Saturday, November 16, 2019
DC Motor Speed Control
DC Motor Speed Control Abstract The point of this paper is to comprehend the attributes of open loop and close loop speed control for a DC engine. It additionally intends to demonstrate the properties of a PID Controller. Introduction Open loop and close loop control are two unique sorts of controlling the speed of the engine we constructed. These two sorts of control each have positive points and negative points, which we will attempt to research all through this paper. Most importantly, an open loop system works regardless of the output of the function. In restriction, a close loop control system react depending on the input and output values. Utilizing an Arduino microcontroller, we will run tests on this motor by changing some variables. This permits us to concentrate data about the responses of the control system. P, D and I remain for: proportional gain, integral gain and derivative gain. Their particular elements show up in the following section. Theory The transfer function of a first order system is given by the equation: :. Knowing that (k/a) the final value in RPM, and that the time constant isÃâà 1à ¢Ã ââ¬Å¾a. The transfer functions of the system can then be determined. In principle, corresponding, integral and derivative gain cooperate with a specific end goal to keep up the output to a set value. The corresponding gain applies an exertion that is relative to how far the value is from the set esteem. In any case, the nearer the set and value are the less exertion it applies on the system. The basic pick ups part is to try and out the time spent on each side of the set point. Last, the derivative gain controls the overshoot and goes about as a dampener when the value changes violently. Results Open loop test Fig 1: Open loop test 1 Fig 2: Test 2 time series plot Fig 3: Test 3 time series plot Fig 11: Simulink model of open-loop system The realistic information demonstrates a delay of 0.1s and the time taken to achieve 63% of the last esteem is 0.5s for each test. So the time steady is 0.4s for each test. At that point the transfer function of each of these system can be resolved: Ãâà , Ãâà , . When rescaled to RPM units, these transfer functions are all equal to: Toward the finish of this section, one noteworthy weakness of open loop control system shows up. The open loop system doesnt take a gander at the output value, so it cant correct itself. Despite the fact that the system works, it depends for the most part on the clients involvement to conform the PID controls to the correct qualities to acquire the best outcomes. The proportionnal gain role is to direct the final value that the system comes to (the higher the gain, the nearer to the set value the systeme will be). Closed loop system test In the test where kp=1 that appeares on figure 4, the set point was 1000 RPM. Not surprisingly for this low estimation of the proportionnal gain, the last value is just around 4000 RPM. So we will increse the Kp to see what it does to the system. At the point when the estimation of kp expands, the exactness of the system get higher. On figure 4 the red bend demonstrates the outcomes for kp=2, the last RPM esteem has expanded to 6000 with an overshoot to 8000. Figure 4 obviously demonstrates that the greater kp is, the nearer the last esteem is from the coveted set point. Expanding the estimation of the proportionnal gain enhances the precision of the close loop system. The system begins to sway unmistakably for a proportionnal pick up estimation of 15, with a time of around 0.5 seconds (reference: figure 4, kp=15). On figure 5, the system seems to stabilize at 1 second and then reaches the set point value of 10000 RPM a around 8 seconds. Lets try to understand what is the relationship between the Kp and the Ki. On figure 6, the system goes into overshoot before backpedaling to the fancied estimation of 10000 RPM. The framework takes roughly 2 seconds to settle to its last value. Figure 7 demonstrates se reaction of thew motor with kp set to 1 and ki set to 10. It is recognizable that for a higher ki value, the reaction (in RPM) is swaying around the chosen value (10000 RPM for this situation), expanding its exactness with each period. On the off chance that ki is expanded to a higher value, the oscillation dont enhance in exactness as observed on figure 8. After around 5 seconds, the Dc motor has balanced out; At this point, the card touches the flywheel (see figure 10). The reaction is prompt, and the system tries to remunerate the loss of RPM has returned to the sought estimation of 10000, which it settles again around 7 seconds after the card touched the framework. This test demonstrates the fundamental favorable position of a close loop system, which is that if the output is changed, the input changes likewise to go back to the initial value. these tests comprehended the parts of every PID control. By tweaking the numbers, it is conceivable to streamline the framework so that the reaction has a negligible overshoot and in addition the speediest settling time conceivable. By abusing the outcomes, unmistakably a shut circle control framework is the best for this circumstance. Figure 12 demonstrates the best outcome acquired in the lab for set estimations of the PID controller As it shows on figure 12, expanding the estimation of the derivative gain keeps the system from overshooting. With this estimation of the proportional gain, the DC motor can settle rapidly (in around 1.5 seconds) around the estimation of 10000 RPM. To further build the exactness of the motor, the integral gain was set to 1.4. This empowers the system to make little oscillation around 10000 RPM without losing any exactness. Planning a PI controller in like manner to this table brought about a system that has great attributes: little overshoot, quickly revised, quick settling time and just a small error on the last estimation of the system.This table is exceptionally helpful with regards to designing the motor. Be that as it may, outlining a PID controller with this table is trickier as the derivative gain affects the way the system carries on. It can dampen the motor excessively, or take a little unsettling influence for a major issue and the system wont be as productive. The key is not to utilize a lot of the derivative. Conclusion In conclusion, the less complex outline of the open loop system makes it simple and modest to make, all things considered. Notwithstanding, the way that open loop system dont adjust to unsettling influences in the output is a noteworthy disadvantage. The adequacy of these system depends on the qualities picked by the user for for proportional, integral and derivative gains. close loop system are vastly improved at keeping up a desired target, for this situation the speed of the engine. By tweaking the estimations of every parameter of a PID controller, it is for all intents to make the system do precisely what it is intended to.However, the three type og gain must be set for each exact system, which makes outlining the close loop system more complex to do. References Document on moodle Open loop systems http://www.electronics-tutorials.ws/systems/open-loop-system.html Understanding D in PID control http://www.controleng.com/search/search-single-display/understanding-derivative-in-pid-control/4ea87c406e.html electrical4u, 2013. Speed Control of DC Motor. [ONLINE] Available at: http://www.electrical4u.com/speed-control-of-dc-motor/. [Accessed 9 February 2017]. Bishop, R.H. and Richard C. (Richard Carl) Dorf (1998) Modern control systems. Available at: https://capitadiscovery.co.uk/greenwich-ac/items/337549?query=Modern+control+systemsresultsUri=items%3Fquery%3DModern%2Bcontrol%2Bsystems (Accessed: 17 February 2017).
Wednesday, November 13, 2019
Democracy Essay -- miscellaneous
Democracy This essay will now discuss the different forms of government, which are monarchy and aristocracy. In this essay I will also answer the question ââ¬Å"Is Democracy the Best Form of Government?â⬠My basic answer to that question is yes, I do think it is the best form of governments. I will be giving reason to back up my answer to this question. This essay will now discuss the different forms of government and the answer to the question ââ¬Å"is Democracy the Best Form of Government?â⬠in more depth and detail. One of the forms of government that we would be discussing is monarchy. A monarchy is a form of government that has a monarch as Head of State, political power which belongs largely to one ruler, generally called a king or queen, who receives his or her position by claim of divine or inherited right. This basically means that there is one ruler for the common good. An example of this is Saudi Arabia, Jordan and Monaco. However, the prevision of a monarchy is a tyranny. This happens when the one man who is a dictator governs for his or her self and not for the interest of the common good. An example of tyranny is Greece where Hippias (last tyrant of Athens) ruled. Another form of government is aristocracy. An aristocracy is a form of government in which rulership is in the hands of an "upper class" known as aristocrats. The aristocrats are a few of people which are the most elite of men that are chosen to run the country. The word aristocracy implies the meaning of...
Monday, November 11, 2019
Drones Essay
At one point in everyoneââ¬â¢s life they have felt that they were being watched. Now that feeling may not be just a feeling anymore. The government uses aircraft drones to video and take pictures of other countries to spy on them. Although, the government has started using these drones and other spying devices to watch the United States as well. One day, you may observe a miniature helicopter with cameras or a small plane looking upon the houses of this countryââ¬â¢s citizens houses. There is a very good use for these drones as well, ââ¬Å"Police departments in Texas, Florida and Minnesota have already expressed interest in the technologyââ¬â¢s potential to detect fugitives on rooftops or to track them at night by using the robotic aircraftââ¬â¢s heat-seeking camerasâ⬠(Reporter). The police have already started using helicopter drones to help search for suspects and criminals. The use of drones in residential areas needs to be limited to the use of police to find c riminals that have been sited or thought to have been in that area. The fact that using these drones is helping the police find criminals is good, but spying on the innocent people of the suburbs is an invasion of privacy and unneeded. During the event that the government starts spying on residence for no reason is when these drones become misused. ââ¬Å"FBI director Robert Mueller told congress the agency owns several drones but has not yet formed policies or guidelines on their use. Confirmation that the U.S. is using the surveillance equipment to monitor its own citizens comes after the NSA phone tracking scandal rocked trust in the governmentâ⬠(Jerreat). The head of the FBI has admitted using drones to spy on U.S. citizens very solemnly but after the NSA tracking citizens cell phones without any kind of permission makes it very hard for people to trust anything that the government says. Drones being used violates the fourth amendment because of search and seizure. There is also a chance that these drones could be hacked and taken over. The United States could become a Communist Country if the government continues ââ¬Å"watchingâ⬠the people of this country with these drones. The government should not be able to spy on United States citizens because these actions violate the peopleââ¬â¢s rights as individuals. The Fourth Amendment is being violated if drones start flying around watching those who havenââ¬â¢t done anything. Core values such as privacy and protection from the government are always within its sweep. A continuing question, though, is how the demands of its protection apply to an ever-changingà society in which new and pervasive forms of technology are increasingly common.â⬠President Obama signed an FAA bill into law that provides for the integration of ââ¬Å"drones,â⬠or more properly into the nationââ¬â¢s airspace. This has generated legitimate concerns that UAVs could be used by the government in ways that infringe privacy rightsâ⬠(Villasenor) Although there are many rules and exceptions throughout the Supreme Courtââ¬â¢s Fourth Amendment. In short, the Fourth Amendment regulates when, where, and how the government can conduct searches and seizures. The Supreme Court held that police wiretaps of the defendantââ¬â¢s home telephone did not constitute a Fourth Amendment search because the police did not trespass onto a persons property to intercept his or her conversation. One of the modern Fourth Amendment tests relied upon by courts in assessing whether government monitoring constitutes a search. The Courtââ¬â¢s thinking at the time was that if the personââ¬â¢s home, property, or papers were not physically invaded, then no search in the constitutional sense occurred. It considers whether the person has a subjective expectation of privacy in the area to be searched and whether s ociety is prepared to deem that expectation reasonable. The technology used by UAVs may be a decisive factor considered by courts in determining whether individuals have an expectation of privacy in the object or area of the drone search. The question, is whether drones have the potential to be significantly more invasive than traditional surveillance technologies such as manned aircraft or low-powered cameras technologies in which have been upheld in previous cases. Some have asked whether using sophisticated digitized platforms on a drone is any different from attaching the same instrument to a lamppost or another traditional aircraft. Technological developments make it increasingly easy to share and acquire personal information about others, oftentimes without their direct knowledge or consent. ââ¬Å"As the American Civil Liberties Union explained in its December 2011 report, the machines potentially could be used to spy on American citizens. The dronesââ¬â¢ presence in our skies threatens to eradicate existing practical limits on aerial monitoring and allow for pervasive surveillance, police fishing expeditions, and abusive use of these tools in a way that could eventually eliminate the privacy Americans have traditionally enjoyed in their movements and activitiesâ⬠(Franceschi-Bicchierai). Currently, many states and municipalities employ automatic license plate readers, which areà usually mounted on police vehicles or stationary objects along the streets, to take a snapshot of a license plate as a car drives by, and store this information in a large database for possible later use by law enforcement. It is alleged that these devices can be used to track a personââ¬â¢s movements when police aggregate the data from a multitude of ALPR stations. A majority of the reviewing federal circuit courts have held that a person has no reasonable expectation of privacy in his license plate number. However, it appears th at no federal court has addressed the constitutionality of the use of ALPRs, as opposed to plate numbers collected by a human observer. Nonetheless, the question remains whether attaching an ALP, or any similar sophisticated technology to a drone would alter the constitutionality of its use by law enforcement. Some say yes, arguing that the sophistication of drone technology in and of itself is a unique threat to privacy. Drones are smaller, can fly longer, and can be built more cheaply than traditional aircraft. some drones could theoretically stay in the air forever. Unlike a stationary license plate tracker or video camera, drones can lock on a targetââ¬â¢s every move for days, and possibly weeks and months. This ability to closely monitor an individualââ¬â¢s movements with pinpoint accuracy may raise more significant constitutional concerns than some other types of surveillance technology. With this increasing presence and usage of drones, a major concern is developing. Many people consider this advancement in technology as quite controversial. Many people believe that with drone technology in the governmen tââ¬â¢s hand, we will begin to lose our privacy. ââ¬Å"A report on the militaryââ¬â¢s growing arsenal of unmanned aerial vehicles indicates that approximately 31% of all US military aircraft are now dronesâ⬠(Boyle). if all of these drones that the military is using were hacked then who knows what might happen. With no restrictions on drones, governments have the power to monitor its citizens invading their privacy. Without any restrictions on drone technology, it can be expected that you will no longer have any privacy. Along with these privacy concerns, there are also great areas of concern in the subject of security and drones. Drones run the risk of becoming hacked therefore making them possible security risks. In a recent talk on National Public Radio, the topic of hacking of drones was brought up. The method called ââ¬Å"spoofingâ⬠has been used to take control of helicopter drones flying over ones head.. Spoofingà is basically matching the signal of the actual controller and then increasing the strength of your signal allowing you to gain control. ââ¬Å"Serial hacker Samy Kamkar turned up in an Arstechnica article yesterday with a pretty interesting hack. Heââ¬â¢s put together a system of hardware and software that can be put together to build a drone. From there, that drone finds other drones out and about in operation, hacks the drone and then controls them. It is one of the most innovative drone hacks to ever come out, and it may have many people concerned about the potential malice that could be played out with such a capabilityâ⬠(Casaretto). The fact that it is easy for hackers to take control of these drones and use them for themselves and even take footage from them can be a very dangerous situation. this hacker could find out where you live, who your friends are, and who your family is. The increasing presence of drone technology in todayââ¬â¢s society is quite evident. We hear on the news quite frequently of a drone bombing or spying on someone in the war. Not only do we hear about what drones do, we experience the benefits that they provide for us. When we listen to the weather there is a possibly the information is received from an actual drone. Despite the many different types of benefits drones present, drones still present a very serious security and privacy risk. Drone use violates the fourth amendment if used to spy on civilians without actual reason. If the person has an expectation of privacy then that person should have their privacy. The United States people will lose all of their privacy in a matter of years if we allow drone research to continue. One must decide whether the privacy and security risks outweigh the benefits. Works Cited Casaretto, John. ââ¬Å"Drones That Hack Drones.â⬠SiliconANGLE. N.p., n.d. Web. 13 Dec. 2013. Jerreat, Jessica. ââ¬Å"FBI Director Admits Using Domestic Drones to Spy on US Citizens and Says Agency Has No Guidelines for Their Use.â⬠Mail Online. N.p., n.d. Web. 13 Dec. 2013. Reporter, Daily Mail. ââ¬Å"U.S. Government to Use ââ¬Ëdrones the Size of GOLF BALLS to Spy on AMERICAN Citizens'â⬠Mail Online. N.p., n.d. Web. 13 Dec. 2013 Sifton, John. ââ¬Å"A Brief History of Drones | The Nation.â⬠A Brief History of Drones. N.p., n.d. Web. 10 Dec. 2013. Villasenor, John. ââ¬Å"Will ââ¬Å"Dronesâ⬠Outflank the Fourth Amendment?â⬠Web log post. Forbes. Forbes Magazine, 20 Sept. 2012. Web. 13 Dec. 20 Boyle, Ashley. ââ¬Å"Drone Information Sources : Annotated Bibliography.â⬠ASP RSS. N.p., n.d. Web. 13 Dec. 2013.
Saturday, November 9, 2019
Themes in 1984 essays
Themes in 1984 essays 1984 is rather interesting as it contains many themes, mostly about society and control. It also warns us about the dangers of a totalitarian rule and what our world would become if a single authority ruled our entire lives. In this essay, I will express my opinions about and reactions to these themes. In the world of 1984, the world is divided into three superpowers: Oceania, Eurasia and East Asia. In the novel, Oceania is permanently at war with either East Asia or Eurasia, with constant air raids and bombings. It is not a pleasant view of the world and a picture that everyone feared greatly during the Cold War. Obviously, one of the major themes in 1984 is totalitarianism. In 1984, Oceania is controlled by the Party, which is symbolised by Big Brother. It is the perfect totalitarian society, a modern day example of a government with complete control on society. In the novel, Party holds complete control on the people of Oceania. Every single action is scrutinized and searched for a possibility of an act of disloyalty to the Party. The Party uses several ways to control the people, namely, psychological control, physical control and control of the media, language and technology, as described below: Psychological control is achieved by the means of enormous amounts of propaganda, spread through the telescreens in every home. Every single action by the Party, victory or failure is disguised as a success and blasted into the citizens minds, overwhelming the minds capacity for independent thought and creativity. The posters of Big Brother are another form of propaganda. The words Big Brother give a sense of someone who can be trusted and is close to you, yet Big Brother is watching you sounds like Big Brother is observing your every move and gives a warning not to break the law or cause trouble. Other ways of psychological control are the Junior Spies, where children ...
Wednesday, November 6, 2019
Spelling Review Exercises for Commonly Misspelled Words
Spelling Review Exercises for Commonly Misspelled Words Studyà spelling rules and commonly misspelled words, then test your spelling skills by completing the following short exercises. In some cases, you will need to add a letter or two to complete the correct spelling of each word in parentheses. In other cases, the word in parentheses is correct as it stands. When youre done, compare your responses with the answers below. Group A: To E or Not to E? Some of the words in parentheses require the addition of the letter e; others are correct as they stand. Gus is (tru-ly) sorry for keeping you awake last night.We were criticized (sever-ly) by the sewing circle.The shed was (complet-ly) demolished.Merdine was (sincer-ly) grateful for the reprieve.The Simpsons are (argu-ing) again.They (argu-d) last night for hours.When is Mr. Wolfe (com-ing) home.Maya is (writ-ing) her autobiography.Mr. White is (judg-ing) the essay contest.Be (car-ful) when you light the furnace. Group B: IE or EI? Some of the words require the addition of ie; others require ei. Paint the (cling) before you paint the walls.Gus has been (recving) threatening e-mails.A (wrd) noise came out of the attic.I paid almost five dollars for that (pce) of pie.I dont (belve) in coincidence.The guests brought (thr) children to the wedding.(Nther) of us can help you today.The (nghbors) complained about our parents.Linda (wghs) less than her collie.We waited for the (frght) train to pass. Group C: I or Y? Some of the words require the addition of i; others require y. Have you (tr-ed) the dessert yet?The baby (cr-ed) throughout the church service.We compared two (theor-es) of evolution.Peggy felt (betra-ed) by her manager.You should be (stud-ing) for Fridays exam.(Lonel-ness) was never a problem for Henry.She (fl-es) on broken wings.I have always (rel-ed) on my friends.Please give Mr. Flannery my (apolog-es).It was a (pit-ful) sight. Group D: A, E, or I? Complete each word with the letter a, e, or i. I borrowed these flowers from the (cemet-ry).My parakeet eats huge (quant-ties) of bird seed.The tax cuts will (ben-fit) the wealthy.It was a (priv-lege) to meet you.He has a remarkably (unpleas-nt) disposition.We placed the puppies in (sep-rate) rooms.Henry is an (independ-nt) thinker.I found an (excell-nt) excuse to resign from the committee.She chose items from different (cat-gories).Professor Legree made another (irrelev-nt) remark. Group E: Single or Double? Some of these words require the doubling of a consonant; others are correct as they stand. The sun was (shin-ing) down like honey.The experiment was (control-ed) by a madman.The region is slowly (begin-ing) to recover.Doug (pour-ed) sugar over Yoddys oatmeal.She keeps (forget-ing) to call me.Gus (admit-ed) his mistake.They were (sweat-ing) in the classroom.That idea never (occur-ed) to me.The bunny went (hop-ing) down to the abattoir.His doctor (refer-ed) him to a dimple specialist. Group F: Letters Needed? Some of these words require the addition of one or more letters; others are correct as they stand. Marriage comes without a (g-arantee).Caley (su-prised) me.You are (prob-ly) going to be late.Does she (reali-e) that her socks dont match?(D-scribe) the man who hit you.We waited (until-) the mortician arrived.Merdine (recom-ended) a psychiatrist.Take two (asp-rin) and go to bed.She supports a strong (ath-letic) program.The (tem-rature) reached 109 degrees in Yuma. Group G: More Letters Needed? Some of these words require the addition of one or more letters; others are correct as they stand. She (a-quired) a good tan and a new boyfriend.Gus is (basic-ly) lazy.We must work together to improve the (envir-ment).I wish Hansel would just (dis-pear).Mr. Summers should attend to his (bus-ness).Alice Walker wrote an essay (sim-lar) to yours.The Red Sox have (fin-ly) won a ball game.I was (dis-appointed) by the cranberries in dill sauce.Doc Brown was working in his (lab-ratory).Baron Leibniz works for the (gover-ment). When youre done, compare your responses with the answers below. Answers Here are the answers to the Spelling Review Exercises, Groups A through G. ANSWERS- GROUP A1. truly; 2. severely; 3. completely; 4. sincerely; 5. arguing; 6. argued; 7. coming; 8. writing; 9. judging; 10. careful. ANSWERS- GROUP B1. ceiling; 2. receiving; 3. weird; 4. piece; 5. believe; 6. their; 7. Neither; 8. neighbors; 9. weighs; 10. freight ANSWERS- GROUP C1. tried; 2. cried; 3. theories; 4. betrayed; 5. studying; 6. Loneliness; 7. flies; 8.à relied; 9. apologies; 10. pitiful ANSWERS- GROUP D1. cemetery; 2. quantities; 3. benefit; 4. privilege; 5. unpleasant; 6. separate; 7. independent; 8. excellent; 9. categories; 10. irrelevant ANSWERS- GROUP E1. shining; 2. controlled; 3. beginning; 4. poured; 5. forgetting; 6. admitted; 7. sweating; 8. occurred; 9. hopping; 10. referred ANSWERS- GROUP F1. guarantee; 2. surprised; 3. probably; 4. realize; 5. Describe; 6. until; 7. recommended; 8. aspirin; 9. athletic; 10. temperature ANSWERS- GROUP G1. acquired; 2. basically; 3. environment; 4. disappear; 5. business; 6. similar; 7. finally; 8. disappointed; 9. laboratory; 10. government
Monday, November 4, 2019
History and Political Science Essay Example | Topics and Well Written Essays - 2250 words
History and Political Science - Essay Example There were many factors at the end of the 19th century that saw a shift towards American Imperialism. Kennedy Cohen-Bailey in his book, The American Pageant outlines the period and covers the various aspects that led to the Great War of 1914 and Americaââ¬â¢s involvement. This article reviews the book under the following subheadings: The Spanish American war and the aftermath. The legacy of President Roosevelt and the effect of his presidency on America A comparison of the presidency of Theodore Roosevelt. Taft and Wilson and who was the best among the three? The end of World War I and the decisive factors that lead to the end The Spanish American war and the Aftermath The US had for the most part of the 19th century strictly adhered to its non-colonization policies and even at the onset only acquired contiguous territories. Most of it was brought about by the need to expand the trade borders of the American people. America was linked in many ways to Cuba than just at the time of the war. Cuba was one of the major producers of sugar and major suppliers to the USA. The Wilson-Gorman tariff imposed on Cuba by America to protect the sugar growers in America invariably raised the price of sugar and the Cuban economy suffered as a result. The misrule by the Spanish of its colony in Cuba created a lot of unrest. The Cubans fought the 10year battle of independence from 1868 to 1878 and tried to drive the Spanish away by destruction of property including cane fields and blowing up of passenger trains. The situation peaked when Spain sent tyrant General Wyeley in 1895 to Cuba. Wyeley took it upon himself to crush the rebellion and opened up re-concentration camps, imprisoned and isolated the Cuban revolutionaries from the Filipino revolutionaries in their war of independence. Many perished and ââ¬Å"died like dogsâ⬠(Bailey, 629). from unsanitary conditions in the camps. The American people rose against this atrocities to the Cubans and wanted war but the then president Grover Cleveland was against it and even motioned to strike against congress if they were to declare war against Spain and send troops to Cuba. This resolve however did not last very long as there were many other factors at stake than America was unwilling to admit to at that time. US also had a stake in the war because it was not really comfortable with having a European colony that close to its own borders. The unrest in Cuba was straining US trade relations in the region and threatening US investments in Cuba. There was also fear that its access to Panama would affect future sea trade routes. The anti-colonisation policies of the US went a long way in selling the concept of a free Cuba to the Americans. What cinched the deal however was the journalistic trend of the time, which focused more on justifying the concept of war. There started a spate of graphic imagery and reports of atrocities adding fuel to the situation and feeding the insatiable hunger of yellow journali sm. Eventually Wyeley was removed from his position and sent back home. In February 1988, the USS Maine, which was on a friendly mission to take Americans in Cuba to safety, blew up in the Havana harbour with the loss of 260 American lives. The cause for the explosion still remains unknown. Reports have even said that the blow up was due to mechanical failure and not a case of sabotage. But sensationalised news articles blamed the Spaniards for it and the fate of history was sealed, War had begun. President Mc Kinley forced by circumstances and party loyalty consented and under Theodore Rooseveltââ¬â¢s command of the military, the Americanââ¬â¢s over threw the Spanish from Tampa, Florida and gave armistice to the Cubans in August 12, 1898. The war was a forgone conclusion although not evident. Spainââ¬â¢
Saturday, November 2, 2019
BP Essay Example | Topics and Well Written Essays - 500 words - 1
BP - Essay Example BP publishes a sustainability review report on a regular basis in which it focuses on building a safer as well as a stronger workplace. It does not have any designated Corporate Social Responsibility Officer (CSR) to oversee their CSR activities. The Chairman has the discretionary authority to look after their valuable social activities. In order to address ecological and social concerns, after the 2010 Gulf of Mexico oil spill case incident, BP has decided to pay around US$500 million within a period of 10 years towards supporting research activities for betterment of ecosystem in the Gulf region. In order to contribute to people, planet along with focusing on its long-term profitability, BP has decided to focus on ISO 14001:2004 standards for environmental management, which in turn can provide benefit to the people all over the world and can ensure its sustainability (BP plc, ââ¬Å"Sustainability Reviewâ⬠). The company has recorded a huge number of environmental disasters wit h over 8,000 spills of oil, dangerous chemicals as well as gases. The states of Texas and Louisiana have been the worst hit with close to 3,000 cases being reported in those states. There occurred about 550 previous incidents in the Mississippi Canyon near the area where the current Deepwater Horizon disaster is unfolding. In the recent past, two major incidences have been reported in the city of Texas in which an explosion was registered in the major refinery of the company in the year 2005 and oil spill at the Prudhoe Bay. The Texas explosion led to the death of 15 people while at the same time 170 people were severely injured. The root cause of the explosion was found to have been caused by temporary trailers that had been placed close to the volatile units which the companyââ¬â¢s top management admitted to have been a measure taken to cut costs. It was further established that poor maintenance of the
Subscribe to:
Posts (Atom)