the exchange of four other overseers of this table, the gentleman finally returns. The fourth individual overseeing table doesn’t allow the gentlemen to easily recover his table and personal belongings. She informs him that the table is taken and belongs to a gentleman that will be coming back. He tries to explain that he is that gentleman and that he is back. She then requests proof of identity for the gentleman to recover his goods. Throughout the films entirety, it shows the communities ethical and moral reasoning of treating others as you wish to be treated by not leaving the gentleman’s personal belongings unattended as given word by a complete stranger initially. The integrity was kept throughout the exchange of overseers. The coffee shop employee kept his interests as a stakeholder by making the right decision to protect the employers’ expectations by statin g that he is not able to take responsibility of watching the table. By doing so the employee alleviated any possibilities of liability to the employer. It was also noted in the short film that the consumers in the coffee shop showed ethical reasoning by respecting the issue at hand that  the table was taken and not causing conflict in the coffee shop although the tables were filled and that table was sitting empty unattended. The end of the short film showed the same situation appearing to repeat itself; however, it is unknown whether or not it will end the same if it were in a different community. Also the outcome will depend on the ethical and moral interests for individuals involved. It could result in stolen or damaged goods. External social pressures have an influence on organizational issues. For instance, if this community discussed previously in the busy coffee shop had different ethical and moral interests in the community, the gentleman leaving his personal belongings may not have been comfortable in leaving his belongings with a stranger nor would he have asked. It was the gentleman’s belief that his belongings will be in safe keeping. The gentleman was apparently comfortable with outside factors of his community’s environment and the people; therefore, comfortable with the individual in the coffee shop to oversee his belongings. The coffee shop does not function alone, it is the outside of the business that influences how business is carried out inside. The guardians of the gentleman’s belongings were polite and moral by overseeing his belongings. It was morally and ethically wrong for the gentlemen to have left his belonging with an individual for longer than he had given his word for. The coffee shop employee responded ethically to the women who wanted him to oversee the table while working by stating he could not take responsibility while working. External social pressures can create a downside to organizations if social critics are not considered in organizations because consumer’s today is more â€Å"socially† aware. By organizations considering social pressures, this may assist in gearing their organization or business on the right direction for success. Concerning personal decision making, external social pressures may change decisions by simply the pressures of another outlook on the situation. An organization can simply apply pressure to have someone select their organization by offering free tutoring to an enrolled student or a business offering free gym membership for a year with purchase of insurance plan. Social pressure comes in numerous forms. The short film Table Guardians did not clearly show any legal issues per say; however could have resulted a legal issue if the employee decided to watch the gentleman’s belongings while working. Instead, the employee stated that he was could not oversee the table because liability reasons. Should the employee decide to watch table and the gentleman’s belongings came up stolen or damaged, it would have been a liability to coffee shop owner. The employee made the ethical decision. Overall, the short film addressed responsibility ethically, morally, and legally. Ethically is protecting concepts of right or wrong. Morality is more of the personal characteristics of interests and decision making. Ethics and mortality are subjective because no two individuals think alike. The legal system retains general humanities ethics; otherwise, we will suffer the consequences. References The Responsibility Project. (2008). Retrieved from http://responsibility- project.libertymutual.com/films/table-guardians#fbid=S14kx8DovBx

Wednesday, August 21, 2019

My Most Personal Place Essay Example for Free

My Most Personal Place Essay White blank walls, white cold tile floor, tucked in the basement away from my seven other roommates was my new bedroom. The only natural light in the room coming from the window the size of a picture frame. Moving into a new and unfamiliar place can be unsettling and exciting. I went to work moving my things in and making this 10 by 10 white empty box my new room. After two short days I completed my decorating and was thrilled with the outcome. The ceiling of my bedroom was outlined with white christmas lights twinkling in unison. In the middle of the ceiling hung a round yellow paper lantern that came from my sisters wedding; everytime I looked up I had good memories and it made me feel love and warmth. I placed glow-in-the-dark stars sparatically covering my ceiling so I felt I was falling asleep gazing at the stars in the sky. The room had a ledge about a foot higher than my queen size bed. I lined the ledge with vanilla-lavender scented candles that filled the room with an amazing aroma that calmed me as if it rocked me to sleep before bed. My bedding was gray and lavender colored with a pattern that looked as if it was paint brush strokes. I was not allowed to paint the walls so I covered them with colorful posters of bands and portraits I enjoyed. Between the posters were photos of my friends and family; photos that made me smile as I reminisced the funny memories I had with my loved ones. The tile felt like ice against bare feet. I purchased a gray shag rug that looked as if it came from the 1970s but felt soft and warm as it cushioned your feet from the cold, hard floor beneath it. My closet was immediately to the left after you entered my room and was hidden by a light purple curtian. There was a small, black mini fridge in the corner of the room beside the television. The door had two locks on it thanks to my dad, but it made me  feel safe.

Important Characteristics Of The Wigig Technology Computer Science Essay

Important Characteristics Of The Wigig Technology Computer Science Essay Wireless Gigabit is an up-and-coming technology expected to enable wireless connectivity of up to 7Gbps in data, display and audio applications. The organization sponsoring this technology is the Wireless Gigabit Alliance. Features of Wigig: Some of the important characteristics of the Wigig technology are listed below: Wigig is capable of providing a wireless network which its speed is up to 7Gbps, while the fastest current 802.11n has theoretically the highest speeds up to 600Mbps. WiGig is operated at 60GHz which allows a wider channel and supports super-fast transfer speeds. It can transfer data between 1Gbps to 7Gbps, 60 times more than Wi-Fi. Wigig can be able to support the Tri band devices. WiGig is a multi-gigabit communication technology which is an ideal standard for the use of streaming HD video so it can display full 1080 pixels of the PC to the TV via a wireless network. How does Wigig works: Wigig will primarily be used within a single room to provide wireless connectivity between home entertainment equipment. It will enable very fast data transfers and streaming media which is 10 times faster than the old wireless technologies, in addition to wireless connections for cameras, laptops. Deliverables Technical Issues Current and future expectations of WiGig deployment. Types of challenges or difficulties are there related to WiGig implementations. Kinds of organisations might need these new standards. Security Issues Discuss and analyse the security issues that might arise due to wide deployment of WiGig Alliance. (802.11 security issue and the Galois/Counter Mode of the AES encryption algorithm) Discuss and analyse cross layer security framework in Wireless LAN deployment. Is that framework will improve security in WLAN or not. Technical Issues Current Wigig deployment The industry standard relevant to Wigig is IEEE 802.11ad. Draft 1.0 of the specification was published in Jan 2011. Per the draft standard, signals will occupy the unlicensed 60 GHZ frequency band and all 802.11 ad-compliant devices will provide backward compatibility with 802.11 standard. As a result, tri-band devices will operate at 2.4, 5.0 and 60 GHz. The Wigig specification includes main features to maximize performance, minimize implementation complexity and cost, enable backward compatibility with existing Wi-Fi and provide advanced security. Key features include: Support for data transmission rates up to 7 Gbps. Wigig operates at 60 GHz band that means it has much more spectrum available, the channels are much wider, enabling multi-gigabit data rates. Wigig defines 4 channels, each 2.16 GHz wide which is 50 times wider than the channels available in 802.11n. Seamless switching between 2.4/5/60 GHz bands Based on IEEE 802.11, Wigig provides native Wi-Fi support and enables devices which has tri-band radios to be able to transparently switch between 802.11 network operating in any frequency band including 2.4/5/60 GHz Support for beamforming, a technology which maximize the signal strength and enable robust communication at distances beyond 10 meters. WiGig is integrated a technology, called Beamforming. It allows the radio beam is shot to the right target with the best performance; minimize waste in the process of transmission. Thus, WiGig uses energy more efficient than traditional Wi-Fi connection. Beamforming employs directional antennas to reduce interference and focus the signal between two devices into a concentrated beam. This allows faster data transmission over longer distances. Beamforming is defined within the PHY and MAC layers. During the beamforming process, two devices establish communication and then fine-tune their antenna settings to improve the quality of directional communication until there is enough capacity for the desired data transmission. The devices can quickly establish a new communications pathway using beams that reflect off walls when an obstacle blocks the line of sight between two devices or if someone walks between them. http://genk2.vcmedia.vn/N0WoyYblO3QdmZFKPMtKnadHAHTevz/Image/2012/04/2_6a565.jpg Advanced security using the Galois/Counter Mode of the AES encryption algorithm. AES-GCM is an authenticated encryption algorithm designed to provide both authentication and privacy. Developed by David A McGrew and John Viega, it uses universal hashing over a binary Galois field to provide authenticated encryption. GCM was designed originally as a way of supporting very high data rates, since it can take advantage of pipelining and parallel processing techniques to bypass the normal limits imposed by feedback MAC algorithms. This allows authenticated encryption at data rates of many ten of Gbps, permitting high grade encryption and authentication on system which previously could not be fully protected. Different types of layers take part in the working of the wireless gigabit technology, physical layer (PHY) deals with all the devices of low and high power and maintain the status of communication. Protocol adaption layers (PALs) are being developed to support specific system interfaces including data buses for PC peripherals and display interfaces for HDTVs, monitors and projectors. Supplements and extends the 802.11 Medium Access Control(MAC) layer and is backward compatible with the IEEE 80211 standard Power Management Wigig devices can take advantage of a new scheduled access mode to reduce power consumption. Two devices communicating with each other via a directional link may schedule the periods during which they communicate; in between those periods, they can sleep to save power. 802.11 ad draft standard is compared to other wireless technology http://images-news.easyvn.net/upload/2011/12/08/article/cong-nghe-khong-day-60-ghz-cho-docking-usb-hdmi_3.jpg Wigig in future WGA has announced the launch of a new wireless connection standard, Wigig 1.1 ready for certification. The Wigig 1.1 is added 2 new PALs specifications, the Wigig Display Extension (WDE) and Wigig Serial Extension (WSE) to supplement the previously published Wigig Bus Extension (WBE) and MAC/PHY specifications. Structure of Wigig Wigig is defined in 2 layers based on IEEE 802.11. They are Physical and Medium Access Control layers. These layers enable native support for IP networking over 60Ghz band. They make simpler and less expensive to produce devices that can communicate over both Wigig and existing Wi-Fi using tri-band radios (2.4GHz, 5GHz and 60 GHz). http://farm3.static.flickr.com/2390/5791077356_c2146fb4f0.jpg Physical Layer The physical layer of the 802.11 ad standardized 2 wireless data exchange techniques: Orthogonal frequency-division multiplexing (OFDM) Single carrier (SC) The 802.11ad divides the 60GHz band into four 2.16 GHz wide channels. Data rates of up to 7 Gbits/s are possible using OFDM with different modulation schemes. A single channel version for low power operation is available and can deliver a speed up to 4.6 Gbits/s. These wide channels enable WIgig to support applications that require extremely fast communication, such as uncompressed video transmission. The PHY in 802.11ad is split into Physical Layer Convergence Protocol (PLCP) and the Physical Medium Dependent (PMD) sub layers. The PLCP parses data units transmitted/received using various 802.11 media access techniques. The PMD performs the data transmission/reception and modulation/demodulation directly accessing air under the guidance of the PLCP. The 802.11 ad MAC layer to great extend is affected by the nature of the media. For instance, it implements a relatively complex for the second layer fragmentation of PDUs. Medium Access Control (MAC) layer Wigig shares MAC layer with existing 802.11 networks enables session switching between 802.11 networks operating in the 2.4 GHz, 5GHz and 60 GHz bands, resulting in uninterrupted wireless data communications. The 802.11 ad MAC layer has been extended to include beamforming support and address the 60 GHz specific aspects of channel access, synchronization, association and authentication. Protocol Adaption Layer (PALs) PAL is a layer added to network transmissions to help adapt to older standards. It allows wireless implementations of key computer and consumer electronics interfaces over 60GHz Wigig networks. The version 1.0 A/V and I/O protocol adaption layer (PAL) specifications have been developed to support specific system interfaces including extensions for PC peripherals and display interfaces for HDTVs, monitors and projectors. The Wigig Bus Extension (WBE) Define high-performance wireless implementations of widely used computer interfaces over 60GHz. Enable multi-gigabit wireless connectivity between any two devices, such as connection to storage and other high-speed peripherals The Wigig Display Extension (WDE) Support wireless transmission of audio/visual data Enable wireless DisplayPort and other display interfaces that include the High-bandwidth Digital Content Protection 2.0 feature. Offers key A/V applications, such as the transmission of lightly compressed or uncompressed video from a computer or digital camera to an HDTV, monitor or projector. http://img84.imageshack.us/img84/2195/fig2m.jpg Modulation Coding Scheme (MCS) The specification supports two types of modulation and coding schemes, which provide different benefits. Orthogonal frequency-division multiplexing (OFDM) supports communication over longer distances with greater delay spreads, providing more flexibility in handling obstacles and reflected signals. The single carrier, suited to lower applications, achieves a data rate up to 4.6 Gbits/s, while OFDM enables 7 Gbits/s. Usage Models Wigig has a high compatibility and is used for many purposes. Wigig can act as an alternative method which is used for replacing old connectivity standards such as: USB, DisplayPort, PCIe and HDMI. In addition, it is backward compatible with most devices which using 802.11 connectivity in the 2.4 GHz and 5 GHz bands. The main function of Wigig is to connect home entertainment devices together tablets, smartphones, PC, TV and more. http://images-news.easyvn.net/upload/2011/12/08/article/cong-nghe-khong-day-60-ghz-cho-docking-usb-hdmi_2.jpg Challenges or difficulties are there related to WiGig implementations. The biggest technical challenge is that these networks will operate in much higher frequencies, around 60 GHz. The higher the frequency is, the greater the propagation loss over distance. Another challenge is 60 GHz radio are absorbed by wood, bricks, human body and particularly paint are far more opaque to 60 GHz waves. Thus, Wigig is most suitable for in-room applications. Attenuation of various materials by frequency Besides that, the beamforming of compliant equipment needs to be within line of sight of receiving devices in order to work well. Even a person stepping between two communicating devices can break the signal. With these weaknesses, they will prevent Wigig from being implemented popularly in the future. Moreover, most today devices only support 802.11 a/g/n; it will take time to replace all these devices with new devices which support 802.11ad standard. Kinds of organisations might need these new standards WiGig is a multi-gigabit communication technology which is an ideal standard for the use of streaming HD video so it can display full 1080 pixels of the PC to the TV via a wireless network. In addition, its speed is up to 7 Gbps which is very useful for so many organizations such as: Multimedia organization (newspapers, advertisement, movie) Financial organization (Bank, office, tax) Education organization (TAFE, university) Medical organization (Hospital) IT organization (Intel, Dell, Apple etc.) Government Military Security Issues Due to Wigig is based on IEEE 802.11 standards; it has the same security issues with 802.11 a/b/g/n. Easy to access Wireless LANs are easy to find. To enable clients to find them, networks must transmit Beacon frames with network parameters. The information needed to join a network is also the information needed to launch an attack on a network. Beacon frames a not processed by any privacy functions, which means that your 802.11 network and its parameters are available for anybody with an 802.11 card. Attackers with high-gain antennas can find networks from nearby roads or buildings and may launch attacks without having physical access to your facility. Solution: Enforce Strong Access Control Ensuring that wireless networks are subject to strong access control can mitigate the risk of wireless network deployment. Networks should place access points outside of security perimeter devices such as firewalls, and administrators should consider using VPNs to provide access to the corporate network. Strong user authentication should be deployed, preferably using new products based on the IEEE 802.1x standard. 802.1x defines new frame types for user-based authentication and leverages existing enterprise user databases, such as RADIUS. Rogue Access Points Easy access to wireless LANs is coupled with easy deployment. When combined, these two characteristics can cause headaches for network administrators and security officers. Any user can run to a nearby computer store, purchase an access point, and connect it to the corporate network without authorization. Rogue access deployed by end users poses great security risks. End users are not security experts, and may not be aware of the risks posed by wireless LANs. Many deployments that have been logged and mapped by war drivers do not have any security features enabled, and a significant fraction have no changes from the default configuration. Solution: Regular Site Audits Like any other network technology, wireless networks require vigilance on the part of security administrators. The obvious way to find unauthorized networks is to do the same thing that attackers do: use an antenna and look for them so that you find unauthorized networks before attackers exploit them. Physical site audits should be conducted as frequently as possible. Unauthorized Use of Service Several war drivers have published results indicating that a clear majority of access points are put in service with only minimal modifications to their default configuration. Unauthorized users may not necessarily obey your service providers terms of service, and it may only take one spammer to cause your ISP to revoke your connectivity. Solution: Design and Audit for Strong Authentication The obvious defence against unauthorized use is to prevent unauthorized users from accessing the network. Strong, cryptographically protected authentication is a precondition for authorization because access privileges are based on user identity. VPN solutions deployed to protect traffic in transit across the radio link provide strong authentication. MAC Spoofing and Session Hijacking 802.11 networks do not authenticate frames. Every frame has a source address, but there is no guarantee that the station sending the frame actually put the frame in the air. Just as on traditional Ethernet networks, there is no protection against forgery of frame source addresses. Attackers can use spoofed frames to redirect traffic and corrupt ARP tables. At a much simpler level, attackers can observe the MAC addresses of stations in use on the network and adopt those addresses for malicious transmissions. Attackers can use spoofed frames in active attacks as well. In addition to hijacking sessions, attackers can exploit the lack of authentication of access points. Access points are identified by their broadcasts of Beacon frames. Any station which claims to be an access point and broadcasts the right service set identifier (SSID, also commonly called a network name) will appear to be part of an authorized network. Attackers can, however, easily pretend to be an access point because nothing in 802.11 requires an access point to prove it really is an access point. At that point, the attacker could potentially steal credentials and use them to gain access to the network through a man-in-the-middle (MITM) attack. Solution: Adopt Strong Protocols and Use Them Using methods based on Transport Layer Security (TLS), access points will need to prove their identity before clients provide authentication credentials, and credentials are protected by strong cryptography for transmission over the air. Session hijacking can be prevented only by using a strong cryptographic protocol such as IPsec. Using strong VPN protocols which require the use of strong user authentication with 802.1x. Traffic Analysis and Eavesdropping 802.11 provides no protection against attacks which passively observe traffic. The main risk is that 802.11 does not provide a way to secure data in transit against eavesdropping. Frame headers are always in the clear and are visible to anybody with a wireless network analyser. Security against eavesdropping was supposed to be provided by Wired Equivalent Privacy (WEP). However, it protects only the initial association with the network and user data frames. Management and control frames are not encrypted or authenticated by WEP, leaving an attacker wide latitude to disrupt transmissions with spoofed frames. Solution: Perform Risk Analysis When addressing the threat of eavesdropping, the key decision is to balance the threat of using only WEP against the complexity of deploying a more proven solution. If wireless LAN is being used for sensitive data, WEP may very well be insufficient for your needs. Strong cryptographic solutions like SSH, SSL, and IPsec were designed to transmit data securely over public channels and have proven resistant to attack over many years, and will almost certainly provide a higher level of security. Key Problems with WEP Repeat in key stream which allows easy decryption of data for a moderately sophisticated adversary. Weak implementation of the RC4 algorithm leads to an efficient attack that allows key recovery Subject to brute force attacks (Short Keys) Easily compromised keys (Shared keys/No Key management) Message modification is possible No user authentication occurs Subject to Man in the Middle attacks WPA Benefits Improved Cryptography Strong Network access control Will Support 802.1x, EAP, EAP-TLS, Radius, and Pre-Placed Keys Key Management Replay Protection Provides for data and header integrity Flaws While (Temporal Key Integrity Protocol) TKIP (a message integrity check algorithm is to verify the integrity of the packets) Michael significantly improve WEP security, design limitations result in cryptographic weaknesses. Limitations of Michael to retrieve the keystream from short packets to use for re-injection and spoofing. WPA2 Benefits Strong Cryptography Support for Legacy Equipment Strong Network Access Control Will Support 802.1x, EAP, EAP-TLS, Radius, and Pre-Placed Keys Key Management Replay Protection Provides for data and Header Integrity Roaming Support Security issue There is a flaw that was discovered. It is called WPS (wireless protected setup); it is the little initial setup that most new/newer routers come with. The WPS is a button which we need to hit when we want to initially set up connection. That is the security flaw thats used now to crack wpa/wpa2. There is a free program to exploit this flaw (reaver) and it has about a 100% success rate in cracking wpa/wpa2. Galois/Counter Mode (GCM) GCM is a block cipher mode of operation providing both confidentiality and data origin authentication. It was designed by McGrew and Viega. Benefits Support communication speeds of 10 Gbps Provides strong encryption based on the Advanced Encryption Standard (AES) Be able to implement in hardware for performance and efficiency Security Issues GCM provides no message authentication There are some security issues if GCM mode is used incorrectly. GCM is not suited for use with short tag lengths or a very long message. The user should monitor and limit the number of unsuccessful verification attempts for each key. It is strongly recommended to use all 16 bytes for the tag, and generally no less than 8 bytes. The same length of tag must always be used for a given key. The initialization vector (IV) must be unique for each operation for a given key. Security is destroyed for all text encrypted with the same key if the IV is used for different plaintext. Using 12 bytes randomly generated IV is ok and so is a counter that is controlled over so that it can never be repeated. Cross layer security framework in Wireless LAN deployment Cross-layer design appears to be a suitable approach for future contributions in the framework of WLANs able to address emerging issues related to ever-higher performance, energy consumption, mobility. The single layer security is often inefficient and inadequate for provisioning secure data transmission in WLAN. In generally, the security of a network is determined by the security it has over all the layers. Thus, the cross-layer security framework needs to be proposed in WLAN. The security framework may support many components like intrusion detection system, Trust framework and adapted link layer communication protocol. In order to carry out practical cross-layer security framework in WLAN, we need to follow: Component based security: Security measures must be provided to all the components of a protocol stack as well as to the entire network. The developers should focus on securing the entire network. Robust, simple and flexible designs: Security mechanisms should construct a trustworthy system out of untrustworthy components and have the capability to detect and function when need arises. This should also support scalability. Various types of active and passive attacks have been recorded in WLAN A denial of service (DoS) attack: In DoS attack, a malicious node could prevent another node to go back to sleep mode which in turn causes battery depletion. Eavesdropping and invasion: If no sound security measures are taken, invasion becomes fairly an easy task due to wireless communication. An adversary could easily extract useful information from the unattended nodes. Hence, a malicious user could join the network undetected by impersonating as some other legitimate node, to have access to secret data, disrupt the network operations, or trace the activity of any node in the network. Physical node tampering leading to node compromising. Forced battery exhaustion of a node. Radio jamming at the physical layer. There are some types of cross-layer security Cross-layer security design for intrusion detection All approaches pertaining to intrusion detection schemes have been focused on routing and MAC protocols. The existing secure protocols or intrusion detection schemes are normally presented for one protocol layer. So, the effect of these schemes is sandwiched to attacks to a particular layer. They are seldom effective to attacks from different protocol layers; however, security concerns may arise in all protocol layers. It is necessary to have a cross-layer based detection framework that consolidates various schemes in various protocol layers. Cross-layer security design for power efficiency As previously mentioned, energy conservation is one of the primary concerns for sensor networks design, so it should be considered across protocol layers from the beginning stage through subsequent stages of the design to achieve the trade-off between energy consumption, network performance and complexity, and maximize the longevity of the entire network. Our cross-layer approach can achieve this while providing network security provisioning. For instance, the carrier detection is responsible for DoS attacks. A detrimental or malicious node can exploit then interplays in MAC layer to frequently request for channels. This not only prohibits other nodes from connecting with the destination, but also can deplete its battery energy due to frequent responses. To overcome this issue, the information can be collected from other layers and the detrimental node can be recognized and then be limited or isolated. Conclusion After analysing the security risks of WLAN and investigating the advantages of cross-layer security framework, I believe that the cross-layer design is a unique candidate to improve security in WLAN. Summary Wigig or 802.11ad based on the 802.11 standard is a new wireless technology which provides data rates up to 7Gbps over the unlicensed 60 GHz. It will primarily be used within a single room to provide wireless connectivity between home entertainment equipment. It will enable very fast data transfers and streaming media which is 10 times faster than the old wireless technologies. However, Wigig still has some challenges which are the limitation of propagation loss and distance. That is why it can primarily be used within a room or an office. But Wireless Gigabit Alliance claimed that Wigig can be used beyond 10 meters by using beamforming technology in the near future.

Tuesday, August 20, 2019

The Vietnam War: A Fight for Human Liberty and Freedom Essay -- Vietna

No war that the United States has ever fought has drawn so much heart-rending criticism than the Vietnam War. This war divided the United States as no war since the Civil War ever has. Citizens that favored the participation in Vietnam still argue their point of view with those that opposed the United States involvement in Vietnam. The Vietnam conflict started as civil war in the country of Vietnam, one that lies very far away from the United States in Indochina. Why did Americans sacrifice so many lives and so much money for a country so far away? Why did millions of Americans violently protest involvement in Vietnam? It has been twenty-six years since the last American soldier left Vietnam, and the United States has still not come to peace with the Vietnam experience. Despite the 58,156 American causalities, the 1.5 million dead in North Vietnam, the 924,000 Vietcong killed in the South, the South Vietnamese losses of 183,000 and the 120 billion dollars spent by the US in Vietnam, the United States was justified in its reasons for entering the Vietnam conflict (Edwards 10). Time has not altered the facts of why the United States chose to fight for freedom halfway across the world. Vietnam is a long narrow country in the China Sea that is in the shape of an â€Å"S.† Its total size is that of New Mexico, but it is much more populous with 47 million residents (Fincher 7). Vietnam is a land of thousands of small villages with many rice fields. Three out of every four Vietnamese live on the coast and all the major cities also lie there (Lawson 1). Vietnam has a monsoon climate, which consists of a hot wet season followed by a cooler dryer time. The average summer temperature in the South Vietnam ... ...nd freedom, which is still a just cause today. Works Cited Chomsky, Noam. Rethinking Camelot. Boston: South End Press, 1993. Dinh, Viet. â€Å"How We Won in Vietnam.† Policy Review. Dec. 2000-Jan. 2001. P.104-115. Dunnigan, James and Nofi, Albert. Dirty Little Secrets of the Vietnam War. New York: St. Maetin’s Press. 1999. Edwards, Richard. The Vietnam War. Vero Beach, Florida: Rouke Enterprises, 1986. Fincher, E.B. The Vietnam War. New York: Fraklin Watts, 1980. Herring, George. â€Å"Vietnam, American Foreign Policy, and the History.† Virginia Quarterly Review. Winter 90. p. 1-11. Kaiser, David. American Tragedy. Cambridge, Massachusetts: The Belkwap Press of Harvard University Press, 2000. Lawson, Don. The United States in the Vietnam War. New York: Thomas. Y. Crowell, 1981. Nickelson, Harry. Vietnam. San Diego: Lucent Books, 1981.

Monday, August 19, 2019

Essay on Control in Song of Solomon -- Song Solomon essays

Fight for Control in Song of Solomon       The idea of complete independence and indifference to the surrounding world, symbolized by flying, stands as a prominent concept throughout Toni Morrison's novel Song of Solomon. However, the main character Milkman feels that this freedom lies beyond his reach; he cannot escape the demands of his family and feel fulfilled at the same time. As Milkman's best friend Guitar says through the novel, "Everybody wants a black man's life," a statement Milkman easily relates to while seeking escape from his sheltered life at home. Although none of the characters in the story successfully take control of Milkman's life and future, many make aggressive attempts to do so including his best friend Guitar who, ironically, sympathizes with Milkman's situation, his frustrated cousin Hagar, and most markedly his father, Macon Dead.    Guitar Bains, Milkman's best friend since childhood, serves as Milkman's only outlet to life outside his secluded and reserved family. Guitar introduces Milkman to Pilate, Reba, and Hagar, as well as to normal townspeople such as those that meet in the barber shop, and the weekend party-goers Milkman and Guitar fraternize with regularly. However, despite their close friendship, the opportunity to gain a large amount of gold severs all their friendly ties. Guitar, suspecting Milkman took all the gold for himself, allows his greed and anger to dictate his actions and sets out on a manhunt, ready to take Milkman down wherever and whenever he could in order to retrieve the hoarded riches. Guitar's first few sniper attempts to execute Milkman did fail; however, the ending of the novel leaves the reader with the imminent death of either Milkman or Guitar. Ironic that t... ... lives of the Dead family members; Milkman, unable to live any longer in an environment composed of animosity, drives him to leave his home and search for "his people." Serendipitously, although no single individual gains control of either Milkman's living or dead life, Milkman's need to escape from his collective family and surroundings unwittingly captures him and the life he so fervently aims to keep from the control of others.    Works Cited: Morrison, Toni. Song of Solomon. New York: Penguin Books, 1987. Schultz, Elizabeth. "African and Afro-American Roots in Contemporary Afro-American Literature: The Difficult Search for Family Origins." Studies in American Fiction 8.2 (1980): 126-145. Story, Ralph. "An Excursion into the Black World: The 'Seven Days' in Toni Morrison's Song of Solomon." Black American Literature Forum 23.1 (1989): 149-158.

Sunday, August 18, 2019

Ralph Ellisons novel, Invisible Man. Essay -- English Literature

Ralph Ellison's novel, Invisible Man. The unnamed, main character and narrator of Ralph Ellison's novel, Invisible Man, goes through the story being thrown from one ideology to another in search for a sense of individual truth. The narrator finds that following an ideology does not help him find individualism whatsoever but only confines what he can be. The narrator's grandfather gave him his first and most prominent ideology in which he were to follow. "Son, after I'm gone I want you to keep up the good fight. I never told you, but our life is a war and I have been a traitor all my born days, a spy in the enemy's country ever since I give up my gun back in reconstruction. Live with your head in the lion's mouth. I want you to overcome 'em to death with yeses, undermine 'em with grins, and agree 'em to death and destruction, let 'em swoller you till they vomit or bust wide open." In his last testaments, the narrator's grandfather is trying to give a guide to overcoming the white man oppression by pretending to enjoy attending to the white man's desires. Race st...

Saturday, August 17, 2019

Bead Bar

The primary objective would be to encompass the business processes and functionalities of Bear Bar enterprise into an information system which would manage all its resources and cover up the negative aspects of the system. All the internal and external factors which make the enterprise function in a diligent manner would be taken care by the proposed system. The information system would make the enterprise to flow in a planned, organized and decisive manner.Each department would be able to capture, nurture and share effectively valuable business information so as to remain synchronized with the latest events and decisions can be framed accordingly. Order tracking, fulfillment, inventory and supply dynamics can be managed optimally. Prior to outlining the input and output information, the system development life cycle must be in place so that the analysis is done accordingly. The correct nature of the inputs and the outputs would make the system design vary accordingly as it requires to capture the information and put it into a frame to interpret in a decisive manner to take further decisions.The systems development life cycle for Bead Bar is as follows: 1. Feasibility analysis: The new proposed system and the present working system are analyzed so that the ROI (Return on Investment) is obtained. The proposed system is further analyzed for economical, technical, schedule and other feasibilities so that it stands in front of all difficulties in the development of the project. The Bead bar enterprise’s key management people are involved in the process of feasibility analysis.All the inputs, outputs and external environment are studied in detail so that the underlying intricacies would be researched well for their impact and development. Inputs: Bead Bar’s inputs are in the form of company’s short and long term objectives, its financial base and credibility for years to come, its general strategic plans, consent of the advisors and directors, r isk handling strategies and many others. Outputs: The feasibility has outputs in the form of higher management approval for the sustenance of the systems development, its full length use to cover all business functions, risk mitigation strategies and many others.2. Systems planning and requirements gathering: After the system is thoroughly checked for all its inputs and outputs, the requirements phase takes the lead. All the key stakeholders of the departments and the users of the system must be taken into account for gathering the crucial departmental functions, requirements and its interaction with other departments to achieve the central goal of the enterprise. Input: It must be in the form of the users of the system who are better-off to understand and figure out the exact ground level happenings in the business.Their view of the workings of the enterprise must be captured so that appropriate implementation can be done. Output: The valuable information fetched from the users of the system must be given a representation and frame it accordingly to fix it into a system. 3. Systems Analysis and Design: Bead Bar’s system requirements are studied and the system is analyzed and designed accordingly. The flow of data is analyzed so that the system captures the entire business cycle and their functions.Inputs: It would come from the requirements gathering phase and the order of business flow. Outputs: It would result in helping the analysts and designers in the process of database handling and further development of the system. 4. Database Model: The database model for Bead Bar is as follows, which shows the interaction of the different entities of the business. Figure 1: UML Class Diagram 5. Coding: The above design is given a representation of the business and the various functions are finally implemented at this stage.Inputs: It is in the form of requirements gathered from the previous stages and the design documents. Outputs: It results in actual implem entation of the system so that it can be viewed physically. 6. Implementation and Training: This stage correlates with actual planting of the system at the Bead Bar so that the present system is replaced and the proposed system takes its place. The users must be trained to operate the business functions with the system, store and retrieve data whenever it is demanded.

Friday, August 16, 2019

Letter to the brazilian government regarding the amazonian rainforest

I am writing to you to express my views and opinions about the Amazonian rainforest and the way it's being exploited. I am fully aware that you, as a government, are being threatened to reduce the amount of trees you cut down from other countries; this letter may initially appear to be like those others, but I understand both sides of the argument, although I do strongly believe it is best that we protect the rainforest than destroy it. I do realize that you are desperately trying to develop into one of the world's most economically developed countries. Whilst destroying the rainforest would originally generate a huge income, I understand, the profits would not be as great if the natural resources were to be managed in a sustainable approach in the future. Amazonia will eventually be deprived of its resources at this going rate – the effects this will cause will be difficult to resolve. Firstly, Amazonia is a way of life to the indigenous people; they have lived in this rainforest for thousands of years. If you were to destroy Amazonia, these people would be forced to leave their homes as their homeland/habitat would be in the way of loggers, and legal legislations would not permit the locals to stay put, as they do not possess ‘ownership deeds', as you are aware of. This may cause more deforestation, as the tribes would have to find new areas in the rainforest to live – others may migrate (sometimes illegally) to other countries in South America or even around the world; so they will become more densely populated with mostly uneducated Brazilians, as, most of the indigenous people have never gone to school. At present, South America has an increasing population of roughly 371 million people. Notably, the most densely populated countries in South America are Brazil (186,112,794) followed by Colombia (42,954,279), Venezuela (25,375,231) and then Ecuador (13,363,593). Each of these countries are partly covered by the Amazonian Rainforest – if it were to be destroyed, a majority of these people would be likely to migrate to another country located in South America, probably a MEDC compared to the others, as it would be cheaper and easy to reach. By destroying the rainforest you would be putting your local civilization in jeopardy, just to make money, in which I would agree, this would improve the countries economy in the distant future – but it does not necessarily make this right. Not only would destroying the Amazonian rainforest have huge effects on the locals, the consequences of destroying it would make a global impact. Accordingly, the vegetation of the rainforest accounts for 20% of the world's supply of oxygen – which could be a cause for concern to the native mammals on our planet. If the trees and plants were to be destroyed the CO2 would also cause a great risk; being released into the atmosphere, as a greenhouse gas, will contribute massively to global warming. Our descendants will suffer from these effects; be witnessing flooding and climate changes worldwide, if you were to act irresponsibly and destroy Amazonia. Can you imagine your children being affected by this global impact? It surely must defeat the morals of destroying the Amazonian Rainforest in the first place. As you must be aware of, the rainforest's natural diversity is huge. It's home to over 1000 different tree species; 40,000 plants, 2. 5 million insects, 3000 fish, 1,300 birds, 440 mammals, 430 amphibians and 380 reptiles. Destroying the habitats of the wide variety of these species will cause a majority of them to become extinct, as most can't be found anywhere else in the world. It is because of the equatorial climate in your region of the world that these species exist, and the weather is perfect for them to survive and thrive. The plants, as you will know, oppose the potential in containing undiscovered medicines which can possibly cure fatal diseases; which could benefit the human civilization forever. This could possibly give you an alternative for making huge sums of money – extracting medicines that can cure world-wide spread diseases that will always be in demand. But on the other hand, destroying the rainforest will provide the world many valuable resources like hardwoods and building materials; which are imperative in global development. Your country would receive a substantial amount of money as these materials can be used for a lot of practical uses aswell – highlighting there world-wide benefits. Finally, destroying Amazonia would provide key professions, such as loggers, cattle ranchers and miners to the local people who seek employment which requires little/no education. This is important for them as they will be able to afford a better standard of life, in which their family will benefit from. But these people are only, however, interested in their own wealth fare – not the environment around them. They simply do not care about the millions of animals that will suffer from their actions – but it is you that can prevent this, or even just change these occurrences. However, this is understandable on their behalf; they need money to survive, but the reasons for deforestation are easily outshone by the fact that the rainforest needs to be preserved. In addition, those local people can capably make a relatively large amount of money if they were to work as an act of sustainable development. Simple farming methods could be taught to the local people, which are efficient in growing reasonable amounts of produce, time after time; these allotments would be placed in selected areas of the rainforest – therefore this allows different sections of Amazonia to be protected and local people can be provided with free knowledge and education, to benefit the quality of their produce and its efficiency of being more environmentally clean and effective. Mining companies could be restrained into only being able to mine only certain amounts/types of the minerals underneath the rainforest flooring, at different intervals during a year/month. Taxes can be installed on each ore the foreign companies extract, so the country itself would receive extra amounts of money from work they don't participate in, as their own resources are being disposed. Once theses mines have been exhausted – deprived of all their natural resources – the companies must reforest the area, to help repair the damage to the environment. This possible legislation can also be applied to the logging industries. The trees cut down should be replaced immediately by the seeds of that species – afforestation. This would at least enable the survival of the vegetation in Amazonia in the future. Also once again, it could be acceptable to place a tax on the more expensive tree species which are cut down, which would decrease the companies profits which may prevent them from cutting down so many of them; and the local governments would receive this money which could possibly increase their yearly revenue dramatically . Ecotourism will provide employment for the local people, but more importantly boost the economy, just like all of the other sustainable activities, but the difference would be; the beneficial improvement to the popularity and reputation of the rainforest. Amazonia's natural beauty will be appreciated as it deserves, with a minimal amount of deforestation, and a global demand to witness its magnificence, which will always be constant – fetching high prices from each tourist. The use of ecotourism could be extended to the creations of national reserves and parks, in and outside of Amazonia; which would provide a wide range of employment and the potential to be the most ‘exotic' of the world's national parks, which would make a visit there highly expensive and therefore profitable for the countries. By following these policies, horrific consequences are being prevented and compromises have been put into place to ensure that both groups of people, wanting to protect the rainforest and destroy the rainforest are happy with the agreement. If any of these legislations were to be broken then fines could be used to create negative publicity for the companies; which could decrease their popularity severely and damage the economical structure. In conclusion I strongly believe that you should try your up-most hardest to protect the Amazonian Rainforest. Whilst you have plenty of sustainable ways to provide your country with resources needed to develop efficiently, your local people can also benefit from the new legislations I strongly recommend you implement. If you were to decide to destroy the entire rainforest, global warming would endanger the world, and for that sole reason other countries would attempt to stop you, creating wars, in order to inevitably save the plant. Your only acceptable reason for cutting down the rainforest is to make money from the large amounts of natural resources you produce. But when the rainforest would be completely destroyed, you will have nothing that is valuable remaining. Moreover, the profit you would make from the various techniques of sustainable development, in a relatively short time period, at around a matter of a decade, would be greater than if you were to destroy the rainforest entirely. So you could receive a better ‘turn-over' from saving the planet, eventually. It is not essential that you totally cut down the rainforest. Destroying it will cause far more arguments and worldwide horror than leaving Amazonia to provide us with the resources required.

Thursday, August 15, 2019

Business Analysis. Introduction to data modeling

Before you sit down In front of the keyboard and start creating a database application, it is critical that you take a step back and consider your business problem-?in this case, the kitchen supply scenario presented in Lesson 2-? from a conceptual point of view. To facilitate this process, a number of conceptual modeling techniques have been developed by computer scientists, psychologists, and consultants. For our purposes, we can think of a conceptual model as a picture of the Information system we are going to build. To use an analogy, conceptual models are to Information systems what blueprints are to buildings.There are many different conceptual modeling techniques used in practice. Each technique uses a different set of symbols and may focus on a different part of the problem (e. G. , data, processes, information flows, objects, and so on). Despite differences in notation and focus, however, the underlying rationale for conceptual modeling techniques is always the Michael Bryon ([email  protected] Ca) Last update: 02-May-01 1 of 23 An Introduction to data modeling Introduction: The importance of conceptual 3. 1. 1. 1 Entities and attributes What is data modeling?A data model is a simply a diagram that describes the most important â€Å"things† in your business environment from a data-centric point of view. To illustrate, consider the simple RED shown in Figure 3. 1 . The purpose of the diagram is to describe the relationship between the data stored about products and the data stored about the organizations that supply the products. FIGURE 3. 1: An RED showing a relationship between products and suppliers. The rectangles in Figure 3. 1 are called entity types (typically shortened to â€Å"entities†) and the ovals are called attributes.The entities are the â€Å"things† in the business environment about which we want to store data. The attributes provide us with a means of organizing and structuring the data. For example, we need to s tore certain information about the products that we sell, such as the typical selling price of the product (â€Å"Unit price†) and the quantity of the product currently in inventory (â€Å"Sty on hand†). These pieces of data are attributes of the Product entity. It is important to note that the precise manner in which data are used and processed within a particular business application is a separate issue from data modeling.For example, the data model says nothing about how the value of â€Å"Sty on hand† is changed over time. The focus in data modeling is on capturing data about the environment. You will learn how to change this data (e. G. Process orders so that the inventory values are updated) once you have mastered the art of database design. Product Unit price Sty on hand Product Entity supplied by Cardinality Attributes Supplier Relationship Name Address A data modeled assumes that if the right data is available, the other elements of the application will fall into place effortlessly and wonderfully. For now, this is a good working assumption.Introduction: The importance of conceptual environment in which your wholesale company operates. However, it is easy to imagine a different environment in which each product is supplied by multiple suppliers. For example, many suppliers may carry a particular brand of wire whisk. When you run out of whisks, it is up to you to decide where to place your order. In other words, it is possible that a many-to-many relationship exists between suppliers and products. If multiple supplier exist, attributes of the product, such as its price and product number may vary from supplier to supplier.In this situation, the data requirements of a many-tomato environment are slightly more complex than those of the one-to-many environment. If you design and implement your database around the one-to-many assumption but hen discover that certain goods are supplied by multiple suppliers, much effort is going to be r equired to fix the problem. In addition to entities and attributes, Figure 3. 1 shows a relationship between the two entities using a line and a diamond. The relationship construct is used-?not surprisingly-?to indicate the existence or absence of a relationship between entities.A crows foot at either end of a relationship line is used to denote the cardinality of the relationship. For example, the crow's foot on the product side of the relationship in Figure 3. 1 indicates that a particular supplier may provide your company with overall different products, such as bowls, spatulas, wire whisks and so on. The absence of a crow's foot on the supplier side indicates that each product in your inventory is provided by a single supplier. Thus, the relationship in Figure 3. 1 indicates that you always buy all your wire whisks from the same company. . 1. 1. 3 Modeling assumptions The relationship shown in Figure 3. 1 is called one-to-many: each supplier supplies many products (where many me ans â€Å"any number including zero') but each product is supplied by one supplier (where â€Å"one† means â€Å"at most one†). The decision to use a nee-to-many relationship reflects an assumption about the business Herein lies the point of drawing an RED: The diagram makes your assumptions about the relationships within a particular business environment explicit before you start building things. The role of the modeled 3. 1. 1. In the environment used in these tutorials, you are the user, the designer, and the implementer An introduction to data modeling of the system. In a more realistic environment, however, these roles are played by different individuals (or groups) with different (programmers, database specialists, and so on) is that they seldom leave their busbies to communicate with end-users of the software they are writing. Similarly, it is generally safe to assume that users have no interest in, or understanding of, low- level technical details (such as the cardinality of relationships on Reds, mechanisms to enforce referential integrity, and so on).Thus, it is up to the business analyst to bridge the communication gap between the different groups involved in the construction, use, and administration of an information system. As a business analyst (or more generally, a designer), it is critical that you walk through your conceptual oodles with users and make sure that your modeling assumptions are appropriate. In some cases, you may have to examine sample data from the existing computer- based or manual system to determine whether (for instance) there are any products that are supplied by multiple suppliers.At the modeling stage, making changes such as converting a one-to-many relationship to a many-to-many relationship is trivial-? all that is required is the addition of a crows foot to one Introduction: The importance of conceptual end of the relationship, as shown in Figure 3. 2. In contrast, making the same change once you have im plemented tables, lilt a user interface, and written code is a time-consuming and frustrating chore. FIGURE 3. 2: An RED for an environment in which there is a many-to-many relationship between products and suppliers.Product Unit price Sty on hand The addition of a second crows foot transforms the one-to-many relationship into a many-to-many relationship. Supplier Generally, you can count on the lox rule of thumb when building software: the cost of making a change increases by an order of magnitude for each stage of the systems development lifestyle that you complete. An introduction to data modeling Introduction: The importance of conceptual 3. 1. 2. 1 Entities 3. 1 . 2 Data meddlers typically adopt a set of notational conventions so that their diagrams are consistent.For example, large IT organizations and consultancies typically adopt a methodology-?a set of tools and procedures for applying the tools that specifies the notation used within the organization. Enforcing standardiza tion in this way facilitates teamwork on large projects. Similarly, if a computerized software engineering (CASE) tool is used for conceptual modeling and design, notational conventions are often enforced by the software. What follows is a brief summary of the notational conventions that I use when drawing Reds.Keep in mind, however, that Reds are first and foremost a tool for communication between humans. As such, the precise notation you use is not particularly important as long as people can read and understand the diagrams. With experience, you will come to realize that differences in the shapes of the boxes and lines have little effect on the core concepts of data modeling. Entities are drawn as rectangular boxes containing a noun in singular form, as shown in Figure 3. 3. FIGURE 3. 3: An entity named â€Å"Customer†. CustomerYou will see later that each entity you draw ultimately becomes a table in your database. You might want to keep this transformation from entity to table in mind when selecting the names of your entities. For example, your entity names should be short but descriptive. 3. 1. 2. 2 Relationships A relationship between entities is drawn as a line bisected by a diamond. The diamond contains a verb (or short verb phrase) that describes the nature of the relationship between the entities, as shown in Figure 3. 4. Named relationships are used to make the Reds more readable.However, unlike entity names, relationship Ames never show up in the final database. Consequently, it does not really matter how you label your relationships, as long It can be argued that the term â€Å"method† is grammatically preferable. In Europe, for example, the term â€Å"method† tends to be favored. Introduction: The importance of conceptual Generally, Reds make certain assumptions about the reader's knowledge of the underlying business domain. FIGURE 3. 4: A relationship named â€Å"buys†. As the labels make the diagram easier to interp ret.To illustrate, consider the relationship between products and suppliers shown in Figure 3. 1 . The relationship is scribed by the verb phrase â€Å"supplied by'. Although one could have opted for the shorter relationship name â€Å"has† instead, the resulting diagram (e. G. , â€Å"Supplier has product†) would be more difficult for readers of the diagram to interpret. 3. 1. 2. 3 Relationship direction A notational convention supported by some CASE tools is to require two names for each relationship: one that makes sense in one direction (e. G. â€Å"is supplied by'), and another that makes sense in the opposite direction (e. G. , â€Å"supplies†). Although double-naming may make the diagram easier to read, it also adds clutter (twice as any labels) and imposes an additional burden on the modeled. Cardinality 3. 1 . 2. 4 One issue that sometimes troubles neophyte data meddlers is that the direction of the relationship is not made explicit on the diagram. Re turning to Figure 3. 1, it is obvious to me (since I drew the diagram) that the relationship should be read: â€Å"Product is supplied by supplier. Reading the relationship in the other direction (â€Å"Supplier is supplied by product†) makes very little sense to anyone who is familiar with the particular problem domain. As discussed in Section 3. 1. 1. 2, the cardinality of a relationship constrains the umber of instances of one entity type that can be associated with a single instance of the other entity type. The cardinality of relationships has an important impact on number and structure of the tables in the database. Consequently, it is important to get the cardinality right on paper before starting the implementation.An introduction to data modeling There are three fundamental types of cardinality in Reds: ; One-to-many -? You have already seen an example of a one-to-many relationship in Figure 3. 1 . You will soon discover that onto-many relationships are the bread an d butter of relational databases. One-to-one -? At this point in your data modeling career, you should avoid one-tone relationships. To illustrate the basic issue, consider the RED shown in Figure 3. 5. Based on an existing paper-based system, the modeled has assumed that each customer is associated with one â€Å"customer record† (I. . , a paper form containing information about the customer, such as address, fax number, and so on). Clearly, each customer has only one we automate the system and get rid of the paper form, then there is no reason not to combine the Customer and Customer Record entities into a single entity called Customer. Introduction: The importance of conceptual FIGURE 3. 5: An incorrect one-to-one relationship associated with Customer Record In many cases, one-to-one relationships indicate a modeling error. When you have a one-to-one relationship such as the one shown in Figure 3. , you should combine the two entities into a single entity. ; Many-to-many - ? The world is full of monotony-many relationships. A well-used example is â€Å"Student takes course. † Many-to-many relationships also arise when you consider the history of an entity. To illustrate, consider the RED shown in Figure 3. 6. At first glance, the relationship between Family and Single-Family Dwelling (SF) might seem to be one-to-one since a particular family can only live in one SF at a time and each SF can (by definition) only contain a single family. However, it is possible for a family to live in different houses over time.

Assess the Advantages of Judicial Precedent Essay

The first advantage of judicial precedent is certainty; this means the lawyers are able to predict the outcome of the case due to Judges following the same rules and the same Ratios this is a good thing as it means Lawyers could prepare clients for the worse or the best to the best of their ability, and this could save time and money as well. Sir Rupert Cross-Doctrine of precedent has a particular emphasis on rigidity and certainty. Another advantage is flexibility; the law is able to develop in ways that reflect social and technological circumstances and does not have to wait for the permission from Parliament, it also allows the common law system to respond to new situations like in Mcloughlin O’Brien’s case where the Supreme Court extended the law on nervous shock to cover new situations within the case. Consistency, this means that similar cases are dealt with in the same way, and this makes the law fair and credible and makes our legal system respected in other cou ntries. Another would be its real and reals with real life situations, case laws deal with situations that arise in practice – real facts in real situations – unlike statues and if an unforeseen situation arises, judges can refer to existing precedents and adapt the law to meet the new situation. Another advantage would be Original precedents, this allows for new or original precedents to be created and this occurs when there is no previous decision on the matter or case and this therefore means an original precedent therefore makes legal provision on a matter for which there was no previously no. In Gillick V West Norfolk and Wisbech Area Health Authority the House of Lords had to decide whether or not girls under 16 could be prescribed contraceptives without parental consent. This matter had not arisen before the courts before, and parliament had provided no guidance.