Investigate the root causes of major Engineering disasters that have Essay

Investigate the root causes of major Engineering disasters that have occurred since 1800 - Essay Example In engineering, most disasters that have occurred portray a possibility of overlooking one or more provisions of safety with some being caused by poor decision-making and ignorance. The Chernobyl Power plant disaster The Chernobyl Nuclear power plant disaster of April 26, 1986 although blamed on negligence on the part of operators had some engineering aspects that could have contributed in the disaster, in addition to the operation negligence. The Chernobyl plant used RBMK reactors that have been blamed for a number of negative features that may compromise the safety of the reactors and their operations. The RBMK reactors have neutron fields with high sensitivity levels towards movement of control rods, which results from having a high number of absorbers in the reactor core aimed at compensating for any extra reactivity (Malko, 1991). When some absorbers are withdrawn, especially affecting most of the absorbers in the peripheral zones, there results a local criticality. Moreover, RB MK reactors involve occurrence of huge positive reactivity that leads to a reduction of the period required to achieve stabilization of the power produced at the core to about 3 minutes (Medvedev, 1990). These factors make operations of a RBMK reactor problematic and uncertain in maintaining the safety of the reactor. Frankel (2010) observed that the Chernobyl reactor was designed to use graphite moderators that were typically unsafe, in addition to use of graphite rods. As a result, any possible loss of water in such a RBMK reactor posed great danger. Contrary to the operations of Pressurized Water Reactors (PWR), any water that circulates in the pipe network is only required to serve the purpose of cooling the reactor core only and not to moderate the core and cool it (Frankel, 2010). In PWR reactor cores, removal of the core cooling water would cause the entire chain reaction to abort. However in an RBMK-0100 reactor such as the one used in Chernobyl, in case water is lost due to closure of the supplying pumps as was the case, the graphite moderating rods continue to propagate and facilitate nuclear chain reactions (Frankel, 2010). Such mechanism, when considered alongside the loss of cooling water in the nuclear reactor core, would lead to overheating of the core in the shortest time possible. In such a case, the event of a core meltdown becomes the only possible event. In addition, in the Chernobyl RBMK reactors, the control rods were not designed as drastic safety features. Control rods are necessary for absorbing neutrons towards reducing or stopping chain reactions from taking place. However, in the Chernobyl RBMK reactors, control rods required about 20 seconds to reach the bottom of the core from their highest position (Medvedev, 1991). This was contrary to modern reactors that have well designed control rods, which  require one second or less, to reach the core of a nuclear reactor stopping any chain reaction. Therefore, in Chernobyl nuclear react or, the design and engineering of the entire core overlooked key safety mechanisms that could have prevented possible meltdown. The result of overlooking these safety considerations was the 1986 disaster. This was

Answer questions Essay Example | Topics and Well Written Essays - 1250 words

Answer questions - Essay Example d. Coffee prices are expected to rise rapidly in the next few months. Indicate the immediate Effect. e. Workers in the coffee industry form a trade union and succeed with claims for higher Wages. Answers: a) When a severe frost destroys much of the Brazilian crop the supply curve of coffee will shift to the left. It is assumed that the demand will remain the same. Therefore the market equilibrium will shift to the left. b) If coffee is shown to cause cancer in laboratory experiments on mice it is expected that the demand for coffee will fall down sharply. The supply for coffee is assumed to remain the same. The demand curve will shift to the right and the new market equilibrium will also shift to the right. c) If the price of tea declines sharply the demand for coffee is expected to fall. The demand curve will shift to the left and the equilibrium point will shift to the left. d) If the price of coffee is expected to rise in the next month, the demand for coffee will rise immediately . Therefore the demand curve will shift rightwards and the market equilibrium point will shift to the right. The other conditions are assumed to remain unchanged. e) If the workers in the coffee industry form a trade union and succeed with claims for higher Wages, then the price of coffee will rise. ... In your explanation you must refer to aspects such as: Demand, wants, needs and desires Determinants of demand and supply Demand versus quantity demanded Movement along versus shifts of the curves Equilibrium Price and Quantity Surplus vs. Shortage. Answer: A market is a place where buyers meet sellers. The households purchase the products of their needs from the sellers in the market and the sellers charge their price. The determinants of demand and supply are the price of the good, the price of the substitutes, the income of the consumers, and the anticipated price level of the future and tastes of the consumers. An increase of demand can take place if the income of the consumers rise, the price of the product itself falls. The following diagram shows the demand supply analysis of the chosen product. In this case it is assumed that the market is competitive and so the demand curve is horizontal. In this case a parallel shift in the supply schedule leads to lower demand (Michigan St ate University, n.d. p. 1). The quantity demanded has fallen to Q1from Q0. The price is remaining the same in the market. A leftward shift of the supply schedule lead to fall in quantity demanded. The following diagram provides a clearer picture. In this case the supply curve shifted to the left while the demand curve remained unchanged. The initial equilibrium in the market has fallen as a result. The new equilibrium quantity is at a higher level than the initial one while the new equilibrium price is at a lower level than the initial one (University of Pittsburg, 2012, p. 2). The point where the demand by the consumers is matched by the supplies of the producers is regarded as the equilibrium point. The following

Understanding Suicide Bombing With The Theory Of Symbolic Interactionism Essay Example for Free

Understanding Suicide Bombing With The Theory Of Symbolic Interactionism Essay

Callie Khouris Thelma and Louise - Moving Beyond the Male Experience E

Even in today's growing world of feminism, young girls, as well as grown women, are being taught by the media to organize their lives around men. Their needs, expectations, work schedules, ideas, and interests become second to the men in their lives. All too often the media associates power and status to men, only to strengthen the barriers between the male and female genders. Take for example Hollywood, where "women get only about a third of all movie and TV roles, and last year earned less than male actors in all age categories..."(Eby, 1). And even though gender should not be used as the determining factor of what one can and cannot do, Hollywood, as well as everywhere else, has proven that the old habits of gender discrimination die hard, if at all. Luckily, there exist screenwriters and filmmakers who aren't afraid to step outside the limitations of gender, stirring up some controversy. Callie Khouri, creator of "Thelma and Louise" is the exception to this rule. Awarded "Best Original Screenplay", the film challenges our preconceived notions of gender limitations by "giving a feminine twist to a pair of all too familiar Hollywood genres, the road picture and the buddy picture"(NY Times, 1991). The "road and buddy movie" usually calls for men in the lead roles, whereas "Thelma and Louise" called for Geena Davis and Susan Sarandon. A film such as this one allowed for two women to get into dangerous trouble, enjoy themselves, and "unmask the other sex"; actions normally reserved for men (NY Times, 1991). According to Ms. Khouri, the script of "Thelma and Louise" was infact, "a conscious effort to counter what [she] sees as Hollywood's tendency to limit women's roles to easily identifiable types such as bimbos, whores, and nagging wives"(NY Times, 1991). She therefore uses the characters in the movie not so much to prove a point, but instead to make a point. At the same time that Ms. Khouri is making her point, the movie becomes somewhat of a catharsis for women. "Thelma and Louise" is supposed to be "about what every woman knows"(Eby,4). Though rape is a major issue that is used in the movie, it is not supposed to be the only issue women relate to. The general comparison between the women on screen and the women in the audience should be the feeling of at one time or another having been threatened, having been treated as inferior, or having foun... ...y she begins to snap under the pressure. In one particular scene, the role reversal becomes most obvious to the audience. Louise finds out that Thelma has left JD alone in her hotel room with the money which Jimmy had brought them. By the time the girls make it back to the room, JD and the money are long gone. Louise comes to the realization that the control she once possessed has now escaped her. Thelma, who watches as her friend crumbles before her eyes, realizes that she needs to break free from her child-like persona and take control of the situation. Thelma takes on a new sense of responsibility and maturity. She gives Louise a chance to finally let her guard down. "This is a movie about the adventures of women, and that's rare. And that really sad that its rare and we can't think of another movie like this"(LA Times, 1991). Thelma and Louise was a movie written and produced to give women an opportunity to finally tell their story in a society where the media is all too often dominated by males. This was an opportunity to move females from the roles of girlfriend and side interest into the leading role. It is no longer about a man's experiences and a man's adventures. Callie Khouri's Thelma and Louise - Moving Beyond the Male Experience E Even in today's growing world of feminism, young girls, as well as grown women, are being taught by the media to organize their lives around men. Their needs, expectations, work schedules, ideas, and interests become second to the men in their lives. All too often the media associates power and status to men, only to strengthen the barriers between the male and female genders. Take for example Hollywood, where "women get only about a third of all movie and TV roles, and last year earned less than male actors in all age categories..."(Eby, 1). And even though gender should not be used as the determining factor of what one can and cannot do, Hollywood, as well as everywhere else, has proven that the old habits of gender discrimination die hard, if at all. Luckily, there exist screenwriters and filmmakers who aren't afraid to step outside the limitations of gender, stirring up some controversy. Callie Khouri, creator of "Thelma and Louise" is the exception to this rule. Awarded "Best Original Screenplay", the film challenges our preconceived notions of gender limitations by "giving a feminine twist to a pair of all too familiar Hollywood genres, the road picture and the buddy picture"(NY Times, 1991). The "road and buddy movie" usually calls for men in the lead roles, whereas "Thelma and Louise" called for Geena Davis and Susan Sarandon. A film such as this one allowed for two women to get into dangerous trouble, enjoy themselves, and "unmask the other sex"; actions normally reserved for men (NY Times, 1991). According to Ms. Khouri, the script of "Thelma and Louise" was infact, "a conscious effort to counter what [she] sees as Hollywood's tendency to limit women's roles to easily identifiable types such as bimbos, whores, and nagging wives"(NY Times, 1991). She therefore uses the characters in the movie not so much to prove a point, but instead to make a point. At the same time that Ms. Khouri is making her point, the movie becomes somewhat of a catharsis for women. "Thelma and Louise" is supposed to be "about what every woman knows"(Eby,4). Though rape is a major issue that is used in the movie, it is not supposed to be the only issue women relate to. The general comparison between the women on screen and the women in the audience should be the feeling of at one time or another having been threatened, having been treated as inferior, or having foun... ...y she begins to snap under the pressure. In one particular scene, the role reversal becomes most obvious to the audience. Louise finds out that Thelma has left JD alone in her hotel room with the money which Jimmy had brought them. By the time the girls make it back to the room, JD and the money are long gone. Louise comes to the realization that the control she once possessed has now escaped her. Thelma, who watches as her friend crumbles before her eyes, realizes that she needs to break free from her child-like persona and take control of the situation. Thelma takes on a new sense of responsibility and maturity. She gives Louise a chance to finally let her guard down. "This is a movie about the adventures of women, and that's rare. And that really sad that its rare and we can't think of another movie like this"(LA Times, 1991). Thelma and Louise was a movie written and produced to give women an opportunity to finally tell their story in a society where the media is all too often dominated by males. This was an opportunity to move females from the roles of girlfriend and side interest into the leading role. It is no longer about a man's experiences and a man's adventures.

Acid and Base Report Qualitative Data

Acids and Bases Labs Report Aim: To study the characteristics of acids and bases. Experiment 1 Magnesium Ribbon with Sulphuric Acid Observations | |Material/substance |Rate of reaction |Bubbles |Initial colour |Final colour |Other Observations | |H2SO4 |N/A |N/A |Colourless |N/A |Acid | |Mg |N/A |N/A |Silver Metallic |N/A |Metal | |Mg SO4 |High rate |Yes- High rate |Colourless |Colourless |Heat is produced. | | | | | | | | | | | | | |Acidic smell | |Hydrogen gas was produced. | | |Test: Burning Splint | |Result: Popping sound | |Overall Chemical Reaction | |Word Equation: Magnesium + Sulphuric Acid ( Magnesium Sulphate + Hydrogen | |Chemical Equation: Mg + H2SO4 ( Mg SO4 + H2 | 2. Calcium Carbonate with Hydrochloric Acid Observations | |Material/substance |Rate of reaction |Bubbles |Initial colour |Final colour |Other Observations | |HCL |N/A |N/A |Clear |N/A |Acid | |Lime Water |N/A |N/A |Clear |N/A |N/A | |Ca CO3 |N/A |N/A |White |N/A |Salt | |Ca CO3 + HCL |High rate/ Fast | Y es.High rate/ |Milky, Cloudy |White, Cloudy, |Heat is produced. | | | |Fast | |precipitate formed | | |Observation of Final solution: Final solution was cloudy with precipitation. | |Overall Chemical Equations | |Word: Calcium Carbonate + Hydrochloric Acid ( Calcium Chloride + Carbon Dioxide + Water | |Chemical Equation: Ca2CO3 + 2HCL ( 2CaCl + CO2 + H2O | 3. Almost equal amounts of sodium hydroxide and nitric acid (same concentration) Observations | |Material/substance |Rate of reaction |Bubbles |Initial colour |Final colour |Other Observations | |HNO3 |N/A |N/A | |N/A |N/A | |NaOH |N/A |N/A | |N/A |N/A | |HNO3 + Indicator |N/A |N/A |Strong Pink/ |rose pink/ clear |Test with PH paper; | | | | | |PH 1, maroon | |NaOH + Indicator |N/A |N/A | | |Test with PH paper; | | | | | | |PH 14, Dark purple | |HNO3 + NaOH |High rate/ Fast | N/A | | |Heat is produced. | |Observation of Final solution: Final solution was cloudy with precipitation. | |Overall Chemical Equations | |Word: Calcium Carbonate + Hydrochloric Acid ( Calcium Chloride + Carbon Dioxide + Water | |Chemical Equation: Ca2CO3 + 2HCL ( 2CaCl + CO2 + H2O | 4. Copper (II) Oxide with hydrochloric acid Observations | |Material/substance |Rate of reaction |Bubbles |Initial colour |Final colour |Other Observations | |CuO |N/A |N/A |Black |N/A |Black powder | |HCL |N/A |N/A |colourless |N/A |Acid | |CuO + HCL |Fast |N/A |Black cloud, opaque|Turns aqua green, |Heat is produced. | | | | |clear, translucent | | | | | | | | | | | | | |Black CuO settles at| | | | | | |the bottom of | | | | | | |apparatus. | | |Overall Chemical Reaction | |Word Equation: Copper (II) Oxide + Hydrochloric Acid | |Chemical Equation: CuO + 2HCL ( CuCl2 + H2O | 5. Ammonium chloride solution with sodium hydroxide Observations | |Material/substance |Rate of reaction |Bubbles |Initial colour |Final colour |Other Observations | |NH4Cl |N/A |N/A |Colourless |N/A |Powder | |NaOH |N/A |N/A |Silver Metallic |N/A |Metal | |NH4Cl + NaOH | | | | |Test with PH paper, | | | | | | |purple ( greater than| | | | | | |7, alkaline | | | | | | |(basic) | | | | | | | | | | | | | |Acidic smell, pungent| |Overall Chemical Reaction | |Word Equation: Ammonium Chloride ( Ammonium Hydroxide + Sodium Chloride | |Chemical Equation: NH4Cl + NaOH ( NH4OH + NaCL |

Living in Social Classes in Jane Austins Novels - 816 Words

Jane Austin is a great author from the 1800s. I really enjoyed the few books of hers, that I did get around to reading .I enjoyed the movie adaptions even more, Jane focused on things she thought about and used humor to point out the lives of the middle class, the wealthy, nobility, and families in different financial standings, battling to keep up or with their social status. Jane puts most of her focus and writing into the importance of marriage. She lived with her family her entire life and she did not get married. Jane began writing stories as a kid to entertain her friends. In spite of the fact that she had finished writing Pride and Prejudice in 1798, she published her first book, Sense and Sensibility, in 1811. Mansfield Park and Emma came soon after in a couple of years. Austen published her books anonymously. Northanger Abbey and Persuasion were published in 1818, after she died. Jane was a respected as author. In 1925, Sanditon, a book that Jane was in the middle of writing, before she had died was published. In many authors and readers opinions, she was one the best English authors ever. The main line in Pride and Prejudice is It is a truth universally acknowledged, that a single man in possession of a good fortune must be in want of a wife. This one line says everything; it shows her level of intelligence she used in writing this novel by taking customary subjects, for example, wooing and marriage and cleverly writi ng about them. Pride andShow MoreRelatedEssay on Jane Austin and Pride Prejudice1457 Words   |  6 PagesJane Austin is currently known today as one of the women who first developed the ideas related to feminism (Abrams). Jane’s work became prevalent in English literature during time of transition from neo-classicism to romanticism (Abrams). She was influenced by a number of other literary figures of her time, and by the society in which she lived. Her writing sometimes reflected earlier writers, whom she sometimes mocked because they always portrayed a perfect world in their writing and the world wasRead More Jane Austins Pride and Prejudice Essay1965 Words   |  8 PagesJane Austins Pride and Prejudice Attitudes to love and marriage in the nineteenth century was very different from the comparatively liberal approach of today, and strict codes of etiquette were applied to Courtship for all but the lower classes of society. At the time of Pride and Prejudice, womens role was firmly in the home and the young ladies portrayed in this middle and upper class, occupied themselves with singing, playing the piano, sewing and other such accomplishments thatRead MoreProject Mgmt296381 Words   |  1186 PagesTopics Chapter 1 Modern Project Management Chapter 8 Scheduling resources and cost 1.2 Project defined 1.3 Project management defined 1.4 Projects and programs (.2) 2.1 The project life cycle (.2.3) App. G.1 The project manager App. G.7 Political and social environments F.1 Integration of project management processes [3.1] 6.5.2 Setting a schedule baseline [8.1.4] 6.5.3.1 Setting a resource schedule 6.5.2.4 Resource leveling 7.2 Setting a cost and time baseline schedule (1.3.5) [8.1.3] 6.5.2.3 Critical

In Both Faulkner’S “A Rose For Emily” And Shirley Jackson’S

In both Faulkner’s â€Å"A Rose for Emily† and Shirley Jackson’s â€Å"The Lottery,† we see many examples in which tradition conflicts with modernity. Even in today’s society, there is a lot of change, which results in tradition conflicting with modernity. Traditions are normally something that is passed down from generation to generation, but modernity clashes with tradition because as societies continue to develop, they are more inclined to change. This is when tradition conflicts with modernity; when people are losing their traditions as everything else continues to modernize. In both stories, modernity is affecting their society and yet, part of the society still refuses to let go of their tradition that they have been holding onto for so long.†¦show more content†¦The sidewalks that the community hired Homer to pave are also part of tradition conflicting with modernity. The new sidewalks are the modernity with Miss Emily’s tradi tion house a sharp contrast to it. It once again shows how that while the town is developing to adapt itself to change, Miss Emily refuses to accept this and ignore it instead. Another important part of the story is when Miss Emily kills Homer in order to stop him from leaving her. Miss Emily goes to buy poison in order to kill him and keep Homer close to herself. This also refers to the beginning of the story where her father died. â€Å"Miss Emily met them at the door, dressed as usual and with no trace of grief on her face. She told them that her father was not dead.† In Miss Emily’s reality, she denies that her father is dead because she simply wants to stop time. Miss Emily most likely killed Homer so things would stay the same and not change. In the end, when Miss Emily dies of old age, the tradition that she was holding onto dies alongside with her. Shirley Jackson’s â€Å"The Lottery† also portrays many conflicts between the idea of traditions and modernity. One of the biggest examples in â€Å"The Lottery†Show MoreRelated Tradition in William Faulkners A Rose for Emily and Shirley Jacksons The Lottery656 Words   |  3 PagesTradition in William Faulkners A Rose for Emily and Shirley Jacksons The Lottery People throughout the world do things for many different reasons. Religion, peer pressure, or tradition are some of the reasons the people do things. In the U.S. we have many traditions such as Christmas. Some people have strange or out of the ordinary traditions. The two short stories ?The Lottery? and ?A Rose for Emily? both portray tradition.   Ã‚  Ã‚  Ã‚  Ã‚  In ?The Lottery?, tradition is showed in three main waysRead MoreThe Lottery, By Shirley Jackson And A Rose For Emily By William Faulkner960 Words   |  4 PagesThe Use of Symbolism in â€Å"The Lottery† by Shirley Jackson and â€Å"A Rose for Emily† by William Faulkner The use of symbolism is used in literature to enhance writing and add meaning to a story, this is evident in the two short stories â€Å"The Lottery† written by Shirley Jackson and â€Å"A Rose for Emily† written by William Faulkner. With the authors use of symbolism Jackson and Faulkner are able to add depth to their writing in a way that connects with the readers. By adding symbolism to the short storiesRead MoreWilliam Faulkner s A Rose For Emily And Shirley Jackson s `` The Lottery ``1061 Words   |  5 PagesWilliam Faulkner’s, â€Å"A Rose for Emily† and Shirley Jackson’s, â€Å"The Lottery† short stories have a unique way of sharing similarities but have their differences. Both authors open up their stories as a quite everyday small town with everyday people. Faulkner and Jackson both use an individual type of foreshowing and use a great deal of imagery to pull the reader into their story. There is a history behind each story and e ach with their own family backgrounds. Tradition has a major role in each asRead MoreEssay about A Rose for Emily vs the Lottery940 Words   |  4 Pagesstory, â€Å"The Lottery† and â€Å"A Rose for Emily† are two very grueling short stories with a long suspense and a similar plot. The narrator’s stance in â€Å"A Rose for Emily† was first-person observer, which is defined as a single character point of view in which the narrator was is not involved with the story and the narrator’s stance in â€Å"The Lottery† was third-person anonymous which is involves a narrator that does not enter any minds. Both stances conceal the endings and both the stories use imagery andRead MoreTraditions in The Lottery by Shirley Jackson and A Rose for Emily by William Faulkner1176 Words   |  5 Pages There are many people who still follow these traditions or try to escape to another place so they can be free to do whatever they want. There are a lot of co mparisons between The Lottery by Shirley Jackson to the short story A Rose for Emily by William Faulkner. In the short story â€Å"the Lottery† by Shirley Jackson has a very unique twist and different traditions. This story is about how the whole community is coming together for a gathering every once a year. It is not any happy gathering thatRead MoreANALIZ TEXT INTERPRETATION AND ANALYSIS28843 Words   |  116 Pages 5. Resolution Beginning Middle End In some novels this five-stage structure is repeated in many of the individual chapters, while the novel as a whole builds on a series of increasing conflicts and crises. Such a structure is found both in such classics of fiction as Flaubert’s â€Å"Madame Bovary† and in the adventure thrillers of Alistar MacLean. EXPOSITION: The exposition is the beginning section in which the author provides the necessary background information, sets the scene, establishes